Heat Pump Thermostat

Cross Reference

&Selection Guide

Select a Honeywell Heat Pump Thermostat for Peak Performance that Meets Every Heat Pump Demand Rapid advances in heat pump technology, resulting in high efficiency units and lower operating costs, have made the heat pump a popular choice with consumers. Honeywell heat pump thermostats are ideal for all your heat pump applications and provide the highest level of comfort available. Our thermostats offer consistent control. They optimize desired comfort level and energy savings. Because your customers’ needs vary, we’ve developed the most complete line of heat pump thermostats.

NON-PROGRAMMABLE HEAT PUMP THERMOSTATS T841 Standard Non-Programmable Thermostat • Good performance without any “frills”. • Electromechanical. • Two heat/one cool; manual changeover. • Single-piece construction–no subbase required. • Front test probe access for easy checkout.

Y594 Deluxe Non-Programmable Thermostat • Proven reliability with excellent temperature control. • Electromechanical. • Classic styling. • Two heat/one cool; automatic or manual changeover. • Two-piece, front-wired construction for easy installation.

T8411 Standard Electronic Non-Programmable Thermostat • Microelectronic technology provides precise zero-droop performance. • Attractive styling complements any décor. • Two heat/one cool; manual changeover eliminates unexpected system operation. • Large digital display for quick, easy readability. • Fan and system switches are located on the lower edge of the thermostat to eliminate accidental setting changes.

T8511 Deluxe Electronic Non-Programmable Thermostat • Microelectronic technology provides precise zero-droop performance. • Attractive styling complements any décor. • Two heat/one cool; automatic or manual changeover. • Easy-to-read backlit display. • Most frequently used keys are located by LCD for quick and easy access to information. • Outdoor temperature display available with optional outdoor temperature sensor.

PROGRAMMABLE HEAT PUMP THERMOSTATS T8011 Standard Programmable Thermostat • Microelectronic technology provides precise zero-droop performance. • Attractive styling complements any décor. • Two heat/one cool; manual changeover. • Program up to four time periods and temperature setpoints. • Large temperature display for quick, easy readability. • Conveniently sized thermostat with two-piece installation make it easy to install and troubleshoot.

T8611 Chronotherm® IV Deluxe Programmable Thermostat • Microelectronic technology provides precise zero-droop performance. • Attractive styling complements any décor. • Two heat/one cool; automatic or manual changeover. • Seven-day programming. • COPY key makes programming easier for the installer and the homeowner. • Easy-to-read backlit display. • Adaptive Intelligent Recovery™ optimizes heat pump energy savings. • Outdoor temperature display available with optional outdoor temperature sensor.

PC8900/W8900B1002 Perfect Climate Comfort Center™ Control System • Automated, all-in-one comfort control. • PC8900 Control Panel mounts in living space and accurately measures and controls room temperature and humidity. W8900 Remote Panel mounts near the heating and cooling equipment. • Optional remote sensors can be used for optimum temperature control. • Up to three heat/two cool. • Seven-day (auto copy) programming. • Large, continuously lit display. • Simultaneous display of heat and cool setpoints with push of a button. • Circulation fan setting improves indoor air quality.

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Table of Contents About This Cross Reference/Selection Guide ........................................................................................................................

1

Heat Pump Thermostat Model Specifications .........................................................................................................................

2-4

Thermostat Descriptions and General Information .................................................................................................................

5-12

Understanding Circuits ............................................................................................................................................................

13-14

Typical System Hookup Diagrams ..........................................................................................................................................

15-25

Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences of Operation ...................................................................

26-28

Thermostat Manufacturer Cross Reference ............................................................................................................................

29-32

Tips for Using This Heat Pump Cross Reference ...................................................................................................................

33

Wiring Connections for Honeywell Heat Pump Thermostats ..................................................................................................

34-35

Manufacturer Cross Reference ...............................................................................................................................................

36-116

Index .......................................................................................................................................................................................

117-118

Index to Figure Diagrams ........................................................................................................................................................

119

About This Cross Reference/Selection Guide Heat pumps require thermostats with special features. This Cross Reference/Selection Guide contains information about all aspects of selecting a Honeywell replacement thermostat for any heat pump application. Table 1 shows a list of the Honeywell TRADELINE® and SUPER TRADELINE® OS numbers and their specifications. Immediately following the table are more detailed descriptions and related application information. In this section you will find additional information explaining features and requirements that are unique to heat pump thermostat applications. Following the general information section are the internal schematics, wiring diagrams, and sequence of operation information for the electronic thermostats. The Thermostat Manufacturer Cross Reference is listed next. Finally, there is the heat pump manufacturer cross reference, including tips on how to use it. This cross reference, which is organized alphabetically by equipment or thermostat manufacturer, provides the needed information to select and wire any Honeywell heat pump thermostat in new installations and replacement applications.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Heat Pump Thermostat Model Specifications Table 1. Model Number Specifications.

Order Number

Stages

Systems Switch

Changeover

Led Indication

Description

Terminals

Heat

Cool

T841A1308

TRADELINE®; fixed anticipation. For use where E and W2 may be jumpered. No auto fan in EM.HT. (Fig. 16).

W2,Y,G,R, O,B,L,E,X

2

1

EM.HT.Manual heat HEAT-OFFor cool COOL

EM.HT.d, AUX.HT.

T841A1555

Replaces T841A1068 and T841A1407, T841A1530, GE AY28Y078 and AY28Y139. Includes outdoor reset and fixed anticipation on stage 2 heat. Auto fan in EM. HT. (Fig. 17).

W,Y,G,R,O, B,X2,T,F,U

2

1

EM.HT.HEAT-OFFCOOL

Manual cool

EM.HT., AUX. HT.

T841A1712

SUPER TRADELINE®; for two-stage W2,W3,Y,G, heating and one-stage cooling. Fixed B,O,R,X,E anticipation except Stage 2, which is adjustable. Auto fan in EM. HT. (Fig. 18).

2

1

EM.HT.Manual heat HEAT-OFFor cool COOL

EM.HT., AUX. HT.

T841A1738

Same as T841A1712, except Premier White™. SUPER TRADELINE®; for two-stage heating and one-stage cooling. Fixed anticipation except Stage 2, which is adjustable. Auto fan in EM. HT. (Fig. 18).

W2,W3,Y,G, B,O,R,X,E

2

1

EM.HT.Manual heat HEAT-OFFor cool COOL

EM.HT., AUX. HT.

T841B1000

For “No Emergency Heat” applications. Fixed anticipation except stage 2, which is adjustable. (Fig. 19).

W1,W2,Y1, G,R,O,B,X

2

1

HEAT-OFF- Manual heat COOL or cool

None

Y594G1161

Includes T874G1204/Q674J1043. With outdoor reset; replaces GE AY28X077 and AY28X138; no stage 2 heat anticipation. No auto fan in EM. HT. (Fig. 20).

W,Y,G,R,O, X2,T,F,B

2

1

EM.HT.AUTO-OFF

Auto cool

AUX.HT., EM.HT.

Y594G1419

SUPER TRADELINE®; includes T874G1642/Q674F1444. Auto fan in EM. HT. (Fig. 22).

W1,W2,W3, Y1,G,R,O,B, E,X,X1,X2

2

1

OFFEM.HT. HEATAUTOCOOL

Auto heat or cool

EM.HT., AUX.HT. CHECKc

Y594G1476

Same as Y594G1419, except Premier White™; SUPER TRADELINE®. Includes T874G1741/Q674F1477. Auto fan in EM. HT. (Fig. 22).

W1,W2,W3, Y1,G,R,O,B, E,X,X1,X2

2

1

OFFEM.HT. HEATAUTOCOOL

Auto heat or cool

EM.HT., AUX.HT. CHECKc

Y594G1633

TRADELINE®; includes T874G1972/ Q674F1584. No auto fan in EM.HT. Replaces Coleman/Evcon Y594G1377 (Fig. 21).

W2,Y,G,R, O,B,E,X,L

2

1

OFFEM.HT. HEATAUTOCOOL

Auto heat or cool

EM.HT., AUX.HT.

Y594R1425

SUPER TRADELINE®; includes T874R1616/Q674L1587. Fixed anticipation. Auto fan in EM. HT. (Fig. 25).

W1,W2,W3, G,Y,R,O,B, E,X,X2,L

2

1

EM. HT.Manual heat HEAT-OFFor cool COOL

AUX. HT., EM. HT., CHECKc (continued)

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Table 1. Model Number Specifications (continued). Order Number

Stages Description

Terminals

Heat

Cool

Systems Switch

Changeover

Led Indication

Y594R1763

TRADELINE®; includes T874R1954/Q674L1827. Replaces Y594R1136. Auto fan in EM.HT. (Fig. 23).

W,Y,G,R,O, B,X2,T,F,U

2

1

EM.HT.HEAT-OFFCOOL AUX.HT.

Manual cool

EM.HT., AUX.HT.

Y594R1797

Includes T874R1988/Q674L1868. Replaces Coleman/Evcon Y594R1235. No auto fan in EM.HT. (Fig. 24).

W2,Y,G,R, O,B,X,E,L

2

1

EM.HT.HEAT-OFFCOOL

Manual cool

EM.HT., AUX.HT.

T8611G1004

TRADELINE®; 5-1-1 programming. Auto fan in EM.HT. (Fig. 26).

W2,Y,G,R, C,O,B,E,X1, X2,L

2

1

EM.HT.HEAT-OFFAUTOCOOL

Automatica

EM.HT., AUX. HT., CHECKc SYSTEMb

T8611G1103

Same as T8611G1004, except Premier White™; TRADELINE®. 5-1-1 programming. Auto fan in EM.HT. (Fig. 26).

W2,Y,G,R, C,O,B,E,X1, X2,L

2

1

EM.HT.HEAT-OFFAUTOCOOL

Automatica

EM.HT., AUX.HT., CHECKc SYSTEMb

T8611M7008

TRADELINE®; 7 day programming. Auto fan in EM.HT. (Fig. 27).

W2,W3,Y,Y2, G,R,C,O,B, E,X1,X2,L

3

2

EM.HT.HEAT-OFFAUTOCOOL

Automatica

EM.HT., AUX.HT., CHECKc SYSTEMb

T8611R1000

TRADELINE®; 5-1-1 programming. Auto fan in EM.HT. (Fig. 28).

W1,W2,Y1, G,R,C,O,B, E,L,P

2

1

EM.HT.HEAT-OFFCOOL

Manual

EM.HT.d, AUX.HT. SYSTEMb

T8411R1002

TRADELINE®; non-programmable electronic thermostat. Auto fan in EM.HT. (Fig. 29).

W1,W2,Y, G,R,C,L, E,O,B

2

1

EM.-HT.HEAT-OFFCOOL

Manual

None

T8411R1028

Same as T8411R1002 except Premier White™. Auto fan in EM.HT. (Fig. 29).

W1,W2,Y, G,R,C,L, E,O,B

2

1

EM.-HT.HEAT-OFFCOOL

Manual

None

T8511G1021

TRADELINE®; Deluxe Electronic Thermostat. Outdoor sensor capability. Auto fan in EM.HT. (Fig. 30).

R,C,Y1,W1, W2,O/B,G, E,L,OT,OT

2

1

EM.-HT.HEAT-OFFAUTOCOOL

Automatica

CHECKc

T8511G1047

Same as T8511G1021 except Premier White™. Outdoor sensor capability. Auto fan in EM.HT. (Fig. 30).

R,C,Y1,W1, W2,O/B,G, E,L,OT,OT

2

1

EM.-HT.HEAT-OFFAUTOCOOL

Automatica

CHECKc

T8511M1002

TRADELINE®; Deluxe Electronic Thermostat. Outdoor sensor capability. Auto fan in EM.HT.

R,C,Y1,Y2, W2,W3,O/B, G,E,L,OT,OT

3

2

EM.-HT.HEAT-OFFAUTOCOOL

Automatica

CHECKc

T8011R1006

Same as T8011R1014 except Premier White™. Fixed anticipation except stage 2, which is selectable. (Fig. 29).

R,C,G,W1, W2,Y,O, B,E,L

2

1

EM.-HT.HEAT-OFFCOOL

Manual

None

T8011R1014

TRADELINE®; program up to four time periods and temperatures. Fixed anticipation except stage 2, which is selectable. (Fig. 29).

R,C,G,W1, W2,Y,O, B,E,L

2

1

EM.-HT.HEAT-OFFCOOL

Manual

None

(continued)

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Table 1. Model Number Specifications (continued). Order Number

Stages Description

Terminals

Heat

Cool

Systems Switch

Changeover

Led Indication

T8611G2002

TRADELINE®; Full seven-day program capability. Programmable fan and back lighting features. (Fig. 31).

Y1,W1,W2, G,E,L,R,C, O/B,X1,X2, OT,OT

2

1

EM.HT.HEAT-OFFAUTOCOOL

Automatica

CHECKe FAILf

T8611G2028

Same as T8611G2002 except Premier White™, 7-day program capability. Programmable fan and back lighting features. (Fig. 31).

Y1,W1,W2, G,E,L,R,C, O/B,X1,X2, OT,OT

2

1

EM.HT.HEAT-OFFAUTOCOOL

Automatica

CHECKe FAILf

T8611M2017

TRADELINE®; full 7-day program capability. Programmable fan and back lighting features.

Y1,Y2/W2, W3,G,E,L, R,O/B,C,X1, X2,OT,OT

3

2

EM.HT.HEAT-OFFAUTOCOOL

Automatica

CHECKe FAILf

T8611M2025

Same as T8611M2017 except Premier White™, 7-day program capability. Programmable fan and back lighting features.

Y1,Y2,W2, W3,G,E,L,R, O/B,C,X1, X2,OT,OT

3

2

EM.HT.HEAT-OFFAUTOCOOL

Automatica

CHECKe FAILf

PC8900A1007/ W8900B1002

TRADELINE®; Perfect Climate Comfort Center™ Control System. 7-day (auto copy) programming.

R,C,RH,Y1/ W1,G,O/B, AUX,E,Y2, W2,L

3

2

EM.HT.HEAT-OFFAUTOCOOL

Automatica

CHECKg SYSTEMb

a In freezing climates, be sure the cooling compressor has adequate cold start protection. b SYSTEM LED lights when heating or cooling equipment is running. c CHECK LED indicates compressor malfunction. d EM. HT. LED indicates compressor malfunction. e CHECK LED comes on when 24 Vac is applies to the L terminal. f FAIL LED come on when a complete cirucuit is made on the X1 and X2 terminals. g CHECK LED lights to alert homeowner to HVAC maintenance or service needs.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Thermostat Descriptions and General Information This section describes some of the heat pump thermostats that Honeywell manufactures. Since heat pumps require thermostats with special features such as control of changeover valves, this section also explains some of the features and requirements unique to heat pump thermostat applications.

Electromechanical Heat Pump Thermostats T841 Heat Pump Thermostats The T841 models control two-stage heat and one-stage cool in heat pump systems, using manual changeover. Heat anticipators are either adjustable or fixed; cooling anticipator is fixed. T841A models include up to three LED indicator lights; T841B models include up to two LED indicator lights. Provision for an outdoor reset to improve thermal performance is also available on select models.

Y594 Combination Packs for Heat Pump Applications The Y594 Packs combine the appropriate T874 Multistage Thermostat and the Q674 Subbase for specific heat pump applications. Y594G models have automatic changeover; Y594R model has manual changeover. Heat anticipators are either adjustable or fixed; cooling anticipator is fixed. Accessories include tamper-resistant cover and locking lever assembly with thermometer, locking lever stops, outdoor thermistor, TG504 Key Lock® Cover, and the TG511 Versaguard™ Universal Thermostat Guard.

Outdoor Reset Some heat pump thermostats apply outdoor reset to minimize the effect of the interstage differential. It takes more than a one-degree change in temperature to initiate the second stage of heating. Added to a certain amount of droop under high loads, there can be a fairly large offset between the setpoint temperature and the room temperature. To correct this difference, an outdoor thermistor is used. In warm weather, the outdoor thermistor has a very low resistance, permitting a large amount of current to flow in the heater. This reduces the call for second stage heating. In cool weather, the outdoor thermistor has a very high resistance, permitting a small amount of current to flow in the heater. When this happens, calls for second stage heating are more frequent. This helps reduce the difference between the setpoint temperature and the room temperature. Select one of the following T841 or Y594 models if a thermostat with outdoor reset capability is required: T841A1555 Y594G1161 Y594R1763 If an outdoor thermistor is not provided, use the Honeywell C815A Outdoor Thermistor, ordered separately. NOTE: All Honeywell electronic heat pump thermostats are droopless controls and do not require the use of outdoor reset.

Electronic Non-programmable Heat Pump Thermostats T8411 Electronic Heat Pump Thermostats The T8411 models control two-stage heat and one-stage cool in heat pump systems, using manual changeover only. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 3, 6, or 9 cph. Setpoints are permanently held in memory (no batteries required) and retained during power failures. Electronic thermostats provide droopless temperature control.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE T8511 Deluxe Electronic Heat Pump Thermostats The T8511 models control two-stage heat and one-stage cool in heat pump systems, using manual or automatic changeover. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 3, 6, or 9 cph. Setpoints are permanently held in memory (no batteries required) and retained during power failures. Electronic thermostats provide droopless temperature control. The T8511 models also include a backlit display and outdoor sensing capability.

Electronic Programmable Heat Pump Thermostats T8011 Standard Electronic Heat Pump Thermostats The T8011 models provide two-stage heat and one-stage cool control for heat pump systems, using manual changeover. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 1, 3, 6, or 9 cph. The user can program up to four time periods and temperature setpoints. All programs and setpoints are permanently held in memory in the event of a power outage. Electronic thermostats provide droopless temperature control.

Chronotherm® III Electronic Heat Pump Thermostats The T8611 Chronotherm III models provide up to three-stage heat and two-stage cool control for heat pump systems, using manual or automatic changeover. Models are available with selectable daily schedules for weekdays, Saturday, and Sunday; or full 7-day programming. Models include LED indication for system operation and status. Battery backup, with low battery indication, maintains clock and memory during power outages. Adjustable second stage cycling allows for use of the thermostat with electric heat or fossil fuel while providing optimum comfort.

Using the Chronotherm III or Chronotherm IV T8611M on Two-Speed Heat Pump Compressor Equipment The T8611M is a three-stage heat/two-stage cool thermostat used to control multistage heat pump equipment. However, there is no difference in controlling multistage equipment and in controlling two-speed multistage equipment. The differential required between stage 1 and stage 2 in multistage equipment is the same as the differential required between low-speed and high-speed in two-speed equipment. To connect the T8611M to two-speed heat pump equipment: 1. Connect the Y terminal to the low-speed compressor terminal. 2. Jumper the Y2 and W2 terminals.a 3. Connect the Y2 terminal to the high-speed compressor terminal.a 4. Connect all other terminals as shown in the wiring diagram below. 5. Configure the O/B terminal for changeover in either heating or cooling.

Equipment Function

Equipment Terminals

T8611M Terminals

Transformer Common

C

C

Power

R

R

Fan

G

G

Cooling Changeover

O

O

Heating Changeover

B

B

1st Stage Compressor

Y

Y

2nd Stage Compressor

Y2

Y2

or or

O/B O/B

a

W2 Third Stage Heat

W3

W3

Emergency Heating

E

E M13229

Fig. 1. Using the T8611M on two-speed heat pump compressor equipment. a On selected T8611M models, the high speed compressor is wired to the Y2 terminal. In these cases, no jumper is required.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Chronotherm IV Electronic Deluxe Heat Pump Thermostats The T8611 Chronotherm IV thermostat models provide up to three-stage heat and two-stage cool control for heat pump systems, using manual or automatic changeover. These models provide full 7-day programming capability. Models with programmable fan operation are available for homeowner comfort. Backlighting on the large display makes the LCD very easy to read. Adaptive Intelligent Recovery™ control brings the room temperature to the desired temperature setpoint at the programmed time, maximizing comfort and energy savings. First stage heat anticipation is fixed; second stage heat anticipation is selectable.

Adaptive Intelligent Recovery™ Control (Night Setback and Heat Pumps) Heat pump applications are ideal for night setback and energy savings. However, in order to maximize the energy saved in a night setback mode, use the T8611 Chronotherm® III or T8611 Chronotherm® IV Thermostats with Adaptive Intelligent Recovery™ control. Adaptive Intelligent Recovery™ control assures that the comfort setting is achieved at the programmed time regardless of weather conditions. Conventional recovery starts recovery at the beginning of the programmed time period and uses the equipment to achieve the comfort settings as soon as possible. Unlike the Chronotherm III models, the Adaptive Intelligent Recovery control can be turned off in the Installer Set-up mode in the Chronotherm IV thermostat. Honeywell does not recommend this because the auxiliary heat comes on when the program time begins, and runs continuously until the setpoint is reached.

Applications Requiring Special System Hookups Using a Chronotherm III T8611G or T8611M on Systems Requiring Separate W1 and Y1 Terminals The Chronotherm III T8611G and T8611M are designed with only one common compressor terminal. The Y terminal is energized on a call for stage 1 heat and stage 1 cool. However, some multistage heat pump equipment requires one terminal to be energized on a call for stage 1 heat (W1) and one terminal to be energized on a call for stage 1 cool (Y1). In order for the T8611G or T8611M to accommodate this requirement, a separate switching relay must be added to the installation. See the following wiring diagrams for heat pumps that provide changeover in the heating mode and for heat pumps that provide changeover in the cooling model.

Heat Pumps with Heating Mode Changeover Here is how the switching relay allows the system to work properly: * The Y terminal is connected to the equipment terminal W1 through the normally closed contacts on the R8222B Switching Relay. When the thermostat calls for heat, the thermostat Y terminal activates the first stage of heating. * The O terminal is connected to the coil terminals on the R8222B Switching Relay. When the system switch is in the COOL position, the O terminal is energized, reversing the logic of the Chronotherm III T8611G and T8611M Y terminal. Now when the thermostat calls for cooling, the Y terminal activates the first stage of cooling.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Equipment Terminals

T8611M Terminals

Power

R

R

1st Stage Cool

Y1

2nd Stage Cool

Y2

Y2

Fan

G

G

1st Stage Heat

W1

2nd Stage Heat

W2

W2

Transformer Common

C

C

Equipment Function

Y

O Heating Changeover

R8222B Relay

B

B M13231

Fig. 2. Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover.

Heat Pumps with Cooling Mode Changeover Here is how the switching relay allows the system to work properly: * The Y terminal is connected to the equipment terminal Y1 through the normally closed contacts on the R8222B Switching Relay. When the thermostat calls for cooling, the thermostat Y terminal activates the first stage of cooling. * The B terminal is connected to the coil terminals of the R8222B Switching Relay. When the system switch is in the HEAT position, the B terminal is energized, reversing the logic of the Chronotherm® III T8611G and T8611M Y terminal. Now when the thermostat calls for heating, the Y terminal activates the first stage of heating. Equipment Terminals

T8611M Terminals

Power

R

R

1st Stage Cool

Y1

2nd Stage Cool

Y2

Y2

Fan

G

G

1st Stage Heat

W1

2nd Stage Heat

W2

W2

Transformer Common

C

C

Equipment Function

Y

B Cooling Changeover

O

R8222B Relay

O M13230

Fig. 3. Installing an R8222B Switching Relay on heat pumps requiring cooling mode changeover.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Changing Fan Operation in Emergency Heat Mode for Electronic Thermostats In the emergency heat mode (system switch in EM. HT. position), the thermostat controls the fan operation with a call for first stage heat. This means that when the thermostat calls for heat, the thermostat also calls for fan operation. However, this fan operation is not desirable on some types of systems. To change the fan operation on the TRADELINE and SUPER TRADELINE models, follow the wiring diagram shown below. Connecting the thermostat and relay to the equipment in this manner disables the fan switch in the emergency heat mode. During normal operation, the fan switch is enabled and the fan operation is as described in the installation instructions. R (Power) E

C (Common) E (EM. Heat)

G

G (Fan)

Thermostat

R8222B Relay

Equipment M13232

Fig. 4 Changing fan operation in emergency heat mode for electronic thermostats.

Heat Pump Manufacturer Relay Wiring Connections The wiring connections for some thermostats to specific types of heat pump equipment require a separate relay for proper operation. Refer to Fig. 5 through 13 for the wiring connections of these types of equipment.

Equipment Function

Existing Control Terminal Designation

Transformer Common

C

1st Stage Cooling

Y1

1st Stage Heating

W1

New Terminal Designation C

Y O M13235

Fig. 5. Relay wiring connections for Carrier equipment (typical 38BQ), and T8511M, T8611M, PC8900/W8900B1002. Require relay (R8222B1067 typically) for proper operation.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Equipment Function

Existing Control Terminal Designation

New Terminal Designation

Common

Black

C

Power

Red

R

A

L

Emergency Heat

E

M13241

Fig. 6. Relay wiring connections for Evcon/Coleman equipment (3200, 3300). Requires R8222B1067 Relay to operate system. Equipment requires normally energized emergency heat.

Common

Black

New Terminal Designation or C X

Power

Red

R

Equipment Function

Emergency Heat

Existing Control Terminal Designation

A

E M13236

Fig. 7. Relay wiring connections for Evcon/Coleman equipment (3200, 3300, 3360, 3400, 6000, and 6500). Requires R8222B1067 Relay to operate system. Equipment requires normally energized emergency heat.

Equipment Function

Existing Control Terminal Designation

Indoor Power

VR

System Monitor

L

New Terminal Designation R

L

or

X1 M13237

Fig. 8. Relay wiring connections for Lennox equipment (HP9, HP10). Requires R8222B1067 Relay to operate the system monitor light (emergency heat LED) on TRADELINE replacement thermostats. Tape off if light is not desired.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Equipment Function

Existing Control Terminal Designation

Power

VR

System Monitor

L

New Terminal Designation R

L

or

X1

or

F M13238

Fig. 9. Relay wiring connections for Lennox equipment (HP16, HP19, HP21, HP22 Direct Replacements). Requires R8222B1067 Relay to operate the system monitor light (emergency heat LED) on TRADELINE replacement thermostats. Tape off if light is not desired.

Equipment Function

Existing Control Terminal Designation

Power

R

System Monitor

X1

New Terminal Designation R

L

or

X1 M13239

Fig. 10. Relay wiring connections for Magic Chef equipment (PE Series). Requires R8222B1067 Relay if outdoor section has reset shunt relay and malfunction light indicator is desired on thermostat.

Equipment Function Power System Monitor

Existing Control Terminal Designation or R1 R L

or

New Terminal Designation R

X

L

or

X1 M13240

Fig. 11. Relay wiring connections for Mammoth. Requires R8222B1067 Relay if outdoor section has reset shunt relay and malfunction light indicator is desired on thermostat.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

PC8900 Terminals

Equipment Function

Equipment Terminals

Transformer Common

C

C

Power

R

R

Fan

G

G O/B

1st Stage Heating

W1

Y1/W1

1st Stage Cooling

Y1

Changeover Valve

B

2nd Stage Heating

W2

Aux.

Emergency Heat

E

E

2nd Stage Cooling

Y2

Y2 M13233

Fig. 12. Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a heating changeover.

PC8900 Terminals

Equipment Function

Equipment Terminals

Transformer Common

C

C

Power

R

R

Fan

G

G O/B

1st Stage Cooling

Y1

Y1/W1

1st Stage Heating

W1

Changeover Valve

O

2nd Stage Heating

W2

Aux.

Emergency Heat

E

E

2nd Stage Cooling

Y2

Y2 M13234

Fig. 13. Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a cooling changeover.

70-6627 • 12

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Understanding Circuits To understand wiring diagrams, it is important to know what all the symbols mean and how to trace the path of the circuits from the transformer. Circuit descriptions and terminology are defined as follows: Auto changeover—refers to the presence of an AUTO position in the system switching (EX: Q674F with OFF-COOL AUTO-HEAT-EM. HEAT switching). The thermostat automatically changes between heat and cool modes as indoor temperature changes. Manual changeover—requires a system switch movement to change mode (EX: Q674L with EM. HT.-HEAT-OFFCOOL switching). Cool changeover valve—operates on cooling. The reversing valve or relay is activated either by moving the system switch to COOL (manual changeover) or by a mercury switch that makes on a temperature rise (auto changeover). Heat changeover valve—operates on heating. The reversing valve or relay is activated either by moving the system switch to HEAT (manual changeover) or by a mercury switch that makes on a temperature fall (auto changeover). System monitor relay—optional equipment on some heat pumps. This system monitor relay detects a malfunction in the compressor and indicates the malfunction by activating the EMERGENCY HEAT LED on the switching subbase. The system monitor relay may be wired to the L terminal on some thermostats Each mercury switch is identified by function: H1—Stage 1 Heating. H2—Stage 2 Heating. H3—Stage 3 Heating. C1—Stage 1 Cooling. C2—Stage 2 Cooling. C3—Stage 3 Cooling. C/O—Changeover (heat pumps). Each anticipator is identified and each switch affected is named (EX: H1 anticipator, C1 anticipator). All T874 Multistage Thermostats use mercury switches. Each schematic indicates switch operation by being drawn in the open position with an arrow indicating operation with a temperature RISE or FALL. KEY TO HOOKUP SYMBOLS

TRANSFORMER (24 VAC SECONDARY)

RELAY/CONTACTOR CONTACTS B TERMINAL

RELAY OR CONTACTOR COIL LED

MERCURY SWITCH

ODT OUTDOOR THERMOSTAT EHR EMERGENCY HEAT RELAY

FIXED ANTICIPATOR HIGH RESISTANCE (TYPICALLY 5 KILOHMS)

RTD TIME DELAY RELAY RD DEFROST RELAY

ADJUSTABLE ANTICIPATOR LOW RESISTANCE (TYPICALLY 0 TO 5 OHMS)

CHP PRESSURE SWITCH LACO LOW AMBIENT CUTOFF M5848

Fig. 14. Key to hookup symbols.

70-6627 • 13

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

NEMA Standard Transformers Give You Better Control UL sets the safety standards all transformers must meet. But these are minimum standards. The Honeywell AT20A, AT40A, AT72D and AT87A Transformers do even more; they meet tough voluntary standards of the National Electrical Manufacturer’s Association (NEMA). Why is this so important? Because today’s sophisticated control systems require reliable, accurate voltage output for optimal system performance. It’s especially important for electrical controls (OEM boards in high efficiency furnaces, for example) or resistive heaters, such as thermostat heat anticipators. For better performance, some heat pumps require a NEMA standard transformer. Conformance to NEMA standards assures the voltage output of a transformer will remain within acceptable limits, regardless of load conditions. No excessively high open-circuit voltage under light load conditions. No low, “brown-out” voltage levels under heavy load conditions. At 100% load, the transformer secondary must supply between 23 and 25 volts to meet the NEMA standard. How can you tell that the transformers you buy meet this tough, high standard? Look for the transformer to be marked: NEMA Type B (20VA), NEMA Type D (40VA), NEMA Type E (48-50 VA). Only transformers conforming to the NEMA standard can be marked in this way. The following are recommended Honeywell NEMA standard transformers: AT72D1691, AT72D1683, AT87A1106 27 26 25 SECONDARY VOLTAGE

24 23 22 21 20 19 18 17 16 15 14 0

50

100 % OF LOAD

200

150 M993

Fig. 15. NEMA Class 2 transformer band.

70-6627 • 14

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Typical System Hookup Diagrams L1 L2 (HOT)

1 ODT 1

RTD 1

H1 C1 FALL

FAN SWITCH

EHR 1

RTD 2

AUTO H1/C1 ANTICIPATOR

ODT 2

ON

EHR 2

RTD 3

G FAN RELAY R W2 H2 ANTICIPATOR

AUX. HT. LED (GREEN)

RTD 1

E RD

H2

EM. HT. RELAY L FALL

2 EM. HT. HEAT

EM. HT. LED (RED)

SYSTEM MONITOR

B HEAT CHANGEOVER VALVE

OFF COOL

X LACO

CHP

Y SYSTEM SWITCH

O 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

NO AUTO FAN IN EMERGENCY HEAT.

COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE M6060A

Fig. 16. Internal schematic and typical wiring diagram for T841A1308.

70-6627 • 15

HEAT PUMP TH ERMOSTAT CROSS REFERENCE/SELECTION GUIDE

G 9

FAN RELAY

H1

W

C1

2

FALL C ANTICIPATOR

U

2 FAN SWITCH

AUX. HEAT LED (GREEN) B

3 H1/C ANTICIPATOR

AUTO

AUX. HEAT RELAY

EM. HEAT LED (RED)

ON

5

F COMPRESSOR MONITOR

8

L1 (HOT) L2

R OUTDOOR THERMOSTAT

11 SYSTEM SWITCH

FALL

T

HEAT

H2 10

OFF

1

COOL

1

X2

3 EM. HT.

12

OUTDOOR THERMISTOR

O

COOL CHANGEOVER RELAY COMPRESSOR CONTACTOR

RESET 4 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

FIELD REMOVABLE JUMPER.

3

AUTO FAN IN EMERGENCY HEAT.

Y M8728

Fig. 17. Internal schematic and typical wiring diagram for T841A1555. W3

FALL

W3 RELAY

O COOL CHANGEOVER RELAY

10

H1 C1

5

FAN SWITCH AUTO

2

H1 ANTICIPATOR

EM. HEAT LED (RED)

ON G 3

C1 ANTICIPATOR

FAN RELAY

R

E

6

8

SYSTEM SWITCH EM. HT.

12 FALL

H2

H2 ANTICIPATOR

HEAT

EM. HEAT RELAY

X AUX. HEAT LED (GRN) W2

AUX. HEAT RELAY

OFF

11 COOL

B HEAT CHANGEOVER RELAY

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

COMPRESSOR CONTACTOR Y

Fig. 18. Internal schematic and typical wiring diagram for T841A1712 and T841A1738.

70-6627 • 16

1

L1 (HOT)

9

7

L2

M13249

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

W1

H1/C1 ANTICIPATOR

HEAT RELAY 1 W2

H1

C1 HEAT RELAY 2

FALL B

HEAT CHANGEOVER VALVE

FAN SWITCH AUTO

G ON FAN RELAY

L1 (HOT) L2 1

R SYSTEM SWITCH X

HEAT

H2 ANTICIPATOR

OFF Y1 H2

COOL FALL

COMPRESSOR CONTACTOR O COOL CHANGEOVER VALVE

1

M6068A

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

Fig. 19. Internal schematic and typical wiring diagram for T841B1000.

C815A OUTDOOR THERMISTOR

FALL

T FAN SWITCH

H1

FAN RELAY AUTO

H1 ANTICIPATOR

G ON CHANGEOVER VALVE O

H2

L1 (HOT) L2 1

R FALL SYSTEM SWITCH

RESET HEATER

X2 OUTDOOR THERMOSTAT

EM .HT. RISE

W AUTO

CHANGEOVER

OFF

AUX. HT. LED (GREEN)

AUX. HT. RELAY

B EM. HT. LED (RED) C1 ANTICIPATOR

F

Y RISE C1

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

M1593

Fig. 20. Internal schematic and typical wiring diagram for Y594G1161.

70-6627 • 17

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

1 FALL

O FAN SWITCH

H1 ANTICIPATOR

COOL CHANGEOVER VALVE

AUTO

2

G ON

H1

B RELAY

FAN RELAY

B 4 L1 (HOT)

R

6

SYSTEM SWITCH

H2 ANTICIPATOR

OFF EM. HT.

H2 FALL

HEAT

L2 E

1 EM. HT. RELAY

L EM. HT. LED (RED)

AUTO X RISE

COOL

8 C1

AUX. HEAT LED (GREEN) AUX. HEAT RELAY

9 W2

C1 ANTICIPATOR

Y 10 COMPRESSOR CONTACTOR

11 RISE

CO

1 12

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

M8702

Fig. 21. Internal schematic and typical wiring diagram for Y594G1633. 1 CHANGEOVER (HEAT)

W3 RELAY W3

AUTO 2

FALL

FAN SWITCH

H1 ANTICIPATOR

G

ON

FAN RELAY L2 1

3 R

L1 (HOT)

4

FALL

W2 H2

EM. HT. RELAY

5

H1 FALL 6

CHANGEOVER (COOL)

SYSTEM SWITCH

8

OFF

9

EM. HT.

RISE

AUX. HEAT RELAY

E

H2 ANTICIPATOR

HEAT

AUX. HT. LED (GREEN)

X1 COMPRESSOR CHECK FAULT LED (RED) X2

EM. HT. LED (RED)

AUTO 10 C1 ANTICIPATOR

COOL

X COOL CHANGEOVER VALVE O

C1 RISE

B 11 W1 RELAY

HEAT CHANGEOVER VALVE

W1 2

COMPRESSOR CONTACTOR

Y1 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

W1 - Y1 JUMPER IS Y TERMINAL; REMOVE JUMPER WHEN W1 RELAY IS USED.

Fig. 22. Internal schematic and typical wiring diagram for Y594G1419 and Y594G1476.

70-6627 • 18

M8703

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

G

1

FAN RELAY W 2

AUX. HEAT LED (GREEN)

AUTO H1

U

2

AUX. HEATER RELAY

ON

C1

B 3

FALL

EM. HEAT LED (RED)

FAN SWITCH

COMPRESSOR MONITOR

F 1 4

L1 (HOT) L2

R

H2 5

FALL

SYSTEM SWITCH T EM. HEAT

6

HEAT

OUTDOOR SENSOR

X2 OFF 11

OUTDOOR THERMOSTAT

COOL O

1

COMPRESSOR CONTACTOR

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

COOL CHANGEOVER VALVE

Y M8701

2 FIELD REMOVABLE JUMPER.

Fig. 23. Internal schematic and typical wiring diagram for Y594R1763.

2 H1 AND C1 ANTICIPATOR 3

L2 FAN SWITCH

EM. HEAT LED (RED)

C1 FALL

4 H2 ANTICIPATOR H2

FALL

1

L

AUTO

H1

L1 (HOT)

R

ON

X AUX. HEAT LED (GRN)

AUX. HEAT RELAY

W2

6 SYSTEM SWITCH

FAN RELAY G

EM. HT.

COOL CHANGEOVER VALVE

HEAT OFF COOL

O

E EM. HEAT RELAY

COMPRESSOR CONTACTOR

Y "B" RELAY B M8700

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

Fig. 24. Internal schematic and typical wiring diagram for Y594R1797.

70-6627 • 19

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

W3

W3 RELAY

O COOL CHANGEOVER VALVE COMPRESSOR MONITOR

L H1 ANTICIPATOR 1

FAN RELAY

FAN SWITCH

G

AUTO ON

C ANTICIPATOR

L1 (HOT) L2

R

2

1 H1

W2

3 C

EM. HT. LED (RED)

FALL 4

5 H2 ANTICIPATOR H2

6

SYSTEM SWITCH

AUX. HT. LED (GRN)

AUX. HT. RELAY

E EM. HT. RELAY

EM. HT. HEAT

X

OFF

3

FALL COOL

X2

HEAT CHANGEOVER VALVE

B 11

W1 RELAY

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

W1

2 REMOVE JUMPER WHEN W1 RELAY IS USED.

2

3 FACTORY-INSTALLED JUMPER.

Y

COMPRESSOR CONTACTOR

Fig. 25. Internal schematic and typical wiring diagram for Y594R1425.

70-6627 • 20

M8713

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

2 L1 (HOT) L2 1

R POWER SUPPLY

HIGH LIMIT C/X FAN SWITCH

AUX. HT. LED (GREEN) EM. HT. LED (RED)

ON THERMOSTAT LOGIC CIRCUIT

SUBBASE LOGIC/ CONTROL CIRCUIT

AUTO

L MONITOR

AUX. HT. RELAY

W2 HEAT 2 FAN RELAY G EM. HT. RELAY SYSTEM SWITCH

E

EM. HT. COOL CHANGEOVER VALVE

HEAT OFF

C. O. O

AUTO HEAT CHANGEOVER VALVE

COOL C. O. B COOL Y HIGH LIMIT

HEAT 1

COMPRESSOR CONTACTOR

X1 3 CHECK LED (YELLOW)

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2 3

X2

DENOTES THERMOSTAT TO SUBBASE INTERCONNECT. POSSIBLE CHECK LED CIRCUITS: X1

TO R

FAULT DETECTION CHECK SWITCH LED (YELLOW) X2

TO C/X

SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER

X1

TO R

CHECK LED (YELLOW) FAULT DETECTION SWITCH X2

TO C/X

SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER

X1 SWITCHING CHECK DEVICE LED (YELLOW) 24 VAC

L1 (HOT) L2

X2 SWITCH IN SECONDARY OF SEPARATE TRANSFORMER

M6020A

Fig. 26. Typical wiring diagram for T8611G1004 and T8611G1103.

70-6627 • 21

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

L1 (HOT) L2 1

R POWER SUPPLY

4

HIGH LIMIT

3 C

FAN SWITCH

AUX. HT. LED (GREEN) EM. HT. LED (RED)

ON THERMOSTAT LOGIC CIRCUIT

SUBBASE LOGIC/ CONTROL CIRCUIT

AUTO

L AUX. HT. RELAY

MONITOR W3 HEAT 3

STAGE 2 RELAY W2

HEAT 2 EM. HT. RELAY E FAN RELAY

SYSTEM SWITCH

G

EM. HT.

COOL CHANGEOVER VALVE

C. O.

HEAT

O

OFF HEAT CHANGEOVER VALVE

C. O.

AUTO

B COOL STAGE 1 COMPRESSOR CONTACTOR

COOL 1

Y HEAT 1 STAGE 2 COMPRESSOR CONTACTOR

HIGH LIMIT

Y2 COOL 2

S1

S1

S2

S2

S3

S3

6

5 X1 2 CHECK LED (YELLOW)

200905 REMOTE SENSOR

X2

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

POSSIBLE CHECK LED CIRCUITS: X1

TO R

FAULT DETECTION CHECK SWITCH LED (YELLOW) X2

TO C

SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER

X1

TO R

CHECK LED (YELLOW) FAULT DETECTION SWITCH X2

X1 SWITCHING CHECK DEVICE LED (YELLOW) 24 VAC

TO C

SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER

L2

X2 SWITCH IN SECONDARY OF SEPARATE TRANSFORMER

3

SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL.

4

NOMINAL 24 VAC POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATIONS.

5

AVAILABLE ONLY ON MODLES WITH SEPARATE SENSOR FOR REMOTE TEMPERATURE SENSING.

6

RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 FT. (61 M) MAXIMUM LENGTH. ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE.

Fig. 27. Typical wiring diagram for T8611M7008.

70-6627 • 22

L1 (HOT)

M2656

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

L1 (HOT) L2 1

R POWER SUPPLY

HIGH LIMIT C EM. HT. LED (RED)

3 FAN SWITCH THERMOSTAT LOGIC CIRCUIT

SUBBASE LOGIC/ CONTROL CIRCUIT

AUX. HT. LED (GREEN)

MONITOR

L

AUX. HT. RELAY

ON W2 AUTO HEAT 2

EM. HT. RELAY E STAGE 1 HEAT RELAY W1 FAN RELAY

SYSTEM SWITCH

G

EM. HT. O

HEAT

2 OFF COOL

COOL CHANGEOVER VALVE

B HEAT CHANGEOVER VALVE

HIGH LIMIT

Y1 HEAT 1

COMPRESSOR CONTACTOR

COOL 1 P 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

REMOVE JUMPER FOR SYSTEM WITH ISOLATED STAGE 1 HEATING AND COOLING CONNECTIONS.

DEFROST CONTROL M6019A

DENOTES THERMOSTAT TO SUBBASE INTERCONNECT.

3

Fig. 28. Typical wiring diagram for T8611R1000. L1 (HOT)

R

THERMISTOR SENSOR

STAGE 2 RELAY

L2

AUXILARY HEAT RELAY

THERMOSTAT LOGIC

SYSTEM SWITCH

1

W2 RELAY

EM. HT. L HEAT

CHANGEOVER VALVE HEAT

OFF B CHANGEOVER VALVE COOL

COOL O

COMPRESSOR CONTACTOR

STAGE 1 RELAY Y

2

COMPRESSOR CONTACTOR HEAT

W1 EMERGENCY HEAT RELAY FAN SWITCH

E FAN RELAY

ON G POWER SUPPLY

AUTO C

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).

M11333

Fig. 29. Typical wiring diagram for T8011R and T8411R.

70-6627 • 23

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

1 L1 (HOT) L2

R

C

POWER SUPPLY

COMPRESSOR CONTACTOR HEAT

W1

W2

W1 AUXILIARY HEAT RELAY W2 THERMOSTAT LOGIC

EMERGENCY HEAT RELAY

3 W2

E

W1

COMPRESSOR CONTACTOR E

Y1

G

O/B

Y1

FAN RELAY E G Y1 G

2

O/B

CHANGEOVER VALVE

O/B

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

O/B IS FIELD CONFIGURABLE TO SELECT ENERGIZED IN HEATING OR COOLING. (DEFAULT IS ENERGIZED IN HEATING).

3

REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y1).

COMPRESSOR MONITOR

CHECK LED (RED) L

TO R

OT OUTDOOR SENSOR C7089B OT M13281

Fig. 30. Typical wiring diagram for T8511G.

70-6627 • 24

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

1 L1 (HOT) L2

R

C

POWER SUPPLY W2

COMPRESSOR CONTACTOR HEAT

W1

E

W1 AUXILIARY HEAT RELAY W2

THERMOSTAT LOGIC

EMERGENCY HEAT RELAY

4 E COMPRESSOR CONTACTOR Y1 3

CHANGEOVER VALVE

O/B Y

O/B G G FAIL LED (RED)

FAN RELAY X1

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

WIRES TO OT TERMINALS SHOULD NOT SHARE CABLE WITH OTHER CONNECTIONS.

3

INSTALLER CONFIGURABLE. FACTORY DEFAULT IS O-ENERGIZED IN COOL MODE.

4 FACTORY-INSTALLED JUMPER; REMOVE IF A HEAT RELAY IS CONNECTED TO W1.

COMPRESSOR MONITOR

X2 CHECK LED (RED)

TO R

L

OT 2

OUTDOOR SENSOR C7089B

OT M13250

Fig. 31. Typical wiring diagram for T8611G2002 and T8611G2028.

70-6627 • 25

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences of Operation T8011 Programmable Heat Pump Thermostat and T8411 Electronic Heat Pump Thermostat Sequence of Operation The Fan, Heat and Cool outputs are relay controlled. A loss of ac power, or a change in the SYSTEM switch setting can cause the outputs to turn off. Table 2 shows the sequence of operations for the Fan settings and System modes. Table 2. T8011 and T8411 Sequence of Operation. FAN Switch Settings

SYSTEM Switch Settings

Call for Action

Auto

Cool

None

Auto

Cool

Cooling

Auto

Heat

None

Auto

Heat

Stage 1 Heat

B, W1, G

Auto

Heat

Stage 2 Heat

B, W1, W2, G

Auto

Em. Ht.

None

Auto

Em. Ht.

Stage 1 Heat

L, E, G

, Em Ht indicator

Auto

Em. Ht.

Stage 2 Heat

L, E, W2, G

, Em Ht and Aux Ht indicators

70-6627 • 26

Energize Terminals O

Display Icons None

O, Y, G B

L

None

, Aux Ht indicator Em Ht indicator

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

T8511 Deluxe Electronic Heat Pump Thermostat Sequence of Operation The thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display symbols and words to report the condition of system. See Table 3 for specific information. Table 3. T8511G Sequence of Operation for Separate Compressor Terminal (Y and W1) Models. Fan Selection

System Selection

Call

Energize

Auto

Off

None

On

Off

Fan

Auto

Cool

None

Auto

Cool or Auto

Cooling

Auto

Heat

None

Auto

Heat or Auto

Stage 1 heating

O/B a, W1, G

and

Auto

Heat or Auto

Stage 2 heating

O/B a, W1, W2, G

,

Auto

Em Heat

None

Auto

Em Heat

Stage 1 heating

O/B a, E, G

,

and Em Ht

Auto

Em Heat

Stage 2 heating

O/B a, E, W2, G

,

, Em Ht and Aux Ht

Auto

Auto

None

None

Display Icons None

G O/B a O/B a, G, Y1 O/B a

O/B a

O/B a

None and None

, and Aux Ht

Em Ht

None

a Configure O/B (Select Models) in Installer Setup.

70-6627 • 27

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

T8611 Chronotherm IV Deluxe Programmable Heat Pump Thermostat Sequence of Operation The thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display the time, room temperature, system and fan selection. Symbols will be displayed when the heating, cooling or fan is energized. See Table 4 for specific information. NOTE: Terminals listed in the Energize column vary depending on model. Table 4. Heat Pump System Sequence of Operation.

Selection Fan

System

Call

Auto

Off

None

None

On

Off

None

G

Auto

Cool

None

O or O/B a

Auto

Cool or Auto

Stage 1 Cooling

Energize

O or O/B a with

Display Icons None

None and

G and Y1 Auto

Heat

None

B or O/B a

None

Auto

Heat or Auto

Stage 1 heating

B or O/B a with W1 and G

Auto

Heat or Auto

Stage 2 heating

B or O/B a with W2, W1 and G

Auto

Em Heat

None

Auto

Em Heat

Stage 1 heating

B or O/B a, E and G (select models)

,

and Em Ht

Auto

Em Heat

Stage 2 heating

B or O/B a, E and W2 and G (select models)

,

, Em Ht and Aux Ht

Auto

Auto

None

B or O/B a

O/B a, O or Bb

a Configure O/B (select models) in Installer Setup. b Based on last piece of equipment called (cooling = O or heating = B) and Installer Setup selection.

70-6627 • 28

and ,

, and Aux Ht

Em Ht

None

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Thermostat Manufacturer Cross Reference MANUFACTURER American Stabilis a

MODEL NUMBER

HONEYWELL REPLACEMENT

HP-1

T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611R, T8611G

HP-1EF

T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611R, T8611G

HP-10EFb

T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611R, T8611G

HP-15

Y594G1252, T8411, T8511, T8011, T8611R, T8611G,

a See page 37 for hookup details. b Compressor protection is generally provided by the equipment manufacturer.

MANUFACTURER Carrier Totalineb,c Multistage Heat Pump

MODEL NUMBER

HONEYWELL REPLACEMENT

MP10/11

T8611G

MP30

T8611M

MS10/11

Y594R1425

MS12/13

T841A1316 a

MS20/21

Y594G1419

a Use with ST82 Time Delay Relay for extended fan operation. b See pages 42-45 for hookup details. c Carrier thermostats manufactured by American Stabilis.

MANUFACTURER

HONEYWELL REPLACEMENT a

MODEL NUMBER

Climate Technology Corporation CTC400

T841A1316, Y594G1419, T8411, T8511, T8011, T8611

CTC403

T841A1316, Y594G1419, T8411, T8511, T8011, T8611,

a Use T8611M or W8900B for 3 heat, 2 cool applications.

MANUFACTURER Enerstat b

MODEL NUMBER

HONEYWELL REPLACEMENT

DSP400

T841A1001 a

DSP410

T841A1001 a

DSP600

T874W1031/Q674L1546, Y594W1014

a Provision for optional remote sensor, not provided. b See page 49 for hookup details.

70-6627 • 29

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

MANUFACTURER General Electrica

MODEL NUMBER

HONEYWELL REPLACEMENT

3AAT86B21A1

Y594G1161, T8411, T8511, T8011, T8611

3AAT86B14A1

T841A1316, Y594R1425, T8411, T8511, T8011, T8611

3AAT86B16D1

T841A1316, Y594R1425, T8411, T8511, T8011, T8611

3AAT80A1A1

T841A1712, Y594R1425, T8411, T8511, T8011, T8611

3AAT80A2A1

T841A1712, Y594R1425, T8411, T8511, T8011, T8611

3AAT80B1A1

Y594G1161, T8411, T8511, T8011, T8611

3AAT86B1A1

Y594G1161, T8411, T8511, T8011, T8611

a See pages 57-58 for hookup details.

MANUFACTURER Lennox a

MODEL NUMBER

HONEYWELL REPLACEMENT

51H3901 (3AAB83C38)

T841A1316, Y594R1425, T8411, T8511, T8011, T8611G

51H4001 (3AAT88D38B2)

T841A1712, Y594G1419, T8411, T8511, T8011, T8611G

51H4301 (3AAT88D38C2)

T8611M, PC8900A1007/W8900B1002

21J7101 (3AAT89B38D1)

T841A1555, Y594R1763, Y594G1161, T8411, T8511, T8011, T8611G

21J7201 (3AAT89B38E1)

T841A1712, Y594R1425, T8411, T8511, T8011, T8611G

21J7301 (3AAT89B38F1)

T841A1712, Y594G1419, T8411, T8511, T8011, T8611G

a See pages 75-81 for hookup details.

MANUFACTURER Maple Chase

MODEL NUMBER 09520

T841A1316, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611G

09620

T8611M, PC8900A1007/W8900B1002

09720

T8611M, PC8900A1007/W8900B1002

MANUFACTURER Seco a

MODEL NUMBER

HONEYWELL REPLACEMENT

TA2000

T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011, T8611

TA2010

T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011, T8611

TA2040

T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011, T8611

TA2050

T841A1001, Y594R1425, Y594G1419, T8411

TA2060

T841A1555 plus C815A1005

a See pages 92-93 for hookup details.

70-6627 • 30

HONEYWELL REPLACEMENT

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

MANUFACTURER Trane a,b Single-Stage Heat Pump

Multistage Heat Pump

MODEL NUMBER

HONEYWELL REPLACEMENT

BAY28X182/BAY28X185 (T874A1184/Q674B1141)

T874A1036/Q674B1075

BAY28X182/BAY28X187 (T874A1184/Q674E1033)

T874A1036/Q674C1058

BAYSTAT009 (T874A1085/Q674B1018)

T874A1036/Q674B1018

ASYSTAT651

Y594G1161, T8411, T8511, T8011, T8611

AY28X138

Y594G1161, T8411, T8511, T8011, T8611

AY28X139

T841A1068, Y594R1763, T8411, T8511, T8011, T8611

AY28X164

T874D1165/Q674E1049

BAY28X138 (3AAT80B1A1),

Y594G1161, T8411, T8511, T8011, T8611

BAY28X140, BAYSTAT138 BAYSTAT239 (3AAT86B1A1),

T841A1068, Y594R1763, T8411, T8511, T8011, T8611

BAY28X139, BAY28X141, BAY28X153A, (3AAT83F1B2) BAYSTAT240 (3AAT80A1A1) BAYSTAT339 (Y594R1284)

T841A1068, Y594R1763, T8411, T8511, T8011, T8611

BAYSTAT024B

T8611M, PC8900A1007/W8900B1002

TAYSTAT500

T8611R, T8611G

a See pages 97-100 for hookup details. b Trane thermostats manufactured by General Electric or Honeywell.

70-6627 • 31

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

MANUFACTURER White Rodgers a

MODEL NUMBER

HONEYWELL REPLACEMENT

IF56-444

T8034C1234

IF93-36

T8600C1162

IC70-18

T841A1001, Y594G1252

IC70-24

T874D1165/Q674F1022

IC71-2

Y594G1419

IF58-910/S28-1

T841A1217, Y594R1300

IF58-910/S28-2

T841A1423, Y594R1615

IF58-910/S28-16

T841A1316, Y594R1425

IF58-911/S28-5

T841A1316, Y594G1419

IF58-911/S28-17

T841A1001, Y594G1252

IF58-911/S28-18

T841A1068, Y594R1136

IF58-56

T841A1050, Y594R1425

IF58-57

T841A1068, Y594R1136

IF58-58

T841A1217, Y594R1425

IF58-72

T841A1233, Y594R1615

IF58-77

T841A1316, Y594R1425

IF58-78

T841A1217, Y594R1425

IF58-83

T841A1217, Y594R1243

IF59-79

T841A1316, Y594R1425

IF60-25

T8600C1162

IF62-21

T8411, T8511, T8011, T8611R, T8611G

IF82-79

T8411, T8511, T8011, T8611R, T8611G

IF91-71

T8611M, PC8900A1007/W8900B1002

IF92-71

T8611M, PC8900A1007/W8900B1002

IF94-71

T8611M, PC8900A1007/W8900B1002

IF95-71

T8611M, PC8900A1007/W8900B1002

Single-Stage Heat Pump Multistage Heat Pump

a See page 108 for hookup details.

70-6627 • 32

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Tips for Using This Heat Pump Cross Reference This cross reference, alphabetized by equipment or thermostat manufacturer, provides the information needed to choose and wire the Honeywell electromechanical, Chronotherm III, or electronic heat pump thermostats in new installations and replacement applications. It also gives you the opportunity to upgrade the system from a standard to a deluxe thermostat for improved performance and from manual changeover to the convenience of automatic heat/cool changeover and to a Chronotherm® IV thermostat that puts the heat pump to work to save money. Best of all, you can upgrade to the PC8900/W8900B1002 Perfect Climate Comfort Center™ Control System. This one comfort center controls temperature, indoor air quality, ventilation, humidity, and zoning.

To use this Cross Reference: 1. 2.

3. 4.

5. 6.

Identify heat pump equipment manufacturer and refer to those diagrams in this reference. Identify existing subbase model number if made by Honeywell, even if thermostat has equipment manufacturer’s logo, and try to match up for verification. Some typical thermostats and subbases are listed in each section to make identification easier. The Honeywell model number is listed, followed by the equipment manufacturer model number, if available. Make a listing of wiring terminals used and wire colors. You may want to write on the appropriate diagram in this cross reference. Note the unique control requirements your heat pump may have. — Determine reversing valve (changeover) mode. O terminal cool or B terminal heat is typical. — Identify first stage heat terminal. Connect to Y if a common terminal is used for first stage heat and cool, or to W1 if a separate terminal is used for first stage heat. — Identify if device has manual or automatic changeover from heat to cool. — Identify what action, if any, is required for LED selection; e.g., auxiliary heat, emergency heat, check, or fail. Select a replacement based both on the technical requirements and your customer’s needs; e.g., a working family may find a Chronotherm® IV upgrade desirable. After selecting the proper thermostat, use the corresponding control hookup diagram. See example below. Existing Control Terminal Designation C R

7. 8.

Electromechanical Chronotherm III Thermostat Thermostat

Electronic Replacement or Upgrade

X

or to

C

or to

C

or to

C

or to

C

R

or to

R

or to

R

or to

R

or to

R

Hook wire previously on C to X Hook wire previously on R to R

Chronotherm IV Thermostat

Perfect Climate Comfort Center Control System

M13251

Connect only those terminals shown with lines to them on the diagram. Some terminals on the new thermostat may not be used. Refer to the following two pages for an example of a typical cross reference diagram and the associated footnotes.

70-6627 • 33

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

X

C

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y1

Y

Y1

Y

Y1

Y1

Y1/W1

or

Y1 I

5 Y5

94

R1

42

71 A1 41 T8

I

Y

I

I

I

W PC8 89 90 00 0/ B1 00 2

X

T T8 8011 01 R1 1R 00 10 6 14

X

Function

T T8 8411 41 R1 1G 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 L 100 0 4

Common A

2

Y Y5 594G 94 14 G1 19 47 6

Electronmechanical

T T8 8611 61 G2 1G 00 20 2 28 T8 T8 611M T8 611M 100 61 2 2 K 1M2 017 L 02 5

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

E

I

I

1st Stage Heat M

–

W1

W1

Auxiliary Heat

W2

W2

W2

W2

Fan

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

System Monitor/ Sytem Defrost

–

L

Em. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Heat Loads B

W3

W3

W3

J

J

J

J

J

W3

J

LED Indication

–

X2

X1 X2

–

–

–

X1 X2

X1 X2

–

Defrost

–

–

–

P

–

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

Y2

W2

2nd Stage Cool in two Stage System

–

–

–

–

–

–

–

–

–

Y2

W1

G

L

D

P

H

X1 X2

D

N

W1

W1

W1

W1

–

–

W2

W2

W2

W2

Y2

Aux.

G

L

P

H

P

G or

or

G

P

G

C

O/B

B

B

O

O

C

O/B

L

G

L

H

or

or

L

P C

O/B

B

C

O/B G

P

G

O

or

G

C

O/B

or

C

O/B

L

D

O/B

GH

O/B

L

F

P C

C

G

D

F

O

M13245

70-6627 • 34

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE A B C D E F G H I J K L M N O P

Terminal must be connected to the transformer common. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Configure O/B (Select Models) in Installer Setup. Optional LED indication activated with completed circuit on X1 and X2 terminals. If separate Y1 and W1 terminals are required, install R8222D1014; (See page 12.) When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Do not remove factory-installed jumper. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. Used on two-speed compressor heat pump applications. Used on heat pumps that energize the compressor on both first stage cooling and first stage heating through a common Y terminal. Q674F1022 switching subbase available when separate first stage heat and cool terminals are required. See specific heat pump manufacturer’s listing for hookup information. P terminal on T8611R1000 only. Energized in heating and cooling modes; shown only when used. Jumper W2 and Y2 if stage 2 heating and cooling are common. To change fan operation in Emergency Heat mode, see page 9.

X1 CHECK LED (YELLOW) X2

TO R FAULT DETECTION SWITCH

TO C/X

SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER

X1

TO R

CHECK LED (YELLOW) FAULT DETECTION SWITCH X2

TO C/X

SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER

X1 SWITCHING CHECK DEVICE LED (YELLOW) 24 VAC

L1 (HOT) L2

X2 SWITCH IN SECONDARY OF SEPARATE TRANSFORMER

M13246

70-6627 • 35

AMANA Models: RHA1842A, RHA (24-42)A2A, RHA (48-60)A2A, RHA (36, 48, 60)A3A & A4A, RHD (18-24)A2A, RHD (30-60)A2A, RHE (18-24)A2A, RHE (30-60)A2A, RHA (36, 48, 60)A3B & A4B.

C

C

C

C

C

R

R

R

R

R

R

Y

Y1

Y

Y1

Y1/W1

Y5

94

R1

42

2 A1 41 T8

R

R

R

R

Compressor

Y

Y

Y

Y1 B

B

B

Y1

1st Stg. Heat

W1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Cool

O

O

C/O Valve Heat

B

Em. Heat

E

System Monitor/ System Defrost

L

Multiple Aux. Heat Loads

W3

W3

W3

LED Indication

–

–

X2

Defrost

P

–

2nd Stage Compressor

–

2nd Stage Cool

–

Y

B

B

B

B

B

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

O

O

O

O

O

or H O/B

O

O

or H O/B

O/B

B

B

B

B

B

B

or H O/B

B

B

or H O/B

O/B

E

E

E

E

E

L

J

W1

L

A

F

L

E F

L

E J

L

E F

L

H

E J

L

G

G

G

G

G

G

X1 X2

X1 X2

–

–

–

X1 X2

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

–

–

–

Y2

E

I

H

W3

Not available on all models. Do not remove factory-installed jumper. Terminal must be connected to the transformer common. If separate Y1 and W1 terminals are required, install R8222D1014. See page 12. E Field-installed X2 to X jumper.

J

I

F L terminal is powered continuously when thermostat is in Em. Ht. position. G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. H Configure O/B (select models) in Installer Setup. I When W2 is not used, configure W2 cycle rate to NC. J LED is energized when terminal is powered.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1241 (D99458003) T8611R1083 (D9807605) T874R1194/Q674L1249

70-6627 • 36

D

W1

A

A B C D

or

W PC8 89 90 00 0/ B1 00 2

C

Power

A

T T8 8611 61 G2 1G 00 20 2 28

X

T T8 8011 01 R1 1R 00 10 6 14

X

71

Common C

Existing Terminals or or X X1 C

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 G1 1R 0 0 10 4 00

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

M13172

AMERICAN STABILIS TYPICAL THERMOSTATS AND SUBBASES: HP1, HP1EF, HP10EF, HP15

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

Common E

C

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y1

Y

Y1

Y1 G

1st Stg. Heat

Y1

G

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

X

EM. Heat

E

E

E

Multiple Aux. Heat Loads

–

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

A B C D E

T T8 861 T8 611 1R1 61 G 00 1M 10 0 70 04 08

Y Y5 594G 94 14 G1 19 47 6

42 R1 Y5

94

41 T8

Existing Terminals

A1

71

5

2

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

or

Y

Y

Y1 G

G

Y1/W1

Y1 G

G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

C

H

X1

W1

Y G

D

C

D

or

or

B

B

O

O

A

O/B C

or

D

O/B

A

O/B C

A

E

E

E

E

E

E

W3

–

–

–

–

–

–

–

–

–

–

–

–

–

Confgure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal X (C) must be connected to transformer common.

–

F

X1

X2 –

A

O/B

E

X2

L

A

O/B

L

X1

L

or

L

X2 H

L

A

O/B

B

L

C

– W2

B

F Optional CHECK LED on T8611G,M. Connect X to X1; jumper X2 to C. See Fig. 26 and 27. G Field-installed W1 to Y1 jumper (provided). H Field-installed X2 to X jumper (provided). M13142

70-6627 • 37

ARMSTRONG/AIR-EASE

Chronotherm III T T8 8611 61 R1 1 G 00 10 0 04

T T8 8411 41 R1 1 R 00 10 2 28

T T8 8511 51 G1 1 G 02 10 1 47

T8 T8 011R 011 10 R1 06 014

T8 T8 611G 611 20 G2 02 028

W8 PC89 900 00/ B1 002

X

X

X

C

C

C

C

C

C

R

R

R

R

R

R

Y

Y1

Y

Y1

Y1/W1

Common E

42 R1 94 Y5

41

Existing Terminals or X C

T8

Function

A1

71

2

5

Y Y5 594G 9 4 14 G 1 19 47 6

Electromechanical

Power

R

R

R

R

Compressor

Y

Y

Y

Y1

or

Y1 F

F

F

Y

W1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

Multiple Aux. Heat Loads D

W3

W3

W3

W3

LED Indication

–

–

X2

Defrost

P

–

–

–

P

2nd Stage Compressor

–

–

–

–

–

F

F

F

1st Stg. Heat

A B C D

Electronic Replacement or Upgrade Chronotherm IV

®

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

B

H

X1

B

X2 H

Configure O/B (select models) in Installer Setup. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. E Terminal X or C must be connected to transformer common. F Do not remove factory-installed jumper.

L

C

L

E

X1

X2 K

I

C

or

or

L

E

E

–

A

O/B

B

B

O

O

A

O/B B

A

L

C

or

or

L

A

O/B

O/B

A

O/B B

O/B

L

E

E

E

–

–

–

–

–

–

–

X1 X2

–

–

–

–

–

–

–

–

–

–

W2

G H I J

G

A

A

B

G

When W2 is not used, configure W2 cycle rate to NC. Field-installed X2 to X jumper (provided). Optional CHECK LED on T8611G1004. See Fig. 26. If separate Y1 and W1 terminals are required, install R8222D1014. See page 12. K Available on T8611R1000 only. M13143

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T8611R1182 T841A1597

70-6627 • 38

F

W1

L

W1

F

J

ARCOAIRE/SNYDER GENERAL/COMFORTMAKER AYC, AYD, AYF

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 G2 1G 00 20 2 28

W PC8 89 90 00 0/ B1 00 2

X

X

C

C

C

C

C

C

R

R

R

R

R

R

Y

Y1

Y

Y1

Y1/W1

Y5

94

R1

42

2 T8

41

A1

71

Common C

Existing Terminals or X C or X1

Power

R

R

R

R

Compressor

Y

Y

Y

Y1

Aux. Heat

W1 W2

or

W1

or

Y1 E

E

1st Stg. Heat

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

–

W1

W1

W2

W2

W2

Y

E

E

W1

E

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

L

or

X

L

I

X1

I

E

W1

Fan

System Monitor/ System Defrost

E

K

L

L

L

L

or

or

L

A

O/B

B

B

O

O

A

O/B I

L

L

or

or

L

A

O/B

I

O/B

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads D

–

W3

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2

–

–

–

X1 X2

–

Defrost

P

–

–

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

A B C D

G

X2 G

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal X (C, X1) must be connected to transformer common. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. E Do not remove factory-installed jumper. F Optional CHECK LED on T8611G1004. See Fig. 26. G Field-installed X2 to X jumper (provided).

X1 X2 J

F

A

O/B

A

O/B

B

A

I

B

H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I LED is energized when terminal is powered. J Available on T8611R1000 only. K If separate Y1 and W1 Terminals are required, install R8222D1014. See page 12. L L terminal is powered continuously when thermostat is in Em. Ht. position. M13144

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1142 (1506726) T841A1159 (1505726) T874D1603 T874G1592/Q674F1212 T874G1782/Q674J1175 (1506756) T874G1774/Q674J1175 (1505756) T874R1301/Q674L1181 (1505714) T874R1483/Q674L1538 (1505721) T874R1517/Q674L1538 (1506721) T874R1525/Q674L1181 T874R1574/Q674L1538 T874R1582/Q674L1538 (A02077) T874R1723/Q674L1702 (654958B07) T8611R1067 (1506-744) T8611R1075 (1505-744) T8300A1193/Q6300A

70-6627 • 39

BARD Models: 24UHPQC, 30UHPQC, 42UHPQC, 48UHPQB, 48UHPQB-B, 48UHPQC-B, 60UHPQC-B

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 G2 1G 00 20 2 28

W PC8 89 90 00 0/ B1 00 2

X

X

C

C

C

C

C

C

Rh or R Rc

R

R

R

R

R

R

R

R

R

Y

Y

Y

Y1

Compressor

R1 94 Y5

41 T8

42

2

Power

Existing Terminals C or X or X1

A1

71

Common E

F

1st Stg. Heat

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

B

O

B

or

W1

Y1 F

–

C/O Valve Heat

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 611 R1 G1 000 004

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

or

Y

Y

F

Y1

W1

Y

Y1/W1

Y1

F

F

F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

or

A

O/B

or

B

B

O

O

A

or

or

A

O/B

O/B

A

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads D

W3

W3

W3

W3

C

C

C

C

C

C

LED Indication

–

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

L

I

H

X1

I

X2 H –

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. D Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays.

L

J

X1 X2 – E F G H I J

L

G

J

L

I

L

J

O/B

L

I

A

A

C/O Valve Cool

O/B

B

O/B

L

I

B

Terminal X (C, X1) must be connected to transformer. Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13145

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1129/Q674L1181 T872N1036/Q672F1299 T874R1152/Q674L1207 T872N1164/Q672L1185 T874N1024/Q674F1261

70-6627 • 40

B.D.P. (BRYANT-DAY/NIGHT-PAYNE)

T T 8 8411 41 R1 1R 00 10 2 28

T T 8 8611 61 G2 1G 00 20 2 28

W PC 89 89 00 00 B1 / 00 2

X

X

X

C

C

C

C

C

C

R

R

R

R

R

R

R

R

R

R

W1 or Y

Y1

Y

Y1

Compressor

R1 Y5

94

41 T8

42

2

Power

Existing Terminals

A1

71

Common F

G

1st Stg. Heat

T T 8 8511 51 G1 1G 02 10 1 47 T T 8 8011 01 R1 1R 00 10 6 14

T T 8 8611 61 R1 1G 00 10 0 04

C1 or C X1

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

Y1 or O

O

System Monitor/ System Defrost

L or F

EM. Heat

X or E

Y

Y

Y1 G

G

G

–

or

W1

Y

Y1 G

G

Y1/W1 G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B or O/B

B

B or O/B

O

O

O

O

O

O

O

A

A

C

L

L

L

K

L

M

or

K

L

E

E

J

J

–

E

E

E

E

W3

W3

W3

J

J

J

J

–

–

–

P

–

–

–

–

–

–

–

X1 X2

–

–

–

–

P

LED Indication

X

–

X2 I

2nd Stage Compressor

–

–

–

X1 X2

L

–

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. If provided on original equipment. Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. E Model 545 typical. P terminal provided on T8611R1000 only. F Terminal X (C, X1, C1) must be connected to transformer common. G Do not remove factory-installed jumper.

E

X1 X2 –

H

A

O/B

L

E

Defrost

A

O/B

A

O/B

E

W3

A B C D

M

L

A

O/B

E

Multiple Aux. Heat Loads D

E

M

K

or

L

B

K

– W2

B

H Optional CHECK LED on T8611G1004. See Fig. 26. I Field-installed X2 to X jumper (provided). J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. K LED is energized when terminal is powered. L Optional Check LED activated with completed circuit on X1 and X2 terminals. M L terminal is powered continuously when thermostat is in Em. Ht. position. M13146

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1166/Q672F1125 T874J1010/Q674J1084 (34427DP124/P272-2471/34427DP126,P272-1879) T872G1174/Q672F1125 T874J1010/Q674L1371 (34427DP124/P272-2471/34427DP125,P272-1878) T874G1261/Q674F1253 T874R1004/Q674B1042 T874G1451 (HH641502)/Q674F1212 T874R1335 (HH641501)/Q674L1405

70-6627 • 41

CARRIER TYPICAL 50YQ, QT; 38QF, QN, QB, NPHPO1, 38YRA

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 G2 1G 00 20 2 28

W PC8 89 90 00 0/ B1 00 2

X

X

C

C

C

C

C

C

R

R

R

R

R

R

Y

Y1

Y

Y1

Y1/W1

R1 94 Y5

41

42

2

C

A1

71

Common E

T8

Existing Terminals

Power

R

R

R

R

Compressor

Y

Y

Y

Y1

1st Stg. Heat

W1

–

W1

W1

W2

W2

W2

G

G

G

W1

Fan

or

W2

G

or

Y1

F

F

Aux. Heat

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y

F

F

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

F

or

C

L

L

I

X1

I

F

W1

C/O Valve Heat

System Monitor/ System Defrost

F

F

W1

K

L

L

K

or

or

L

A

O/B

B

B

O

O

A

O/B I

L

K

or

or

L

G A

O/B A

O/B I

O/B

L

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads D

–

W3

W3

W3

–

–

–

–

–

–

LED Indication

–

–

X2 H

X2 H

–

–

–

X1 X2

–

Defrost

P

–

–

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

A B C D

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. If provided on original equipment. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. E Terminal X (C) must be connected to transformer common. F Do not remove factory-installed jumper.

G

J

G H I J K

A

O/B

EM. Heat

X1 X2

70-6627 • 42

A

I

B

Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). LED is energized when terminal is powered. Available on T8611R1000 only. L terminal is powered continuously when thermostat is in Em. Ht. position. M13147

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841C1009 (HH07AT180) T872G1075/Q672J1054 (HH07AT171/HH93AZ173) T872G1075/Q672L1052 (HH07PZ085/HH93AZ075A) T874C1166 (HH07AT160) T874D1272 (HH07AT162) T874G1055/Q674J1035 (HH07AT171/HH93AZ173A) T874G1055/Q674J1118 (HH07AT171/HH93AZ188) T874G1055/Q674L1041 (HH07AT171/HH93AZ175A) T874G1055/Q674L1397 (HH07AT171/HH93AZ185A) T874G1055/Q674P1005 (HH07AT171/HH93AZ169) T874G1071/Q674P1005 (HH07AT171/HH93AZ169)

B

T874G1121 (HH07AT161) T874G1717/Q674J1167 T874H1070/Q674B1406 (HH07AT166/HH93AZ200) T874H1070/Q674C1322 (HH07AT166/HH93AZ199) T874H1088/Q674B1406 (HH07AT166/HH93AZ200) T874H1088/Q674C1322 (HH07AT166/HH93AZ199) T874J1002/Q674L1074 (HH07AT175/HH93AZ186) T874L1000/Q674E1270 (HH07AT176/HH93AZ189) T874L1018/Q674B1356 (HH07AT178/HH93AZ192) T874L1018/Q674C1264 (HH07AT178/HH93AZ193)

T874R1319/Q674B1281 (42QH400083/42QH400103) T874R1384/Q674L1439 (HH07AQ170/HH93AZ187) T874R1384/Q674L1579 (HH07AQ170/HH93AZ198) T874V1008/Q674R1003 (HH07AT177/HH93AZ190) T8085R1007/Q682L1002 (HH07AT075/HH93AZ159C) T8085R1023/Q682L1028 (HH07AT075C/HH93AZ159C) T8141A1147 T8611G1046 (HH07AE001) T8611R1208 (HH07AX114) T8611R1216 (HH07AX115)

CARRIER TYPICAL 38BQ C

Electronic Replacement or Upgrade Chronotherm IV T T8 8611 61 M2 1M 01 20 7 25

W PC8 89 90 00 0/ B1 00 2

Common A

C

X1

C

C

C

C

Power

R

R

R

R

R

R

1st Stage Cool

Y1

Y1

C

C

C

C

1st Stage Heat

W1

W1

C

C

C

C

2nd Stage Heat

W2

W2

W2

Y2

Y2

W2

Fan

G

G

G

G

G

G

C/O Valve Cool C

–

O

O

C/O Valve Heat

–

B

B

O/B

O/B

O/B

Em. Heat

E

E

E

E

E

E

Common 1st Stage Compressor C

–

–

Y

System Monitor/ System Defrost

–

–

L

LED Indication

X

X2

2nd Stage Cool

Y2

Y2

C C

B

B

B

A Terminal must be connected to the transformer common. B For auxiliary heat LED indication, jumper X2 to W2 on Q674. For emergency heat LED indication, jumper X2 to E. C Relay required (R8222B1067 typically) for T8511M, T8611M, PC8900/W8900B1002 application. See page 9 for wiring diagram.

1M 10

08

51

1M 70

T8

61 T8

Function

02

Existing Terminals

T8 Q6 74D 74 116 F1 5/ 02 2

Electromechanical Chronotherm® III

C

C

G

X1 X2 Y2

O/B

Y1

L D

CE

C

H

O/B

Y1

L

CE

C

G

–

X1 X2

Y2

Y2

D

O/B

CE

Y1/W1

L

CF

H

– Y2

D Optional LED indication activated with completed circuit on X1 and X2 terminals. E Configure O/B (select models) in Installer Setup. F Configure Y1/W1 terminal in installer setup. G L terminal is continuously energized in Em. Heat Mode. H LED is energized when terminal is powered. M13148

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874D1074/Q674F1030 (HHO7AT172/HH93AZ174) T874D1074/Q674F1063 (HH07AT172/HH93AZ181)

70-6627 • 43

CARRIER USES HONEYWELL Q674L1116 (HH93AZ171) SUBBASE

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

W PC8 89 90 00 0/ B1 00 2

C

C

C

C

Power

R

R

R

R

R

R

Compressor

Y

Y1

Y

Y1

Y1

Y1/W1

1st Stg. Heat

–

W1

–

–

–

–

2nd Stage Compressor

Y1

W2

W2

Y2

Y2

W2

Fan

G

G

G

G

G

G

C/O Valve Heat

–

B

B

O/B

C/O Valve Cool

O

O

O

O/B

System Monitor/ System Defrost

L

X2

EM. Heat

E

E

E

E

E

E

2nd Stg. Cool

–

Y2 A

Y2 A

–

–

Y2 A

LED Indication

–

–

X1 X2 C

–

X2 C

–

A B C D E

NOT AVAILABLE

E

NOT AVAILABLE

G

L

1M 10 T8

51

1M 70 61 T8

F

02

X1

08

C

Existing Terminals

AV NO AI T LA BL E

Common B

Function

AV NO AI T LA BL E

T8 T8 611M 61 2 1M 01 20 7 25

T Q6 874 74 D11 F1 65 02 / 2H

Electromechanical

G

J

G

L

D

D

I

D

O/B

O/B

L

D

J

O/B

L

D

D

I

F

Jumper Y2 to W2. Terminal C (X1) must be connected to transformer common. Optional CHECK LED on T8611M7008. Connect L to X1, jumper X2 to C. Configure O/B (select models) in Installer Setup. In this application, auxiliary heat and compressor two are both connected to terminal Y1. F For second stage compressor LED indication, jumper X2 to Y2 on Q674. For emergency heat LED indication, jumper X2 to E. For system monitor LED indication, connect L to X2.

G Both first stage heat and cool are connected to Y or Y1/W1 terminal. H When subbase system switch is in AUTO position, equipment operates in cool mode only. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874D1264/Q674L1116 (HH07AT173/HH93AZ171)

70-6627 • 44

O/B

M13149

CARRIER TWO-SPEED COOLING COMPRESSORS

Electromechanical

Electronic Replacement or Upgrade Chronotherm IV

®

W PC8 89 90 00 0/ B1 00 2

C

C

C

Power

R

R

R

R

R

1st Stg. Compressor

Y

Y

Y1

Y1

Y1/W1

2nd Stg. Compressor

Y2

Y2

Y2

Y2

Y2

2nd Stg. Heat Relay

W2

W2

E

E

W2

Fan

G

G

G

G

G

C/O Valve Cool

O

O

O/B

C/O Valve Heat

–

B

O/B

System Monitor/ System Defrost

L

L

EM. Heat

E

E

E

E

E

Multiple Aux. Heat Loads

–

W3

W3

W3

Aux.

51

1M

10

08 70 1M

T8

61 T8

AV NO AI T LA BL

NOT AVAILABLE

AV NO AI T LA BL

NOT AVAILABLE

AV NO AI T LA BL

NOT AVAILABLE

A Terminal C must be connected to transformer common. B Configure O/B in Installer Setup. C LED is energized when terminal is powered.

02

C

Existing Terminals

E

C

Function

E

Common A

E

T8 T8 611M 61 2 1M 01 20 7 25

Chronotherm III

D

L

B

B

C

O/B

O/B

L

B

B

D

B

O/B

B

O/B

L

C

D L terminal is powered continuously when thermostat is in Em. Ht. position. E If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3. M13150

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874S1001/Q674F1501 (HH07AT201/HH93AZ215) T8611T7000 (HH07AX112) T8611T7018 (HH07AX113)

70-6627 • 45

CRISPAIRE/MARVAIR

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

T T8 8611 61 G2 1G 00 20 2 28

W PC8 89 90 00 0/ B1 00 2

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y5

G1 94 Y5

94

63

7 R1

79

30 A1 41 T8

Existing Terminals

Y1

or

Y

Y

Y1

–

–

–

–

Aux. Heat

W2

W2

W2

W2

W2

Fan

G

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

A

L

EM. Heat

E

E

E

E

E

2nd Stage Compressor

–

–

–

–

–

A B C D

F

L

F

L

W1

F

Terminal X or C must be connected to transformer common. When W2 is not used, configure W2 cycle rate to NC. Do not remove factory-installed jumper. To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9.

70-6627 • 46

L

D

G

D

Y

Y1 C

C

C

C

1st Stg. Heat

T T8 8511 51 G1 1G 02 10 1 47 T8 T8 011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

X

Function

3

Common A

8

T T8 8611 61 R1 1G 00 10 0 04

Electromechanical

Y1/W1

C

W1

W1

W1

W1

–

W2

W2

W2

W2

Aux.

G

L

E –

D

G

D

G or

or

L

E –

D

G

D

G

E

O/B

B

B

O

O

E

O/B F

D

L

E –

G

D

or

or

L

E –

D

D

G

E

O/B

O/B

E

E

O/B F

D

O/B

L

E W2

B

E

F

D B

E Configure O/B (select models) in Installer Setup. F LED is energized when terminal is powered. G L terminal is powered continuously when thermostat is in Em. Ht. position. M13151

ECONAR

Electronic Replacement or Upgrade Chronotherm IV T T8 8611 61 G2 1G 00 20 2 28

W PC8 89 90 00 0/ B1 00 2

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y1

Y1/W1

5 Y5

94

R1

42

71 A1 41 T8

Existing Terminals

F

F

1st Stg. Heat

Y1

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

or

Y

Y

Y1 F

F

W1

T T8 8011 01 R1 1R 00 10 6 14

X

Function

T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

Common E

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8411 41 R1 1R 00 10 2 28

Chronotherm® III

Y F

F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

or

A

or

G A

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads D

W3

W3

W3

W3

K

K

K

K

K

K

LED Indication

–

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

A B C D

C

L

G

H

L

X1 X2

J

–

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. If provided on original equipment. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. E Terminal X (C) must be connected to transformer common. F Do not remove factory-installed jumper. G LED is energized when terminal is powered.

L

X1 X2 –

I

L

L

or

O/B

B

B

O

O

A

O/B

L

G

L

L

or

L

B

O/B

A

O/B

A

O/B G

O/B

L

A

G

J B

H Field-installed X2 to X jumper (provided). I Optional CHECK LED on T8611G1004. See Fig. 26. J Optional LED indication activated with completed circuit on X1 and X2 terminals. K If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. L L terminal is powered continuously when thermostat is in Em. Ht. position. M13152

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874G1915/Q674F1212 T874R1921/Q674L1207

70-6627 • 47

ECONAR

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

W PC8 89 90 00 0/ B1 00 2

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

W1

Aux. Heat

W2

Fan

G

NOT AVAILABLE

1st Stg. Heat

10 1R 61 T8

5 42 R1 94 Y5

AV NO AI T LA BL

B

B

B

B

T T8 8511 51 G1 1G 02 10 1 47 T T8 8011 01 R1 1R 00 10 6 14

X

T T8 8411 41 R1 1R 00 10 2 28

X

Existing Terminals

00

X

Function

Y Y5 594G 94 14 G1 19 47 6

Common A

E

T T8 8611 61 G2 1G 00 20 2 28

Electromechanical

B

B

B

W1

W1

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

or

G

or

B

B

System Monitor/ System Defrost

L

L

EM. Heat

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

E

E

E

E

E

E

C/O Valve Cool

O

O

O

O

O

LED Indication

–

X2

X2

–

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

W2

H

X1

B H

A Terminal X (C) must be connected to transformer common. B Remove factory-installed Y1 (Y) to W1 jumper. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D When W2 is not used, configure W2 cycle rate to NC.

L

B I

L

B I

O/B H

L

O

or

B

L

B I

L

G

O/B

O

O

or

D

G G

C/O Valve Heat

B

F

O/B H

O/B

L

G

H

G

O/B

O/B

G

D

E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. F Install R8222D1014 (see page 12) for separate Y1 and W1 terminals. G Configure O/B (select models) in Installer Setup. H LED is energized when terminal is powered. I L terminal is powered continuously when thermostat is in Em. Ht. position. M13153

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874G1915/Q674F1410

70-6627 • 48

ENERSTAT

T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y1

Y1

Y

Y1

Y

Y1

Y/W1

or

HP1

R1 94 Y5

41 T8

42

2 A1

71 1st Stage Compressor

Existing Terminals

B

HP

G

G

1st Stage Heat

–

–

W1

W1

2nd Stage Aux. Heat

–

W2

W2

W2

3rd Stage Aux. Heat

–

–

–

Fan

G

G

G

2nd Stage Comp.

HP2

C/O Valve Heat

B

C/O Valve Cool

Y

G

G

W1

G

W1

W1

–

–

W2

W2

W2

W2

W2

Aux.

–

W3

–

–

–

W3

–

G

G

G

G

G

G

G

Y2

Y2

Y2

J

B

B

B

B

B

B

O

O

O

O

O

O

O

System Monitor/ System Defrost

–

–

L

X1

L

L

EM. Heat

–

E

E

E

E

Multiple Aux. Heat Loads D

–

W3

W3

W3

Remote Sensor

–

–

–

–

LED Indication

–

–

X2

A B C D

X2 H

Configure O/B (select models) in Installer Setup. Both first stage heat and cool are connected to HP terminal. If provided on original equipment. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. E Terminal X (C) must be connected to transformer common.

or

A

O

O/B

O/B

L

L

L

L

E

E

E

E

E

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

X1 X2

–

X1 X2 F G H I J

F

A

O/B

I

A

O/B

or

O/B

A

B

C

H

G

W1

C

C

or

Y1

W PC8 89 90 00 0/ B1 00 2

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 6 T8 11R 61 100 T8 1G 0 61 10 1M 04 70 08

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8611 61 M2 1M 01 20 7 25

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

O/B A

A

Optional CHECK LED on T8611G,M. See Fig. 26 and 27. Do not remove factory-installed jumper. Field-installed X2 to X jumper (provided). When W2 is not used, configure W2 cycle rate to NC. T8611M7008 Model.

M13173

70-6627 • 49

EVCON/COLEMAN MODELS: 3200, 3300 A

Common B

(2)

Power

T T8 8011 01 R1 1R 00 A 101 6 4

Electronic Replacement or Upgrade T T8 8411 41 R1 1R 00 A 102 2 8

1 61 T8

Existing Terminals

Function

R A 100

0

Chronotherm® III

BLCK

C

C

C

RED

R

R

R

W

W1

(1) 1st Stg. Heat Compressor

(5)

W1 C

C

Y

Y1

Y1

Y1

Aux. Heat

(4) W2

W2

W2

W2

Fan

G

G

G

G

B

O

O

O

–

B

B

B

L

L

L

E

E

E

–

–

–

C/O Valve Cool

(6)

(5)

C/O Valve Heat System Monitor/ System Defrost A EM. Heat A LED Indication

(3)

E

(10) A (3)

X

A

A

A R8222B1067 relays required to operate system. Equipment requires normally energized emergency heat. See page 10 for wiring diagram. B Terminal must be connected to the transformer common.

70-6627 • 50

W1 C

C Remove factory-installed jumper on Model 3200. Do not remove factoryinstalled jumper on Model 3300. M13203

EVCON/COLEMAN MODELS: 3200, 3300, 3360, 3400, 6000, 6500 AD

X

C

C

C

C

C

C

RED (1)

R

R

R

R

R

R

R

R

R

Y

Y

Y1

Compressor

Y

42 R1 94 Y5

A1 41 T8

Existing Terminals

G

G

(6)

Y1

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

–

B

C/O Valve Cool

V

System Monitor/ System Defrost

–

Em. Heat D

A

Multiple Aux. Heat Loads F LED Indication

or

Y

Y

G

Y1 G

W1

Y G

W PC8 89 90 00 0/ B1 00 2

X

2

Power

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71

Common E

T T8 8511 51 G1 1G 02 10 1 47 T8 T8 011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

BLCK (2)

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1

Y1 G

G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

O

–

L

–

L

L

L

L

L

L

E

E

E

E

E

E

E

E

E

–

W3

W3

W3

–

–

–

–

–

–

X

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

Y2

–

–

Y2

–

–

–

–

–

Y2

I

(4)

(5)

(3)

D

H

X1

X2

C

X1

A See Coleman wholesaler to obtain replacements for these thermostats. If not possible, basic functions can be provided as shown. B Configure O/B (select models) in Installer Setup. C Optional LED indication activated with completed circuit on X1 and X2 terminals. D R8222B1067 relays required to operate system. Equipment requires normally energized emergency heat. See page 10 for wiring diagram.

X2

C

or

or

B

O/B

B

B

O

O

B

O/B

or

or

B

O/B

B

O/B

B

O/B

B

O/B

C I

E Terminal must be connected to the transformer common. F Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. G Do not remove factory-installed jumper. H Field-installed X2 to X (C) jumper. I When W2 is not used, configure W2 cycle rate to NC. M13204

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8300A1029/Q6300A1029 (3300-382/3300-383)

70-6627 • 51

EVCON/COLEMAN TYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) DIRECT REPLACEMENTS

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y5

T8

94

G1 6

7 94

R1

79

8 30 A1 41

Y5

Y1

or

Y

Y

C

1st Stage Heat

–

–

–

–

Auxiliary Heat

W2

W2

W2

W2

W2

Fan

G

G

G

G

G

C/O Valve Heat

B

B

B

W1

B

O

O

System Monitor/ System Defrost

L

L

Em. Heat

E

E

E

E

E

2nd Stage Compressor

–

–

–

–

–

A B C D

O F

L

O F

L

D

B

C/O Valve Cool

Terminal X (C) must be connected to transformer common. When W2 is not used, configure W2 cycle rate to NC. Do not remove factory-installed jumper. To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9.

L

D

Y1

W1

W1

–

W2

W2

W2

W2

Aux.

G

D

L

E –

G B

O G

D

or

or

L

E –

D

G

D

G

E

O/B

B

B

E

O/B F

D

O

L

E –

O G

D

or

or

L

E –

D

O/B

E

O/B

E

O/B F

D

D

G

E

B

E

O/B

L

E W2

F

D B

E Configure O/B (select models) in Installer Setup. F LED is energized when terminal is powered. G L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1501 (3600-375)/Q674F1378 T874G1576 (3600-373)/Q674F1402 T874R1368 (3600-368)/Q674L1421

70-6627 • 52

Y1/W1 C

C

W1

O G

Y C

W1

B

O F

Y1 C

W PC8 89 90 00 0/ B1 00 2

X

T T8 8611 61 G2 1G 00 20 2 28

X

Existing Terminals

T T8 8511 51 G1 1G 02 10 1 47 T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

Common A

Function

33

T T8 8611 61 R1 1G 00 10 0 04

Electromechanical

M13157

EVCON/COLEMAN TYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) ALTERNATIVE REPLACEMENTS

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

X

C

C

C

C

C

C

R

R

R

R

R

R

Y5

94

R1

42

2 A1 41 T8

Power

R

R

R

R

Compressor

Y

Y

Y

Y1 E

E

or

Y1

Y

Y

E

Y1

Y E

E

Y1 E

W PC8 89 90 00 0/ B1 00 2

X

71

Common D

Existing Terminals or C/X X

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 E

1st Stage Heat

W1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

Defrost

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2

–

–

–

X1 X2

–

EM. Heat

P

–

–

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

K K

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

B

B

B

O

O

O

O

L

B

G

X1

W1

B

X2 G

A Configure O/B (select models) in Installer Setup. B LED is energized when terminal is powered. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal X (C) must be connected to transformer common. E Do not remove factory-installed jumper. F Optional CHECK LED on T8611G1004. See Fig. 26.

L

I

X1 X2 F J

L

O I

or

L

A

O/B B

O

L

O I

or

L

A

O/B B

L

A

O/B

L

B

L

G Field-installed X2 to X jumper (provided). H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I L terminal is powered continuously when thermostat is in Em. Ht. position. J Defrost is available on T8611R1000 only. K Models 3700, 3900 and 6500 require connection of O and B terminals. L When W2 is not used, configure W2 cycle rate to NC. M13174

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8611R1059 (3600A-381)

70-6627 • 53

FEDDERS

Common A

C

Power Rc Rh Compressor

Y1

or

or

R

W1

Auxiliary Heat

W2

Fan

G

C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost

L

C

A

A

C

C

A

A

C

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

00 10 1R 61 A

A

X

X

C

R

R

R

R

R

R

R

R

C

Y

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

D

Y

B

1st Stage Heat

T8

Y Y5 594G 94 14 G1 19 47 6

5 42 R1 94 Y5

Existing Terminals

AV NO AI T LA BL E

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

B

B

B

B

B

B

W1

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

–

B

B

B

B

B

–

O

O

O

O

O

or

NOT AVAILABLE

W1

Z

L

H

X1

H

L

I

L

I

or

or

L

F

O/B

B

B

O

O

F

O/B H

L

I

or

or

L

F

O/B

F

O/B

F

O/B H

F

O/B

L

Em. Heat

K

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

–

–

–

–

–

–

LED Indication

–

X2 E

X2

–

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

W2

E

A Terminal X (C) must be connected to transformer common. B Remove factory-installed Y1 (Y) to W1 jumper. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or relays. D Install R8222D1014 (see page 12) if separateY1 and W1 terminals are required.

E F G H I

H

G

Field-installed X2 to X (C) jumper. Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872C/Q672L1102 T874D1462/Q674E1205 (THTX-220-AOHB; 88-58-00550-001) T874C/Q674L1090 T874R1269/Q674L1066 (THTX-120-HEHB; 88-58-00540-001) T874D1249 T874R1343/Q674L1413 (THTX-120-HEHC; 88-58-00560-001)

70-6627 • 54

G

M13158

FLORIDA HEAT PUMP TYPICAL “LT” UNITS

Y Y5 594G 94 14 G1 19 47 6

T T8 8611 61 R1 1G 00 10 0 04

T T8 8411 41 R1 1R 00 10 2 28

T T8 8511 51 G1 1G 02 10 1 47

C

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y1

Y1/W1

Existing Terminals

F

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W

W2

W2

W2

Fan

G

G

G

G

C/O Valve Heat C/O Valve Cool

–

W

or

O

or

Y1

Y

Y

F

Y1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

B

B

B

O

O

O

O

O

O

EM. Heat

–

E

Multiple Aux. Heat Loads C

–

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

L D

E

B

D

X1

E

B

D

W3 H

X2 H –

A Configure O/B (select models) in Installer Setup. B LED is energized when terminal is powered. C Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. D E-W2 jumper required unless emergency heat function is wired separately. E Terminal X (C) must be connected to transformer common.

F

W1

B

X

F

W1

B

System Monitor/ System Defrost

Y F

F

W PC8 89 90 00 0/ B1 00 2

Y5 94 R1 42 5

Common E

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 41 A1 71 2

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

L

E

I

L

D

–

X1 X2 G –

F G H I J

E

I

D

or

or

L

A

O/B

B

B

O

O

A

O/B B

L

D

I

D

or

or

L

E

J

G A

O/B

A

O/B

A

O/B B

D

A

O/B

L

E

E

E

–

–

–

–

–

–

–

–

X1 X2

–

–

–

–

–

W2

B

D

J

Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). L terminal is powered continuously when thermostat is in Em. Ht. position. When W2 is not used, configure W2 cycle rate to NC. M13175

70-6627 • 55

FRIEDRICH

T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

Existing Terminals

F

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

or

Y1

Y

Y

Y1

W1

Y

Y1 F

F

F

F

W PC8 89 90 00 0/ B1 00 2

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

or

A

or

G A

A

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

D

D

D

D

D

D

LED Indication

–

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

L

B

H

X1

B

X2 H –

A Configure O/B (select models) in Installer Setup. B LED is energized when terminal is powered. C Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900) terminal.

L

I

L

X1 X2 G – E F G H I J

I

or

O/B

B

B

O

O

A

O/B

L

B

L

I

or

L

O/B

O/B

A

O/B B

A

O/B

L

B

J

Terminal X (C) must be connected to transformer common. Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). L terminal is powered continuously when thermostat is in Em. Ht. position. When W2 is not used, configure W2 cycle rate to NC. M13179

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1324 (AT12124)

70-6627 • 56

J

GENERAL ELECTRIC

C

C

C

C

C

C

R

R

R

R

R

R

61 G1 1 Y5

Y5

94

94

R1

76

5 A1 41 T8

Power

R

R

R

R

Compressor

Y

Y

Y

Y1

or

Y1

Y

Y

C

1st Stage Heat

–

Aux. Heat W1

or

W

–

–

–

W

W

W

Y1 C

W1

Y C

Y1 C

W PC8 89 90 00 0/ B1 00 2

B

T T8 8611 61 G2 1G 00 20 2 28

T T8 8511 51 G1 1G 02 10 1 47

B

55

Common A

Existing Terminals or C B

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

B

3

T8 T8 611 61 R1 1G 00 10 0 04

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 C

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

Fan

G

G

G

G

G

G

C/O Valve Heat

–

–

–

–

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

F

F

EM. Heat

B

–

–

–

–

–

–

–

–

–

Outdoor Sensor

T

T

T

T

B

B

B

B

B

B

X2

X2

X2

E

E

E

E

E

E

–

–

–

X1 X2

–

–

–

–

–

W2

Outdoor Thermostat

W2

or

X2

G

F

G

F

LED Indication

–

–

–

–

2nd Stage Compressor

–

–

–

–

G

L

X1 X2 D

A Terminal X (C) must be connected to transformer common. B Tape off. Electric thermostat replaces outdoor reset with improved zero droop performance. C Do not remove factory-installed jumper. D Optional CHECK LED on T8611G1004. See Fig. 26. E Configure O/B (select models) in Installer Setup.

3AAT86B1A1 3AAT83F1B2

H

–

L

H

or

or

E

O/B

B

B

O

O

E

O/B

L

G

L

H

or

E

O/B

or

L

E

O/B

E

O/B G

I

E

O/B

L

G

F

I

F Optional LED indication activated with completed circuit on X1 and X2 terminals. G LED is energized when terminal is powered. H L terminal is powered continuously when thermostat is in Em. Ht. position. I When W2 is not used, configure W2 cycle rate to NC. M13180

TYPICAL THERMOSTATS AND SUBBASES — CUSTOMER PART NUMBER 3AAT80A1A1 3AAT80B1A1 3AAT83E12A1

70-6627 • 57

GENERAL ELECTRIC

C

C

C

C

C

C

R

R

R

R

R

R

Y5

94

R1

42

2 A1 41 T8

Power

R

R

R

R

Compressor

Y

Y

Y1

Y1 E

E

1st Stage Heat

–

Aux. Heat W1

or

W

–

W1

W1

W2

W2

W2

or

Y1

Y

Y

E

Y1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

or

L

L

K

X1

K

Y1/W1 E

W1

G

F

Y1 E

W1

Fan

System Monitor/ System Defrost

Y E

E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71

Common B

Existing Terminals or C B

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

L

L

L

L

or

I

O/B

or

L

B

B

O

O

I

O/B K

L

L

or

or

L

I

O/B

I

O/B

I

O/B K

I

O/B

L

EM. Heat

–

–

–

–

–

–

–

–

–

–

Outdoor Sensor

T

A

A

A

C

C

C

C

C

C

E

E

E

E

E

E

E

E

E

Outdoor Thermostat

E

or

X2

Defrost Control

–

–

–

–

P

–

–

–

–

–

Multiple Aux. Heat Loads D

W2

W3

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2 G

X2 G

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

X1 X2 F

–

A Tape off. Outdoor reset not provided with TRADELINE® replacement thermostats. B Terminal X (C) must be connected to transformer common. C Tape off. Electronic thermostat replaces outdoor reset with improved zero droop performance. D Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. E Do not remove factory-installed jumper.

–

J

K

J

F Optional CHECK LED on T8611G1004. See Fig. 26. G Field-installed X2 to X jumper (provided). H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I Configure O/B (select models) in Installer Setup. J When W2 is not used, configure W2 cycle rate to NC. K LED is energized when terminal is powered. L L terminal is powered continuously when thermostat is in Em. Ht. position. M13181

70-6627 • 58

GEO SYSTEM

T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

Existing Terminals

E

or

Y1 E

Y

Y

E

Y1

Y E

E

Y1 E

W PC8 89 90 00 0/ B1 00 2

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 E

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

J

G

X1

W1

J

X2 G –

A Configure O/B (select models) in Installer Setup. B Terminal X (C) must be connected to transformer common. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E Do not remove factory-installed jumper. F Optional CHECK LED on T8611G1004. See Fig. 26.

L

I

X1 X2 F –

L

I

or

or

A

O/B

B

B

O

O

A

O/B

L

J

L

I

or

or

L

A

O/B

A

O/B

A

O/B J

K

A

O/B

L

J

K

G Field-installed X2 to X jumper (provided). H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I L terminal is powered continuously when thermostat is in Em. Ht. position. J LED is energized when terminal is powered. K When W2 is not used, configure W2 cycle rate to NC. M13182

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T841A1118

70-6627 • 59

HEAT CONTROLLER/COMFORT AIR

Electronic Replacement or Upgrade Chronotherm IV

®

Chronotherm III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

B

R1 94 Y5

41 T8

42

2

W1

A1

71

Compressor

F

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

–

B

C/O Valve Cool

Y1

O

System Monitor

X

EM. Heat

E

Multiple Aux. Heat Loads C

Y

Y

F

Y1 F

W1

Y

Y1 F

F

Y1/W1 F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L D

or

Y1

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

C

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

I

L

J

L

J

or

or

L

A

O/B

B

B

O

O

A

O/B I

L

J

or

or

L

A

O/B

A

O/B

A

O/B I

A

O/B

L

E

E

E

E

E

E

E

E

E

–

W3

W3

W3

–

–

–

–

–

–

LED Indication

–

–

X2

X1 X2

–

–

–

X1 X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

H

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D If provided on original equipment. E Terminal X (C) must be connected to transformer common.

X1 X2

H

H

G

I

– G

F Do not remove factory-installed jumper. G When W2 is not used, configure W2 cycle rate to NC. H Optional LED indication activated with completed circuit on X1 and X2 terminals. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13217

TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBER T874G1469/Q674F1345

70-6627 • 60

HEATWAVE/SOUTHWEST MFG.

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 T8

41

A1

71 B

E

E

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

–

B

C/O Valve Cool

O

System Monitor

or

Y1

Y

Y

E

Y1

W1

Y E

E

Y1 E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Y1/W1 E

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

O

–

–

L

–

L

L

L

L

L

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

–

–

–

–

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

–

or

A

O/B

B

B

O

O

A

O/B

or

or

F

F

LED Indication

or

A

O/B

A

O/B

A

O/B

A

O/B

F

Defrost

B

–

–

–

–

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D Terminal X (C) must be connected to transformer common.

G

G

E Do not remove factory-installed jumper. F Optional LED indication activated with completed circuit on X1 and X2 terminals. G When W2 is not used, configure W2 cycle rate to NC. M13218

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1232/Q672F1224 T874G1105/Q674F1097 T874G1105/Q674F1170

70-6627 • 61

HONEYWELL UNIVERSAL

Electronic Replacement or Upgrade Chronotherm IV

®

Chronotherm III

X

X

C

C

C

C

C

C

Power B

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

Y

R1 94 Y5

41 T8

42

2

or

Y1

A1

71

Compressor

F

1st Stage Heat Aux. Heat

W1

W

or

F

F

W2

–

W1

W1

W2

W2

W2

or

Y1

Y

Y

F

Y1 F

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat I

B

B

B

B

B

B

B

C/O Valve Cool I

O

O

O

O

O

O

O

X1

or

L

L

J

Y1/W1 F

W1

G

or

Y1 F

W1

Fan

System L1 Monitor

Y F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

L

K

L

K

or

or

A

O/B

B

B

O

O

A

O/B

L

J

L

K

or

or

L

A

O/B

A

O/B

A

O/B J

A

O/B

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

E –

E

E

E

E

E

LED Indication

X2

–

X2

X1 X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

H

A Configure O/B (select models) in Installer Setup. B For best performance, use a NEMA standard transformer. C Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. D Terminal X (C) must be connected to transformer common. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. F Do not remove factory-installed jumper.

X1 X2 G

70-6627 • 62

T872R1008/Q672B1046 T872R1057/Q672L1037 T874G1113/Q674L1041 T874G1139/Q674A T874G1212/Q674F1238 T874G1246/Q674F1212 T874G1246/Q674F1410

J

H

L

G Optional CHECK LED. See Fig. 26. H Optional LED indication activated with completed circuit on X1 and X2 terminals. I Thermostat will have connection to either O or B terminal, not both. J LED is energized when terminal is powered. K L terminal is powered continuously when thermostat is in Em. Ht. position. L When W2 is not used, configure W2 cycle rate to NC. M13186

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T841A1084 T841A1282 T841A1290 T841A1340 T841A1563 T872G1000/Q672F1018 T872G1224/Q672F1208

L

T874G1444/Q674J1027 T874G1626/Q674F1436 T874R1004/Q674B1042 T874R1004/Q674B1109 T874R1061/Q674L1082 T874R1152/Q674L1207 T874R1285/Q674L1157

T874R1350/Q674L1181 T874R1376/Q674L1207 T874R1392/Q674L1447 T874R1475/Q674L1520 T874R1491/Q674L1553

HONEYWELL SEPARATE FIRST STAGE HEAT AND COOL TERMINALS

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

1st Stage Cool

Y1

Y1

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

1st Stage Heat

W1

2nd Stage Heat

W2

Fan

G

C/O Valve Heat

B

C/O Valve Cool

O

System Monitor

X2

EM. Heat

Z

or

or

NOT AVAILABLE B

B

L

B

10 1R 61 G

G

W1

W1

W1

W1

W1

W1

W2

W2

W2

W2

W2

W2

W2

G

G

G

G

G

G

G

or

E

B

B

O

O

or

Aux.

E

B

B

B

B

O

O

O

O

O

L

L

L

L

L

L

E

O/B

or

O/B

O/B

E

O/B

E

O/B

E

E

E

E

E

E

E

E

–

–

P

–

–

–

–

–

–

–

–

–

–

–

–

Y2

Defrost

–

2nd Stage Cool

Y2

Multiple Aux. Heat Loads F

–

W3

W3

–

–

–

–

–

–

LED Indication

–

X2

X1 X2

–

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

Y2

A B C D E

B

Terminal X (C) must be connected to transformer common. If provided on original equipment. When W2 is not used, configure W2 cycle rate to NC. If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. Select O/B (select models) in Installer Setup.

C

G E

B

or

O/B

D

G

G

G

G

W1

X1

E

T8

42 R1 94 Y5 G

W PC8 89 90 00 0/ B1 00 2

C

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

X

00

X

Y Y5 594G 94 14 G1 19 47 6

X

Existing Terminals

5

Common A

Function

AV NO AI T LA BL E

T T8 8411 41 R1 1R 00 10 2 28

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

C

F Terminal is for multiple second stage heat loads such as contactors, sequencers, or relays. G Remove factory-installed jumper for independent first stage heat and cool operation. M13187

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872A-D/Q672F1000 T872A-D/Q672F1026

T872A-D/Q672F1042 T872C/Q672F1075

T874A-D/Q674F1006 T874A-D/Q674F1022

T874A-D/Q674F1048 T874A-D/Q674F1089

T874R1616/Q674L1587 T8085A/Q682B1029

T8300A/Q6300A T8300B/Q6300B

70-6627 • 63

HONEYWELL RETAIL HEAT PUMP THERMOSTATS

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power B

R

R

R

R

R

R

R

R

R

R

Y1

Y

Y

Y1

Y

Y1

Y

Y1

Y1/W1

5 42 R1 94 Y5

T8

41

A1

71 Compressor

F

F

F

Y1

or

Y

F

F

F

F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

F

1st Stage Heat

W1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

LED Indication

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

G

W1

L

A Configure O/B (select models) in Installer Setup. B For best performance, use a NEMA standard transformer. C If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. D Terminal X (C) must be connected to transformer common.

H

E F G H

L

H

or

or

L

A

O/B

G

B

O

O

L

H

or

or

L

A

O/B

A

O/B

A

O/B G

E

A

O/B

L

G

E

When W2 is not used, configure W2 cycle rate to NC. Do not remove factory-installed jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER CT70A1001 CT8611R1006

70-6627 • 64

B

A

O/B

C

M13188

HONEYWELL MODELS USING OUTDOOR RESET

Chronotherm III

B

B

B

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

61 G1 1 Y5

Y5

94

94

R1

76

5 55 A1 41 T8

Existing Terminals

Y1

or

Y

Y

D

1st Stage Heat

–

–

–

–

Aux. Heat

W

W

W

W

Fan

G

G

G

Outdoor Thermistor

T

T

Outdoor Thermostat

X2

Cooling Changeover

Y1 D

Y1

Y1/W1 D

D

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

T

T

E

E

E

E

E

E

X2

X2

X2

E

E

E

E

E

E

O

O

O

O

O

O

System Monitor

F

F

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A B C D

G

F

G

For best performance, use a NEMA standard transformer. Terminal B (C) must be connected to transformer common. Configure O/B (select models) in Installer Setup. Leave factory-installed jumper in place.

F

W1

Y D

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

B

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

Common AB

3

T T8 8611 61 G1 1R 00 10 4 00

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

®

G

L

H

E F G H

L

O H

or

L

C

O/B G

O

L

O H

or

L

C

O/B G

F

C

O/B

L

G

F

No connection. Tape off. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13189

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1566/Q674L1538 T841A1068 T874R1053/Q674L1140

70-6627 • 65

HONEYWELL HEATING CHANGEOVER

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

Y1

or

Y

or

R1 94 Y5

41 T8 C

42

2 A1

71 Compressor

Existing Terminals

D

D

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

W1

B

C/O Valve Cool

–

O

System Monitor

L

Em. Heat

E

or

or

Y

Y

D

Y1

W1

Y D

D

Y1 D

Y1/W1 D

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

K

Y1

W PC8 89 90 00 0/ B1 00 2

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

J

L

K

L

K

or

or

L

1

O/B

B

B

O

O

1

O/B J

L

K

or

or

L

1

O/B

1

O/B

1

O/B J

1

O/B

L

E

E

E

E

E

E

E

E

E

W3

F

F

F

F

F

F

–

–

–

X1 X2

–

Multiple Aux. Heat Loads C

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

H

X1 X2

I

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple second stage heating loads such as contactors, sequencers, or relays. D Leave factory-installed jumper in place. E Terminal X (C) must be connected to transformer common. F If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

X1 X2

G

J

I

B

G Optional CHECK LED on T8611G1004. See Fig. 26. H Field-installed X2 to X jumper (provided). I Optional LED indication activated with completed circuit on X1 and X2 terminals. J LED is energized when terminal is powered. K L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872N1002/Q672F1133 T872N1028/Q672F1216 T874N1016/Q674F1220 T874N1040/Q674F1261

70-6627 • 66

B

M13190

HONEYWELL UNIVERSAL THERMOSTATS

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

04 61 T8

61 T8

T8

1G 10

58 1R

10 1R 61

30 Q6

11

00

10 0A

10

02 10 0A 30 Q6

Function

T T8 8011 01 R1 1R 00 10 6 14

Electronic Replacement or Upgrade Chronotherm IV

Existing Control Terminal Designation

Common B

X

X

C

B

C

C

C

C

Power

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y1

Y1

Y

Y

Y1

A

A

A

Y1/W1 A

A

1st Stage Heat

–

W1

W1

W1

–

W1

W1

–

Auxiliary Heat

W2

W2

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

C/O Valve Heat

B

B

B

H

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ Sytem Defrost

L

L

L

Em. Heat

E

E

E

E

E

E

E

E

Multiple Heat Loads

–

–

E

E

E

E

E

E

LED Indication

–

–

–

–

X1 X2

–

X1 X2

Defrost

P

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

W2

2nd Stage Cool I

–

–

–

–

–

–

–

Y2

H

L

A Remove factory-installed jumper for independent first stage heat and cool operation. B Terminal must be connected to the transformer common. C Configure O/B (select models) in Installer Setup. D Optional LED indication activated with completed circuit on X1 and X2 terminals.

H

L

H

L

D

H

or

or

O/B

C

O/B

L

O/B

C

O/B

G

L

D

F

C

C

G

–

F

E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. F When W2 is not used, configure W2 cycle rate to NC. G LED is energized when terminal is powered. H L terminal is powered continuously when thermostat is in Em. Ht. position. I If Y2 is used, T8611M may be used as replacement. M13244

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1491/Q674L1553 T874G1600/Q674F1428 T8085R1015/Q682L1010 T8300A1003/Q6300A1010 T8300A1011/Q6300A1002 T8300A1045/Q6300A1002 T8300A1029/Q6300A1036 T8300A1037/Q6300A1044 T8300B1001/Q6300B1000 T8611R1000 T8611G1004

70-6627 • 67

INTERCITY PRODUCTS/HEIL QUAKER/WHIRLPOOL/TEMPSTAR

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

00 10 1R 61 T8

Y Y5 594G 94 14 G1 19 47 6

5 42 R1 94 Y5

Existing Terminals

AV NO AI T LA BL E

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Common A

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

F B

1st Stage Heat

W1

Auxiliary Heat

W2

Fan

G

C/O Valve Heat

B

B

B

B

B

B

W1

W1

W1

W1

W1

W1

W2

W2

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

System Monitor/ System Defrost

L

L

Em. Heat

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

E

E

E

E

E

E

LED Indication

–

X2

X1 X2

–

–

–

–

X1 X2

–

Defrost

P

–

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

W2

NOT AVAILABLE

W1

H

I

L

A Terminal X (C) must be connected to transformer common. B Remove factory-installed Y1 (Y) to W1 jumper. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or relays. D Configure O/B (select models) in Installer Setup. E If multiple auxiliary heat loads are used, connect to W2 (W8900B) terminal.

L

I

or

or

D

O/B

B

B

O

O

D

O/B

L

H

L

or

or

I

D

O/B

D

O/B

L

H

D

O/B

L

H

G

F If separate Y1 and W1 terminals are required, install R8222D1014. See page 12. G When W2 is not used, configure W2 cycle rate to NC. H LED is energized when terminal is powered. I L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8611R1190 (HQ1149375HW) T874R1947/Q674L1819 (HQ1149406HW/HQ1149407HW)

70-6627 • 68

D

O/B

G

M13159

INTERCITY PRODUCTS/HEIL QUAKER/WHIRLPOOL/TEMPSTAR

X

C

C

C

C

C

C

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

5 42 R1 Y5

94

A1 41 T8

B

F

1st Stage Heat Aux. Heat

–

W2

or

W

F

–

W1

W1

W2

W2

W2

or

Y1

Y

Y

F

Y1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

EM. Heat

X

or

or

X1

L

E

W3

Multiple Aux. Heat Loads C

LED Indication

L

I

Y1/W1 F

W1

G

X

Y1 F

W1

Fan

System Monitor

Y

F

F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

Power

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71

Common E

Existing Terminals or C B

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

X

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

L

D

L

D

or

or

L

A

O/B

B

B

O

O

A

O/B I

L

D

or

or

L

A

O/B

A

O/B

A

O/B

A

O/B

I

L

E

E

E

E

E

E

E

E

E

W3

W3

W3

–

–

–

–

–

–

–

X2

X1 X2

–

–

–

X1 X2

–

X2

G

X1 X2

G

I

G

Defrost

P

–

–

–

P

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D L terminal is powered continuously when thermostat is in Em. Ht. position. E Terminal X (C) must be connected to transformer common.

H

H

F Do not remove factory-installed jumper. G Optional LED indication activated with completed circuit on X1 and X2 terminals. H When W2 is not used, configure W2 cycle rate to NC. I LED is energized when terminal is powered. M13185

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1134 (HQ1147021HW) T841A1175 (HQ1147004HW) T841A1589 (HQ1149480HW) T872R1172/Q672L1193 T874G1246/Q674F1212 T874R1137/Q674L1132 (HQ711597HW/711598)

T874R1673/Q674L1132 (HAXB004TW01/711598) T874R1749/Q674F1329 (TAXB004TW01/712005) T874R1749/Q674L1132 (TAXB004TW01/711598) T874R1731/Q674L1132 (HQ1147909HW/711598) T8141A1022 T8141A1030

T8141A1048 T8141A1055 T8141A1139 T8300A1136/Q6300A1119 (HQ713669HW) T8611G1020 (HQ713669HW)

70-6627 • 69

INTERTHERM/MILLER/NORDYNE

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y

Y1

Y1/W1

3 63 Y5

Y5

94

94

G1

R1

79

8 30 A1 41 T8

Existing Terminals

Y1

or

Y

Y

E

1st Stage Heat

–

–

–

–

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

C/O Valve Heat

W1

B

B

W1

W2 H

B

G

H

O

System Monitor

Z

L

Em. Heat

K

E

E

E

E

LED Indication

–

–

–

–

X1 X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

A B C D E

C

L

O C

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. Terminal X (C) must be connected to transformer common. Do not remove factory-installed jumper.

70-6627 • 70

L

O C

L

W1

W1

–

W2

W2

W2

W2

Aux.

H

L

G B

O G

E

E

W1

B

–

E

W1

G

B

C/O Valve Cool

O

Y1 E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

Common D

7

T8 T8 611R 61 10 1G 00 10 04

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

O G

or

or

L

H

H

G

G

1

O/B

B

B

1

O/B C

O

L

O G

or

or

L

H

H

G

1

O/B

1

O/B

1

O/B C

1

O/B

L

E

E

E

E

E

–

–

–

X1 X2

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

F

B

C

B

F Optional LED indication activated with completed circuit on X1 and X2 terminals. G L terminal is powered continuously when thermostat is in Em. Ht. position. H To eliminate auto fan in emergency heat mode, add switching relay as shown on page 9. M13191

INTERTHERM/MILLER/NORDYNE

C

C

C

C

C

R

R

R

R

R

R

Y5

94

R1

42

2 A1 41 T8

R

R

R

R

Compressor

Y

Y

Y

Y1 E

Y1

or

Y

Y

E

E

Y1

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor

L

Em. Heat

E

E

E

Multiple Aux. Heat Loads D

W3

W3

W3

–

X2

X2

or

L

X1

W1

W2 I

G

Y1 E

Y1/W1 E

W1

W1

W1

W1

–

W2

W2

W2

W2

Aux.

G

J

K

G

I

Y E

E

W PC8 89 90 00 0/ B1 00 2

C

Power

LED Indication

T T8 8611 61 G2 1G 00 20 2 28

X

T T8 8011 01 R1 1R 00 10 6 14

X

71 Common C

Existing Terminals or X C

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

I

J

G or

or

G

I

G

1

O/B

B

B

O

O

1

O/B K

J

or

1

O/B

1

O/B K

1

O/B

E

E

E

E

E

E

E

W3

H

H

H

H

H

H

–

–

–

X1 X2

–

X1 X2

F

L

1

O/B

I

G

L

I

L

or

I

L

X1 X2

L

I

L

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal X (C) must be connected to transformer common. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. E Do not remove factory-installed jumper. F Optional CHECK LED on T8611G1004. See Fig. 26.

K

I

2nd Stage Compressor

A B C D

B

B

G Field-installed X2 to X jumper provided. H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I Optional LED indication activated with completed circuit on X1 and X2 terminals. J L terminal is powered continuously when thermostat is in Em. Ht. position. K LED is energized when terminal is powered. M13192

70-6627 • 71

INTERTHERM/MILLER/NORDYNE

Power Compressor

B

B

B

B

C

C

C

C

C

C

R

R

R

R

R

R

R

R

R

R

Y

Y

Y

Y1

or

Y1

Y

Y

D

Y1 D

Y D

Y1

–

–

–

–

Auxiliary Heat

W2

W

W

W

Fan

G

G

Outdoor Thermistor

T

T

T

T

E

E

E

E

E

Em. Heat F

K

X2

X2

X2

E

E

E

E

E

C/O Valve Cool

W1

O

System Monitor/ System Defrost

Z

F

F

G

F

O H

F

G

W1

W2 F

O H

F

F

O H

For best performance, use a NEMA rated transformer. Terminal B (C, X) must be connected to transformer common. Configure O/B (select models) in Installer Setup. Leave factory-installed jumper W1-Y1 (Y) in place. Tape off. Electronic thermostat replaces outdoor reset with improved zero droop performance.

70-6627 • 72

G

L

W1

W1

W1

W1

–

W2

W2

W2

W2

Aux.

G

F

O I

F G H I

Y1/W1 D

D

1st Stage Heat

A B C D E

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 G1 1R 00 10 4 00

Y5

94

G1 1

3 R1 94 Y5

41

76

5

X

A1

55

Common A

T8

Existing Terminals

61

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

L

O I

F

G

or

L

G

F

H

O

L

O I

F

G

C

O/B

or

L

G

F

G E

E C

O/B H

C

O/B

L

H

To eliminate auto fan in EM. Heat mode, see page 9. Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13160

JANITROL/TAPPAN

T T8 8011 01 R1 1R 00 10 6 14

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

5 42 R1 Y5

94

41

A1

71 B

T8

Existing Terminals

Auxiliary Heat

–

OTC

Fan

or

–

W1

W1

W2

W2

W2

G

G

G

or

Y

Y

E

E

E

1st Stage Heat

Y1

Y1 E

or

C/O Valve Cool

O

System Monitor

Y1/W1 E

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

I

W2

G B

Y1 E

W1

W1

G

C/O Valve Heat

Y E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

C

Function

T T8 8611 61 G2 1G 00 20 2 28

T T8 8611 61 R1 1G 00 10 0 04

Common D

2

Y Y5 594G 94 14 G1 19 47 6

T T8 8411 41 R1 1R 00 10 2 28

Chronotherm III

Electromechanical

Electronic Replacement or Upgrade Chronotherm IV

®

W1 G

B

B

B

B

B

O

or

or

A

O/B

B

B

O

O

A

or

O/B

A

O/B

A

O

O

O

O

–

–

L

–

L

L

L

L

L

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Configure O/B (select models) in Installer Setup. B Both First stage heat and cool are connected to Y terminal. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E Do not remove factory-installed jumper.

F

O/B

A

O

F

O/B

or

G A

F

O/B

– I

F Optional LED indication activated with completed circuit on X1 and X2 terminals. G Thermostat will have connection to either O or B terminal, not both. H If multiple auxiliary heat loads are used connect to W2 (Aux W8900B) terminal. I When W2 is not used, configure W2 cycle rate to NC.

M13223

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1109/Q672F1117 (080-13708-52/080-13708-53) T874G1147/Q674F1139

70-6627 • 73

KEEPRITE

Chronotherm III

T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

Existing Terminals

E

E

1st Stage Heat

–

–

W1

W1

Aux. Heat

W

W2

W2

W2

Fan

G

G

G

G

Y1

or

Y

Y

E

Y1 E

W1

Y E

Y1 E

W PC8 89 90 00 0/ B1 00 2

T T8 8411 41 R1 1R 00 10 2 28

B

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8611 61 G2 1G 00 20 2 28

Electronic Replacement or Upgrade Chronotherm IV

®

Y1/W1 E

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

or

1

or

G 1

1

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor

–

–

L

–

L

L

L

L

L

L

Em. Heat

X

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

–

–

–

–

–

–

LED Indication

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays.

or

O/B

B

O

O

1

O/B

or

O/B

O/B

1

O/B

1

O/B

B

D Terminal X (C,B) must be connected to transformer common. E Leave factory-installed jumper in place.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1814/Q674L1132

70-6627 • 74

B

B

M13193

LENNOX TYPICAL HP6 (ALTERNATE)

C

C

C

C

C

R

R

R

R

R

R

R

R

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

42 R1

or

or

or

Common D

X2

Power

V

R

V/VR

V/VR

Compressor

M

W1

M1

M

–

–

–

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

C

94

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Y5

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

I

I

B J

Y1

–

–

R

–

W1

W1

Auxiliary Heat

Y

W2

Y

Y

W2

W2

Fan

F

G

F

G

G

G

H

Y

J

J

1st Stage Heat

or

J

W1

J

J

J

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

or

A

or

G A

A

C/O Valve Heat

–

–

–

–

B

B

B

B

B

C/O Valve Cool

R

Y1

–

R

O

O

O

O

O

System Monitor/ System Defrost

–

–

–

–

L

–

L

Em. Heat

E

–

–

–

E

Multiple Aux. Heat Loads C

–

–

–

–

–

W3

–

–

–

–

–

–

LED Indicator

–

–

–

–

–

X1 X2

X1 X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

–

–

W2

F

E

E

E

E

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to M terminal. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or relays. D Terminal X (C) must be connected to transformer common. E Field-installed E to W2 (Aux) jumper required. F LED is energized when terminal is powered.

G

E

L

E

G

E

or

L

E

O/B

B

B

O

O

A

O/B F

E

L

E

G

E

or

L

E

K

O/B

O/B

A

O/B F

E

A

O/B

L

E

F

E

K

G L terminal is powered continuously when thermostat is in Em. Ht. position. H If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. I If separate transformers are used, replace with one 75 VA transformer as shown on page 78. J When replacing models with one compressor terminal (M), jumper Y1 to W1. K When W2 is not used, configure W2 cycle rate to NC. M13161

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1026/Q672E1019 T872G1067/Q672E1142 (P-8-11222) T872R1040/Q672B1202 (P-8-11221) T874R1024/Q674B1160 T874G1014/Q674E1148 (24F5801) T874G1154/Q674E1015 T874G1022/Q674E1148 (24F5701)

70-6627 • 75

LENNOX

or D Power

Compressor

R

Y1

V VR V VR V

M1

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

X

–

C

C

C

C

C

C

R

R

R

R

R

R

R

R

Y1

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

or D

M

E

C E

E

1st Stage Heat

W1

R

–

W1

W1

Auxiliary Heat

W2

Y

Y

W2

W2

Fan

G

F

F

G

G

C/O Valve Cool

–

–

R

O

X1

–

–

Em. Heat

–

–

2nd Stage Compressor

–

–

E

E

E

E

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

O

O

O

–

–

L

L

–

–

–

E

–

–

–

–

A Terminal X (C) must be connected to transformer common. B Configure O/B (select models) in Installer Setup. C If separate Y1 and W1 terminals are required, install R8222D1014; see page 12.

70-6627 • 76

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47 T8 T8 011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

AV NO AIL T AB LE

T8

–

E

SystemMonitor/ System Defrost

Electronic Replacement or Upgrade Chronotherm IV

or –

NOT AVAILABLE

or –

41

Existing Terminals

Function Common A

B1

00

0

Electromechanical

Chronotherm® III

T Q6 874C 74 10 B1 18 07 5

HP6

F

E –

O

or

B

O/B

L F

E –

O

O

L F

E –

or

B

O/B

L F

E –

G

B

O/B

L F

E W2

F G

D If separate transformers are used, replace with one 75 VA transformer as shown on page 78. E When replacing models with one compressor terminal, jumper Y1 to W1. F Field-installed E to W2 (Aux) jumper required. G When W2 is not used, configure W2 cycle rate to NC. M13162

LENNOX HP9, HP10 IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78.

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

X

X

X

X

C

C

C

C

C

C

Common Outside

X3

–

–

–

–

–

–

–

–

–

Power Indoor

VR

R

R

R

R

R

R

R

R

R

Power Outside

V

–

–

–

–

–

–

–

–

–

Compressor

M

Y

Y

Y1

5 Y5

94

R1

42

71 A1 41

Existing Terminals

T8

Function

I

E

–

1st Stage Heat Auxiliary Heat Fan

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 R1 1G 00 10 0 04

Common Indoor D

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8011 01 R1 1R 00 10 6 14

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

W1

or

Y

F

or

Y1

–

W1

W1

W2

W2

W2

G

G

G

Y

Y

E

E

Y1 E

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

B

B

B

B

B

C/O Valve Cool

R

O

O

O

O

O

O

System Monitor/ System Defrost

L

Em. Heat

E

Thermistor

A

Multiple Aux. Heat Loads LED Indication

J

Y1/W1 E

W1

–

L

Y1 E

W1

C/O Valve Heat

C

Y E

L

K

L

K

or

or

L

A

O/B

B

B

O

O

A

O/B J

L

K

or

or

G A

O/B

A

O/B

A

O/B

L

J

A

O/B

L

E

E

E

E

E

E

E

E

E

–

–

–

–

–

–

–

–

–

–

W3

W3

W3

–

–

–

–

–

–

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

–

B

G

A Configure O/B (select models) in Installer Setup. B Tape off. Not used. C R8222B1067 Relay required to operate system monitor light (emergency heat LED) on TRADELINE replacement thermostats. See page 10. D Terminal X (C) must be connected to transformer common. E Do not remove factory-installed jumper. F Optional Check LED on T8611G1004. See Fig. 26.

F

J

G Field-installed X2 to X jumper (provided). H Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC. I If separate transformers are used, replace with one 75 VA transformer, as shown on page 78. J LED is energized when terminal is powered. K L terminal is powered continuously when thermostat is in Em. Ht. position. M13163

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1067/Q672L1029 (P-8-11222) T874C1448/Q674L12165 (24F5101/24F5901) T872R1024/Q672L1003 T874R1020/Q674L1025 (24F5401/24F6101) T872R1040/Q672L1029 (P-8-11221) T874R1178/Q674L1165 (24F5601/24F5901) T872R1131/Q672L1144

70-6627 • 77

IMPORTANT:

DISCONNECT POWER SUPPLY BEFORE BEGINNING WIRING.

STEP 4

STEP 3

TIE FORMER OUTSIDE TRANSFORMER COMMON TO NEW TRANSORMER COMMON

STEP 1

ATTACH BOTH WIRES (FORMER VR AND V) TO REPLACEMENT THERMOSTAT R TERMINAL

REMOVE FORMER OUTSIDE TRANSFORMER FORMER

REPLACEMENT THERMOSTAT/ SUBBASE

TAPE OFF

X X

V YELLOW F

G

INDOOR BLOWER RELAY DEFROST CONTROL RELAY

COMPRESSOR CONTACTOR

M

Y (Y1 + W1)

R

O

E

E

X

X

Y

W2

L

L

DEFROST RELAY

REVERSING VALVE

EMERGENCY HEAT RELAY

3

HEAT RELAY NO. 1

DEFROST RELAY

SERVICE LIGHT THERMOSTAT

1

(X1)

X2

X

THERMISTOR

OUTDOOR THERMOSTAT

HEAT RELAY NO. 2

HEAT RELAY NO. 1 (AUX)

70-6627 • 78

VR

R

EMERGENCY HEAT RELAY

STEP 2 1

TAPE OFF

A

REPLACE FORMER INDOOR TRANSFORMER WITH NEW 75VA AT88A1021 OR AT175A1008

RELAY REQUIRED TO OPERATE SYSTEM MONITOR LIGHT ON TRADELINE THERMOSTATS. TAPE OFF IF NOT DESIRED.

M958B

LENNOX HP11 IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78.

Electronic Replacement or Upgrade Chronotherm IV W PC8 89 90 00 0/ B1 00 2

X

X1

C

C

C

C

R

R

R

R

R

–

–

–

–

–

G

G

G

G

G

Y

Y1

Y1

Y1/W1

Y2

Y2

Y2

Y2

G

VR

Common Outside

X

Common Outside

V

Compressor Stage 1

M

Y1

Compressor Stage 2

M2

Y2

G

1M 10

08

51

1M 70

T8

61

A

Power Indoor

02

T T8 8611 61 M2 1M 01 20 7 25

Common D

Existing Terminals

T8

Function

T8 Q6 74D 74 116 F1 5/ 02 2

Electromechanical Chronotherm® III

E

W2

– C

– C

W2 C

Auxiliary Heat

Y

W2

W3

Fan

F

G

G

G

C/O Valve Cool

R

O

O

O/B

C/O Valve Heat

–

B

B

O/B

System Monitor/ System Defrost

L

X2

Em. Heat

E

E

E

E

E

E

Thermistor

A

–

–

–

–

–

1st Stage Heat

–

W1

–

–

–

–

LED Indication

–

–

X1 X2

–

X1 X2

B

A IMPORTANT: When subbase system is in AUTO position, equipment will operate in COOL mode only (Q674F1022). B For emergency heat indication, jumper E and X2. For auxiliary heat indication, jumper W2 and X2. For any X2 functions, X1 must be connected to transformer common. C For proper operation of auxiliary heat connect Y to W3 or AUX terminal. D Terminal must be connected to the transformer common. E W1 to Y1 jumper required.

L

J

W3

L

F

W3 G

H

H

I

O/B

O/B

L

C

Aux. G

H

H

O/B

O/B

J

L

F

H

H

I

–

F Optional LED indication activated with completed circuit on X1 and X2 terminals. G Replace separate indoor and outdoor transformers with one 75 VA transformer. See page 78 for wiring diagram. H Configure O/B (select models) in Installer Setup. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13156

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1323/Q672L1201 T874D1033 T874D1199 T874D1207/Q674L1199 T874D1207/Q674L1389

70-6627 • 79

LENNOX HP16, HP19, HP21, HP22 (DIRECT REPLACEMENTS)

C

C

C

C

C

C

V VR

R

R

R

R

R

R

R

R

R

M

Y

Y

Y

Y5

Y5

94

G1

16

3 94

R1

76

5 A1 41 T8

W PC8 89 90 00 0/ B1 00 2

B

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8511 51 G1 1G 02 10 1 47

B

55

Common A

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

B

Existing Terminals

1

T T8 8611 61 R1 1G 00 10 0 04

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

F

Power Compressor

Y1

or

Y

Y

C

1st Stage Heat

–

–

–

–

Auxiliary Heat

Y

W

W

W

Fan

F

G

G

C/O Valve Heat

–

–

C/O Valve Cool

R

O

System Monitor/ Sytem Defrost

L

Outdoor Stat/ Em. Heat

E

X2

X2

Outdoor Sensor

A

T

LED Indication

–

–

G

F

J

Y1 C

Y C

Y1

Y1/W1 C

C

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

–

–

B

B

B

O

O

O

O

O

F

J

F

W1

J

E

E

or

or

H

O/B

B

B

O

O

H

O/B

L

J

L

E

or

H

O/B

or

H

O/B

H

O/B

L

J

H

O/B

L

L

L

X2

E

E

E

E

E

E

T

T

B

B

B

B

B

B

–

–

X1 X2

–

–

–

X1 X2

J

G

A Terminal B (C or X) must be connected to transformer common. B Tape off. Thermostat replaces outdoor reset with improved zero droop performance. C Do not remove factory-installed jumper. D Optional LED indication activated with completed circuit on X1 and X2 terminals. E L terminal is powered continuously when thermostat is in Em. Ht. position.

D

–

F If separate transformers are used, replace with one 75 Va transformer as shown on page 78. G R8222B1067 Relay required to operate system monitor light (emergency heat LED) on TRADELINE replacement thermostats. See page 11. Tape off if LED indication is not desired. H Configure O/B (select models) in Installer Setup. I When W2 is not used, configure W2 cycle rate to NC. M13164 J LED is energized when terminal is powered.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874C1448/Q674L1355 (24F5101/31F3201) T874C1448/Q674L1165 (24F5101/24F5901) T874R1178/Q674L1355 (24F5601/31F3201) T874R1178/Q674L1165 (24F5601/24F5901)

70-6627 • 80

D

LENNOX HP16, HP18, HP19, HP20, HP21, HP22

C

C

C

C

C

C

Power

V

Compressor

or

R

R

R

R

R

R

R

R

R

M

Y

Y

Y1

5 42 R1 Y5

94

A1 41 T8

I

VR or

or

R

Y

Y1

H

1st Stage Heat Auxiliary Heat

–

Y

or

Fan

F

C/O Valve Heat

–

C/O Valve Cool

R

W PC8 89 90 00 0/ B1 00 2

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71

Common G

Existing Terminals or or or X X2 C X

T T8 8511 51 G1 1G 02 10 1 47 T8 T8 011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

X

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

W or or

or

W1

W1

W2

W2

W2

G

G

G

B

B

O

O

or

W2

CF

Y

Y

H

H

–

or

Y1 H

W1

Y H

Y1

Y1/W1 H

H

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

M

M

or

A

O/B

or

B

B

O

O

A

O/B L

or

or

M

A

O/B

A

O/B

A

O/B L

A

O/B

System Monitor/ System Defrost

L

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads E

W3

W3

W3

W3

K

K

K

K

K

K

Thermistor

A

D

–

–

–

–

–

–

–

–

–

X2

–

X2

–

–

–

L

L

L

L

L

L

J

L

L

F

LED Indication

X1

or

B

X1

X2

A Configure O/B (select models) in Installer Setup. B Optional LED indication activated with completed circuit on X1 and X2 terminals. C Not on HP18 or HP20. D Tape off. Not used. E Terminal is for multiple second stage loads such as contactors, sequencers, or relays. F R8222B1067 Relay required to operate system monitor light (emergency heat LED) on TRADELINE replacement thermostats, see page 10. Tape off if LED indication is not desired.

X1

X2

B

X1

X2

B

–

G Terminal X (X2 or C) must be connected to transformer common. H Do not remove factory-installed jumper. I If separate transformers are used, replace with one 75 VA transformer as shown on page 78. J When W2 is not used, configure W2 cycle rate to NC. K If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. L LED is energized when terminal is powered. M L terminal is powered continuously in Emergency Heat Position. M13165

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874C1448/Q674L1355(24F5101/31F3201) T874C1448/Q674L1165(24F5101/24F5901) T874G1014/Q674F1113(24F5801/24F6201) T874G1154/Q674F1105 T874R1178/Q674L1355(24F5601/31F3201) T874R1178/Q674L1165(24F5601/24F5901) T8141A1089 T8611G1053 (27H3001)

70-6627 • 81

LUXAIRE (MONCRIEF/FRASER JOHNSTON)

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

B

Y

Y

Y1

5 42 R1 Y5

94

A1 41 T8

E

1st Stage Heat Auxiliary Heat

–

W

or

W2

W1

W1

W2

W2

W2

Y

Y

E

E

–

or

Y1

Y1 E

W1

Y E

Y1

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71

Common D

Existing Terminals or B X

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

X

2

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 E

E

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

Fan

G

G

G

G

G

G

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

–

–

L

–

L

L

L

L

L

L

E

E

E

E

E

E

E

E

E

W3

W3

G

G

G

G

G

G

–

–

–

–

–

–

EM. Heat

X

or

E

Multiple Aux. Heat Loads C

–

W3

LED Indication

–

–

X2 F

2nd Stage Compressor

–

–

–

X1

X2

I

X2

H

or

A

O/B

B

B

O

O

A

O/B

or

or

X1

A

O/B

A

O/B

A

O/B

X2

I

A

O/B

– J

–

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D Terminal X (C or B) must be connected to transformer common. E Do not remove factory-installed jumper. F Field-installed X2 to X jumper (provided).

70-6627 • 82

X1

or

J

–

–

W2

G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. H Optional CHECK LED. Connect X1 to switching device; jumper X2 to C. I Optional LED indication activated with completed circuit on X1 and X2 terminals. J When W2 is not used, configure W2 cycle rate to NC. M13166

MAGIC CHEF “PB” SERIES EQUIPMENT

Common B

C

Power

R

1st Stage Cool

Y1

1st Stage Heat

W1

2nd Stage Heat

W2

Fan

G

C/O Valve Heat

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

T T8 8411 41 R1 1R 00 10 2 28

00 10 1R 61 T8

Y Y5 594G 94 14 G1 19 47 6

T8 Q6 74C 74 101 B 8 A 1034 /

Existing Terminals

AV NO AI T LA BL

E

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

C

C

C

C

C

C

Rc

R

R

R

R

R

R

R

Y1

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

C

C

C

C

C

F

C

C

W1

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

W2

W2

W2

G

G

G

G

G

G

G

G

–

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

System Monitor/ System Defrost

X1

EM. Heat

E

–

E

E

E

E

E

E

E

2nd Stage Cool

–

Y2

–

–

–

–

–

–

Y2

Power Heat

–

Rh

–

–

–

–

–

–

–

NOT AVAILABLE

W1

X1

E

A IMPORTANT: No provision for emergency heat, system monitor (compressor fault), or auxiliary heat LEDs. B Terminal C (X) must be connected to transformer common. C Remove Y1 (Y) to W1 (W) jumper.

L

4

L

4

or

or

L

O/B

B

B

O/B

O

O

E

L

4

or

or

L

O/B

O/B

O/B

O/B

E

L

E

D L terminal is powered continuously when thermostat is in Em. Ht. position. E LED is energized when terminal is powered. F If separate Y1 and W1 terminals required, install R8222D1014; see page 12. M13167

70-6627 • 83

MAGIC CHEF “PE” SERIES EQUIPMENT

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 T8

41

A1

71 B

or

Y1

G

G

1st Stage Heat

–

–

W1

W1

Aux. Heat

W

W2

W2

W2

Fan

G

G

G

G

Y

Y

G

Y1

W1

Y

Y1 G

G

G

W PC8 89 90 00 0/ B1 00 2

X

T T8 8611 61 G2 1G 00 20 2 28

X

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

X

T T8 8611 61 R1 1G 00 10 0 04

C

Existing Terminals

Function

Y Y5 594G 94 14 G1 19 47 6

Common F

5

T T8 8411 41 R1 1R 00 10 2 28

Electromechanical

Y1/W1 G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

L

or

A

or

G A

A

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

X1

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

J

J

J

J

J

J

LED Indication

–

–

X2

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

E

L

L

N

L

N

O/B

or

L

B

B

O

O

A

O/B M

L

or

N

O/B

O/B

A

O/B

L

M

A

O/B M

L

4

I

X1

X2

K

X1

X2

H

K

X1

X2

– L

–

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple second stage loads such as contactors, sequencers, or relays. D If provided on original equipment. E Relay (typically R8222B1067) required if outdoor section has reset shunt relay and malfunction light indication is desired on thermostat. See page 11. F Terminal C (X) must be connected to transformer common. G Do not remove factory-installed jumper.

–

–

W2

H Optional CHECK LED on T8611G1004. Connect X1 to X1 on control terminal; jumper X2 to R. I Field-installed X2 to X jumper (provided). J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. K Optional LED indication activated with completed circuit on X1 and X2 terminals. L When W2 is not used, configure W2 cycle rate to NC. M LED is energized when terminal is powered. N L terminal is powered continuously in Emergency Heat Position.

M13168

70-6627 • 84

MAMMOTH

C

C

C

C

C

R

or

Power Reset 1st Stage Comp.

R

R

R

R

R

R

R

R

R

–

–

–

–

–

–

–

–

–

Y

Y

Y1

Y

Y1

Y

Y1

Y1/W1

R2 or

Y1

Y

B

42 R1 94 Y5

A1 41 T8

R1

G

Y2

–

–

–

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

D

X

or

Y

G

G

2nd Stage Comp.

System Monitor/ System Defrost

or

Y1

G

–

G

G

G

W PC8 89 90 00 0/ B1 00 2

C

2

Power

T T8 8611 61 G2 1G 00 20 2 28

X

T T8 8011 01 R1 1R 00 10 6 14

X

71

Common F

Existing Terminals or C X

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

–

–

–

–

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

W1

–

Y2

J

D

E

L

L

L

L

M

L

M

or

or

L

A

O/B

B

B

O

O

A

O/B L

L

M

or

or

L

A

O/B

A

O/B

A

O/B L

A

O/B

L

L

E

EM. Heat

–

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

–

–

–

–

–

–

LED Indication

–

–

X2

–

–

–

Filter

F

–

–

–

–

–

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

I

X1

X2

K

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D If provided on original equipment. E Relay (typically R8222B1067) required if outdoor section has reset shunt relay and malfunction light indication is desired on thermostat. See page 11. F Terminal X (C) must be connected to transformer common. T834C2135

X1

X2

H

K

X1

X2

–

J

G H I J K

Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). When W2 is not used, configure W2 cycle rate to NC. Optional LED indication activated with completed circuit on X1 and X2 terminals. L LED is energized when terminal is powered. M L terminal is powered continuously in Emergency Heat Position. M13169

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T841B1042 T874G1659/Q674C1330 T874H1096/Q674C1330

T874Y1005/Q674E1353

70-6627 • 85

MAMMOTH USED WITH A STANDARD HEAT PUMP THERMOSTAT

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 T8

41

A1

71 H

E

1st Stage Heat

–

Aux. Heat

W2

Fan

E

–

W1

W1

W2

W2

W2

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

Em. Heat

–

E

E

E

Multiple Aux. Heat Loads B

–

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

C

Y1

or

Y

Y

Y1

E

E

W1

Y

Y1

E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

C

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Y1/W1 E

E

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

J

L

L

G

L

X1

X2

K

A Configure O/B (select models) in Installer Setup. B Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. C If provided on original equipment. D Terminal must be connected to the transformer common. E Do not remove factory-installed jumper. F Optional CHECK LED on T8611G1004. Connect L to X1; jumper X2 to C. G Field-installed X2 to X jumper.

or

1

O/B

or

M

M

B

B

O

O

1

O/B

1

or

O/B

or

M

L

1

O/B

1

O/B L

1

O/B

L

L

L

E

E

E

E

E

E

I

I

I

I

I

I

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1

X2

F

L

L

L

K

X1

X2

– J

H Both first stage heat and cool are connected to Y terminal. I If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. J When W2 is not used, configure W2 cycle rate to NC. K Optional LED indication activated with completed circuit on X1 and X2 terminals. L LED is energized when terminal is powered. M L terminal is powered continuously when thermostat is in Em. Ht. position. M13194

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T834C2135 (71116901) T841B1042 (71117001)

70-6627 • 86

MAMMOTH USED WITH A NIGHT SETBACK THERMOSTAT

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28 T T8 8511 51 G1 1G 02 10 1 47

X

X

C

C

C

C

C

C

R

R

R

R

R

R

R

R

R

R2

–

–

–

–

–

–

–

–

–

Y

Y

Y

Y1

Power

R1

Night Setback Power Compressor

J D

R1 94 Y5

41

42

2

C

A1

71

Common F

T8

Existing Terminals

G

Y1

G

1st Stage Heat

–

–

W1

W1

Aux. Heat

–

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

X

Em. Heat

–

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

or

Y

Y

Y1

G

G

W1

Y

Y1

G

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 G

G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

B

L

L

I

L

X1 X2

E

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Disconnect external timimg device from circuit before wiring replacement thermostat. E Optional LED indication activated with completed circuit on X1 and X2 terminals. F Terminal must be connected to the transformer common.

or

1

O/B

or

M

M

B

B

O

O

1

O/B

or

1

O/B

or

M

L

1

O/B

1

O/B

1

O/B L

L

L

L

L

L

L

E

E

E

E

E

E

K

K

K

K

K

K

–

–

–

X1 X2

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1 X2

H

E B

G H I J K

Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. C terminal is located on terminal strip, not on subbase. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. L LED is energized when terminal is powered. M L terminal is powered continuously when thermostat is in Em. Ht. position. M13195

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1378/Q674C1124 T874G1659/Q674C1330 (71115201) T874H1096/Q674C1330 (71115201)

70-6627 • 87

MARTIN INDUSTRIES

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 T8

41

A1

71 B

F

or

Y1

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

Em. Heat

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

Y

Y

Y1

F

F

Y1

Y1/W1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

L

W1

Y F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

I

L

X1

X2

D

A Configure O/B (select models) in Installer Setup. B Both first stage heat and cool are connected to Y terminal. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D LED indication with completed circuit on X1 and X2 terminals. E Terminal must be connected to the transformer common.

or

or

J

J

1

O/B

B

B

O

O

1

O/B

1

or

O/B

O/B

J

I

1

O/B

1

or

1

O/B I

I

L

L

L

L

L

E

E

E

E

E

E

H

H

H

H

H

H

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1

X2

D

X1

X2

D

G

– G

F Do not remove factory-installed jumper. G When W2 is not used, configure W2 cycle rate to NC. H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13196

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1183 T841A1522 T841A1548 (24015808)

70-6627 • 88

PHILLIPS ENERGY

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y1

Y

Y

Y1

Y

Y1

Y5

94

R1

42

2 T8

41

A1

71 H

F

F

Y1

F

1st Stage Heat

W1

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

or

Y

Y

Y1

F

F

W1

F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

C

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Y1/W1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

Em. Heat

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

LED Indication

X2

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

H

G

O/B

or

I

I

L

or

1

B

B

O

O

1

O/B H

or

G 1

O/B

or

I

1

O/B

1

O/B

1

O/B

H

H

L

L

L

L

L

L

E

E

E

E

E

E

E

W3

E

E

E

E

E

E

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1 X2

J

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

X1 X2

F G H I J

J

X1 X2

J

– B

Do not remove factory-installed jumper. Field-installed X2 to X jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Optional LED indication activated with completed circuit on X1 and X2 terminals. M13197

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T8611R1174

70-6627 • 89

RHEEM/RUUD COOLING CHANGEOVER (PRE 11/85) (PCA, PNA, PNB TYPICAL)

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

or

Y

R1 94 Y5

41 T8

42

2

Y1

A1

71

Compressor

F

1st Stage Heat

W1

Aux. Heat

W2

Fan

Y1

F

or

Y

Y

Y1

F

F

Y1

Y1/W1 F

F

–

W1

W1

W2

W2

W2

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor

L

Em. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

E

E

E

E

E

E

LED Indication

–

–

X2

–

–

–

X1 X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

C

W1

Y F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

2

L

I

H

L

X1 X2

G

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

70-6627 • 90

J

X1 X2

F G H I J

L

G

J

or

1

O/B

or

L

B

B

O

O

1

O/B I

L

J

or

1

O/B

or

L

1

O/B

1

O/B I

G

1

O/B

L

I

– 2

Do not remove factory-installed jumper. Optional LED indication with completed circuit on X1 and X2 terminals. Field-installed X2 to X (C) jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13198

RHEEM/RUUD PCB, PFA, PGB, PGA HEATING CHANGEOVER (AFTER 11/85) RPCB, RPFA

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y1

Y1

Y

Y1

Y1/W1

Y5

94

R1

42

8 30 A1 41 T8

E

Y1

E

or

Y

Y

Y1

E

E

E

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

E

E

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

–

O

O

O

System Monitor

L

L

Em. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

H

W3

W3

H

H

H

H

H

H

LED Indication

–

–

X2

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

I

L

I

G

X1

X2

W2 J

I

G

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E Do not remove factory-installed jumper.

J

G

L

X1

J

X2

L

F

J

or

A

O/B

or

L

B

B

O

O

A

O/B I

L

J

or

A

O/B

or

L

X1

A

O/B

A

O/B I

X2

A

O/B

L

I

– B

F Optional Check LED on T8611G1004. See Fig. 26. G Field-installed X2 to X (C) jumper. H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13206

70-6627 • 91

SECO TA2000, TA2040, TA2010 TA2050

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y

Y1

94

R1

42

2 71 A1

Y5

41 T8

F

Y1

–

–

W1

W1

Aux. Heat

W2

W

W

W

Fan

G

G

G

G

Y

Y

Y1

F

F

1st Stage Heat

or

F

W1

F

Y1/W1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

Em. Heat

E

Multiple Aux. Heat Lads C

W3

W3

LED Indication

–

–

X2 H

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

J

J

L

E

F

E

I

L

F

W3

E

F

W3

X1

X2

G

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

70-6627 • 92

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common D

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

K

L

K

or

A

O/B

or

L

B

B

O

O

A

O/B I

L

or

G A

O/B

or

K

L

A

O/B

A

O/B I

A

O/B

L

I

E

E

E

E

E

E

E

E

E

E

E

E

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1

X2

F G H I J K

G

X1

X2

G

– B

Do not remove factory-installed jumper. Optional LED indication with completed circuit on X1 and X2 terminals. Field-installed X2 to X (C) jumper. LED is energized when terminal is powered. E and L terminals are not available on TA2010 or TA2050. L terminal is powered continuously when thermostat is in Em. Ht. position. M13171

SECO TA2060

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

B

B

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y

Y1

Y1/W1

94

94 Y5

T8

G1 1

3 R1

76

5 55 A1 41

Y5

Y1

or

Y

Y

Y1

C

1st Stage Heat

–

–

–

–

Aux. Heat

W2

W

W

W

Fan

G

G

G

C/O Valve Heat

–

–

–

C

W1

C

W PC8 89 90 00 0/ B1 00 2

B

T T8 8611 61 G2 1G 00 20 2 28

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8011 01 R1 1R 00 10 6 14

T T8 8411 41 R1 1R 00 10 2 28

Common A

Function

61

T8 T8 611R 61 10 1G 00 10 04

Electromechanical

C

C

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

–

B

B

G

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

F

Outdoor Thermistor/ Sensor

W3

T

Em. Heat

E

X2

X2

X2

LED Indication

–

–

–

–

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

O H

F

F

T

O H

F

F

T

O H

L

F

A Terminal must be connected to the transformer common. B Tape off. Thermostat replaces outdoor reset with improved zero droop performance. C Do not remove factory-installed jumper. D Optional LED indication with completed circuit on X1 and X2 terminals.

B

O I

L

O I

or

E

O/B

or

L

B

B

E

O/B H

O

L

O I

E

or

O/B

E

O/B

E

or

O/B

L

H

E

O/B

L

H

B

B

B

B

B

B

E

E

E

E

E

E

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1

X2

E F G H I

D

X1

X2

4

– G

Configure O/B (select models) in Installer Setup. Replace existing thermistor with Honeywell C815A1005. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13199

70-6627 • 93

SUN MANUFACTURING

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y

Y1

Y1

E

Y5

94

R1

42

2 71 A1 41 T8

E

1st Stage Heat

–

–

W1

W1

Aux. Heat

W1

W2

W2

W2

Fan

G

G

G

G

or

Y

Y

Y1

E

E

W1

E

Y1/W1 E

E

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

Em. Heat

E

E

Multiple Aux. Heat Loads D

W3

W3

LED Indication

–

–

X2 G

X2 G

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

A B C D

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common C

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

I

F

L

X1

E

E

W3

F

I

W3

F

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal must be connected to the transformer common. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. E Do not remove factory-installed jumper.

L

or

A

O/B

or

J

J

B

B

O

O

A

O/B

or

G A

O/B

or

J

I

A

O/B

A

O/B I

A

O/B

L

L

L

E

E

E

E

E

E

H

H

H

H

H

H

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1 X2

F

X1 X2

L

I

L

– B

F Optional LED indication with completed circuit on X1 and X2 terminals. G Field-installed X2 to X (C) jumper. H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. I LED is energized when terminal is powered. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13200

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1399 (HPL1404)

70-6627 • 94

SQUARE D/SUN DIAL

C

C

C

C

C

C

R

R

R

R

R

R

Y5

94

R1

42

2 A1 41 T8

Power

R

R

R

R

Compressor

Y

Y

Y

Y1

Y1

F

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

B

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

or

Y

Y1 F

W1

Y F

Y1/W1

Y1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

B

8

Em. Heat

Y

F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71 Common D

Existing Terminals or C X

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 / 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

K

or

G

L

E

or

A

O/B

or

G

B

B

O

O

A

O/B 8

or

A

O/B A

or

G

A

O/B

O/B

A

O/B

8

8

L

L

L

L

L

L

E

E

E

E

E

E

E

E

E

W3

E

E

E

E

E

E

–

–

–

Multiple Aux. Heat Loads C

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

X1

X2

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common.

X1

X2

X1

X2

– B

E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. F Do not remove factory-installed jumper. G L terminal is powered continuously when thermostat is in Em. Ht. position. 8 LED is energized when terminal is powered. M13201

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1357 T841A1365 (121000012)

70-6627 • 95

SQUARE D/SUN DIAL

Compressor

Y

or

Y1

C

C

C

R

R

R

R

R

R

R

Y

Y1

Y

Y1

Y1/W1

Y1 A

Aux. Heat

W2

Fan

G

C/O Valve Heat

B

C/O Valve Cool System Monitor/ System Defrost Em. Heat

K

W1 NOT AVAILABLE

W1 NOT AVAILABLE

1st Stage Heat

10 1R 61

or

Y

A

A

W1

A

A

A

W1

W1

W1

W1

– E

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

O

O

O

O

O

L

X2

or

E

F

E

X2

X2

2nd Stage Compressor

–

–

2nd Stage Cool

Y2

Y2

Remove factory-installed Y1 (Y) to W1 jumper. Terminal must be connected to the transformer common. If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. Optional LED indication activated with completed circuit on X1 and X2 terminals.

L

E

G

L

E

G

or

or

L

E

O/B

B

B

O/B

O

O

F

L

E

G

or

or

L

O/B

O/B

O/B

O/B

F

E X1 X2

–

–

–

–

–

L

F

E D

– W2

E

Y2

E When W2 is not used, configure W2 cycle rate to NC. F LED is energized when terminal is powered. G L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872C1525/Q672F1182 (HCD-2/HCB-1) T874C1224/Q674F1071 (63600-002-09/63600-002-11)

70-6627 • 96

C

W2

LED Indication

A B C D

T8

Y1

W PC8 89 90 00 0/ B1 00 2

C

T T8 8611 61 G2 1G 00 20 2 28

C

T T8 8011 01 R1 1R 00 10 6 14

C

00

X1

T8 Q6 74C 74 101 F1 8/ 02 2

AV NO AI T LA BL E

R

T T8 8511 51 G1 1G 02 10 1 47

Power

T T8 8411 41 R1 1R 00 10 2 28

Common B

Existing Terminals or or X X1 C

AV NO AI T LA BL E

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

M13202

TRANE/AMERICAN STANDARD DIRECT TRADE REPLACEMENTS

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

T T8 8411 41 R1 1R 00 10 2 28

T T8 8611 61 R1 1G 00 10 0 04

Y5

Y5

94

94

G1 1

3 R1

76

5 55 A1 41 T8

Existing Terminals

61

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Common A

B

B

B

B

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y1

or

Y

Y

C

1st Stage Heat Aux. Heat

–

W or W1

–

–

–

W

W

W

Y1 C

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat

–

–

–

–

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

F

F

Outdoor Sensor C

T

or

A

G

F

G

Y1/W1 C

W1

G

F

Y1 C

W1

Fan

G

Y C

L

H

L

H

or

or

E

O/B

B

B

O

O

E

O/B

L

G

L

H

or

E

O/B

or

L

E

O/B G

E

O/B E

O/B

L

T

T

T

B

B

B

B

B

B

E

E

E

E

E

–

–

–

X1 X2

G

Outdoor Stat

X2

X2

X2

X2

E

LED Indication

–

–

–

–

X1 X2

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Terminal must be connected to the transformer common. B Tape off. Thermostat replaces outdoor reset with improved zero droop performance. C Do not remove factory-installed jumper. D Optional LED indication with completed circuit on X1 and X2 terminals.

E F G H

D

D

F

– F

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13225

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1407 (ASYSTAT652) T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225) T841A1530 (ASYSTAT652A) T8141A1014 T872G1059/Q672J1039 T8141A1071 T872R1057/Q672L1037 T8300A1128/Q6300A1101 (BAY28X194/BAY28X195) T874G1204/Q674J1043 T8611G1038 (THT-0603) T874G1675/Q674J1142 (ASYSTAT650/WY28X0250) T8611G1111 (TAYSTAT501) T874R1053/Q674L1140 T8611R1091 T874R1426/Q674L1496 (BAYSTAT339/WY28X0112) T8611R1109 (THT-0602) T874R1657/Q674L1611 (ASYSTAT651/WY28X235) T8611R1117 (ASYSTAT700)

70-6627 • 97

TRANE/AMERICAN STANDARD

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

T T8 8411 41 R1 1R 00 10 2 28

T T8 8611 61 R1 1G 00 10 0 04

Y5

Y5

94

94

G1

16

3 R1

76

5 55 A1 41 T8

Existing Terminals

1

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Common A

C

B

B

B

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y

Compressor

Y

or

Y1

or

Y1

Y

Y

C

1st Stage Heat

W1

–

–

–

Y1 C

W1

Y C

Y1/W1

Y1 C

C

W1

W1

W1

W1

–

Aux. Heat

W2

W

W

W

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

G

G

C/O Valve Heat

B

–

–

–

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

F

Outdoor Stat

E

X2

X2

X2

E

–

–

–

X1 X2

LED Indication

X1

or

X2

G

F

G

F

G

L

H

L

D

H

or

or

L

E

O/B

B

B

O

O

E

O/B G

L

H

or

or

L

E

O/B E

O/B G

E

O/B E

O/B

L

E

E

E

E

–

–

–

X1 X2

–

G

E B

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Terminal must be connected to the transformer common. B Optional LED indication activated with completed circuit on X1 and X2 terminals. C Do not remove factory-installed jumper. D Optional LED on T8611G1004. See Fig. 26.

70-6627 • 98

E F G H

F

F

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13226

TRANE/AMERICAN STANDARD

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

Existing Terminals

E

1st Stage Heat Aux. Heat

–

W or X1

or

Y1

–

W1

W1

W2

W2

W2

Y

Y

E

E

Y1 E

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

F

Outdoor Sensor

T

or

H

X1

H

Y1/W1 E

W1

G

H

Y1 E

W1

Fan

L

Y E

W PC8 89 90 00 0/ B1 00 2

B

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common B

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8511 51 G1 1G 02 10 1 47

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

L

I

L

I

or

or

D

O/B

B

B

O

O

D

O/B

L

H

L

I

or

D

O/B D

or

O/B H

L

D

O/B D

O/B

L

A

A

A

C

C

C

C

C

C

Outdoor Stat

X2

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads K

–

W3

W3

W3

J

J

J

J

J

J

LED Indication

–

–

X2 G

X2 G

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Tape off. Outdoor reset not provided with Tradeline replacement thermostat. B Terminal must be connected to the transformer common. C Tape off. Thermostat replaces outdoor reset with improved zero droop performance. 4 Configure O/B (select models) in Installer Setup. E Do not remove factory-installed jumper. F Optional Check LED on T8611G1004. See Fig. 26. G Field-installed X2 to X (C) jumper.

X1 X2 F

L

H

L

H LED is energized when terminal is powered. I L terminal is powered continuously when thermostat is in Em. Ht. position. J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. K Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. L When W2 is not used, configure W2 cycle rate to NC. M13227

70-6627 • 99

TRANE/AMERICAN STANDARD

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

or

Y1

R1 94 Y5

41 T8

42

2

Y

A1

71

Compressor

Existing Terminals

E

1st Stage Heat

W1

Y1

W1

W1

Y

Y

E

E

–

or

Y1 E

W1

Y E

Y1

W PC8 89 90 00 0/ B1 00 2

C

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common B

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8511 51 G1 1G 02 10 1 47

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1 E

E

W1

W1

W1

W1

–

Aux. Heat

W2

W2

W2

W2

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

Outdoor Stat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads D

–

W3

W3

W3

J

J

J

J

J

J

–

–

–

X1 X2

–

LED Indication

X1

or

L

X2

H

–

X2 G

L

X1 X2 C

I

X1 X2 F

L

I

or

or

K

O/B

B

B

O

O

K

O/B

L

H

L

I

or

K

O/B

or

L

K

O/B H

K

O/B K

O/B

L

H

C

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A When W2 is not used, configure W2 cycle rate to NC. B Terminal must be connected to the transformer common. C Optional LED indication activated with completed circuit on X1 and X2 terminals. D Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. E Do not remove factory-installed jumper.

A

A

F G H I J

Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. K Configure O/B (select models) in Installer Setup. M13228

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1407 (ASYSTAT652) T874R1053/Q674L1140 T8611G1038 (THT-0603) T841A1530 (ASYSTAT652A) T874R1426/Q674L1496 (BAYSTAT339/WY28X0112) T8611G111 (TAYSTAT501) T872G1059/Q672J1039 T874R1657/Q674L1611 (ASYSTAT651/WY28X235) T8611R1091 T872R1057/Q672L1037 T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225) T8611R1109 (THT-0602) T874G1204/Q674J1043 T8141A1014 T8611R1117 (ASYSTAT700) T874G1675/Q674J1142 T8141A1071 (ASYSTAT650/WY28X0250) T8300A1128/Q6300A1101 (BAY28X194/BAY28X195)

70-6627 • 100

WEATHERKING

Electronic Replacement or Upgrade Chronotherm IV

®

Chronotherm III

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y1

Y

Y1

10

33

61

1R

G1 6 Y5

Y5

94

94

R1

79

8 30 A1 41 T8

T8

Y

Y1

C

C

C

W PC8 89 90 00 0/ B1 00 2

X

T T8 8611 61 G2 1G 00 20 2 28

X

Existing Terminals

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

X

Function

00

Common A

7

T T8 8411 41 R1 1R 00 10 2 28

Electromechanical

Y1/W1 C

C

1st Stage Heat

–

–

–

–

W1

W1

W1

W1

W1

–

Aux. Heat

W2

W2

W2

W2

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

L

Em. Heat

E

E

E

E

LED Indication

X

–

X2

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

Y2

A B C D

E

F

L

F

L

F

L

D

G

4

G or

or

G

4

G

4

G

B

O/B

B

B

O

O

B

O/B F

or

G

B

O/B

B

O/B

B

O/B F

B

O/B

E

E

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

E X1

L

F

E X2

L

4

G

L

X1

L

or

4

L

E

Terminal must be connected to the transformer common. Configure O/B (select models) in Installer Setup. Do not remove factory-installed jumper. To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9.

G

E X2

– E

E When W2 is not used, configure W2 cycle rate to NC. F LED is energized when terminal is powered. G L terminal is powered continuously when thermostat is in Em. Ht. position. M13205

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1456 (41-20796-65) T874R1830/Q674L1504 (41-20769-64)

70-6627 • 101

WEATHERKING TYPICAL WPH SERIES

R

Compressor

Y

or

W1

C

C

C

C

R

R

R

R

R

R

R

R

R

Y

Y

Y1

–

Aux. Heat

W2

or

Y1

G

42 R1 94 Y5

A1 41

–

W1

W1

W2

W2

W2

or

Y

Y

Y1

G

G

W1

W1

W1

–

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

E

W2 J

J

G

G

G

C/O Valve Heat

B

B

B

B

B

B

B

O

O

O

O

O

O

System Monitor/ System Defrost

L

or

or

Y1/W1 G

W1

G

O

Y1 G

W1

Fan

C/O Valve Cool

Y G

W PC8 89 90 00 0/ B1 00 2

C

G

1st Stage Heat

T T8 8611 61 G2 1G 00 20 2 28

C

T T8 8011 01 R1 1R 00 10 6 14

X

2

Power

T T8 8511 51 G1 1G 02 10 1 47

X

71

Common 6

T8

Existing Terminals or or X C1 C

T T8 8411 41 R1 1R 00 10 2 28

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1

X

L

D

X1

D

G

A

O/B

or

E

E

L

or

L

L

B

B

O

O

A

O/B D

L

E

or

A

O/B

or

L

A

O/B

A

O/B D

A

O/B

L

D

Em. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

J

J

J

J

J

J

LED Indication

–

K

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

I

X2 I

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D LED is energized when terminal is powered. E L terminal is powered continuously when thermostat is in Em. Ht. position. F Terminal must be connected to the transformer common.

X1 X2 H

G H I J

Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER OR CUSTOMER PART NUMBER T841A1373 T8141A1105 GE 3AAT80

70-6627 • 102

B

M13209

WESCO/ADDISON Models: WPH022, 028, 032, 036, 044, 054, 064. WRH022, 028, 032, 036, 044, 054, 064. WSH028, 032, 036, 042. DWPG024, 030, 036, 042, 048, 054, 060, 066. HWPG012, 017, 020, 024, 030, 036, 042, 048, 054, 060, 066. VWPG017, 020, 024, 030, 036, 042, 048, 054, 060, 066.

C

C

C

C

C

C

R

R

R

R

R

R

R

R

R

Y

Y

Y1

Compressor

R W1

or

Y

R1 94 Y5

A1 41 T8

42

2 Power

F

1st Stage Heat

–

Auxiliary W1 Heat

or

W2

or

W2

Y1

W1

W1

W2

W2

W2

Y

Y

F

F

–

or

Y1 F

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

G

C/O Valve Heat

–

B

B

B

B

B

B

O

O

O

O

O

O

or

O

D

Y1/W1 F

W1

G

Y1

Y1 F

W1

W1

Fan

C/O Valve Cool

Y F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

71 Common E

Existing Terminals or C1 C

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

G

G

or

or

A

O/B

B

B

O

O

A

O/B D

G

or

or

A

O/B

A

O/B

A

O/B D

A

O/B

System Monitor/ System Defrost

X

EM. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

–

–

–

–

–

–

LED Indication

–

–

X2

X1 X2

X1 X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

L

L

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays.

L

L

L

L

B

L

D

B

D LED is energized when terminal is powered. E Terminal must be connected to the transformer common. F Do not remove factory-installed jumper. G L terminal is powered continuously in Em. Ht. position. M13222

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1265/Q672F1265 T874G1287/Q6741253 T872G1281/Q672F1265 T874G1543/Q674F1345 (403-197) T872R1016/Q672B1103 T874R1012/Q674B1109 T874C1315

70-6627 • 103

WESTINGHOUSE TYPICAL HSO

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

F

Y1

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

W

W2

W2

W2

Fan

G

G

G

G

or

Y

Y

F

Y1 F

W1

F

Y1/W1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

B

C/O Valve Heat

B

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

L

or

L1

L

D

X1

D

L

J

L

J

or

A

O/B

or

L

B

B

O

O

A

O/B D

L

J

or

G A

O/B

or

L

A

O/B

A

O/B D

A

O/B

L

D

Em. Heat

E

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

W3

–

W3

W3

I

I

I

I

I

I

LED Indication

–

–

X2

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

H

X2 H

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D LED is energized when terminal is powered. E Terminal must be connected to the transformer common.

X1 X2 G

B

F G H I

Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. J L terminal is powered continuously when thermostat is in Em. Ht. position. M13210

T872G1034/Q672F1141 T872G1034/Q672J1062 T872R1149/Q672L1151 T874G1048/Q674J1019 T874R1103/Q674L1108

70-6627 • 104

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1034/Q672F1091 T872G1034/Q672F1257 T872G1034/Q672J1013 T872G1265/Q672F1265 T872R1149/Q672L1110 T872R1149/Q672L1128 T874G1048/Q674F1121 T874G1048/Q674F1246 T874G1048/Q674F1279 T874G1048/Q674J1050 T874G1188/Q674F1295 T874G1345 T874R1103/Q674L1173 T874R1244/Q674L1314 T874W1007/Q674L1256

WESTINGHOUSE TYPICAL HB, HI RELI, HLO

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

1st Stage Heat

W1

W1

W1

W1

W1

W1

W1

W1

2nd Stage Heat

W2

W2

W2

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

G

Y

2nd Stage Cool

10 1R 61 T8

5 42 R1 94 Y5

AV NO AI T LA BL

NOT AVAILABLE

1st Stage Cool

A

A

A

A

A

A

W PC8 89 90 00 0/ B1 00 2

C

T T8 8611 61 G2 1G 00 20 2 28

X

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

00

X

Function

Y Y5 594G 94 14 G1 19 47 6

Common 2

E

T T8 8411 41 R1 1R 00 10 2 28

Electromechanical

A

G

F

Y

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

–

–

–

–

–

–

–

–

Y2

C/O Valve Heat

–

B

B

B

B

B

C/O Valve Cool

–

O

O

O

O

O

System Monitor/ System Defrost

–

L

X1

L

L

L

L

L

L

Em. Heat

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

D

D

D

D

D

D

LED Indication

–

X2 E

X2 E

–

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

A Remove factory-installed Y1 (Y) to W1 (W) jumper. B Terminal must be connected to the transformer common. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

or

or

O/B

B

B

O/B

O

O

or

or

X1

O/B

O/B

O/B

O/B

X2 –

– W2

G

E Field-installed X2 to X (C) jumper. F If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. G When W2 is not used, configure W2 cycle rate to NC. M13211

70-6627 • 105

WESTINGHOUSE TYPICAL HE SERIES

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

V

R

R

R

R

R

R

R

R

R

Compressor

C

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

F

F

1st Stage Heat

–

–

W1

W1

Aux. Heat

H2

W2

W2

W2

Fan

F

G

G

C/O Valve Heat

Z

B

C/O Valve Cool

–

System Monitor/ System Defrost

or

Y1

Y

Y

F

Y1 F

Y1/W1

Y1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

O

–

–

L

–

L

L

Em. Heat

–

E

Multiple Aux. Heat Loads C

–

W3

W3

W3

G

G

G

G

LED Indication

–

–

X2

X1 X2

X1 X2

–

–

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

D

E

D

E

W1

Y F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

2

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

D

A Configure O/B (select models) in Installer Setup. B Use common from secondary side of system trransformer. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Field-installed E to W2 (Aux W8900B) jumper required.

70-6627 • 106

E

D

E

or

A

O/B

or

E

B

O

O

or

A

O/B

L D

B

L D

E

A

O/B

or

L D

E

A

O/B

L D

E

D

G

G

X1

A

O/B

A

O/B

H

X2

– H

E Terminal must be connected to the transformer common. F Do not remove factory-installed jumper. G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. H When W2 is not used, configure W2 cycle rate to NC. M13212

WESTINGHOUSE TYPICAL 2-SPEED PUMP

Electronic Replacement or Upgrade Chronotherm IV T T8 8611 61 M2 1M 01 20 7 25

W PC8 89 90 00 0/ B1 00 2

Common D

X

X1

C

C

C

C

Power

R

R

R

R

R

R

1st Stage Heat

–

W1

–

–

–

–

Y

Y1

Y1

Y1/W1

Y2

Y2

Y2

1M 10

08

51

1M 70

T8

61 T8

Function

02

Existing Terminals

T Q6 84D 74 116 F 5 A 1022

Electromechanical Chronotherm® III

C

Compressor Stage 1

Y1

Y1

Compressor Stage 2

Y2

Y2

Y2 F

F

F

2nd Stage Heat

–

W2

W2

–

–

W2

Auxiliary 3rd Stage Heat

–

–

W3

W3

W3

Aux.

Fan

G

G

G

G

G

G

C/O Valve Cool

O

O

O

O/B

C/O Valve Heat

B

C

B

O/B

System Monitor/ System Defrost

L

X2

Em. Heat

W

E

E

LED Indication

–

–

X1 X2

H

A When subbase system switch is in AUTO position, equipment will operate in COOL mode only. B IMPORTANT: Do not use T874D/Q674F1022 if B terminal is used on original equipment. C Y1 to W1 jumper required. D Terminal must be connected to the transformer common.

L

I

L

E

G

G

H

O/B

O/B

L

G

G

I

E

E

–

X1 X2

O/B

O/B

L

G

G

H

E E

–

E Optional LED indication activated with completed circuit on X1 and X2 terminals. F Y2 to W2 jumper required. G Configure O/B (Select Models) in Installer Setup. H LED is energized when terminal is powered. I L terminal is powered continuously when thermostat is in Em. Ht. position. M13242

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1356/Q672L1219 T874D,G/Q674L1223

70-6627 • 107

WHITE RODGERS TYPICAL 1F92-1, 1F92-6, 1F92-7, 1F58-910 THERMOSTAT, S28 SUBBASES

C

C

C

C

Compressor

R

R

R

R

R

R

R

R

Y

or

Y1

Y

Y

Y1

Y1

Y1

Y1/W1

–

–

–

W2

F

F

W2

W3

W3

W3

Aux.

G

G

G

G

Y2

Y2

Y2

Y2

Y

1st Stage Heat

W1

Aux. Heat

W2

3rd Stage Aux. Heat

W3

Fan

G

2nd Stage Cool

Y2

C/O Valve Heat

B

C/O Valve Cool

O

System Monitor/ System Defrost

L

Em. Heat

E

Multiple Aux. Heat Lads D LED Indication A B C D

W1

W1

W2

W2

W2

W1

C

G

G

C

C

10 1M A

K

B

B

B

O/B

O

O

O

O

O/B

–

L

–

L

E

E

E

E

E

E

E

–

W3

W3

W3

–

–

–

–

–

–

X2

C

C

H

G

X1

X2

J

X1

I

X2 G H I J

L

J

–

A

O/B

A

B

Configure O/B (select models) in Installer Setup. Do not remove factory-installed jumper. If provided on original equipment. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. E Terminal must be connected to the transformer common. F If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3.

70-6627 • 108

51

B

B

–

G

Y1

T8

42 R1 94 Y5

A1 41 T8

B

or

W PC8 89 90 00 0/ B1 00 2

X

2 Power

T T8 8611 61 M2 1M 01 20 7 25

X

71 Common E

Existing Terminals or X1 C

02

T8 T8 611R T8 611G 100 61 10 0 1M 04 70 08

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

O/B

H

L

X1

O/B

A

O/B

I

X2

L

J

K

A

A

H

–

Field-installed X2 to X (C) jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Optional LED indication activated with completed circuit on X1 and X2 terminals. K When 3rd Stage aux. heat is not used, leave W2 blank and wire auxiliary heat to aux. terminal. Configure W2 to NC in installer setup. M13141

WILLIAMSON COOLING CHANGEOVER

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

G

Y1

G

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

–

B

C/O Valve Cool

O

O

System Monitor/ System Defrost

L

Em. Heat

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

LED Indication

A

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

or

Y

Y

Y1

G

G

W1

Y

Y1

G

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common F

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Y1/W1 G

G

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

B

J

L

L

I

X1 X2

D

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Optional LED indication activated with completed circuit on X1 and X2 terminals. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

or

1

O/B

or

K

K

B

B

O

O

1

O/B

or

1

O/B

or

K

J

1

O/B

1

O/B J

1

O/B

L

L

L

E

E

E

E

E

E

E

E

E

E

E

E

–

–

–

X1 X2

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1 X2

F G H I J K

H

L

J

L

D

– B

Terminal must be connected to the transformer common. Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13213

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874C1570/Q674B1000 T874L1455/Q674L1322 T874R1236/Q674L1348 T874R1392/Q674L1447

70-6627 • 109

WILLIAMSON HEATING CHANGEOVER

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y1

Y

Y1

94

R1

42

2 71 A1 41 T8

Y5

Y

Y1

F

F

1st Stage Heat

–

–

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

C/O Valve Heat

W1

B

B

W1

Y1

or

Y

Y

Y1

F

F

W1

Y

Y1/W1 F

F

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

J

C/O Valve Cool

–

System Monitor/ System Defrost

L

Em. Heat

E

Multiple Aux. Heat Loads C

O

O

O A

O A

L

X1

E

E

E

W3

W3

W3

W3

LED Indication

–

–

X2

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

H

X2 H

A LED is energized when terminal is powered. B L terminal is powered continuously when thermostat is in Em. Ht. position. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

L

B

O

O

or

I

O/B

or

B

B

L

L

E

E

D

B

B

I

O/B A

O

O

or

I

O/B

or

B

I

O/B

I

O/B A

I

O/B

L

E

E

E

E

D

D

D

D

D

–

–

–

X1 X2

–

–

–

–

–

–

W2

–

–

–

–

–

Y2

X1 X2 G

E F G H I J

L

A

L

J

Terminal must be connected to the transformer common. Do not remove factory-installed jumper. Optional LED indication with completed circuit on X1 and X2 terminals. Field-installed X2 to X (C) jumper. Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. M13214

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874N1008/Q674F1196

70-6627 • 110

Y1

F

W PC8 89 90 00 0/ B1 00 2

T T8 8511 51 G1 1G 02 10 1 47

X

Existing Terminals

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

Function

T T8 8011 01 R1 1R 00 10 6 14

T8 T8 611R 61 10 1G 00 10 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

YORK/BORG WARNER B2CH, B2PS, E1CS, E1EB, E1HB, E2CH, STELLAR 2000 (DIRECT REPLACEMENTS)

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

T T8 8411 41 R1 1R 00 10 2 28

00 10 1R 61 T8

Y Y5 594G 94 14 G1 19 47 6

42 R1 94 Y5

41 T8

Existing Terminals

A1

71

2

5

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Common B

B

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y

Y1

Y1/W1

Compressor

Y

or

Y1

Y1 D

1st Stage Heat Aux. Heat

W

or

H

C/O Valve Heat

Y D

Y1 D

D

D

D

W1

–

W1

W1

W1

W1

W1

W1

W1

–

W2

W2

W2

W2

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

E

G

Fan

Y1

D

A

B

B

B

B

B

B

or

C

O/B

B

B

C

C

O/B

C

O

O

O

O

System Monitor/ System Defrost

X

–

L

–

L

L

L

L

L

L

E

E

E

E

E

E

E

E

E

X

O

C

O/B

O

or

O

or

O/B

O

E

O/B

or

C/O Valve Cool

Em. Heat

O

or

G C

O/B

Mutiple Heat Loads

–

W3

W3

W3

–

–

–

–

–

W2

LED Indication

–

–

X2

X1 X2

–

–

–

–

–

–

A H terminal is not available on all models. B Terminal must be connected to the transformer common. C Configure O/B (select models) in Installer Setup.

E

D Do not remove factory-installed jumper. E Configure W2 cycle rate to NC. M13215

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1274 (2TH11703324) T874G1428/Q674J1027 (6TH11702424) T872G1299/Q672L1177 T874R1046/Q674L1017 (2TH11702224) T872R1032/Q672L1011 T874R1046/Q674L1272 (2TH11702224) T874G1170/Q674J1027 (2TH11702424) T8141A1006 T874G1196/Q674J1027 T8300A1037/Q6300A1044 (2ET11700124A) T874G1345 (2TH11702624) T8611R1018 (025-27655) T874G1402/Q674L1363 (2TH11702824)

70-6627 • 111

YORK/BORG WARNER DIRECT REPLACEMENTS (OUTDOOR THERMISTOR MODELS) B2CH, B2PS, E1CS, E1EB, E1HB, E2CH

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

T T8 8411 41 R1 1R 00 10 2 28

00 10 61 T8

Y5

94

G1

1R

16

3 Y5

94

R1

76

5 55 A1 41 T8

Existing Terminals

1

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Common C

B

B

B

B

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y

Y1

Y E

Y1 E

Y E

Y1

Y1/W1 E

E

1st Stage Heat

–

–

–

–

W1

W1

W1

W1

W1

–

Aux. Heat

W

W

W

W

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

G

G

C/O Valve Heat

H

–

–

–

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

F

F

F

F

L

L

L

L

L

L

Em. Heat

X

X2

X2

X2

E

E

E

E

E

E

Outdoor Thermistor

T

T

T

T

B

B

B

B

B

B

F

A

A

A F and H terminals are not available on all models. B Tape off. Thermostat replaces outdoor reset models with improved zero droop performance. C Terminal must be connected to the transformer common.

or

or

D

O/B

B

B

O

O

D

O/B

or

or

D

O/B D

O/B

D Configure O/B (select models) in Installer Setup. E Do not remove factory-installed jumper. F Configure W2 cycle rate to NC.

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1042/Q672J1021 T874R1145/Q674L1272 T874R1169/Q674L1330 T874R1251/Q674L1272 (2TH11702324) T874R1327/Q674L1272 (6TH11702224)

70-6627 • 112

D

O/B D

O/B

M13216

YORK/BORG WARNER B2CH, B2PS, EICS, EIEB, EIHB, E2CH (ALTERNATE REPLACEMENTS)

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

T T8 8511 51 G1 1G 02 10 1 47

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Y

Y

Y1

or

R1 94 Y5

41 T8

Y1

42

7 Y

A1

21 Compressor

I

I

1st Stage Heat Auxiliary Heat

W

or

Fan

G

C/O Valve Heat

H

C/O Valve Cool

O

System Monitor/ System Defrost

X

–

W1

W1

W2

W2

W2

W2

G

G

B

O

E

X

Multiple Aux. Heat Loads C

–

LED Indication

T X

E

F

G

Y

Y

Y1 I

Y1

Y1/W1 I

I

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

E

W3

W3

–

X2

D

G

X1

E

W1

Y I

W1

L

or EM. Heat

or I

I

W1

L

Y1

W PC8 89 90 00 0/ B1 00 2

T T8 8411 41 R1 1R 00 10 2 28

B

T T8 8611 61 G2 1G 00 20 2 28

T T8 8611 61 R1 1G 00 10 0 04

Common H

T T8 8011 01 R1 1R 00 10 6 14

Existing Terminals

5

Function

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

D

G

W3 K

X2

L

E

E

G

– K

X1 X2 J

L

E

E

G

or

or

L

E

A

O/B

B

B

O

O

A

O/B D

G

L

E

E

G

or

or

L

E

A

O/B

A

O/B

A

O/B D

G

A

O/B

L

E

–

–

–

–

–

–

–

–

X1 X2

–

2nd Stage Compressor

–

–

–

–

–

–

–

–

–

W2

2nd Stage Cool

–

–

–

–

–

–

–

–

–

Y2

A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D LED is energized when terminal is powered. E L terminal is powered continuously in Em. Ht. position. F Tape off. Not used. G Field-installed E to W2 jumper for improved performance in emergency heat.

H I J K L M

B

D

G

B

Terminal must be connected to the transformer common. Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. H terminal is not available on all models. Using these thermostats with a W8045 Demand Defrost Control may cause customer complaints. If replacing a thermostat used on a W8045, see York/Borg Warner Direct Replacements. M13224

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1274 (2TH11703324) T8141A1006 T874G1345 (2TH11702624)1 T872G1299/Q672L1177 1 T8300A1037/Q6300A1044 (2ET11700124A) T874G1402/Q674L1363 (2TH11702824) T872R1032/Q672L1011 1 T8300A1144/Q6300A1044 (6ET11700124A) T874G1428/Q674J1027 (6TH11702424)1 T874G1170/Q674J1027 (2TH11702424) T8611R1018 (025-27655) T874R1046/Q674L1017 (2TH11702224)1 T874G1196/Q674J1027 T874R1046/Q674L1272 (2TH11702224)1

70-6627 • 113

YORK/BORG WARNER

T T8 8611 61 G2 1G 00 20 2 28

T T8 8411 41 R1 1R 00 10 2 28

X

X

X

C

C

C

C

C

C

Power

R

R

R

R

R

R

R

R

R

R

Compressor

Y

Y

Y

Y1

Y5

94

R1

42

2 71 A1 41 T8

G

1st Stage Heat

Y1

G

–

W1

W1

or

Y

Y

G

Y1 G

W1

Y G

W PC8 89 90 00 0/ B1 00 2

X

Existing Terminals

Function

T T8 8011 01 R1 1R 00 10 6 14

T T8 8611 61 R1 1G 00 10 0 04

Common E

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

T T8 8511 51 G1 1G 02 10 1 47

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

Y1/W1

Y1 G

G

W1

W1

W1

W1

– B

Aux. Heat

W2

W2

W2

W2

W2

W2

W2

W2

W2

Aux.

Fan

G

G

G

G

G

G

G

G

G

G

C/O Valve Heat

–

B

B

B

B

B

B

C/O Valve Cool

O

O

O

O

O

O

O

System Monitor/ System Defrost

L

Em. Heat

E

Multiple Aux. Heat Loads C

W3

LED Indication

–

2nd Stage Compressor

D

D

L

J

X1

J

L

K

L

K

or

or

A

O/B

B

B

O

O

A

O/B

L

J

or

or

A

O/B

A

O/B

A

O/B

K

A

O/B

J

L

L

L

E

E

E

E

E

E

E

E

E

W3

W3

W3

F

F

F

F

F

F

–

X2 I

X2 I

–

–

–

X1 X2

–

–

–

–

–

–

–

–

–

–

W2

–

–

–

–

–

–

–

–

–

Y2

D

X1 X2 H

J

B

2nd Stage Cool A Configure O/B (select models) in Installer Setup. B When W2 is not used, configure W2 cycle rate to NC. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D If provided on original equipment. E Terminal must be connected to the transformer common.

F If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. G Do not remove factory-installed jumper. H Optional Check LED on T8611G1004. See Fig. 26. I Field-installed X2 to X (C) jumper. J LED is energized when terminal is powered. K L terminal is powered continuously when thermostat is in Em. Ht. position. M13219

TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1410/Q674F1311(6TH11703024)

70-6627 • 114

YORK/BORG WARNER TYPICAL EBHP SERIES

Common B

W PC8 89 90 00 0/ B1 00 2

T T8 8611 61 G2 1G 00 20 2 28

T T8 8011 01 R1 1R 00 10 6 14

T T8 8511 51 G1 1G 02 10 1 47

X

X

C

C

C

C

C

C

R

R

R

R

R

W1

W1

W1

W1

–

Power

R

R

R

R

1st Stage Heat

W1

W1

W1

W1

Aux. Heat

W2

Fan

G

1st Stage Cool

Y1

C/O Valve Heat

A

NOT AVAILABLE

T T8 8411 41 R1 1R 00 10 2 28

00 10 1R 61 T8

Y Y5 594G 94 14 G1 19 47 6

5 42 R1 94 Y5

Existing Terminals or B X2

AV NO AI T LA BL

E

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

A

A

A

A

A

A F

W2

W2

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

G

Y

Y1

Y1

Y

Y1

Y

Y1

Y1/W1

–

B

B

B

B

B

C/O Valve Cool

–

O

O

O

O

O

System Monitor/ System Defrost

–

L

–

L

L

L

L

L

L

Em. Heat

E

E

E

E

E

E

E

E

E

Multiple Aux. Heat Loads C

–

W3

W3

–

–

–

–

–

–

LED Indication

–

X2 D

X1 X2

–

–

–

–

X1 X2

–

A Remove factory-installed Y1 (Y) to W1 (W) jumper. B Terminal must be connected to the transformer common. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays.

or

or

O/B

B

B

O/B

O

O

or

or

E

O/B

O/B

O/B

O/B

D Field-installed X2 to X (C) jumper. E If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. F Configure W2 cycle rate to NC.

M13220

70-6627 • 115

ZONE AIRE VHP SERIES

C

C

C

C

R

R

R

R

R

R

Y5

94

R1

42

2 A1 41 T8 R

R

R

Compressor

Y

Y

Y

Y1

Y1 G

G

1st Stage Heat

–

–

W1

W1

Aux. Heat

W2

W2

W2

W2

Fan

G

G

G

B

O

or

W1

or

Y

Y

G

Y1

G

W1

W1

W1

–

W2

W2

W2

W2

W2

Aux.

G

G

G

G

G

G

G

B

B

B

B

B

O

O

O

O

O

–

System Monitor/ System Defrost

L

Em. Heat

E

E

E

E

Multiple Aux. Heat Loads C

W3

W3

W3

W3

LED Indication

X2

–

X2 F

2nd Stage Compressor

–

–

–

–

2nd Stage Cool

–

–

–

–

L

J

L

X1 X2

B

A Configure O/B (select models) in Installer Setup. B Optional LED indication activated with completed circuit on X1 and X2 terminals. C Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. D Terminal must be connected to the transformer common. E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

or

or

A

O/B

K

K

B

B

O

O

A

O/B J

K

or

A

O/B

A

A

O/B J

A

O/B

E

E

E

E

E

E

E

E

E

E

E

E

–

–

–

X1 X2

–

–

–

–

–

W2

–

–

–

–

–

Y2

F G H I J K

H

L

B

I

O/B

L

X1 X2

L

or

L

L

J

– I

Field-installed X2 to X (C) jumper. Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position.

TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBER T874R1129/Q674L1181 T874N1024/Q674F1261

70-6627 • 116

Y1/W1

Y1 G

W1

C/O Valve Cool

W1

Y G

G

W PC8 89 90 00 0/ B1 00 2

C

R

B

T T8 8611 61 G2 1G 00 20 2 28

C

T T8 8011 01 R1 1R 00 10 6 14

X

Power

C/O Valve Heat

T T8 8511 51 G1 1G 02 10 1 47

X

71 Common 4

Existing Terminals or X1 X

T T8 8411 41 R1 1R 00 10 2 28

T T8 8611 61 R1 1G 00 10 0 04

X

5

Y Y5 594G 94 14 G1 19 47 6

Electromechanical

Function

Electronic Replacement or Upgrade Chronotherm IV

Chronotherm® III

M13221

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Index Subject/Manufacturer

Page Number

Amana .....................................................................................................................................................................

36

Addison ...................................................................................................................................................................

103

Air-Ease ..................................................................................................................................................................

38

American Stabilis ....................................................................................................................................................

37

American Standard ................................................................................................................................................. 97-100 Application Tips .......................................................................................................................................................

33

Arcoaire ...................................................................................................................................................................

39

Armstrong ............................................................................................................................................................... Bard ........................................................................................................................................................................

38 40

Borg Warner ............................................................................................................................................................ 111-115 Bryant-Day/Night-Payne .........................................................................................................................................

41

Carrier .....................................................................................................................................................................

42-45

Coleman ..................................................................................................................................................................

50-53

Comfort Air ..............................................................................................................................................................

60

Comfortmaker .........................................................................................................................................................

39

Crispaire ..................................................................................................................................................................

46

Econar .....................................................................................................................................................................

47-48

Enerstat ...................................................................................................................................................................

49

Evcon ......................................................................................................................................................................

50-53

Fedders ...................................................................................................................................................................

54

Florida Heat Pump ..................................................................................................................................................

55

Fraser Johnston ......................................................................................................................................................

82

Friedrich ..................................................................................................................................................................

56

General Electric ...................................................................................................................................................... Geo System ............................................................................................................................................................

57-58

Heat Controller ........................................................................................................................................................

60

Heatwave ................................................................................................................................................................

61

Heil Quaker ............................................................................................................................................................. Hookup Diagrams ...................................................................................................................................................

15-25

59

68-69

Honeywell ............................................................................................................................................................... InterCity Products ...................................................................................................................................................

62-67 68-69

Intertherm ................................................................................................................................................................

70-72

Janitrol .................................................................................................................................................................... Keeprite ...................................................................................................................................................................

73

Lennox ....................................................................................................................................................................

75-81

Luxaire ....................................................................................................................................................................

82

74

Index ....................................................................................................................................................................... 117-119

70-6627 • 117

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Subject/Manufacturer

Page Number

Magic Chef ..............................................................................................................................................................

83-84

Mammoth ................................................................................................................................................................

85-87

Martin Industries ..................................................................................................................................................... Marvair ....................................................................................................................................................................

88

Miller ....................................................................................................................................................................... Moncrief ..................................................................................................................................................................

70-72

Nordyne .................................................................................................................................................................. Payne ......................................................................................................................................................................

70-72

Phillips Energy ........................................................................................................................................................

89

Rheem .................................................................................................................................................................... Ruud .......................................................................................................................................................................

90-91

Seco ........................................................................................................................................................................

92-93

Snyder General .......................................................................................................................................................

39

Southwest Mfg. .......................................................................................................................................................

61

Square D .................................................................................................................................................................

95-96

Sun Dial .................................................................................................................................................................. Sun Manufacturing ..................................................................................................................................................

95-96

Symbols ..................................................................................................................................................................

13

46 82 41

90-91

94

Tappan ....................................................................................................................................................................

73

Tempstar .................................................................................................................................................................

68-69

Thermostat Manufacturer Cross Reference ............................................................................................................

29-32

Tips for Using This Heat Pump Cross Reference ...................................................................................................

33

Trane ....................................................................................................................................................................... 97-100 Weatherking ............................................................................................................................................................ 101-102 Wesco .....................................................................................................................................................................

103

Westinghouse ......................................................................................................................................................... 104-107 Whirlpool .................................................................................................................................................................

68-69

White Rodgers ........................................................................................................................................................

108

Williamson ............................................................................................................................................................... 109-110 York ......................................................................................................................................................................... 111-115 ZoneAire ................................................................................................................................................................. Wiring Connections for Honeywell Heat Pump Thermostats ..................................................................................

70-6627 • 118

116 34-35

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE

Index to Figure Diagrams Figure Number Fig. 1

Page Number Using the T8611M on two-speed heat pump compressor equipment. .................................... 6

Fig. 2

Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover.

8

Fig. 3

Installing an R8222B Switching Relay on heat pumps requiring cooling mode changeover. ...................................................................................................................

8

Fig. 4

Changing fan operation in emergency heat mode for electronic thermostats. ........................

9

Fig. 5

Relay wiring connections for Carrier equipment (typical 38BQ), and T8511M, T8611M, PC8900/W8900B1002. Require relay (R8222B1067 typically) for proper operation. ..............

9

Fig. 6

Fig. 14

Relay wiring connections for Evcon/Coleman equipment (3200, 3300). Requires R8222B1067 Relay to operate system. Equipment requires normaly energized emergency heat. ...................................................................................................................... Relay wiring connections for Evcon/Coleman equipment (3200, 3300, 3360, 3400, 6000, and 6500). Requires R8222B1067 Relay to operate system. Equipment requires normally energized emergency heat. ...................................................................................... Relay wiring connections for Lennox equipment (HP9, HP10). Requires R822B1067 Relay to operate the system monitor light (emergency heat LED) on TRADELINE replacement thermostats. Tape off if light is not desired. ........................................................ Relay wiring connections for Lennox equipment (HP16, HP19, HP21, HP22 Direct Replacements). Requires R8222B1067 Relay to operate the system monitor light (emergency heat LED) on TRADELINE replacement thermostats. Tape off if light is not desired. .......................................................................................................................... Relay wiring connections for Magic Chef equipment (PE Series). Requires R8222B1067 Relay if outdoor section heas reset shunt relay and malfunction light indicator is desired on thermostat. ............................................................................................................. Relay wiring connections for Mammoth. Requires R8222B1067 Relay if outdoor section has reset shunt relay and malfunction light indicator is desired on thermostat ....................... Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a heating changeover. ................................................................... Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a cooling changeover. .................................................................... Key to hookup symbols. ..........................................................................................................

Fig. 15

NEMA Class 2 transformer band. ............................................................................................ 14

Fig. 7

Fig. 8

Fig. 9

Fig. 10

Fig. 11 Fig. 12 Fig. 13

10

10

10

11

11 11 12 12 13

Wiring Diagrams Fig. 16

Internal schematic and typical wiring diagram for T841A1308. ............................................... 15

Fig. 17

Internal schematic and typical wiring diagram for T841A1555. ............................................... 16

Fig. 18

Internal schematic and typical wiring diagram for T841A1712 and T841A1738. .................... 16 Internal schematic and typical wiring diagram for T841B1000. ............................................... 17

Fig. 19 Fig. 20 Fig. 21

Internal schematic and typical wiring diagram for Y594G1161. .............................................. 17 Internal schematic and typical wiring diagram for Y594G1633. .............................................. 18

Fig. 22

Internal schematic and typical wiring diagram for Y594G1419 and Y594G1476. ................... 18

Fig. 23 Fig. 24

Internal schematic and typical wiring diagram for Y594G1763. .............................................. 19 Internal schematic and typical wiring diagram for Y594R1797. ............................................... 19

Fig. 25

Internal schematic and typical wiring diagram for Y594R1425. ............................................... 20

Fig. 26

Internal schematic and typical wiring diagram for T8611G1004 and T8611G1103. ................ 21

Fig. 27 Fig. 28

Typical wiring diagram for T8611M7008. ................................................................................ 22 Typical wiring diagram for T8611R1000. ................................................................................. 23

Fig. 29

Typical wiring diagram for T8011R and T8411R. .................................................................... 23

Fig. 30

Typical wiring diagram for T8511G. ......................................................................................... 24

Fig. 31

Typical wiring diagram for T8611G2002 and T8611G2028. .................................................... 25

70-6627 • 119

70-6627 • 120

Home and Building Control Honeywell Inc. Honeywell Plaza P.O. 524 Minneapolis, MN 55408-0524

Home and Building Control Honeywell Limied — Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 3N7

70-6627 Rev. 12-98 ©Honeywell Inc. 1998 All rights reserved

Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.

www.honeywell.com