40MFC / 38MFC 40MFQ / 38MFQ High---Wall Ductless Split System Sizes 009 to 022

Service Manual TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 MODEL / SERIAL NUMBER NOMENCLATURE . . . . . . . . . 2 STANDARD FEATURES AND ACCESSORIES . . . . . . . . . . . 3 SPECIFICATIONS -- COOLING ONLY (MFC) . . . . . . . . . . . . 4 SPECIFICATIONS -- HEAT PUMP UNITS (MFQ) . . . . . . . . . 5 DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SERVICE VALVE LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . 6 CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SYSTEM OPERATING ENVELOPE . . . . . . . . . . . . . . . . . . . . 8 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CONNECTION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 9 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 REFRIGERATION CYCLE DIAGRAM . . . . . . . . . . . . . . . . . 14 REFRIGERANT LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 SYSTEM EVACUATION AND CHARGING . . . . . . . . . . . . . 15 CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SYSTEM SAFETIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 17 MODES OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

WARNING

!

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.

!

EXPLOSION HAZARD Failure to follow this warning could result in death, serious personal injury, and/or property damage. Never use air or gases containing oxygen for leak testing or operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to an explosion.

SAFETY CONSIDERATIONS Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start--up, and service this equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be performed by trained service personnel. When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment. Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky equipment. Read this manual thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. This is the safety--alert symbol !! . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in

WARNING

!

CAUTION

EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length is buried, refrigerant may migrate to the cooler buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start--up.

INTRODUCTION This Service Manual provides the necessary information to service, repair, and maintain the 38--40MF family of Puron air conditioners and heat pumps. Section 2 of this manual is an appendix with data required to perform troubleshooting. Use the Table of Contents to locate a desired topic.

MODEL / SERIAL NUMBER NOMENCLATURES

INDOOR UNIT 40

MFC

009

--- --- ---

1 Voltage 1 --- 115 ---1 ---60 3 --- 208 ---230 ---1 ---60

40= Fan Coil Unit Nominal Capacity 009 --- 3/4 Ton 012 --- 1 Ton 017 --- 1 ---3/7 Ton (HP) 018 --- 1 ---1/2 Ton (AC) 022 --- 1 ---5/6 Tons

Unit Type MFC --- Cooling Only MFQ --- Heat Pump

OUTDOOR UNIT 38

MFC

009

--- --- ---

1 Voltage 1--- 115 ---1 ---60 3--- 208 ---230 ---1 ---60

38 = Air ---Cooled Condenser Nominal Capacity 009 --- 3/4 Ton 012 --- 1 Ton 017 --- 1 ---3/7 Ton (HP) 018 --- 1 ---1/2 Ton (AC) 022 --- 1 ---5/6 Tons

Unit Type MFC --- Cooling Only MFQ --- Heat Pump

01

06

V

00001

Week of Manufacture

Serial Number

Manufacturing Site

Year of Manufacture

Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org.

2

STANDARD FEATURES AND ACCESSORIES Ease Of Installation Mounting Brackets Low Voltage Controls Comfort Features Microprocessor Controls Wired Remote Control Wireless Remote Control Automatic Horizontal Air Sweep Air Direction Control Auto Restart Function Cold Blow Protection On Heat Pumps Freeze Protection Mode On Heat Pumps Turbo Mode Silence Mode Auto Changeover On Heat Pumps Energy Saving Features Sleep Mode Stop/Start Timer Safety And Reliability 3 Minute Time Delay For Compressor Over Current Protection For Compressor Indoor Coil Freeze Protection Indoor Coil High Temp Protection in Heating Mode Condenser High Temp Protection in Cooling Mode Ease Of Service And Maintenance Cleanable Filters Diagnostics Liquid Line Pressure Taps Application Flexibility Condensate Pumps Crankcase Heater Legend S Standard A Accessory

S S S A S S S S S S S S S S S S S S S S S S S A S

INDOOR UNITS

A07892

Fig. 1 – Condensate Pump Accessory On high wall fan coils, the condensate pump has a lift capability of 12 ft (3.6 m) on the discharge side with the pump mounted in the fan coil or 6 ft (1.8 m) on the suction side if the pump is remote mounted. The pump is recommended when adequate drain line pitch cannot be provided, or when the condensate must move up to exit. NOTE: An external 115v power source will be required to run the pump on unit sizes 9k and 12k.

OUTDOOR UNITS Crankcase Heater Standard on all unit sizes. Heater clamps around compressor oil stump.

3

SPECIFICATIONS -- COOLING ONLY UNITS (MFC SERIES) System Size (KBTU/Hr) Outdoor Model Indoor Model AHRI Performance Ratings* Cooling Rated Capacity Btu/h Cooling Cap. Range Min - Max Btu/h SEER EER Operating Range Cooling Outdoor DB Min - Max °F Cooling Indoor DB Min -Max °F Controls Wireless (°C, °F, Convertible) Wired (°C, °F, Convertible) Electrical System Voltage-PH-Hz Control Voltage Power Supply Outdoor - MCA Outdoor - Fuse Rating (MOCP) Outdoor Motor Rpm/CFM Diameter (in) ... No. of Blades Motor (hp) Capacitor (µF) / voltage Indoor Motor Motor Watts/ HP Rpm/CFM (High) Rpm/CFM (Medium) Rpm/CFM (Low) Blower Diameter / Length (in) Capacitor (µF) Refrigerant Refrigerant Type Design Pressure (PSIG) Metering Device Charge (lb) Refrigerant Lines Connection Type Pipe Connection Size - Liquid (In) OD Pipe Connection Size - Suction (In) OD Condensate Drain OD / ID (in) Maximum Piping Length (ft) Max Lift (Fan Coil Above) (ft) Max Drop (Fan Coil Below) (ft) Compressor Type Model Oil Charge (POE –oz (g)) Capacitor Rated Current (RLA) Locked Rotor Amp (LRA) Outdoor Coil Face Area (sq. ft.) No. Rows Fins per inch Circuits Indoor Coil Face Area (sq. ft.) No. Rows Fins per inch Circuits Dimensions - Outdoor Dimensions (W X H X D) In Net Weight (lbs.) Dimensions - Indoor Dimensions (W X H X D) In Net Weight (lbs.)

09 38MFC009---1 40MFC009---1

12 38MFC012---1 40MFC012---1

38MFC012---3 40MFC012---3

9,000 4,000-10,000

12,000 4,500-13,000

10

9

18 38MFC018---3 40MFC018---3

22 38MFC022---3 40MFC022---3

18,000 5,500-19,000

22,000 6,500-24,000

8.5

10

15

14 - 115 63 - 90 Standard - Convertible Optional: KSACN0101CAC 115 -1 -60

208-230-1-60 0-15V DC Indoor unit powered from outdoor unit 19 10 14 30 15 20

19 30 1000 / 945

940 / 945

860 / 1050 16.7 … 3 0.68

15.8 … 3 0.31 6 / 250V 15 / 0.02 1200 / 192 1050 / 160 900 / 131

0.33 2.5 / 400 - 450v 15 / 0.02 1200 / 230 1050 / 194 900 / 158 3.7 / 21.3

930 / 1390 18.3 … 3 0.72 2.5 / 450v

20 / 0.027 1200 / 232 1050 / 193 900 / 157

3

16 25

28 / 0.038 1200 / 348 1050 / 294 900 / 236 3.9 / 28.7

45 / 0.061 1200 / 547 1050 / 458 900 / 368 4.2 / 30.7 3

1.5 R410A 550 Capillary Tube in Outdoor Unit 1.43 1.87

1.34

2.60

Flare 1/4 3/8

3/8 5/8

1/2 0.65 / 0.63 65

98

25 25

30 30

Rotary DA108X1C-20FZ3 16.9 (480) 45µF / 250VAC 6µF / 450VAC 5.3 10 4.10 1

DA130M1C-31FZ

DA150S1C-20FZ 17.6 (500) None

3.95 14

6.10 1.5

9.7 17

7.67

11.16 2

21 2

4

2.53

2.98 1/2

20

1.61

5.29 2

4

5

21 2

58.4

35.8 x 23 x 13.2 61.7

34.9 x 25.4 x 14 76.0

38.0 x 29.7 x 15.6 98.1

26.8 x 10.0 x 7.0 15.4

30.3 x 10.0 x 7.4 16.5

35.6 x 10.8 x 7.8 19.8

40.6 x 12.4 x 8.6 26.4

*Air Conditioning, Heating & Refrigeration Institute --- Ratings are net values reflecting the effects of circulating fan heat. Ratings are based on: Cooling Standard: 80_F (26.67_C) db, 67_F (19.44_C) wb air entering indoor unit and 95_F (35_C) db air entering outdoor unit. High Temperature Heating Standard: 70_F (21.11_C) db air entering indoor unit and 47_F (8.33_C) db, 43_F (6.11_C) wb air entering outdoor unit. --- Ratings are based on 25 ft. (7.62 m) of interconnecting refrigerant lines. --- All system ratings are based on fan coil units operating at high fan speed. Consult Specification tables for airflows at all available fan speeds.

Legend SEER --EER --MCA --MOCP ---

4

Seasonal Energy Efficiency Ratio Energy Efficiency Ratio Minimum Circuit Amps Max. Over--- Current Protection

SPECIFICATIONS -- HEAT PUMP UNITS (MFQ SERIES) System Size (KBTU/Hr) Outdoor Model Indoor Model AHRI Performance Ratings* Cooling Rated Capacity Btu/h Cooling Cap. Range Min - Max Btu/h SEER EER Heating Rated Capacity Btu/h Heating Cap. Range Min - Max Btu/h HSPF COP Btuh, W Operating Range Cooling Outdoor DB Min - Max °F Heating Outdoor DB Min - Max °F Cooling Indoor DB Min - Max °F Heating Indoor DB Min - Max °F Controls Wireless (°C, °F, Convertible) Wired (°C, °F, Convertible) Electrical System Voltage-PH-Hz Control Voltage Power Supply Outdoor - MCA Outdoor - Fuse Rating (MOCP) Outdoor Motor Rpm/CFM Diameter (in) ... No. of Blades Motor (hp) Capacitor (µF) Indoor Motor Motor Watts/ HP Rpm/CFM (High) Rpm/CFM (Medium) Rpm/CFM (Low) Blower Diameter / Length (in) Capacitor (µF) Refrigerant Refrigerant Type Design Pressure (PSIG) Metering Device Charge (lb) Refrigerant Lines Connection Type Pipe Connection Size - Liquid (In) OD Pipe Connection Size - Suction (In) OD Condensate Drain OD / ID (in) Maximum Piping Length (ft) Max Lift (Fan Coil Above) (ft) Max Drop (Fan Coil Below) (ft) Compressor Type Model Oil Charge (POE –oz (g)) Capacitor Rated Load Amps (RLA) Locked Rotor Amp (LRA) Outdoor Coil Face Area (sq. ft.) No. Rows Fins per inch Circuits Indoor Coil Face Area (sq. ft.) No. Rows Fins per inch Circuits Dimensions - Outdoor Dimensions (W X H X D) In Net Weight (lbs.) Dimensions - Indoor Dimensions (W X H X D) In Net Weight (lbs.)

09 38MFQ009---1 40MFQ009---1

12 38MFQ012---1 40MFQ012---1

38MFQ012---3 40MFQ012---3

9,000 4,000-10,000

12,000 4,500-13,000

10.5 9,000 4,000-10,500

10 12,000 4,500-13,000

17 38MFQ017---3 40MFQ017---3

22 38MFQ022---3 40MFQ022---3

17,000 5,500-19,000

22,000 6,500-24,000

9 18,000 5,500-19,500

9.5 22,000 6,500-24,500

15

8.2 8.0

8.1

9.7

14 - 115 5 - 75 63 - 90 32 - 86 Standard - Convertible Optional: KSACN0101CAC 115 -1 -60

208-230-1-60 0-15V DC Indoor unit powered from outdoor unit 10 14 15 20

19 30 1000 / 945 15.8 … 3 0.31 6 15 / 0.02 1200 / 192 1050 / 160 900 / 131

940 / 945 0.33 2.5

15 / 0.02 1200 / 230 1050 / 194 900 / 158 3.7 / 21.3

20 / 0.027 1200 / 232 1050 / 193 900 / 157

3

16 25

860 / 1050 16.7 … 3 0.68

930 / 1390 18.3 … 3 0.72

28 / 0.038 1200 / 348 1050 / 294 900 / 236 3.9 / 28.7

45 / 0.061 1200 / 547 1050 / 458 900 / 368 4.2 / 30.7 3

1.5 R410A 550 Capillary Tube in Outdoor Unit 2.6

2.87

3.52

Flare 1/4 3/8

3/8 5/8

1/2 0.65 / 0.63 65

98

25 25

30 30

Rotary DA108X1C-20FZ3 16.9 (480) 45µF / 250VAC 6µF / 450VAC 5.3 10

DA130M1C-31FZ

3.95 14

8.19

DA150S1C-20FZ 17.6 (500) None 9.7 17

7.81

11

2 17 3

18 4

2.53

2.98 1/2

1.61

5.29 2

2

4

5

35.8 x 23 x 13.2 70.5

34.9 x 25.4 x 14 82.7

38.0 x 29.7 x 15.6 103.6

35.6 x 10.8 x 7.8 19.8

40.6 x 12.4 x 8.6 26.4

20

21

26.8 x 10.0 x 7.0 15.4

*Air Conditioning, Heating & Refrigeration Institute --- Ratings are net values reflecting the effects of circulating fan heat. Ratings are based on: Cooling Standard: 80_F (26.67_C) db, 67_F (19.44_C) wb air entering indoor unit and 95_F (35_C) db air entering outdoor unit. High Temperature Heating Standard: 70_F (21.11_C) db air entering indoor unit and 47_F (8.33_C) db, 43_F (6.11_C) wb air entering outdoor unit. --- Ratings are based on 25 ft. (7.62 m) of interconnecting refrigerant lines. --- All system ratings are based on fan coil units operating at high fan speed. Consult Specification tables for airflows at all available fan speeds.

30.3 x 10.0 x 7.4 16.5 Legend SEER --EER --HSPF --COP --MCA --MOCP ---

5

Seasonal Energy Efficiency Ratio Energy Efficiency Ratio Heating Seasonal Performance Factor Coefficient of Performance Minimum Circuit Amps Max. Over--- Current Protection

DIMENSIONS -- INDOOR

A14343

Unit Size

W in (mm)

D in (mm)

H in (mm)

9K

26.8 (680)

7.0 (178)

10.0 (255)

Operating Weight lb (kg) 15.4 (7)

12K

30.3 (770)

7.4 (188)

10.0 (255)

16.5 (7.5)

17K HP / 18K AC

35.6 (905)

7.8 (198)

10.8 (275)

19.8 (9)

22K

40.6 (1030)

8.6 (218)

12.4 (315)

26.4 (12)

DIMENSIONS - OUTDOOR

L2

D

L1

A14344

Model

W in (mm)

D in (mm)

H in (mm)

L1 in (mm)

L2 in (mm)

9K/12K 17K HP / 18K AC 22K

30.7 (780) 29.9 (760) 33.3 (845)

9.8 (250) 11.2 (285) 12.6 (320)

21.2 (540) 23.2 (590) 27.6 (700)

21.6 (549) 20.9 (530) 22.1 (560)

10.9 (276) 11.4 (290) 13.2 (335)

Operating Weight lb (kg) 70.5 (32.0) 82.7 (37.5) 103.6 (47.0)

SERVICE VALVE LOCATIONS 22K

17/18K

9/12K

K

J

K

J

J

K

A14408

Service Valve Locations J K

9K in. (mm) 4.37 (111) 4.61 (117)

12K in. (mm) 4.37 (111) 4.61 (117)

6

18K in. (mm) 4.09 (104) 6.34 (161)

22K in. (mm) 4.13 (105) 4.13 (105)

CLEARANCES -- INDOOR

CEILING 6" (0.15m) min. 5" (0.13m) min.

5" (0.13m) min.

6' (1.8m)

FLOOR A07891

Fig. 2 – Indoor Unit Clearance

CLEARANCES - OUTDOOR

A

Air-inlet E

D

B

C

Air-outlet A07894

Minimum Value in. (mm) 24 (610) 24 (610) 80 (2032) 12 (305) 24 (610)

UNIT A B C D E

Fig. 3 – Outdoor Unit Clearance

7

SYSTEM OPERATING ENVELOPE -23

-18

-13

-8

-3

2

Outdoor Temperature (°C) 12 17 22 27

7

32

37

42

47

52

57

120

49

110

44

39

100

Indoor Temperature (°F)

5°F

34

115 °F 90°F

75°F 86°F

29

80

Cooling Connuous Operaon

24

70 19 63 °F

Indoor Temperature (°C)

14°F 90

60 14 50

9

Heang Connuous Operaon 40

4 32°F

30 -10

0

10

20

30

40

50

60

70

80

-1 90

100

110

120

130

140

Outdoor Temperature (°F)

NOTE: If the system operates beyond the conditions presented in this envelope, certain safety protection features may operate and cause the system to operate abnormally. Optimum performance will be achieved during this operating temperature envelope. A14466

Fig. 4 – System Operating Envelope

ELECTRICAL DATA OPER. UNIT SIZE 9K 12K

VOLTAGE

COMPRESSOR

018K (AC) 22K

INDOOR FAN MCA

MAX FUSE CB AMP

15

19

30

0.027

20

10

15

0.038

28

14

20

0.061

45

16

25

MAX / MIN*

RLA

LRA

V --- PH--- HZ

FLA

HP

W

V --- PH--- HZ

FLA

HP

W

127 / 104

115--- 1---60

5.3

10

115---1---60

0.7

0.31

23

115---1---60

0.3

0.020

5.3

10

0.3

0.33

24

0.2

253 / 187

208---230---1---60

3.95

14

0.6

0.68

50

0.3

9.7

17

0.6

0.72

53

0.4

12K 017K (HP)

OUTDOOR FAN

V --- PH--- HZ

208---230---1---60

*Permissible limits of the voltage range at which the unit will operate satisfactorily LEGEND FLA --- Full Load Amps LRA --- Locked Rotor Amps MCA --- Minimum Circuit Amps RLA --- Rated Load Amps

8

208---230---1---60

WIRING Recommended Connection Method for Power and Communication Wiring (To minimize communication wiring interference) Power Wiring: The main power is supplied to the outdoor unit. The field supplied connecting cable from the outdoor unit to indoor unit consists of three (3) wires and provides the power for the indoor unit. Two wires are high voltage AC power and one is a ground wire. Consult your local building codes and the NEC (National Electrical Code) or CEC (Canadian Electrical Code) for special requirements. All wires must be sized per NEC or CEC and local codes. Use Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively. Per caution note, only copper conductors with a minimum 300 volt rating and 2/64--inch thick insulation must be used. Communication Wiring: A separate shielded copper conductor only, with a minimum 300 volt rating and 2/64--inch thick insulation, must be used as the communication wire from the outdoor unit to the indoor unit. To minimize voltage drop of the control wire, use the following wire size and maximum lengths shown in the chart below:

Consult your local building codes and the NEC (National Electrical Code) or CEC (Canadian Electrical Code) for special requirements. All power wires must be sized per NEC or CEC and local codes. Use Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively. Per caution note, only copper conductors with a minimum 300 volt rating and 2/64--inch thick insulation must be used.

EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. S Wires should be sized based on NEC and local codes. S Use copper conductors only with a minimum 300 volt rating and 2/64 inch thick insulation.

18 AWG 16 AWG

Alternate Connection Method for Power and Communication Wiring (May not prevent communication wiring interference) The main power is supplied to the outdoor unit. The field supplied connecting cable from the outdoor unit to indoor unit consists of four (4) wires and provides the power and communication signals for the indoor unit. Two conductors are for power wiring (L1/L2, or L/N), one is a ground wire, and one is a DC communication wire.

CAUTION

!

EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. S Be sure to comply with local codes while running wire from indoor unit to outdoor unit. S Every wire must be connected firmly. Loose wiring may cause terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. S No wire should be allowed to touch refrigerant tubing, compressor or any moving parts. S Disconnecting means must be provided and shall be located within sight and readily accessible from the air conditioner. S Connecting cable with conduit shall be routed through hole in the conduit panel.

Length ft (m) 50 (15) 50 (15) to 100 (30)

Wire Size

CAUTION

!

The main power is supplied to the outdoor unit. the field supplied connecting cable from the outdoor unit to indoor unit consists of four wires and provides the power for the indoor unit as well as the communication signal between the outdoor unit and indoor unit. Two wires are high voltage AC power (L1 and L2), one is a ground wire, and one is a DC communication wire.

CONNECTION DIAGRAMS 115-1-60 FIELD POWER SUPPLY

CONNECTING CABLE OUTDOOR TO INDOOR

208-230-1-60 FIELD POWER SUPPLY

CONNECTING CABLE OUTDOOR TO INDOOR

GND

GND

1(L)

L

N

Indoor Unit Power Supply 115-1-60

S Indoor Signal High Voltage

GND

Ground

9K and 12k 115v INDOOR UNIT

2(N)

Power to Indoor Unit 115-1-60

S Indoor Signal High Voltage

L

N

Main Power Supply 115-1-60

9K and 12k 115v OUTDOOR UNIT

L1

L1

L2

Indoor Unit Power Supply

115-1-60

S Indoor Signal High Voltage

GND

Ground

12K to 22K 208-230V INDOOR UNIT

L2

Power to Indoor Unit 208-230-1-30

S Indoor Signal High Voltage

L1 L2 Main Power Supply 208-230-1-30

12K to 22K 208-230V OUTDOOR UNIT

Notes: 1. Do not use thermostat wire for any connection between indoor and outdoor units. 2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.

Fig. 5 – Connection Diagrams

9

A14506

10

BLACK

RED

BLUE

L-B(CN36)

N-B

BLUE

CS

L2

CN16

BLACK BLACK

L-A(CN37)

U V W

OUTDOOR WIRING DIAGRAM

Y/G

U V W

2020375A5475

WIRING DIAGRAMS

RED

CN9

REACTOR

RED

CN8

4

N-A

RY3

CN15

Y/G

L N S GND

Y/G

N

Power Input

Y/G N L

Dashed frame parts only for heat pump model.

HEATER, T CRANKCASE

L N S

CO DE L_IN CN11 CN16 CN6 CN4 CN5 P_1 CN8 CN9 CN10A CN1 CN14 CN15 CN16 CN10 CN19 CN33 CN34 CN26,CN28 CN4 CN5 CN6 CN7 CN8,CN9 CN36,CN37 N- B CN17 UV W

GND

YE LL OW

P_1

L_IN

6

4

3 Optional

CN5

5

M

CN10A

CN9

CN8

INDOOR WIRING DIAGRAM

CN16

CN11

CN 2

3(2)

M

~

8

DISPLAY BOARD

P ART NAME FireWire L input terminal Zero line N input terminal Internal and external communication line interface Indoor fan interface Fan feedback interface Stepper motor interface Ground interface Room temperature sensor interface Pipe temperature sensor interface Display interface Electronic expansion valve interface Compressor top temperature sensor (optional) Exhaust temperature sensor Outdoor temperature & amp; condenser pipe temperature sensor DC fan output port (no) AC fan output port Electric heating wire line N Electric heating wire line L Four way valve control port Power L input terminal Power N input terminal Ground wire Communication line Reactor connected line port PFC capacitor connected line port Power L input terminal Test panel interface Compressor connection port

Fig. 6 – Wiring Diagram 38/40MFC/MFQ009 / 38/40MFC/MFQ012 (115V)

5

CN10(CN19)

CN6

BROWN

BLUE

CN4

YELLOW

CN7

BLACK RED

CN5

CN26

CN28

CN33

CN34

RED

2020325B3267 FAN C APAC ITOR BOARD

11

BLACK

RED

BLUE

CN2

BLACK

BLACK

U V W

CN3

OUTDOOR WIRING DIAGRAM

Y/G

U V W

20 20 37 5A54 77

B

L2 CS

BLACK

BLACK

BLUE

CN16

WHITE

WIRING DIAGRAMS (CONT.)

4

N-A

RY3

CN15

CN6

WHITE

5 Y/G

L N S GND

Power Input

Y/G N L

Dashed frame parts only for heat pump model.

HEATER, T CRANKCASE

L1 L2 S

CO DE L_IN CN11 CN16 CN6 CN4 CN5 P_1 CN8 CN9 CN10A CN14 CN15 CN16 CN26,CN28 CN10 CN32,CN34 CN31,CN33 CN4 CN5 CN6 CN7 N- B CN2,CN3 CN17 UV W

GND

YE LL OW

RED

2020328A7163

Fig. 7 – Wiring Diagram 38/40MFC/MFQ012 (208--230V)

Y/G

BROWN

BLUE

CN4

YELLOW

CN7

BLACK RED

CN5

CN26

CN28

CN33

CN34

CN10

L_IN

3 Optional

CN5

5

CN10A

CN9

CN8

INDOOR WIRING DIAGRAM

CN16

CN11

CN2

~

M

8

DISPLAY BOARD

P ART NAME FireWire L input terminal Zero line N input terminal Internal and external communication line interface Indoor fan interface Fan feedback interface Stepper motor interface Ground interface Room temperature sensor interface Pipe temperature sensor interface Display interface Compressor top temperature sensor (optional) Exhaust temperature sensor Outdoor temperature & condenser pipe temperature sensor Four way valve control port AC fan output port Electric heating wire line N Electric heating wire line L Power L input terminal Power N input terminal Ground wire Communication line Power L input terminal Reactor connected line port Test panel interface Compressor connection port

P_1

3(2)

M

12

BLACK

RED

BLUE

U V W

CN 103

CN 102

BLACK

CN11

REACTOR

BLACK

CN22

L2 CS

AMBIENT HEAT EXCHANGER SENSOR SENSOR (BLACK) DISCHARGE SENSOR (WHITE)

OUTDOOR WIRING DIAGRAM

Y/G

U V W

2020378A3515

WIRING DIAGRAMS (CONT.)

BROWN

CN 13

Y/G

L N S GND

Power Input

Y/G N L

Dashed frame parts only for heat pump model.

HEATER, CRANKCASE T

L1 L2 S

CO DE L_IN CN11 CN16 CN6 CN4 CN5 P_1 CN8 CN9 CN10A CN101 CN102 CN103 CN8,CN9 CN10 CN4 CN7 CN13 CN12 CN14 CN15 N- B CN11,CN22 UV W

GND

YE LL OW

RED

Fig. 8 – Wiring Diagram 38/40MFC018 -- 38/40MFQ017 (208--230V)

OUTDOOR FAN

5(3)

CN10(CN10A)

Y/G

BLUE

CN 14

YELLOW

CN 12

BLACK RED

CN 15

CN 9

CN 8

CN 7

CN 4

2020328A7163

L_IN

3 Optional

CN5

5

CN10A

CN9

CN8

INDOOR WIRING DIAGRAM

CN16

CN11

CN2

~

M

8

DISPLAY BOARD

P ART NAME FireWire L input terminal Zero line N input terminal Internal and external communication line interface Indoor fan interface Fan feedback interface Stepper motor interface Ground interface Room temperature sensor interface Pipe temperature sensor interface Display interface Compressor top temperature sensor (optional) Exhaust temperature sensor Outdoor temperature & condenser pipe temperature sensor Four way valve control port AC fan output port Electric heating wire line N Electric heating wire line L Power L input terminal Power N input terminal Ground wire Communication line Power L input terminal Reactor connected line port Compressor connection port

P_1

3(2)

M

13

OUTDOOR WIRING DIAGRAM

WIRING DIAGRAMS (CONT.)

L-OUT

Dashed frame parts only for heat pump model.

CS

20 20 37 9A41 84

HEATER, C RANKC ASE

Y/G

RED

Y/G N L

Power Input

BLUE

BLACK YELLOW

L N S GND

RED

Fig. 9 – Wiring Diagram 38/40MFC(Q)022 (208--230V)

Y/G

CN30

S

YELLOW YELLOW

L1 L2 S

CO DE L_IN CN11 CN16 CN6 CN4 CN5 P_1 CN8 CN9 CN10A CN12 CN7 CN17 CN1,CN2 CN11,CN22 CN10,CN13 CN5 CN6 CN3 CN4 P1 CN15 N- OUT1 RY2 POWER CN26 CN4 CN5 CN2 CN3 CN11 CN12 CN1 CN6 UV W

GND

YE LL OW

RED

2020328A7163

L_IN

Optional

CN5

5

CN10A

CN9

CN8

INDOOR WIRING DIAGRAM

CN16

CN11

CN2

3

M

8

DISPLAY BOARD

P ART NAME FireWire L input terminal Zero line N input terminal Internal and external communication line interface Indoor fan interface Fan feedback interface Stepper motor interface Ground interface Room temperature sensor interface Pipe temperature sensor interface Display interface Compressor top temperature sensor (optional) Exhaust temperature sensor Outdoor temperature & condenser pipe temperature sensor Four way valve control port AC fan output port Fan capacitor port Electric heating wire line N Electric heating wire line L Power L input terminal Power N input terminal Ground wire Communication line Power N Onput terminal Power L Onput terminal Test panel interface Power L input terminal Power N input terminal Reactor connected line port Bus voltage positive terminal Bus voltage positive terminal Main control board and power supply Standby power interface Compressor connection port

P_1

3(2)

M

~

REFRIGERATION CYCLE DIAGRAMS FIELD PIPING FLARE CONNECTION

TWO PHASE

LIQUID LINE

CAPILLARY TUBE SERVICE VALVE

HEAT EXCHANGER (CONDENSER)

HEAT EXCHANGER (EVAPORATOR)

SERVICE VALVE W/GAUGE PORT SUCTION LINE FLARE CONNECTION

COMPRESSOR FIELD PIPING A08104

Fig. 10 – Cooling

INDOOR UNIT

OUTDOOR UNIT

FLARE CONNECTION

CHECK VALVE (HEATING MODEL ONLY)

LIQUID

LIQUID HTG SERVICE VALVE

TWO PHASE

CAPILLARY TUBE HEAT EXCHANGER (CONDENSER)

HEAT EXCHANGER (EVAPORATOR) SERVICE VALVE W/ GAUGE PORT

SUCTION DISCHARGE

REVERSING VALVE

SUCTION ACCUMULATOR

FLARE CONNECTION

(HEAT PUMP ONLY)

COMPRESSOR FIELD PIPING

COOLING HEATING A08105

Fig. 11 – Heat Pumps

14

REFRIGERANT LINES

Long Line Applications, 38MFC Units:

General refrigerant line sizing: 1 The 38MFC/MFQ units are shipped with a full charge of R410A refrigerant. All charges, line sizing, and capacities are based on runs of 25 ft (7.6 m). For runs over 25 ft (7.6 m), consult long--line section on this page for proper charge adjustments. 2 Minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). 3 Refrigerant lines should not be buried in the ground. If it is necessary to bury the lines, not more than 36--in (914 mm) should be buried. Provide a minimum 6--in (152 mm) vertical rise to the service valves to prevent refrigerant migration. 4 Both lines must be insulated. Use a minimum of 1/2--in. (12.7 mm) thick insulation. Closed--cell insulation is recommended in all long--line applications. 5 Special consideration should be given to isolating interconnecting tubing from the building structure. Isolate the tubing so that vibration or noise is not transmitted into the structure. IMPORTANT: Both refrigerant lines must be insulated separately.

S

The following maximum lengths are allowed: REFRIGERANT LINE LENGTHS ft. (m) Max Elevation Max Elevation Max Line Length (ID over OD) (OD over ID)

Unit Size 9K 12K 17K HP 18K AC 22K

S

65 (20) 65 (20) 65 (20) 65 (20) 98 (30)

25 (8) 25 (8) 30 (10) 30 (10) 30 (10)

Unit Size 9K 12K 18K AC 17K HP 22K

PIPE SIZES (in) Mix Phase 1/4 1/4 1/4 1/4 3/8

Vapor 3/8 1/2 1/2 1/2 5/8

Unit Size

1.34 (0.61) 1.43 (0.65) NA 1.87 (0.85) 2.60 (1.18)

2.60 (1.18) 2.60 (1.18) 2.87 (1.30) NA 3.52 (1.60)

Above charge is for piping runs up to 25 ft. (7.6 m). For piping runs greater than 25 ft. (7.6 m), add refrigerant up to the allowable length as specified below: ADDITIONAL REFRIGERANT CHARGE Unit Size oz./ft. (g/m) 9K --- 18K 22K

Min

Max

Additional Charge, oz/ft. ft (m) 10 --- 25 >25 --- 65 >65 --- 98 (3 --- 8) (8 --- 20) (20 --- 30)

65

10

0.16

None

98

0.32

0.32

　 Cooling: 9&12K 18&22K Heating: 9&12K 17&22K

25 (7.5) 1% 1% 1% 1%

Capacity,% Loss Line Length ft (m) 33 (10) 49 (15) 65 (20) 2% 5% 7% 2% 4% 6% 2% 2%

7% 6%

11% 10%

98(30) --8% --15%

SYSTEM EVACUATION AND CHARGING !

CAUTION

UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Never use the system compressor as a vacuum pump. Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used if the procedure outlined below is followed. Always break a vacuum with dry nitrogen.

SYSTEM VACUUM AND CHARGE

REFRIGERANT CHARGE lb. (kg) Air Conditioner (AC) Heat Pump (HP)

9K 12K 17K HP 18K AC 22K

Total Line Length ft

3 Reduction in capacity due to long lines can be calculated from the chart below. CAPACITY LOSS

25 (8) 25 (8) 30 (10) 30 (10) 30 (10)

Refrigerant Charge

S

ADDITIONAL CHARGE TABLE

The following are the piping sizes.

Unit Size 9K 12K 17K HP 18K AC 22K

S S

1 No change in line sizing is required. 2 Add refrigerant per table below.

0.16 (15) 0.32 (30)

Capillary tubes in outdoor unit are used as metering devices.

Using Vacuum Pump 1 Completely tighten flare nuts A, B, C, D, connect manifold gage charge hose to a charge port of the low side service valve. (See Fig. 12.) 2 Connect charge hose to vacuum pump. 3 Fully open the low side of manifold gage. (See Fig. 13) 4 Start vacuum pump 5 Evacuate using either deep vacuum or triple evacuation method. 6 After evacuation is complete, fully close the low side of manifold gage and stop operation of vacuum pump. 7 The factory charge contained in the outdoor unit is good for up to 25 ft. (8 m) of line length. For refrigerant lines longer than 25 ft (8 m), add refrigerant as specified in the ADDITIONAL REFRIGERANT CHARGE table in this document. 8 Disconnect charge hose from charge connection of the low side service valve. 9 Fully open service valves B and A. 10 Securely tighten caps of service valves.

15

Indoor Unit

Refrigerant

Outdoor Unit

A

Low Side

B

High Side

C D

Service Valve A07360

Fig. 12 – Service Valve Manifold Gage

500 microns Low side valve

High side valve

Charge hose

Triple Evacuation Method The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercury vacuum and system does not contain any liquid water. Refer to Fig. 15 and proceed as follows: 1 Pump system down to 28 in. of mercury and allow pump to continue operating for an additional 15 minutes. 2 Close service valves and shut off vacuum pump. 3 Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig. 4 Close service valve and allow system to stand for 1 hr. During this time, dry nitrogen will be able to diffuse throughout the system absorbing moisture. 5 Repeat this procedure as indicated in Fig. 15. System will then be free of any contaminants and water vapor. EVACUATE

Charge hose

BREAK VACUUM WITH DRY NITROGEN

Vacuum pump

WAIT EVACUATE

Low side valve

BREAK VACUUM WITH DRY NITROGEN

A07361

Fig. 13 – Manifold

WAIT

Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and liquid water. (See Fig. 14)

EVACUATE CHECK FOR TIGHT, DRY SYSTEM (IF IT HOLDS DEEP VACUUM) RELEASE CHARGE INTO SYSTEM A95425

Fig. 15 – Triple Evacuation Method

5000 4500 4000 3500 3000 2500 2000 1500 1000 500

MICRONS

LEAK IN SYSTEM

VACUUM TIGHT TOO WET TIGHT DRY SYSTEM 0

1

2

3 4 5 MINUTES

6

7 A95424

Fig. 14 – Deep Vacuum Graph

Final Tubing Check IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.

CONTROL SYSTEM The 40MFC/MFQ unit is equipped with a microprocessor control to perform two functions: 1 Provide safety for the system 2 Control the system and provide optimum levels of comfort and efficiency The main microprocessor is located on the control board of outdoor unit. Outdoor and indoor units have thermistors used to monitor the system operation to maintain the unit within acceptable parameters and control the operating mode.

16

SYSTEM SAFETIES 3 Minute Time Delay

Condenser temperature protection

In order to protect the compressor, there is a 3 minute delay on break even if the control is calling for heating or cooling. The compressor will have an additional 1 minute delay when powering the unit on for the first time, or after a power failure.

The condenser temperature protection function acts as follows: — If the condenser coil temperature (T3) is between 131_F and 140_F (55C_