SINGLE ROOM UNDERFLOOR HEATING PACK
INSTALLATION AND USER GUIDE
IDEAL FOR CONSERVATORIES AND EXTENSIONS JGUFHPACK20 - FOR UP TO 20SQM JGUFHPACK30 - FOR UP TO 30SQM
AUGUST 2006
THE JG SPEEDFIT UNDERFLOOR HEATING PACKS • Ideal for conservatories and extensions • Quick and easy to install • Stand alone system • Pre assembled and pre wired • Suitable for tiled, timber or carpeted floor coverings
BOTH PACKS CONTAIN : Control Unit, which is pre assembled and pre wired, has integral ballvalves to allow for isolation from the primary system, an adjustable blending valve to control the temperature of the water and a high quality 6 metre head circulating pump. An anti-vibration mounting bracket ensures silent operation. Programmable Room Thermostat to give individual time and temperature control to the conservatory or room extension. An LCD display shows current and set temperatures. A simple menu makes for easy adjustment by the householder. Speedfit Polybutylene Barrier Pipe, manufactured and Kitemarked to BS7291 Part 2: Class S.
THE 20SQM PACK CONTAINS :1 1 1 200 2
Control Unit Programmable Room Thermostat 15mm x 150m Coil Polybutylene Pipe Pipe Clips Pipe Inserts
THE 30SQM PACK CONTAINS :1 1 2 300 8 2 2
Control Unit Programmable Room Thermostat 15mm x 100m Coils Polybutylene Pipe Pipe Clips Pipe Inserts 15mm Speedfit Equal Tees 15mm Speedfit Stem Elbows
THE PACKS ARE DESIGNED TO BE USED IN SOLID FLOOR INSTALLATIONS.
01
READ THIS FIRST
INSTALLATION OF CONTROL UNIT
The information contained in this publication is designed to assist with the trouble free installation of a Speedfit Single Room Underfloor Heating Pack.
The Underfloor Heating Control Unit should be fixed vertically with the mixing valve at either the top or the bottom, or horizontally with the electrical connection box uppermost.
Before installing or operating any part of the Speedfit System, please read through this Instruction Manual thoroughly. On completion of the installation, leave a copy with the householder for future reference.
Provision should be made to vent air to protect the pump from cavitation.
It is the responsibility of the installer to ensure that equipment connected to the Speedfit System is suitable for the purpose for which it is used and installed in accordance with the manufacturer’s instructions.
The Unit’s situation must allow adequate clearance and accessibility for pipework and maintenance.
The Unit should NOT be floor mounted or in any other position that has the pump shaft vertical.
Locate the Control Unit on the wall and mark the hole fixing positions through the bracket.
WARRANTIES As a result of its long term programmes and rigourous quality standards John Guest Speedfit Limited offer a 25 year guarantee against the defects in materials or manufacturing of Speedfit Barrier Pipe manufactured by John Guest.
Take care to protect the electrical equipment and cables. Drill the holes using a 8mm masonry drill, plug the walls and secure the unit to the wall using the screws provided.
John Guest Underfloor Heating Products, which should be installed and maintained in accordance with our recommendations, carry a 2 year guarantee against defects in materials and manufacture. John Guest Plumbing and Heating Products are for use with normal UK domestic plumbing and heating systems and supplied in accordance with our Conditions of Sale.
✓
ELECTRICAL INSTALLATION In accordance with current legislation, a competent and qualified person must complete all electrical work. JG Speedfit cannot be held responsible for damage to components, fixtures, fittings or injury caused by incorrect or faulty wiring.
✓
PRE INSTALLATION CHECKS
✓
To ensure suitability of the Heating Pack, please note the following - Speedfit recommend that wherever possible, the Control Unit be connected to the primary flow and return and wired independently back to the boiler. - The boiler serving the new system will need to have the ability to take the extra output of up to 3KW.
The Blending Valve on the Control Unit controls the temperature of the water in the underfloor heating loop. Temperature can be adjusted to suit the resistance of the floor to heat transfer.
- The boiler needs to be compatible with the additional pump on the system. - In areas of high heatloss such as conservatories, additional heating may be needed to obtain optimum comfort levels.
✗
BLENDING VALVE
FLOW FROM HEAT SOURCE RETURN TO THE HEAT SOURCE
- Pack JGUFHPACK20 will serve a maximum area of 20m2 and Pack JGUFHPACK30 will serve a maximum area of 30m2 For floor areas larger than 30m2, Speedfit offer a range of underfloor heating products to cater for any size of project. For further information contact our Technical Help Desk 01895 425333.
SITE PREPARATION The site for the underfloor heating system should be clean and level. A layer of Speedfit Edge Insulation Strip should be fixed around the perimeter of the area. This will reduce heatloss and act as an expansion medium. The Insulation Strip should be fitted up to finished floor level, to be trimmed after the screed has cured.
The floor insulation can now be fitted. Tape up all joints to prevent cold bridges forming and screed getting beneath the insulation. The depth of insulation should comply with current Building Regulations, normally 60 - 70mm, Celotex or similar.
RETURN FROM UNDERFLOOR HEATING LOOP
FLOW TO UNDERFLOOR LOOP
02
INSTALLATION OF PIPEWORK The shape of the room and the position of outside walls and windows should determine the pattern of the pipe layout. The counterflow pattern is preferred but other options are shown below.
Install the Floor Clips by screwing them into the insulation, between 500mm and 700mm apart.
Push a Pipe Insert into the end of the pipe and connect the pipe to the flow to underfloor loop connection on the unit.
DOUBLE SERPENTINE
COUNTERFLOW
Clip the pipe to the Floor Clips and, again using a pipe insert, connect the end of the loop to the return from underfloor heating loop connection on the Control Unit.
SINGLE SERPENTINE
TRIPLE SERPENTINE
Please ensure the ends of the pipe are free of score marks and burrs and sharp edges have been removed.
✗ DOUBLE MEANDER
Whichever layout pattern you use, the pipes should be fixed at 150mm centres, this equates to approximately 6.5m of pipe per m2 of floor area. Allow a gap of 100mm between the pipes and the walls to prevent damage from fixtures and fittings. For areas larger than 15m2, the area should be split into 2 loops of pipe covering equal floor areas. Use a standard Speedfit 15mm Equal Tee and Stem Elbow connected directly to the flow and return from the unit.
The table below shows an estimate of the length of pipe needed for various sizes of room and different floor coverings. Remember to allow sufficient pipe to provide a flow and return to the Control Unit.
03
Loop
Max
Max
Length (m)
Area (m2)
Temp/Tiles (ºC)
Temp/Carpet (ºC)
Output (KW)
100
15
44
58
1.5
150
22
44
58
2.0
The maximum length of any single pipe circuit should be 100metres.
TYPICAL PIPEWORK CONNECTIONS
SCREEDING
Speedfit recommend that wherever possible, the Control Unit is connected to the primary flow and return.
The screed should be laid as soon as possible after the pressure test.
BOILER CH PUMP
SINGLE ROOM CONTROL UNIT
ZONE VALVES
The system should be left pressurised during the screeding process. The screed must be laid so that it is in good contact with the pipes with no air pockets. Traditional sand and cement screed is normally 65-75mm thick. It should be allowed to dry naturally in line with the requirements of the screed manufacturer’s instructions and British Standards.
BYPASS
Special low thickness screeds are available and screed manufacturers will be able to advise on their use with underfloor heating. Manufacturers’ screed drying times will vary but under no circumstances should the underfloor heating system be used to speed up the drying process as it may damage the screed.
RADIATORS
However it is possible to connect to the nearest radiator supply as per the diagram below, Connecting in series will prevent the radiator being robbed of heat. The valves on the radiator you connect to must be fully open. Thermostatic radiator valves must be replaced by a standard radiator valve.
OPERATING PRINCIPLES
BOILER
The Speedfit Control Unit will operate when :-
RADIATOR SINGLE ROOM CONTROL UNIT
-
The room thermostat is calling for heat.
-
The primary heating circuit is on and the water temperature has reached 43˚C.
The blending valve will maintain the temperature of the heating loop, blending the cooler return flow from the loop with the flow from the boiler. A control knob on the blending valve adjusts the temperature of water to suit comfort levels and different floor finishes. The room thermostat will switch the pump off when the selected room temperature is reached. When the primary heating is off and the room thermostat is calling for heat, the pump will continue to run until the temperature in the heating loop falls to approx 30˚C.
PRESSURE TESTING The underfloor heating pipework should be pressure tested before the system is connected to the primary circuit and before screeding. This is done by connecting the pressure tester via a piece of pipe to the red ballvalve and connecting a hose from the cold mains to the blue ballvalve. Fully open both valves and fill the system, to purge all traces of air, until water is entering the pressure tester. Turn the blue ballvalve off and disconnect the hose between the blue ballvalve and the mains. Using the pressure tester, pressurise the system to 2 Bar for 10 minutes and then 6 bar for 10 minutes. The test to 6 Bar is because the pump is connected. After testing, the system should remain pressurised at 6 Bar throughout the screeding and curing process. This is in accordance with BS EN1264 Part 4.
BLENDING VALVE SETTINGS The thermostatic blending valve has a temperature range of between 35˚C and 60˚C. MIN 1 2 3 4 5 6 MAX
35˚C 40˚C 44˚C 48˚C 50˚C 54˚C 58˚C 60˚C
After the screed drying process, the blending valve should be adjusted to suit comfort levels and the floor covering. For screeded floors the temperature level will normally be set between 44˚C and 58˚C. To achieve comfort levels the maximum floor surface temperature will normally not be required to exceed 29˚C ( 35˚C in bathrooms). Timber floor finishes such as laminated products may suffer from excessive material shrinkage if the floor surface temperature exceeds 27˚C. 04
FOR A CONTROL UNIT PIPED BACK TO A PRIMARY CIRCUIT - 2 PORT VALVE CONTROLS THE BOILER All wiring should be undertaken by a qualified electrician and conform to IEE Regulations. To comply with the regulations, the pump on the control unit is provided with an earth connection via the connection box. Connect the control unit to a mains fed spur fused at 3 amps.
L
PERMANENT LIVE
N
NEUTRAL
E
EARTH
SL
SWITCHED LIVE (STAT “ON” CALLING FOR HEAT)
The method of control, which provides independent control of the boiler, is to use a Programmable Room Thermostat wired to a zone valve, fitted to a dedicated flow and return to the room pack. The zone valve will be used to turn the boiler on and off as per conventional central heating practice i.e. the live on the Programmable Room Thermostat is connected to a permanent live. The switched live from the Programmable Room Thermostat is connected to the switched live (brown) of the zone valve. This removes the need to alter the internal wiring on the Room Pack.
SL
PERMANENT LIVE
L
PERMANENT LIVE
(TO 2-PORT ZONE VALVE)
(FROM SRCU TO STAT)
SL
SWITCHED LIVE
SL
SWITCHED LIVE
(TO FIRE BOILER FROM ZONE VALVE)
(TO POWER ZONE VALVE MONITOR)
For further information, please contact the Speedfit Technical Helpdesk 01895 425333. 2 PORT ZONE VALVE ( SPRING RETURN WITH END SWITCH )
SPEEDFIT PROGRAMMABLE ROOM THERMOSTAT ( JGUFHPRS )
PERMANENT LIVE CONNECTION TO POWER ROOM THERMOSTAT SWITCHED LIVE FEED TO FIRE BOILER DIRECTLY OR TO EXTG JUNCTION BOX
240V MAINS SUPPLY 3 AMP FUSED
SINGLE ROOM CONTROL UNIT
05
PRE-WIRED SINGLE ROOM CONTROL UNIT CONNECT TO POWER SUPPLY ONLY. UNIT IS SWITCHED ON/OFF VIA INTERNAL TEMPERATURE SWITCH
YOUR PROGRAMMABLE ROOM THERMOSTAT
DIMENSIONS 112
FEATURES - Keypad Lock Facility Ø 3.50
60
- Battery Backup Power Supply - Reset Function
60 24
73
- Improves Energy Efficiency - Holiday Function - 9 Preset Weekly Programs - 4 User Set Programs - Current Temperature and Time Display
INSTALLATION & WIRING - Manual Override Facility
1
OVERVIEW The Speedfit Programmable Room Thermostat is used to set individual time and temperature control for each room or a ‘zone’ of 2 or more rooms.
Remove the front panel of the thermostat by pressing on the left side of the casing. Place the casing (A) on a flat wall away from windows and doors and not too close to the heater.
There are 9 preset 7 day programs and the facility to create up to 4 user programs where you can set up your own daytime and set back heating patterns.
Put the connection wires (B) through the back hole of the casing. Use the screws (C) to mount the casing on the wall.
TECHNICAL CHARACTERISTICS
2 Connect the wires to the connector (D). Follow the connection diagram.
MEASURED TEMPERATURE PRECISION
0.1ºC (OR 0.2ºF)
3
SET TEMPERATURE PRECISION
0.5ºC (OR 0.5ºF)
Remove the plastic isolator on the batteries to power up the thermostat. Then replace the cover as explained in step 3 of BATTERY REPLACEMENT.
SET TEMPERATURE RANGE
DAYTIME AND SETBACK :
5ºC - 35ºF (OR 41ºF - 95ºF)
IN ANTI FREEZE :
0.5ºC - 10ºC (OR 33ºF - 50ºF)
- REGULATION SPEED
7.5 CYCLE PER HOUR (8 MINUTES CYCLE)
- REGULATION BAND
2ºK OF PROPORTIONAL BAND (ADJUSTED POWER)
REGULATION CHARACTERISTICS
DRIVING ELEMENT
8A RELAY (WITH HEATER AND COOLING DEVICES CONTACTS)
CONNECTION
3 POINTS SCREW CONNECTOR ON THE REAR PART OF THE BOX
BATTERIES
3 X LR6 AA 1.5V BATTERIES
4 Now go to RESET THE THERMOSTAT. B
A
D C
(COOLER) HEATER
L N
06
SETTING UP THE PROGRAMMABLE ROOM THERMOSTAT DAYTIME AND SET BACK Unlike a radiator system, underfloor heating works at its most efficient when operating 24 hours a day. Electronic controls provide a means by which temperature can be set back by between 4-5ºC during periods of low demand. So, for instance a lounge can have a temperature setting of 21ºC during daytime, reducing to 17ºC during set back (night time). A bedroom may well require a so called daytime temperature setting during the evening and night and a set back temperature during daylight hours. The example below, taken from the LCD Display, shows daytime settings between 0700-0900 and 1700-2300 and a set back between 2300-0700 and 0900-1700.
1
2
3
4
5
6
7
UNDERSTANDING THE LCD DISPLAY OPERATING MODE MENU HOLIDAY FUNCTION ACTIVATED
(
USE < > KEYS TO CHANGE MODE )
LOW BATTERY WARNING SET TEMPERATURE OVERRIDDEN
DAYS OF THE WEEK
HEATING ON TEMPERATURE
TIME DISPLAY
( USE + / - KEYS TO CHANGE TEMPERATURE )
ROOM TEMPERATURE DISPLAYED
MODE DESCRIPTION DAYTIME MODE Having chosen the heating program, this mode allows you to select the daytime temperature. That selected temperature can be overridden using the Manual Override Function.
AUTO MODE In AUTO mode, the thermostat will follow the heating pattern of the selected program.
SET BACK MODE Having chosen the heating program, this mode allows you to select the set back temperature. We would recommend that the set back temperature be 4ºC below the daytime temperature. The set back temperature can be overridden using the Manual Override Function.
07
SELECTED HEATING PROGRAM
ANTI FREEZE OPERATING MODE Used to provide the minimum of heating to ‘air’ an unoccupied building and prevent water in the system from freezing. See ANTI FREEZE FUNCTION.
OFF MODE Used when you need to turn your underfloor heating system off. The time, day and other information will be stored. Awake the thermostat by pressing any button, then use < or > to select the required mode.
CLOCK MODE Shows the current time and day. See SETTING THE TIME AND DAY.
PROGRAM MODE Allows you to choose from the 9 preset weekly heating programs, or create up to 4 user programs which can be tailor made to suit your needs. See Setting Your Underfloor Heating Requirements.
RESET THE THERMOSTAT
SETTING A USER PROGRAM - PROGRAMS U1 - U4
This ensures that all preset information reverts to FACTORY SETTINGS, on page 10.
Use < > to select program mode and press The program and the day will begin to flash. Use + - to select U1.
Using the < > buttons, select the Off mode . Once the LCD display switches off, hold down + and - and press
OK
OK
.
.
After a couple of seconds, all icons and graphics will become visible, this confirms that the thermostat has been reset.
1
2
3
4
5
6
7
SETTING THE TIME AND DAY Using < > buttons select the Clock mode Press OK The minutes will begin to flash. Use + - to set the correct time. Use < > buttons to switch between minutes and hours. Press OK to confirm time. Day 1 will begin to flash. Use < > buttons to select the correct day. 1-Mon 2-Tue 3-Wed 4-Thu 5-Fri 6-Sat 7-Sun Press OK to confirm.
SETTING YOUR UNDERFLOOR HEATING REQUIREMENTS The thermostat has 9 preset programs to provide a quick and easy way of setting the system’s heating patterns. In addition, there are 4 user programs that allow you to set your own daytime and set back heating patterns.
All 24 hours are now at daytime setting. Press OK and the time and the hour cursor will flash. Use < > to select those hours which need to be moved to set back. Choose the first hour to be set back and press - . Press - again for each hour to be added to the set back period. Press > to continue to select hours that need to remain in daytime setting. Continue through the 24 hours of day 1. Further set back periods can be programmed using the - button.
SETTING A PRESET HEATING PROGRAM PROGRAMS P1- P9 An easy reference of the 9 preset programs is shown on page 10. Use < > to select the program mode and press The program and day will begin to flash.
1
2
3
4
5
6
OK
. 1
2
3
4
5
6
7
7
In this example, Program U1 has been set for Day 1. Daytime from Midnight to 06:00, 12:00 to 14:00 and 18:00 to Midnight. Set Back from 06:00 to 12:00 and 14:00 to 18:00.
Use + - to change the program, and < > to view the heating pattern for each of the seven days. NOTE Most preset programs have the same daytime and set back times for days 1-5 and different time settings for days 6 and 7 Set the program you require by pressing OK . Within a minute or so the thermostat will change to mode.
After creating a heating pattern for day 1 the program will then continue to day 2. Continue to press - and > to complete program U1 to the end of day 7. Having completed programming of U1 there is the facility to program 3 more user programs, U2, U3 and U4. To start programming U2 follow the instructions from the start of this section. NOTE The program will only be followed whilst in mode.
The preset program will only be followed whilst the thermostat is in mode.
08
SETTING THE DAYTIME TEMPERATURE
RESET FUNCTION
The thermostat is factory set at a daytime temperature of 21ºC.
Returns the thermostat to factory settings. Using the < > buttons, select the Off mode . Once the LCD display switches off, hold down + and - and, at the same time, press OK . After a couple of seconds, all icons and graphics will become visible, this confirms that the thermostat has been reset.
To alter that setting: Use < > to select daytime mode . Use + - to select the desired temperature. Use < > to return to .
SETTING THE SET BACK TEMPERATURE The thermostat is factory set at a set back temperature of 17˚C.
FACTORY SETTINGS
To alter that setting: Use < > to select set back mode
Daytime Set Back Anti Freeze User Programs
21˚C 17˚C 6˚C All 24 hours in daytime setting
Preset programs
See page 10.
.
We recommend that the set back temperature be set at 4˚C below daytime temperature. Use + - to select the desired temperature. Use < > to return to .
BATTERY BACKUP A battery backup ensures no loss of stored data during power cuts or when the thermostat is in the off mode. The low battery icon will appear when the batteries need replacing.
SPECIAL FUNCTIONS MANUAL OVERRIDE FUNCTION It is possible to manually override the temperature setting. In mode, use the + - buttons to set the override temperature required. The icon will appear. At the next change in the program’s pattern, the temperature will revert to the preset level and the icon will disappear.
BATTERY REPLACEMENT HOW TO CHANGE THE BATTERIES
1 HOLIDAY FUNCTION
Press on the left side button and pull the front panel to remove it. You now have access to the batteries.
The holiday function allows you to override the system for up to 95 days. For example, the heating system can be run at a reduced temperature while you are away, returning to mode the day you return. The holiday function can be set to run at daytime or anti freeze temperature. To reach HOLIDAY FUNCTION use < or > until ‘no’ idicates HOLIDAY FUNCTION is not set.
, set back
,
appears.
2
Replace the three LR6 AA 1.5V batteries with new ones. IMPORTANT: You have 1 minute to change the batteries.
Use + - buttons to set the number of hours or days you wish to override the system. Press OK to confirm. The thermostat will now revert to anti freeze mode. Use < > to select daytime or set back mode.
3 ANTI FREEZE FUNCTION The system can be set to run only at a low room temperature (between 0.5˚C and 10˚C). This will keep the room aired and avoid the water in the system freezing. To set the antifreeze function, use < > to select anti freeze mode . Use the + - to set the temperature setting and press OK to confirm the selected temperature. In anti freeze mode the temperature will not fall below the selected level. This will continue indefinitely until the mode is changed. To set the anti freeze function for up to a maximum of 95 days, use the facility within the holiday function. We recommend that the temperature be set at a minimum of 5ºC.
KEYPAD LOCK To prevent unauthorised tampering. Hold down the + or - button, will appear. Repeat the process to unlock. 09
OK
, simultaneously press
will appear.
To close the thermostat: Hold the front panel over the casing. Insert the 3 contacts into the 3 connector holes. Push the front panel while keeping it parallel to the case. Press slightly on the button to help final assembly.
PRESET HEATING PROGRAMS - P1 - P9 DAY 1 - 5
1
2
3
DAY 6 - 7
4
5
6
7
DAY 1 - 5
1
2
3
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
7
6
7
1
2
1
1
1
4
5
6
7
1
3
4
5
6
7
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
2
3
4
5
6
7
4
5
6
7
DAY 7
2
3
4
5
6
7
1
DAY 7
2
3
4
5
6
7
2
3
1
2
3
4
5
6
7
DAY 1 - 5
4
5
6
1
7
2
DAY 6 - 7
3
4
5
6
7
1
2
3
DAY 7
2
3
4
5
6
7
DAY 2 - 4
2
1
DAY 6 - 7
DAY 7
DAY 6
DAY 1
1
5
DAY 6 - 7
DAY 1 - 5
1
4
DAY 6
DAY 1 - 5
1
3
DAY 6
DAY 1 - 5 1
2
DAY 6
DAY 1 - 5
1
1
DAY 1 - 5
2
3
1
2
3
4
5
6
7
DAY 5
4
5
6
7
1
DAY 6 - 7
2
3
4
5
6
7
1
2
3
4
5
6
7
10
John Guest Speedfit Limited Horton Road, West Drayton, Middlesex UB7 8JL, England. Tel: 01895 449233 Fax: 01895 420321. www.speedfit.co.uk Technical Help Desk: 01895 425333
and
are registered trademarks of John Guest
International Limited © Copyright 2006. The company has a policy of continuous research and development and reserves the right to amend without notice the specification and design of all products illustrated in this catalogue. John Guest Speedfit reserve the right to change the colour and shape of products. Photographs are for illustration purposes only. Subject to our Terms and Conditions of Sale available on request.
Z2105/239/08/06
