Raychem Green Leaf Programmable Thermostat
Installation Instruction
Attention
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
1. Description
The Raychem Green Leaf Thermostat is a Programmable Thermostat designed for Electrical Floor Heating. It controls your Electrical Floor Heating to provide optimal comfort and energy efficiency.
The Thermostat supports 3 temperature sensing modes:
- Floor Sensing mode
- Room Sensing mode
- Room Sensing mode with floor temperature limiter
The Thermostat offers 2 programs:
- Manual ON/OFF (Constant Single temperature)
- Timer programme (4 timer events per day)
To switch between programs, touch the intelligent leaf button.
2. Mounting and Installation
Mounting the Thermostat
Installation must be performed by a qualified installer. The Green Leaf has IP21 protection. Comply with all local regulations. It is designed for flush mounting in a wall box, positioned approximately 1.5 meters above the floor, away from direct sunlight and draughts. Seal all electrical conduits entering the wall box to prevent draughts.
Step 1: Switch off the power supply.
Step 2: Detach the metallic support from the Thermostat using a screwdriver.
Step 3: Screw the metallic support frame to the in-wall box.
Step 4: Install the floor sensor (mandatory for floor sensing mode or room sensing mode with floor temperature limiter).
The floor sensor should be installed in a separate flexible conduit, with the end covered, for easy replacement and to prevent signal interference. For optimal performance, position the floor sensor between two heating cables, close to the top floor surface, and no closer than 3 cm to the heating cable. The floor sensor cable can be extended up to 100 m using a standard 2 x 1.5 mm² (230VAC) installation cable.
Step 5: Connect the electrical power supply, the sensor, and the cold lead of the electrical floor heating system to the Green Leaf according to the electrical diagram. If connecting heating cables exceeding 13A (constant wattage) or 10A (self-regulating), use a contactor with an integrated suppression device. Use a separate earth terminal connection block for the floor heating earth connection.
Step 6: Click the Green Leaf into the metallic support frame.
Step 7: Switch on the power again.
Product Specific Information
The thermostat is compatible with Raychem QuickNet, T2Blue, T2Green, T2Black, and T2Red heating solutions.
T2Red
Self-regulating heating cables can cause an inrush current when the floor is cold. To ensure the thermostat's lifespan, the maximum load for self-regulating applications is limited to 10A under nominal conditions. A 13A self-regulating load may reduce the lifespan of the relay contacts and void the Total Care Warranty.
3. Using the Thermostat
The Display
Display in manual on/off programme
The following icons may appear in Manual ON/OFF mode:
- Active sensor display: Indicates the active sensing mode.
- Heating display: Flashes when the heating is active.
The displayed temperature depends on the selected sensing mode:
- Floor sensing mode: Displays the actual floor temperature.
- Room sensing mode: Displays the actual room temperature.
- Room sensing with floor temperature limiter mode: Displays the actual room temperature.
Remark: Touching the left [arrow] or right [arrow] button will display the set point temperature, blinking for 5 seconds.
Installer Menu
Touch the 'M' button for 5 seconds to enter the Installer Menu.
Display in timer programme
The following information is visible in the Timer Programme:
- Time and day: The current day is shown with 3 letters (e.g., MON, TUE). The time can be set in 24H or 12AM/PM mode (refer to INSTALLER MENU).
- 4 Event display: Symbols indicate the programmed events (Event 1, Event 2, Event 3, Event 4).
4. Manual On/Off Programme
When the thermostat is first powered on (after touching the Green Leaf button for 2 seconds), it defaults to the MANUAL ON/OFF program using floor sensing mode. (Refer to INSTALLER MENU to change the sensing mode).
The display will show the current temperature.
- Touch [left arrow] or [right arrow] to show the set point temperature; it will blink for 5 seconds.
- Touch [left arrow] to decrease the temperature.
- Touch [right arrow] to increase the temperature.
To switch from Manual ON/OFF to Timer Programme, touch the [O button] once.
To switch off the thermostat, touch the [O button] for 2 seconds.
5. Timer Programme
The Green Leaf can be programmed with 4 events per day, allowing for different temperatures at different times. Days can be programmed individually or in groups.
The default Timer Programme is illustrated in the graphs below. You can customize this program according to your needs (see PROGRAMMING THE TIMER PROGRAMME).
- Touch the [O button] for 3 seconds to program the timer program (see page 14 for more details).
- Touch the 'M' button for 5 seconds to enter the Installer Menu.
- Touch the [O button] to switch from Timer to Manual ON/OFF mode.
- Touch the [O button] for 2 seconds to put the Thermostat into OFF (standby) mode.
- Touch [left arrow] or [right arrow] to show the set point temperature; it will blink for 5 seconds.
- Touch [left arrow] to decrease the temperature.
- Touch [right arrow] to increase the temperature.
Remark: The adjusted temperature is valid until the next timer event.
6. Setting the Clock
- Touch the [O button] to set the clock and day of the week.
- Use [left arrow] or [right arrow] to change the hours, then validate with the [O button].
- Use [left arrow] or [right arrow] to change the minutes, then validate with the [O button].
- Use [left arrow] or [right arrow] to change the day of the week, then validate with the [O button].
Remark: In case of battery drainage after a long period of power failure, you may need to re-programme the clock.
7. Programming the Timer Programme
- Touch the [O button] for 3 seconds to enter the Timer Programme programming mode.
- Use [left arrow] or [right arrow] to select the day (or sequence of days) you wish to program, then validate with the [O button].
Available Day Sequences:
- MON
- TUE
- WED
- THU
- FRI
- SAT
- SUN
- MON TUE WED THU FRI
- SAT SUN
- MON TUE WED THU FRI SAT SUN
For Event 1:
- Use [left arrow] or [right arrow] to change the hours for Event 1, then validate with the [O button].
- Use [left arrow] or [right arrow] to change the minutes for Event 1, then validate with the [O button].
- Use [left arrow] or [right arrow] to change the temperature for Event 1, then validate with the [O button].
For Events 2, 3, and 4:
Repeat the actions for Event 1 for Events 2, 3, and 4.
Touch the [O button] at any time during programming to save your changes and return to the Timer Programme. If needed, you can repeat the complete procedure to program other days or sequences of days.
8. Installer Menu
Touch the 'M' button for 5 seconds to enter the Installer Menu.
| # | Description | Range | Default setting |
|---|---|---|---|
| 1 | Sensing mode selection | Floor sensing mode Room sensing mode Room sensing mode with floor temperature limiter | Floor Sensing mode |
| 2 | 12 vs 24 hours display | 12 / 24 | 24 |
| 3 | Motion sensor. When getting close to the thermostat (5cm range) the display lights up automatically | ON / OFF | ON |
| 4 | Offset for floor sensor calibration | Offset of 0 .. 10°C | 4°C |
| 5 | Room sensor calibration | Measured sensor temperature +/- 5°C | Measured sensor temperature |
| 6 | Minimum temperature set point for the Floor Sensor | Floor sensing mode: 5 .. 15°C Room sensing mode: OFF Room sensing mode with floor temperature limiter: OFF | 5°C |
| 7 | Maximum temperature set point for the Floor Sensor | Floor sensing mode: Minimum temperature set point floor sensor (installer menu 6) +5°C .. 35°C Room sensing mode: OFF Room sensing mode with floor temperature limiter: 10 .. 35°C | 35°C |
| 8 | Minimum temperature set point for the Room Sensor | Floor sensing mode: OFF Room sensing mode: 5 .. 15°C Room sensing mode with floor temperature limiter: 5 .. 15°C | 5°C |
| 9 | Maximum temperature set point for the Room Sensor | Floor sensing mode: OFF Room sensing mode: Minimum temperature set point room sensor (installer menu 8) +5°C .. 40°C Room sensing mode with floor temperature limiter: Minimum temperature set point room sensor (installer menu 8) +5°C .. 40°C | 40°C |
| 10 | Adjustable hysteresis | 0.5 .. 2.0°C | 1.0°C |
| 11 | Open window function | ON/OFF | ON |
Floor sensor calibration
The floor surface temperature may differ from the sensor's measurement due to floor construction, type, or sensor position. Use the OFFSET in Installer Menu 4 for calibration.
After the floor temperature stabilizes, place a thermometer on the surface to get the real temperature (Tsurface). Read the floor sensor temperature (Tsensor) on the thermostat and adjust the OFFSET using the formula:
OFFSET = Tsensor - Tsurface
Room sensor calibration
If the room sensor reading differs from the actual room temperature, calibrate it using Installer Menu 5.
After the room temperature stabilizes, place a thermometer near the wall to measure the real room temperature. If it differs from the thermostat's reading, adjust Menu 5 using the [left arrow] or [right arrow] buttons until the thermostat matches the reference thermometer.
9. Troubleshooting
In case of damage or malfunction of a temperature sensor, the heating output will cut off (fail-safe) and an error code will be displayed.
| Error Code | Description |
|---|---|
| ER1 | Short circuit on floor sensor |
| ER2 | Open circuit on floor sensor / Missing floor sensor |
| ER3 | Short circuit on room sensor |
| ER4 | Open circuit on room sensor |
| ER5 | Check sensing mode |
The floor sensor can be replaced. If the room sensor malfunctions, the entire thermostat must be replaced (Error 3 or Error 4).
Error 5 occurs if the thermostat is set to Room Sensing Mode and the floor sensor is installed. To resolve this, change the sensing mode to Floor sensing or Room sensing with floor temperature limiter, or remove the floor sensor to operate in room sensing mode.
The floor sensor has the following temperature/resistance values:
| Temperature | Resistance |
|---|---|
| 15°C | 15.8 kΩ |
| 20°C | 12.5 kΩ |
| 25°C | 10.0 kΩ |
| 30°C | 8.0 kΩ |
| 35°C | 6.5 kΩ |
10. Technical Specification
| Supply voltage | 230VAC, +10%, -15%, 50Hz |
| Power consumption (Stand-by) | 3 VA |
| Relay output | 230V, maximum 13A resistive load (max. 3000W) |
| Ambient temperature - operation | 0 .. 40°C, 5-95% RH (non condensing) |
| Ambient temperature - transport | -10 .. +60°C |
| Temperature range, floor sensor | +5 .. +35°C |
| Temperature range, room sensor | +5 .. +40°C |
| Switching hysteresis | 1°C (Factory settings adjustable between 0.5-2.0°C) |
| Control modes | Floor sensing Room sensing Room sensing with floor temperature limiter |
| Temperature control | Manual ON/OFF Timer programme |
| Protection class | IP 21 |
| Terminals | Max. 2,5 mm² |
| Floor sensor with 3 m cable | NTC, 10kΩ / 25°C |
| Maximum length of floor sensor Cable | 100 m, 2 x 1,5 mm² (230VAC cable type) |
| Approvals | CE EAC UK CA |
| Type of action | 1.B. (39)* |
| Control pollution degree | 2 (49)* |
| Rated impulse voltage | 4kV (75)* |
| Temperature for the ball pressure test | 125°C (77)* |
| SELV limits realized | 22 VDC (86)* |
* According to the EN 60730-1 table 1
11. Dimensions
- Front View: 86.3 mm x 86.3 mm
- Side View: Depth 41.0 mm, Mounting depth 16.5 mm
- Back View (Mounting Frame): 86.3 mm x 86.3 mm, Terminal area width 48.0 mm
- Wall Box Mounting Plate: 79.8 mm x 60.0 mm
12. Contact Information
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©2025 Chemelex. All Chemelex marks and logos are owned or licensed by Chemelex Europe GmbH or its affiliates. All other trademarks are the property of their respective owners. Chemelex reserves the right to change specifications without notice. Document reference: RAYCHEM-IM-EU0637-GreenLeafEU-EN-2504.
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