1. Entwodiksyon
The QuietWarmth THERMST-D Non-Programmable Thermostat is designed to provide reliable control for 120V or 240V electric radiant floor heating systems. This thermostat offers flexible temperature management, allowing you to configure it for control based on floor temperature, room temperature, or a combination of room temperature with a floor temperature limit. It features a built-in Ground Fault Circuit Interrupter (GFCI) for enhanced safety and a clear, backlit display for easy monitoring and operation. A floor sensor is included to ensure accurate temperature readings and optimal comfort.

Figi 1: Devan view of the THERMST-D Thermostat.
2. Enfòmasyon sou Sekirite
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or property damage.
- AVÈTISMAN: To reduce the risk of electric shock, do not connect this device to a circuit with any phase operating down more than 150 volts to ground.
- Installation must be performed by a qualified electrician in accordance with local and national electrical codes.
- The thermostat requires connection to a dedicated 20 Amp sikwi.
- The resistive load connected to the thermostat must not exceed 15 Amps.
- Electric radiant floor heating systems are required by the National Electrical Code to be protected by a Ground Fault Circuit Interrupter (GFCI). This thermostat has a built-in GFCI.
- Always turn off power at the circuit breaker before installing or servicing the thermostat.

Figi 2: Side view of the thermostat with safety warning label.
3. Pake kontni
Verifye ke tout atik yo prezan nan pakè a:
- QuietWarmth THERMST-D Non-Programmable Thermostat
- Capteur etaj
4. Pwodwi souview
4.1 Karakteristik kle
- Non-Programmable operation for radiant floor heat systems.
- Compatible with both 120V and 240V heating systems.
- Integrated Ground Fault Circuit Interrupter (GFCI) for safety.
- Clear, backlit LED display for easy reading.
- Includes a floor sensor for precise temperature control.
- Configurable for floor temperature, room temperature, or room temperature with a floor temperature limit.
- Seven-day energy log to monitor power consumption.
- Supports multiple QuietWarmth mats: up to 120 sq ft for 120V systems, or 240 sq ft for 240V systems.
4.2 Eleman
The thermostat consists of a front display unit with control buttons and a back plate for electrical connections.
- Panèl devan: Features a digital display showing time and temperature, along with 'Up', 'OK', and 'Down' buttons for navigation and setting adjustments.
- Retounen Panel: Contains wiring terminals for power input (L1, L2) and load output, as well as a connection point for the floor sensor.

Figi 3: Retounen view tèmosta a ak tèminal fil elektrik yo.

Figure 4: Included floor sensor.
5. Enstalasyon ak Enstalasyon
Se sèlman yon elektrisyen kalifye ki ta dwe fè enstalasyon an.
5.1 Montaj
- The thermostat is designed for wall mounting.
- Ensure the mounting location is free from direct sunlight, drafts, or other heat sources that could affect temperature readings.
5.2 fil elektrik
Before wiring, ensure power is OFF at the circuit breaker.
- Connect the thermostat to a dedicated 20 Amp sikwi.
- Identify the Line (power supply) and Load (heating mat) wires.
- Connect the Line wires to the L1(L) and L2(N) terminals on the thermostat's back panel.
- Connect the Load wires from the heating mat to the 'Load' terminals on the thermostat.
- Asire bon koneksyon atè a dapre kòd elektrik lokal yo.
- The thermostat is dual-voltage; it can be used with either 120V or 240V heating mats, but not simultaneously. Verify your heating mat's voltage matche ak ekipman pou pouvwa a.
5.3 Floor Sensor Placement
The floor sensor is crucial for accurate floor temperature control.
- Place the sensor next to the long edge of the QuietWarmth heating mat.
- Ensure the sensor is positioned in the heated area and not near any unheated zones or external heat sources.
- Route the sensor wire carefully to avoid damage during installation of flooring materials.

Figi 5: Egzample of radiant heat film installation under floating floors.

Figi 6: Egzample of radiant heat film installation under tile and glued floors.
6. Operasyon Enstriksyon
6.1 pouvwa sou
After installation, restore power at the circuit breaker. The thermostat display will illuminate.
6.2 Mete Tanperati
- Sèvi ak la Up epi Desann bouton pou ajiste tanperati a vle.
- Peze a OK bouton pou konfime seleksyon ou a.
6.3 Mòd kontwòl
The thermostat can be configured to operate in one of three control modes:
- Floor Temperature Control: The thermostat maintains the floor at the set temperature using the floor sensor.
- Kontwòl Tanperati Chanm: The thermostat maintains the room air temperature at the set point.
- Room Temperature Control with Floor Limit: The thermostat primarily controls room air temperature but prevents the floor temperature from exceeding a specified maximum limit, protecting sensitive flooring materials.
Refer to the full installation guide for instructions on how to select and configure these control modes.
6.4 Energy Log
The thermostat features a seven-day energy log, allowing you to monitor the power consumption of your radiant heating system. Consult the detailed manual for accessing and interpreting this data.
7. Antretyen
7.1 Tès GFCI
For continued safety, the built-in GFCI should be tested monthly.
- Peze a TÈS button located on the bottom of the thermostat.
- The GFCI should trip, cutting power to the heating system and indicating a fault.
- Peze a RESET button to restore power.
- If the GFCI does not trip or reset correctly, discontinue use and contact a qualified electrician.

Figure 7: Bottom of the thermostat with GFCI test button.
7.2 Netwayaj
Siye deyò tèmosta a ak yon twal mou.amp twal. Pa sèvi ak pwodui netwayaj abrazif oswa solvang.
NAN. Depanaj
If you encounter issues with your QuietWarmth THERMST-D thermostat, refer to the following common problems and solutions:
- Pa gen ekspozisyon/Pa gen kouran:
- Check the circuit breaker for the dedicated circuit and ensure it is in the ON position.
- Verifye tout koneksyon fil elektrik yo byen fèm epi kòrèk.
- Sistèm chofaj la pa aktive:
- Ensure the thermostat is set to a temperature higher than the current room or floor temperature.
- Check if the GFCI has tripped (press the RESET button if it has).
- Confirm the correct control mode is selected (floor, room, or room with limit).
- GFCI Trips Frequently:
- This indicates a ground fault. Immediately turn off power at the circuit breaker.
- Inspect the heating mat and wiring for any damage or moisture.
- Ensure the total resistive load does not exceed 15 Amps.
- Contact a qualified electrician for diagnosis and repair.
- Lekti tanperati ki pa egzak:
- Verify the floor sensor is correctly installed and not damaged.
- Ensure the thermostat is not exposed to drafts, direct sunlight, or other external heat sources.
For issues not covered here, please contact QuietWarmth customer support or a qualified electrician.
9. Espesifikasyon
| Spesifikasyon | Detay |
|---|---|
| Mak | QuietWarmth |
| Non modèl | QuietWarmth Non-Programmable Thermostat |
| Nimewo Pati | TÈM-D |
| Dimansyon pwodwi | 3"D x 4"W x 6"H |
| Pwa atik | 11.4 ons |
| Koulè | Blan |
| Materyèl | Plastik |
| Voltage | 120 Vòlt, 240 Vòlt |
| Max Resistive Load | 15 Amps |
| Sous pouvwa | Fil elektrik |
| Kalite kontwolè | Pouse bouton |
| Kalite Kontwòl Tanperati | Manyèl |
| Kalite ekspozisyon | LED (Backlit) |
| Koneksyon Teknoloji | Branche |
| Karakteristik espesyal | Energy Usage Tracking, Built-in GFCI |
| Kalite aliye | Mi mòn |
| Espesifikasyon Met | UL |
| UPC | 696087109103 |
10. Garanti ak sipò
10.1 Enfòmasyon sou Garanti
The QuietWarmth THERMST-D Non-Programmable Thermostat comes with a 3-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
10.2 Sipò pou Kliyan
For technical assistance, troubleshooting, or warranty inquiries, please contact QuietWarmth customer support. Refer to the product packaging or the manufacturer's websit pou jwenn enfòmasyon kontak aktyèl.




