1. Introducción
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.

Figura 1: Frente view of the THERMST-D Thermostat.
2. Información de seguridad
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or property damage.
- ADVERTENCIA: 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.
- La instalación debe ser realizada por un electricista calificado de acuerdo con los códigos eléctricos locales y nacionales.
- The thermostat requires connection to a dedicated 20 Amp circuito.
- 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.
- Siempre apague el interruptor de energía antes de instalar o realizar mantenimiento al termostato.

Figura 2: Lado view of the thermostat with safety warning label.
3. Contenido del paquete
Verifique que todos los artículos estén presentes en el paquete:
- QuietWarmth THERMST-D Non-Programmable Thermostat
- Sensor de suelo
4. Producto terminadoview
4.1 Características principales
- 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 Componentes
The thermostat consists of a front display unit with control buttons and a back plate for electrical connections.
- Panel frontal: Features a digital display showing time and temperature, along with 'Up', 'OK', and 'Down' buttons for navigation and setting adjustments.
- Panel posterior: Contains wiring terminals for power input (L1, L2) and load output, as well as a connection point for the floor sensor.

Figura 3: Atrás view of the thermostat with wiring terminals.

Figure 4: Included floor sensor.
5. Configuración e instalación
La instalación sólo debe ser realizada por un electricista calificado.
5.1 Montaje
- 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 Cableado
Before wiring, ensure power is OFF at the circuit breaker.
- Connect the thermostat to a dedicated 20 Amp circuito.
- 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.
- Asegúrese de que haya una conexión a tierra adecuada según los códigos eléctricos locales.
- 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 coincide con la fuente de alimentación.
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.

Figura 5: Example of radiant heat film installation under floating floors.

Figura 6: Example of radiant heat film installation under tile and glued floors.
6. Instrucciones de funcionamiento
6.1 Encendido
After installation, restore power at the circuit breaker. The thermostat display will illuminate.
6.2 Ajuste de temperatura
- Utilice el Up y Abajo botones para ajustar la temperatura deseada.
- Presione el OK Botón para confirmar su selección.
Modos de control 6.3
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.
- Control de temperatura ambiente: 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. Mantenimiento
7.1 GFCI Testing
For continued safety, the built-in GFCI should be tested monthly.
- Presione el PRUEBA button located on the bottom of the thermostat.
- The GFCI should trip, cutting power to the heating system and indicating a fault.
- Presione el REINICIAR 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 Limpieza
Limpie el exterior del termostato con un paño suave.amp Paño. No utilice limpiadores abrasivos ni disolventes.
8. Solución de problemas
If you encounter issues with your QuietWarmth THERMST-D thermostat, refer to the following common problems and solutions:
- Sin pantalla/Sin energía:
- Check the circuit breaker for the dedicated circuit and ensure it is in the ON position.
- Verifique que todas las conexiones del cableado sean seguras y correctas.
- El sistema de calefacción no se activa:
- 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.
- Lecturas de temperatura inexactas:
- 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. Especificaciones
| Especificación | Detalle |
|---|---|
| Marca | TranquiloCalidez |
| Nombre del modelo | QuietWarmth Non-Programmable Thermostat |
| Número de pieza | Termopar-D |
| Dimensiones del producto | 3" de profundidad x 4" de ancho x 6" de alto |
| Peso del artículo | 11.4 onzas |
| Color | Blanco |
| Material | Plástico |
| Volumentage | 120 voltios, 240 voltios |
| Carga resistiva máxima | 15 Amps |
| Fuente de poder | Cableado |
| Tipo de controlador | Botón pulsador |
| Tipo de control de temperatura | Manual |
| Tipo de pantalla | LED (Backlit) |
| Tecnología de conectividad | Cableado |
| Característica especial | Energy Usage Tracking, Built-in GFCI |
| Tipo de montaje | Montaje en pared |
| Especificación cumplida | UL |
| Código Postal | 696087109103 |
10. Garantía y soporte
10.1 Información de garantía
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 Atención al cliente
For technical assistance, troubleshooting, or warranty inquiries, please contact QuietWarmth customer support. Refer to the product packaging or the manufacturer's webSitio para obtener información de contacto actualizada.




