Description
TERMOFOL TF-H3 Manual Thermostat – Reliable temperature control with a rotary knob
The TERMOFOL TF-H3 is a robust and easy-to-operate manual thermostat for electric underfloor heating. This model is ideal for users who opt for classic operation, direct control, and maximum reliability. With the clear rotary knob, you set the desired temperature quickly and accurately, without complex menus or settings.
Thanks to the built-in safety features and the accurate floor temperature sensor, the TF-H3 provides stable and safe operation in any room.
Smart features for comfort and safety
Precise temperature control
With the mechanical rotary knob, you can easily set a temperature between 5°C and 35°C, with a regulation deviation of only ±1°C. This ensures constant comfort and prevents unnecessary energy consumption.
Built-in floor sensor
The thermostat comes with an NTC B3950 10K floor temperature sensor, which continuously measures the temperature and ensures optimal operation of the heating system.
Anti-freeze function
The special frost protection mode automatically maintains a low temperature to prevent pipes and floors from freezing. This mode is easily activated using the snowflake symbol on the dial.
Mechanical temperature limitation
With the integrated red and blue adjustment pins, you can mechanically limit the minimum and maximum temperatures. This increases safety and prevents unwanted settings.
Automatic temperature reduction
The TF-H3 features a switch-off function that automatically lowers the temperature when full heating is not required. By default, this reduction is 6°C, adjustable between 2 and 8°C, which contributes to energy savings.
LED status indication
The integrated LEDs show the thermostat status at a glance:
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🔴 Red – heating active
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🔵 Blue – anti-freeze mode
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🟢 Green – standby
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🟡 Yellow – temperature reduction active
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🔴 (flashing) – sensor failure
Technical specifications
| Characteristic |
Specification |
| Power supply |
120–240 V AC / 50–60 Hz |
| Temperature range |
5 °C – 35 °C |
| Rule deviation |
±1 °C |
| Maximum load |
16 A / 3600 W |
| Recommended load |
Max. 90% of 16 A |
| Temperature sensor |
NTC B3950 10K (floor sensor) |
| Protection class |
IP31 |
| Total dimensions |
84 × 84 mm |
| Dimensions without frame |
57 × 57 mm |
| Assembly |
Built-in |
| Compatibility |
Suitable for 56 × 56 mm frames (including Schneider Exxact) |
Easy installation and operation
The TF-H3 is mounted in a standard flush-mounted box and connected via a well-organized terminal block for power supply, heating cable, and floor sensor. Operation is intuitive: turn the knob to immediately select the desired temperature.
Conclusion
The TERMOFOL TF-H3 is an excellent choice for those seeking a reliable, manual thermostat without unnecessary complexity. With its precise control, anti-freeze function, and mechanical protection, it offers comfort, safety, and energy efficiency for electric underfloor heating.
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