How to install a warm floor thermostat

A thermostat is the brain of a warm floor: it controls heating and maintains the set temperature. Correct installation affects operational accuracy and safety. Let's look at the main steps and common mistakes. Important: connection to the 220V electrical network must be performed by a qualified electrician.

What you'll need

A thermostat, a floor sensor (usually included), a mounting box, a corrugated tube for the sensor, a screwdriver, and a voltage indicator. Before starting work, always de-energize the line.

Where to install the thermostat

The thermostat is mounted on the wall in a standard mounting box, usually at a height of 0.9–1.5 m from the floor. Choose a location away from direct heat sources, drafts, and direct sunlight — otherwise, the built-in air sensor will show an incorrect temperature.

Floor sensor installation

The floor sensor is laid in a corrugated tube between the turns of the heating cable, at an equal distance from adjacent lines and no closer than ~50 cm from the wall. The corrugated tube allows the sensor to be replaced if necessary without opening the floor. The end of the corrugated tube in the heating zone is sealed to prevent glue or mortar from entering.

Wiring diagram

Three groups of wires are connected to the thermostat: power (phase and neutral), load (heating mat or cable wires), and a floor sensor. The exact diagram and terminal locations are specified in the instructions for a specific model — for example, for the Y-603H Wi-Fi touch thermostat. The connection to the network must be performed by a qualified electrician in compliance with regulations.

Common mistakes

• Sensor laid too close to the wall or right next to the cable — incorrect readings.
• Sensor laid without corrugated tube — impossible to replace.
• Exceeding the permissible load of the thermostat (usually up to 16 A) — a contactor is needed for powerful systems.
• Thermostat installed near a radiator or in a draft.

Conclusion

Proper installation means the correct location on the wall, careful installation of the floor sensor in a corrugated tube, and connection according to the instructions by an electrician. Our catalog has thermostats for any budget — we will help you choose a model for your system. Delivery throughout Tashkent and all of Uzbekistan.