The loca­tion of the tem­per­a­ture sen­sors is crit­i­cal to the cor­rect oper­a­tion of the ther­mo­stat. If your mod­el has a remote air tem­per­a­ture sen­sor, you need to install it at a height of at least 1.5 m from the sur­face of the heat­ed floor, and gen­er­al­ly away from heat sources (for exam­ple, win­dows or radi­a­tors). And it is bet­ter to choose mod­els with an air tem­per­a­ture sen­sor built into the device itself — there is less trou­ble with them, you can imme­di­ate­ly install the ther­mo­stat in the right place.

How to choose a ther­mo­stat for under­floor heat­ing

Choos­ing a ther­mo­stat for under­floor heat­ing can be con­fus­ing

Preparatory work

Of course, before installing the ther­mo­stat, it will not be super­flu­ous to study the instruc­tions that any self-respect­ing man­u­fac­tur­er puts in the box with the device. This is also why experts rec­om­mend choos­ing cer­ti­fied devices from trust­ed com­pa­nies, and not chas­ing cheap ana­logues from Chi­na.

Before instal­la­tion, pre­pare the fol­low­ing things:

1. Cor­ru­gat­ed mount­ing tube. Usu­al­ly it comes with a warm floor, but any­thing can hap­pen. Uni­ver­sal diam­e­ter — 16 mm. But to deter­mine the length, you need to mea­sure the dis­tance between the instal­la­tion site of the device and the tem­per­a­ture sen­sor.
2. Reg­u­lar screw­driv­er.
3. indi­ca­tor screw­driv­er. It is use­ful in order to find out what volt­age is in the mains.
4. Fas­ten­ers.
5. Lev­el.
6. Mount­ing box and frame for light switch­es

Final­ly, we make a hole for installing the device and grooves in the wall and floor, which are need­ed for lay­ing pow­er cables and remote tem­per­a­ture sen­sors.

Electrical connection diagram

So, we are all ready to con­nect. We bring wires into the junc­tion box: a blue wire goes to “zero”, the phase is con­nect­ed to a black wire, ground­ing is con­nect­ed to a wire in yel­low-green insu­la­tion. Do not for­get to mea­sure the volt­age lev­el cre­at­ed between “zero” and phase — it should be 220 V.

Next, we’re going to cut the wires. This must be done in such a way that they pro­trude from the box by about 5 cm. Of course, the wires must be stripped.

After strip­ping, we con­nect the pow­er wire to the installed ther­mo­stat. The scheme is always in the instruc­tions and is dupli­cat­ed on the instru­ment case. We throw the phase wire at the desired con­tact, it is marked with the let­ter L. “Zero” is denot­ed by the let­ter N.

Now we need to con­nect the tem­per­a­ture sen­sor to the ter­mi­nals on the device. We recall that it must be laid in a cor­ru­gat­ed pipe.

To test the ther­mo­stat, you need to set the max­i­mum tem­per­a­ture on it. The click of the relay will let you know that the heat­ing cir­cuit is closed. That’s it, if the under­floor heat­ing and the ther­mo­stat are con­nect­ed cor­rect­ly, then you get a work­ing sys­tem.

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