Upgrading a mech thermostat to a programmable one

[theedventure]

Hi everyone

I'm new here, because I need some advice.

I live in France but the advice I need i think is not France-specific. I have a mechanical thermostat that i'd love to upgrade to a programmable one, but i am struggling to understand what kind of model will be compatible (or even if there is one compatible) with the two wires (230v) that I have coming out of the wall attached to the mechanical thermostat.

At times, it seems to me that a 'radio' model with two wires arriving and then a radio unit to measure temperature might work, but then I get confused between all the different types of wires that may be arriving from the boiler.

http://www.amazon.co.uk/Delta-Dore-...3352319&sr=8-1&keywords=Delta+Dore+DEL6050417

Any help much appreciated asap!
Ed

 

[greasedmonkey]

If you have 2 wires at your existing thermostat, one is probably live and the other is the switched live back to the boiler. The thermostat is essentially a switch. You can get battery powered 2-wire thermostats cheap enough. I wouldn't know where to look in France, but here in the UK you can get programmable 2-wire thermostat from Screwfix for less than £30.

You might try asking in the heating and plumbing section and may get more answers.

 

[theedventure]

Hi - to add more detail, the wiring connected in my mech thermostat is as follows:

4
5
1 BROWN
3
2 BLUE

And on the inside of the 'stat it is marked that the connections are [L] and [N].
3 seems to be the switch and 4, the internal connection of the [L]ive.[/img]

 

[EFLImpudence]

You should get a remote programmer/thermostat.

The receiver is fitted near the boiler or wiring centre and the sender unit can go anywhere.

The existing cable to the thermostat position is redundant.

 

[Charnwood]

What an ugly piece of kit that is!!

Try this alternative:

http://www.amazon.co.uk/Honeywell-W...ie=UTF8&qid=1383667640&sr=8-1&keywords=cmt927