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I think the darker grey levers are the ones for setting upper and lower temp limits as these slide out. However I have just tried doing this, moving a lever etc and the valve still turns fully as though nothing had happened. It is the light grey plastic lever which only slides out about 1cm...

Thanks for all your considerable knowledge D_Hailsham. At the moment I will leave the wiring until I have the need to get a fully qualified electrician around. If it works then thats OK. I also posted a question COMPAP THERMOSTATIC RADIATOR VALVE QUESTION so if ayone could help me out on...

Thanks for all your help D_Hailsham. One last set of questions Im afraid. What does it mean by binding / rebinding. Does it mean to link the relay and the wireless stat together? In a way a bit like hooking up a laptop to a wireless internet box via the IP addresses etc? Also what does...

I have no idea at all to be honest. I have "phoned a friend" who said that 1) Brown live goes to first L 2) Then a 1mm wire loop needs to go from L to L 3) Then a 1mm wire loop from second L to A 4) Then the black switch goes to B I dont understand about the strange link from...

Wiring Diagram

There are 4 wires actually but the earth is not conected at all. The wall stat doesn't have any form of identification at all apart from a interlocking C and t symbols which are at 90 degrees rotation to the right (??) There are 4 possible slots for the wires to go into The wires are as...

Thanks D_Hailsham The rad I mean is on the landing at the top of the stairs. I have shut this down to about setting 2 because it gets hot and I don't want the stat to turn off as a result. The boiler is only about 4 years old and is a Vailant thermoCompact. The timer was new this year...

The thermostat is based at the top of the stairs. The landing is a typical "reverse back" format to the stairs and leads around a corner to bedrooms. The radiator (with TRV fitted) is at the corner - it is normally set quite low because its one of the few rads which seem to throw out heat well...

Thanks Whitespirit66 Does that mean that the Part P qualified plumber just disconects the wiring from the wall mounted and fits it to the wireless receiver near the programer? :?:

I have a wall mounted thermostat at the top of the stairs where there is a radiator within 4 metres. As the location is relatively enclosed the heating doesn't seem to be working very efficiently. Is there any mileage if I changed to a wireless thermostat instead and if I do how does that...

Ruth wrote "Hello there, I've just moved into a house, which has Comap thermostatic radiator valves. The valves have a grey and a black plastic slides that pull out from the bottom of the knob. Could anybody tell me the purpose of these please? I've had a look on the internet but no joy...