RF Room Thermostats

17 Aug 2004
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United Kingdom
I want to replace my existing room thermostat with an RF one. The existing one is in one of the warmest rooms in the house rather than the coldest room. We have TRV's on most radiators. So I want to put the new RF Room Stat in the coldest room that does not have a TRV and then control the heat in all the other rooms using the TRVs.

Can anyone recommend which is the best 5/2 Day Programmable RF Room Thermostat for the money ?
Also my current Room Thermostat has four wires going to it, would all the wires be needed for the new RF Room Thermostat ?
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Digistat RF3 usually works.

Why wires? You asked about Radio gadgets.

If your plan was to fit the radio receiver in place of existing thermostat - won't work. Receiver needs Permanent Live. Better to fit it alongside wiring centre and wire it in directly.
Not nice to program though. Look at Honeywell CM67RF
If you got a Vaillant boiler you can also use VRT 340f. I've got this solution, and it works excellent! :)
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What if I where to leave the heating control, on the timer box, to be on CONSTANT HEAT. Could I then wire the Receiver in tothe existing thermostat wiring ?
If you are putting in a programmable thermostat, yes thats the way it can be done. The thermostat then sets the on/off times.
Did you misread what I said or are you after a 'second opinion'?
The receiver for the RF thermostat I suggested REQUIRES PERMANENT LIVE. So will most others. You will NOT find this on the wiring to a room stat. You MIGHT find a spare core in the cable which you could connect to a permanently live terminal in the wiring centre but why bother? It's better to put the receiver near the rest of the controls. Then you have everything (except the roomstat) in one place when something goes wrong.

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