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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Electrical Questions >> Install Room Thermostat https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1481633354 Message started by TimBr on Dec 13^th, 2016, 12:49pm

Title: Install Room Thermostat
Post by TimBr on Dec 13^th, 2016, 12:49pm

Current heating set up is
Condenser Boiler in Kitchen(not combi); Siemens RWB9 timer for CH and HW also in kitchen(but across room from boiler).

I want to fit a room thermostat in the lounge and would rather not fill up with wires, so was hoping to install a wireless one.

What option (assuming there is more than one) makes the most sense.?
I was hoping I could simply get a wireless receiver to plug in , in place of my RWB9 timer-only switch. This uses what was once a stndard backplate so strikes me as the simplest for a DIY job. That said I can't find one.
So do I remove the RWB9 altogether and replace with with a receiver near the boiler and use a programable thermostat in the lounge.?

Title: Re: Install Room Thermostat
Post by TimBr on Dec 13^th, 2016, 1:12pm

Perhaps in fact I'm wrong. I was thinking the RWB9 had a backplate of the same dimension of the module itself, but having taken it off, I see the backplate is much smaller.
So can I expect that any wireless receiver should fit to this.

Title: Re: Install Room Thermostat
Post by thescruff on Dec 15^th, 2016, 10:52am

The RWB is a programmer with standard wiring but you would need to modify it to suit.

More information would help.

Make model of boiler.
Make model of Motorized valves or type (2 x 2port or 1 x 3 port)

4 in the programmer controls the MV which in turn controls the boiler and pump. I would be surprised if you don't have a room stat.