I currently have a Siemens RWB29 Programmer attached to my boiler. There is also a Siemens rotary dial room thermostat which isn't working very well. I have got myself a Honeywell THR870C to replace it. Unfortunately I'm having trouble working out what the wiring should be.
The THR870C manual has 8 different wiring diagrams in it, none of which seem to say they are for replacing an existing room thermostat.
The Siemens RWB29 manual doesn't have much information either.
Is it possible to use that THR870C as a replacement for my current thermostat? If so how do I wire it up?
The THR870C manual has 8 different wiring diagrams in it, none of which seem to say they are for replacing an existing room thermostat.
The Siemens RWB29 manual doesn't have much information either.
Is it possible to use that THR870C as a replacement for my current thermostat? If so how do I wire it up?