Honeywell Room Thermostat Vs Ravenheat 120

[troy1007]

Hello
I have a Ravenheat 120 boiler with no room thermostat. I also have a redundant Honeywell room thermostat on the wall in the hall. Can anyone tell me whether it is possible to connect the two? I have looked at both, there are Four wires out of the therm. Red, Blue, Yellow and Earth. But only two connections on the boiler. Any ideas would be greatly appreciated, thanks.

 

[gasmick2]

Hi do not connect this type of room stat to this boiler ALL EXTERNAL CONTROLS FITTED MUST BE VOLTAGE FREE the old room stat was designed to switch 240v anyway all electrical work must be carried out by iee approved electrician so take his advice do not do it yourself or the warrenty will not stand
Look in your book that should have been left on the job on page 25 ref 5.13.1
mick