room thermostat Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[tomsie45]

:( Hi, I am wanting to fit a room thermostat to my boiler. The boiler is a glowworm hideaway 60b, I have a honeywell t6360 room thermostat to fit to it. I just dont know where to start with the electrical connections. The boiler is wired to the programmer, from there to the pump and to a fused socket. Any help would be appreciated, thank you.

[marrtin]

The roomstat's contacts go in series with the timeclock's DHW contacts and will also need a neutral and earth connection.. You have not mentioned what programmer is fitted so cannot advise in more detail.

[marrtin]

The roomstat's contacts go in series with the timeclock's DHW contacts and will also need a neutral and earth connection.. You have not mentioned what programmer is fitted so cannot advise in more detail.

Be careful of mains electrics please.

[tomsie45]

Hi, the programmer is also a honeywell. There are three cables coming out of the rear of it, one goes to the pump, one to the boiler and one to a fused socket.

[marrtin]

If yours is a gravity type system, and only in that case, the installation is simple.

Turn off the fused switch and remove the fuse. Check power is off!

Remove the timeclock and disconnect the +ve brown lead that connects to the pump. Connect pin one of the stat at that position.

Connect pin 3 of the stat to the brown pump wire.

Connect a neutral to pin 2 of the stat (it will work without this, but not accurately).

Connect earth at both ends.

[tomsie45]

Many thanks for your help Marrtin. :D

[tomsie45]

Hi Marrtin
I connected my thermostat as you instructed but the boiler stays on continually even when I turn the thermostat down.

[marrtin]

The thermostat will not shut off the boiler. If it did you would not get any hot water if the room was warm.

The stat stops the pump running and therefore acts exactly the same as if the central heating side of the timer was off. The boiler will only go off if the hot water is off too.