"Kostas Kavoussanakis" wrote in message
news:Pine.SOC.4.64.0710222214450.3969@r3000...

Hi,

I would like to replace my old (80s) Honeywell room thermostat with the
907. It's a very common model.

On the old thermostat there are 5 terminals (top to bottom): 5 2 3 4 1. Of
these, 2 (Neutral), 3 (Switch Live) and 1 (Live) are connected.

I understand that the 907 only accepts two wires.

Is my installation compatible with the 907? The installation manual
suggests current needs to by 8A; how does one check that?

http://europe.hbc.honeywell.com/prod...7uk07r0906.pdf

Am I right that this a DIY job? I know I need to switch the boiler off at
the mains and drop the fuse while the wife and kids are out shopping :-)

Thanks,

Kostas

You will only need "Live" and "Switched Live". Tape up the neutral as it is
not needed as the thermostat is electronic. Don't worry about the 8 amp
aspect unless you are switching electric heating. It means less than 8
amps - and I guess your boiler has a 5 amp fuse.