Now that I've gone mad and introduced a separate heating zone, how do I wire a frost-stat in?
If I just connect it to both valves, then both will be forever linked, and they'll be no point having two. If I connect it to only one of them, then the pipework hanging off the other will never get warmed.
Do I need to get the frost stat to switch a relay with two connectors or something? I can't find anything like that in the usual places, but then I don't know what to look for!
Alternatively, are there frost stats with two separate outputs? Then there'd be no problem AFAICT.
We've never had a frost stat before, but it seems a waste to leave the heating on when we go away - and the weather we're having at the moment, I can imagine it might be needed in the middle of a normal night!
Any hints on the best positioning for a frost stat also gratefully received.
Cheers, David.