Gas-combi system; rads in all rooms (incl kitchen and bathroom) plus hall downstairs (but not the landing). I was going to fit TRVs to all rads except the one in the hall, where a roomstat would be fitted. Or should the roomstat (and no TRV) be fitted in one of the downstairs living rooms instead?
Secondly - as I haven't got as far as selecting a room thermostat but am at first-fit stage with the general rewire - can anyone confirm whether I'm correct in thinking that a single length of 1.0mm2 T&E cable between boiler and thermostat positions will suffice (with presumably a second such cable as a spur from a ring main, unless the item is battery-powered only?)
I may want to go for a combined roomstat/timer unit - or would that be more awkward for a muppet to install than a separate roomstat and going with the boiler manufacturer's built-in programmer option?)
Thanks a lot David