"John Rumm" wrote in message
...
Christian McArdle wrote:

Really your room stat is redundant if you are going to use the TRVs


Except that this is not permitted without some other form of interlock,
as the boiler will continue to cycle even when all the TRVs are off,
which is wasteful of gas and not permitted by the building regulations.

and in some cases might no do the pump any favours either!

Thanks very much to all of you. I'm much happier now that I know what's
going on with my system.

John.