I'm installing a combi boiler with TRV's on all but one radiator as is required for safety reasons. I want the living room radiator controlled by a room stat so there will be no TRV on that radiator.
My question is, how do you size the radiators so that all the other rooms always reach the temperature set on their individual TRV's before the living room stat reaches its set temp and turns the whole system off?
I can only think that the other room radiators must all be overated so that they can always heat up their rooms before the living room gets to its temp or alternatively the flow to the living room radiator is restricted.
I feel I must be missing something and hope someone can put me right.
TIA
Steve