I have always been given to understand that at least one radiator in a system should not have a tvr fitted so as to avoid the pump and boiler running when all radiators were closed off.
However I was on a site of a tvr maker and they stated that all radiators could and should have them fitted.
Which is correct ?
However I was on a site of a tvr maker and they stated that all radiators could and should have them fitted.
Which is correct ?