I've got a recent S-Plan system (less than 4 years old) that has TRVs fitted to some of the rads. I want to go to an all TRV system.
Looking at the pipes, I've noticed what looks to be an automatic bypass between the primary after the pump but before the split and two motorised valves.
It passes through what to my unskilled eyes looks to be an automatic valve and then back to the primary return. It's in 15mm pipe.
Two questions:-
Am I going to run into problems if I put TRVs on all the radiators? I thought that by-passes needed to be 22mm?
Secondly, could this 15mm pipework and valve be the source of a noisy few minutes after system shutdown? Would a 22mm bypass cure this, or are the by-pass valves inherently noisy?
Christmas cheers in advance!
Looking at the pipes, I've noticed what looks to be an automatic bypass between the primary after the pump but before the split and two motorised valves.
It passes through what to my unskilled eyes looks to be an automatic valve and then back to the primary return. It's in 15mm pipe.
Two questions:-
Am I going to run into problems if I put TRVs on all the radiators? I thought that by-passes needed to be 22mm?
Secondly, could this 15mm pipework and valve be the source of a noisy few minutes after system shutdown? Would a 22mm bypass cure this, or are the by-pass valves inherently noisy?
Christmas cheers in advance!