Recent content by diystar1980

There was a manual stat in the hall and all radiators free of TRVs. I changed the stat to a Honeywell DT90e and installed modern Drayton TRVs on all rads. Your recommendation of balancing is good one and I better do that before looking into bypass valve and the 3 port valve.

I've tried closing TRVs on all rads except the one that was not getting hot enough (living room) and it did result in that radiator getting piping hot correctly. This ruled out the possibility of any clog in the pipes and any air in the rad itself. Then I tried turning lockshield on all upstairs...

That's right, half a turn down. Or fitting new auto bypass valve instead of current gate valve could be another option.

Yes, we have fitted TRVs on all rads. There is one room thermostat. However we keep TRVs on two the radiators in living room at Max, rest are set to various levels between 2-5. One of our rads in living room isn't getting enough hot water hence I was trying to userstand the reason why this...

Yes it is, I did some search on bypass and came across automatic bypass valve and now I know it's purpose. Thanks

Hiya, My home (1980s build) has gravity fed central heating system. I understand the purpose of pump and the Y plan 3 port motorised valve near hot water tank in the airing cabinet. But what I don't get is why there is a split before the 3 port motorised valve. I am referring to the split shown...