Recent content by belfastian

Yes open vented system with gravity hot water and pumped heating. then you are probably talking about an old style pressure relief valve. Open vent is 22mm system .The pipe work is over an expansion tank on top of water tank in attic Thank you for your advice.

Hello, so lets start of with i am not a plumber just a diy person. I have a external Oil fired central heating boiler (No Name) The system is an open valve. with a back boiler. It was installed in the early 1980` i only know this because i grew up in this house. So after all the defrost...