Discuss Why is water flowing through my expansion pipe in the Central Heating Forum area at PlumbersForums.net
I have an open vented solid fuel system. It all started when hot water and steam was blowing out through the expansion pipe in the attic (bungalow). I ran the hot water off and thinking it was the pump, had it replaced. But when I put on a fire yesterday the hot water was flowing through the expansion pipe but the f and e tank was not overflowing. The water in my cylinder did not get hot. Just warm. Some of the radiators got slightly warm. It's a dual system but I haven't used the oil heating in years. I've attached a few photos of the cylinder and pump. The house is about 30 years old. The solid fuel was connected about 15 years ago during an extension build. When I run the pump even cold there is a water flowing through the expansion pipe. The tank is not overflowing.Some clear pictures of how your expansion pipe and cold feed connects to system would be useful.
Plus a sketch of pipework?
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