3.5 when running the heating. There is a drip from the pressure relief pipe but not much. If I drain the system and re fill it works fine but then over time returns. Can anyone help thanks John
Water Heaters - Watts - 3/4 Pressure Relief Valve
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Answers & Comments
I would replace the relief valve or remove it to see if it is plugging up.
Buy some cleaner and run it through if you have not done it in a while.
Do the other anyway.
Thanks I managed to talk to Alpha and they suggest the expanion vessel to. Bad news is my boilet has rear flue so it cannot be replaced unless boiler is completely de commissioned. So options seem to be a seperate expansion vessel or as a stop gap to leave one radiator with some air in the top to act as an expansion vessel. Thanks to you all for your help.
i work for alpha if your up yorkshire i can take a look