HOT WATER BACKFEEDING INTO HEADER TANK VIA VENT PIPE. SEEMS TO BE HEATING HOT WATER EVEN WHEN ONLY RADS ARE PROGRAMED
central heating
- Thread starter wmbks99
- Start date
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Ah....2 points.as my old history teacher used to say...! 1 backflow could be blockage/incorrect pipe layout ....2 heat issue could be motorised valve/s problem...PS take CAPS lock off 
have a feel listen to pipes around motor. valves
have a feel listen to pipes around motor. valves DIYnot Local
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