I have a vented gas central heated system. Currently when the domestic water is running at the same time as the heating, hot water overflows into the feeder/expansion tank in the loft, this does not happen when either the hot water or heating run separately.
I have a Potterton Profile boiler (dial set to 3), Dyson pump, ACL Lifestyle Mid Position motorised valve, a hot water storage tank/immersion heater (dial set to 55c) is part of the system.
Please advise how I can stop the hot water overflow.
I have a Potterton Profile boiler (dial set to 3), Dyson pump, ACL Lifestyle Mid Position motorised valve, a hot water storage tank/immersion heater (dial set to 55c) is part of the system.
Please advise how I can stop the hot water overflow.