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General Discussion Area / Re: Ancient Central Heating System
« on: 19 June 2025, 07:39:13 »
As you say, possibly a siezed motorised valve keeping the CH on if it has such a thing.
Often in older systems they just turned the pump off when CH not required and they could then circulate a bit by gravity.
Sounds worth investigating the header tank, if it has one. Often they'd have a primatic hot water tank by which means the CH would be topped up and they're properly bonkers, and very prone to getting the system in a bad way if the primary and secondary water don't stay separate.
Does she have an immersion heater that would cover the hot water demand this time of year?
Kevin
Often in older systems they just turned the pump off when CH not required and they could then circulate a bit by gravity.
Sounds worth investigating the header tank, if it has one. Often they'd have a primatic hot water tank by which means the CH would be topped up and they're properly bonkers, and very prone to getting the system in a bad way if the primary and secondary water don't stay separate.

Does she have an immersion heater that would cover the hot water demand this time of year?
Kevin


