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OGBUzzard
Well I was told the boiler pumped the hot water. That's the bit I didn't get. So the water is fed back to the boiler after the cylinder then pumped to the taps? Didn't realise it worked like that. Only reason I said it was a y plan is because that's all the parts that are here minus the pump. There is a boiler, a 3 port valve, a room stat, a cylinder stat, and a supply feed for power on a spur.