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Hi All, Thanks in advance. I'm trying to set up my open vented central heating system after replacing a radiator. Prior to draining down the system I put some cleaner in and then inhibitor when I filled it again. The radiator I replaced has never heated up, it is in a downstairs...

Hi all, I'm trying to fault find on my CH system. As far as I can work out it is an open vent fully pumped system. The hot water tank is a double input Hercal boiler. On one side of the boiler, the side that has the three position motorized valve there is an output pipe quite low down the...