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Circulating pump turned up to 3, hot rads downstairs balanced and air bled from the rads upstairs! All up and working now after the airlock was removed! Thanks for the help

Thanks Pump is downstairs and is fitted before the 3 port on the flow. Originally the CH was pumped, and strangely the gravity HW also had a pump which was wired into a cylinder stat and a 3 pin plug. I guess this was done as the run from the original boiler was lengthy and to aid a rapid...

Hi all had a new boiler installed during the week and converted from an old gravity hot water system with a circulating pump on the return converted to a Y plan system. To reduce the costs I've done the pipe work and the plumber will be back to check everything over. Radiators upstairs...