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help, combi boiler, need to drain rads

Posted: Tue Aug 28, 2007 2:37 pm
by gjc
Combi boiler sealed system. Need to drain 2 radiators. Can I just turn off rad valves and drain as you would with a conventional system?.

Posted: Wed Aug 29, 2007 4:56 pm
by htg engineer
yes you can remove the radiators, like you would with any other, the only difference is you may need to top up the boiler pressure. You will definately have to when replacing the radiators.

This will be either a built in combi fill, or a external filling loop, situated on or near the boiler.