Disconnecting an open-vented hot water cylinder.

20pictures · 18 Jun 2004

I am soon to replace my corroded hot water cylinder (open-vented system) & would have to disconnect the primary HW circuit.

On leaving the tank, the return pipe joins a bypass & then the return from the radiators, all on the same floor. Do I have to drain all my radiators to prevent backflow when I disconnect the cylinder? There is no gate valve to close here.

oilman · 18 Jun 2004

Shut off the radiators at both ends, then the radiator water will remain while you drain the rest of the pipes.

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Disconnecting an open-vented hot water cylinder.

20pictures

oilman

DIYnot Local

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