Hot water affecting CH


Postby Hamuel » Fri Feb 03, 2012 12:05 pm

When the hot water goes on, the radiators cool down considerably. I don't have a combi boiler. I gather I need something called a gate valve. Can anyone help?
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Postby plumbbob » Sat Feb 04, 2012 8:54 am

Chances are the DHW cylinder does not have a lock shield valve fitted and all the hot water is circulating this system rather than the radiators.

This valve is usually sited near the inlet to the cylinder coil and is a gate valve with a red topped wheel.
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Postby Hamuel » Tue Feb 07, 2012 8:38 am

Many thanks!
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