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How can I fix my unvented hot water cylinder?

The tundish/discharge pipe on the unvented hot water cylinder is constantly trickling cold water, causing a small over spill into the airing cupboard. What is the cause of the problem and how can I fix it?

Tony
June 2007

D.I.Y, Plumbing Hot Cold Small

sounds like the prv (pressure relief valve)
you need a engineer with a g3 cert to work on unvented systems.

hi-spec plumbing
June 2007

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Unvented Hot Water Cylinder Leaking - Fixes