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Mend Chaffoteaux & Maury Britony Combi Boiler Water Pressure Heating System

Chaffoteaux & Maury water pressure loss?

Britony Combi chaffoteaux & Maury system . Hot water tap system keeps losing pressure! Radiator system fine but water pressure on hot water tap system keeps dropping to below 1 Bar so that we get hunting clanging banging noises from pipes.... if i top up system from mains feed it goes quiet again but then will suddenly drop without any visible leaks !!! driving me nuts any ideas please

Doug C
April 2010

Chaffoteaux & Maury Chaffoteaux & Maury Britony Combi Heating, Home Heating Systems Combi Boiler Water Pressure Heating System

It could be the pressure relief valve that is passing a small quantity of water. The outlet of this valve should be piped through the wall of your house. Find the end of the outlet pipe & see if it seems wet or is actually dripping. I checked mine by attaching a plasic bag for a couple of days (it filled with about half a cup of water in that time). If it is passing, you need to replace it. The problem I've had is that it was replaced about three months ago - everything was OK but has started leaking again & am not sure what is causing this.

Hope this helps.

Brian Ninness
September 2010