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- 3 Feb 2005
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I recently drained my system by opening up one of the drain cocks downstairs, then repressurised my expansion vessel to just over 1 bar and then refilled the system up to 1 bar using the filling loop. I then bled the rads and topped back up to 1 bar again.
It generally works fine now except for the fact that I'm now seeing the pressure when cold creep up slowly, something like 0.1 or 0.2 bar each day. I checked the filling loop and it doesn't appear to be leaking. I can't leave the filling loop removed though as the non return valve between the boiler and filling loop is leaking, so the filling loop is stopping this water from escaping.
Any ideas what could be causing this gradual increase in pressure each day? Could anyone offer any tips on what I could check please? I'm currently having to release some water from the system each week to bring the pressure back down to 1 bar when cold, which obviously isn't ideal. Would appreciate any advice.
Thanks,
Steve
It generally works fine now except for the fact that I'm now seeing the pressure when cold creep up slowly, something like 0.1 or 0.2 bar each day. I checked the filling loop and it doesn't appear to be leaking. I can't leave the filling loop removed though as the non return valve between the boiler and filling loop is leaking, so the filling loop is stopping this water from escaping.
Any ideas what could be causing this gradual increase in pressure each day? Could anyone offer any tips on what I could check please? I'm currently having to release some water from the system each week to bring the pressure back down to 1 bar when cold, which obviously isn't ideal. Would appreciate any advice.
Thanks,
Steve