How much leakage is needed from a central heating system before it loses pressure?
We have a Saunier Duval Thema Condens f30e combi boiler (fitted 2006)that loses pressure in matter of hours after refilling the system. System feeds a 3 bed Victorian house (8 rads).
We've tested the prv by putting a bag over the release pipe outside but this doesn't fill with water. We therefore assume we have a leak in the pipework of the system.
However we can't find a leak anywhere, even after having the floorboards up. How much of a leak are we talking about to depressurise the system in just a few hours? Eg, a cupful of water or a bucketful? I'm envisaging quite a large quantity of water, which I simply can find no evidence of.
Could there be any other cause of the depressurisation?
Many thanks
We have a Saunier Duval Thema Condens f30e combi boiler (fitted 2006)that loses pressure in matter of hours after refilling the system. System feeds a 3 bed Victorian house (8 rads).
We've tested the prv by putting a bag over the release pipe outside but this doesn't fill with water. We therefore assume we have a leak in the pipework of the system.
However we can't find a leak anywhere, even after having the floorboards up. How much of a leak are we talking about to depressurise the system in just a few hours? Eg, a cupful of water or a bucketful? I'm envisaging quite a large quantity of water, which I simply can find no evidence of.
Could there be any other cause of the depressurisation?
Many thanks