need to change pressure vessel but unsure if it's a 10litre or a 12litre or what difference it made if any, i know it's 300mm in diameter, went to re-charge it and the water was flying out where the air should go in,
grant oil combi 90mk11 expansion vessel
- Thread starter dd1975
- Start date
I think it's a 12, you can check by viewing a manual on their website. In any case they're too small unless you have a very small system. If you can, fit a 25 litre one on the CH return pipe.
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