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    Combi Boiler Gas pressure issue - Valliant 831

    A Vaillant 831 34kw boiler in a 2 bed 1 bathroom flat is completely mad, its like putting a jet engine in a mini!! it will pull 34kw for a few seconds and cut out from over heating- you'll never have enough demand on the boiler to satisfy the temps, you need a 15-24kw boiler.
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