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  1. J

    Ariston MicroCombi Expansion Vessel Pressure?

    Cheers! Can this be done when the water in the system is warm, eg. heating had been on this morning? J
  2. J

    Ariston MicroCombi Expansion Vessel Pressure?

    Hi, Following suggestions in a previous thread I have tried to solve my pressure loss problem by recharging the exp. vessel. My symptoms were: since I drained the system to swap a rad I have been loosing pressure, dropping below .75 Bar which is the cut off for the boiler. Initially it was...
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