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Hi It is the pressure gauge underneath that is showing the readings, This is what they replaced last week. The vessel happens to sit above the megaflo and we have no other tank in the loft yes to the CH query :) The engineers said they had pumped up the system. They then said to keep and eye...

Hi, I have a Ultimate Glow worm 100FF and a Megaflo. My problem is that when the system is cold the expansion vessel above the Megaflo reads at 0, when the system is heating up it goes up to 2 bar pressure and then reduces down. to 1.5 after a while. When the heating and hot water go off...