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Thanks for your reply, I read that an expansion vessal is a optional extra, as far as I can see we havn't got one. However, we are losing water thru the overflow tho how much I can't say because of the damp weather. If we don't have an...
Hey Guys,
I wonder if you can help.
My boiler keeps its running pressure when in the water boiling mode and when cool stands at 1.5 bar, which I was advised to maintain.
When being used in water and central heating modes the pressure always drops right down the scale to about a quarter...