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  1. N

    Expansion vessel pressure

    Sorry, misunderstood your previous mail, thought you meant that BG shouldn't have left PVR set at 3 bar. Thanks for advise.
  2. N

    Expansion vessel pressure

    Agile, Just to be clear of your instructions, open the drain under the boiler and then reduce the EXV, close the boiler drain and repressurise boiler to 1.5bar. Not sure what PRV is set at, boiler book states max pressure 3bar but not sure what the fitters set it to. Have noticed that...
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    Expansion vessel pressure

    Agile, The one that's in is grey and the one I've bought is red, what does the colour mean? UK, Thanks for the advise.
  4. N

    Expansion vessel pressure

    I'll give you the full story so far.. Woke up one morning and house was freezing and no hot water, checked boiler and pressure was down to 0.5, re-pressurised to 1.2, ran CH and HW cycle and worked ok. When cycle had finished the boiler pressure dropped to 0.5 when system cooled. Have been...
  5. N

    Expansion vessel pressure

    Sorry, should have explained what it's on. Unvented CH system. Checked pressure the other day using tyre gauge and it's showing 2.7bar.
  6. N

    Expansion vessel pressure

    Hi, Due to a suspected fault with my E.V. I got a replacement one but now it's arrived it turns out it's pre-charged to 1bar and the one I'm replacing is pre-charged to 3bar. Do I need to swap it for a 3bar unit or will it be ok?
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