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  1. C

    confounding central heating pressure drop problem

    Yep it was a leak. The original installer had placed a speedfit joint within the wall just 30cm from the boiler outlet and so over time the high temperature had caused the seal to break down. I'm amazed it even lasted the eight years the system has been in. The leak stopped when the pump was...
  2. C

    confounding central heating pressure drop problem

    Yep, I've checked the expansion tank pressure again and all is good. I have had the system sit at a constant 20psi for the last 6 hours with no drop. I'm beginning to wonder if it is the fact that a lot of the pipework sits well above any air bleed point and it is taking ages to purge itself out.
  3. C

    confounding central heating pressure drop problem

    Hi andytw, They are as per manual and sit within the boiler casing.
  4. C

    confounding central heating pressure drop problem

    Thank you for the quick response Bunnyman. Unfortunately there are no isolation valves on the boiler or system. I would also think automatically that it is a leak. If it is I am fairly sure it isn't the boiler as the heat exchanger is off the bottom of the boiler body so you can see all...
  5. C

    confounding central heating pressure drop problem

    Here we go. I don't often get stumped by something but this is doing my head in. Her we go: System: Sealed non condensing combi system with seven radiators all on the same level in a bungalow. All pipe work runs through the loft area and drops to the radiators by way of spurs. The boiler is a...
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