Recent content by ajc01

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    Combi Boiler Gas pressure issue - Valliant 831

    hi, i advised incorrectly here. The pressure when the boiler fires up goes down to 14.5. It stays here and doesn't go back up as i have previously stated. Does this sound like inadequate gas supply getting to the boiler and will replacing the 15m that runs off the main artery with 22m...
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    Combi Boiler Gas pressure issue - Valliant 831

    One other thing here worth mentioning is that the display that shows the pressure level seems to be remaining the same ie. It is not dropping when the system is not in use. Is this correct? Cheers again :?:
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    Combi Boiler Gas pressure issue - Valliant 831

    My gas supply comes into the flat through the lounge (1 rad). Bedroom 1 is behind the lounge (1 rad). Then bedroom 2 (1 small rad – not working. then the bathroom (1*shower over bath + 1* towel warmer large). There is a narrow hallway that runs the length of the flat to the start of the kitchen...
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    Combi Boiler Gas pressure issue - Valliant 831

    Thanks Dave. Good points. Yeap, guess I don’t know unless I am constantly there. It was getting tested at the gas valve inlet (underneath the new boiler and where the old boiler was - 15m) and not by the gas meter which is outside the front door. Hope that helps. Does that indicate that the flow...
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    Combi Boiler Gas pressure issue - Valliant 831

    Thanks all for the feedback. Another question; am I doing any damage running the boiler/system (anything)as it is currently working and what does it mean generally? Everything seems to be working fine and the pressure generally is a lot better via all taps and shower. As mentioned it, just drops...
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    Combi Boiler Gas pressure issue - Valliant 831

    Thanks for your replies. They are helpful. When should have the fitter informed me of this in the process? Would of it been apparent to him b4 he fitted the boiler ie.by noticing that the gas pipe was 15m? I also had the system flushed and cleaned. Slight issue here as well. I pointed out a...
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    Combi Boiler Gas pressure issue - Valliant 831

    I was only told at the end of the installation of the issue. I was surprised that I wasn’t informed earlier in the process of fitting it. He was Corgi registered. He mentioned at the end that the gas supply was insufficient to run the system. It needed to be running of a 22m pipe rather the 15m...
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    Combi Boiler Gas pressure issue - Valliant 831

    i've just had a valliant 831 installed. The combi boiler is dropping (gas pressure) to around 13.5 when turned on. It's sitting around 21 when not in use and returns to this level post the drop to 13.5 after it has kicked in. The engineer will not certify it as it is dropping lower than the...
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