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  1. P

    Urgent HELP!!! can's sort out pressure loss problem

    Boiler Vaillent VC183EH pressurised system running about 9 radiators and an underfloor system (separate pump) for one room. Problem with pressure loss needing frequent topping up. No leaks found although there are some runs under the suspended floor that I can't get to. No air in rads...
  2. P

    Central Heating pressure loss problem - HELP

    The pressure vessel is the flat red tank at the back of the boiler? How do I test it? The boiler has a system pressue gauge. This is what goes down to zero. I add water via the filling loop to increase the gauge pressure to around 2 bar to get the system going again. Are you suggesting this...
  3. P

    Central Heating pressure loss problem - HELP

    Boiler Vaillent VC183EH pressurised system running about 9 radiators and an underfloor system (separate pump) for one room. Problem with pressure loss needing frequent topping up. No leaks found although there are some runs under the suspended floor that I can't get to. No air in rads. First...
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