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  1. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    All up and running again now, radiators don't seem to have any air still, but I'll keep an eye on it. Thanks for the help from both of you!
  2. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    So I went with the logic after I found what looks like washing machine hose jubilee clipped onto the correct adaptors stuffed behind the radiator in the bathroom and, via the covered valve on the right side and a spare (dishwasher?) outlet, I have managed to get 1bar of water into the system...
  3. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    Yep, that is one of the videos I found too. Given we established closing the grey valve fully on the same pipe stops water for the hot taps, does this mean that pipe can be for both HW and CH? I've got a pretty rudimentary set of tools here (short term rental), I couldn't get anywhere with...
  4. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    Ok, I'll steer clear of the open ended valve. The far left outlet cap comes off by hand, as does the far right on the same pipe as the relief valve, so it looks tempting to link them, but I thought that was usually a fixed pipe... Every day is a school day. Do you think that would be safe to...
  5. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    Ah, that's it. That small grey valve is for hot water as turning it off stops "hot" water coming out at all. There isn't anything here for connecting a mains supply in temporarily. Could it be connecting left and right pipes, by the red valve on the left and grey valve on the far right? The grey...
  6. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    Thank you for that. I have tried as you state and not got any movement on the gauge. The grey handle opens easily, the brass plunger is pretty hard to press in, but I have got quite a bit of movement on it before it gets impossibly hard (I presume fully open). I can't see anything else which...
  7. W

    Increase pressure in Vaillant atmoTEC classic combi boiler

    We have error F.22 and can see the pressure gauge is low for the CH system. Boiler has shut off for both CH and HW. I've used other combi boilers before and had no trouble increasing the pressure, but I can't work it out with this one, is someone please able to help? From what I can tell, the...
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