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    Vailiant VCW-Sine 18 T3WFH Water Pressure

    Hi, Yes, thanks for reminding me of that, I had forgotten that bit of advice. I haven't started running the boiler yet but will look at it again when the 'damp' guy has finished his work. However, the water pressure has remained constant at 1 bar over night with the boiler shut down so it's...
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    Vailiant VCW-Sine 18 T3WFH Water Pressure

    :lol: I quickly discovered how to remove the left side casing and the expansion vessel valve was easy to see. After pressing the valve, nothing happened, no water, no air. I pumped air into the vessel using a bicycle pump then noticed the water pressure gauge had increased slightly. There was...
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    Vailiant VCW-Sine 18 T3WFH Water Pressure

    Thanks for the help guys. I now have a starting point and will get to it asap. Unfortunately the next few days are going to be spent with a gent from 'Chemfree' who is knocking plaster off all my internal ground floor walls to a height of a meter before injecting a new damp course. Rising damp...
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    Vailiant VCW-Sine 18 T3WFH Water Pressure

    Hi Guys, Thanks for the links and the advice. I feel much more positive about this now as it's the 'not knowing' that bugs me. Even if it turns out to be a major problem, I need to know. I have the front panel off the boiler and using an extension light I've tried to identify all the 'bits a...
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    Vailiant VCW-Sine 18 T3WFH Water Pressure

    Hi, The I last reference to this boiler on here seems to be a couple of years ago so I hope I'm not going over old ground. I recently bought a house with this boiler fitted and although the boiler operates OK, I've noticed the water pressure rises from about 0.75 bar to 2.5 bar in about 4 or 5...
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