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Greenstar 28 jnr 2006 ev re pressure

Discussion in 'Plumbing and Central Heating' started by nep, 30 Oct 2019.

  1. nep

    nep

    Joined:
    30 Oct 2019
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    Country:
    United Kingdom
    Hi
    in faq it says ...
    If you can't find one you can use a radiator bleed point, but that's in a pinch, because you'll be letting several litres of water out.
    Drain enough water from the system to drop the water pressure as read on the boiler gauge, to Zero. Close the drain cock.

    The boiler is the highest point in the CH upstairs so does this apply
    whats best to let the pressure out without letting air in
    surely bleeding a rad would just take out of the ev as the threads are small

    if i use the bigger drain on the boiler (isolating ch flow) will this let air in the system and if so do i bleed the boiler afterwards ie heat exchanger
    how do i open the drain is it pull

    do i open the ch isolation before filling from mains
    thanks
     
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