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    slemish05's Avatar
    slemish05 Posts: 1, Reputation: 1
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    #1

    Dec 1, 2009, 03:47 AM
    Max radiators for 1 pressure vessel
    The radiators on my pressurised system have been bled, the pressure vessel set @ 1 bar system cold, with zero pressure in the heating system, pump vented, heating system re-pressurised to .75 bar.
    PROBLEM; the pressure rises to 3.5 to 4 bar when operational, so the 3 bar relief valve opens. Once the system returns to cold the system pressure is below zero.
    Any ideas

    Den

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