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solar system pressure loss

  • 02-04-2016 11:07am
    #1
    prf
    Registered Users Posts: 47 ✭


    I have 30 tube kingspan solar feeding 300 lt tank.The fluid was changed 18 months ago and system was pressurised to 1.5 bar.Expansion vessel was also pre charged at this time ,everything worked brilliantly but now I notice that the pressure when the system is idle has dropped to 0.5 bar but it rises to 1.0 bar when the system seeing solar gain(pump running).I am wondering if this is normal and what to do about it?.Any ideas,thanks for advice


Comments

  • #2
    PeteHeat
    Registered Users, Registered Users 2 Posts: 648 ✭✭✭PeteHeat


    Possible there is a small glycol leak in the system.
    .


  • #3
    quentingargan
    Registered Users, Registered Users 2 Posts: 1,627 ✭✭✭quentingargan


    The variation in pressure might also indicate failure of the expansion vessel.


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