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    boxsmart's Avatar
    boxsmart Posts: 2, Reputation: 1
    New Member
     
    #1

    May 6, 2009, 03:43 PM
    Waterheater very little hot water & dripping relief valve
    Hi, I have installed a new electric waterheater 100 Litres supply pressure 6 bars, pressure regulating valve set at 4 bars pressure relief valve 5 bars, when electricity switched on thermal expansion increases pressure to 8 bars, pressure relief valve starts leaking correctly at approx 5 bars but still pressure has increased to 8 bars. My problem- I have to adjust waterheater thermostat so as not have the relief valve leaking too much water (bucket full per week) due too thermal expansion thereby the 8 bars reading, although the water comes very hot approx 65 to 70 degrees centrigrade there is not enough hot water for two persons to have a shower. The pressure regulating valve is placed about 1.5 metre from waterheater. I am thinking of inserting an expansion tank would this help with above.

    Please help with a solution thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    May 7, 2009, 03:34 AM
    I am thinking of inserting an expansion tank would this help with above.

    The expansion tank properly installed should eliminate your problem. Follow the factory install instructions.
    boxsmart's Avatar
    boxsmart Posts: 2, Reputation: 1
    New Member
     
    #3

    May 8, 2009, 09:38 AM
    Quote Originally Posted by hvac1000 View Post
    I am thinking of inserting an expansion tank would this help with above.

    The expansion tank properly installed should eliminate your problem. Follow the factory install instructions.
    Thanks for prompt reply I will procure an expansion tank if I can find an online seller in UK post & packing hopefully will be cheaper thanks again

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