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Boiler Pressure Dropping

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    #32
    Wayne_M
    Registered Users Posts: 35 ✭Wayne_M


    Got this fixed at the weekend - new expansion vessel required, €150 all-in. Working perfectly since.

    Recommend this guy, John Mcgrath @ http://greystonesplumbing.ie/ - prompt service, reasonable price.

    Thanks to all for their feedback.


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    #33
    drag0n79
    Registered Users Posts: 196 ✭✭drag0n79


    Wayne_M wrote: »
    Got this fixed at the weekend - new expansion vessel required, €150 all-in. Working perfectly since.

    Recommend this guy, John Mcgrath @ http://greystonesplumbing.ie/ - prompt service, reasonable price.

    Thanks to all for their feedback.

    Nice one. Glad it wasn't a leak. :)


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    #34
    Wayne_M
    Registered Users Posts: 35 ✭Wayne_M


    drag0n79 wrote: »
    Nice one. Glad it wasn't a leak. :)

    Technically it wasn't a leak, but it was losing water.

    Here comes the science bit:

    Each time I topped up the water/pressure using the tap in the hotpress I was increasing the amount of water in the system.
    When the heating was on, the water expanded causing the excess to flow out an 'overflow' pipe at the front of the house. Thus when the water cooled, the pressure would drop again due to having lost the 'excess' water. A functioning expansion vessel prevents this from happening.

    :)


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    #35
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,257 Mod ✭✭✭✭Wearb


    Wayne_M wrote: »
    Technically it wasn't a leak, but it was losing water.

    Here comes the science bit:

    Each time I topped up the water/pressure using the tap in the hotpress I was increasing the amount of water in the system.
    When the heating was on, the water expanded causing the excess to flow out an 'overflow' pipe at the front of the house. Thus when the water cooled, the pressure would drop again due to having lost the 'excess' water. A functioning expansion vessel prevents this from happening.

    :)

    Amazing :rolleyes:

    Please follow site and charter rules. "Resistance is futile"



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    #36
    Gargamello
    Registered Users Posts: 30 ✭Gargamello


    Carrie81 wrote: »
    We had the same problem in Eden gate & had to get a new expansion vessel fitted. It's a red cylinder put In the hot press as that was the easiest place to fit & have had no problems all winter since it was done.


    Can you PM me who you used to fix the problem Carrie81? I have the same problem in Eden Gate. Thanks.


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