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Thread: water flow problem ?

  1. #1
    Automated Home Lurker
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    Dec 2006
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    Default water flow problem ?

    Hi need some help with my central heating system, the problem seems to be that you can hear the flow of water through some of the rads, i put the pipework in myself which is 22mm supply and return with 15mm going to the rads, the boiler i did not install which is a worcester bosch 35cdi,it is running 13 rads on three floors the boiler being on the ground floor all the rads have trvs fitted and the one in the bathroom is left open can anyone make any suggestions as how to stop this noise please :?:

  2. #2
    Moderator sunbeam's Avatar
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    Default Re: water flow problem ?

    are the returns open fully on the said rads,

    is the noise occuring when the rads are reaching temp (trv problem)

  3. #3
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    Default Re: water flow problem ?

    Hi thanks for your reply yes the returns are fully open, should they be fully open to allow the water to flow or do i need to just have one fully open ?

  4. #4
    Moderator sunbeam's Avatar
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    Default Re: water flow problem ?

    for a start all returns on all rads open full.

  5. #5
    Automated Home Lurker
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    Default Re: water flow problem ?

    Hi i have got all the returns fully open but the only way i can seem to reduce the noise is to partialy shut the trv or the lockshield valve, would it help if i had another automatic bypass valve fitted as well as the one fitted in the boiler already ?

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