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Hammering in underfloor heating pipes

  • 27-01-2015 7:29pm
    #1
    MajorMac
    Registered Users Posts: 12 ✭


    One of my underfloor zones seems to have air in it. There is a hammering in the pipes and it's preventing one room from heating.

    I have a call in to the engineer unipipe recommended (original installer no longer in business) and would like to know what is involved in venting the system. Does the whole system need to be flushed or just the loop going to the zone that is not heating and what am I looking at cost and time-wise to fix?


Comments

  • #2
    G2ECE
    Registered Users, Registered Users 2 Posts: 232 ✭✭G2ECE


    It would be unusual for air in an UF circuit to cause a hammering noise. Could it be a fault with the blending/mixer valve and the pump trying to push water through??? Just a thought.


  • #3
    MajorMac
    Registered Users Posts: 12 ✭MajorMac


    G2ECE wrote: »
    It would be unusual for air in an UF circuit to cause a hammering noise. Could it be a fault with the blending/mixer valve and the pump trying to push water through??? Just a thought.

    No alarms/faults showing on the HP display... I have increased/ decreased the temp on the stat in the room that is not heating and it is opening the actuator on that loop at the manifold. Would air in that loop prevent the room from heating?


  • #4
    galwaytt
    Registered Users, Registered Users 2 Posts: 12,794 ✭✭✭✭galwaytt


    MajorMac wrote: »
    No alarms/faults showing on the HP display... I have increased/ decreased the temp on the stat in the room that is not heating and it is opening the actuator on that loop at the manifold. Would air in that loop prevent the room from heating?

    Just pop off the actuator on that loop and let it open manually and see if it makes a difference.

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  • #5
    MajorMac
    Registered Users Posts: 12 ✭MajorMac


    galwaytt wrote: »
    Just pop off the actuator on that loop and let it open manually and see if it makes a difference.

    Removed the actuator 2 days ago and no difference at all in room temp.


  • #6
    MajorMac
    Registered Users Posts: 12 ✭MajorMac


    MajorMac wrote: »
    Removed the actuator 2 days ago and no difference at all in room temp.

    Just looking at the flow meters on each return valve and many of them are muddy looking inside while others are crystal clear. Is that normal?


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  • #7
    Dtp1979
    Registered Users, Registered Users 2 Posts: 12,840 ✭✭✭✭Dtp1979


    MajorMac wrote: »
    Just looking at the flow meters on each return valve and many of them are muddy looking inside while others are crystal clear. Is that normal?

    Shouldn't be muddy by right


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