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UFH flow rate 'fix' - disconnect the manifold pump!?

  • 08-04-2020 10:33am
    #1
    steamboat
    Registered Users, Registered Users 2 Posts: 216 ✭✭


    Newly install Samsung/Joule heating system has been frequently erroring out due to low flow rate issues. The contractor responsible is telling me there was debris in the system which the plumber removed and then re-balanced the ufh system. He now considers the issue fixed.
    However he neglected to tell me that the ufh manifold pump was also disconnected. The sceptic in me is telling me this could be to mask the problem which hasn't really been resolved. See attached. The electrical connection to the pump is removed and taped up. I'm sure the system can't work as effectively without this. Getting radio silence from the contractor since, which is worrying. Any idea why he would leave the pump disconnected? Should I be concerned?


Comments

  • #2
    froshtyv
    Registered Users, Registered Users 2 Posts: 225 ✭✭froshtyv


    steamboat wrote: »
    Newly install Samsung/Joule heating system has been frequently erroring out due to low flow rate issues. The contractor responsible is telling me there was debris in the system which the plumber removed and then re-balanced the ufh system. He now considers the issue fixed.
    However he neglected to tell me that the ufh manifold pump was also disconnected. The sceptic in me is telling me this could be to mask the problem which hasn't really been resolved. See attached. The electrical connection to the pump is removed and taped up. I'm sure the system can't work as effectively without this. Getting radio silence from the contractor since, which is worrying. Any idea why he would leave the pump disconnected? Should I be concerned?

    It probably should not have been fitted in the first place.


  • #3
    steamboat
    Registered Users, Registered Users 2 Posts: 216 ✭✭steamboat


    Maybe, and if it's surplus to requirements then no issue - I just find it strange that they went to the trouble of installing the pump, with a dedicated electrical supply controlled by the stat only to disconnect it eventually. Any ufh manifold I see online or elsewhere has a mainfold pump. If it really is optional what benefit does it have?


  • #4
    froshtyv
    Registered Users, Registered Users 2 Posts: 225 ✭✭froshtyv


    steamboat wrote: »
    Maybe, and if it's surplus to requirements then no issue - I just find it strange that they went to the trouble of installing the pump, with a dedicated electrical supply controlled by the stat only to disconnect it eventually. Any ufh manifold I see online or elsewhere has a mainfold pump. If it really is optional what benefit does it have?

    This scenario happens a lot if there is no set of schematics issued from day 1, and depending on where the heat pump and underfloor are bought from.
    If the heat pump is bought from one supplier and the underfloor somewhere else, then you will get a plumber and electrician trying to figure out how to put it together.
    If they are all bought from the one place, at least it would be a full system which should have electrical and mechanical drawings to accompany the products supplied.

    There should be a pump further back on your heat pump, either in the outdoor unit or at your cylinder. There should be no need for another pump at the manifold.


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