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Apartment heating problem

  • 18-10-2011 12:02am
    #1
    Merch
    Closed Accounts Posts: 3,327 ✭✭✭


    I am posting this thread about an issue someone I know is having with their hot water heating. (the room heating is seperate, its dimplex units on the walls so not an issue)
    The heating is electric (immersion heating) in an apartment. There is an issue with the pump heating up excessively and then needing to have its circuit breaker tripped manually (I am going to have a look but, I think from recollection when there before there is two pumps, I'll need to confirm that).
    Anyway, a plumber looked at it for them and said 800 euros to change the pump??:eek: He said the pump is tripping out due to overheating, after they declined to pay €800 offer, he told them there was a cheaper pump available. Im quite sure it is a standard fixed speed pump, it sounds like a rip off to me. He also suggested turning the stat in the immersion heater down to prevent the pump from tripping, even though they were turning it off manually?? If it tripped how could it overheat??

    Even when i say this it all sounds off, bit suspect to me about the tripping out, do pumps (or some pumps) have circuitry to shut them down in the event of an overheat?? maybe from excessive electrical heat but not hot water heat?? surely.

    They think there is noise coming from the pump too, I suspect the pump bearings are knackered and the pump isn't pumping.

    I'm guessing the system is indirect and unvented (what pressure is that at usually?) the plumber said the temp should not go over 65 C (seems reasonable for safety) but that this is the temp causing the pump to shut down?? I change the seals on my own heating system pump before, 800 sounds way too much for the job to me anyway.

    Any ideas?


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