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Air Source Heat Pumps

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  • Andy_WSM
    Andy_WSM Posts: 2,217 Forumite
    Part of the Furniture 1,000 Posts Uniform Washer Rampant Recycler
    Wall bracket arrived today and has been assembled and put on the back wall of the bungalow ready. Tomorrow I will put a hole through for the 2 pipes and pre-run the pipes with insulation, ready to move the unit and connect up on the weekend. (Will be too hung over New Years day!)
  • have you drain hose so it goes down to floor level or into a drain pipe
    If you found my post helpful, please remember to press the THANKS button! --->
  • Swipe
    Swipe Posts: 5,646 Forumite
    Part of the Furniture 1,000 Posts Photogenic Name Dropper
    A stupid question but how you disconnect the pipes without the refrigerant escaping? I take it you'll also need to recharge the system in such cases as this?
  • Swipe wrote: »
    A stupid question but how you disconnect the pipes without the refrigerant escaping? I take it you'll also need to recharge the system in such cases as this?

    Presumably this a self contained unit and the pipes are only for the heat transfer liquid - just water? As I understand, it is only the split unit air-con types that have external pipes containing refrigerant.
  • Andy_WSM
    Andy_WSM Posts: 2,217 Forumite
    Part of the Furniture 1,000 Posts Uniform Washer Rampant Recycler
    greendwarf wrote: »
    Presumably this a self contained unit and the pipes are only for the heat transfer liquid - just water? As I understand, it is only the split unit air-con types that have external pipes containing refrigerant.

    Correct :)
  • Andy_WSM
    Andy_WSM Posts: 2,217 Forumite
    Part of the Furniture 1,000 Posts Uniform Washer Rampant Recycler
    have you drain hose so it goes down to floor level or into a drain pipe

    Yes, it will work out that it can run neatly down the side of the conservatory, which will also keep it slightly warmer than the surrounding air.
  • Andy_WSM
    Andy_WSM Posts: 2,217 Forumite
    Part of the Furniture 1,000 Posts Uniform Washer Rampant Recycler
    Due to a change in available helping hands, the heat pump move is happening today!

    I have just disconnected all the pipework & cables and am awaiting my "lift" out of the loft onto the back wall. I should have it back up & running before it gets dark this afternoon!
  • Do make sure you have a drain at the lowest point in the water pipe to ensure the heat exchanger can be emptied in case you have problems in sub zero temperatures.
  • He shouldnt have any problems, mine has been running like this for 3 yrs in sub zero temps and 3ft of snow around the unit, the inside casing of the heat pump always drains away as when it is defrosting it thaws the inside out.
    If you found my post helpful, please remember to press the THANKS button! --->
  • Maybe not clearly written on my part, but he needs to be able to drain his heating hot water from the heat pump should it not be able to run, so as to prevent freezing water in the heat exchanger.
    Just in case he felt it less important in the loft.
    It needs to have isolating valves on the flow and return pipes, and a drain tap/!!!! to empty the heat exchanger.
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