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Moving my roof tanks

Discussion in 'Plumbing and Central Heating' started by iateyoubutler, 14 Apr 2021.

  1. iateyoubutler

    iateyoubutler

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    Afternoon all

    I`ve been in the process of sorting out my loft space, and have come to the conclusion that I would be better off moving the tanks (or cisterns.....for the purists!) to a different place.

    Right now, they are both right above the airing cupboard where the cylinder is. Is there any reason why they can`t be moved about 6 ft and the pipes extended horizontally to accommodate this? I thought I read somewhere that the two expansion pipes can only be vertical - don`t know if that`s true or not........

    I`m not interested in converting the system to sealed/unvented, that`s another can of worms.

    Thanks
     
  2. oldbuffer

    oldbuffer

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    1. The pipes don't have to be vertical, but they must rise continuously. Under no circumstances may they dip, and they must not have any valves on them.
    2. I'm assuming you mean the cold water storage cistern (CWSC) and the feed and expansion tank.
    3. The CWSC is likely to weigh around 1/4 tonne when full. It must be:
    3a. Supported on a flat base extending about 6 inches beyond the bottom of the CWSC in all directions. The base must be made of suitable materials. Marine ply is best, MDF of any sort is not appropriate.
    3b. The tank and base must be adequately supported. Over a structural wall is best.
    3c. Have a clear space above of 450 mm to allow for servicing.
    3d. Be insulated (not underneath) and have a full "byelaw" set of fittings.
    3e. Have proper warning / overflow pipe installed, with dip tube.
    3f. Have a part 2 float operated valve.
    3g. The draw off point is supposed to be situated in the base of the cistern. They often aren't.
    3h. If a shower pump is in use, its cold inlet should be connected to the CWSC below the level of the draw off point for the hot water cylinder. This is to avoid scalding if the CWSC runs dry.
     
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  4. denso13

    denso13

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    (y)
     
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  5. iateyoubutler

    iateyoubutler

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    Thanks for that, I can answer all of your points:

    1) That`s fine, understood
    2) I do yes
    3) Bl**dy hell!
    3a) It (they) are sat on a good platform covered t&g floorboards
    3b) Yes, right now it is sat on two 8" x 2" joists which span the whole length of the roof and are buried into the end walls, all I want to do is move along those joists, towards the end wall
    3c) That`s no problem
    3d/e/f) This lot was all new 9 years ago, so has all of those things
    3g) I think it`s about an inch or two from the bottom
    3h) I have a very old electric shower, which rarely gets used as I prefer a bath!

    Cheers :)
     
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