Gravity system cylinder downstairs?

Discussion in 'Plumbers' Talk' started by Gazowl1975, Jun 29, 2020.

  1. Gazowl1975

    Gazowl1975 Member

    Does this layout mean the hot water must have a pump on the domestic hot water draw off outlet i haven't been to the job yet but the customer has described it as above (must be oldish) a heat only boiler and the copper cylinder downstairs thanks?
  2. Timbo66

    Timbo66 Active Member

    If it's tank fed from the loft there probably won't be.
    Sounds like the water is heated by gravity circulation from the boiler and will have a pump for heating only.
  3. Heat

    Heat Screwfix Select

    It could be as Timbo66 said, or your customer is simply saying it is a gravity water system and the cylinder is downstairs.
    The location of a vented hot cylinder is irrelevant (as long as it is well below the cold water tank) as it is the cold water tank that is the head of water for the hot water through cylinder.
  4. Gazowl1975

    Gazowl1975 Member

    Wouldn't it give better flow to the upstairs hot tap if it were higher though ie upstairs? Thanks
  5. Isaac Cox

    Isaac Cox Member

    It all depends where the cylinder and taps are relative to each other and what pipes/sizes have been used.
  6. Heat

    Heat Screwfix Select

    No, not really any noticeable difference.
    Only things would make slight difference would be length of run of pipes/loads of elbows on pipes and if diameter of pipes was too small.

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