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Discuss Can a buffer tank still provide heat without the boiler/heat pump working? in the Central Heating Forum area at UKPlumbersForums.co.uk.

  1. GregKaye

    GregKaye New Member

    Same issue and I'd really appreciate the help.
    heating plan.png
    In a system like this, or something else you can suggest, how would the buffer tank be enabled to provide its stored heat without the boiler/heat pump consuming energy to create heat?
    Please advise.
    Thanks.
     
  2. king of pipes

    king of pipes Trusted Plumber GSR

    It cant the boiler needs to fire to raise the temperature in the buffer tank once the temperature drops, some form of renewable energy incorporated may reduce running costs but will raise the install cost. Kop
     
  3. GregKaye

    GregKaye New Member

    Thank you. If the boiler is not firing, how would the heat in the buffer tank drop? Would the water still be moved into the cylinder and rads?
    heating plan cropped.png
    In this cropped image would the pump pushing away from the buffer tank continue to work if the heat source (boiler/heat pump) was switched off?
     
  4. Sparkgap

    Sparkgap Active Member

    If the tank is already hot there's no problem, the pump will just draw hot water around the system until the tank is depleted.
    My suggestion for controls would be to have the boiler controlled through a cylinder stat about halfway down the buffer tank, that way the boiler will not short cycle and will work more efficiently.
     
  5. king of pipes

    king of pipes Trusted Plumber GSR

    Why would you just heat the buffer up and switch everything off ? the temperature in the buffer will loose a few degrees a day it really depends how good the insulation on the buffer is. Kop
     
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