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What size boiler?

Discussion in 'Plumbing and Central Heating' started by wayneward25, 10 Mar 2014.

  1. wayneward25

    wayneward25

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    Hi what size kw system boiler would I need to heat a 280 litre unvented indirect cylinder?
     
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  3. Hessles

    Hessles

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    What size is the coil in the tank and how big is your house?
     
  4. Hessles

    Hessles

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  5. wayneward25

    wayneward25

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  7. Hessles

    Hessles

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    How many litres?
     
  8. muggles

    muggles

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    It depends how fast you want to heat the water. 3kw will do, the coil is rated to 21.5kw, so anything between those two figures will be fine. What you should really be asking though, is how much power you need to heat your house rather than your cylinder
     
  9. wayneward25

    wayneward25

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    a 30kw combi is used at the minute to heat the house and water its fine for the heating but no good for the bathrooms
     
  10. Dan Robinson

    Dan Robinson

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    280 litre cylinder?

    210 is plenty... coupled with the Combi boiler to save money.

    Wire as an S-plan and leave the combi doing one of the ensuites of the kitchen.
     
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