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Myson Apollo differential temperature

Discussion in 'Plumbing and Central Heating' started by wilroda, 2 Jan 2007.

  1. wilroda

    wilroda

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    I have a Myson Apollo 80B boiler.
    I measured the input and output temperatures with a type K thermocouple mounted on the copper pipes as close to the boiler as possible.
    The inlet temperature measures 52 deg C and the outlet temperature measures 57 deg C . Therefore a 5 deg temperature difference.
    I believe that on a new boiler this difference should be 11 deg C.
    Bearing in mind that i believe the boiler to be approx 10 years old is this acceptable or inefficient?
     
  2. DP

    DP

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    Are you measuring at the boiler or a remote radiator?
     
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  4. wilroda

    wilroda

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    Hi
    I have measured it at the boiler.
     
  5. Slugbabydotcom

    Slugbabydotcom

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    So long as it is no more than 11ÂșC its ok.
    It may mean that there is room to close your by-pass slightly to get more efficacy from your pump
     
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