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Pressure testing a wet underfloor heating system

Discussion in 'Plumbing and Central Heating' started by Mr_T25, 26 Oct 2018.

  1. Mr_T25

    Mr_T25

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    I will run several wet UFH circuits (ground floor to be screeded system and 1st and 2nd floor pro-fix panels and then to be screeded / levelling compound).

    Is it best to pressure test these? If so, what pressure does UFH normally operate at, is it between 1 and 2 bars like a boiler?

    The above questions are just for my own interest, builders will be doing the work.
     
  2. PrenticeBoyofDerry

    PrenticeBoyofDerry

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    It will be working pressure of the boiler, then factor in.
     
  3. Mr_T25

    Mr_T25

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    What do you mean “then factor in”?

    So if the boiler is 1 bar, does that mean my UFH needs no more then one bar pressure?
     
  4. dilalio

    dilalio

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    The MI's of the UFH system you have selected should provide guidance.
     
  5. Mr_T25

    Mr_T25

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    They will but I want to research before and that’s the point of a discussion forum like this.
     
  6. dilalio

    dilalio

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    But my point is that the value and method to which it is pressure tested will vary according to manufacturer.
    For example, Wavin instructs 1 bar for 45 mins; then 6 bar for 15 mins; then 2 bar for 15 mins.
    And, as your warranty/guarantee depends on following the MI's, that's exactly what you must do.
     
  7. Mr_T25

    Mr_T25

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    The floor heating warehouse (supplier) has provided no such instructions.
     
  8. dilalio

    dilalio

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    Perhaps you should call them and ask for such :rolleyes:
     
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