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Navien NR 240A

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Tony1953
Tony1953 Member Posts: 5
in THE MAIN WALL
constant water trickling out the condensate line when unit is off
could it be the heat exchanger? or 3 way valve?

Comments

  • DZoro
    DZoro Member Posts: 1,048
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    More than likely the heat exchanger. What boiler do you have?
    D
    kcopp
  • DZoro
    DZoro Member Posts: 1,048
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    My bad,, you have a Navien, how old? Have you had any water testing done?
    D
  • Tony1953
    Tony1953 Member Posts: 5
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    it is a NR240A
  • Tony1953
    Tony1953 Member Posts: 5
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    no error codes and it works normally
  • Tony1953
    Tony1953 Member Posts: 5
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    9 years old
  • EzzyT
    EzzyT Member Posts: 1,295
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    @Tony1953 yeah that sounds like a leaking heat exchanger
    E-Travis Mechanical LLC
    Etravismechanical@gmail.com
    201-887-8856
    kcoppMikeL_2delta T
  • Tony1953
    Tony1953 Member Posts: 5
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    what about the water inlet valve is not closing completely?
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,007
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    If your fill valve overfills the system, the pressure goes up. If the pressure goes over 30psi, your relief valve will open and leak water, not your condensate line.

    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab

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