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Thread: WSHP TXV issues

  1. #1

    WSHP TXV issues

    Has anyone run across issues with a large number of TXV's on WSHP projects? I ran across this problem in Minnesota.

  2. #2
    Join Date
    Sep 2010
    Posts
    67
    What is the issue?What brand unit?

  3. #3
    Join Date
    Nov 2007
    Location
    Central Alabama
    Posts
    39
    Yes

  4. #4
    Failing within a year or two. Some black debris inside the piping.

  5. #5
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
    POE?

  6. #6
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
    Inside water piping or refrigeration piping?

  7. #7
    Quote Originally Posted by Tommy knocker View Post
    Inside water piping or refrigeration piping?
    Refrigerant piping near TXV.

  8. #8
    Join Date
    May 2009
    Location
    Savannah, Ga/H.H. Island, S.C.
    Posts
    1,408

    WSHP TXV issues

    Quote Originally Posted by HVACtech57 View Post
    Refrigerant piping near TXV.
    Split system or package?

    If a split system - Do you braze your refrigerant pipe connections with nitrogen flow?

    If not, oxidation will occur and can cause "debris" in the refer circuit.

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