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  1. #1
    Join Date
    Jan 2001
    Posts
    770

    Trane voyager troubles

    I have a ych240a3h0ab. The unit is cycling on limit switch. I have 65 return 130 supply. This is in a church diffucult to get cfms. The gas at manifold -.02. I am going to clean evap coil. I did take duct apart and airflow seems ok. I may have to traverse. The heat exchanger looks ok. This unit is 20 years old. The inducer, ignitor and high limit were replaced. Does anyone know what the temp rise should be?? Any thoughts

  2. #2
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,285
    I don't have the spec for temp rise, but it does sound to me as though you are on the right track looking at airflow...
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  3. #3
    Join Date
    Nov 2007
    Location
    Mississippi
    Posts
    1,394
    Sounds like airflow to me too.

  4. #4
    Join Date
    Jul 2007
    Location
    Virginia
    Posts
    5,838
    Quote Originally Posted by hvac17011 View Post
    Does anyone know what the temp rise should be?? Any thoughts
    25-55 deg.

    Send me an email (address is in my profile) and I will send you some info on this unit.
    Last edited by rundawg; 11-14-2012 at 08:19 AM.

  5. #5
    Join Date
    Dec 2003
    Location
    Northern VA
    Posts
    622
    All diffusers open?
    "Iron sharpeneth iron..."

  6. #6
    Join Date
    Jun 2006
    Location
    midwest
    Posts
    126
    I dont know if you meant -.2 I.W.C. , but thats the spec on that unit.

  7. #7
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,193
    I seem to find a lot of fire dampers tripped in church's. I would be looking at airflow as well.

  8. #8
    Join Date
    Dec 2003
    Location
    Northern VA
    Posts
    622
    Quote Originally Posted by Dchappa21 View Post
    I seem to find a lot of fire dampers tripped in church's. I would be looking at airflow as well.
    I have serviced alot of churches over the years and also have commonly found airflow issues. Certain wings and rooms get closed off so that only the office area(s) which are occupied daily are left open in an attempt at economy. If you have a two stage gas on that unit you might want to disconnect the hi fire if you find this airflow situation.
    "Iron sharpeneth iron..."

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