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  1. #1

    Smelly combustion exhaust gas

    I have a Trane 5 ton rooftop that emits a strong odor from the combustion blower. The unit is about 2 years old. There is no combustion air restriction and the manifold pressure is correct. Anybody ever experience this problem?

  2. #2
    Join Date
    Nov 2006
    Location
    Southeastern Pa
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    16,998
    Not so much on a Trane RTU, but it is usually indicative of a combustion issue that must be discovered and corrected.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  3. #3
    Join Date
    Jun 2004
    Location
    Howell, Michigan
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    16,158
    Get your Testo out and combustion test it. Amazing what you can find sometimes, even on a new unit.

  4. #4
    Join Date
    Jul 2009
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    Columbia, MD
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    3,379
    Quote Originally Posted by HeyBob View Post
    Get your Testo out and combustion test it. Amazing what you can find sometimes, even on a new unit.
    Amen.

    I use my analyzer on every unit.

  5. #5
    Join Date
    Nov 2008
    Location
    baltimore
    Posts
    26
    Without a combustion test how can we help you? Check gas pressure inlet and outlet verify what nameplate calls for. The analzyer will give you o2, co,co2, efficency as well other things depending on model. Get back to us with those numbers and someone should be able to give you a place to start.

  6. #6
    Join Date
    Feb 2006
    Location
    USA
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    4,365
    One thing I never got in deep with is combustion analysis. I've decided I need to really get heavier into this. Any of you guys have good links to informative reading and recommendations on what type of combustion analyzer to get?

    Sent from my SGH-T999 using Tapatalk 2

  7. #7
    Join Date
    May 2002
    Location
    evansville indiana
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    942
    There was a local guy that died from co poisoning,,,,while working on a roof top... I wouldn't breathe to much of that until you test it
    mikeacman

  8. #8
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    Do you have a link to that news story?

  9. #9
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    May 2002
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    evansville indiana
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    Quote Originally Posted by timebuilder View Post
    Do you have a link to that news story?
    not sure it made the news ,,,one of my coworkers brother in law was the victim in the neighboring county....osha is involved. As well a bunch of lawyers

    I'll talk to him and see what I can dig up ,,,happened last year ,,,
    mikeacman

  10. #10
    Join Date
    Nov 2006
    Location
    Southeastern Pa
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    Quote Originally Posted by mikeacman View Post
    not sure it made the news ,,,one of my coworkers brother in law was the victim in the neighboring county....osha is involved. As well a bunch of lawyers

    I'll talk to him and see what I can dig up ,,,happened last year ,,,
    You mean in 2011?

    You can send me a PM with company name, etc, if you like. I want to look at the OSHA file.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  11. #11
    Join Date
    May 2002
    Location
    evansville indiana
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    I believe it happened in Henderson KY BTW
    mikeacman

  12. #12
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    May 2002
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    evansville indiana
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  13. #13
    I know I am getting too much combustion air. I don't know why. Just thought someone may have run across this situation before.

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