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  1. #1
    Join Date
    Mar 2007
    Location
    New Mexico
    Posts
    1,258

    Default Condensate Pump Discharge

    The pump is on the lower level. It is for air conditioning condensate only. The discharge point is into the vent in the attic space. The condensate is on the output side of the blower wheel. The conventional wisdom is that it shouldn't be directly connected to the sewer vent. My question is what is the down side? I'm trying to think of some scenario. It's not going to back up sewage to this point, or there is something crazy going on. Any air flow from the tube into the pump will escape out the top openings on the pump, as the blower is pushing air out of the pump. There is a trap on the condensate drain line. I guess they could add another trap where the drain line ties into the PVC.

    So, before I tell my client that it's wrong, what is our worst case scenario?

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    Last edited by Jim Robinson; 08-25-2014 at 05:28 PM. Reason: drag and drop not working
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    Jim Robinson
    New Mexico, USA

  2. #2
    Join Date
    Mar 2007
    Location
    Capistrano Beach, CA
    Posts
    1,458

    Default Re: Condensate Pump Discharge

    Just testing with a reply to this post.

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  3. #3
    Join Date
    Mar 2008
    Location
    Charlotte NC
    Posts
    2,303

    Default Re: Condensate Pump Discharge

    Quote Originally Posted by Brian Hannigan View Post
    Just testing with a reply to this post.
    Brian's post is probably better than mine, but here is what I was going to say;

    #1. Why did they go to so much trouble to send water to the city system to be processed? If it is a/c condensate, send it to a favorite plant or tree at the exterior (last I checked you are not in a wetland state).

    #2. Even though there are traps between the air handler and the sewer, why take the risk? Remember the Legionaries thing?

    JMHO

    The beatings will continue until morale has improved. mgt.

  4. #4
    Join Date
    Mar 2007
    Location
    Knoxville, TN
    Posts
    2,446

    Default Re: Condensate Pump Discharge

    Vern,
    Have you ever looked inside one of those condensate pumps. They are disgusting.


  5. #5
    Join Date
    Mar 2008
    Location
    Charlotte NC
    Posts
    2,303

    Default Re: Condensate Pump Discharge

    Quote Originally Posted by Jack Feldmann View Post
    Vern,
    Have you ever looked inside one of those condensate pumps. They are disgusting.
    Jim said the pump is on the lower level, probably can do away with the pump and gravity it to the exterior, besides I wasn't suggesting they drink it.

    The beatings will continue until morale has improved. mgt.

  6. #6
    Join Date
    Mar 2007
    Location
    Spring City/Surrounding Philadelphia area
    Posts
    3,473

    Default Re: Condensate Pump Discharge

    I see AC condensate drain lines from attic mounted air handlers regularly exhausting improperly. I've seen the same configuration Jim posted, I've seen a hole drilled in the soffit bay fascia board and the discharge line routed to the exterior roof gutter, I've seen the discharge line exhausting onto a roof surface. I simply tell the buyer the setup is wrong and document it calling for repairs.

    "It takes a big man to cry. It takes an even bigger man to laugh at that man". - Jack Handey

  7. #7
    Join Date
    Aug 2011
    Location
    Bennett (Denver metro), Colorado
    Posts
    1,394

    Default Re: Condensate Pump Discharge

    I just saw the city inspector sign off on a similar installation. I see this type of discharge several times a year. It's not that different than having the discharge going to the in-floor drain.

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