Can you run a power vent exhaust line downward?

Discussion in 'Water Heaters and Softeners' started by anticlmatic, Oct 23, 2018.

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  1. Oct 23, 2018 #1

    anticlmatic

    anticlmatic

    anticlmatic

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    Swapped out a water heater and the existing vent hole is at least a foot below where I can elbow off the top. I read the specs and it mentions pitch of horizontal for condensate purposes but nothing about 45ing it down and out as ok/not ok. It’s about 3 feet from the wall, I’d avoid drilling another hole in the house if I could.
     
  2. Oct 24, 2018 #2

    ExtraMilePlumbing

    ExtraMilePlumbing

    ExtraMilePlumbing

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    that goes against city inspection,
    I would sell customer new vent line
     
  3. Oct 24, 2018 #3

    Jamesplumbing06

    Jamesplumbing06

    Jamesplumbing06

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    No it can’t vent at that hard of angle. The angle will cause the exhaust to get sucked back in fresh air intake. That will cause gas to burn ineffiecent. You may never know it but some gas will be wasted. Best is to open a new hole at correct height.
     
  4. Oct 24, 2018 #4

    anticlmatic

    anticlmatic

    anticlmatic

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    Thanks guys, I’ll get out the hole hog.
     
  5. Oct 25, 2018 #5

    FishScreener

    FishScreener

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    You’re instructions should give details on venting. Also, check with the AHJ, on their interpretation of the code.
     

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