Water Heater Vent Location? Am I an idiot?

Discussion in 'Water Heater Forum, Tanks' started by Murphy625, Aug 17, 2013.

  1. Murphy625

    Murphy625 Member

    Joined:
    Jul 7, 2013
    Location:
    Michigan
    Reading the manual for my power vent, it says:
    The venting system shall terminate at least 4 feet (1.2 m) below, 4
    feet (1.2 m) horizontally from or, 12 in. (30 cm) above any door,
    window or gravity air inlet into any building.

    Does this mean it must be 4 feet below AND 4 feet horizontally? or is it 4 feet below OR 4 feet horizontally?

    I'm having issues since there is a door or window about every 6 feet or so along the back side of my home.

    Thanks!
     
  2. Murphy625

    Murphy625 Member

    Joined:
    Jul 7, 2013
    Location:
    Michigan
    Really? No comments or answers on this???
     
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  4. LLigetfa

    LLigetfa DIYer, not in the trades

    Joined:
    Feb 6, 2011
    Occupation:
    Information Technology
    Location:
    NW Ontario, Canada
    I fail to understand how that can be ambiguous. If it is 4 feet away (beside or below) then you are golden. If it is above, it needs to be only 1 foot.
     
  5. Murphy625

    Murphy625 Member

    Joined:
    Jul 7, 2013
    Location:
    Michigan
    Well, I posted the same question in another forum and got a completely different answer saying it needed to be 4 feet under AND 4 feet horizontally from any window / door that opens.

    Two different forums, two different answers...
     
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    The hot exhaust fumes will want to go up. Wind will tend to move them any which way. They figure that 4' is enough offset for the fumes to be dispersed to a safe concentration. Personally, I'd not want it below an operable window or other opening.
     
  7. Murphy625

    Murphy625 Member

    Joined:
    Jul 7, 2013
    Location:
    Michigan
    ya, that's kind of what I figured.. I'm an engineer and its not rocket science but I thought it would be best to try and follow all the rules the best I could. I don't want to make any dumb preventable mistakes.

    thanks,
     
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