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  1. #1
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    Default water heater veny pipe slope

    guys

    is this negative slope allowed on the water heater vent pipe

    thanks

    cvf

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  2. #2
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    Default Re: water heater veny pipe slope

    Yes, looks fine to me.


  3. #3
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    Default Re: water heater veny pipe slope

    Quote Originally Posted by Raymond Wand View Post
    Yes, looks fine to me.
    Agree.

    I don't think there is any code regarding paint on the flue, but I don't think painting the flue is a best practice.

    If you choose not to decide, you still have made a choice.

  4. #4
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    Default Re: water heater veny pipe slope

    Quote Originally Posted by CHARLIE VAN FLEET View Post
    is this negative slope allowed on the water heater vent pipe
    No, a negative slope is not allowed. (That was the question.)

    However, that negative slope is short enough that it may not create a negative effect.

    More important may be the lack of supports/straps.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
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    Default Re: water heater veny pipe slope

    Sorry Raymond, I cast my lot with Jerry. Technically not correct but in practical application here will not cause a problem. Which may be what you want to note. If for no other reason than to demonstrate that you looked at it.

    That must be a real short furnace, or is just an illusion.


  6. #6
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    Default Re: water heater veny pipe slope

    Quote Originally Posted by Jerry Peck View Post
    More important may be the lack of supports/straps.
    Those runs don't look long enough to need strapping.
    Quote Originally Posted by Garry Sorrells View Post
    Sorry Raymond, I cast my lot with Jerry. Technically not correct but in practical application here will not cause a problem. Which may be what you want to note. If for no other reason than to demonstrate that you looked at it.

    That must be a real short furnace, or is just an illusion.
    Without speaking for Raymond, my comment was meant to more in line with Jerry's. The negative run here is too short to cause a problem.

    Funny you mention a short furnace because I thought the same thing.

    If you choose not to decide, you still have made a choice.

  7. #7
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    Default Re: water heater veny pipe slope

    Quote Originally Posted by Lon Henderson View Post
    Those runs don't look long enough to need strapping.
    Looks to me that two sections should be supported (strapped): the 45 degree run from the water heater and the nearly horizontal run from the furnace (or whatever that is from).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  8. #8
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    Default Re: water heater veny pipe slope

    I don't think its worth writing up as deficient. At first I thought the angle was the result of the angle of the photo, but upon second look I see the small horizontal run is off by maybe a 1/4".


  9. #9
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    Default Re: water heater veny pipe slope

    I think it would go in my report as an observation. 'If the WH produces a lot of condensation it might cause corrosion of the furnace vent'.
    Then it will depend on the lifestyle of the occupants, and probably they will do nothing about it.

    I wonder of the paint is concealing rust?

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  10. #10
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    Default Re: water heater veny pipe slope

    Quote Originally Posted by John Kogel View Post
    Then it will depend on the lifestyle of the occupants, and probably they will do nothing about it.
    Yeah just some ole Granola Eaters.

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  11. #11
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    Default Re: water heater veny pipe slope

    In my view condensation likely would not be a problem. The flue runs up through the house, so it's always warm, plus a naturally aspirated furnace with standing pilot coming up below the HW tee will help in keeping the flue warm. Paint is not going to hide corrosion in my opinion.


  12. #12
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    Default Re: water heater veny pipe slope

    Raymond,
    I stood on my chair trying to see down to the wee little furnace, but couldn't see if. Do I need to get higher above the screen to see it????? Or is it your Latitude above CO that gives the better perspective???


  13. #13
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    Default Re: water heater veny pipe slope

    A negative slope is never allowed, no matter how short of distance. Write it up, or when the brother-in-law plumber comes to visit and says "your home inspector should have caught that" you'll be paying to have it corrected.

    MinnesotaHomeInspectors.com
    Minnesota Home Inspectors LLC
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  14. #14
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    Apr 2011
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    Bozeman, Montana
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    Default Re: water heater veny pipe slope

    What do you suppose the odds are, that the original installation did not include an improper slope. But the lack of support is the result?


  15. #15
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    Default Re: water heater veny pipe slope

    or... what came first the furnace installation or the water heater? Perhaps the slope was correct until the furnace got installed and vice versa.


  16. #16
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    Nov 2010
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    California
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    94

    Default Re: water heater veny pipe slope

    I've never seen a shut-of valve in a PEX loop before. I agree with Jerry... strap it.


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