Plumbers gas pipe
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  1. #1
    Join Date
    Jan 2008
    Location
    Outside The Motor City
    Posts
    666

    Plumbers gas pipe

    this was the only 1 out of 8 units piped with a sediment trap.
    Attachment 54062
    Last edited by hvac248; 12-14-2009 at 05:20 PM.
    NO Brains NO Headaches

  2. #2
    Join Date
    Jul 2009
    Posts
    247
    Dont see that one catching much sediment. I'm wondering if it isnt a pressure test point or a line purge point???

  3. #3
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,168
    unreal, it blows me away as to how stupid some installers are.

  4. #4
    Join Date
    Mar 2007
    Location
    Sterling Heights, MI
    Posts
    140
    Nice new black pipe going into a rusty piece at unit. Afterall, those darn reducing tees should come with instructions. Or maybe they couldn't read the Chinese directions.
    Better Service Through Knowledge...
    RSES, The HVACR Training Authority. www.rses.org

  5. #5
    Join Date
    Aug 2004
    Location
    S.E. Pa
    Posts
    6,127

    Exclamation improper piping

    First of all, the tee shown is not a sediment trap. In order to be considered a sediment trap, it must have a 90* vertical axis so the leg functions as a trash can using gravity.

    That pipe must be protected from the element such as painting or wrapping.

    The pipe is inadequately supported.

    The issue of sed. traps outdoors is controverial. Some AHJs prohibit it fearing condensate freezing while others don't see liquid condensate but do see particulate foreign matter that does get catch in the traps. The code just says all gas utilization equipment must have sed. traps except fireplaces.

    Hearthman

  6. #6
    Join Date
    Feb 2009
    Location
    lancaster ca
    Posts
    68
    whats with the condensate or lack there of???

  7. #7
    Join Date
    Aug 2008
    Posts
    322
    Quote Originally Posted by houtonjr View Post
    whats with the condensate or lack there of???
    NAT. gas has alot of moisture in it last winter here in okl. I had alot of reg. freeze up no gas to the buildings so you can see how the sed. trap could freeze and rupture.

  8. #8
    Join Date
    Feb 2009
    Location
    lancaster ca
    Posts
    68
    Quote Originally Posted by mike robinson View Post
    NAT. gas has alot of moisture in it last winter here in okl. I had alot of reg. freeze up no gas to the buildings so you can see how the sed. trap could freeze and rupture.
    i was refering to the condensate line not being there they put a P-trap but nothing else

  9. #9
    Join Date
    Jan 2009
    Location
    Indiana
    Posts
    3,228
    Quote Originally Posted by houtonjr View Post
    i was refering to the condensate line not being there they put a P-trap but nothing else
    Normal commercial rooftop installation of condensate drain. nothing more is needed, water runs onto roof just as rain would fall onto it.

  10. #10
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    give the guy some credit

    the cut-off is

    upstream

    of the union & tee.
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  11. #11
    Join Date
    Jul 2009
    Location
    In a mechanical room....
    Posts
    1,887
    In Florida we have to drain condensate off of the roof at least in a roof scuffer or it will not pass code.

  12. #12
    Join Date
    Nov 2006
    Posts
    523
    Up here most units just have the ptrap off the condensate dripping onto the roof. Sometimes a patio block will be put under it to dissipate the water so its not constantly hitting the same point on the roof.

  13. #13
    Join Date
    Dec 2007
    Location
    Northeast Wisconsin
    Posts
    482
    Same here. Just pipe it out onto the roof appropriately to meet the manufacturer requirements and nothing more. From time to time the customer or we run a longer drain to a particular point for various reasons. 99% are like the unit pictured in this thread.

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