Results 1 to 7 of 7
  1. #1
    Clay White's Avatar
    Clay White Guest

    Default WH TPR to floor drain

    Last edited by Clay White; 12-26-2007 at 10:06 AM.
    OREP Home Inspector E&O Insurance 2

  2. #2
    Brian Cooper's Avatar
    Brian Cooper Guest

    Default Re: WH TPR to floor drain

    I agree. The TPR should be plumbed outside of the house. Hot water venting inside the home is not acceptable to me. Nor is venting the TPR to a crawl space or basement.


  3. #3
    Richard Stanley's Avatar
    Richard Stanley Guest

    Default Re: WH TPR to floor drain

    See #2 & #5
    Is it one or the other? How could it be both? Is #5 just for freezing climates?
    Anybody got '06 commentary?

    P2803.6.1 Requirements for discharge pipe.
    The discharge
    piping serving a pressure-relief valve, temperaturerelief
    valve or combination valve shall:
    1. Not be directly connected to the drainage system.
    2. Discharge through an air gap located in the same
    room as the water heater.
    3. Not be smaller than the diameter of the outlet of the
    valve served and shall discharge full size to the air
    gap.
    4. Serve a single relief device and shall not connect to
    piping serving any other relief device or equipment.
    5. Discharge to the floor, to an indirect waste receptor
    or to the outdoors. Where discharging to the outdoors
    in areas subject to freezing, discharge piping
    shall be first piped to an indirect waste receptor
    through an air gap located in a conditioned area.
    6. Discharge in a manner that does not cause personal
    injury or structural damage.
    7. Discharge to a termination point that is readily
    observable by the building occupants.
    8. Not be trapped.
    9. Be installed to flow by gravity.
    10. Not terminate more than 6 inches (152 mm) above
    the floor or waste receptor.
    11. Not have a threaded connection at the end of the piping.
    12. Not have valves or tee fittings.
    13. Be constructed of those materials listed in Section
    P2904.5 or materials tested, rated and approved for




  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: WH TPR to floor drain

    Quote Originally Posted by Richard Stanley View Post
    See #2 & #5

    Is it one or the other? How could it be both?

    2. Discharge through an air gap located in the same
    room as the water heater.

    5. Discharge to the floor, to an indirect waste receptor
    or to the outdoors. Where discharging to the outdoors
    in areas subject to freezing, discharge piping
    shall be first piped to an indirect waste receptor
    through an air gap located in a conditioned area.


    Richard,

    It is not 2) *or* 5), it is 2) *and* 5).

    First, it must discharge through an air gap located in the same room as the water heater.

    Second, that discharge (from the air gap device) may go to any of the locations listed in 5).


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

  5. #5
    Richard Stanley's Avatar
    Richard Stanley Guest

    Default Re: WH TPR to floor drain

    I see it now - thanks.
    So this means that the drain can no longer be piped directly to the exterior.

    Last edited by Richard Stanley; 11-22-2007 at 07:35 AM.

  6. #6
    Richard Rushing's Avatar
    Richard Rushing Guest

    Default Re: WH TPR to floor drain

    P2803.6.1 Requirements of discharge pipe.
    The outlet of
    a pressure relief valve, temperature relief valve or combination
    thereof, shall not be directly connected to the drainage
    system. The discharge from the relief valve shall be piped
    full size separately to the outside of the building
    or to an indirect
    waste receptor located inside the building.......The discharge shall be installed in a manner that does not cause personal injury or property damage and that is readily observable by the building occupants



  7. #7
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: WH TPR to floor drain

    Quote Originally Posted by Richard Rushing View Post
    P2803.6.1 Requirements of discharge pipe.

    The outlet of
    a pressure relief valve, temperature relief valve or combination
    thereof, shall not be directly connected to the drainage
    system. The discharge from the relief valve shall be piped
    full size separately to the outside of the building or to an indirect
    waste receptor located inside the building.......The discharge shall be installed in a manner that does not cause personal injury or property damage and that is readily observable by the building occupants
    Richard,

    Your post is from the 2003 IRC. Here is the full text of THAT section.

    P2803.6.1 Requirements of discharge pipe.
    The outlet of a
    pressure relief valve, temperature relief valve or combina-
    tion thereof, shall not be directly connected to the drainage
    system. The discharge from the relief valve shall be piped
    full size separately to the floor, to the outside of the building
    or to an indirect waste receptor located inside the building. In
    areas subject to freezing, the relief valve shall discharge
    through an air gap into an indirect waste receptor located
    within a heated space, or by other approved means. The dis-
    charge shall be installed in a manner that does not cause per-
    sonal injury or property damage and that is readily observ-
    able by the building occupants. The discharge from a relief
    valve shall not be trapped. The diameter of the discharge pip-
    ing shall not be less than the diameter of the relief valve out-
    let. The discharge pipe shall be installed so as to drain by
    gravity flow and shall terminate atmospherically not more
    than 6 inches (152 mm) above the floor. The outlet end of the
    discharge pipe shall not have a valve installed.

    Richard Stanely's post of that section is from the 2006 IRC. Here is the full text of THAT section.

    P2803.6.1 Requirements for discharge pipe.
    The discharge
    piping serving a pressure-relief valve, temperature relief
    valve or combination valve shall:
    1. Not be directly connected to the drainage system.
    2. Discharge through an air gap located in the same
    room as the water heater.
    3. Not be smaller than the diameter of the outlet of the
    valve served and shall discharge full size to the air
    gap.
    4. Serve a single relief device and shall not connect to
    piping serving any other relief device or equipment.
    5. Discharge to the floor, to an indirect waste receptor
    or to the outdoors. Where discharging to the outdoors
    in areas subject to freezing, discharge piping
    shall be first piped to an indirect waste receptor
    through an air gap located in a conditioned area.
    6. Discharge in a manner that does not cause personal
    injury or structural damage.
    7. Discharge to a termination point that is readily
    observable by the building occupants.
    8. Not be trapped.
    9. Be installed to flow by gravity.
    10. Not terminate more than 6 inches (152 mm) above
    the floor or waste receptor.
    11. Not have a threaded connection at the end of the piping.
    12. Not have valves or tee fittings.
    13. Be constructed of those materials listed in Section
    P2904.5 or materials tested, rated and approved for
    such use in accordance with ASME A112.4.1.

    Notice the differences, they are many and they are great.



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

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •