Is this discharge legit? It comes out of the TPR and immediately takes a 90 degree turn and wraps around the tank and runs horizontal for a few feet then dumps into a drain stack. I am not sure if there is anything wrong with NOT going directly to the floor. All help is greatly appreciated.
No, it is wrong.
I would write it up as improper iunstallation and the discharge pipe was too small of a diameter.
This is a good candidate for the WTF thread.
Thanks Kevin! I appreciate the quick reply.
From the AO Smith Installation manual…
"The Discharge Line:
• *Shall not be smaller than the pipe size of the relief *
*valve or have any reducing coupling installed in the *
It’s wrong in several areas.
The discharge piping serving a pressure relief valve, temperature relief valve or combination thereof shall:
- Not be directly connected to the drainage system.
- Discharge through an air gap located in the same room as the water heater.
- Not be smaller than the diameter of the outlet of the valve served and shall discharge full size to the air gap .
- Serve a single relief device and shall not connect to piping serving any other relief device or equipment.
- Discharge to the floor, to the pan serving the water heater or storage tank, to a waste receptor or to the outdoors.
- Discharge in a manner that does not cause personal injury or structural damage.
- Discharge to a termination point that is readily observable by the building occupants.
- Not be trapped.
- Be installed so as to flow by gravity.
- Terminate not more than 6 inches (152 mm) above and not less than two times the discharge pipe diameter above the floor or flood level rim of the waste receptor.
- Not have a threaded connection at the end of such piping.
- Not have valves or tee fittings.
- Be constructed of those materials listed in Section 605.4 or materials tested, rated and approved for such use in accordance with ASME A112.4.1.
Thank you, William.
Thanks Neil, I appreciated the help.
Just asking. Does your report program have arrows? Or, do you use the hand in report?
That ain’t no Thing
I use the finger pointer in my reports. This is so much easier than marking stuff in the software. If I see something on a second story window I stand back, extend my pointer and take the photo. It’s ready for the report with no edits. Occasionally I use the arrows in the software if I am in a tricky spot. I should add, I do not use the software in the field. I compile my reports back at the office. I don’t want to wait on software in the field.
It’s also a health hazard direct cross-connection with the waste system (Neil’s item 1 above).
BTW the finger thingy is a good idea. Do they come with the middle finger extended?
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