Hot Water Heater Discharge Configuration.

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1

Originally Posted By: Allan
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Can anyone tell me if there is IRC code that specifies how many 90 degree Els there can be in the T&P discharge line?


I have a home I inspected and there are at least 6 - 90 degree Els between the T&P valve outlet and the termination point of the discharge line

2

Originally Posted By: escanlan
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Quote:
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 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 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. The discharge from a relief valve shall not be trapped. The diameter of the discharge piping shall not be less than the diameter of the relief valve outlet. 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.


There is no limit on the number of elbows but note the mention of "drain by gravity flow". The elbows should not be unsafely installed or be redirected in an upward manner at any point to prevent gravity flow. It would not hurt to review the manufacturers literature to make sure there is no prohibitions against this.

There could be an IPC rule on this but I don not have access to the IPC. Hopes this helps some at least. Also I have 5 on mine here at the house as a result of the run taken.

--
Manny (Emmanuel) Scanlan

Knowledge is power, but sharing knowledge brings peace!
3

Originally Posted By: escanlan
This post was automatically imported from our archived forum.


Allan,


By the way, are you coming to the June 21st NACHI North Texas meeting? It is in Grapevine and we have a really great lineup planned.

If you send me your email address I can make sure you are on our notification list. We will be sending out reminders starting this week.

email me at info@nachint.org

--
Manny (Emmanuel) Scanlan

Knowledge is power, but sharing knowledge brings peace!