International Association of Certified Home Inspectors
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| Plumbing Contains discussions about plumbing. |
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#1
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Will someone please list all the acceptable materials for use for TPRV
extentions. thankyou. |
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#2
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Galvanized steel, hard-drawn copper, CPVC
Stephen Stanczyk NACHI #05113031 WSDA License #71043 (253) 241-0602 phone calls answered until 10pm Puyallup Home Inspector
Tacoma Home Inspector Olympia Home Inspector Pierce County Home Inspector Thurston County Home Inspector King County Home Inspectors Washington Home Inspectors |
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#3
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Thanks Stephen,
My code check book says that you can use the same materials allowed for water distribution, but it doesn't list pex (it lists the same materials that you listed). I have seen pex used frequently and write it up as wrong, but it is accepted for water supply. Do you write up pex when used for TPRV extension? |
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#4
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Pex is fine for the TPR discharge.
"Never underestimate the difficulty of changing false beliefs by facts." |
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#5
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It depends on your AHJ, but Mr. Larson is correct - PEX is generally accepted for this use. . .
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#6
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thanks guys
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#7
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The problems with PEX are minor.
It needs to be secured more than the other materials since it is more flexible. It is also affected by sunlight so if the water heater is in say a utility room with a window, the PEX should be covered. If the TPRV is routed to the exterior as it should, the termination point in sunlight should be protected or a different material. For the supply lines, there must be 18" of metallic or approved piping between the water heater and any PEX. It makes sense that it would be for the TPRV also. Just a thought. Stephen Stanczyk NACHI #05113031 WSDA License #71043 (253) 241-0602 phone calls answered until 10pm Puyallup Home Inspector
Tacoma Home Inspector Olympia Home Inspector Pierce County Home Inspector Thurston County Home Inspector King County Home Inspectors Washington Home Inspectors |
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#8
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Quote:
Could you provide the source for this requirement, please? ____________________________________________ "An Education, not just an Inspection" Larry Kage Lake Ann (Traverse City), Michigan 49650 231 929 3525 Professional Inspector and Infrared Thermographer serving the Traverse City, Michigan area and beyond. ITC/FLIR CERTIFIED BUILDING SCIENCES THERMOGRAPHER ITC/FLIR CERTIFIED LEVEL 1 THERMOGRAPHER
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#9
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Uniform Plumbing Code (2003). I know some don't go by the UPC but some of the manufacturers quote this in their installation guidelines. There are parts made specifically for water heater and PEX connections..
Stephen Stanczyk NACHI #05113031 WSDA License #71043 (253) 241-0602 phone calls answered until 10pm Puyallup Home Inspector
Tacoma Home Inspector Olympia Home Inspector Pierce County Home Inspector Thurston County Home Inspector King County Home Inspectors Washington Home Inspectors |
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#10
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Stephen is correct. . .
604.11.2 Water Heater Connections. PEX tubing shall not be installed within the first eighteen (18 inches (457mm) of piping connected to a water heater. |
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#11
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The TPRV extension should terminate 2 -6 inches from the ground. It must be visible and not be routed to a crawlspace or exterior.
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#12
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Quote:
Stephen Stanczyk NACHI #05113031 WSDA License #71043 (253) 241-0602 phone calls answered until 10pm Puyallup Home Inspector
Tacoma Home Inspector Olympia Home Inspector Pierce County Home Inspector Thurston County Home Inspector King County Home Inspectors Washington Home Inspectors |
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#13
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Actually you are both correct, depending on which code your area follows. The Uniform Code says the termination should be between 6" and 24" from grade or finished floor, and the International Code says not more than 6" from grade or ff.
Also, with manufactured homes, Federal guidelines allow a termination into the crawl space. Last edited by jpope; 8/27/08 at 3:49 PM. |
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#14
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"2. Discharge through an air gap located in the same
room as the water heater. 7. Discharge to a termination point that is readily observable by the building occupants." |
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#15
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Quote:
Quote:
Ahh, the UPC...thanks, gentlemen. ____________________________________________ "An Education, not just an Inspection" Larry Kage Lake Ann (Traverse City), Michigan 49650 231 929 3525 Professional Inspector and Infrared Thermographer serving the Traverse City, Michigan area and beyond. ITC/FLIR CERTIFIED BUILDING SCIENCES THERMOGRAPHER ITC/FLIR CERTIFIED LEVEL 1 THERMOGRAPHER
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