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Old 09-08-2016, 02:36 PM   #1
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how to set up overflow for water heater


I live in California. What is the requirements for the overflow for the water heater. Is it something we can do ourselves or do we need a plumber?
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Old 09-08-2016, 05:04 PM   #2
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Re: how to set up overflow for water heater


I can't quote Ca codes... but if you are refering to the TP valve, I've had to replace two (for my kids places renovations) several years ago.

As I best recall, basically what I did, was run copper to outside the residence, and turn it down within I think 6" of the ground.

At my daughters , it was only about a 15 foot run to get outside... at my son's maybe 30 feet through his garage.

I'm pretty sure I had to use copper in CA... because I don't know why I would not have used plastic.

Don't forget to put in a union... for convience of replacing a water heater in the future.
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Old 09-08-2016, 05:06 PM   #3
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Re: how to set up overflow for water heater


In pennsylvania we have to hook up an overflow pipe that simply screws into the pressure relief valve. The end of the pipe has to be within 6 inches of the floor. You can buy them at home depot. They are made of pvc with a male thread on the end. A 2 year old could install it.

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Old 09-08-2016, 08:33 PM   #4
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Re: how to set up overflow for water heater


Ask your local building inspector for the right ansewer.
Not even sure what you mean by over flow?
The drain pan, the relief valve?
Huge difference in location on what meets code.
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Old 09-08-2016, 11:48 PM   #5
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Re: how to set up overflow for water heater


Here is the CPC code on relief valve drains.

608.5 Drains. Relief valves located inside a building shall be provided with a drain, not smaller than the relief valve outlet, of galvanized steel, hard-drawn copper piping and fittings, CPVC, PP, or listed relief valve drain tube with fit- |
tings that will not reduce the internal bore of the pipe or tubing (straight lengths as opposed to coils) and shall extend from the valve to the outside of the building, with the end of the pipe not more than 2 feet (610 mm) nor less
than 6 inches (152 mm) aboveground or the flood level of the area receiving the discharge and pointing downward. Such drains shall be permitted to terminate at other approved locations. Relief valve drains shall not terminate in a building's crawl space. No part of such drain pipe shall be trapped or subject to freezing. The terminal end of the drain pipe shall not be threaded.
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Old 09-09-2016, 11:53 AM   #6
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Re: how to set up overflow for water heater


Thanks OSO...... (Wonder why I used copper...??? Maybe that's what I had on location... can't remember)
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