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-   -   Water heater T&P plumbed to cold supply (http://www.diychatroom.com/f7/water-heater-t-p-plumbed-cold-supply-105043/)

rjniles 05-20-2011 02:41 PM

Water heater T&P plumbed to cold supply
 
Helped a friend replace a water heater today. Located in a utility room under a raised beach house. Water heater is a 50 gallon low boy on a shelf raised about 4" above the floor. Connections about a foot below the ceiling. Cut the electric off, closed the gate valve and drained the heater. Cut the hot and cold connections off with a saws-all. T&P plumbing went back into the plywood covered wall, hit it with the saws-all. Water came out under full main pressure. Quickly shut off the supply to the house, no damage done. Finished removing the tank and opened the wall to investigate. The T&P drain was hard plumbed back into the cold water side.:furious:

Has anyone ever heard of such a configuration and what could be the possible reason to do this?

Installed the new tank and plumbed the T&P down to the floor. Capped the old pipe to the cold supply.

plumberinlaw 05-20-2011 05:59 PM

And the plumber said "That's going to cost a little extra"

TheEplumber 05-20-2011 06:01 PM

The things people do...:no:
So, if the T&P blows, which faucet would turn itself on first?:huh:

AllanJ 05-21-2011 08:11 AM

Quote:

Originally Posted by rjniles (Post 651593)
T&P plumbing went back into the plywood covered wall, hit it with the saws-all. Water came out under full main pressure. Quickly shut off the supply to the house, no damage done. Finished removing the tank and opened the wall to investigate. The T&P drain was hard plumbed back into the cold water side.:furious:

Has anyone ever heard of such a configuration and what could be the possible reason to do this?

It was a wrong connection. There is no socially redeeming reason for doing this.

Mike Swearingen 05-21-2011 08:38 AM

Whoever did that must never have seen a video of a water heater exploding, like the one that they had on "Mythbusters" one time. It shot way up in the air like a great tumbling rocket.
I've heard of people even plugging off the T&P too. KABOOM!
LOL
Mike

rjniles 05-21-2011 04:42 PM

Further info on this:

This was not done by some hack DIY. There was a label on the tank of the plumbing company that did the work 17 years ago. And you could tell that no changes had been made since then. Called the tel #, apparently no longer in business - wonder why?.


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