I'm the one who posted *not* to run them outside in freezing temps.
Not once, but a few times in this thread. And I was also the *first* one to
Clark is just a pet that's been following me around for a few weeks.
Try and keep up!
"IRC 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."
"People don't like to test their T&Ps. But then, we don't think it's so much
fun to wake up in the hospital, or to patch a big hole in the roof, either.
When water heaters explode, it's catastrophic. People are injured or die;
buildings are severely damaged. Test your T&Ps! And one more thing: T&P
drain lines should go down and out. Never up. If the valve opens, water will
pool there and corrode it shut. Or freeze in the line in colder climes.
We've seen lines plumbed uphill so many times we've lost count. But there
SHOULD be a drain line, usually to within about six inches of the floor, or
plumbed outside. That's code around here [California]. It's to prevent you
from being scalded if the valve should open while you're standing next to
It is the White Man's Burden to enlighten the benighted. I'm glad I was able
to assist you.
over building code? Do you mean knowing that T&P drains should never go up
regardless of whether freezing is possible? Do you mean knowing the
difference between affect and effect? Do you mean knowing the difference
between mute and moot? Do you mean knowing that liquid lines don't sweat?
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