Just closed on a house on Friday.
While examining the AC condensate drain, I noticed that the pipe coming from
the pressure relief valve on the hot water heater joins it. (Actually, it
_used_ to join it; now that joint is completely loose.) The condensate
drain pipe then travels another couple feet and drains into the pipe for the
clothes washer drain.
Is that a good idea? Somehow I don't think so.
Also, the pipe they used coming off the relief value is PVC not copper. Is
No, it is not a good idea. The pipe on the pressure relief valve
should be a single straight piece terminating about 6"-12" above the
floor. Most plumbing codes do not allow additional fittings on it or
piping it to a drain. If the valve operates, you want to be aware of
it, as it is a sign of a problem.
I'd like to see _that_ code specification. The 6" bit is correct as a
non-siphon termination is required, but it is recommended that all
PRV's terminated in a safe drain, not on the floor. If you hear
spashing on the floor you have two problems, what caused the valve to
operate and what damage is all that water on the floor going to cause.
It happens. They do stick open but the most common is a failure to
close all the way with a constant leak until replaced. Mostly it is
just a drip rather than a stream.
As for your installation: I can't see one being terminated in the AC
drain line. The only ones I have seen are small diameter tubing that
is not rated for hot water.
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