On Jun 25, 11:05*am, Wayne Whitney wrote:
On 2008-06-25, sinister wrote:

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.

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.

Cheers, Wayne

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.

Harry K