Hi Joseph, hope you are having a nice day
On 10-Aug-04 At About 08:36:56, Joseph Meehan wrote to All Subject: Re: condensate drain
JM> From: "Joseph Meehan"
JM> Curmudgeon wrote: >> I'm selling a house where the indoor airhandler for the heat pump has >> a vertical condensate drain that runs thru the floor into the crawl >> space. JM> It >> was installed that way new. Now, an inspector for the buyer lists >> that drain as a "fault" because it JM> is >> not trapped. Does a vertical drain need to be trapped. I'm not going >> to replace it, but now I'm curious if the inspector's right or not. >> Pro AC tech opinion requested ( since I dare not ask this question >> on JM> their >> newgroup).
JM> If it connects to a sanitary sewer, it needs a trap. That prevents JM> sewer gasses from coming back in through it.
Actually no it doesn't if you think carefully about it. I have changed many drains due to the fact they dry out in winter and cause a bad smell when in heating mode. you should never run a condensate drain to a stack or sanitary pipe.
-=> HvacTech2