P trap to waste pipe?

[Jim McClendon]

Is a p trap to waste pipe allowed for ac condensation?

[Raymond Wand]

During non seasonal use what keeps the trapped primed? If trap dries out sewer gases in the attic.

Cheers,

[Gunnar Alquist]

Is a p trap to waste pipe allowed for ac condensation?

Jim,

Generally, you will see a drain pipe connected to the p-trap under a bathroom sink. Like Raymond indicated, a trap primer would be necessary in this case.

[Aaron Miller]

Jim:

It's just plain wrong.

http://www.inspectionnews.net/home_inspection/heating-ventilation-air-conditioning-hvac-home-inspection-commercial-inspection/2940-condensate-drain-diagram.html#post16917

Aaron

[Jerry Peck]

Two mentions of a trap primer, none of the missing air gap ...

... unless you read through the posts in the link Aaron posted. ;)

[Jim McClendon]

Thanks all, and thanks for the diagrams.