And another A/C condensate line discharge question

[bwilliams (Bradley C. Williams)]

I have seen more and more A/C installers tap the A/C condensate discharge line in to a dry vent stack in the attic. I know that it’s not a good idea to do this because of possible backflow/contamination problems but is there a specific code that forbids this practice in California?

Thanks

Bradley:shock:

[bkelly2 (Brian Kelly, AZ Cert. # 60234)]

@bwilliams

I have seen more and more A/C installers tap the A/C condensate discharge line in to a dry vent stack in the attic. I know that it’s not a good idea to do this because of possible backflow/contamination problems but is there a specific code that forbids this practice in California?

Thanks

Bradley:shock:

Probably the California plumbing code.

I do not believe any plumbing codes allow you to just “Tap” into vent lines without the proper fittings for one.

Of course if the “Tap” in question is done with electrical/duct tape than it is probably ok.

And jsut for good measure irc 03 1411.3 (UMC 03 310.1) does not allow a direct condensate connection to a vent or waste connection.

[jpope (Jeffrey Pope, CMI, CHI, CPI, ICC)]

Brian is correct. A direct tap to a vent pipe is not allowed - 2000 UMC 310.1

[cbottger (Charley L. Bottger)]

Oklahoma allows it if the furnace is a 90% er:D

[bwilliams (Bradley C. Williams)]

Thank you. One and all. Not only do I get straight answers, I get a laugh or two as an added bonus!

Bradley:)