Vent Stack with Condensate Lines

[Michael R. Boyett]

Originally Posted by jpope

This is an indirect waste line which requires an air-gap and a trap.

Jeff, are you saying it needs both? It is common practice here and has been for quite a while to route the a/c condensate drain line to the fixture side of a lavatory drain. No air gap but it is installed before the p-trap for that lavatory.

[Jeffrey R. Pope]

Technically, all indirect waste piping requires both. I rarely see an air-gap.

All indirect waste piping shall discharge through an air gap or air break into a waste receptor or standpipe.

[Jeffrey R. Pope]

Originally Posted by bkelly2

I understand what you are saying Jeff but do not see the section of code to support this.??

I can't find an IRC reference to support this, but here are the CPC/UPC references. . .

California Plumbing Code

815.1 Condensate Disposal. If discharged into the drainage system equipment shall drain by means of an indirect waste pipe.

815.3 Point of Discharge. Air-conditioning condensate waste pipes shall connect indirectly to the drainage system through an airgap or airbreak to:

815.3.1 A properly trapped receptor; or

815.3.2 Other points of discharge acceptable to the Administrative Authority, including dry wells, leach pits, the tailpiece of plumbing fixtures, etc.

[Brian E. Kelly]

Originally Posted by mboyett

Jeff, are you saying it needs both? It is common practice here and has been for quite a while to route the a/c condensate drain line to the fixture side of a lavatory drain. No air gap but it is installed before the p-trap for that lavatory.

I see that here also Michael

tailpiece of plumbing fixtures

. And sometimes I see this.

And I have seen package systems draining into a roof vent I might not have called out.