Plumbing question

yuriy128

Hi All,
This is my first post and im sure not going to be the last in this forum.

We just had airconditioning put in at our house and after everything was done i'm questioning a few items.
One is thevattachef picture: basically there is a T into the sewer pipe and one of the hole has two discharge pipes fed right into it. doesnt seem like it would create a good seal from sewer gases. Also the right opening is fully upcapped so the sewer smell is coming in. Please adwise!

joecaption

No one here's going to know where those two line are running from and just be guessing. One looks like a condinsate drain line but the other one (copper one) no idea, if it's a freon line it would make no since to have it run to a drain.
Sometimes when the lines running out to the outside condensing unit and run through concrete they run the lines through PVC to keep the copper from coming in contact with the concrete.

yuriy128

The white plastic one is PVC from AC unit condensate, the other one i'm not sure. But is it up to code to have 2 pipes enter sewer PVC like that? looks like this would leave space in-between for gas to escape.

joecaption

If there's no trap and this truly is a sewer line then no it's not legal.
Picture you line the drain hose goes into for the washing machine. It's open but there's a trap in the line to stop sewer gases.

yuriy128

Not sure i get your last statement, it cant be both open and have a trap..

jproffer

The trap is the fitting (or actually, several fittings) that look like a sideways "S"....there is no trap in your picture.

In a washing machine drain, there is a trap above the floor (or supposed to be anyway)....it is open at the top (for the drain hose from the washing machine), but it does have a trap.

joecaption

Not quite what I said. I said if there is a trap somewhere in this line then the way they did it should have been ok because the water in the trap would stop the gases from coming out, your sink drains, toilet and tub drains are open but there's traps in line to stop the gas.

yuriy128

I can trace this line all the way to the sewer with no trap, so its probably not ok.. Thanks for your help. So do the pipes need to be fed separately?

joecaption

No idea untill you figure out where that other line goes and what it does. If it's not a drain line then what's it doing in there.
I've never seen a copper condinsate drain line on a HVAC unit, but anythings possible.
If there was just the one PVC line I'd drill a blank cap like what's on the right side with a hole saw and just slide the pipe into the hole.