Help please. Need to fix drainage from furnace

[ive]

Hi all.

The water that drains out of the furnace is draining under the floor and not into the drain. It runs on top of the drain and then goes under the floor. What’s the best way to fix this?

 

[ive]

Picture

 

[rlitman]

Open up the floor around that iron drain cap so you can pull the cover off, and then replace the cover with one that has a recessed center.

 

[ive]

Thank you.

 

[LPD ret]

If you could get that cover off and make an opening into it to accept a 90 degree turndown from that PVC into the drain that should do it also.

 

[ive]

Hi. Thanks for the idea. Maybe drill the cover to take the fitting?

 

[Jim greengo]

There should be some sort of "air break" betweecondensate drain line and floor drain.

 

[LS6 Tommy]

There should be some sort of "air break" betweecondensate drain line and floor drain.

And a condensate neutralizer on the drain line.

Tommy

 

[BD1]

Hi. Thanks for the idea. Maybe drill the cover to take the fitting?

Adding a street elbow would be like adding a elbow and a piece of pipe. The street end would go throttle hole you drill in cover.
Here’s page for a 3/4


https://www.homedepot.com/p/DURA-3-4-in-Schedule-40-PVC-90-Degree-Street-Elbow-C409-007/100344965


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[rlitman]

Hi. Thanks for the idea. Maybe drill the cover to take the fitting?

That could also work. A step drill bit (I suggest the HF one) can be used to open up an existing hole to the diameter you require. The elbow approach will prevent water coming from the condensate lines from getting under the floor, but will not help with water poured in that drain from a bucket.

There should be some sort of "air break" betweecondensate drain line and floor drain.

There needs to be an air gap between the highest possible water level in the trap below that cover and whatever fitting you install. Basically, don't put anything in to extend the elbow downwards.

And a condensate neutralizer on the drain line.

Tommy

Agreed, there should be a condensate neutralizer. I prefer clear ones where you can easily see if they need to be refilled.

 

[ive]

Thanks guys. Will send a pic when I’m done if it looks nice

 

[Jackfre]

I hope the drain line is plastic. The pH on gas fired condensate is about 3.2. A cast iron or steel line which sees only condensate will not last. Also, concrete being a lime based product, and limestone being what you put into the condensate neutralizing trap you should build, it will quickly eat the slab. Back in the late 80's I had a guy buy a furnace I represented and used it for a construction heater over the winter. He did put a supply plenum on top and strapped that to the floor joists in the basement. He called me in the spring demanding a new furnace under warranty. He had let the condensate run onto the floor all winter. That unit has a 12 ga base plate under it and it and the bottom 2-4" of the furnace were gone. What was left was suspended and his slab in about a 6'radius was a bunch of polished aggregate and only about 2" of concrete left. I tell ya. You just can't dream this stuff up

 

[ive]

Hi guys.

I attempted to resolve this today. I wanted to just add some 90* fittings amd drill the cover. The problem I ran into was that the line on the condensate exhaust doesn’t fit the pvc fittings I bought. The od of the exhaust line is 7/8’s. I’ll post a pic

 

[ive]

I need to add a coupling as well. The hvac guys made the line just a little short. Anyways these fittings won’t work.


What am I doing wrong?

 

[ive]

Thanks for bearing with me.

 

[brewchief]

Look and see if the pipe you have is pvc or cpvc, the sizes are different so you have to have the same type of pipe. Your pipe may say 1/2" or 3/4" pvc, if so buy that size fitting. It looks to me like you have cpvc fittings as they are a bit off white instead of plain white.

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[BD1]

If you bought PVC and it doesn't fit, then it's CPVC.
Buy a coupling to go on the existing short pipe, then buy a STREET elbow. The pipe size end will go into the coupling. This maybe long enough to avoid buying any pipe. Make hole in drain so elbow fits in.
You can add tywraps to hold to drain cover.


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[ive]

Thanks guys.

 

[rlitman]

...It looks to me like you have cpvc fittings as they are a bit off white instead of plain white...

Yep, from the color, the pipe appears to be PVC, while the fitting appears to be CPVC.

 

[welder4956]

Hi guys.

I attempted to resolve this today. I wanted to just add some 90* fittings amd drill the cover. The problem I ran into was that the line on the condensate exhaust doesn’t fit the pvc fittings I bought. The od of the exhaust line is 7/8’s. I’ll post a pic

1/2" PVC pipe O.D. is 0.840", which is slightly under 7/8" (0.875"). If you bought 3/4" fittings you got the wrong size.

 

[SALIV8]

I would just grab proper size 45*, push fit only and keep it resting against the floor drain just touching. Almost a horizontal position. Wouldn’t even need to remove tie wrap and no drilling.

 

[LS6 Tommy]

1/2" PVC pipe O.D. is 0.840", which is slightly under 7/8" (0.875"). If you bought 3/4" fittings you got the wrong size.

If he has a 1/2" condensate line, they installed the wrong size. Condensate lines have to be 3/4" minimum by code.

Tommy