American Standard Furnace Mystery

David6 · 01-29-2010, 04:25 PM

I pulled off the inducer housing again and took a look at that gasket again. It turns out that it wasn't caulk that came off. The rubber on the gasket itself appears to have melted. The entire outside/back of it melted off. The front face that sits directly against the face of the inducer has two or three cracks in it as well. I only found the part online in one spot only. 21D340234 P01 http://bestbuyheatingandaircondition...tegory_Code=CP It is apparently obsolete, but I can't find the newer part. Any ideas?

I think I found the bulletin that was sent out for this very issue. Those parts pictured are identical to the ones in mine only flipped since mine was converted to downflow.

http://docs.google.com/viewer?a=v&q=...Wx9tfwBVgmMLvg

JohnH1 · 01-29-2010, 09:42 PM

That bulletin does not describe your problem. Eather you are drawing to much negitave psi overcomming the hight of the trap. or mabye the trap is not trapping the water.
Look into the trap to see the wall in the trap still in place inside the trap assembly. Without a trap you will suck air up the drain tube and not allow condensate out of the furnace untill the suction stops (IE: induser stops) this is what it looks like. I have never seen a trap fall apart but anything can happen.

John

yuri · 01-29-2010, 10:10 PM

It could happen as they are only held together with a thin layer of silicone or it was built on a Friday afternoon or Monday morning.

John, I am surprised that trap is not vented with a 1/4" hose like the Ducanes/AirFlos and Carrier and ICP traps. Poor design IMO.
Back to the Deep Freeze here, will try send some of it South, LOL

JohnH1 · 01-29-2010, 11:27 PM

Quote:

Originally Posted by yuri

It could happen as they are only held together with a thin layer of silicone or it was built on a Friday afternoon or Monday morning.

John, I am surprised that trap is not vented with a 1/4" hose like the Ducanes/AirFlos and Carrier and ICP traps. Poor design IMO.
Back to the Deep Freeze here, will try send some of it South, LOL

I will take the cold it is good for biz. I could always use more work.

David6 · 01-30-2010, 05:47 AM

I found a forum on another site where the pictures are exactly what mine looks like.

**beenthere** · 01-30-2010, 05:52 AM

Please don't post links to a competing forum.

Maybe you want to down load the pic. And then upload the pic to here.

David6 · 01-30-2010, 09:36 AM

Quote:

Originally Posted by beenthere

Please don't post links to a competing forum.

Maybe you want to down load the pic. And then upload the pic to here.

Sorry, thank you for the correction. I should have thought before doing that.

Upon reading the bulletin a few more times, John is right. Luckily, I don't see any signs of a cracked collector box. I'm keeping my fingers crossed. I think my problem is just the transition. I've tried to track it down online (#RCT00084), but I'm having no luck. The Trane parts store near me is closed this weekend. Any idea how much I'm in for? I just want to be prepared for sticker shock.

Thanks all, I think I'm close.

**beenthere** · 01-30-2010, 10:50 AM

No, I have no idea.