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Bunker762
Dec 3, 2009, 03:09 PM
My twenty something bryant furnace model#398AAV036060 leaks water. I have removed and cleared all the rubber lines on the front of the furnace including the trap on the blower. The water seems to come out the bottom of the induction fan housing. (plastic) Is there a seal that can be replaced on this housing? Can you remove the housing without tearing off the front of the furnace? (burner, gas valve, etc.)
I replaced the gas valve last year myself and saved money and I really do not want to purchase a new furnace at this time if it is just a seal. I have some mechinacal ability and tools for most jobs.

Bunker762

KC13
Dec 3, 2009, 07:04 PM
The front housing gasket (large ring - see pic) can be replaced fairly easily. You can also use high-temp RTV silicone in place of the gasket.

Bunker762
Dec 4, 2009, 06:02 AM
I am glad to see that housing comes off but the leak appears to come from the square piece that it attaches to on the bottom of the heat exchanger. Will hi-temp rtv work on that also?
Thanks for your help.

Bunker762

KC13
Dec 4, 2009, 05:09 PM
If the secondary collector box is leaking condensate, you may want to inspect the secondary heat exchanger for potential failure. If o.k. it would be a good idea to have a replacement collector box handy when you make the repair, as breakage during removal is possible. Use high-temp RTV silicone to re-seal. If secondary is bad, go to furnaceclaims.com for more info.

Bunker762
Dec 8, 2009, 01:28 PM
Where can I get a drawing of this furnace? There is nothing with the original paperwork I got with this furnace. Even a parts list or diagram would be helpful. The Bryant site seems to only have these documents for registered HVAC companies. This would help in finding a collector box. I am used to working with exploded drawings and this would speed up this repair.
What would I be looking for in the secondary heat exchanger that would indicate failure?

Bunker762

KC13
Dec 8, 2009, 08:18 PM
Blow the dust off this & see if there's anything useful inside. External corrosion of the secondary passages indicates trouble.

Bunker762
Dec 9, 2009, 06:14 AM
Thanks KC13. Will give it a go this weekend. File looks like some of the stuff I already have but troubleshooting guide is new.
Thanks again.

Bunker762