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Old 02-11-2009, 04:40 PM   #1
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Burner Box Cover Gasket


When recently changing an ignitor, I noticed that the burner box cover gasket on my Comfortmaker furnace was in bad shape. Unfortunately, neither my HVAC technician or the local HVAC parts supply house have been any help in finding or recommending a replacement.

My Comfortmaker is a GUH100 A016L and the burner box cover gasket is shown as being made of neoprene 1/4" x 5/8" x 5'. The part number I have is 2480869.

I'm assuming that I should replace the worn gasket, but I'm at a loss as to where to go. Can anyone recommend the right gasket material for this job and point me towards a source. Thanks!

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Old 02-11-2009, 05:13 PM   #2
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Burner Box Cover Gasket


can't you get a sheet of automotive gasket material and cut your own? high temp stuff should do it?
(i wonder if an automotive liquid gasket would do it? seals tight and high-temp. but it may be unsafe, so wait till some of the guys here chime in before you listen to me!)

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Old 02-11-2009, 05:57 PM   #3
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Burner Box Cover Gasket


If you have the part number.
The distributor can order it for you.

Liquid gasket material, won't let you open teh cover too easy again.
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Old 02-11-2009, 06:08 PM   #4
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Burner Box Cover Gasket


Quote:
Originally Posted by beenthere View Post
If you have the part number.
The distributor can order it for you.
I've been told that it is no longer available.
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Old 02-11-2009, 06:09 PM   #5
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Burner Box Cover Gasket


Quote:
Originally Posted by beenthere View Post
If you have the part number.
The distributor can order it for you.

Liquid gasket material, won't let you open teh cover too easy again.

Yeah, been there done that. Had to pry the the cover off for the next service call.
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Old 02-11-2009, 06:34 PM   #6
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Burner Box Cover Gasket


Quote:
Originally Posted by Johnnysan View Post
I've been told that it is no longer available.

I remember the GMP's were getting hard to get gaskets for. The Goodman techs in Fayetteville usually recommend the hi-temp liq. gasket. And Hvaclover is right. The plates are a bear to get off.

Good Luck
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Old 02-11-2009, 07:25 PM   #7
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Burner Box Cover Gasket


Here's a solution.

This is a little out there but it works.

Clean the mating surface of the burner compartment with alcohol (WITH THE FURNACE TURNED OFF!!) and make sure there is no residual dirt.

Next: Apply Vaseline liberally to burner compartment mating surface working Vaseline into screw holes.

Apply a 1/2" bead of red RTV silicone to burner compartment cover .

Place cover in place and tighten as usual.

Allow to dry over night.

Remove screws and pull off burner cover. You should have a well formed gasket that conforms to the burner compartment.

The Vaseline should have stopped the RTV from sticking to burner compartment mating surface.

Clean Vaseline and be happy.

I used to do this back in the day when those furnaces first came out. It works and the RTV lasts forever.
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Old 02-12-2009, 12:31 PM   #8
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Burner Box Cover Gasket




Thanks guys...I REALLY appreciate this. I'll give this a shot as soon as the weather warms up and I can take the furnace off-line for a few days. I'll try to remember to post a follow up to let you know how I did.
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Old 02-12-2009, 01:48 PM   #9
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Burner Box Cover Gasket


No need to take the furnace off (except when applying alcohol to clean. That gets wiped away in the cleaning process).

The RTV will dry just as well with the furnace working.

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