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Old 10-11-2006, 11:47 PM   #1
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1970 27' Overlander
Houston , Texas
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Furnace Removal

Hi All
Just to let yall know that once you remove the screws on the outside intake and exhaust flange on the surburban furnace it is easily pulled out from under the cabinet I tugged and tugged with no luck until removal of these two screws. I thought it was because of it being attached to the floor somehow but not so.
That being said how do I replace the flange which is one piece attached to the intake pipe on the furnace after being destroyed because the bolts were rusted in place. Used a hammper and screw driver to pound through the rusted flange.
Do I need to fabricat and weld a new one? I should probably replace but was incouraged as the pilot fired right up and seem ready to blow.
thanks
James
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Old 10-12-2006, 04:33 AM   #2
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I think you have to fab one up and replace it. I'm not sure if the old flange is just welded on with long tacks or if it is welded solid.
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Old 10-12-2006, 09:33 AM   #3
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New Furnace Questions

Well I have decided to purchase a new one, does anybody know which model I should get as the original is a Suburban NT 22-A and the deminsions were
14w x 17h x 23d and all the new ones seem to be 12x12x23. I want the exhaust and intake to line up with a new one so I assume I will have to build something to raise the new one to meet the old holes in skin. The other thing is the old one had the ducts underneath, one went to the rear bath and the other out to the right side of the cabinet. thanks again for any information.
James
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Old 10-12-2006, 09:52 AM   #4
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sorry should have used the search feature first, no need to reply to question
thanks
James
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Old 10-12-2006, 10:13 AM   #5
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I'm looking at doing this soon, too. I noticed on one of our trailers the P.O. had left the shell of the furnace in place and slid the new one into it and connected the ducts between the old and the new. It looks interesting, but it works! Good luck!
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Old 10-14-2006, 12:06 AM   #6
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Going for the catalytic heater instead as I think it will serve us well for about half the price. Installing this weekend and will follow up with performance on our 27ft overlander. I think I will install a hinge so I can redirect the heat when needed.
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