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Old 10-07-2017, 08:24 PM   #1
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1969 31' Sovereign
Satellite Beach , Florida
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Heater intake and exhaust

Just wondering if anyone knows if there was a connected to extend the intake for the heater? I know the pipes aren't aligned, perhaps for the curve of the shell? Any help would be appreciated.
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Old 10-07-2017, 11:22 PM   #2
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1971 25' Tradewind
1993 34' Excella
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Assuming you have an original Suburban NT 30 furnace the 1972 service manual (no service manuals prior to 72) shows an 'adapter vent cap" for the exhaust which the combustion chamber connects by a exhaust tube. Does not appear to show a intake tube just the connection to the intake inlet at the rear of the furnace. As I recall where the back of the furnace connects with the skin of the trailer is sealed with caulk or Vulkem.

But the question is do you want a 48 year old furnace in your coach? I, and others, have replaced the original with a new Suburban. IF you have a NT22, that model was recalled ages ago because of CO leaks. I think the replacement model is NT 30S or NT 35S. A little modification is necessary. but a much better furnace.

Try searching furnace replacement.

You will also be hard pressed to find parts or anyone willing to accept the liability of working on your antique furnace.
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Old 10-07-2017, 11:55 PM   #3
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1969 31' Sovereign
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Fully agree, I was helping a fellow AS owner look for some answers. I will forward him the info you provided as he may be unaware of the issues you pointed out. Thanks!
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