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Old 04-01-2010, 03:42 PM   #1
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1972 27' Overlander
New Haven , Connecticut
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Trouble removing my suburban furnace

I have a '72 overlander. I'm trying to remove the Suburban NT 30 funace to bench test it. I have the Airstream service manual and Suburban installation/instruction manual.

I've removed the heater face cover, the four screws from the exterior vent and disconnected the gas line.

I'm having trouble locating the the two screws in the lower face of the heater. I found one on the right side below the information plate, but there does not seem to be one on the left side. I've tried sliding the unit out of the cabinet, but it does not move at all.

Any help would be greatly appreciated.

Jack Paulishen
New Haven, CT
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Old 04-01-2010, 04:32 PM   #2
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1978 25' Tradewind
San Bernardino , California
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Furnace removal

There is an outside screw that goes through the the intake air vent and attaches to the core unit. It is a long screw about 3 1/2 inches long. Once that is removed you will have to wiggle the core out by moving it side to side as you pull it out.
Rick N
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Old 04-01-2010, 04:38 PM   #3
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1969 25' Tradewind
1971 18' Caravel
Berkeley Springs , West Virginia
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You can check the attached pdf.

On my 69 the NT30 had the two screws at the rear holding it to the base, the screws on the cover (4 short ones and 2 long ones), and the gas pipe going through the side of the housing, then it slide out. It was stuck at first due to some rusting on the base slides, but with a little coercion it came out.


Suburban Dynatrail Models.pdf
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Old 04-01-2010, 09:11 PM   #4
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1972 27' Overlander
New Haven , Connecticut
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Thanks! I got it out by wiggling it and pulling alot harder than I had been.

Thanks again.
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Old 04-07-2010, 10:59 PM   #5
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2006 25' Safari FB SE
1972 25' Tradewind
Houston , Texas
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Furnace Removal

A crow bar helped me after removing all suspected screws. Rust was glueing it together.
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Old 02-06-2016, 06:55 AM   #6
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I also have a 1969 Tradewind and would like to remove the furnance. Did you have to take the cabinets apart to get it out? And if so how did you accomplish this?
Thanks!
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Old 02-07-2016, 12:10 AM   #7
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1978 25' Tradewind
Metro Phoenix , Arizona
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I have a 1978 Tradewind, and it took me 2-1/2 hours to get the old furnace out and another 2-1/2 hours to get the new one in.

Sigh.
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Old 02-07-2016, 04:58 PM   #8
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1972 27' Overlander
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I have a 72 Overlander. You have to remember to remove the screws that hold the exhaust port on the outside of the trailer, along with any other that hold it in. Also remove and label 12 volt wires. Once that is complete it should slide out the front of the cabinet, it is not heavy perhaps 35 lbs.


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Old 02-07-2016, 09:28 PM   #9
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1966 24' Tradewind
Conifer , Colorado
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I purchased my 66 Trade Wind with no furnace. I installed a new NT 30 as it was readily available, athough more BTU than I needed.

Old Airstream cabinets are fairly easy to disassemble. The new furnace system was more challenging to install.

The 66 Trade Wind had a rather unique heating system. Warm air was delivered under the galley cabinets. Cool air was returned via floor registers and underfloor oval ducts. I decided to reverse that flow with warm air being delivered to the gaucho floor vent, and the rear bath floor vent. I also ducted warm air to my new waste water tank compartment. I did this as storage space in my twin bed Trade Wind would be reduced by running above floor heating ducts through the cabinets.

I built a under floor plenum out of furnace tin to receive the full heated air from the furnace (maybe 180 degrees), and then distribute it to the registers. The system seems to work, but not tested in subfreezing weather yet. But it will not win any efficiency awards.

David
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