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Old 09-13-2010, 06:05 AM   #1
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1984 27' Airstream 270
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How to start a Suburban Furnace

We have a 27ft RV with a Suburban Furnace. The LP tank was removed for testing and refitted. Cooker oven and water heater works but can not get Furnace to start. 12v power OK
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Old 09-13-2010, 07:17 AM   #2
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Hi--I don't know where your furnace is located in relation to your stove top, but, in my '67 the furnace gas line is immediately after my stove top. When I had trouble lighting my furnace last year, it was suggested that I light one of the stovetop burners, leave it on, and then light the furnace. It lighted immediately! I now do it every time........It would be nice if it could be so easy for you.......................
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Old 09-13-2010, 07:31 AM   #3
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Pilot and Thermostat

If it is like mine, you need to light the pilot. Much like lighting a pilot of a water heater. Then set the termostat high enough where the fan in the furnace comes on. Also on mine there is a gas valve on the underside of the trailer to supply gas to the furnace, it needs to be open.
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Old 09-13-2010, 08:53 AM   #4
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It does sound like air has got into your propane lines when the service was done. Lighting the gas stove will clear that air out like pinktrailer said.
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Old 09-13-2010, 09:23 AM   #5
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When my regulator failed, I replaced it, after which my furnace didn't work. It turns out that there was some crud in the propane line that blocked the gas solenoid in the furnace. I had to blow it out.
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Old 09-13-2010, 12:49 PM   #6
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Mine would not light at home but apparently the 50 mile ride to the repair facility cured the propblem because the furnace fired up for the technicians and has worked like a charm since. Probably was a spider/web inside the unit.
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Old 04-05-2015, 01:16 PM   #7
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Starting this puppy

So I'm guessing my hand valve is the valve on the left of my furnace. Is it supposed I be parallel or perpindicular to the furnace? I had the lp tank open, a burner on and tried to light the pilot with no luck. The instructions on the furnace said to set the thermostat on low, I had it off per my understanding of everyone's comments and not wanting to blow up. Any tips?
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Old 04-05-2015, 02:25 PM   #8
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The petcock is open when parallel to the line, but, are you sure you want to mess with a 40 something year old furnace?
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Old 04-05-2015, 10:09 PM   #9
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Have you tried lighting the pilot with a BBQ lighter by removing the view port cover and holding in/out the over ride to light the pilot? The thermostat must be set to the minimum for lighting the furnace.
I agree with lumatic. It's an old unit and must be thoroughly checked out. The safest thing to do is replace it.


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Old 04-07-2015, 07:46 AM   #10
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1973 Argosy 26
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Yeah, I am going to bite the bullet and get a new one. Is Palimino still the best place to get one? Also, I have talked to suburban and they said I could use the NT20 or the NT30. In looking through the forums I haven't found anyone that has replaced their furnace in an argosy. Any tips? I know I will have to make adjustments on the install either way I go.
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