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Old 01-25-2011, 04:56 PM   #1
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powering 12v furnace

Hey guys, new to this forum and been checking it out for awhile now.I have a question regarding my new Snow King enclosed trailer equipped with a 42,000 btu Suburban furnace.It is set up to power through my tow vehicle at 12 volts, my question is how can I power just the furnace up so I can work inside wtith heat in my driveway without having to hook up my truck and run it?I have a few things to do inside before I can load it up with my three sleds, so I was wondering which pin in the 7 pin connector provides power to the furnace?
Thanks in advance for any responses!If anyone has any nifty setups for doing this let me know!
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Old 01-25-2011, 05:06 PM   #2
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does it have a house battery? the hook uo to the tv s for charging when traveling down the road not to run off of.
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Old 01-25-2011, 05:13 PM   #3
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does it have a house battery? the hook uo to the tv s for charging when traveling down the road not to run off of.
Nope, no house battery.It's a 24 ft. V-nose enclosed snowmobile trailer.Furnace was a factory ordered option.
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Old 01-25-2011, 07:16 PM   #4
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Might be a lot easier to add a deep discharge battery to run the furnace. Does the trailer have brakes?
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Old 01-25-2011, 07:37 PM   #5
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Quote:
Originally Posted by gader69
Hey guys, new to this forum and been checking it out for awhile now.I have a question regarding my new Snow King enclosed trailer equipped with a 42,000 btu Suburban furnace.It is set up to power through my tow vehicle at 12 volts, my question is how can I power just the furnace up so I can work inside wtith heat in my driveway without having to hook up my truck and run it?I have a few things to do inside before I can load it up with my three sleds, so I was wondering which pin in the 7 pin connector provides power to the furnace?
Thanks in advance for any responses!If anyone has any nifty setups for doing this let me know!
It's the red wire. Or just connect a battery charger to it.
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Old 01-26-2011, 07:50 AM   #6
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A 24' enclosed trailer has to have brakes in every state I know of. If they're electric, you can use the brake battery or as Lou said, add a deep cycle battery to run the furnace.
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Old 01-26-2011, 10:20 AM   #7
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Thanks for all your ideas guys.Found a solution last night.I borrowed a booster pack from my dad and hooked up the booster clamps to the ground and hot wires in the trailer connector.Now I have another problem.The blower kicks in as it should, followed by burner ignition, but the burner will only run about 2 minutes, then there is a click and hot air slowly goes to cold, sounds like the burner is going out.Trailer is brand new, I tried it three times last night with the same results.Anyone got any ideas?My dealer is over an hour away....
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Old 01-26-2011, 10:53 AM   #8
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Possibly a partially blocked exhaust. Maybe a mud-dabber made a nest. Burner is shutting off on limit if that's the case. Also if you have registers be sure they are all open. Just a starting point! Good luck!
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Old 01-26-2011, 12:10 PM   #9
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Check the rated capacity of that booster unit and also check the output voltage when running the furnace. Low voltage will cause the blower to run slow causing the sail switch to shut the unit down prematurely.
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Old 01-26-2011, 12:52 PM   #10
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Thanks for the input BamaRambler, but I forgot to mention I tried it hooked to my truck, which has a new 850 Cranking amp battery.Truck was running the whole time, had same results.
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