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Old 11-06-2014, 06:09 AM   #1
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Gas furnace while towing

We will be towing our RW in some fairly code weather coming up, call it near freezing with out wind chill while underway. Concerned that we will have some water on board.

Anything to be concerned about run the gas furnace while underway to keep the coach & tanks warm? Does anyone do this on a long pull?

TIA for any info/tips.
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Old 11-06-2014, 12:28 PM   #2
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Quote:
Originally Posted by ksaltman View Post
We will be towing our RW in some fairly code weather coming up, call it near freezing with out wind chill while underway. Concerned that we will have some water on board.

Anything to be concerned about run the gas furnace while underway to keep the coach & tanks warm? Does anyone do this on a long pull?

TIA for any info/tips.

I tried to operate furnace while towing from Indiana to Florida last winter. The furnace would not ignite once underway. I assume it was due to air turbulence getting into the furnace vent. If the furnace does not ignite in 3 attempts, the controls will shut it down. So, at the end of the first day of travel, I found the indoor temperature was at the upper 50's while the outdoor temperature was in the 30's. That was after 7 hours of towing from northern Indiana to southern Kentucky. The indoor temperature started at 72 degrees. Fortunately, after the first day, the outdoor temperatures were warm enough that I did not have be concerned.

I haven't tried to experiment with any kind of baffle to see if the turbulence can be reduced to prevent it causing a problem with ignition. I may try that this year when headed south.
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Old 11-06-2014, 01:18 PM   #3
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I've never had luck with keeping it running because of wind. Actually blows out the fridge every once in a while.

I think Dave said he tried heating while underway, and still froze down at the tanks or tank valves.
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Old 11-06-2014, 01:25 PM   #4
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Ahhhh...the joys of having a generator. My electric heaters don't keep the belly warm but they sure do keep the dead chill from taking hold.
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Old 11-06-2014, 01:48 PM   #5
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I suppose I could run the gen and heat pumps. I'll have to try it sometime.

I will say the furnace heats a cold coach much faster than the AC cools a hot coach. I have run down the road with the AC on.
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Old 11-06-2014, 02:05 PM   #6
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So then what do you all do, just not pull when the outside temp is < 40F?

Luckily we are heading due south so the the outside temp should warm up rapidly after the first few hours. Guess I'll just make sure to start w/ the coach pre-warmed and make sure to run the furnace when we take driving breaks and driver swaps.

Thanks for the feedback.
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Old 11-06-2014, 02:21 PM   #7
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My only concern towing with the furnace on would be are the registers obstructed. On the 31SL the living room is fine with the slides in and the bathroom is ok as well. The register in the bedroom is covered halfway by the slide when in. My thought would be, given the way the ducts are connected to the register with any back pressure and heat the duct would blow off the register.
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Old 11-06-2014, 02:29 PM   #8
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We have run with the heater on and no ill effects that we could tell...

and we also think the bedroom register is covered,
but we never set it more than the minimum to keep it above freezing..
just low enough that it would be a concern...

(but I have left the basement halogen lights on - they generate a LOT of heat )
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Old 11-06-2014, 02:35 PM   #9
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I've ran through a blizzard with the generator running, fireplace on and a radiant heater in the basement. The trailer was toasty warm but the water valves froze which I fixed with a heat strip.

When it gets real cold the moisture in the LP will freeze the LP valves as well.
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Old 11-06-2014, 02:38 PM   #10
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Dave - please define "really cold"?
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