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Old 10-16-2017, 08:07 AM   #1
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Precept 36T in sub freeze

Howdy all,

We picked up our 36T in Albany and are on our maiden voyage to Washington state. Will be headed through some 25 degree areas and I'm concerned about freezing components in the water system. The unit already has front and back tank heaters installed.
The service folks in DesMoines stated there shouldn't be a problem above 20 degrees if the furnaces were on. Have not modified the rig with any more insulation or anything yet.
Am I headed for frozen pipe disaster? Would love any advice from you with experience. Will be looking for and purchasing a heated water fill line asap but don't know best way to skirt this rig yet or if that's needed.

Thanks much,
kh7ax, currently in Knoxville, Ill.
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Old 10-16-2017, 02:55 PM   #2
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I would play it safe and winterize it for 25 degree temps. There is no insulation on the water lines on the underside of the coach. The service folks in DesMoines must need more to work on, or they don't know water freezes at 32?
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Old 10-16-2017, 04:41 PM   #3
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So you're saying I should winterize it and stay in hotels on my way to washington?
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Old 10-16-2017, 05:53 PM   #4
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Its been my experience after more than 20 yrs of rving in Colorado that short periods of below freezing weather will not freeze water lines in an rv. It needs to get below 32 around the low 20's for water in an RV to freeze. It depends how warm it gets during the day as to how fast the water will freeze. We just finished a trip To South Dakota where the night time temps got to 19. As long as it stays in 40's all dayI would feel safe not winterizing the water system.
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Old 10-16-2017, 11:32 PM   #5
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Thanks for the info!! No substitute for experience.


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Old 10-17-2017, 05:09 PM   #6
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I’m curious, aren’t all your water lines installed above the floor line? Are there really underside below the compartment water lines?
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Old 10-18-2017, 10:06 AM   #7
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Quote:
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Iím curious, arenít all your water lines installed above the floor line? Are there really underside below the compartment water lines?
I don't know about your Grayhawk but on the Precepts you just need to look behind the control panel in the wet bay compartment and behind the compartment to see exposed water lines and the water filter is in the wet bay exposed to outside temperatures. The water line to to the on demand water heater is fully visible from the refrigerator access door.
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Old 10-24-2017, 09:43 AM   #8
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Quote:
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Iím curious, arenít all your water lines installed above the floor line? Are there really underside below the compartment water lines?


None of the compartments are ducted and kept warm as in the Jayco "Climate Shield" higher end fifth wheels, (really should have done my research better!) And besides the tanks having heating pads, I have to believe everything else is susceptible to the cold.
Maybe if I get the cold weather kit for the tankless water heater that has it cycle on to keep itself from freezing along with full skirting with a fan and heater for the enclosed skirted space I can make it work.


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Old 10-24-2017, 10:10 AM   #9
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Take a look if you can run an extra duct to the compartments where waterlines are. I installed one in my Jay Feather with a adjustable flap. You only need a little bit heat in those area's. I had only 2 psc. 3 ft. water line below and moved it above the floor.
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Old 11-02-2017, 11:31 AM   #10
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I'll look but according to the schematic there's a pretty long length of cold and hot lines under the floor. I was going to heat tape and insulate them and put a light in the wet bay and insulate that too. Projects projects.


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