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Old 09-13-2012, 09:55 PM   #1
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Explain Jayco's "Thermal Package" to me

From Jayco's website: "THERMAL PACKAGE"
Insulated, heated and enclosed underbelly and 2-sided reflective foil insulation in main roof and slideout roof

We're looking at the Jay Flight series of TT's, especially the 22FB. Since we plan to use it in cold weather on occasion, the Thermal Package option seems like the way to go.

My main question, is the underbelly with all of the piping really "heated"? Since we will do some boondocking, I'm concerned about how the pipes are protected from freezing.

Thanks!
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Old 09-13-2012, 10:43 PM   #2
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I hope you can get a four seasons package. That was a must have that we had to do without. We were told we could get thermal windows, but that Jayco had discontinued the Polar Package on TTs when we got our 2011. I'll be following this thread to see what's available. I've read it gives you about ten degrees of protection below regular insulation. Have no idea if that's accurate.
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Old 09-14-2012, 06:33 AM   #3
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The specifications on the Polar Package on my 5'er claim protection down to zero degrees. I hope I never experience that temperature, but I have seen 13 degrees several times in two winters of full timing. The big thing that I love is the dual pane windows and no condensation on the windows during the winter. I just don't have that problem regardless of what I am doing inside.
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Old 09-14-2012, 06:40 AM   #4
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When the furnace is running, there are hot air ducts that feed heated air into the (semi) sealed underbelly. This warmer air is intended to keep the pipes and tanks above freezing.

If you do not use the furnace in winter and use the fireplace or electric heater, all bets are off.
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Old 09-14-2012, 07:07 AM   #5
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If you are driving and the furnace is off there is no heat and the pipes and tanks will freeze.
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Old 09-14-2012, 08:32 AM   #6
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Quote:
Originally Posted by dalenoel View Post
If you are driving and the furnace is off there is no heat and the pipes and tanks will freeze.
Guess we will have to wait until the temp gets above freezing before moving the 5er !!!!!
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Old 09-14-2012, 09:37 AM   #7
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Quote:
Originally Posted by Blue Grouse View Post
From Jayco's website: "THERMAL PACKAGE"
Insulated, heated and enclosed underbelly and 2-sided reflective foil insulation in main roof and slideout roof

We're looking at the Jay Flight series of TT's, especially the 22FB. Since we plan to use it in cold weather on occasion, the Thermal Package option seems like the way to go.

My main question, is the underbelly with all of the piping really "heated"? Since we will do some boondocking, I'm concerned about how the pipes are protected from freezing.
Thanks!
On my 19RD Jay Flight and I also suspect with the 22FB the tanks are heated. The black water valve is also inside the heated area. The grey water valve is not. When I picked up my 19RD from the dealer (new) last December it went down to 10 degrees at night. Everything was OK except for the grey water valve. Ice formed at the valve and could not be drained. The dealer warmed it up and there wasn't any damage but still it is not truely a 4 season TT and I'm not sure I would trust it down to zero degrees with the grey water pipe and valve being outside of the heated area. I wrapped my grey water pipe with insulation and duck tape but not sure that is the perfect solution. If I ever have to get into the heated area I am change the way the grey water pipe is mounted.
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