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Old 11-28-2022, 02:04 PM   #1
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Semi-Winterization

My neighbor has a 2003 bus RV that he bought new that he has never once winterized. He keeps an electric heater in the basement and one inside. I would like to do the same thing. I have a 2020 A Class. His has the old tank type water heater. Mine has the tankless, and it seems to me that the copper tubings visible just inside the louvered outside door would be vulnerable to freezing. Would I just close the water heater bypass valve and open and drain that small tank just inside the door, and would that be sufficient protection?
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Old 11-28-2022, 04:38 PM   #2
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What brand of heater and what does its manual say about freeze protection?
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Old 11-28-2022, 04:46 PM   #3
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Seriously, what is the downside of Winterizing your coach and walking away from it?
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Old 11-28-2022, 04:58 PM   #4
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Seriously, what is the downside of Winterizing your coach and walking away from it?
Thatís hardly an answer to my question lol but if you insist. Itís the most time consuming RV to winterize that Iíve ever owned, and I use it frequently in winter months, I donít walk away from itÖ.
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Old 11-28-2022, 05:03 PM   #5
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I am going to put a piece of 2” r-board (R=10) over the exterior door and I’ll leave the washer/dryer doors open as that closet is exposed to the WH…..
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Old 11-28-2022, 05:07 PM   #6
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What brand of heater and what does its manual say about freeze protection?
AquaGo and it gives the generic instructions for winterizing a tankless which includes turning the bypass valve and opening that little tank inside and draining it out. I just donít know if that drains the whole copper manifold, or just the little tank you open upÖ.
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Old 11-28-2022, 08:03 PM   #7
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We have a 2014 Allegro Bus 37AP stored outside in North Texas. I didn't winterize it last year, but it was plugged in. The AquaHot was set at 50į, with only the electric on. I also boxed in the underside of the wet bay with foam board.

I've found when the highs are 25į or lower it needs the diesel burner. Last year, I probably ran the diesel burner 3 days, in total.

I did find the prior year, when we had our multi-day power outage with sub-zero temps, that PEX can handle freezing. I had someone living in it, and I didn't have the AGS set right, so the heat was off way too long. I wasn't trying to test it. And I know the failure points then become the pump & fittings. But it did unthaw fine.

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Old 11-28-2022, 08:23 PM   #8
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Thatís hardly an answer to my question lol but if you insist. Itís the most time consuming RV to winterize that Iíve ever owned, and I use it frequently in winter months, I donít walk away from itÖ.
Actually, it is a perfectly reasonable question if you want help. In general, if you don't want to winterize then you have to pay the cost to heat the coach and water system all the time.
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Old 11-29-2022, 06:47 AM   #9
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We have a 2014 Allegro Bus 37AP stored outside in North Texas. I didn't winterize it last year, but it was plugged in. The AquaHot was set at 50į, with only the electric on. I also boxed in the underside of the wet bay with foam board.

I've found when the highs are 25į or lower it needs the diesel burner. Last year, I probably ran the diesel burner 3 days, in total.

I did find the prior year, when we had our multi-day power outage with sub-zero temps, that PEX can handle freezing. I had someone living in it, and I didn't have the AGS set right, so the heat was off way too long. I wasn't trying to test it. And I know the failure points then become the pump & fittings. But it did unthaw fine.

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I donít have the diesel burner. But I am of course plugged in and I have a small electric heater in the wet bay of the basement and a large electric heater up inside the coach, with appropriate cabinet doors open. Iím satisfied that everything is properly protected that way. Iím just uncertain about the tankless water heater and am hoping someone comes along with a knowledge and information about thatÖ.
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Old 11-29-2022, 06:50 AM   #10
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Actually, it is a perfectly reasonable question if you want help.
I would like help with the specific question I asked about the tankless water heater….
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Old 11-29-2022, 10:34 AM   #11
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Ok, so I finally found a YouTube video with instructions for the water heater in winter. Sense RV antifreeze cannot be used in a tankless water heater it gets isolated from the system by the bypass valve in the wet bay and drained at the exterior door panel. Problem solved….
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