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10-14-2022, 11:03 AM #1
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Freeze warning & belly heaters question
We have temps expected low around 30 next week. We're scheduled to take one more trip in about a month so I don't want to winterize yet.
I have the rig parked at home with 50amp service.
All tanks drained, but about 5gal in the black tank per usual.
I could of course turn the heat on and set it for 40 degrees or something very low, but would rather not let it run when I'm not in the rig.
Question about the tank/belly heaters: if they are mostly empty, is there any danger of heat elements overheating?
IE, how do those tank heaters function? I assume some sort of not-very-warm heat strip, or else you could melt the plastic tanks, correct?
I'm assuming if there's no danger of overheating, then leaving the tank warmers on will give me just enough heat. Obviously, I wouldn't try this if we have a freeze danger - high temps will be back in the 50s during the day.
Otherwise, what do any of the rest of you do in this situation? (other than drive south!)
Thanks!Colin & Tracy
'21 Chevy Silverado 3500HD LTZ/Z71/SRW, Long bed, Anderson UH
'21 Solitude 310 GK-R
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10-14-2022, 11:11 AM #2
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Mark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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10-14-2022, 11:14 AM #3
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Colin & Tracy
'21 Chevy Silverado 3500HD LTZ/Z71/SRW, Long bed, Anderson UH
'21 Solitude 310 GK-R
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10-14-2022, 12:12 PM #4
Freeze warning & belly heaters question
This is absolutely correct, even if you turn them on in 100 degree weather with empty tanks no harm, the thermostat will keep them from turning on until the on set temp is reached. Once the off set is reached they turn off. It is heating up the plastic, so even if empty, no harm. You are good to run them.
Bill2019 GMC 3500 SRW Sierra Denali Duramax
2020 Reflection 315RLTS
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10-14-2022, 01:12 PM #5
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My .02. Run the furnace. Your tanks are not easy to freeze but valves and pipes much more so. When I am in this situation, I run the furnace set at 55 degrees. I also run the water heater too. Never had anything freeze.
2021 Reflection 312 BHTS, Silverado 2500 Duramax
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10-14-2022, 03:45 PM #6
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With 5 gallons in the tank(s) they will have enough room to expand IF they freeze. Low 30s with the lines & WH drained, I usually will blow out the lines with air & call it good.
I missed low temps, (down to 29-30*) a couple of times and had no problems with tanks or lines (Lines drained, 5 gal in black tank).
Your mileage may vary... especially if temps don't warm up during the dayPaul, Sue & Wonder Dog Zane
'18 Solitude 310 GK
"15 F-350 6.7, DRW, CC
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10-14-2022, 05:00 PM #7
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Have you considered a bilge heater? They start heating at 35 degrees and turn off at 40. All you do is plug it in and the "bilge"stays warm, no need to run the furnace.
Stephen and Judy
2022 Reflection 150 Series 260RD (Stella)
2017 Chevy Silverado 2500 HD (Blue)
Traded - 2018 Forest River Rockwood Minilite 2104S
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10-14-2022, 05:44 PM #82023 Momentum 398M-R
2023 Ford F-450
SOLD - 2021 Reflection 311BHS
SOLD - 2017 Momentum 399TH
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10-14-2022, 08:12 PM #9
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We routinely leave the furnace set to 45 deg. when we're away. Did that for the whole month of February this year in New Mexico (temps got into the mid teens) while we were out of the country. My BIL kept an eye on things and only switched out one tank. We'll do that again next week when we leave for a week to clear out or storage unit in South Carolina. There's no need to even worry about the tank heaters - especially if the tanks are empty or completely full. They're not really needed with the temps you're expecting, but the pads won't overheat and it takes a long time at low temps to bring a full tank of fresh water down to freezing. Our 2016 Reflection 337 didn't have tank heaters, wasn't as well insulated as our Solitude, and endured long stretches of lows in the lower 20s and upper teens with the daytime highs not getting above freezing... oh, and 40 MPH winds. The tanks never froze - but the water lines to the kitchen island did (I remedied that after the first time). We've wintered in northern Maryland and New Mexico in the Solitude and have had zero freezing issues just using the furnace.
RobU.S. Army Retired
2012 F350 DRW CC LB Lariat PS 6.7
2020 Solitude 310GK-R, MORryde IS, disc brakes,
Sailun LRG tires, solar, DP windows, W/D
(Previously in a Reflection 337RLS)
Full time since 08/2015
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10-18-2022, 03:04 PM #10
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Good points and ideas here, thanks for the input everyone.
Kept the belly heaters on last night as a trial, but then clouds moved in and it never got below 34 early this AM.
I think I'll just set the furnace to as low as I can if all else fails. There's a TSC just 10 minutes from home, so propane refill isn't a worry.Colin & Tracy
'21 Chevy Silverado 3500HD LTZ/Z71/SRW, Long bed, Anderson UH
'21 Solitude 310 GK-R
Channging Battery Type?
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