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Old 11-08-2018, 11:17 AM   #1
jfaberna
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furnace set for 40F for freeze protection?

I'm not ready to complete winterize my rig yet as it will be used around Thanksgiving.

It's connected to 50Amps but only the furnace heats the basement and tanks. I don't have the electric heaters on the tanks.

The weather here is above freezing the next 2 weeks except for a few nights in the 20s. So I'm going to set the furnace to 40F and hope that works.

My question is about slides.If they are out the rig is pretty well seals from the cold.

What about if the slides are in? Any risk in not getting the heat where it needs to go or is letting too much outside air in?

Thoughts?
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Old 11-08-2018, 11:28 AM   #2
jsmitfl
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Jim,
I left my furnace on 42 for a few weeks before we left Idaho. Our temps were in the low teens at night. I did leave the electric side of the water heater on also. Had no problems. I did have our slides out because we were cleaning and loading. If you need yours in what if you just open the slide that covers the registers just far enough to clear them.
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Old 11-08-2018, 12:02 PM   #3
jfaberna
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Quote:
Originally Posted by jsmitfl View Post
Jim,
... If you need yours in what if you just open the slide that covers the registers just far enough to clear them.
I think the RV is not sealed well if any slide is partially open. Closed or open seem to be the best seal. Not sure which is better. I've felt the breeze blow through when I have the slide part way out. Since the step air return to the basement is next to my slide switches I feel that breeze every time I open or close the slides.

At this time I really don't have a reason that the slides can't be completely out so that's what I'll do. I have blown out all lines except black water flush and have drained all tanks. So I'm good till Thanksgiving week at which time the water will be back in use. Once the RV is in use, I'm not too worried about the cold if we get any.

Jim A
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Old 11-08-2018, 12:15 PM   #4
DQDick
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On our 2010 enough vents were open to run the furnace with the slides in, on our 2017 we can't run the furnace with the slides in at all.
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Old 11-08-2018, 01:49 PM   #5
mazboy
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I would just put the sides in and let it go. if it is only going to do to freezing for short times it won't damage anything.
but, if you do keep the heat on you need to know how much gas you will need and you can keep the sides in. our vents are in the center of the trailer.
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Old 11-08-2018, 02:25 PM   #6
Eagleback
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If you only put the slides out partially get on the roof and make sure the seals are in the out position and keep the snow off unless you have toppers or the melt water will find its way in.
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Old 11-08-2018, 03:19 PM   #7
laverdur
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The question is whether heat vents are blocked with the slides in. If so, you could get overheating of the furnace. In my Monty all the vents remain open when the slides are in so I could get away with running the furnace.
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Old 11-08-2018, 04:07 PM   #8
BuilderBob
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We leave the slides in with the heat set at 45! Even if you cover a vent it wont hurt any thing it just makes the air come out more some wears else.
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Old 11-08-2018, 05:49 PM   #9
beeje
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With no waste or fresh water in the tanks I would just keep a ceramic heater centrally located, say on the kitchen counter and set it on low to keep it above freezing. It takes quite some time even in the teens to freeze things. The warmth of the day takes a while to were off.
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Old 11-09-2018, 04:22 PM   #10
bethandkevin
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We pull the slides in and set the stat to 50. In the past, we set it to 40. We decided it took longer than we liked to warm the trailer from 40. We do this between weekend stays.
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