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Old 03-13-2013, 09:26 PM   #1
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LP tank

Hi, we have a 1989 TravelMaster with a 46lb tank (I think) I know your not supposed to fill past 80% so I was wondering how long would a tank last on average if we are running just heat overnight with outside temps around 40-45 and setting thermostat to 68-70. We just got the RV and this is our first run with it and we will have our young kids with us so I just want to have a rough idea how it will go. Thanks in advance
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Old 03-13-2013, 09:39 PM   #2
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Depends on a few factors. I have a 26' Class C that is not well insulated and a few weeks ago we were visiting family and stayed in the MH. The outside temps were in the low 40's and mid 30's at night. In 2 days we went through 1/4 tank of propane (about 1/2 your size) and did a little cooking inside.

You normally don't fill past 80% because, I was told, it allows the propane to expand and contract. Not a scientist so can't argue with the logic.
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Old 03-13-2013, 10:23 PM   #3
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Thank you! Ours is about that size, I have no idea if it is well insulated lol but that gives me a rough idea that we should be good, we will only be using it for 2-3 nights. Thanks again!
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Old 03-14-2013, 08:40 PM   #4
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We have a 10 gallon LP tank on our class C and the usage is about the same under similar circumstances.
Don't worry much about overfilling, there is a valve in the tank that will automatically close when it gets full, or 80%. It does on ours anyway, and it's a 1981 model.
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Old 03-16-2013, 09:55 AM   #5
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We have used it for 2 nights already and the gauge hasn't really moved
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Old 03-16-2013, 04:49 PM   #6
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With a tank that size you could run the furnace just about all day for 2-3 days with no issue.
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Old 03-16-2013, 09:29 PM   #7
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The propane filler should also open the bleed valve as a visual check that the tank is full to 80% even if the overfill prevention valve fails.

Also when you pull in for a refill, first turn off the fridge and HWS and furnace.
Should do that before refuelling as well.
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Old 03-18-2013, 10:30 PM   #8
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Well our trip was extended and since Thursday night when we filled up and only using the heat at night we just got down to 1/3 of a tank. I am very pleased with how it worked out! Thanks for all the tips!
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