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Old 01-09-2013, 01:21 PM   #1
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Recommended Temperature For Draining Fresh Water Tank

I know that water freezes at 32 degrees F. and have been on the road when the ambient air temperature has dropped to 28 degrees or so but wondering what is the recommended lowest temperate that you should allow before draining the water tanks when not using the MH. I would hate cause damage by lines and tanks freezing.
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Old 01-09-2013, 01:33 PM   #2
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is the system not protected somehow?
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Old 01-09-2013, 01:45 PM   #3
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Your coach has a heat hose that runs from the furnace to the basement. As long as you keep the FURNACE going, It send heat to the water area. Make sure you close the basement doors while using the furnace. If you leave a basement door ajar to run a sewer hose out, It lets in too much air and can cause a problem. That is why there is a access plate at the bottom of the water compartment.
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Old 01-09-2013, 01:50 PM   #4
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Quote:
Originally Posted by ga traveler View Post
Your coach has a heat hose that runs from the furnace to the basement. As long as you keep the FURNACE going, It send heat to the water area. Make sure you close the basement doors while using the furnace. If you leave a basement door ajar to run a sewer hose out, It lets in too much air and can cause a problem. That is why there is a access plate at the bottom of the water compartment.
Some RV's have that heat hose, others don't. The OP will need to check it out to be sure.
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Old 01-09-2013, 01:54 PM   #5
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Sorry, I just noticed you asked about storage and freezing. If the temp. is going down for a short time below freezing, You will be OK. However if it gets cold and stays below freezing for several days you are in danger of freezing. If it is going to get down to mid twenties for a short time and go right back up you will PROBABLY be all right. The best thing to do is just be safe and blow out the lines if freezing temps are forecast.
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Old 01-09-2013, 04:53 PM   #6
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If I"m not using it or somehow actively protecting it 35 possibly 40.

If I am using it. I'm protected by design to 20, and by additional modifications to 10, the last requires I run both furnace and generator however.

I've been to minus six.. cost me less than 10 bucks to fix the damage (NOTE Ice maker line was still air-charged though).
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Old 01-10-2013, 08:28 AM   #7
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Thanks to all for the input. I went home last night and drained the fresh water tank leaving the drain valves open as a precautionary measure. As for supplemental heating of the bay where the tank is located, I did not see any vent from the furnace to provide heat when out and about.

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Old 01-10-2013, 09:15 AM   #8
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Martin,
You need to protect the pipes by either blowing them out pr filling them with rv antifreeze. The pipes will freeze
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Old 01-10-2013, 09:18 AM   #9
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Oops. Darned phone. Pipes will freeze before tank.
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Old 01-11-2013, 10:00 PM   #10
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Quote:
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Thanks to all for the input. I went home last night and drained the fresh water tank leaving the drain valves open as a precautionary measure. As for supplemental heating of the bay where the tank is located, I did not see any vent from the furnace to provide heat when out and about.

Martin
Others have already said and I agree, blow the water lines and leave the faucets open. You do need to close the drain valve on the water tank, you don't want little critters climbing into it and makeing a home there. Also somthing yo did not mention, you need to draing the balck and Grey tank. Get yourself 1 gallon of RV anti-freeze and pour some down each sink so that it fills the P-trap and then pour the rest of it down the toilet in order to protect the Black tank lines.
do this after you have drained the tanks.
One other thing don't forget about the Hot water heater, drain it also.
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