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LEARN HOW TO RUN 2 RV A/Cs ON A 30 AMP CONNECTION
by Liz McDade
(BIloxi, MS)
How to Keep Your RV's Holding Tanks from Freezing
I am staying in an MS campground, and when the temperature drops to between 25 and 32, we were told to keep the dump valves cracked partially open and let the water run in a small stream all night to avoid freezing. Last night when I did that after first dumping a full tank of black, then gray - I awoke to the sound of water dripping, and it wasn't the sinks. Somehow the black tank became full of water from what was running in the sinks and had backed up into the toilet bowl and was overflowing. I had to go outside and pull the valve completely open on the black tank - then all the water went down. Now I have a very wet bathroom carpet - out into the walking area.
Is this what I should have done? Without winterization and living in an RV when the temperatures drop, what IS the correct procedure. I was told that if I left water in the tanks and the valves closed, the tanks and the valves could freeze and crack. But I had also read that it was bad to leave both valves open because the bacteria from the black tank can get into the gray tank, and I could be breathing it through venting in the sinks and shower.
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LEARN HOW TO RUN 2 RV A/Cs ON A 30 AMP CONNECTION
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