Scuffer:
Our Georgetown MH came with the Arctic Pack. I have a .pdf of the data sheet for it. If you'd like a copy, send me an e-mail address in a private message.
My personal opinion is that it's a dumb design with potential for doing significant damage if the tanks are plastic, and for leaving you stranded with no house power. The installation on our MH was 2 pads each on the black tank and the grey tank. The pads aren't very big - maybe 8" x 4". They have integral thermostats that aren't adjustable.
When the circuit is active, the pads are turned on at 40F and off at 64F. Who needs to heat up the sewage to over 60 degrees?! The damage potential comes if the heaters fire up when the tanks are empty. They draw 7 amps each from the house 12Vdc system, so that was 28A for the four pads on my MH.
There's no logic to check if the tanks have liquid in them, so 84 watts into 32 square inches of polyethylene tank material could melt through if the tanks are empty.
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Frank and Eileen
No longer RVers or FR owners
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