The "Artic" kit on my 325 (that's how it's labelled) runs electrical resistance heating pads on the black and grey tanks (but NOT the potable tank). According to the vendor documentation, the thermostat cuts in at 40F and off again at 65F. Why would you want to heat the waste tank contents to 65F? Also, since contaminants reduce the temperature at which water freezes, why bother turning them on at 40 degrees?
They're 12V DC and each pad draws about 5 amps. There are two pads on each tank, I think. There are no elements on valves or pipes.
It's a very peculiar system and seems to address a non-problem. I sure don't plan to use them!
Frank and Eileen
No longer RVers or FR owners