[Trainer]

Jerry, With 30 amp shore power, the 120 vac element will be energized providing 5000 btu of heat. This will keep the basement and the interior above 33 degrees down into the 20 degree range. How low into the 20s I do not know. Think of heating the whole coach with one space heater from Walmart.

In frigid weather, the 120 vac element will keep the coolant in the AH heater tank above 33 degrees. But 35 degree coolant will not warm the interior above freezing.

So unless you have additional heaters for the interior, and the utility bay, I do not think 30 amp power will keep your coach in the frigid weather I think you will be in.

If fresh water system is not winertized, what ever you do, have slides in, cabinet doors in areas where there are water lines open to let warm air into the cabinet.

The diesel burner will keep the coach warm in frigid conditions.

Watch for power grid failure. You loose 120 vac heating and battery charging if on diesel burner.