Chevrolet ranger rt Owner's Manual page 45

Heating and Cooling
42
Propane Furnace
The furnace is installed with the factory installed propane option.
The furnace is controlled by the combination thermostat located
above the rear bed. The furnace requires propane and 12V
power. The furnace uses minimal electricity compared to the
heat pump, and can be used without shore power or generator
use.
Keep the aisle in front of the furnace clear of any obstructions
when using the furnace to allow air circulation.
The furnace can operate when outside temperatures are below
freezing.
Optional propane furnace
© 2014 by Roadtrek, Inc.