The Truma gets power from Liquid Propane gas, from 110v electrical power, or a combination. The Truma uses 12 volt power for control circuits and blowers only.

The Truma has several heat source modes:

  • GAS: propane
  • EL1: single 110v heating element
  • EL2: two 110v heating elements
  • MIX1: gas burner on low, plus one electric element
  • MIX2: gas burner on low, plus two electric elements

The Truma will never, ever draw energy from your batteries to energize the electric heating elements.


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