Back Figure 1-22. Fuel Burning Winterization System Diagram and Heater Control Schematic Diagram Instruction Plate | Up TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual | Next Figure 1-24. Load Bank Connection and Operation Instruction Plate |