AM.II.G.S8
SkillLocate the procedures to troubleshoot a combustion heater.
From the FAA library
- Chapter 16: Cabin Environmental Control Systems › Combustion Heaters › Ventilating Air System
Combustion Air System The air used in the combustion process is ambient air scooped from outside the aircraft, or from the compartment in which the combustion heater is mounted. A blower ensures that the correct quantity and pressure ... sent into the chamber. Figure 16-99. A modern combustion heater. Some units have regulators or a relief valve to ensure these parameters. The combustion air is completely separate from the air that is warmed and sent into the cabin…
- Chapter 16: Cabin Environmental Control Systems › Combustion Heaters › Safety Features
Figure 16-101. The fuel nozzle located at the end of the combustion chamber sprays aircraft fuel, which is lit by a continuous sparking ignition system spark plug. Figure 16-102. Examples of ignition units used on combustion heaters. Safety ... Features Various automatic combustion heater controls prevent operation of the heater when dangerous conditions exist. As stated, a duct limit switch cuts off fuel to the heater when there is not enough airflow to keep the heater duct below…
- Chapter 16: Cabin Environmental Control Systems › Combustion Heaters › Controls
Ignition System Most combustion heaters have an ignition unit designed to receive aircraft voltage and step it up to fire a spark plug located in the combustion chamber. Older combustion heaters use vibrator-type ignition units. Modern units have electronic ... ignition. [Figure 16-101] The ignition is continuous when activated. This occurs when the heater switch is placed in the ON position in the flight deck, and the combustion air blower builds sufficient air pressure in the combustion chamber…