Initial Pilot Ground School EC 130 B4 Initial Pilot Ground School Chapter 13 Heating, Demisting and Air Conditioning

Chapter 13 - Heating, Demisting, and Air Conditioning Heating System …………………………………………………………...… 13.3 Heating and Demisting Outlets ……….…………………………......…… 13.4 Heating and Demisting Control Knobs ………………………………….. 13.6 Air Conditioning System …………………………………..………………. 13.7 Review Questions ………………………………………………………….. 13.15 13.2

Venturi Throat on Heating Injector Heating System Heating Controls P2 / Ambient Air Mixer Venturi Throat on Heating Injector 13.3

Heat and Demisting Outlets Heat outlets are under the front seats Demisting outlets are across the front windshields 13.4

Convergent Injectors Hot Air Outlets Windshield Demisting Diffusers Hot air tapped at the engine centrifugal compressor outlet (P2), is mixed with ambient air drawn in by 2 convergent injectors. Hot air is diffused into the cabin through 3 hot air outlets and the windshield demisting diffusers. Hot Air Outlets Windshield Demisting Diffusers Use of P2 air bleeds is forbidden above the engine maximum continuous rating (Ng or T4). 13.5

Heating and Demisting Control Knobs These are located on the floor between the pilot and co-pilot seat. Caution should be exercised when turning these knobs “OFF”. They should be turned off ‘loosely’, otherwise they will be very difficult to open the next time you want heating or demisting. 13.6

Overhead Air Conditioning Controls Pre - Mod Post - Mod 13.7

Condenser and Fan Core Fan Dryer 13.8

Exhaust Ducting 13.9

Condenser Air Inlet Filtration System Air Flow 13.10

Air Conditioning Components 13.11

Evaporator 13.12

Compressor 13.13

Front Evaporator Removed 13.14

Review Questions 13.15

110. What are the heating and demisting functions controlled by? C. Rotary knobs on the floor.

111. Where, on the floor, are the heating and demisting rotary control knobs located? B. Between the pilot and co-pilot seats.

112. What important consideration should be remembered when turning off the heat or demisting rotary knob? C. Turn them off loosely. If turned off tightly they will be very hard to turn back on.

Initial Pilot Ground School EC 130 B4 Initial Pilot Ground School End of Chapter 13 Heating, Demisting and Air Conditioning