ACAC
Validity : S / N 1 - 584 21 40-00Page 3
(EA) AUG 01
1 - Exhaust pipe
2 - Heat exchanger
3 - Front box
14780000AAAAW Z14101
Heating - Heat exchanger
Figure 2
1 - Windshield diffuser
2 - R.H. NACA air intake
3 - Front passenger deflector (feet)
4 - Control box
5 - Pilot diffuser (feet)
6 - Rear passengers diffuser (feet)
7 - Cabin air mixer
Air regulation - Description and operation
Figure 3
ACAC
Validity : S / N 1 - 584 21-40-00Page 5
(EA) AUG 01
Aerateur Air outlet
Heating - Control box
Figure 4
HEATING
DESCRIPTION AND OPERATION
1. GENERAL
Heating allows air regulation using the air systems from the heat exchanger and the fresh air intakes. Temperature is controlled by the cold air / hot air ratio.
The heating system consists of :
- the heat exchanger,
- the cabin air mixer,
- the demisting box,
- the control box,
- the distribution hoses and the diffusers.
2. LOCATION
COMPOSANT QTE ZONE PORTE D'ACCES REFERENCE
Heat exchanger 1 100 131 21-40-01
Cabin air mixer 1 100 131 21-40-02
Demisting box 1 250 211L/ 211R 21-40-00
Control box 1 230 254R 21-40-00
Distribution hoses and diffusers / 100 / 200 131 / 211 / 218A /
219 /235 /236 21-40-00
3. DESCRIPTION
A. Heat exchanger (Figure 2)
The heat exchanger, installed on the exhaust pipe, heats the air coming from the air intake located on the left, under the propeller spinner dome.
B. Cabin air mixer (Figure 5)
The cabin air mixer mixes the hot air coming from the heat exchanger with the cold air coming from the R.H. NACA air intake.
Hot air / cold air adjustment is ensured by a fire cut-off shutter controlled from the cabin via the control box located on the R.H. side of the instrument panel strip.
The cabin air mixer is located aft of the firewall, at front passenger feet level.
C. Demisting box (Figures 3 and 3A)
The demisting box can be shut off by a fire cut-off shutter and allows hot air distribution onto the windshield via two diffusers.
This box is supplied with hot air via a hose connected to the heat exchanger.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飞机维护手册 21 空调(11)
