TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飞机维护手册 21 空调(9)

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28-Volt aircraft
The fan is electrically supplied by "BUS 3" bar and protected by a fuse located in PL3 fuse panel.
AFAB
Validity : S / N 585 - 9999 21 20 00 (EM) Page 2
AUG 01
 
E. B17 cabin blower (option) (Figures 1, 3, 3A, 3B, 3C and 3D)
A blower, secured to the rear face of frame C6 and tapping outside air at the root of the vertical stabilizer, accelerates the cool air flow to the rear passengers. The blower ON/OFF switch is located on the overhead panel, forward of the air outlets.
The blower is electrically supplied by "BUS 2" bar and protected by "CB111" circuit breaker located in PL1 circuit breaker panel.
AFAB
Validity : S / N 585 - 9999 21-20-00 (E.)Page 3
AUG 01
 
1 - L.H. front air outlet
2 - L.H. NACA air intake
3 - Front air intake
4 - B13 radio fan (if installed)
5 - Radio ventilation
6 - R.H. NACA air intake
7 - R.H. front air outlet
8 - Rear air outlets
9 - B17 cabin blower (option)
10 - Rear air intake
 

 
Distribution - Description and operation
Figure 1
AFAB
Validity : S / N 585 - 9999 21 20-00 (EM) _ Page 4
SEP 04
 
  1 - L.H. NACA air intake
2 - Radio ventilation
3 - R.H. NACA air intake
4 - Front air outlets

 
 

 
AFAB
Validity : S / N 585 - 9999 21 20-00 (EM) Page 5
AUG 01
 
Distribution - B17 cabin blower (option)
Figure 3 - S / N 585 - 587
 
 
Distribution - B17 cabin blower (option)
Figure 3A - S / N 588 - 822. 850 - 887. 889 - 947.
and S / N 823 - 849. 888 Pre-Kit OPT10 920700
AFAB
Validity : S / N 585 - 9999 21-20-00 (EM) Page 7
AUG 01
 
Distribution - B17 cabin blower (option)
Figure 3B - S / N 823 - 849. 888 Post-Kit OPT10 920700
 
 
Distribution - B17 cabin blower (option)
Figure 3C - S / N 948 - 952
 

  5 6 1 - B17 cabin blower switch
2 - Rear air outlets
3 - Duct in cabin
4 - B17 cabin blower
5 - Duct in rear fuselage
6 - Rear air intake

 

 
Distribution - B17 cabin blower (option)
Figure 3D - S / N 953 - 9999
AFAB
Validity : S / N 585 - 9999 21-20-00 (EM) Page 10
AUG 011
 
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 control box,
- the distribution hoses and the diffusers.
　
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