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H9
0
I
O-Hl2
A
C
H5
H11
H11A
H11B
Hl3
I
H5B
H14
H5A
I
H4
COMM
NC
H 4
H2
H15
TO
SAFETY
SWITCH---D'l
oc
oooc
NC
NO
NC
Dl3
TO UP &
LOCKED
INDICATOR
----D8-----TODYNAMIC
BRAKING
RELAY
NOTE
This
System
is
the
Standard
Installation
on aircraft
TD-127
and
TD-203
thru
TD-452,
and is
the
Optional
Installation
on Airplanes
Serial TD-453
thru
TD-533,
1.
Main
Bus
Bar
9. 300°
F
High
Temperature
Control
2.
Switch-type
Circuit
Breaker
10. Solenoid Valve
(20 Amp)
11.
Heater
Ductstat
3.
Air Valve
Switch
12.
Heater
Blower
4.
Fuse
13.
Heater
Fuel Pump
5. Changeover Switch
14.
Landing
Gear
Up Limit
and
6.
Heater
Ignitor
Up
Indicator
Switch
7.
Heater
Fuel Pump
15.
Heater
Blower
Switch
8.
Resistor
(3 Ohm 10
Watt)
CABIN
HEATER
CIRCUIT
Standard
TD-127
and
TD-203
thru
TD-452
Optional
TD-453
thru
TD-533
6-27
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Table of Contents
Troubleshooting
