Learjet 20 Series Pilot Training Manual page 172

HEAT
EXCHANGER
RAM AIR OUT
TEMP
CONTROL
Figure 9-2. Pneumatic System—SNs 24-350 and Subsequent and 25-227 and Subsequent
9-4
LEARJET 20 SERIES PILOT TRAINING MANUAL
ENGINE
FRONT
FRAME
HEAT
BLEED-AIR
SHUTOFF VALVE
SERVO
AIR
MANIFOLD
RAM AIR IN
PRESSURE
CABIN
AND HEAT
FLOW
H-VALVE
CONTROL
REGULATOR
VALVE
ALCOHOL
ANTI-ICE
BLEED-AIR
SHUTOFF
ENGINE
FRONT
FRAME
HEAT
FOR TRAINING PURPOSES ONLY
PRESSURIZATION
ANEROID SWITCH
9,500 FT (± 250 FT)
EMERG
PRESS
VALVE
BLEED-AIR
MANIFOLD
HYD
RESERVOIR
PRESS
PRESS
JET PUMP
OVERTEMPERATURE SWITCH
EMERG
PRESS
VALVE
VALVE
PRESSURIZATION
ANEROID SWITCH
9,500 FT (± 250 FT)
FlightSafety
international
LH AIR BLEED
EMER
ON
OFF
LH ECS VALVE
TO CABIN
L CAB AIR
OVERTEMPERATURE SWITCH
WING HEAT
WINDSHIELD HEAT
R CAB AIR
TO CABIN
RH ECS VALVE
OFF
ON
EMER
LEGEND
BLEED AIR
REGULATED SERVO AIR
RAM AIR
CONDITIONED AIR