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Used to inhibit
recirculation of
conditioned air.
• Indicates
recirculation has
been selected off.
–
TRIM AIR Switch
OFF
Used to inhibit trim air.
• Indicates trim
air is selected off.
–
HOT/COLD Toggle
Switches
Used to control
temperature of
PACK discharge in
manual mode.
L (R) PACK Switches
FAIL
OFF
Used to inhibit the air conditioning units
• Indicates a PACK failure.
• PACK has been selected off.
–
–
PACK CONTROL Selector
• NORM
• LO
• HIGH
• MAN
Used to enable the automatic features of the
Air Conditioning System Controllers (ACSC)
which measure, calculate, and control the
airflow of all auto features.
Automatic flow control
Pack operates in low flow mode
Pack operates in high flow mode
Flow control valve is driven full open
(ACSC is disabled).
–
–
–
–
AUX PRESS Switch
ON
Used to control
alternate
pressurization source
through the trim air
system for the cabin
pressurization.
• AUX PRESS
has been selected on.
–
RAM AIR Switch
ON
To supply an alternate
air supply source (in the
event of a dual pack
failure) for use in-flight
at altitudes below
15,000 feet.
• – Ram air vent
valve has been
selected open.
GX_13_015
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
13-18 For Training Purposes Only
Sept 04
AIR CONDITIONING SYSTEM
The air conditioning system is comprised of flow control valves, air conditioning
units, a ram air system, distribution system ventilation system and emergency
pressurization system.
The flow control system regulates airflow from the pneumatic duct to the air
conditioning units.
The ACUs decrease the temperature and moisture content of the bleed air from the
pneumatic system. The ACUs are located in the aft equipment bay.
An alternate supply of fresh air is available via the ram air system.
Conditioned air is routed from the cooling packs to the mix manifold (distribution
system).
The emergency pressurization system provides an alternate pressurization source for
the cabin in the event of the loss of both cooling packs.
The Avionics and Cockpit Display Exhaust system ensures the ventilation of the
avionic equipment and cockpit displays to prevent excessive heating.
On the Global 5000, the same functions are also carried out for the avionics rack.
Ventilation
System
Ram
Air
Left
Air Conditioning
System
Right
Air Conditioning
System
Temperature
Control
System
Right
Flow
Control
System
Pneumatic
System
Left
Flow
Control
System
Aft
Outflow
Valve
Forward
Outflow
Valve
Distribution
System
Aft Passenger
Compartment
Forward
Passenger
Compartment
Flight
Compartment
GX_13_016
For Training Purposes Only
Sept 04
13-19
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
AIR CONDITIONING PACKS
The cooling packs decrease the temperature and moisture content of the bleed air from
the pneumatic system. The packs are located in the aft equipment bay.
The air conditioning package is composed of:
• Two cooling packs which decrease the temperature and moisture content in the
bleed air and deliver conditioned air to the mix manifold
• A RAM AIR system which has two main functions:
• To supply air to the cooling packs’ dual heat exchangers to cool the bleed air
flow
• To supply an alternate air supply source (in the event of a dual pack failure) for
use in-flight at altitudes below 15,000 feet
RAM Air
Outlets
Left Pack
Pack Discharger
Duct
Aft Pressure
Bulkhead
Reference
RAM Air
Inlet Scoop
RAM Air
Valve
Right Pack
Mix
Manifold
Recirculation Fan (LH)
GX_13_017
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
13-20 For Training Purposes Only
Sept 04
The AIR CONDITIONING synoptic is selected using the EICAS control panel,
located on the pedestal.
STAT
HYD
AC
ELEC
BLEED
AIR
COND
DC
ELEC
FUEL
FLT
CTRL
SCROLL
EICAS
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