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Avionics and Cockpit Display Ventilation............................................................................. 02-03-09
Description................................................................................................................. 02-03-09
Cabin and Cockpit Air Distribution System ............................................................... 02-03-10
Pressurization.....................................................................................................................02-04-01
Description................................................................................................................. 02-04-01
Components And Operation ......................................................................................02-04-01
Integrated Air System Controllers (IASC) ..................................................................02-04-01
Outflow Valve ............................................................................................................. 02-04-01
Safety Valve ............................................................................................................... 02-04-01
Automatic Pressurization Modes ...............................................................................02-04-02
Manual Pressurization Mode ..................................................................................... 02-04-03
Pressurization Schedule — Climb and Cruise ........................................................... 02-04-04
Pressurization Schedule — Descent and Hold (<25 000 ft)....................................... 02-04-04
REV 1
AIR CONDITIONING/PRESSURIZATION
Table of Contents (Cont)
Volume 2 Flight Crew Operating Manual Sep 13/2004
02-00-02 CSP 100-6 REV 1
Controls and Indications...................................................................................................... 02-04-05
Pressurization Control Panel ..................................................................................... 02-04-05
Landing Sequences At Field Elevation Greater Than 7850 ft.................................... 02-04-06
Takeoff and Return to Base Sequence At Field Elevation Greater Than 7850 ft....... 02-04-06
Climb Mode with Selected Landing Field Elevation Greater Than 7850 ft................. 02-04-06
Cruise Mode with Selected Landing Field Elevation Greater Than 7850 ft ............... 02-04-06
Takeoff From Airfield Above 7850 ft and Landing Field Elevation Above 7850 ft ...... 02-04-07
Takeoff From Airfield Less Than 7850 ft
and Landing Field Elevation Above 7850 ft ...................................................... 02-04-07
Takeoff and Return to Base ....................................................................................... 02-04-08
Takeoff from Airfield Above 7850 ft
and Landing Field Elevation Less Than 7850 ft .............................................. 02-04-08
ECS Synoptic Page ................................................................................................... 02-04-09
EICAS Messages ................................................................................................................ 02-04-10
AIR CONDITIONING/PRESSURIZATION
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 02-01-01
INTRODUCTION
The environmental control system (ECS) provides regulated conditioned air to the flight deck and passenger cabin by using
an air conditioning package (PACK).
Aircraft pressurization is accomplished by regulating the overboard discharge of the conditioned air.
Ventilation is provided for the electronic equipment on the flight deck and avionics racks.
REV 1

AIR CONDITIONING/PRESSURIZATION
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 02-02-01
BLEED AIR SYSTEM
DESCRIPTION
High pressure (HP) bleed air is routed through high pressure valves in the ducting to the wing anti-ice system. Intermediate
pressure (IP) air is routed through intermediate pressure valves to the environmental control system (ECS).
The IP ports of the engine supply a common manifold (isolated left and right by the cross bleed valve) that can also be
supplied by the APU or an external ground cart. Regulating valves and check valves are installed in the aft equipment bay
ducting to control bleed air from the left and right engines and APU. The IP bleed air system also includes air control
switches and a leak detection system. Pressure sensors in the bleed air lines send information to the integrated air system
controller (IASC) which processes the information for display on the EICAS.
CFO0201002_001
GROUND
SOURCES
EICAS
ANTI-ICING
SYSTEM
ENGINE
STARTING
AIR
CONDITIONING
SYSTEM
　
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