*
fwd -forward
*
gly -galley
*
htr -heater
*
IMMTE -integrated mix manifold temperature error
*
MFD -multi-function display
*
manf -manifold
*
mgmt -management
*
OPAS -overhead panel arinc 629 system
*
OVHT -overheat
*
pnl -panel
*
pwr -power
*
recirc -recirculation
*
rly -relay
*
snsr -sensor
*
SOV -shutoff valve
*
TAT -total air temperature
*
TCV -temperature control valve
*
temp -temperature
*
util -utility
*
vlv -valve
*
WOW -weight-on-wheels
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777 AIRCRAFT MAINTENANCE MANUAL
AIR CONDITIONING -INTRODUCTION
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777 AIRCRAFT MAINTENANCE MANUAL
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Page 4 D633W101-BEJ Jan 05/2002
AIR CONDITIONING -GENERAL DESCRIPTION -CONTROL
General
These flight deck panels let you control the air conditioning system:
*
Air conditioning panel
*
Bleed air/pressurization panel
*
Cargo temperature select panel
*
Sidewall panels (Capt and F/O foot and shoulder heater controls).
These passenger compartment panels let you control the air conditioning system:
*
Cabin system control panel (CSCP)
*
Cabin area control panels (CACPs)
*
Galley heat controls in the galleys.
These components in the MEC control the functions of the air conditioning system:
*
Two cabin temperature controllers (CTCs)
*
Two air supply cabin pressure controllers (ASCPCs)
*
Two environmental control system miscellaneous cards (ECSMCs)
*
Two equipment cooling controllers (ECCs).
Cabin Temperature Controller
The CTCs control these functions of the air conditioning system:
* Pack flow, regulation (on) or off
EFFECTIVITY
BEJ ALL
*
Pack cooling/mix manifold temperature
*
Trim air, regulation (on) or off
*
Zone temperature
*
Recirculation air.
Air Supply Cabin Pressure Controller
The ASCPCs control these functions:
*
Pack flow schedule
*
Pack flow, on or off
*
Backup pack flow (CTC failed)
*
Trim air, on or off
*
Pressurization system
*
Pneumatic system.
Environmental Control System Miscellaneous Cards
The ECSMCs control these functions of the air conditioning system:
*
Air distribution and ventilation
*
Equipment cooling
*
Cargo heating
*
Supplemental heating.
Equipment Cooling Controller
The ECCs control the supply fans and override valve in the equipment cooling system.
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AIR CONDITIONING -GENERAL DESCRIPTION -CONTROL
Interfaces
The air conditioning controls have interfaces with each other, the AIMS, the electrical load management system (ELMS), and the auxiliary power unit controller (APUC).
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AIR CONDITIONING -GENERAL DESCRIPTION -CONTROL
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D633W101-BEJ Jan 05/2002
AIR CONDITIONING -FLIGHT DECK CONTROLS
General
These flight deck panels give the flight crew control of the air conditioning subsystems:
*
Air conditioning panel on the P5 overhead panel
*
Bleed air/pressurization panel on the P5 overhead panel
*
Cargo temperature select panel on the P61 overhead maintenance panel.
Cargo Temperature Select Panel
These controls are on the cargo temperature select panel:
*
Aft cargo temperature selector
*
Bulk cargo temperature selector.
Air Conditioning Panel
These controls are on the air conditioning panel:
*
Equipment cooling switch
*
Upper and lower recirculation fan switches
*
Flight deck temperature control
*
Cabin temperature control
*
Air conditioning reset switch
*
Left and right pack switches
*
Left and right trim air switches.
Sidewall Panels
These controls, related to the air conditioning system are on the left and right sidewall panels:
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