*
Captain shoulder heater control (left sidewall panel)

*
First officer foot heater selector (right sidewall panel)

*
First officer shoulder heater control (right sidewall panel).

Bleed Air/Pressurization Panel
These controls are on the pressurization part of the bleed air/ pressurization panel:
*
Forward and aft outflow valve AUTO switches

*
Forward and aft outflow valve manual switches

*
Landing altitude selector.

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777 AIRCRAFT MAINTENANCE MANUAL

AIR CONDITIONING -FLIGHT DECK CONTROLS

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AIR CONDITIONING -CONTROLLERS

General
The air conditioning system uses these controllers:
*
Cabin temperature controllers (CTCs)

*
Air supply cabin pressure controllers (ASCPCs)

*
Equipment cooling controllers (ECCs). These controllers are in the main equipment center.

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777 AIRCRAFT MAINTENANCE MANUAL

AIR CONDITIONING -CONTROLLERS

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AIR CONDITIONING -ECS BAY

General
The left and right cooling packs are in the ECS bay. Access to the ECS bay is through the ECS doors in the wing-to-body fairing.
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777 AIRCRAFT MAINTENANCE MANUAL

AIR CONDITIONING -ECS BAY

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777 AIRCRAFT MAINTENANCE MANUAL

THIS PAGE IS INTENTIONALLY LEFT BLANK

21-20-00

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BOEING PROPRIETARY -Copyright # -Unpublished Work -See title page for details.

AIR CONDITIONING -DISTRIBUTION -INTRODUCTION

General
The distribution system has these parts:
*
Main air

*
Flight deck conditioned air

*
Passenger cabin conditioned air

*
Recirculation

*
Ventilation

*
Equipment cooling.

The distribution system lets conditioned and recirculated air flow from the packs and mix manifold to locations in the cabin and flight deck. The ventilation part of the system removes odors from the lavatories and galleys. The equipment cooling part of the system cools electrical and electronic equipment.
See the distribution -ventilation section for more information about the ventilation in the airplane (SECTION 21-26).
See the equipment cooling section for more information about the forward and aft equipment cooling systems (SECTION 21-27).
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AIR CONDITIONING -DISTRIBUTION -INTRODUCTION

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AIR CONDITIONING -DISTRIBUTION -GENERAL DESCRIPTION

General
The distribution system includes ducts and fans that move conditioned and recirculated air through the airplane.
Main Air Distribution
Air from the packs flow through the main air distribution ducts to these locations:
*
Flight deck distribution

*
Mix manifold.

Mix Manifold
The usual flow of air from the mix manifold goes to the passenger cabin conditioned air distribution. The mix manifold also gives air to the flight deck conditioned air distribution if the left air conditioning pack is off. See the main air distribution section for more information about the mix manifold (SECTION 21-21).
Flight Deck Conditioned Air Distribution
The flight deck distribution duct carries conditioned air from the left pack to the flight deck. See the flight deck conditioned air distribution section for more information about air distribution to the flight deck (SECTION 21-22).
Passenger Cabin Conditioned Air Distribution
Eight risers carry air from the mix manifold, below the passenger cabin floor to the overhead distribution ducts above the passenger cabin ceiling. The overhead distribution ducts carry the air to the air outlet ducts in each of the passenger zones. See the passenger cabin conditioned air distribution section for more information about air distribution to the passenger cabin (SECTION 21-23).
　
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