Single Aisle Technical Training Manual T1+T2 (CFM 56) (LVL 2&3) Air Conditioning
Single Aisle Technical Training Manual T1+T2 (CFM 56) (LVL 2&3) Air Conditioning
Single Aisle Technical Training Manual T1+T2 (CFM 56) (LVL 2&3) Air Conditioning
AIR CONDITIONING
GENERAL
Air Conditioning System Component Location (2) . . . . . . . . . . . . . . . 2
Air Conditioning System Control & Indicating (2) . . . . . . . . . . . . . . 28
ZONE TEMPERATURE CONTROL
System Presentation (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Pack Presentation (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Flow Control & Pack Components D/O (3) . . . . . . . . . . . . . . . . . . . . 34
Pack Sensors Description/Operation (3) . . . . . . . . . . . . . . . . . . . . . . 60
Cockpit & Cabin Components D/O (3) . . . . . . . . . . . . . . . . . . . . . . . 62
Zone Temperature Control Interfaces (3) . . . . . . . . . . . . . . . . . . . . . . 68
Emergency Ram Air Inlet D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
PRESSURIZATION
System Presentation (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
System Control Interfaces (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
System Monitoring Interfaces (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
GENERAL VENTILATION
System Design Presentation (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
AVIONICS VENTILATION
System Description and Operation (3) . . . . . . . . . . . . . . . . . . . . . . . . 92
System Interfaces (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
FWD CARGO COMPT VENTILATION/HEATING (option)
System Controls Presentation (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
UG913131 - U7PT0M0
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 2
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
SYSTEM OVERVIEW
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 3
Single Aisle TECHNICAL TRAINING MANUAL
- cockpit,
- forward cabin,
- aft cabin.
Two cabin recirculation fans are installed to reduce the bleed air
demand and therefore save fuel. These fans establish a recirculation
flow of air from the cabin zones to the mixer unit. In normal operation,
there are no ECAM indications associated with the cabin fans.
The ACSC controls and monitors the temperature regulation system
for the cabin zones. On the overhead AIR COND panel, the flight
crew selects the desired individual compartment temperature.
The hot air system for cabin temperature control has a trim air Pressure
Regulating Valve (PRV) and trim air valves controlled by the ACSC.
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 4
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 5
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 6
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 7
Single Aisle TECHNICAL TRAINING MANUAL
not fully.
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 8
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 9
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 10
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 11
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 12
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 13
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 14
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 15
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 16
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 17
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 18
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 19
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 20
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 21
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 22
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 23
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 24
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 25
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 26
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21C1COMPLOC01
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM COMPONENT LOCATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 27
Single Aisle TECHNICAL TRAINING MANUAL
VENTILATION SUB-SYSTEMS
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM CONTROL & INDICATING (2) Apr 03, 2013
21 - AIR CONDITIONING Page 28
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM CONTROL & INDICATING (2) Apr 03, 2013
21 - AIR CONDITIONING Page 29
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 30
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P1000000002
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 31
Single Aisle TECHNICAL TRAINING MANUAL
NOTE: Note: Part of the hot air, downstream of the pack FCV, is sent
to the trim air Pressure Regulating Valve (PRV).
Each pack FCV is automatically closed during either a same
side engine start sequence or an opposite side engine start
sequence, if the crossbleed valve is detected open. It reopens
30 seconds after the end of any engine start sequence.
EXCHANGERS - COMPRESSOR
Bleed air is ducted to the primary heat exchanger, then to the compressor.
The air is cooled in the main heat exchanger. It then goes through the
reheater, the condenser and the water extractor in order to remove water
particles from the air entering the turbine.
UG913131 - U7PT0M0 - UM21P2000000002
TURBINE
The air expands in the turbine section, which results in a very low turbine
discharge air temperature. The turbine drives the compressor and the
cooling air fan.
PACK FCV ... RAM AIR INLET FLAP AND BYP VALVE
T1+T2 (CFM 56) (Lvl 2&3) PACK PRESENTATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 33
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 34
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 35
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 36
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 37
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 38
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 39
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 40
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 41
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 42
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 43
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 44
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 45
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 46
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
CONDENSER
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 47
Single Aisle TECHNICAL TRAINING MANUAL
REHEATER
The air, which then contains almost no water, goes to the REHEATER.
The REHEATER uses warm air from the main heat exchanger outlet to
increase again the temperature of the cold air that comes from the water
extractor. This is necessary to vaporize the last remaining water droplets
before the air is sent to the ACM turbine and to prevent damage to the
turbine.
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 48
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 49
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 50
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
AIR CYCLE MACHINE TURBINE & PACK DISCHARGE TEMPERATURE SENSOR AND CHECK VALVE
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 51
Single Aisle TECHNICAL TRAINING MANUAL
ACM FAN
During aircraft operation on ground, the ACM FAN is used to supply
cooling air around the primary and the main heat exchangers.
In flight with ram air available, the fan will be bypassed to prevent a
negative effect on the ACM operation.
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 52
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 53
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 54
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 55
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 56
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 57
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 58
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D1000000002
MAINTENANCE
T1+T2 (CFM 56) (Lvl 2&3) FLOW CONTROL & PACK COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 59
Single Aisle TECHNICAL TRAINING MANUAL
DELTA P SENSOR The pack discharge temperature sensor signals the pack outlet temperature
to the ACSC for ECAM display. The pack outlet temperature sensor also
A DELTA P sensor measures a differential pressure at the Flow Control gives pack overheat warning indications if the pack outlet temperature
Valve (FCV) inlet. This DELTA P, which is equivalent to the airflow, exceeds 88°C (190°F).
is converted into an electrical signal and sent to the ACSC. It is used for
ECAM display and FCV control.
detection.
Pack temperature control:
- up to 180°C (385°F): normal operation,
- 180°C to 220°C (428°F): the ram air inlet flap opens more in order to
increase the RAM airflow.
The pack FAULT light comes on in if there is pack overheat of 260°C
(500°F). If the A/C is on ground, automatic FCV closure occurs.
T1+T2 (CFM 56) (Lvl 2&3) PACK SENSORS DESCRIPTION/OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 61
Single Aisle TECHNICAL TRAINING MANUAL
TEMPERATURE SENSORS
There are two mixer unit temperature sensors, one on either side of the
mixer unit. They give the actual temperature of the mixer unit to the Air
Conditioning System Controllers (ASCSs). The cockpit mixer unit
temperature sensor is connected to the ACSC 1 and the cabin mixer unit
to the ACSC 2. Each mixer unit temperature sensor has two thermistors,
one connected to lane 1 and the other to the second lane of the ACSC.
T1+T2 (CFM 56) (Lvl 2&3) COCKPIT & CABIN COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 62
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D3000000002
T1+T2 (CFM 56) (Lvl 2&3) COCKPIT & CABIN COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 63
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) COCKPIT & CABIN COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 65
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) COCKPIT & CABIN COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 66
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D3000000002
T1+T2 (CFM 56) (Lvl 2&3) COCKPIT & CABIN COMPONENTS D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 67
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) ZONE TEMPERATURE CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 68
Single Aisle TECHNICAL TRAINING MANUAL
temperature regulation (+ or - 2.5°C) from the Flight Attendant Panel
(FAP).
FAN PARAMETERS
The ACSCs receive discrete signals from recirculation and toilet fans for
monitoring. The lavatory and galley extraction and the cabin recirculation
fan operation are used for monitoring and transmission to the SDACs
and CFDIU.
LGCIU 2
Landing Gear Control and Interface Unit (LGCIU) 2 sends a ground/flight
signal to both ACSCs for pack air inlet flap operation. The ground/flight
signal is used for pack ram air inlet flap closure during take-off and
landing phases.
BSCU
UG913131 - U7PT0M0 - UM21F1000000002
T1+T2 (CFM 56) (Lvl 2&3) ZONE TEMPERATURE CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 69
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F1000000002
T1+T2 (CFM 56) (Lvl 2&3) ZONE TEMPERATURE CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 70
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) ZONE TEMPERATURE CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 71
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) EMERGENCY RAM AIR INLET D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 72
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D4000000001
T1+T2 (CFM 56) (Lvl 2&3) EMERGENCY RAM AIR INLET D/O (3) Apr 03, 2013
21 - AIR CONDITIONING Page 73
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 74
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P3000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 75
Single Aisle TECHNICAL TRAINING MANUAL
OUTFLOW VALVE outflow valves automatically if the outflow valve is not in the fully open
position when the aircraft is on ground. This is to prevent any door violent
In automatic mode, the outflow valve is controlled by the operating opening in case of residual cabin pressure.
controller. The outflow valve is of the double flap and motor driven type. The control of the Outflow Valve (OFV) by the Residual Pressure Control
In automatic operation, the outflow valve is operated by electronics System (RPCU) is done through the MOT 3, when the following situation
module 1 or module 2 depending on the operating controller: is detected:
- electronics module 1 is controlled by controller 1, controller 1 plus - both main landing gears are compressed, or one main landing gear is
motor 1 are linked to system 1, compressed and the Parking Brake is set to ON, and
- electronics module 2 is controlled by controller 2, controller 2 plus - both Master Switches are in OFF or speed is below 100 knots
motor 2 are linked to system 2. AND
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 76
Single Aisle TECHNICAL TRAINING MANUAL
- outflow valve is not fully open, and
- cabin pressurization system is in manual mode or both CPCs are
inoperative.
In these cases, the OFV is driven to the fully open position by the RPCU.
UG913131 - U7PT0M0 - UM21P3000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 77
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P3000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 78
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 79
Single Aisle TECHNICAL TRAINING MANUAL
control.
These signals are: AIR COND PANEL AND CABIN PRESS PANEL
- Static pressure,
- BARO (barometric) correction, The position of the pressure panel switches and emergency RAM AIR
- ADIRU validity, used for all sequences and priority selection. switch is transmitted to both controllers.
ADIRU 1, 2, 3 sends signals to controller 1 and ADIRU 2, 1, 3 sends The CABIN PRESSurization panel signals are:
signals to controller 2. - ditching,
- landing field elevation selection,
FMGC - manual mode selection, used for manual operation.
The AIR CONDitioning panel signal is the emergency ram air inlet
Each Flight Management and Guidance Computer (FMGC) sends cruise
selection, used for outflow valve half opening.
flight level and landing field elevation data to both controllers.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 80
Single Aisle TECHNICAL TRAINING MANUAL
PRESS PANEL/MOTOR 3
Motor 3 is controlled by a discrete signal directly sent by the CABIN
PRESS panel. This signal is used for manual mode.
UG913131 - U7PT0M0 - UM21F2000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 81
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F2000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 82
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 83
Single Aisle TECHNICAL TRAINING MANUAL
These inputs determine if the RPCU needs to control the OFV to the fully
open position. Therefore the RPCU sends a direct signal to MOTOR 3
to open the OFV.
The RPCU sends a discrete signal to the CFDIU for fault information
(ok or not ok), which leads to a class 3 fault indication.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 84
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F2000000001
RPCU INTERFACES
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 85
Single Aisle TECHNICAL TRAINING MANUAL
or landing fields.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 86
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F2000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROL INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 87
Single Aisle TECHNICAL TRAINING MANUAL
Both controllers send ARINC and discrete signals to the System Data
Acquisition Concentrator (SDAC). When the system is in automatic
mode, ARINC and discrete signals are used for monitoring and warning
indications. In manual mode, 3 analog signals are provided from the
manual part of CPC1 only.
CFDIU
Both controllers send BITE data to the Centralized Fault Display Interface
Unit (CFDIU) via ARINC buses. This data is sent continuously or on
request. The signal is a BITE data, used for Centralized Fault Display
System (CFDS) monitoring.
CIDS
UG913131 - U7PT0M0 - UM21F3000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM MONITORING INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 88
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F3000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM MONITORING INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 89
Single Aisle TECHNICAL TRAINING MANUAL
CARGO
The FWD and aft cargo compartments are ventilated by cabin ambient
air coming from the cabin zones through openings in the cabin floor
behind the sidewall panels. The FWD cargo compartment is ventilated
UG913131 - U7PT0M0 - UM21P4000000001
CONTrollers
The Avionics Equipment Ventilation Computer (AEVC) ensures control
and monitoring of the AVNCS ventilation system. The cargo ventilation
controller (CONT) controls and monitors the isolation valves and the
extraction fan of the cargo ventilation system.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESIGN PRESENTATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 90
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P4000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESIGN PRESENTATION (2) Apr 03, 2013
21 - AIR CONDITIONING Page 91
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 92
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D5000000001
GENERAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 93
Single Aisle TECHNICAL TRAINING MANUAL
NOTE: The skin air inlet and outlet valves are fully open.
UG913131 - U7PT0M0 - UM21D5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 94
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 95
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 96
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 97
Single Aisle TECHNICAL TRAINING MANUAL
NOTE: The skin air outlet valve is an electrically operated single flap
valve with a smaller flap built into it. This smaller flap is opened
in flight or on ground with takeoff power selected, when the
skin temperature is above 35°C (95,0°F). It returns to the closed
position when the skin temperature decreases below 31°C
(87,8°F).
UG913131 - U7PT0M0 - UM21D5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 98
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21D5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM DESCRIPTION AND OPERATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 99
Single Aisle TECHNICAL TRAINING MANUAL
CFDIU
The AEVC sends BITE data to the Centralized Fault Display Interface
Unit (CFDIU) via an ARINC bus. Test of the system is done by sending
a test demand discrete signal to the AEVC. The signals BITE data via an
ARINC bus and the MCDU test demand via a discrete are used for
avionics equipment ventilation system monitoring.
CONTROLLER AEVC/SDAC
The AEVC monitors the skin air valves position, the conditioned air inlet
valve and the exchanger inlet bypass valve position. In case of valve
UG913131 - U7PT0M0 - UM21F4000000001
position disagree or loss of power supply of the AEVC, the AEVC sends
an avionics system fault signal to both SDACs. The avionics system fault
signal is used for valve position disagree warning on ground or loss of
power supply of the AEVC.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 100
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F4000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 101
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 102
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F4000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 103
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 104
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F4000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 105
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 106
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21F4000000001
SMOKE DETECTOR
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM INTERFACES (3) Apr 03, 2013
21 - AIR CONDITIONING Page 107
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 108
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P5000000001
SYSTEM INTRODUCTION
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 109
Single Aisle TECHNICAL TRAINING MANUAL
TEMPERATURE SELECTOR
The temperature rotary selector gives the desired temperature to the
heating controller, which controls the trim air valve to add hot air to cabin
ambient air, if necessary. The selector temperature range is between 5ºC
(41ºF) and 26ºC (79ºF), with 16ºC (60ºF) at the 12 o'clock position.
CARGO SMOKE
In case of cargo smoke detected, the cargo ventilation controller will
automatically close the related isolation valves.
For each heated compartment, the temperature selectors signal the
associated Cargo Heating Controller to move the trim air valves to adjust
the temperature of the air entering the compartment.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 110
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P5000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 111
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 112
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P6000000001
SYSTEM INTRODUCTION
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 113
Single Aisle TECHNICAL TRAINING MANUAL
TEMPERATURE SELECTOR
The temperature rotary selector gives the desired temperature to the
heating controller, which controls the trim air valve to add hot air to cabin
ambient air, if necessary. The selector temperature range is between 5°C
(41°F) and 26°C (79°F) with 16°C (60°F) at the 12 o'clock position.
CARGO SMOKE
In case of cargo smoke detected, the cargo ventilation controller will
automatically close the related isolation valves.
For each heated compartment, the temperature selectors signal the
associated Cargo Heating Controller to move the trim air valves to adjust
the temperature of the air entering the compartment.
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 114
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21P6000000001
T1+T2 (CFM 56) (Lvl 2&3) SYSTEM CONTROLS PRESENTATION (3) Apr 03, 2013
21 - AIR CONDITIONING Page 115
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 116
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21BA000000002
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 117
Single Aisle TECHNICAL TRAINING MANUAL
Valve and move the manual override handle to the OPEN position,
- perform AEVC BITE.
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 118
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21BA000000002
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 119
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 120
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21BA000000002
MEL/DEACTIVATION - AVIONICS VENTILATION SKIN AIR INLET VALVE & AVIONICS VENTILATION CONDITIONED AIR INLET
VALVE
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 121
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 122
Single Aisle TECHNICAL TRAINING MANUAL
UG913131 - U7PT0M0 - UM21BA000000002
MAINTENANCE TIPS
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM LINE MAINTENANCE (2) Apr 03, 2013
21 - AIR CONDITIONING Page 123
Single Aisle TECHNICAL TRAINING MANUAL
PACK 1 OVERHEAT
VENTILATION SUB-SYSTEMS
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM OPERATION, CONTROL & Apr 03, 2013
21 - AIR CONDITIONING INDICATING (3) Page 124
Single Aisle TECHNICAL TRAINING MANUAL
T1+T2 (CFM 56) (Lvl 2&3) AIR CONDITIONING SYSTEM OPERATION, CONTROL & Apr 03, 2013
21 - AIR CONDITIONING INDICATING (3) Page 125
AIRBUS S.A.S.
31707 BLAGNAC cedex, FRANCE
STM
REFERENCE UG913131
APRIL 2013
PRINTED IN FRANCE
AIRBUS S.A.S. 2013
ALL RIGHTS RESERVED
AN EADS COMPANY