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DUCT TEMPERATURE SENSORS
Each duct temperature sensor detects duct temperature
for the corresponding zone temperature control,
indication and overheat detection to the zone
controller.
Each duct temperature sensor consists of two
thermistors, one connected to the primary computer and
the other to the secondary computer.
Each thermistor provides control, indication and
overheat detection (88°C (190°F) or 4 x 80°C (176°F)).
ZONE TEMPERATURE SENSORS
Each zone sensor detects corresponding zone
temperature for zone temperature control and
indication on ECAM display.
Each zone temperature sensor consists of two
thermistors, one connected to the primary computer and
the other to the secondary computer.
TMUTEMG09-T01 LEVEL 3
EFFECTIVITY 21-60-00 Page 4
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 58
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SELF EXAMINATION
If a duct overheat is detected:
A - The mixer unit flap closes.
B - The PRV and the TAVs close.
C - The PRV and the corresponding TAV close.
The mixer unit flap opens if:
A - HOT AIR pb is set to OFF.
B - PACK 2 pb is set to OFF.
C - PACK 1 pb is set to OFF.
TMUTEMG09 LEVEL 3
EFFECTIVITY 21-60-00 Page 5
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 59
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THIS PAGE INTENTIONALLY LEFT BLANK
TMUTEMG09 LEVEL 3
EFFECTIVITY 21-60-00 Page 6
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 60
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21 - AIR CONDITIONING
21-60-00 ZONE TEMPERATURE CONTROL -
ZONE AND PACK CONTROLLER
INTERFACES
CONTENTS:
General
System Data Acquisition Concentrator (SDAC)
Engine Interface Unit (EIU)
Air Data Inertial Reference Unit 1 (ADIRU 1)
Electronic Control Box (ECB)
Data Management Unit (DMU)
Centralized Fault Display Interface Unit (CFDIU)
Zone And Pack Controllers
Fans Parameters
Anti-ice And Pneumatic Parameters
Landing Gear Control Interface Unit 2 (LGCIU 2)
Braking And Steering Control Unit (BSCU)
Self Examination
TMUTEMI09 LEVEL 3
EFFECTIVITY 21-60-00 Page 1
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 61
ALL
ZONE TEMPERATURE CONTROL - ZONE AND PACK CONTROLLER INTERFACES
GENERAL
Zone controller: crosstalk via internal bus.
Pack controller: crosstalk via RS232 connection.
SYSTEM DATA ACQUISITION CONCENTRATOR (SDAC)
System data information is transmitted to the System
Data Acquisition Concentrator via ARINC buses for
system monitoring.
Signal: System data information (Temperature, valve
position ...), used for warning and display.
ENGINE INTERFACE UNIT (EIU)
The zone controller provides data to both Engine
Interface Units. Each EIU provides one discrete to the
zone controller and one discrete to the corresponding
pack controller.
EIU 1,2 to Pack Controller:
- Signal: take-off thrust, used for pack RAM air
inlet closure
EIU 1,2 to Zone Controller:
- Signal: HP fuel valve position, used for bleed
demand calculation.
Zone Controller to Engine Interface Unit 1, 2:
- signal: increase engine power, used for bleed
air flow increase.
- signal: bleed and anti-ice status, used for
thrust limit calculation.
AIR DATA INERTIAL REFERENCE UNIT 1 (ADIRU 1)
The Air Data Inertial Reference Unit 1 sends data to
the zone controller for zone and pack temperature
control.
Signal: aircraft altitude, used for zone temperature
compensation and pack water extractor outlet
temperature limitation.
ELECTRONIC CONTROL BOX (ECB)
The zone controller sends data to the Electronic
Control Box and receives an APU bleed valve open
discrete.
Zone controller to ECB:
- Signal: increase APU flow, used for increased
bleed air flow.
ECB to zone controller:
- Signal: APU bleed valve open, used for flow
demand calculation.
DATA MANAGEMENT UNIT (DMU)
The zone and pack controllers send system main status
data to the Data Management Unit for maintenance
monitoring purposes.
Zone controller to DMU:
- TAPRV position
Pack controllers to DMU:
- pack flow, water extractor and pack
compressor discharge temperatures, bypass
　
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