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2

2 x ozone converters, 2 x Flow Sensing Venturis (FSV), 2 Flow Control Valves and 1 Full Digital AGU Controllers (FDAC)

LRU Venturi duct, absolute px sensor, delta px sensor and temperature sensor, FSV is an LRU

Actual flow calculation, delta P also used for AGU heat exchanger clog detection

Each FDAC compares actual flow to flow demand (from AGS APP) in order to control its FCV torque motor

Proximity switch on each FCV will send fully closed/not fully closed posn to the FDAC

Two fully redundant digital channels (active and standby), fitted in un px wing root area (AGU bay)

4 (2x INBD) (2x OUTBD) OUTBD have chk valves

INBD

At rear of FWD cargo hold, lowest selected zone temp

L.H AGU input from FCV 1 + 2, R/H AGU input from FCV 3 + 4 “Each FCV controls half the total flow of 1 AGU”

Hot air from upstream of the AGU

2 of each

4 HP recirc fans

ERAI (Emergency Ram Air Inlet)

Pack 1 CTL (L/H AGU) will reset FDAC 1, and the AGS APP in CPIOM B 1 and 3 Pack 2 CTL (R/H AGU) will reset FDAC 2, and the AGS APP in CPIOM B 2 and 4

Ventilation and Control Modules, 1 in FWD cargo and 1 in AFT cargo

Fire P/B, Pack P/B and VCM command

VCMs monitors the MORV (Mixer Over Px Relief Valve) on mixer bay and will command closure if mixer over px occurs

If engines are supplying DSMCU will send door unlocked signal to FDAC which will close FCV to prevent aircraft pressurisation

Safe mode operation

AGS, AVS, CPCS, TCS and VCS

Will give purser complete control over individual zone temps via FAP (FLT crew select A/C as 1 zone, single cabin target to TCS)

1 ram air inlet, 2 ram air outlets

1 Per door, 2 x 280VDC brushless 3 phase motors, 28VDC brake which engages on removal of power and an RVDT for feedback (FDAC)

1 Per door, 1 x 280VDC brushless 3 phase motor, 28VDC brake which engages on removal of power and an RVDT for feedback (FDAC)

2 x Dual heat exchangers per AGU

4 per ACM, 2x turbine, 1x compressor and 1x fan

Suck in ram air when on GND

To prevent build up of frost and snow

Control AGU outlet temp in conjunction with ram air modulation, by mixing pri heat ex air with 2nd stage turbine discharge (ACM), 2 per AGU

Controls the condensing temperature above freezing point (2.2degrees) to prevent icing in the condenser by bypassing first stage turbines, 2 per AGU (abnormal ops as norm by condenser inlet temp sensor)

Gives increased ventilation flow at altitudes > 29000ft by bypassing 1st stage turbines (1 per AGU)

Abnormal ops, commands ACM off if system failure occurs, 1 per AGU

ACM discharge temp (AGU outlet)

Primary heat exchanger

Emergency Ram Air Inlet, ventilation function in case of loss of both AGUs

2 x scoops under belly, 1 actuator per scoop that will extend to close scoop, conn into LP gnd air, 4 internal limit switches installed in pairs at each end of actuator travel

VCM FWD will under VCS APP authority auto opens ERAIs if 2 AGUs off and open signal enabled by CPCS APP (overcome chk valve to enter mixer)

ERAIs commanded to closed position and open signal will be inhibited, highest priority to close scoops

16, 1 flt deck and 15 cabin

2, L and R

FCV 2 and 3 norm supply, 1 and 4 can supply in abnormal conditions

Trim Air Pressure Regulating Valve (torque motor ctl) x2 installed in AGU bay area, shut off and px regulating functions

Trim Air Shut Off Valve. X2 installed in mixer unit area, splits air between L/H and R/H systems, normally closed

Trim Air Valve, 1 per zone installed in mixer bay area, has prox switch for fully open

1 x servicable TAV, 1 x duct temp sensor and 1 x zone temp sensor

Associated TAPRV and TAVs

Quadrant is inbetween TASOV (x2) and TACKV (x4) (Trim air Check Valve)

Cabin sensors via CAXS, FLT deck via avionic cooling system, located RHS cabin

Trim Air Drive Device installed at rear part of L/H FWD cargo triangle, drives valves based on commands

2 x fully redundant channels

TCS APP in CPIOM-Bs (>AGS>FDAC>TCV) TADD does not receive

Some to CIDS and some to CPIOM-Bs

TCS 1, TADD channel 1 and TCS APP in CPIOM – B1 and B3 TCS 2, TADD channel 2 and TCS APP in CPIOM – B2 and B4

ECAM COND page will show lowest and hottest cabin zone temp range (uppr and lwr)

X 4 SMART fans (S/W loadable) will send air to mixer unit only, installed mixer area

Supply a co-annular flow of re-circ air and AGU air to prevent ice build up into mixer

Lower deck area

Measure average air Px of mixer unit, mixer unit pressure control through HP recirc fan speed command

Used to re-circ upper deck air into riser ducts for upper and main deck supply

X9 fans (1opt), 4 have mufflers fitted (page 70)

Sidewalls of upper deck

Between upper deck and main deck, each side of fuse

VCS APPs will control, VCM will monitor

VCS 1, CH 1 of FWD and AFT VCM, VCS APP in CPIOM – B1 and B2 VCS 2, CH 2 of FWD and AFT VCM, VCS APP in CPIOM – B3 and B4

Each (4) CPIOM – B VCS APP can control each HP fan L/H LP fans via B1 and B3 R/H LP fans via B2 and B4

VCM.s take control, and will operate to a default speed VCM FWD will do all L/H fans VCM AFT will do all R/H fans

At least 1 fan overheat condition

VCS 1 + 2 R/Bs

VCS and AGS, to allow control of Px into mixer (fan speed)

2 x CAX fans, FWD and AFT, lav/galley etc ventilation, active if aircraft power supplied, VCS APP control, VCM monitored, no selections from flight deck (will suck air out of Aft avionics) also SPDBs

Isol valves open so over board (less than fan extracts to OFV area)

2 things, if 1 CAX fan failed or SMOKE condition and cabin air extract P/B selected

Over Px Relief Valve Dump, 2 installed rear pressure bulkhead

Over pressure relief (max diff protection) mech ops, sprung closed Emergency ventilation, solenoid will open

VCM AFT

X 4 outflow valves, 2 FWD, 2 AFT

Differential Pressure Sensor Module, back up system, calculates diff px between ext and cabin

Negative relief valves, 2 fitted at aft Px bulkhead, open if external px overcomes springs and cab px

X 4 OC(S)Ms, 2 in FWD cargo, ctl 2 FWD outflow, 2 in AFT ctl 2 AFT outflow

OCSM has high precision pressure sensor used for ACP (pax comfort)

ACP (Auto Control Partition), SOP (Safety and Overide Partition) and EPP (Emergency Pressurisation Partition)

OSCM 2

CPCS CMD to ACP, ACP passes to SOP which checks and sends to EPP which carries out structural integrity check and will send CMD to motor if happy

Crew make V/S or ALT selection (ALT has priority), this goes to SOP which passes to EPP for integrity check, CMD sent to motor

CPCS 1, CPCS APPs in CPIOM – B1 and B3, OSCMs 1 and 3 CPCS 2, CPCS APPs in CPIOM – B2 and B4, OSCMs 2 and 4

Upper and lower FCRC supplied from mixer unit air, two elec heaters, 2 (EHC) elec heater controllers, 2 x mini FAP (own recirc air)

Can bus

Via the mini FAP in upper and lower

Starts >26000ft/ >23deg, stops 2 hours prior to TOD, potable water (If heater off by FAP humidification off also)

No elec heaters, has a TAV, duct temp sensor and compartment temp sensor

VCS APP via the AFT VCM

Bulk cargo ventilation duct (extraction sys)

TCS and VCS (CPIOM – B)

Cold air valve (mixer supply to), 3 x supply isolation valves, 2 x TAVs and 1 x extraction isol valve (L/H to R/H side air flow, dumped next to 2 x fwd outflow valve)

VCS APP, valve has 3 posns (TCS to VCS from flight deck selection)

Yes 1

No TAV, has elec duct heater with 2 separate elements

LP manifold air

VCM aft and VCS APP

None, cannot add cold air

AVS APPs in CPIOM B3 and B4

2 x (SMART) blower fans, 1 x extract fan and 1 x IFE blower fan (run when power on)

Overboard Fully open, inboard valve closed

1 inboard engine running, overboard valve closed, inboard valve open, to OFV 1 area

Select P/B AVNCS EXTRACT to override, inboard valve closes, small door in overboard valve opens to use diff px for extraction

L/H and R/H back up valves can supply mixer unit air to failed side/s

Light on LHS NLG and horn sounds, heated sensors that are cooled by AVS air

None, would be a PFR pending item though

Overboard via venturis

AVS 1, CPIOM B3 AVS APP AVS 2, CPIOM B4 AVS APP

Port by OFV 2 FWD used (DIFF)

VCS APP and VCM FWD

Main back ups have priority, if 1 or both mains in use, IFE back up valve cannot be used, crew will select off

Belly fairing and lower wing (AGU bay/CTR wing box/HP gnd conn ducts/X BLD ducts) Rear fuse compartment (APU compt/APU bleed duct)

TSV (Turbofan Supply Valve), a turbo fan, 2 check valves and an air inlet

TSV allows air from pneumatic sys to related turbofan

15000ft TSV solenoid closes valve

If turbo fan does not switch off at 15000ft, an aneroid capsule will switch fan off at 25000ft

AGS APP and FDACs

Electric fan, power on at >9degs, off at take off plus 150 secs

VCM aft and VCS APP

4, Generation, Distribution, Consumption and Control

2 x SCSC (Supplementary Cooling System Controller) in belly area

Central Refrigeration Unit, Generation, 2 off controlled by SCSC

1 x compressor (cooling control) 1 x heat exch (CONDensor and EVAPorator) 1 x EEV (Elec Expansion Valve) Sensors Ram air inlet/outlet

Quickly decreases Px of liquid refrigerant – flash evaporation

2 x fans (Elec) per CRU

RACA door

Galden

2 totally independent loops, L/H and R/H

Each loop will go through both CRUs, to retain some cooling if failure

Dual pump assy, Filter, Accumulator, monitor and prot devices, piping, SOVs and GSP

Each SCSC supplies elec power to 1 pump in each loop and controls on alternate days with the other SCSC

Inlet Px at the pump is sufficient

2 in each loop! L/H SOV 1, L/H SOV 2 R/H SOV 1, R/H SOV 2

Release coolant to ambient if over Px occurs, 2 of each

They are cooled via a pick up from there related loop

Liquid to air heat exch, fan, local ctl unit,CCV, sensors and drain

3

Coolant Control Valve, adjusts coolant flow rate to the heat exch

Fault light in COOLG P/B on vent panel on, can then make off selection at P/B

Auto, allows control via FAP

SCS

All 4 CPIOM – As contain SCS ops and Bite

Shutdown ACUs

CIDs

SCS 1, SCSC 1 and SCS in CPIOM A1, A3 SCS 2, SCSC 2 and SCS in CPIOM A2, A4