A320 CH 21

1. PACK OUTPUT GOES TO MIXER UNIT WHICH MIX ED BY AIR FLOW FROM CABIN BY 2 RECIRCULATION FAN TO REDUCE  DEMAND ANF SAVING FUEL
2. AIR FROM MIXER GOES TO COCKPIT, FWD CABIN, AFT CABIN VIA TAV’S
3. MIX UNIT  & 2 FANS ARE IN FWD CARGO AFT WALL
4. EACH ZONE HAVE TAV TO ADJUST TEMP
5. FCV (FLOW CONT VLV) CONTROLS THE BLEED PRESS TO PACKS
6. 2 ACSC (AIR COND SYS CONT) CONTROL THE PACKS OUTPUT BY CONTROLLING BYPASS VLV & RAM AIR INLET
7. RAI (RAM AIR INLET) MUST FULLY OPEN AND BV ( BYPASS VLV) FULLY CLOSE FOR MAX COOL
8. IN T/O & LAND RAI IS FULLY CLOSE BUT IN MAX HOT IS NEARLY CLOSE
9. ACSC IN CLASSIC VERSION REPLACED BY PC (PACK CONT ) & ZC (ZONE CONT)
10. ZC CONTROLS THE HAV (HOT AIR VLV) & TAV
11. ZONE TEMP AND CAB PRESS PARAMETER  SHOWN IN ECAM AIR COND PAGE & CRUISE PAGE
12. 2 CPC CONTROL ONE OFV (OUT FLOW VLV)
13. OFV HAS 3 MOTOR : ONE FOR EACH CPC AND ONE CONNECTED TO V/S SW FOR MAN
14. CPC SEND SIG TO ADIRU AND FMGC FOR PRESS/DEPRESS SCADULE
15. TAPRV OR HOT AIR VLV HAS 2 SOLENOID
16. BLOWER & EXT FAN POWERED WHEN A/C POWERED
17. AEVC (AVIONICS EQUIP VENT COMPUTER) CONTROLS FAN & 2 SKIN VLV
18. R/H SKIN VLV IS OVERBOARD VLV & L/H ONE IS INLET BYPASS
19. BOTH SKIN VLV CLOSED IN FLT AND GND IF TEMP IS LOW AND IN GND ARE OPEN IN NORMAL TEMP
20. IN SMOKE INLET V CLOSE AND OUTLET PARTIALLY CLOSED
21. GALLY AND LAV AUTO VENT
22. AIR DROWN TO CARGO BY EXT FAN IN GND AND DIFF PRESS IN FLT
23. CHC (CARGO HEAT CONT) CONTROLS TAV OF CARGO
24. FWD CARGO  EXT FAN AND OUTLET VLV ARE IN R/H WALL , INLETS  IN BOTH CARGO ARE  L/H
25. AFT CARGO EXT FAN AND OUTLET IN AFT WALL
26. 2 SAFTEY VLV ARE IN AFT WALL OF BULKHEAD