COCKPIT AND CABIN TEMPERATURE CONTROL - DESCRIPTION AND OPERATION

** ON A/C NOT FOR ALL

1. General
The cockpit and cabin temperature control system controls the temperature in the cockpit and cabin. You can set a different temperature for the cockpit and the cabin. The cabin is divided into the FWD zone and the AFT zone.
Hot trim air, which is used for temperature control in the cockpit, the FWD cabin and the AFT cabin zones, is individually controlled under normal conditions in pressure and quantity. A back-up is provided and will take over control in a failure condition.
The cockpit and cabin temperature control system controls the temperature in the cockpit and cabin. You can set a different temperature for the cockpit and the cabin. The cabin is divided into the FWD zone and the AFT zone.
The hot trim air is used for individual temperature control in the cockpit, the FWD cabin and the AFT cabin zones.

** ON A/C NOT FOR ALL

2. Component Location

Cockpit and Cabin Temperature Control - Component Location ** ON A/C NOT FOR ALL

FIN	FUNCTIONAL DESIGNATION	PANEL	ZONE	ATA REF
** ON A/C NOT FOR ALL
11HK	TRIM VALVE CKPT	131PW	137	21-63-51
** ON A/C NOT FOR ALL
11HK	TRIM VALVE CKPT		137	21-63-51
** ON A/C NOT FOR ALL
12HK	TRIM VALVE FWD CAB	131PW	137	21-63-51
** ON A/C NOT FOR ALL
12HK	TRIM VALVE FWD CAB		137	21-63-51
** ON A/C NOT FOR ALL
13HK	TRIM VALVE AFT CAB	131PW	138	21-63-51
** ON A/C NOT FOR ALL
13HK	TRIM VALVE AFT CAB		138	21-63-51
** ON A/C NOT FOR ALL
14HK	TRIM AIR PRESS VALVE	131PW	137	21-63-52
** ON A/C NOT FOR ALL
14HK	TRIM AIR PRESS VALVE		137	21-63-52
** ON A/C NOT FOR ALL
15HK	TEMP SENSOR CKPT DUCT	131PW	137	21-63-15
** ON A/C NOT FOR ALL
15HK	TEMP SENSOR CKPT DUCT		137	21-63-15
** ON A/C NOT FOR ALL
16HK	TEMP SENSOR FWD CAB DUCT	131PW	137	21-63-15
** ON A/C NOT FOR ALL
16HK	TEMP SENSOR FWD CAB DUCT		137	21-63-15
** ON A/C NOT FOR ALL
17HK	TEMP SENSOR AFT CAB DUCT	131PW	137	21-63-15
** ON A/C NOT FOR ALL
17HK	TEMP SENSOR AFT CAB DUCT		137	21-63-15
** ON A/C ALL
18HM	P1 CHECK VALVE TRIM AIR		140	21-63-42
19HM	P2 CHECK VALVE TRIM AIR		140	21-63-42
** ON A/C NOT FOR ALL
21HK	SENSOR-TEMPERATURE, COCKPIT		210	21-63-17
** ON A/C NOT FOR ALL
21HK	TEMP SENSOR CKPT		210	21-63-17
** ON A/C ALL
22HK	TEMP SENSOR FWD CAB	231DC	232	21-63-17
** ON A/C NOT FOR ALL
23HK	TEMP SENSOR AFT CAB	251CC	252	21-63-17
** ON A/C NOT FOR ALL
23HK	TEMP SENSOR AFT CAB		252	21-63-17
** ON A/C NOT FOR ALL
24HK	TEMP SENSOR LH MIXER	131NW	137	21-63-16
** ON A/C NOT FOR ALL
24HK	TEMP SENSOR LH MIXER		138	21-63-16
** ON A/C NOT FOR ALL
25HK	TEMP SENSOR RH MIXER	131NW	138	21-63-16
** ON A/C NOT FOR ALL
25HK	TEMP SENSOR RH MIXER	131NW	137	21-63-16
** ON A/C NOT FOR ALL
25HK	TEMP SENSOR RH MIXER		137	21-63-16
** ON A/C ALL
26HK	TRIM AIR PRESS SWITCH	131NW	137	21-63-19
27HK	CKPT TEMP SELECTOR	30VU	210	21-63-11
28HK	FWD CAB TEMP SELECTOR	30VU	210	21-63-11
29HK	AFT CAB TEMP SELECTOR	30VU	210	21-63-11

** ON A/C NOT FOR ALL

3. System Description

Cockpit and Cabin Temperature Control - Block Diagram

A. Controller
The zone controller 8HK controls the temperature of the cockpit, fwd cabin and aft cabin zones. This controller contains two channels, a primary and a secondary. The primary channel gives full control of all of the system parameters. The secondary channel gives a reduced level of control when used as a back-up to the primary channel, (in the event of primary channel failure).
The air conditioning system controller 1 (ACSC 1) controls the temperature of the cockpit, the ACSC 2 controls the temperature of the forward cabin and aft cabin zones. These controllers have two lanes. In the event of a failure in a lane, the other lane takes over full control.

(1) Trim Air from the Air Conditioning Packs
Hot trim air is taken from the bleed air supply to the air conditioning packs 10HM and 11HM downstream of the flow control valves 8HB and 11HB. It flows through the trim-air check valves 18HM and 19HM to the trim-air pressure regulating valve 14HK and to the hot-air pressure switch 26HK. It then flows to the independently controlled trim air valves 11HK for the cockpit, 12HK for the FWD cabin and 13HK for the AFT cabin. It is mixed with cooled conditioned air from the mixer unit and flows to the cabin. It also flows to the cockpit through a restrictor.

(2) Trim Air from the Air Conditioning Packs
Hot trim air is taken from the bleed air supply to the air conditioning packs 10HM and 11HM downstream of the flow control valves 8HB and 11HB. It flows through the trim-air pressure regulating valve 14HK to the trim-air check valves 18HM and 19HM and to the hot-air pressure switch 26HK.
It then flows to the independently controlled trim air valves 11HK for the cockpit, 12HK for the FWD cabin and 13HK for the AFT cabin. It is mixed with cooled conditioned air from the mixer unit and flows to the cabin. It also flows to the cockpit through a restrictor.

(3) Trim Air from the Air Conditioning Packs
Hot trim air is taken from the bleed air supply to the air conditioning packs 10HM and 11HM downstream of the flow control units 23HB and 24HB. It flows through the trim-air pressure regulating valve 14HK to the trim-air check valves 18HM and 19HM and to the hot-air pressure switch 26HK.
It then flows to the independently controlled trim air valves 11HK for the cockpit, 12HK for the FWD cabin and 13HK for the AFT cabin. It is mixed with cooled conditioned air from the mixer unit and flows to the cabin and the cockpit.

(4) Trim Air from the Air Conditioning Packs
Hot trim air is taken from the bleed air supply to the air conditioning packs 10HM and 11HM downstream of the flow control units 23HB and 24HB. It flows through the trim-air pressure regulating valve 14HK to the trim-air check valves 18HM and 19HM and to the hot-air pressure switch 26HK.
It then flows to the independently controlled trim air valves 11HK for the cockpit, 12HK for the FWD cabin and 13HK for the AFT cabin. It is mixed with cooled conditioned air from the mixer unit and flows to the cabin. It also flows to the cockpit through a restrictor.
From the trim-air pressure regulating valve 14HK the air also flows to the FWD cargo-compartment heating-system (Ref. AMM D/O 21-43-00-00).

(5) Trim Air Valves
The trim air valves 11HK, 12HK and 13HK add an adjustable quantity of hot trim air to the cooled conditioned air from the mixer unit. The zone temperature controller 8HK controls the position of the trim air valves. The trim air valves are installed in the respective hot trim-air ducts to the cockpit and the two cabin areas.

(6) Trim Air Valves
The trim air valves 11HK, 12HK and 13HK add an adjustable quantity of hot trim air to the cooled conditioned air from the mixer unit. The air conditioning system controller 47HH (57HH) controls the position of the trim air valves. The trim air valves are installed near the mixer unit in the respective hot trim-air ducts to the cockpit and the two cabin areas.

(7) Trim-Air Pressure Regulating Valve
The trim-air pressure regulating valve 14HK keeps the pressure in the trim air supplies to 0.280 bar (4.0611 psi) above the cabin pressure. It is installed downstream of the trim-air check valves 18HM (19HM). In normal operation it operates pneumatically. You can use the trim-air pressure regulating valve to shut off the trim air supply.
The trim-air pressure regulating valve closes automatically, if:

the duct overheats, or
the cockpit trim air valve and one cabin trim air valve fail, or
both cabin trim air valves fail.

(8) Trim-Air Pressure Regulating Valve
The trim-air pressure regulating valve (TAPRV) 14HK keeps the pressure in the trim air supplies to 0.280 bar (4.0611 psi) above the cabin pressure. It is monitored by the ACSC 1.
The TAPRV is installed downstream of the trim-air check valves 18HM (19HM). In normal operation it operates pneumatically. You can use the trim-air pressure regulating valve to shut off the trim air supply.
The trim-air pressure regulating valve closes automatically, if:

the duct overheats, or
the cockpit trim air valve and one cabin trim air valve fail, or
both cabin trim air valves fail.

(9) Temperature Sensors
Temperature sensors send temperature data to the zone temperature controller 8HK:

the temperature sensor 24HK (for cockpit) is installed in the mixer unit,
the temperature sensor 25HK (for cabin) is installed in the mixer unit,
the temperature sensor 15HK is installed in the duct to the cockpit,
the temperature sensor 16HK is installed in the duct to the FWD cabin,
the temperature sensor 17HK is installed in the duct to the AFT cabin,
the temperature sensor 21HK is installed in the cockpit,
the temperature sensor 22HK is installed in the FWD zone of the cabin,
the temperature sensor 23HK is installed in the AFT zone of the cabin.

(10) Temperature Sensors
Temperature sensors send temperature data to the appropriate ACSC 47HH (57HH):

the temperature sensor 24HK (for cockpit) is installed in the mixer unit,
the temperature sensor 25HK (for cabin) is installed in the mixer unit,
the temperature sensor 15HK is installed in the duct to the cockpit,
the temperature sensor 16HK is installed in the duct to the FWD cabin,
the temperature sensor 17HK is installed in the duct to the AFT cabin,
the temperature sensor 21HK is installed in the cockpit,
the temperature sensor 22HK is installed in the FWD zone of the cabin,
the temperature sensor 23HK is installed in the AFT zone of the cabin.

(11) Temperature Selectors
With the temperature selector 27HK you can set the required air temperature in the cockpit.
The temperature selector 28HK controls the air temperature in the FWD cabin zone.
The temperature selector 29HK controls the air temperature in the AFT cabin zone.
You can set any temperature between 18 deg.C (64.40 deg.F) and 30 deg.C (86.00 deg.F). The 12 o'clock position is 24 deg.C (75.20 deg.F). The selectors send a signal to the zone controller 8HK. The selectors are installed on the panel 30VU in the cockpit.
The temperatures in the different zones appear on the COND page of the ECAM.

(12) Temperature Selectors
With the temperature selector 27HK you can set the required air temperature in the cockpit.
The temperature selector 28HK controls the air temperature in the FWD cabin zone.
The temperature selector 29HK controls the air temperature in the AFT cabin zone.
You can set any temperature between 18 deg.C (64.40 deg.F) and 30 deg.C (86.00 deg.F). The 12 o'clock position is 24 deg.C (75.20 deg.F).
The temperature selector 27HK sends a signal to the ACSC 1. The temperature selectors 28HK, 29HK send signals to the ACSC 2 for the cabin zones.
The selectors are installed on the panel 30VU in the cockpit.
The temperatures in the different zones appear on the COND page of the ECAM.

(13) Hot-Air Pressure Switch
The hot-air pressure switch 26HK closes if the pressure in the applicable trim air supply is more than 0.45 bar (6.5267 psi) above cabin pressure. The microswitch sends a signal to the zone controller 8HK. The signal continues until the hot-air pressure switch opens when the pressure decreases to 0.35 bar (5.0763 psi) above cabin pressure. It is installed downstream of the trim air pressure regulating valve 14HK.

(14) Hot-Air Pressure Switch
The hot-air pressure switch 26HK closes if the pressure in the applicable trim air supply is more than 0.45 bar (6.5267 psi) above cabin pressure. The microswitch sends a signal to the ACSC 1 47HH. The signal continues until the hot-air pressure switch opens when the pressure decreases to 0.35 bar (5.0763 psi) above cabin pressure. It is installed downstream of the trim air pressure regulating valve 14HK.

(15) Trim-Air Check Valves
The trim-air check valves 18HM (19HM) prevent reverse flow if there is a pack failure. They are installed in the trim air supplies from the packs.

** ON A/C NOT FOR ALL

4. Power Supply

Cockpit and Cabin Temperature Control - Power Supply ** ON A/C NOT FOR ALL

Cockpit and Cabin Temperature Control - Temperature Sensors ** ON A/C NOT FOR ALL

Cockpit and Cabin Temperature Control - Trim Air Valves ** ON A/C NOT FOR ALL

Cockpit and Cabin Temperature Control - Internal Interface ** ON A/C NOT FOR ALL

Cockpit and Cabin Temperature Control - Interface ** ON A/C NOT FOR ALL

Cockpit and Cabin Temperature Control - Controller Interface Signals ** ON A/C NOT FOR ALL

** ON A/C NOT FOR ALL

5. Interface

A. Explanations to the Parameter List
The parameter list is organized according to the connected ARINC 429 data buses.
The connected systems (e.g. FAC, ECU, EEC, etc.) and the corresponding ATA chapter numbers are stated in the header on the left side of each page of the parameter lists.
The columns are described as follows:

----------------------------------------------------------------

Column ! Description

---------------!------------------------------------------------

1st ! EQ.SYS.LAB.SDI = Parameternumber

SYS.LAB.SDI !

! System number: According to the system which is

! sending out the corresponding parameter:

! 1 for system one

! 2 for system two

! 3 for system three

! Label of the parameter, octal value

! according to ARINC 429.

! SDI states the Source/Destination Identifier

! which is used by the system for the

! corresponding parameter:

! 00 means SDI 00 (0)

! 01 means SDI 01 (1)

! 10 means SDI 10 (2)

! 11 means SDI 11 (3)

---------------!------------------------------------------------

2nd ! PARAMETER

PARAMETER ! Parameter name

---------------!------------------------------------------------

3rd ! RANGE

RANGE !

! Three different types of ranges are shown in

! this column:

! The first one, indicated by a 'W' (WORDRANGE),

! is related to the ARINC 429 data bus. This

! shows the maximum value of the parameter that

! can be transferred on the bus. This

! depends on the number of data bits (see

! column DATA BITS) and the resolution ('R') of

! the parameter (see column ACCURACY).

! The second one, with no specific indication,

! shows the normal operational range of the

! parameter.

! The third one is related to the ARINC 429

! Discrete Data Words. There are two states:

! 'bit status 0' or 'bit status 1'. They

! indicate the true condition of the

! corresponding data word bit position.

---------------!------------------------------------------------

4th ! ACCURACY

ACCURACY !

! Two different types of values are shown

! in this column:

! The first one, indicated by an 'R'

! (RESOLUTION) is related to the ARINC

! 429 data bus. It also shows the

! resolution of the data word. The second

! one, with no specific indication, shows

! the total accuracy of the parameter.

---------------!------------------------------------------------

5th ! SIGN BIT

SIGN BIT !

! This column shows whether a sign bit

! is available and in which bit position

! of the data word it is situated.

---------------!------------------------------------------------

6th ! DATA BITS

DATA BITS !

! Describes the number of data bits not

! including the sign bit. 'A' and a number

! means the discrete bit position in the

! ARINC 429 data word.

! For BCD coded data words the number of

! significant data digits is shown,

! indicated by '(1)'.

---------------!------------------------------------------------

7th ! UPD/sec

UPD/sec !

! This column shows how many times the

! parameter will be transmitted by the source

! system.

---------------!------------------------------------------------

8th ! CODE

CODE !

! BNR = binary data word

! BCD = binary coded decimal data word

! ISO = data word coded in ISO 5 Code

! DIS = discrete data word

! HEX = hexadecimal coded

! OCT = octal coded

! HYB = mixed code;

! e.g. : bit 11 to 16 DIS

! bit 17 to 28 BNR

---------------!------------------------------------------------

9th ! ALPHA CODING

ALPHA CODING !

! This column shows the mnemonic for the

! parameter (if available). By entering

! this code via the MCDU, the current

! parameter-value will be shown on the

! display. The value from both systems

! (if available) will be shown.

---------------!------------------------------------------------

10th ! This column shows the source origin, its

Source ! bus number, ATA Ref., and its label.

EQPT !

BUS NR !

ATA. REF !

CONV !

----------------------------------------------------------------

(Ref. AMM D/O 21-61-00-00)

B. Cockpit and Cabin Temperature Control Parameter List EQPT: 5D

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.051.10 !Discrete ! ! ! ! ! 2 !DIS ! ! !

! !data word ! ! ! ! ! ! ! ! !

!-----------------------------------------------------------------------------!

!2.060.10 !Discrete ! ! ! ! 16 ! 2 !DIS !ZDW1 ! !

! !data word ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 11! ! ! ! !

! !heat F/D ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 1 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 12! ! ! ! !

! !heat FWD ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 2 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 13! ! ! ! !

! !heat AFT ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 3 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 14! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 15! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 16! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 17! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 18! ! ! ! !

! !press high! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 19! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 20! ! ! ! !

! !press reg ! ! ! ! ! ! ! ! !

! !valve ! ! ! ! ! ! ! ! !

! !Status - ! ! ! ! ! ! ! ! !

! !close ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Main zone !bit status 1! ! !A 21! ! ! ! !

! !control ! ! ! ! ! ! ! ! !

! !inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Zone !bit status 1! ! !A 22! ! ! ! !

! !secondary ! ! ! ! ! ! ! ! !

! !control ! ! ! ! ! ! ! ! !

! !inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Hot air !bit status 1! ! !A 23! ! ! ! !

! !switch ! ! ! ! ! ! ! ! !

! !position ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !G + T fan !bit status 1! ! !A 24! ! ! ! !

! !off/fault ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Recircula-!bit status 1! ! !A 25! ! ! ! !

! !tion fan ! ! ! ! ! ! ! ! !

! !LH fault/ ! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Recircula-!bit status 1! ! !A 26! ! ! ! !

! !tion fan ! ! ! ! ! ! ! ! !

! !RH fault/ ! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !T.A.P.R.V.!bit status 1! ! !A 27! ! ! ! !

! !disagree ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 28! ! ! ! !

! !syst inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 29! ! ! ! !

!-----------------------------------------------------------------------------!

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.051.10 !Discrete ! ! ! ! ! 2 !DIS ! ! !

! !data word ! ! ! ! ! ! ! ! !

!-----------------------------------------------------------------------------!

!2.060.10 !Discrete ! ! ! ! 16 ! 2 !DIS !ZDW1 ! !

! !data word ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 11! ! ! ! !

! !heat F/D ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 1 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 12! ! ! ! !

! !heat FWD ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 2 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Duct over-!bit status 1! ! !A 13! ! ! ! !

! !heat AFT ! ! ! ! ! ! ! ! !

! !(88 Deg C)! ! ! ! ! ! ! ! !

! !Warning ! ! ! ! ! ! ! ! !

! !GR 3 ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 14! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 15! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !not used ! ! ! !A 16! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Class 2 ! ! ! !A 17! ! ! ! !

! !Fault ! ! ! ! ! ! ! ! !

! !present ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 18! ! ! ! !

! !overpress ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !ACSC1/2 ! ! ! !A 19! ! ! ! !

! !Lane 1 ! ! ! ! ! ! ! ! !

! !active ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 20! ! ! ! !

! !press reg ! ! ! ! ! ! ! ! !

! !valve ! ! ! ! ! ! ! ! !

! !Status - ! ! ! ! ! ! ! ! !

! !close ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !ACSC1/2 !bit status 1! ! !A 21! ! ! ! !

! !Lane 1 ! ! ! ! ! ! ! ! !

! !inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !ACSC1/2 !bit status 1! ! !A 22! ! ! ! !

! !Lane 2 ! ! ! ! ! ! ! ! !

! !inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Hot air !bit status 1! ! !A 23! ! ! ! !

! !switch ! ! ! ! ! ! ! ! !

! !position ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !G + T fan !bit status 1! ! !A 24! ! ! ! !

! !off/fault ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Recircula-!bit status 1! ! !A 25! ! ! ! !

! !tion fan ! ! ! ! ! ! ! ! !

! !LH fault/ ! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Recircula-!bit status 1! ! !A 26! ! ! ! !

! !tion fan ! ! ! ! ! ! ! ! !

! !RH fault/ ! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !T.A.P.R.V.!bit status 1! ! !A 27! ! ! ! !

! !disagree ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim air !bit status 1! ! !A 28! ! ! ! !

! !syst inop ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !ACSC ! ! ! !A 29! ! ! ! !

! !installed ! ! ! ! ! ! ! ! !

!-----------------------------------------------------------------------------!

C. Cockpit and Cabin Temperature Control Parameter List EQPT: 5D

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.061.10 !Discrete ! ! ! ! 10 ! 2 !DIS ! ! !

! !data word ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 11! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K1 half !bit status 1! ! !A 12! ! ! ! !

! !wing anti-! ! ! ! ! ! ! ! !

! !ice on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K2 full !bit status 1! ! !A 13! ! ! ! !

! !wing anti-! ! ! ! ! ! ! ! !

! !ice on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K3 nacelle!bit status 1! ! !A 14! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K4 air !bit status 1! ! !A 15! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !two packs ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K5 air !bit status 1! ! !A 16! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !one pack ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K6 air !bit status 1! ! !A 17! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !two packs ! ! ! ! ! ! ! ! !

! !and one ! ! ! ! ! ! ! ! !

! !engine on ! ! ! ! ! ! ! ! !

! !running ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 18! ! ! ! !

! !F/D INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 19! ! ! ! !

! !FWD cabin ! ! ! ! ! ! ! ! !

! !INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 20! ! ! ! !

! !AFT cabin ! ! ! ! ! ! ! ! !

! !INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !FWD cargo !bit status 1! ! !A 21! ! ! ! !

! !fan fault/! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !AFT cargo !bit status 1! ! !A 22! ! ! ! !

! !fan fault/! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 23! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 24! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 25! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 26! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Nacelle !bit status 1! ! !A 27! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !eng 2 open! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Nacelle !bit status 1! ! !A 28! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !eng 1 open! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 29! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.061.10 !Discrete ! ! ! ! 10 ! 2 !DIS ! ! !

! !data word ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 11! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K1 half !bit status 1! ! !A 12! ! ! ! !

! !wing anti-! ! ! ! ! ! ! ! !

! !ice on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K2 full !bit status 1! ! !A 13! ! ! ! !

! !wing anti-! ! ! ! ! ! ! ! !

! !ice on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K3 nacelle!bit status 1! ! !A 14! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K4 air !bit status 1! ! !A 15! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !two packs ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K5 air !bit status 1! ! !A 16! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !one pack ! ! ! ! ! ! ! ! !

! !on ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !K6 air !bit status 1! ! !A 17! ! ! ! !

! !cond with ! ! ! ! ! ! ! ! !

! !two packs ! ! ! ! ! ! ! ! !

! !and one ! ! ! ! ! ! ! ! !

! !engine on ! ! ! ! ! ! ! ! !

! !running ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 18! ! ! ! !

! !F/D INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 19! ! ! ! !

! !FWD cabin ! ! ! ! ! ! ! ! !

! !INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Trim valve!bit status 1! ! !A 20! ! ! ! !

! !AFT cabin ! ! ! ! ! ! ! ! !

! !INOP ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !FWD cargo !bit status 1! ! !A 21! ! ! ! !

! !fan fault/! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !AFT cargo !bit status 1! ! !A 22! ! ! ! !

! !fan fault/! ! ! ! ! ! ! ! !

! !OVHT ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Both Packs! ! ! !A 23! ! ! ! !

! !OFF ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !One Pack ! ! ! !A 24! ! ! ! !

! !Operation ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Two Pack ! ! ! !A 25! ! ! ! !

! !Operation ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Mixer Flap! ! ! !A 26! ! ! ! !

! !Status ! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Nacelle !bit status 1! ! !A 27! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !eng 2 open! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Nacelle !bit status 1! ! !A 28! ! ! ! !

! !anti-ice ! ! ! ! ! ! ! ! !

! !eng 1 open! ! ! ! ! ! ! ! !

! !----------!------------!----!----!----!----!----!-----!-------!

! !Spare ! ! ! !A 29! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

D. Cockpit and Cabin Temperature Control Parameter List EQPT: 5D

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.202.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-55 to +100 !DegC! ! ! ! ! ! !

! !Group 1 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp F/D ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.203.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-55 to +100 !DegC! ! ! ! ! ! !

! !Group 2 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp FWD ! ! ! ! ! ! ! ! !

! !Cab ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.204.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 1 !-40 to +100 !DegC! ! ! ! ! ! !

! !F/D !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.205.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 2 !-40 to +100 !DegC! ! ! ! ! ! !

! !FWD Cab !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.206.10 !Cab temp !W 256 ! % ! ! 10 ! 6 !BNR ! VF ! !

! !reg vlv !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group1!R 0.25 ! % ! ! ! ! ! ! !

! !TAV F/D !+/- 1.0 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.207.10 !Cab temp !W 256 ! % ! ! 10 ! 6 !BNR ! VW ! !

! !reg vlv !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group2!R 0.25 ! % ! ! ! ! ! ! !

! !TAV FWD !+/- 1.0 ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.213.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-55 to +100 !DegC! ! ! ! ! ! !

! !Group 3 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp AFT ! ! ! ! ! ! ! ! !

! !Cab ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.220.10 !Cab temp !W 256 ! % ! ! 10 ! 6 !BNR ! VA ! !

! !reg vlv !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group3!R 0.25 ! % ! ! ! ! ! ! !

! !TAV AFT !+/- 1.0 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.222.10 !Min bleed !W 256 ! % ! ! 10 ! 10 !BNR ! ! !

! !press !0 to 100 ! % ! ! ! ! ! ! !

! !demand !R 0.25 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.241.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 3 !-40 to +100 !DegC! ! ! ! ! ! !

! !AFT Cab !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.242.10 !Selected !W 128 !DegC! ! 10 ! 2 !BNR ! ! !

! !comp.temp.!10 to 40 !DegC! ! ! ! ! ! !

! !Group 1 !R 0.25 !DegC! ! ! ! ! ! !

! !F/D !+/- 0.5 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.245.10 !Selected !W 128 !DegC! ! 10 ! 2 !BNR ! ! !

! !comp.temp.!18 to 30 !DegC! ! ! ! ! ! !

! !Group 3 !R 0.125 !DegC! ! ! ! ! ! !

! !AFT Cab !+/- 0.5 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.250.10 !Mix !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Manifold !-55 to +100 !DegC! ! ! ! ! ! !

! !Temp F/D !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.251.10 !Mix !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Manifold !-55 to +100 !DegC! ! ! ! ! ! !

! !Temp !R 0.125 !DegC! ! ! ! ! ! !

! !Cabin !+/- 2 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.260.10 !Pack !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Temp !-55 to +100 !DegC! ! ! ! ! ! !

! !Demand LH !R 0.125 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.261.10 !Pack !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Temp !-55 to +100 !DegC! ! ! ! ! ! !

! !Demand RH !R 0.125 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.356.10 !Mainte- ! ! ! ! ! !ISO ! ! !

! !nance mes-! ! ! ! ! ! ! ! !

! !sage word ! ! ! ! ! ! ! ! !

!-----------------------------------------------------------------------------!

-------------------------------------------------------------------------------

| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

!2.202.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-60 to +75 !DegC! ! ! ! ! ! !

! !Group 1 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp F/D ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.203.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-60 to +75 !DegC! ! ! ! ! ! !

! !Group 2 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp FWD ! ! ! ! ! ! ! ! !

! !Cab ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.204.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 1 !-60 to +105 !DegC! ! ! ! ! ! !

! !F/D !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.205.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 2 !-40 to +100 !DegC! ! ! ! ! ! !

! !FWD Cab !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.206.10 !Trim air !W 256 ! % ! ! 10 ! 6 !BNR ! VF ! !

! !valve !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group1!R 0.25 ! % ! ! ! ! ! ! !

! !TAV F/D !+/- 1.0 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.207.10 !Cab temp !W 256 ! % ! ! 10 ! 6 !BNR ! VW ! !

! !reg vlv !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group2!R 0.25 ! % ! ! ! ! ! ! !

! !TAV FWD !+/- 1.0 ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.213.10 !Cab. comp.!W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !temp. !-60 to +75 !DegC! ! ! ! ! ! !

! !Group 3 !R 0.125 !DegC! ! ! ! ! ! !

! !Ambient !+/- 0.5 !DegC! ! ! ! ! ! !

! !temp AFT ! ! ! ! ! ! ! ! !

! !Cab ! ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.220.10 !Cab temp !W 256 ! % ! ! 10 ! 6 !BNR ! VA ! !

! !reg vlv !0 to 100 ! % ! ! ! ! ! ! !

! !pos Group3!R 0.25 ! % ! ! ! ! ! ! !

! !TAV AFT !+/- 1.0 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.221.10 !APU !W 256 ! % ! ! 7 ! 10 !BNR ! ! !

! !Flow !0 to 100 ! % ! ! ! ! ! ! !

! !demand !R 1 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.222.10 !EIU !W 256 ! % ! ! 10 ! 10 !BNR ! ! !

! !pressure !0 to 100 ! % ! ! ! ! ! ! !

! !demand !R 0.25 ! % ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.241.10 !Duct temp !W +/- 256 !DegC! 29 ! 11 ! 4 !BNR ! ! !

! !Group 3 !-60 to +105 !DegC! ! ! ! ! ! !

! !AFT Cab !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2.0 ! ! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.242.10 !Selected !W 128 !DegC! ! 10 ! 2 !BNR ! ! !

! !comp.temp.!17 to 31 !DegC! ! ! ! ! ! !

! !Group 1 !R 0.125 !DegC! ! ! ! ! ! !

! !F/D !+/- 0.5 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.244.10 !Selected !W 128 !DegC! ! 10 ! 2 !BNR ! ! !

! !comp.temp.!17 to 31 !DegC! ! ! ! ! ! !

! !Group 1 !R 0.125 !DegC! ! ! ! ! ! !

! !FWD !+/- 0.5 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.245.10 !Selected !W 128 !DegC! ! 10 ! 2 !BNR ! ! !

! !comp.temp.!17 to 31 !DegC! ! ! ! ! ! !

! !Group 3 !R 0.125 !DegC! ! ! ! ! ! !

! !AFT Cab !+/- 0.5 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.250.10 !Mix !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Manifold !-60 to +105 !DegC! ! ! ! ! ! !

! !Temp F/D !R 0.125 !DegC! ! ! ! ! ! !

! ! !+/- 2 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.251.10 !Mix !W +/- 256 !DegC! ! 11 ! 4 !BNR ! ! !

! !Manifold !-60 to +105 !DegC! ! ! ! ! ! !

! !Temp !R 0.125 !DegC! ! ! ! ! ! !

! !Cabin !+/- 2 !DegC! ! ! ! ! ! !

!--------------!----------!------------!----!----!----!----!----!-----!-------!

!2.356.10 !Mainte- ! ! ! ! ! !ISO ! ! !

! !nance mes-! ! ! ! ! ! ! ! !

! !sage word ! ! ! ! ! ! ! ! !

!-----------------------------------------------------------------------------!

E. Cockpit and Cabin Temperature Control Parameter List Remarks:

R = Resolution

W = Wordrange

(1) = Significant Data Digits

F. Alpha Call-Up List

! ALPHA ! PARAMETER ! NAME !

! CALL UP ! NUMBER ! !

!----------------------------------------------------------------------------!

! ZDW1 ! 5D.1.060.01! Discrete Data Word !

! ! 5D.2.060.10! !

! ! ! !

! VF ! 5D.1.206.01! Cab. Temp. Reg. Vlv. Pos. Group 1 F/D % !

! ! 5D.2.206.10! !

! ! ! !

! VW ! 5D.1.207.01! Cab. Temp. Reg. Vlv. Pos. Group 2 FWD % !

! ! 5D.2.207.10! !

! ! ! !

! VA ! 5D.1.220.01! Cab. Temp. Reg. Vlv. Pos. Group 3 AFT % !

! ! 5D.1.220.10! !

!----------------------------------------------------------------------------!

! ALPHA ! PARAMETER ! NAME !

! CALL UP ! NUMBER ! !

!----------------------------------------------------------------------------!

! ZDW1 ! 5D.1.060.01! Discrete Data Word !

! ! 5D.2.060.10! !

! ! ! !

! VF ! 5D.1.206.01! Trim Air Valve Position Group 1 F/D % !

! ! 5D.2.206.10! !

! ! ! !

! VW ! 5D.1.207.01! Trim Air Valve Position Group 2 FWD % !

! ! 5D.2.207.10! !

! ! ! !

! VA ! 5D.1.220.01! Trim Air Valve Position Group 3 AFT % !

! ! 5D.1.220.10! !

!----------------------------------------------------------------------------!

** ON A/C NOT FOR ALL

6. Component Description

A. Controller FIN: 8-HK

Zone Contoller Location ** ON A/C NOT FOR ALL

The zone controller 8HK is a 4 MCU box (to ARINC 600), it consists of a primary channel and an electrically independent-secondary channel. This secondary channel acts as a back-up if there is a primary channel failure. The primary channel will give a reduced control of the system when there is a partial loss of signals to it (under certain conditions). The secondary channel will take over command of the system (at a reduced level), if there is a failure of the primary channel.
The functions of the zone controller are as follows:

to maintain constant temperatures at a preselected value in the cockpit, fwd cabin and aft cabin zones,
to compute and deliver a demand signal for both pack controllers 7HH (27HH) as a reference for the pack temperature-control system.
to elaborate a pack flow demand and supply it to both pack controllers 7HH (27HH),
to elaborate a demand signal to the APU control,
to elaborate and deliver an engine rpm modulation to FADEC in order to get the necessary bleed pressure,
to give to FADEC a bleed-air valve status,
to give BITE information on the wing anti-ice system to CFDS,
to give BITE information of the ZC and both PCs to the CFDS,
to perform overheat detection and corrective action,
to calibrate, code and deliver information for the CRT displays,
to reduce crew workload with the elimination of manual control. The system detects its own failures, and takes the necessary actions to overcome these failures automatically.

Table 1 shows how the zone controller functions are divided between the primary and secondary channel.

Table 1 (Primary and Secondary Channel Functions)

-----------------------------------------------------------------------------

! FUNCTION ! PRIMARY ! SECONDARY!

!--------------------------------------------!---------------!---------------!

!Zone temp. control to selected temps. ! YES ! NO !

!Zone temp. to constant 24 DEG.C (75.2 DEG.F)! NO ! YES !

!Trim Modulating Valve Control ! YES ! NO !

!Trim-Air Pressure Regulating Valve Opening ! YES ! NO !

!Trim-Air Pressure Regulating Valve Closing ! YES ! YES !

!Flow demand optimisation ! YES ! NO !

!Failure analysis ! YES ! YES !

!BITE ! YES ! YES !

!BITE storage and trans. to CFDS ! NO ! YES !

!ECAM indications ! YES ! YES !

!Data handling ! YES ! YES !

!Overheat detection and indication ! YES ! YES !

!ATA 36 Bleed Valve status ! NO ! YES !

!ATA 30 Wing Anti-Ice status ! NO ! YES !

!ATA 30 Nacelle Anti-Ice status ! NO ! YES !

!ATA 30 Wing Anti-Ice failure ! NO ! YES !

!analysis and trans. to CFDS ! ! !

!Fan monitoring ! YES ! NO !

-----------------------------------------------------------------------------

Air Conditioning System Controller (ACSC)
(Ref. AMM D/O 21-61-00-00)

B. Trim-Air Valve

Trim Air Valve (11HK, 12HK, 13HK) ** ON A/C NOT FOR ALL

The trim-air valve 11HK (12HK, 13HK) consists of an actuator assembly and a valve body assembly. They are bolted together and internally connected. A butterfly valve is driven by a stepper motor through reduction gears which have mechanical end stops. A cam installed on the shaft, operates a limit switch which signals fully closed to the zone controller 8HK. Step counting will signal the zone controller main and secondary channel the valve position. The zone controller uses this information for BITE and ECAM display. A manual override and visual position indicator device is installed on the bottom of the shaft.

Trim Air Valve (11HK, 12HK, 13HK) ** ON A/C NOT FOR ALL

The trim-air valve 11HK (12HK, 13HK) consists of an actuator assembly and a valve body assembly. They are bolted together and internally connected. A butterfly valve is driven by a stepper motor through reduction gears which have mechanical end stops. A cam installed on the shaft, operates a limit switch which signals fully open or fully closed to the ACSC. Step counting will signal the ACSC's the valve position. The ACSC use this information for BITE and ECAM display. A manual override and visual position indicator device is installed on the bottom of the shaft.

C. Zone Temperature Sensor

Zone Temperature Sensor (21HK, 22HK, 23HK) ** ON A/C NOT FOR ALL

There are three zone-temperature sensors 21HK (22HK, 23HK) one installed in the cockpit, fwd cabin and aft cabin zones. Each sensor consists of a ventilated plastic body into which are potted two thermistors. One thermistor supplies the zone controller 8HK primary channel the other the secondary channel, each performs control and indication. Also incorporated is a 6-pin connector.

Zone Temperature Sensor (21HK, 22HK, 23HK) ** ON A/C NOT FOR ALL

There are three zone-temperature sensors 21HK (22HK, 23HK) one installed in the cockpit, fwd cabin and aft cabin zones. Each sensor consists of a ventilated plastic body into which are potted two thermistors. One thermistor supplies the ACSC 1, the other the ACSC 2. Also incorporated is a 6-pin connector.

D. Duct Temperature Sensor

Duct Temperature Sensor (15HK, 16HK, 17HK) ** ON A/C NOT FOR ALL

There are three duct-temperature sensors 15HK (16HK, 17HK), one installed in the main supply ducts to the cockpit, fwd cabin and aft cabin zones. Each sensor consists of a ventilated metal body into which are potted two thermistors. One thermistor supplies the primary channel (of the zone controller 8HK), the other supplies the secondary channel (of the same controller). Each gives control indication and overheat detection. Also incorporated is a 6-pin electrical connector.

Duct Temperature Sensor (15HK, 16HK, 17HK) ** ON A/C NOT FOR ALL

There are three duct-temperature sensors 15HK (16HK, 17HK), one installed in the main supply ducts to the cockpit, fwd cabin and aft cabin zones. Each sensor consists of a ventilated metal body into which are potted two thermistors. One thermistor supplies the lane 1, the other supplies the second lane of a ACSC. Each gives control indication and overheat detection. Also incorporated is a 6-pin electrical connector.

E. Mixer Temperature Sensor

Mixer Temperature Sensor (24HK, 25HK) ** ON A/C NOT FOR ALL

There are two mixer temperature sensors 24HK (25HK) one installed on each side of the mixer. Each consists of a ventilated metal body into which are potted two thermistors. One thermistor supplies the primary channel (of the zone controller 8HK) the other the secondary channel. Also incorporated is a 6-pin electrical connector.

Mixer Temperature Sensor (24HK, 25HK) ** ON A/C NOT FOR ALL

There are two mixer temperature sensors 24HK (25HK), one installed on each side of the mixer. The cockpit mixer temperature sensor is connected to the ACSC 1 and the cabin mixer temperature sensor is connected to the ACSC 2. Each temperature sensor consists of a ventilated metal body into which are potted two thermistors. One thermistor supplies the lane 1 the other the second lane of the ACSC. Also incorporated is a 6-pin electrical connector.

F. Zone Temperature Selector

Zone Temperature Selector (27HK, 28HK, 29HK) ** ON A/C NOT FOR ALL

There are three zone-temperature selectors 27HK (28HK, 29HK) installed on the AIR COND panel 30VU in the cockpit overhead panel. One selector for the cockpit, fwd cabin and aft cabin zones. Each one consists of a rotary setting potentiometer in a tubular metal housing. The temperature range is between 18 DEG.C (64.40 DEG.F) and 30 DEG.C (86.00 DEG.F) when in the 12 o'clock position the temperature is approx. 24 DEG.C (75.20 DEG.F). Each selector is connected to the primary channel (of the zone controller 8HK) for temperature control function. An electrical connector is mounted on the base of the selector.

Zone Temperature Selector (27HK, 28HK, 29HK) ** ON A/C NOT FOR ALL

There are three zone-temperature selectors 27HK (28HK, 29HK) installed on the AIR COND panel 30VU in the cockpit overhead panel. One selector for the cockpit, fwd cabin and aft cabin zones. Each one consists of a rotary setting potentiometer in a tubular metal housing. The temperature range is between 18 DEG.C (64.40 DEG.F) and 30 DEG.C (86.00 DEG.F) when in the 12 o'clock position the temperature is approx. 24 DEG.C (75.20 DEG.F). The temperature selector for the cockpit zone is connected to both lanes of the ACSC 1. The temperature selectors for the cabin zones are connected to both lanes of the ACSC 2.

G. Trim-Air Pressure Regulating-Valve

Trim-Air Pressure Regulating-Valve (14HK) ** ON A/C NOT FOR ALL

Trim-Air Pressure Regulating-Valve (14HK) functional ** ON A/C NOT FOR ALL

Trim-air Pressure Regulating-Valve (14HK) ** ON A/C NOT FOR ALL

The Trim-Air Pressure Regulating-Valve (TAPRV) 14HK is a three-inch steel-butterfly type valve, which is electrically supplied and pneumatically actuated.
The TAPRV regulates the pressure of the hot air, which is supplied to the trim-air valves 11HK (12HK, 13HK). It performs the system shut-off function.
It also regulates the downstream pressure to a nominal 280 mbar above cabin pressure. A safety function is also included to reduce downstream pressure by about 50 % when any duct temperature goes above 80 DEG.C (176.00 DEG.F). The pressure regulation is controlled pneumatically. The two solenoids control the ON/OFF function and the safety function. A limit switch indicates CLOSED/NOT CLOSED position of the valve to the zone controller (8HK) and the ECAM system.
The Trim-Air Pressure Regulating-Valve (TAPRV) 14HK is a three-inch steel-butterfly type valve, which is electrically supplied, and pneumatically actuated.
The TAPRV regulates the pressure of the hot air, which flows to the trim-air valves 11HK (12HK, 13HK). It performs the system shut-off function.
It also regulates the downstream pressure to a nominal 280 mbar above cabin pressure. A safety function is also included to reduce downstream pressure by about 50 % when any duct temperature goes above 80 DEG.C (176.00 DEG.F). The pressure regulation is controlled pneumatically. The two solenoids control the ON/OFF function and the safety function. A limit switch indicates CLOSED/NOT CLOSED position to the ACSC and the ECAM system.

H. Hot-Air Pressure Switch

Hot-Air Pressure Switch (26HK)

The hot-air pressure switch 26HK is installed downstream of the trim-air pressure regulating-valve 14HK. The pressure switch consists of a housing which contains a hermetically sealed microswitch, a stainless-steel diaphragm, a snap-action disc spring and an electrical connector.The stainless-steel diaphragm when pressurized, exerts a force on the snap-action disc spring. At a predetermined pressure, the disc spring will snap over and depress the microswitch actuator. Falling pressure causes the disc spring to return to the position which allows the microswitch to open.

I. Check Valve

Check Valve (18HM, 19HM)

Two check valves 18HM (19HM) are installed upstream of the trim-air pressure regulating-valve 14HK. One is installed in each trim-air duct from pack 1 and pack 2. Two semicircular flaps are installed on a hinge bar and a spring holds the semicircular flaps in the closed position. Airflow through the trim-air supply ducts will lift these semicircular flaps and allow the air to flow through the check valves to the trim-air pressure regulating-valve 14HK. Airflow in the opposite direction will push the flaps back onto their seats and stop the airflow.

** ON A/C NOT FOR ALL

7. Operation

Cockpit and Cabin Temperature Control ** ON A/C NOT FOR ALL

A. Normal Operation
Primary Channel

Primary Channel of the Zone Controller - Normal Control Mode ** ON A/C NOT FOR ALL

The crew selects the desired temperature on the zone temperature selectors 27HK (28HK, 29HK) located on the cockpit overhead panel 30VU. The zone controller 8HK receives these demand signals and computes the necessary input temperature to the zones.
Hot bleed-air is tapped downstream of the flow control valves 8HB (11HB). The air flows through the check valves 18HM (19HM) to the trim-air pressure regulating-valve 14HK. This valve controls the pressure of the hot trim-air going into the hot air manifold, to 4 psi (0.2758 bar) above cabin pressure. The hot air pressure switch 26HK continuously monitors the pressure of the hot trim-air. If the pressure in the system goes to 6.5 psi (0.4482 bar) above cabin pressure, the contact in the pressure switch 26HK is closed and the zone controller 8HK sends a signal to the ECAM system. This signal stays until the pressure falls below 5 psi (0.3447 bar) above cabin pressure. The zone controller also determines which zone needs the lowest duct inlet temperature. This lowest temperature demand signal is sent to the pack temperature control system (Ref. 21-61-00), where the pack outlet temperature is adjusted accordingly. The other two zones will require higher duct inlet temperatures, this is done with hot bleed-air from the trim-air system. Each zone has its own trim-air valve 11HK (12HK, 13HK) and the zone controller 8HK adjusts each valve to give the necessary temperatures.

(1) Zone Temperature Control
The primary channel of the zone controller 8HK increases the zone reference temperatures selected on each temperature selector 27HK (28HK,29HK). It does this to compensate for reduced humidity and a decrease in interior wall temperature, (which is dependent on aircraft altitude).
The normal limits for the zone duct-inlet temperatures are low 8 DEG.C (46.40 DEG.F) to high 50 DEG.C (122.00 DEG.F). These limits can be extended to low 2 DEG.C (35.60 DEG.F) to high 70 DEG.C (158.00 DEG.F) during pull-up and pull-down. This is recognised because the measured temperature is outside the selectable range of 18 DEG.C (64.40 DEG.F) to 30 DEG.C (86.00 DEG.F). The extended operating limits also apply during one pack operation, to maintain the temperature below 30 DEG.C (86.00 DEG.F) or above 21 DEG.C (69.80 DEG.F).
The required mix manifold temperature (the lowest duct demand temperature) is compared with the actual mix manifold temperature. This determines the necessary pack outlet temperature, which is computed in the zone controller 8HK and signalled to both pack controllers 7HH (27HH).

(2) Zone Temperature Control
The zone temperature control determine a zone temperature demand for each zone. This takes into account the selected zone reference temperatures and a compensation for reduced humidity and a decrease in interior wall temperature, (which is dependent on aircraft altitude). An offset due to individual zone adjustments via the flight attendant panel (FAP) is integrated.
The normal limits to ensure sufficient cabin comfort for the zone duct-inlet temperatures are low 8 DEG.C (46.40 DEG.F) to high 50 DEG.C (122.00 DEG.F). These limits can be extended to low 2 DEG.C (35.60 DEG.F) to high 70 DEG.C (158.00 DEG.F) during pull-up and pull-down or any case for which the measured temperature is outside the selectable range of 18 DEG.C (64.40 DEG.F) to 30 DEG.C (86.00 DEG.F). The extended operating limits also apply during one pack operation, to maintain the temperature below 30 DEG.C (86.00 DEG.F) or above 21 DEG.C (69.80 DEG.F).
The required mix manifold temperature (the lowest duct demand temperature) is compared with the actual mix manifold temperature. This determines the necessary pack outlet temperature, which is computed by both ACSC's.

(3) Flow Control Reference
The crew can select the flow control reference to 80 %, 100 % or 120 % of the nominal value. The selected values are modified under the conditions listed below:

during APU operation, the zone controller 8HK receives the discrete APU bleed-valve open signal and resets the flow reference to 120 %. This overrides any other selection or commands, (The APU control and APU demand signals control the APU bleed air flow).
if 80 % is selected, the controller can increase the flow reference up to 100 % when the cooling demand is not met. This means one zone duct demand temperature has reached predetermined limit value.
when there is only one pack operating the controller 7HH (27HH) for that pack will increase the flow reference to 120 %.

(4) Flow Control Reference
The crew can select the flow control reference to 80 % (ECON) of the nominal value. The selected values are modified under the conditions listed below:

during APU operation, the zone controller 8HK receives the discrete APU bleed-valve open signal and resets the flow reference to 120 % to command the FCV fully open. This overrides any other selection or commands, (The APU control and APU demand signals control the APU bleed air flow).
if 80 % is selected, the controller can increase the flow reference up to 100 % when the cooling demand is not met. This means one zone duct demand temperature has reached predetermined limit value.
when there is only one pack operating the controller 7HH (27HH) for that pack will increase the flow reference to 120 %.

(5) Flow Control Reference
The crew can select the flow control reference to 80 %, 100 % or 120 % of the nominal value. The pack flow demand reference signal is computed by ACSC 1 and ACSC 2 separately. In case of special conditions the ACSC generates an other flow demand than the one selected by the pilot in order to fulfill the environmental temperature and flow requirements:

during APU operation, the ACSC's receive the discrete APU bleed-valve open signal and reset the flow reference to 120 %. This overrides any other selection or commands, (The APU control and APU demand signals control the APU bleed air flow).
if 80 % is selected, the ACSC's can increase the flow reference up to 100 % when the cooling demand is not met. This means one zone duct demand temperature has reached predetermined limit value.
when there is only one pack operating the controller 47HH (57HH) for that pack will increase the flow reference to 120 %.

(6) Flow Control Reference
The crew can select the flow control reference to 80 % (ECON) of the nominal value. The pack flow demand reference signal is computed by ACSC 1 and ACSC 2 separately. In case of special conditions the ACSC generates an other flow demand than the one selected by the pilot in order to fulfill the environmental temperature and flow requirements:

during APU operation, the ACSC's receive the discrete APU bleed-valve open signal and reset the flow reference to 120 % to command the FCV fully open. This overrides any other selection or commands, (The APU control and APU demand signals control the APU bleed air flow).
if 80 % is selected, the ACSC's can increase the flow reference up to 100 % when the cooling demand is not met. This means one zone duct demand temperature has reached predetermined limit value.
when there is only one pack operating the controller 47HH (57HH) for that pack will increase the flow reference to 120 %.

(7) Flow Control Reference
The crew can select the flow control reference to 80 %, 100 % or 120 % of the nominal value. The pack flow demand reference signal is computed by ACSC 1 and ACSC 2 separately. In case of special conditions the ACSC generates an other flow demand than the one selected by the pilot in order to fulfill the environmental temperature and flow requirements:

during APU operation, the ACSC's receive the discrete APU bleed-valve open signal and reset the flow reference to 120 %. This overrides any other selection or commands, (The APU control and APU demand signals control the APU bleed air flow).
if 80 % is selected, the ACSC's can increase the flow reference up to 100 % (in flight) and 90% (on ground with the packs supplied by engine bleed) when the cooling demand is not met. This means one zone duct demand temperature has reached predetermined limit value.
when there is only one pack operating the controller 47HH (57HH) for that pack will increase the flow reference to 120 %.

(8) APU Demand Signal
A signal from the zone controller 8HK can increase the APU bleed air flow output if any selected zone temperature is not met. The demand signal is 0% for most normal operating conditions. This increases proportionally up to 100 %, when the duct demand temperature (of any zone) reaches the predetermined low (cooling) or high (heating) values.

(9) APU Demand Signal
A signal from the ACSC 47HH can increase the APU bleed air flow output if any selected zone temperature is not met. The demand signal is 0% for most normal operating conditions. This increases proportionally up to 100 %, when the duct demand temperature (of any zone) reaches the predetermined low (cooling) or high (heating) values.

(10) FADEC Demand Signal
The zone controller 8HK can supply a demand signal to FADEC (Full Authority Digital Engine Control) to increase the engine idle setting during descent and ground operation. It does this to increase the available bleed pressure when the bleed pressure is insufficient to provide the necessary flow through the packs 10HM (11HM) for cabin cooling. The demand signal is 0 % for most normal operating conditions. This increases proportionally to 100 % (to give up to 30 psig pack inlet pressure), when the duct demand temperature of any zone reaches a predetermined low value (lack of cooling). The pack inlet pressure must also have reached a predetermined low value.

(11) FADEC Demand Signal
The ACSC can supply a demand signal to FADEC (Full Authority Digital Engine Control) to increase the engine idle setting during descent and ground operation. It does this to increase the available bleed pressure when the bleed pressure is insufficient to provide the necessary flow through the packs 10HM (11HM) for cabin cooling. The demand signal is 0 % for most normal operating conditions. This increases proportionally to 100 % (to give up to 30 psig pack inlet pressure), when the duct demand temperature of any zone reaches a predetermined low value (lack of cooling). The pack inlet pressure must also have reached a predetermined low value.

(12) Duct Overheat Detection and Actions
Both, the primary and secondary channel of the zone controller 8HK, can detect an overheat 88 DEG.C (190.40 DEG.F) in any one of the three zone-supply ducts. The primary channel does this through the primary duct-temperature sensor. The secondary channel does this through the secondary duct temperature sensor. The first channel (primary or secondary) to detect an overheat will send a signal to make the FAULT light on the HOT-AIR switch 7HK come on. It will also close the trim-air pressure-regulating valve 14HK; the primary channel will close all three trim-air valves 11HK (12HK, 13HK).
The FAULT light will stay on and the closed valves will stay closed until:

the duct temperature goes down below 70 DEG.C (158.00 DEG.F),
the HOT-AIR switch 7HK is released (to make the FAULT light go off.),
the HOT-AIR switch 7HK is pressed again (to open the valves 14HK, 11HK, 12HK, and 13HK).

The primary channel can detect an early overheat 80 DEG.C (176.00 DEG.F) condition. It does this through the duct temperature sensor 15HK (16HK, 17HK). The primary channel commands the trim-air pressure-regulating valve 14HK to reduce its setting from 280 mbar to 140 mbar when 80 DEG.C (176.00 DEG.F) is detected. The higher pressure setting is commanded again when all duct temperatures are below 70 DEG.C (158.00 DEG.F).

(13) Duct Overheat Detection and Actions
Both ACSC's can detect an overheat 88 DEG.C (190.40 DEG.F) in any one of the three zone-supply ducts. The ACSC will send a signal to make the FAULT light on the HOT-AIR switch 7HK come on. It will also close the trim-air pressure-regulating valve 14HK and the three trim-air valves 11HK (12HK, 13HK).
The FAULT light will stay on and the closed valves will stay closed until:

the duct temperature goes down below 70 DEG.C (158.00 DEG.F),
the HOT-AIR switch 7HK is released (to make the FAULT light go off.),
the HOT-AIR switch 7HK is pressed again (to open the valves 14HK, 11HK, 12HK, and 13HK).

(14) Trim-Air System Failure
Failure of the trim-air system will cause the primary channel (of the zone controller 8HK) to change to a back-up control mode. Separate control of cockpit and cabin is still given, but a distinction between forward and aft cabin is not made. In this mode each pack is controlled separately, pack 1 for the cockpit and pack 2 for the cabin.

(15) Trim-Air System Failure
Failure of the trim-air system will cause a modification of the control mode. Separate control of cockpit and cabin is still given, but a distinction between forward and aft cabin is not made. It will be an average from the two cabin duct demands. In this mode each pack is controlled separately, pack 1 for the cockpit and pack 2 for the cabin.

B. Failure Conditions
Secondary Channel

Secondary Channel of the Zone Controller - Back-Up Control Mode ** ON A/C NOT FOR ALL

The system has different back-up functions to make sure of safe operation in the event of failure. The primary channel (of the zone controller 8HK) normally gives full (or back-up) control of the system, with the secondary channel for failure storage and system monitoring.

(1) Back-Up Control
Failure of the primary channel (of the zone controller 8HK) will cause the secondary channel to take over to give a reduced level of control. In this failure condition, control of the trim-air system is lost. The cockpit and cabin temperature control is similar to that described above (Ref. B. Trim-Air System Failure) for the primary channel. The following reduced functions are also given:

24 DEG.C (75.20 DEG.F) replaces the selectable zone temperatures without altitude correction,
the APU demand signal is not available,
the flow setting optimization is not available.

(2) Duct Overheat Detection and Actions
Both the primary and secondary channel of the zone controller 8HK give overheat detection and related actions. Refer to A. (5) for further details.

(3) Duct Overheat Detection and Actions
Both ACSC's 47HH (57HH) give overheat detection and related actions. Refer to A. (5) for further details.

C. Control and Indication

Air Conditioning Panel ** ON A/C NOT FOR ALL

The temperature in each zone is controlled to between, cold 18 DEG.C (64.40 DEG.F) and hot 30 DEG.C (86.00 DEG.F). This is relative to the selection of the temperature selector(s) (27HK, 28HK, 29HK). In the center position the temperature is controlled to about 24 DEG.C (75.20 DEG.F).
The hot air which is supplied to the trim-air pressure regulating-valve 14HK, is unconditioned bleed-air. The hot-air switch 7HK installed in the cockpit overhead panel 30VU controls this valve.
AUTO (switch depressed)-The trim-air pressure regulating-valve 14HK pneumatically controls the hot-air manifold pressure to 4 psi (0.2758 bar) above cabin pressure. The valve will electrically close automatically if the temperature in the supply duct goes above 88 DEG.C (190.40 DEG.F).
OFF (switch released)-OFF comes on white, the trim-air pressure regulating- valve 14HK closes. FAULT comes on amber when an overheat condition is detected and remains amber, regardless of the hot-air switch position, until the temperature falls below 70 DEG.C (158.00 DEG.F).

Air Conditioning Panel ** ON A/C NOT FOR ALL

The temperature in each zone is controlled to between, cold 18 DEG.C (64.40 DEG.F) and hot 30 DEG.C (86.00 DEG.F). This is relative to the selection of the temperature selector(s) (27HK, 28HK, 29HK). In the center position the temperature is controlled to about 24 DEG.C (75.20 DEG.F).
The hot air which is supplied to the trim-air pressure regulating-valve 14HK, is unconditioned bleed-air. The hot-air switch 7HK installed in the cockpit overhead panel 30VU controls this valve.
AUTO (switch depressed)-The trim-air pressure regulating-valve 14HK pneumatically controls the hot-air manifold pressure to 4 psi (0.2758 bar) above cabin pressure.
OFF (switch released)-OFF comes on white, the trim-air pressure regulating- valve 14HK closes. FAULT comes on amber when an overheat condition is detected and remains amber, regardless of the hot-air switch position, until the temperature falls below 70 DEG.C (158.00 DEG.F).

** ON A/C NOT FOR ALL

8. BITE Test

MCDU Page - LAST LEG REPORT, PREVIOUS LEGS REPORT, LRU IDENTIFICATION ** ON A/C NOT FOR ALL

MCDU Page - TEST ** ON A/C NOT FOR ALL

MCDU Page - CLASS 3 FAULTS, GND REPORT ** ON A/C NOT FOR ALL

A. Built-In Test Equipment (BITE)
The zone temperature controller 8HK controls the Built-In Test Equipment (BITE) function for the cockpit and cabin temperature control system. It monitors the hardware. It sends failure data to the Centralized Fault Display System (CFDS) (Ref. AMM D/O 31-32-00-00).
There are the following tests:

Power-up Test,
Continuous Monitoring,
System Test.

The ACSC 2 57HH control the Built-In Test Equipment (BITE) function for the cockpit and cabin temperature control system. It monitors the hardware. It sends failure data to the Centralized Fault Display System (CFDS) (Ref. 31-32-00).
For BITE of the ACSC (Ref. AMM D/O 21-61-00-00).

(1) Power-up Test
If the aircraft is on the ground and

both packs are switched off,
the flow control valves are closed,
both pack controllers energized and having finished their power-up tests plus 5 sec delay for confirmation,

the ZC power-up test is done after a cold start, a reset or a power supply interrupt (a loss of power for more than 2 milliseconds).
The duration of the power-up test is 36 s. During the power-up test:

internal devices initialize and check the hardware and software of the ZC,
on the COND page of the lower ECAM display unit, the 3 trim air valve symboles move from COOL to HOT and from HOT to COOL (some other repercussions may occur depending on the A/C configuration but these can be ignored).

When the test passed, the COND page shows the normal display.
When the test fails:

the MASTER CAUT light comes on,
on the upper ECAM display unit, the warning COND ZONE REGUL FAULT comes on,
on the COND page of the lower ECAM display unit, an amber XX in place of temperature indications come on.

(2) ZC Reset
For the ZC reset the subsequent circuit breakers must be opened for at least 200 miliseconds:.

AIR COND/ZONE TEMP (1HK) on the circuit breaker panel 122VU,
AIR COND/ZONE TEMP (2HK) on the circuit breaker panel 122VU,
AIR COND/ZONE TEMP (3HK) on the circuit breaker panel 122VU,
AIR COND/ZONE TEMP (4HK) on the circuit breaker panel 122VU.

When the circuit breakers are closed again, the ZC power-up test starts.

(3) Continuous Monitoring
The monitoring is done continuously after power is supplied to the system. In the event of a failure detection, the system activates the related back-up and discriminates the faulty line replaceable unit.

(4) System Test
A system test is only done if it is requested on the Multipurpose Control Display Unit (MCDU). It is done before and after replacement of a component. It continues for not more than 300 seconds.

B. MCDU
You can set the MCDU to show the failures that occurred during the last flight. The data comes from the CFDS (Ref. AMM D/O 31-32-00-00). You can also start the system test from the MCDU.
From the CAB TEMP CONT menu, you can set:

<LAST LEG REPORT,
<PREVIOUS LEGS REPORT,
<LRU IDENTIFICATION,
<GND REPORT,
<TEST,
<CLASS 3 FAULTS.

(1) <LAST LEG REPORT
If you push the <LAST LEG REPORT line key, the screen shows for each failure that occurred during the last leg:

the date of the last leg,
the time the failure occured,
the ATA number of the component,
the functional designation of the component,
the FIN of the component.

The screen can show a maximum of two failures at a time. If there are more failures, you must push the next page key on the MCDU keyboard. If there are no failures, NO FAULT DETECTED is shown.

(2) <PREVIOUS LEGS REPORT
If you push the <PREVIOUS LEGS REPORT line key, the screen shows for each failure that has not been corrected from previous reports:

the aircraft identification,
the applicable flight leg,
the date of the applicable flight leg,
the time the failure occured,
the flight phase where the failure occured,
the ATA number of the component,
the functional designation of the component,
the FIN of the component.

The screen can show a maximum of two failures at a time. If there are more failures, you must push the next page key on the MCDU keyboard. If there are no failures, NO FAULT DETECTED is shown.

(3) <LRU IDENTIFICATION
If you push the <LRU IDENTIFICATION line key, the screen shows the functional designation and the partnumber of the zone controller and the pack controllers.
Additionally to this information the line INSTALLED IN A321 will be indicated, if the pin programming of the controllers is correct. If INSTALLED IN A320 appears, no pin 'A321' is set. The line will not be indicated if there is no valid data from the applicable controller.

(4) <LRU IDENTIFICATION
If you push the <LRU IDENTIFICATION line key, the screen shows the functional designation and the partnumber of the zone controller and the pack controllers.
Additionally to this information the line INSTALLED IN A320/A319 will be indicated, if the pin programming of the controllers is correct. If INSTALLED IN A321 appears, no pin 'A320/A319' is set. The line will not be indicated if there is no valid data from the applicable controller.

(5) <GND REPORT
If you push the <GND REPORT line key, the screen shows for each failure that has not been corrected from previous reports:

the aircraft identification,
the time the failure occured,
the flight phase where the failure occured,
the ATA number of the component,
the functional designation of the component,
the FIN of the component.

The screen can show a maximum of two failures at a time. If there are more failures, you must push the next page key on the MCDU keyboard. If there are no failures, NO FAULT DETECTED is shown.

(6) <TEST
If you push the <TEST line key, the <CAB TEMP CONT TEST page is shown.
The screen shows PACK 1 AND PACK 2 OFF.
If you push the <CONTINUE line key, the screen shows,

(IN PROGRESS MAX 300S),
TEST OK if there are no failures,
or
the ATA number, the functional designation, the FIN of the component and END OF TEST.

(7) <CLASS 3 FAULTS
If you push the <CLASS 3 FAULTS line key, the screen shows for each class 3 failure:

the applicable flight leg,
the date of the applicable flight leg,
the time when the failure occurred,
the flight phase where the failure occurred,
the ATA number of the component,
the functional designation of the component,
the FIN of the component.

The screen can show a maximum of two failures at a time. If there are more failures, you must push the next page key on the MCDU keyboard. If there are no failures, NO FAULT DETECTED is shown.

C. CFDS Maintenance Messages

(1) The zone controller 8HK sends failure data collected from the pack controllers 7HH (27HH) and the ventilation controller 10HN as well as those detected by its BITE to the Centralized Fault Display System (CFDS).
A possible failure can be class 1, class 2 or class 3.

A class 1 failure requires immediate maintenance action, as they always lead to a loss of the affected system with operational consequences.
A class 2 failure will not lead to operational consequences but cannot be left uncorrected until the next scheduled maintenance check.
Class 3 failure are failures which can be left uncorrected until the next scheduled maintenance check.
The possible maintenance messages (class 1, 2, 3) provided by the zone controller are shown in the following tables.

(2) Class 1 Maintenance Messages

NOTE: Test is available only if both pack flow-control valves are shown closed on the ECAM BLEED page.

-------------------------------------------------------------------------------

| BITE TEST

|-----------------------------------------------------------------------------|

| INDICATION ON THE MCDU | ATA REF. | BITE DETECTION |

-------------------------------------------------------------------------------

RECIRC FAN 1+2 OR SPLY 21-21-51

GALY & TOIL FAN OR SPLY 21-23-51 FAN ELEC OR MECH FAIL

AFT CARGO FAN OR SPLY 21-28-54 FAN ELEC OR MECH FAIL

P1 AIR CYCLE MACH CHECK 21-61-00 P1 DISCHARGE OVHT, ACM SEIZURE

SUSPECTED

P2 AIR CYCLE MACH CHECK 21-61-00 P2 DISCHARGE OVHT, ACM SEIZURE

SUSPECTED

P1 WATER EX TEMP SENSOR 21-61-13 SENSOR FAULT

P2 WATER EX TEMP SENSOR 21-61-13 SENSOR FAULT

P1 CONT 21-61-34 PRIM CTR WATCH DOG

PRIM CTR RAM

P2 CONT 21-61-34 SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

SEC CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

SEC CTR 429 XTR EX

PRIM CTR 429 RCV 1

PRIM CTR 429 RCV 2

PRIM CTR PWR SUPPLY

PRIM CTR BPV PERMAN. CLOSED

PRIM CTR BYPASS VALVE DRIVE

CTR FCV SET DRIVE

SEC CTR BPV DRIVE

SEC CTR ARINC RCVR 1

SEC CTR ARINC RCVR 2

P1 CONT OR ANTI ICE VALVE 21-61-41 VALVE PERMANENTLY OPEN

P2 CONT OR ANTI ICE VALVE 21-61-41 VALVE PERMANENTLY OPEN

P1 RAM AIR IN ACTUATOR 21-61-51 ACTUATOR MOTOR

ACTUATOR POT 1

P2 RAM AIR IN ACTUATOR 21-61-51 ACTUATOR POT 2

ELEC OR MECH FAIL

P1 RAM AIR OUT ACTUATOR 21-61-52 ACTUATOR LIMIT SWITCH

P2 RAM AIR OUT ACTUATOR 21-61-52 ACTUATOR LIMIT SWITCH

P1 BYPASS VALVE 21-61-53 VALVE MOTOR

VALVE POT 1

P2 BYPASS VALVE 21-61-53 VALVE POT 2

VALVE LIMIT SWITCH

ELEC OR MECH FAIL

ZONE CONT 21-63-34 PRIM CTR WATCH DOG

PRIM CTR RAM

PRIM CTR PWR SPLY

SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

PRIM CTR 429 RCVR

SEC CTR 429 RCVR

SEC CTR CPU

SEC CTR AID CONV

SEC CTR PWR SPLY

PRIM CTR TAV DRIVE

PRIM CTR ARINC XTR BUS1/RCVR ADC

PRIM CTR ARINC XTR PC/RCVR PC RH

SEC CTR ARINC XTR BUS1/RCVR CFDS

SEC CTR ARINC XTR PC/RCVR PC LH

TRIM VALVE AFT CAB 21-63-51 TRIM VALVE ELEC OR MECH FAIL

TRIM VALVE CKPT 21-63-51 TRIM VALVE MOTOR

TRIM VALVE FWD CAB 21-63-51 TRIM VALVE POT 1

TRIM VALVE POT 2

TRIM AIR PRESS VALVE 21-63-52 VALVE SOLENOID REDUCE

VALVE DISAGREE FAILED CLOSED

NO BLEED AIR ENG 1 30-11-00

NO BLEED AIR ENG 2 30-11-00

WAI:NO BLEED AIR ENG 1 30-11-00

WAI:NO BLEED AIR ENG 2 30-11-00

L WAI VALVE 30-11-51

LH WAI FILTER OR VALVE 30-11-51

R WAI VALVE 30-11-51

RH WAI FILTER OR VALVE 30-11-51

(3) Class 2 Maintenance Messages

-------------------------------------------------------------------------------

| BITE TEST

|-----------------------------------------------------------------------------|

| INDICATION ON THE MCDU | ATA REF. | BITE DETECTION |

-------------------------------------------------------------------------------

FLOW SEL 21-51-00 SELECTOR FAULT

P1 FLOW CTL VALVE 21-51-51 VALVE FAULT

P2 FLOW CTL VALVE 21-51-51 VALVE FAULT

P1 FLOW SENSOR 21-51-11 SENSOR FAULT

P2 FLOW SENSOR 21-51-11 SENSOR FAULT

NO 28V ON PACK 1 MAIN 21-61-00 NO 28VDC SUPPLIED

NO 28V ON PACK 1 SECD 21-61-00 NO 28VDC SUPPLIED

NO 28V ON PACK 2 MAIN 21-61-00 NO 28VDC SUPPLIED

NO 28V ON PACK 2 SECD 21-61-00 NO 28VDC SUPPLIED

P1 COMP TEMP SENSOR 21-61-11 SENSOR FAULT

P2 COMP TEMP SENSOR 21-61-11 SENSOR FAULT

P1 COMP OVHT SENSOR 21-61-12 SENSOR FAULT

P2 COMP OVHT SENSOR 21-61-12 SENSOR FAULT

P1 WATER EX TEMP SENSOR 21-61-13 SENSOR FAULT

P2 WATER EX TEMP SENSOR 21-61-13 SENSOR FAULT

P1 OUT TEMP SENSOR 21-61-15 SENSOR FAULT

P2 OUT TEMP SENSOR 21-61-15 SENSOR FAULT

P1 CONT 21-61-34 PRIM CTR WATCH DOG

PRIM CTR RAM

P2 CONT 21-61-34 SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

SEC CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

SEC CTR 429 XTR EX

PRIM CTR 429 RCV 1

PRIM CTR 429 RCV 2

PRIM CTR PWR SUPPLY

PRIM CTR BPV PERMAN. CLOSED

PRIM CTR BYPASS VALVE DRIVE

CTR FCV SET DRIVE

SEC CTR BPV DRIVE

SEC CTR ARINC RCVR 1

SEC CTR ARINC RCVR 2

P1 BYPASS VALVE 21-61-53 VALVE MOTOR

VALVE POT 1

P2 BYPASS VALVE 21-61-53 VALVE POT 2

VALVE LIMIT SWITCH

ELEC OR MECH FAIL

NO 28V ON ZONE MAIN 21-63-00 NO 28VDC SUPPLIED

NO 28V ON ZONE SECD 21-63-00 NO 28VDC SUPPLIED

AFT CAB TEMP SEL 21-63-11 SELECTOR FAULT

CKPT TEMP SEL 21-63-11 SELECTOR FAULT

FWD CAB TEMP SEL 21-63-11 SELECTOR FAULT

TEMP SENSOR AFT CAB DUCT 21-63-15 SENSOR 1 OR 2

TEMP SENSOR CKPT DUCT 21-63-15 SENSOR 1 OR 2

TEMP SENSOR FWD CAB DUCT 21-63-15 SENSOR 1 OR 2

TEMP SENSOR L/H MIXER 21-63-16 SENSOR 1 OR 2 FAULT

TEMP SENSOR R/H MIXER 21-63-16 SENSOR 1 OR 2 FAULT

TEMP SENSOR AFT CAB 21-63-17 SENSOR 1 OR 2

TEMP SENSOR CKPT 21-63-17 SENSOR 1 OR 2

TEMP SENSOR FWD CAB 21-63-17 SENSOR 1 OR 2

ZONE CONT 21-63-34 PRIM CTR WATCH DOG

PRIM CTR RAM

PRIM CTR PWR SPLY

SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

PRIM CTR 429 RCVR

SEC CTR 429 RCVR

SEC CTR CPU

SEC CTR AID CONV

SEC CTR PWR SPLY

PRIM CTR TAV DRIVE

PRIM CTR ARINC XTR BUS1/RCVR ADC

PRIM CTR ARINC XTR PC/RCVR PC RH

SEC CTR ARINC XTR BUS1/RCVR CFDS

SEC CTR ARINC XTR PC/RCVR PC LH

ZONE CONT OR 21-63-34

SENSOR SUPPLY SHORT

TRIM VALVE AFT CAB 21-63-51 TRIM VALVE ELEC OR MECH FAIL

TRIM VALVE CKPT 21-63-51 TRIM VALVE MOTOR

TRIM VALVE FWD CAB 21-63-51 TRIM VALVE POT 1

TRIM VALVE POT 2

TRIM AIR PRESS VALVE OR 21-63-52 HIGH HOT AIR PRESSURE

PRESS SWITCH

NO DATA FROM CFDS 31-32-34 CFDS DATA LOSS

NO DATA FROM ADIRS 34-12-34 ADIRS DATA LOSS

(4) Class 3 Maintenance Messages

-------------------------------------------------------------------------------

| BITE TEST

|-----------------------------------------------------------------------------|

| INDICATION ON THE MCDU | ATA REF. | BITE DETECTION |

-------------------------------------------------------------------------------

RECIRC FAN 1 OR SPLY 21-21-51 FAN OVHT

RECIRC FAN 2 OR SPLY 21-21-51 FAN ELEC OR MECH FAIL

P1 FLOW SENSOR 21-51-11 PACK FLOW SENSOR FAULT

P2 FLOW SENSOR 21-51-11 PACK FLOW SENSOR FAULT

MIXER FLAP DRIVE OR SPLY 21-51-52 MIXER FLAP DISAGREE

P1 PIN PROGRAM MISMATCH 21-61-00

P2 PIN PROGRAM MISMATCH 21-61-00

P1 OUT TEMP SENSOR 21-61-15 SENSOR FAULT

P2 OUT TEMP SENSOR 21-61-15 SENSOR FAULT

P1 PRESS INL SENSOR 21-61-16 SENSOR FAULT

P2 PRESS INL SENSOR 21-61-16 SENSOR FAULT

P1 BLEED TEMP SENSOR 21-61-17 SENSOR FAULT

P2 BLEED TEMP SENSOR 21-61-17 SENSOR FAULT

P1 CONT 21-61-34 PRIM CTR WATCH DOG

PRIM CTR RAM

P2 CONT 21-61-34 SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

SEC CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

SEC CTR 429 XTR EX

PRIM CTR 429 RCV 1

PRIM CTR 429 RCV 2

PRIM CTR PWR SUPPLY

PRIM CTR BPV PERMAN. CLOSED

PRIM CTR BYPASS VALVE DRIVE

CTR FCV SET DRIVE

SEC CTR BPV DRIVE

SEC CTR ARINC RCVR 1

SEC CTR ARINC RCVR 2

P1 CONT OR ANTI ICE VALVE 21-61-41 VALVE PERMANENTLY OPEN

P1 RAM AIR IN ACTUATOR 21-61-51 ACTUATOR MOTOR

ACTUATOR POT 1

P2 RAM AIR IN ACTUATOR 21-61-51 ACTUATOR POT 2

ELEC OR MECH FAIL

P1 RAM AIR OUT ACTUATOR 21-61-52 ACTUATOR LIMIT SWITCH

P2 RAM AIR OUT ACTUATOR 21-61-52 ACTUATOR LIMIT SWITCH

ZC PIN PROGRAM MISMATCH 21-63-00

ZONE CONT 21-63-34 PRIM CTR WATCH DOG

PRIM CTR RAM

PRIM CTR PWR SPLY

SEC CTR RAM

PRIM CTR EPROM

SEC CTR EPROM

PRIM CTR CPU

PRIM CTR A/D CONVERTER

PRIM CTR DISCR INPUT

SEC CTR DISCR INPUT

PRIM CTR DISCR OUTPUT

SEC CTR DISCR OUTPUT

PRIM CTR 429 RCVR

SEC CTR 429 RCVR

SEC CTR CPU

SEC CTR AID CONV

SEC CTR PWR SPLY

PRIM CTR TAV DRIVE

PRIM CTR ARINC XTR BUS1/RCVR ADC

PRIM CTR ARINC XTR PC/RCVR PC RH

SEC CTR ARINC XTR BUS1/RCVR CFDS

SEC CTR ARINC XTR PC/RCVR PC LH

P2 CONT OR ANTI ICE VALVE 21-63-41

TRIM VALVE AFT CAB 21-63-51 TRIM VALVE ELEC OR MECH FAIL

TRIM VALVE CKPT 21-63-51 TRIM VALVE MOTOR

TRIM VALVE FWD CAB 21-63-51 TRIM VALVE POT 1

TRIM VALVE POT 2

TRIM AIR PRESS VALVE 21-63-52 VALVE SOLENOID REDUCE

VALVE DISAGREE FAILED CLOSED

WAI FILTER OR VALVE 10DL 30-11-51

WAI FILTER OR VALVE 9DL 30-11-51

NO BLEED AIR ENG 1 36-11-00

NO BLEED AIR ENG 2 36-11-00

[Rev.10 from 2021] 2026.04.01 04:52:36 UTC