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A. Current breaker requirements

Model

MCA

MAX. CKT. BKR 

(Fuse capacity)

• MCA: Minimum Circuit Ampacity
• MAX. CKT. BKR: Maximum Circuit 

Breaker

When the power crossover wiring is 
done, make it so that the total of the 
MCA of the connected RB units and 
indoor units does not exceed the 11 A. 
For RB unit MCA, refer to the RB unit 
installation manual.
If the capacity of connected RB units 
and indoor units exceeds the upper 
limit, either add breakers or use a 
breaker with a greater capacity.

AUUA4TLAV2

0.29 A

15 A

AUUA7TLAV2

0.51 A

AUUA9TLAV2

0.51 A

AUUA12TLAV2

0.51 A

AUUA14TLAV2

0.51 A

AUUA18TLAV2

0.51 A

AUUA24TLAV2

0.78 A

B. Ground Fault Equipment Breaker requirements

Breaker capacity

Maximum connect-
able “indoor units” 

or “indoor units + 

RB units” (*1)

*1:  Heat pump type: indoor units, 

Heat recovery type: indoor units 
and RB units.

*2:  If the 100 mA capacity breaker is 

not provided, split the quantity of 
the indoor units into small groups 
of 36 units or less and provide a 
breaker with capacity of 30 mA for 
each group.

30 mA, 0.1 sec or less

36 or less

100 mA, 0.1 sec or less

37 to 121 (*2)

6.1.1. Cable specifications

Use

Cable size

(AWG)

Cable type

Remarks

Transmission 
cable

22

LEVEL 4 (NEMA) non-polar 2 core, 
twisted pair solid core diameter 
0.026 in (0.65 mm)

LONWORKS® 
compatible cable

Remote con-
troller cable 
(2-wire type)

22 to 16

Sheathed PVC cable

Non polar 2 core, 
twisted pair

18

Thermostat cable 2 core

Use sheathed non 
twisted pair cable

6.2.  Wiring method

Example

*2

*2

*2

Outdoor unit or RB unit *1

Breaker 1:  Ground Fault Equipment 

Breaker (GFEB)

Breaker 2:  Maximum Circuit Breaker 

(MAX. CKT. BKR)

Transmission

Transmission

Indoor unit

Remote controller 

(Master)

Power supply

Indoor unit

Indoor unit

Power supply

Remote 
 control

Breaker 2

Breaker 2

Breaker 2

Breaker 1

Breaker 1

Breaker 1

Remote controller 

(Slave)

Remote 

controller

*1:  When connecting to the Heat Recovery System, refer to the installation manual of the 

RB unit.

*2:  The 3-wire type remote controller is not used.

Indoor unit

Power supply

Pull box

Pull box

Breaker2

Breaker1

Power supply

Power supply

Power supply

: Disconnect switch

Indoor unit

Indoor unit

(Crossover wiring of power supply)

Disconnect switch shall be installed between indoor unit and pull box.

6.3.  Unit wiring

Before attaching the cable to terminal block.

6.3.1. Power supply cable

Adjust the length of power supply cable to avoid excessive tension with referring figure 
below.

Conduit connector

Earth (Ground) 
wire

2-3/4 in (70 mm)

1-3/4 in (45 mm)

A. For solid core wiring

(1)  To connect the electrical terminal, follow the below diagram and connect after looping 

it around the end of the cable. 

(2)  Use the specified cables, connect them securely, and fasten them so that there is no 

stress placed on the terminals.

(3)  Use an appropriate screwdriver to tighten the terminal screws. 
(4)  Do not use a screwdriver that is too small, otherwise, the screw heads may be dam-

aged and prevent the screws from being properly tightened.

(5)  Do not tighten the terminal screws too much, otherwise, the screws may break.
(6)  See the table for the terminal screw tightening torques.
(7)  Please do not fix 2 power supply cables with 1 screw.

Strip 1 in 
(25 mm)

Loop

Screw with 
special washer

Screw with 
special washer

Cable end (Loop)

Cable end (Loop)

Cable

Cable

Terminal block

 WARNING

When using solid core cables, do not use the ring terminal. If you use the solid core 
cables with the ring terminal, the ring terminal's pressure bonding may malfunction and 
cause the cables to abnormally heat up.

B. For strand wiring

(1)  Use ring terminals with insulating sleeves as shown in the figure below to connect to 

the terminal block.

(2)  Securely clamp the ring terminals to the cables using an appropriate tool so that the 

cables do not come loose.

(3)  Use the specified cables, connect them securely, and fasten them so that there is no 

stress placed on the terminals.

(4)  Use an appropriate screwdriver to tighten the terminal screws.
(5)  Do not use a screwdriver that is too small, otherwise, the screw heads may be dam-

aged and prevent the screws from being properly tightened.

(6)  Do not tighten the terminal screws too much, otherwise, the screws may break.
(7)  See the table for the terminal screw tightening torques.
(8)  Please do not fix 2 power supply cables with 1 screw.

Strip 3/8 in
(10 mm)

 Sleeve

Screw with 
special washer

Screw with 
special washer

Ring terminal

Cable

Cable

Terminal block

Ring terminal

Ring terminal

 WARNING

Use ring terminals and tighten the terminal screws to the specified torques, otherwise, 
abnormal overheating may be produced and possibly cause heavy damage inside the 
unit.

Tightening torque

M4 screw (Power supply /L1, L2 (N), GND)

11 to 16 lbf·in (1.2 to 1.8 N·m)

9371022659-02_L3.indb   Sec1:7

9371022659-02_L3.indb   Sec1:7

9/24/2019   11:10:55 AM

9/24/2019   11:10:55 AM

Summary of Contents for AirStage AUUA12TLAV2

Page 1: ... AUUA7TLAV2 AUUA9TLAV2 AUUA12TLAV2 AUUA14TLAV2 AUUA18TLAV2 AUUA24TLAV2 INSTALLATION MANUAL For authorized service personnel only MANUEL D INSTALLATION MANUAL DE INSTALACIÓN Pour le personnel agréé uniquement Únicamente para personal de servicio autorizado 9371022659 02_L3 indb 1 9371022659 02_L3 indb 1 9 24 2019 11 10 53 AM 9 24 2019 11 10 53 AM ...

Page 2: ...s and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced After installation explain correct operation to the customer using the operating manual DANGER Never touch electrical components immediately after the power supply has been turned off Electrical shock may occur After ...

Page 3: ...following installation parts are furnished Use them as required Keep the Installation Manual in a safe place and do not discard any other accessories until the installation work has been completed Do not discard any accessories needed for installation until the installation work has been completed Name and Shape Q ty Application Operating manual 1 Installation manual 1 This book Cable tie large 4 ...

Page 4: ... where the drain pipe can be easily installed 8 Install the unit where noise and vibrations are not amplified 9 Take servicing etc into consideration and leave the spaces Also install the unit where the filter can be removed 3 2 Installation dimensions Leave the space specified in Fig A so that the air from the blower will cover the entire room Install the indoor unit on a place having a sufficien...

Page 5: ...o choose adequate materials Thicknesses of copper pipes used with R410A are as shown in the table Never use copper pipes thinner than those indicated in the table even if they are avail able on the market Thicknesses of Annealed Copper Pipes R410A Pipe outside diameter in mm Thickness in mm 1 4 6 35 0 032 0 80 3 8 9 52 0 032 0 80 1 2 12 70 0 032 0 80 5 8 15 88 0 039 1 00 3 4 19 05 0 039 1 20 4 2 P...

Page 6: ... side After installing the coupler heat insula tion wrap both end with vinyl tape so that there is no gap After affixing the coupler heat insula tion secure it with 2 cable ties large one on each end of the insulation Make sure that the cable ties overlap the heat insulation pipe Coupler heat insulation accessories Cable tie large accessories Heat insulation Heat insu lation Cover this portion wit...

Page 7: ...ic parts Securely connect the connection cables to the terminal board In addition secure the cables with wiring holders Improper connections either in the wiring or at the ends of the wiring can cause a malfunction electric shock or fire Always fasten the outside covering of the connection cable with the cable clamp If the insulator is chafed electric discharge may occur We suggest installing GFEB...

Page 8: ...6 3 1 Power supply cable Adjust the length of power supply cable to avoid excessive tension with referring figure below Conduit connector Earth Ground wire 2 3 4 in 70 mm 1 3 4 in 45 mm A For solid core wiring 1 To connect the electrical terminal follow the below diagram and connect after looping it around the end of the cable 2 Use the specified cables connect them securely and fasten them so tha...

Page 9: ...and install each connection cable Screw Control box cover 2 Connect the connection cable with the cable tie Conduit connector L1 L2 N Power supply cable Y1 Y2 Remote controller cable Cable tie medium accessories X1 X2 Transmission cable Attach the conduit connector Lock nut Earth Ground 3 Install control box cover 4 Fix the conduit with the supporters as shown below Conduit power supply cable Supp...

Page 10: ...ad resistance DC power supply 12 to 24 V Connected unit P C B 1 Make the power supply DC 12 to 24 V Select a power supply capacity with an ample surplus for the connected load Do not impress a voltage exceeding 24 V across pins 1 2 and 1 3 a The allowable current is DC 5 mA to 10 mA Recommended DC 5 mA Provide a load resistance such that the current becomes DC 10 mA or less Select very low current...

Page 11: ... For the fan setting details see the Design Technical Manual ON ON 7 FIELD SETTING There are 3 methods for address setting by FIELD SETTING as follows Set by either of the methods Each setting method is described 1 to 3 below 1 IU AD REF AD SW settings This section 7 1 Setting the address 2 Remote controller settings Refer to the wired or wireless remote controller manual for detailed setting info...

Page 12: ...mote controller Code change Indoor unit Remote controller Confusion A B C D A B C D Custom code setting for indoor unit Set the DIP switch SET3 SW1 2 referring to the figure and table below IU AD REF AD RC AD 10 1 10 1 SET3 SET4 DIP switch SET3 SW 1 SW 2 SW 3 SW 4 ON OFF DIP switch SET3 DIP switch SET3 Custom code A Factory setting B C D SW1 OFF ON OFF ON SW2 OFF OFF ON ON 7 3 Function setting FUN...

Page 13: ...03 30 seconds External heater use in defrost ing 4 75 00 Disable Enables or disables the external heater use in defrosting 01 Enable 1 Auto restart is an emergency function such as for power failure etc Do not start and stop the indoor unit by this function in normal operation Be sure to operate by the control unit converter or external input device 2 Inappropriate setting may cause an external de...

Page 14: ...n address 00 to 99 For use with a remote controller set all rotary switches to 0 and refer to 7 1 Setting the address for details All switches are set to 0 at the factory 2 Others Indication pattern Indicator Name Indication pattern OPERATION indicator lamp Green Function number tens place 0 5s ON 0 5s OFF TIMER indicator lamp Orange Function number ones place 0 5s ON 0 5s OFF FILTER indicator lam...

Page 15: ...t and stop air conditioner op eration by remote control unit or external device No operation After installation is completed has the proper operation and handling been explained to the user 11 ERROR CODES If you use a wired type remote controller error codes will appear on the remote controller display If you use a wireless remote controller the lamp on the photodetector unit will output error cod...

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