Wiring Method - Fujitsu AirStage AJ 040LBLDH Series Installation Manual

Fig. 2
NS 1
Outdoor unit
Indoor unit
Terminal resistor
Transmission line
Signal amplifier
NS 2
Terminal resistor
6.4.3 Enabling/Disabling automatic address setting
You can enable/disable automatic address setting for the indoor unit and the signal ampli-
fier.
To enable automatic address setting for the indoor unit, connect the indoor unit to outdoor
units under the same refrigerant system.
Example:
Disable Automatic
Refrigerant
Address setting
system 1
Refrigerant
system 2
Refrigerant
system 3
Example:
Enable Automatic Refrigerant
system 1
Address setting
Refrigerant
system 2
Refrigerant
system 3

6.5. Wiring method

6.5.1 Connection diagrams
The wiring example for outdoor and indoor units is shown in figure.
AJ*040/045/054LBLDH model
Power supply: 230V 1Φ 50Hz
L N
Breaker
Outdoor
L N
unit
Power supply
Transmission
Indoor unit
Transmission Transmission
Remote control
Power supply Power supply
*1 *1
*2
Breaker Breaker
Power supply Power supply
Remote
230V 1Φ 50 Hz controller 230V 1Φ 50 Hz
(2-wire)
En-9
NOTES:
Do not use loop wiring. This
may lead to parts damage and
erroneous operation.
Touch
panel
controller
System
controller
Transmission line
Transmission line
Transmission line
Transmission line
Transmission line
Transmission line
Breaker:
(1) Earth leakage circuit breaker
(2) Current breaker (over current)
To other refrigerant circuit outdoor unit
Indoor unit
Transmission
Remote control
Power supply
*1
Breaker
*2
Power supply
Remote
controller 230V 1Φ 50 Hz
(2-wire)
AJ*040/045/054LELDH model
Power supply: 400V 3Φ 50 Hz
Outdoor
unit
Power supply
Transmission
Transmission
Power supply
*1
Breaker
Power supply
230V 1Φ 50 Hz
*1: The number of power supply terminals is different depending on the indoor unit
model. For the wiring, refer to the indoor unit installation manual.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
* There are two types of remote controller: the 2-wire type and the 3-wire type. For
details, see the relevant remote controller installation manual. (When connecting the
2-wire type remote controller, Y3 is not used.)
6.5.2 Wiring procedure
• Remove the service panel. And connect the cable to the terminal in accordance with the
terminal name plate.
• Use a ring terminal to connect the electric cables to the power supply terminal board.
• Keep the earth cable longer than the other cables.
• After connecting the electric cable, secure them with a cable clamp.
• Connect the cable without applying excessive tension.
• Use the specified cable type and connect the cable securely.
Secure with a cable
clamp as shown in the
figure below.
AJ*040/045/054LBLDH model
Cable tie
Indoor unit
(accessory)
Remote control
Transmission cable
*2
Remote
controller
(3-wire)
Breaker:
(3) Earth leakage circuit breaker
L1 L2 L3 N
(4) Current breaker (over current)
Breaker
L1 L2 L3 N
To other refrigerant circuit outdoor unit
Indoor unit Indoor unit
Transmission
Remote control Remote control
Power supply
*1
*2
Breaker
*2
Remote Power supply Remote
230V 1Φ 50 Hz
controller controller
(2-wire) (2-wire)
M3 screw
Tightening
torque
M5 screw
Transmission terminal (M3)
Cable tie
(accessory)
Cable tie
Power supply
Transmission cable
cable
Indoor unit
Transmission
Remote control
Power supply
*1
*2
Breaker
Power supply Remote
230V 1Φ 50 Hz
controller
(3-wire)
0.5 to 0.6 N·m (5 to 6 kgf·cm)
2.0 to 3.0 N·m (20 to 30 kgf·cm)
Power supply terminal
Cable
clamp
Ring terminal (M5)
Earth (ground)
cable
Power supply cable