En-9
WARNING
Tighten the terminal screws to the speci
fi
ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Tightening torque
M3 screw (Transmission/X1, X2)
(Remote controller/ Y1, Y2)
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
CAUTION
To peel the
fi
lm from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
6.4. Connection of wiring
(1) Remove the control box cover and install each connection cable.
Loosen the screws
(5 locations)
Control box cover
(2) After wiring is complete, clamp the remote controller cable, connection cable and
power supply cable with cable clamp.
L, N:
Power supply cable
X1, X2:
Transmission cable
Cable tie (Medium)
(Accessories)
Y1, Y2:
Remote controller
cable
Earth (ground)
Cable clamp
CAUTION
When installing a screw on the terminal board, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact,
which will lead to a communication failure.
(3) Attach the control box cover.
6.5. Optional parts wiring
6.5.1. Layout of the indoor unit PCB
CN8
CN820
CN65
CN48
SW1
SW2
SW3
SW4
CNB01
CNA01 CNA03
CNA02
CNA04
Power indicator
lamp (green)
OFF ON
DIP switch
(SET 2)
Name
Application
Power indicator
lamp (green)
Indicates the state of the power supply. Refer to “Power indicator
lamp status” following.
CNA01
Apply voltage terminal
For external input
CNA03
CNA02
Dry contact terminal
CNA04
DIP switch SET 2
(SW2)
Input signal type switching
CNB01
Output terminal
For external outnput
CN8
For Remote sensor unit (*1)
CN48
For IR receiver unit (*1)
CN65
For one of the following.
• MODBUS® convertor (*1)
• Wireless LAN adapter (*1)
CN820
For External power supply unit (*1)
*1: For details, refer to each installation manual.
6.5.2. Power indicator lamp status
Power indicator lamp (Green)
Status contents
Lit
Lit when the power is turned on.
Fast flashing (every 0.1
second)
There is a fault with the communication board or the
main board.
Blinking (repeat 3 seconds ON
and 1 second OFF)
The indoor unit is turned off and power is supplied
from the External power supply unit (optional) to the
indoor unit PCB.
6.5.3. Connection methods
Wire modification for External
input/output wire
(1) Remove insulation from wire at-
tached to wire kit connector.
(2) Remove insulation from field
supplied cable. Use crimp type
insulated butt connector to join field
cable and wire kit wire.
(3) Connect the wire with connecting
wire with solder.
IMPORTANT:
Be sure to insulate the connection between the
wires.
Locally
purchased
Solder and insulate the connected parts.
Wire kit connector
(optional parts)
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9365748329-01_IM.indb 9
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2/21/2019 1:51:41 PM
