En-12
WARNING
Tighten the terminal screws to the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Terminal number
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 cover.
(2) Connect the connection cable.
Cover
Screw
GND
L, N: Power supply cable
X1, X2: Transmission cable
Y1,Y2: Remote
controller cable
Cable clamp
Cable tie (Medium)
(Accessories)
Avoid covering the air
inlet with the wiring.
Avoid touching the ceiling with the wiring
Ceiling
Power supply
cable
Do not bind the power supply cable and other cables together.
6.5. Optional parts wiring
6.5.1. Layout of the indoor unit PCB
CN8
CN155
CN820
CN65
CN48
SW1 SW2 SW3 SW4
CNB01
CNA01
CNA03
CNA02
CNA04
Controller PCB
OFF
ON
DIP switch
(SET 2)
Power indicator
lamp (green)
Name
Application
Power indicator
lamp (green)
Indicates the state of the power supply. Refer to “Power indicator
lamp status” following.
CN150
Connect to the Grille. (*1)
CN151
CN152
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)
CN155
For Auto louver grille kit (*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.
6.4.2 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)
9374342549_IM.indb 12
9374342549_IM.indb 12
2/15/2019 5:46:07 PM
2/15/2019 5:46:07 PM
