En-9
6.3.2. Transmission and Remote controller cable
Transmission cable Remote controller cable
Shield cable
(no film)
1 in (25 mm)
1-3/8 in (35 mm)
1 in (25 mm)
• Connect remote controller and transmission cables as shown in Fig. B.
• When the 2 cables are attached.
Fig. B
GOOD PROHIBITED
Different diameter Connect to 1 side
WARNING
Tighten the terminal screws to the specified 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)
4.4 to 5.3 lbf·in
(0.5 to 0.6 N·m)
CAUTION
To peel the film 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 under tightened 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.
(2) After wiring is complete,
clamp the remote con-
troller cable, connection
cable and power supply
cable with cable clamp.
Loosen the
screws
(5 locations)
Control box
cover
Conduit (L1, L2 (N):
Power supply cable)
X1, X2:
Transmission cable
Cable tie (medium)
(accessories)
Y1, Y2:
Remote controller
cable
Earth (Ground)
Lock nut
(3) Attach the control box cover.
● Fix the conduit with the supporters as shown below.
Conduit (power supply cable)
Supporter
Indoor unit
30 in
(756 mm)
or less
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
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 output
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)
9365748336-01_IM.indb Sec1:99365748336-01_IM.indb Sec1:9 9/16/2019 1:14:20 PM9/16/2019 1:14:20 PM
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