En-9
6.4.3. Power entry connection
Lock nut
Conduit
(L1, L2 (N): Power
supply cable)
Earth
(Ground)
Do not bind the power supply cable and other cables together.
6.4.4. Control entry connections
CAUTION
When switching the DIP switch (SW1), be sure to turn off the power supply to the indoor
unit. Otherwise, the PC board of the indoor unit may be damaged.
To protect the cable insulation after opening a knockout hole, remove any burrs from the
edge of the hole.
DIP switch
(SW1)
For 2-wire type
For 3-wire type
Connect the
remote controller
cable
Y1:Non-polar
Y2:Non-polar
Y3:Do not connect *1
Y1:Red
Y2:White
Y3:Black
Set the DIP switch
(SW1)
2WIRE
(Factory setting)
3WIRE
*1: If you connect the remote controller cable to the terminal Y3,
2-wire type remote controller does not work.
Y1, Y2, Y3:
Remote controller
cable
X1, X2:
Transmission cable
Cable tie (Medium) (Accessories)
When using the following optional parts, bind each
connection cable with the transmission and remote
controller cables.
• 6.6 External input and external output (optional parts)
• 6.7 Remote sensor (optional parts)
• 6.8 IR receiver unit (optional parts)
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 Air
fl
ow changing
The outdoor unit static pressure can be changed to high or low by replacing the fan motor
control relay wire.
Connector position
Power supply board
Fan motor control connector
CN 110
FAN CONT.
Relay wire
High
Standard
Low
High
Standard
Low
Fan motor side
Power supply board side
External static pressure and required connector type
Model
External static pressure
[in WG (Pa)]
Connecting connectors
Power board
side
Fan motor
side
ARUV12TLAV
0.7 (175)
High
High
0.5 (125)
Standard
Standard
0.1 (25)
Low
Low
ARUV18/24/30/36/48/60TLAV
0.8 (200)
High
High
0.5 (125)
Standard
Standard
0.1 (25)
Low
Low
(Standard is factory setting)
2WIRE
3WIRE
High
High
Standard
Standard
Low
Low
