LG ATNH126ELFC Service Manual page 81

INSTALLATION ORDER
1.
Remove upper & lower case.
4.
For wiring connection, refer page
"Installation Procedure"
LINK OF CONNECTING WIRE
1.
First, separate the front case from rear case of controller, connect terminal
C, D,Vcc, GND on PCB referring to the following table.
Maximum length of connecting wire
• Between controller and outdoor unit : 220m(25Ω
• Between controllers : 220m(25Ω
Out door unit Terminal Block
GND
Vcc
C
D
2.
After attaching the supplied wire to terminal, link the connecting wire.
If necessary, Cut the indicated part of front case to draw the lead wire.
2.
Fixate screw in the holes of the
case bottom.
5.
Adjust the upper case in accor-
dance with back case while
assembling as shown in the fig-
ure.
)
)
Wire Color Central Control Terminal
BLUE
Red
Brown
Yellow
Control Devices and Function
3.
For Dip switch, and Rotary
switch setting, refer to the page
"How to Install".
6.
Check the operation by supply-
ing the power.
Vcc
GND
Vcc
C
D
GND
D
C
Service Manual 81