LG AC Smart Installation And Owner's Manual page 28

2. AC Smart Installation
Information: Connection setting when using simple central
You can use a simple central controller with AC Smart. When you want to use a simple central
controller with AC Smart, connect the simple central controller in the order shown as follows.
Reference: Check LGAP Label
Check the LGAP Lbel on the right side of the case of the simple central controller. ACP can
be simultaneously connected only to the product with the label.
You must connect the VCC and GND terminal of the simple central controller to connection of
PI485 or to a separate adapter. For more details, refer to the manual of the simple central
controller.
1
. Connect the BUS-A and BUS-B port of PI485 to the C and D terminal of the simple central
controller using the RS485 communication cable.
2
. Set the rotary switch of the simple central controller to align with the group number of the
indoor unit to control. For example, when you want to control the indoor units with the address
of 00~ 0F, set the rotary switch to 0.
3
. Set the DIP switch No. 1 of the simple central controller to OFF (Slave) and No. 2 to ON (LGAP
use mode).
ON
L1 2 3 4
2-13
AC Smart
controller with AC Smart
RS485
GND
D
C
IC1P
Rotary
Switch
KSDO4H
DIP
Switch
CN-POWER
S2
S1
L
LED2
LED3
S5
S6
+
+
+
+
LED7
LED5
S10 S11
S9
+
+
+
LED9
LED10 LED11
S14
+
+ +
LED13
LED14 LED15
PWB:6870A10001A
ASM:6711A20005E
S15
+
ON KSDO4H
LED17
L1 2 3 4
S19
CN-POWER
GND
CN-COM B
CN-COM A
S4
LED4
S3
+
LED8
TX1
S12
LED12
S16
S15
+
LED16
S18