LG PQCPA11A0E Installation & Owner's Manual page 32

2. Installing ACP
Tip: Connection setup when using the simple central controller together with the ACP
The simple central controller can be used with the ACP. Connect the simple central controller to the
ACP as follows:
Note: Checking the LGAP Label
Check the LGAP Label at the right side of the case of the simple central controller. Only the product
with the label can be together connected to the ACP.
The VCC and the GND terminals of the simple central controller should be connected to the wire
from the PI485 or the separate adaptor. For more information, see the manual for the simple central
controller.
1. Connect the BUS-A and the BUS-B ports of the PI485 to the terminals C and D of the simple
central controller by using the RS485 communication cable.
2. Set the rotary switch of the simple central controller to match with the group number of the indoor
unit to be controlled. For example, in order to control the indoor units with the addresses 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 mode).
RS485 RS485 RS485
LED13
+
LED17
2-18
ACP
GND
D
C
LED14
ON KSDO4H
L1 2 3 4
S19
CN-POWER
S2
S1
L
LED2
LED3
IC1P S5
S6
+
+ +
+
LED7
LED5
S10
S9
+ +
+
LED9
LED11
LED10
S14 +
+
+
LED13 LED15
LED14
PWB:6870A10001A
ASM:6711A20005E
S15
+
LED17 ON KSDO4H
L1 2 3 4
S19
CN-POWER
GND
CN-COM B
CN-COM A
S4
LED4
S3
+
LED8
TX1
S11 S12
LED12
S16
S15
+
LED16
S18