LG PACS4B000 Installation & Owner's Manual page 23

4.
Connect the RS485 cable,which is located behind the AC Smart IV, to the RS485 terminal.
CAUTION
The RS485 cable is polarity sensitive, be careful about keeping polarity when connecting the
cables.
5.
To use the network functions (email transmission and web control) provided by AC Smart IV,
connect an Ethernet cable to the LAN port on the back of AC Smart IV.
PREPARATION
A B A B
ODU
AHU (RS485)
15