LG PQNFB17C1 Installation & Owner's Manual page 20

INSTALLING ACP BACnet
10
• RS-485 communication cable connection
- There is a polarity in RS-485 communication cable connection, so be careful not to reverse
the connection of the two cables.
- Do not let the length of RS-485 communication cable exceed total of 1 km.
- RS-485 communication cable must be connected with BUS type.
IP address of the ACP BACnet
- IP address of the ACP BACnet, address of Gateway, and Net mask must be requested to the
person in charge of the network of the corresponding site.
Caution
RS-485 Connection of the ERV equipment
To connect ERV equipment, it is recommended to use the ports other than RS-485
communication ports which are connected to air conditioners.