Setting The Pi485 And Connecting The Cable - LG PQNFB17C0 Installation & Owner's Manual

14
INSTALLING ACP BACnet

Setting the PI485 and connecting the cable

After setting the address of the indoor unit, install the PI485 and set the DIP switch.
And then, connect the RS485 cable for communication with the ACP BACnet.
Notes
Installing the PI485
Installing the PI485 depends on the outdoor unit.
y
So, install the PI485 by referring to the PI485 manual or the installation technique information.
y
To connect PI485 and the ACP BACnet, two RS-485 cables need to be connected to BUS-A and
BUS-B of PI485. Connect RS-485 cable by referring to the following figure.
If several PI485 are connected to each other to be connected to one ACP BACnet, connect each
BUS-A and BUS-B of PI485 to be connected to BUS-A and BUS-B of another PI485.