Check Points During The Acp Bacnet Installation - LG BECON HVAC BACnet PQNFB17C1 Installation & User Manual

8
INSTALLING ACP BACnet
Caution
Installing the ACP BACnet
The ACP BACnet installation work needs the professional technique. Therefore, the installation
y
described in this chapter should be performed by the certified installation professional.
Consult the service center or the professional installation agency certified by us about any
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question or request related to the installation.

Check points during the ACP BACnet installation

• The number of PI485 connected to one RS-485 communication line
- ACP BACnet provides 4 RS-485 ports for indoor unit connection. (CH 1~4)
- Up to 16 PI485 for outdoor unit can be connected to one RS-485 port, and up to 31 PI485 for
- SINGLE/ERV can be connected.
• The number of the indoor units that can be connected to one ACP BACnet
One ACP BACnet can be connected up to 256 indoor units. With ACS I/O interlocking, you can
connect 128 indoor units and 16 I/O modules. And with chiller interlocking, you can connect
128 indoor units and 10 chiller units.
But, to improve the communication performance of RS-485, it is recommended to be divided
and connected to 4 ports.
To one RS-485 port, all of 256 indoor units, which is the maximum number that can be
connected to the ACP BACnet, may be connected.