Check Points During The Acp Installation - LG V-NET PQCPC22N0 Installation & User Manual

Installing ACP
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Check points during the ACP installation

- The number of PI485 connected to one RS-485 communication line
ACP 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/ventilation can be connected.
- The number of the indoor units that can be connected to one ACP
One ACP can be connected up to 256 indoor units. To one RS-485 port, all of 256 indoor units,
which is the maximum number that can be connected to the ACP, may be connected.
But, to improve the communication performance of RS-485, it is recommended to be divided
and connected to 4 ports.
- 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
IP address of the ACP, 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 ventilation equipment
• To connect ventilation equipment, it is recommended to use the ports other than RS-
485 communication ports which are connected to air conditioners.