How To Install - System Diagram - LG BNU-BAC Installation & Owner's Manual

How to install
How to install
System diagram
Installation specification
• 256 indoor units at maximum / 1 BACnet Gateway
• Total 256 units(Indoor unit/Vent/DXHRV/AHU) at maximum / 1 BACnet Gateway
• RS-485 ports 4 / 1 BACnet Gateway
• 64 PI485 units at maximum / 1 RS-485 port
• 256 indoor units at maximum / 1 RS-485 port. We recommend to connect them divided into 4 ports
for improving the communication performance.
Note: However, when it should be necessary to change the above specification, contact to the LG
System Air Conditioner supporting division.
(1) When connecting the BMS by using one BACnet Gateway
BMS
(Building
Management
System)
Simple central controller
(possible to connect if necessary)
12 BACnet Gateway
Hub
LAN
(direct cable)
TX
LG-NET 1
RX
TX
LG-NET 2
RX
1
DI TX
2 LG-NET 3
RX
3
TX
4 LG-NET 4
RX
5
6
7
TX
8 Ext 1
RX
9
TX
10 Ext 2
RX
11
12
13
14 ACT
15 Ethernet 1
LNK
16
MENU/
17 ACT
SELECT Ethernet 2
18 LNK
19
20
TX
Console
RX
1
DO Run
2
3
4 Power
PI485
BACnet Gateway
PI485
PI485
PI485
Multi V
ON KSDO4H
L1 2 3 4
Multi V
ON KSDO4H
L1 2 3 4
Multi V
ON KSDO4H
L1 2 3 4
Multi
ON KSDO4H
L1 2 3 4
01 . . . . . . . .
00
. . . . . . . .
10 11
. . . . . . . .
20 21
F0
F1
F2
F3
0F
1F
2F