LG PAHCMR000 Installation Manual page 33

AHU COMMUNICATIONS KIT INSTALLATION
Multiple Modules Installation
One Air Handling Unit
DDC
Outdoor
Unit
ODU
communication
line
LG
Central
Controller
Multiple Air Handling Units
DDC
Outdoor
Unit
ODU
communication
line
LG
centralized
controller
Notes:
1. Central control address '02:XX' can be set to any number in the range 00 ~ FF.
Contact or modbus signal line
Return air
sensor
Pipe in & out
sensor
RA temp.
controller
<Master>
02:XX
Remote
Notes:
Controller
1. Central control address '02:XX' can be set to any number in the range 00 ~ FF
L N
Contact or modbus signal line
Return air
sensor
Pipe
in & out
sensor
RA temp. RA temp.
controller controller
<Master> <Master>
02:XX
Remote
Controller
L N
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External Connection Diagrams
IDU communication line
Pipe in & out
sensor
RA temp.
. . .
controller
<Slave>
02:XX
Return air
sensor
Pipe in & out
sensor
. . .
02:XX
Remote
Controller
Pipe in & out
sensor
RA temp.
controller
<Slave>
02:XX
Power line
IDU communication line
Return air
sensor
Pipe in & out
sensor
RA temp.
controller
<Master>
02:XX
Power line
Remote
Controller
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