Group Control (Optional Wiring) - LG CEILING CASSETTE TYPE AIR CONDITIONERS Installation Instructions Manual

3) Group Control(Optional Wiring)
• You can use a group control operation after connecting the brown and yellow wire of each
air-conditioner.
• Remove the resistor "OP 7" in remote controller.
• It operates maximum 16 Units by only one Wired Remote Controller,
and each Unit starts sequentially to prevent overcurrent.
Wiring design
Indoor Unit 1
Terminal(Local Supply)
Block
RED(12V) RED(12V)
YL(SIGNAL) YL(SIGNAL)
BR(GND) BR(GND)
AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
Room Temp
HI AUTO Heater Preheat
MED JET Defrost Humidify
LO Filter Out door
Time ZONE 1 2 3 4
Timer Operation unit Program set
On Off
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
Wired Remote Controller
Features
• Use Only One Wired Remote Controller with several air conditioners(max. 16 Units)
• Random starting to prevent overcurrent.
CAUTION
• Be careful not to exchange the color of wires.
• The maximum length of connecting wire should be below 200m(25Ω) on connecting each units.
• Use a wire more than 0.5mm
Terminal(Local Supply)
Block
Connector
Main PCB
YL(SIGNAL)
YL(SIGNAL)
#1 BR(GND)
BR(GND)
2
19
Main PCB Main PCB
Indoor Unit 2
Connector
Main PCB
YL(SIGNAL)
....
#2 BR(GND)
Connecting Cable(Local Supply)
....
Slide Switch
OP7
Remote
Controller
PCB
Indoor Unit 16
Terminal(Local Supply)
Block
Connector
Main PCB
YL(SIGNAL)
#16
BR(GND)