Group Control - LG PREMTTB101 Owners & Installation Manual

INSTALLATION
138

Group control

• It connects and controls 2 or more air conditioner indoor units(Maximum number of IDU : 16ea)
to one wired remote controller.
※Connect using the group control cable.
Indoor unit 1
Master
RED(12V)
YELLOW(SIG)
BLACK(GND)
OK
① Group control cable (PZCWRCG3): Connect to indoor unit's wired remote controller connector
② Extension cable (PZCWRC1): Connect to No. ① cable and slave indoor unit's wired remote
controller connector
While No. ① cable is connected, connect No. ② cable.
1
NOTE
!
• Connect only GND and signal cable to the indoor unit set as slave. (If power cable is also
connected, it may cause loss of communication)
• Inquiries related to the purchase of the cable shall be directed to the specialized company
and the service center.
Change master/slave of the indoor unit.
- For ceiling cassette and duct product group, change the setting with the indoor unit PCB switch.
Master Slave Slave
GND
Signal cable
12V
Yellow Yellow
Black Red
Signal cable
GND
OK
Indoor unit Main PCB
Indoor unit 2 Indoor unit 3
Slave Slave
YELLOW(SIG) YELLOW(SIG)
BLACK(GND) BLACK(GND)
2
ON
1 2 3 4 5 6 7 8
No. 3 switch OFF: master (factory ship-out based)
ON
1 2 3 4 5 6 7 8
No. 3 switch ON: slave
- For the details on the wireless remote controller master/slave setting changes, refer to the
wireless remote controller manual.
- After completing the master/slave setting in the indoor unit product, turn Off the power of the
indoor unit product, and turn On the power after 1 minute.
• You can use two wired remote controllers for one indoor unit.
- A dedicated cable must be used for the connection. If necessary, use an extension cable
additionally and install. (2-Remo cable : PZCWRC2, Extension cable : PZCWRC1)
- For normal operation, one should be set as master and the other as slave.
(Refer to the function "Installation setting - RMC master/slave")
- After completing the RMC master/slave setting, turn off the power of indoor unit, and turn on
the power after 1 minutes.
- You cannot control the group as shown in the right for some products.
GND
Signal
DC 12 V
B Y R
OK
Master
NOTE
!
• During the group control, set only 1 indoor unit as master.
• During the group control, some functions other than the basic operation setting, fan speed
Low/Med/High, remote controller lock setting, and time setting may be limited.
• During the individual control, if the master indoor unit Dip switch is set to slave, malfunction
may occur.
INSTALLATION
139
GND
Signal
DC 12 V
B Y R
OK
Slave