WIRING CONNECTIONS
General Specifications
•
Wired remote controllers can be connected to all indoor unit types.
•
Wireless controllers can be used in conjunction with wired remote
controllers.
• A dry contact unit can be connected with a central controller
simultaneously.
- The master indoor unit is recognized by the dry contact unit and
the central controller.
- Group Control only available for indoor units manufactured after
February 2009.
- The central controller can control indoor units after setting the
address of the master indoor unit only.
- Slave indoor unit cannot be individually controlled by central
controller.
- Slave indoor unit will operate like master indoor unit.
• If an error occurs with the indoor unit, the error will be displayed on
the wired remote controller.
•
The following functions are available with group control:
• Selection of operation options (operation/mode/set temperature)
• Control of air flow rate (High/Medium/Low)
Communication Cables Between Multiple Indoor Units Operating as a Group
(Group Control)
1. If any indoor units were specified to operate in unison, use
one (or multiple) three-core Group Control Kit (sold separately)
containing extension and Y-splitter cables. One (1) group control
cable kit for each indoor unit in the group except for the last
indoor unit.
2. Always use an LG provided group control communications cable
(Group Control Kit; sold separately) between the indoor unit and
the wall-mounted zone controller.
3. NEVER splice, cut, or extend cable length with field provided
cable.
4. A maximum of 16 indoor units can be connected to a wired
remote controller (maximum wire length: 164 feet). Before
running cable, decide which indoor unit will be the “Master;” set
the remaining as “Slave.” The zone controller will be connected
to the “Master.”
5. Identify each indoor unit operating as a group as “Master” or
“Slave”. Adjust the pertinent DIP switch at each indoor unit. On
wall mounted indoor unit models, set the assignment using the
wireless remote controller.
6. Use a daisy chain configuration and connect all of the group’s
indoor units together starting at the “Master” unit.
CN-REMO
On All Indoor Unit Styles
CN-REMO
On All Indoor Unit Styles
CN-REMO
On All Indoor Unit Styles
LG
Supplied
LG Supplied Group Control Kit (PZCWRCG3)
Cable connected to Zone Controller is the factory default connection.
Figure 103:Indoor Unit Group to Zone Controller Connections.
Accessory
Model Number
Image
Wired Remote Group Control
Cable Assembly - Required
for connecting multiple indoor
units to a control group
PZCWRCG3
Wired Remote/Wired Remote
Extension Cable - Required
for extending the distance
between indoor units or
remote controllers in a control
group
PZCWRC1
Table 355:
Accessories Required for Group Control.
Indoor Unit Group Control
Due to our policy of continuous product innovation, some specifications may change without notification.
©
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
390 | WIRING CONNECTIONS
Multi F and Multi F MAX Indoor Unit Engineering Manual
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