LG ARUN363DDA4 Installation Manual page 32

ELECTRICAL
Communication Cable Specifications
Communications Cable Specifications Between Multiple Indoor Units
Operating as a Group (Group Control)
If any indoor units were specified to operate in unison:
• Before running cable, decide which indoor unit will be the "Main." The other indoor units in that group will be designated as "Sub(s)." The
zone controller will be connected to the "Main."
• Set the pertinent DIP switch at each indoor unit to identify the Main and Sub(s).
• Use a daisy chain configuration and connect all of the group's indoor units together starting at the "Main" unit.
• NEVER splice, cut, or extend cable length with field provided cable. Always include enough cable to cover distance between all com-
ponents.
• Perform group control settings and connect the group control wiring after the system auto address and auto pipe procedures have been
completed.
For indoor units with hardwired connections SIG - 12V - GND (Comm.) terminals:
• From the controller to the main indoor unit, use 22 AWG, 3-conductor, twisted, stranded, unshielded. All wiring must comply with all applica-
ble local and national codes.
• From the main indoor unit to the sub indoor unit(s), daisy chain using 22 AWG, 3-conductor, twisted, stranded, unshielded.
( Do not attach wire to 12VDC terminal to the slave indoor units). All wiring must comply with all applicable local and national codes.
For indoor units with CN-REMO connections:
Use Group Control Kit (sold separately) containing extension and Y-splitter cables. Use one (1) group control cable kit for each indoor unit in
the group except for the last indoor unit.
• Cable connected to zone controller is the factory default connection.
• Indoor unit connections depend on indoor unit type.
Figure. Example of Indoor Unit Group to Zone Controller
Connections (Sig-12V-GND [Comm.] Terminal).
Master Indoor Unit
Signal 12VDC Comm.
Signal
4 5 6
Signal 12VDC Comm.
Indoor Unit
Indoor Unit
Signal 12VDC Comm.
12VDC Comm.
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.
Figure. Example of Indoor Unit Group to Zone Controller
Connections (CN-REMO).
Master Indoor Unit Indoor Unit
CN-REMO
LG
Supplied
LG Supplied Group Control Kit (PZCWRCG3)
Indoor Unit
CN-REMO CN-REMO
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