LG MULTI V ARNU073TUD4 Installation Manual page 52

WIRING
6. Connect the power wiring to the terminal block connections. Ensure the screws securely connect the wire to the terminals and are not
loose.
• For One-Way Cassettes: Terminal Block 1(L1) and 2(L2) connections.
• For Two-Way and Four-Way Cassettes: Terminal Block L(L1) and N(L2) connections.
7. Connect the field-provided communications cable to the 3(A) and 4(B) terminal block connections. Polarity matters on the outdoor unit
to indoor unit / heat recovery unit communications bus, and must be maintained throughout the entire system. Be sure to connect 3(A)
terminals to A terminals and 4(B) terminals to B terminals. Refer to the next pages for indoor unit wiring connections, the Outdoor Unit
Installation Manual for information regarding the outdoor unit and heat recovery unit wiring connections, or review the wiring diagrams on
the applicable units.
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•
8. If a remote controller is to be installed, connect the remote controller's cable to the indoor unit's remote controller connection. Controller
connections depend on type of indoor unit being installed. Some indoor units use terminal block connections; other indoor units use Molex
connections. See the wiring diagram for each specific indoor unit.
9. Connect any additional cables required for the installation such as those for the decoration panels.
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