1-Way Cassette Tt, Tu Chassis - LG ARNU073TUC4 Instruction Manual

Multi v ceiling cassette indoor unit

Hide thumbs

Table Of Contents

Table of Contents

DANGER

High voltage electricity is required to operate this system. Adhere to the National Electrical

Codes and these instructions when wiring. Always ground the unit following local, state, and

National Electrical Codes. Read the safety summary at the beginning of this manual.

Cable Connections

1. Ensure the input power is disconnected and there is no power on

the power input cable.

2. Refer to Figure 26 and route the power and outdoor unit com-

munications cables to the unit's terminal block. Do not

route the communications cable near the power cable.

3. Connect the power cable to the 1(L1) and 2(L2) termi-

nal block connections. Ensure the screws

securely connect the wire to the terminals

and are not loose.

4. Connect the field-provided outdoor unit

communications cable to the 3(A) and

4(B) terminal block connections. This

cable must be 18-2, stranded, shielded,

and meet all applicable codes. Polarity

matters on this IDU to ODU communica-

tions bus. Be sure to connect A terminals

to A terminals and B terminals to B termi-

nals. Ensure the communication cable is

properly grounded at the master outdoor

unit only. Do not ground this IDU to ODU

communications cable at any other point.

5. If the unit has a wall-mounted zone controller, connect the con-

troller's cable to the unit's remote control connection. On some

units this cable connects to a pigtail cable from the CN-REMO

connector on the control board and on some units it connects

directly to the CN-REMO connector.

Conduit

Due to our policy of continuous product innovation, some specifications may change without notification.