Introduction; Ceiling Cassette Indoor Units; Safety; Required Tools (Field Provided) - LG ARNU073TUC4 Instruction Manual

Ceiling Cassette Indoor Units

This manual describes how to install the LG Electronics, Inc. 4-Way,
2-Way, and 1-Way Ceiling Cassette indoor units (IDU) for Multi V
Variable Refrigerant Flow (VRF) heat pump and heat recovery sys-
tems. Table 1 lists the available models. Refer to LG's Multi V Indoor
Unit Engineering Manual for complete detailed engineering data and
selection procedures.

Safety

Safety of personnel is the primary concern during all procedures.
Read and understand the safety summary at the front of this manual.
Read and understand this installation procedure before beginning
installation. Use the appropriate tools and accessories during instal-
lation. Plan your work and do not work alone, if possible. Know how
to obtain emergency medical and fire fighting assistance.
Installation Personnel
This equipment is intended for installation by personnel trained
in the required construction, mechanical, electrical, and/or other
disciplines.
Applicable Codes
Personnel must be familiar with and follow the applicable national,
state, and/or local codes. In the event of a conflict between any
applicable code and the instructions in this manual, comply with the
applicable code.
WARNING
Installation work must be performed by trained, authorized personnel
and in accordance with national wiring standards and all local or other
applicable codes. Improper installation can result in fire, electric shock,
physical injury, or death and can prevent proper operation of the unit.
Note:
Please read all instructions before installing this product. Become familiar
with the unit, it's components and connections, and the order of installa-
tion. Incorrect installation can degrade or prevent proper operation.

Required Tools (field provided)

• Level
• Screwdriver
• Electrical lineman pliers
• Electric drill
• Holesaw
• Drill
• Flaring tool set

Required Parts (field provided)

• Connecting cable (power and control)
• Pipes - vapor line and liquid line, with insulation
• 3/8" or 1/2" Threaded hanger rods
• Tubing cutter
• Tube/pipe reamer
• Torque wrenches
• Allen wrench
• Gas-leak detector
• Thermometer
• 3/8" or 1/2" nuts, flat washers, and lock/split washers
• Insulated drain hose
• Additional drain hose
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.

INTRODUCTION

Figure 1: 4-Way TQ, TR, TM, TN, TP Chassis
Return Air
Supply Air
Figure 2: 2-Way TL Chassis
Supply Air
Figure 3: 1-Way TU, TT Chassis
Supply Air
Filter
TE MP
Remo
te Contr
oller
Wired Remote Controller (Optional)
Filter
Return Air
Wired
Remote Controller
(Optional)
Filter
Return Air
TEM
Rem P
ot e Cont roller
Wired Remote Controller (Optional)
9