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Ducted Indoor Units
This manual describes how to install LG ducted indoor units (IDU)
for Multi V Variable Refrigerant Flow (VRF) heat pump and heat
recovery systems. 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.
WARNING
Installation work must be performed by trained personnel and in ac-
cordance with national wiring standards and all local or other applicable
codes. Improper installation can result in fire, electric shock, physical
injury, or death.
Note:
Please read all instructions before installing this product. Become familiar
with the unit, its components and connections, and the order of installa-
tion. Incorrect installation can degrade or prevent proper operation.
Required Tools (field provided)
• Level
• JIS screwdriver
• Electrical lineman pliers
• Electric drill
• Holesaw
• Drill
• R410A flaring tool set
Required Parts (field provided)
• Pipes - vapor line and liquid line, with insulation
• 3/8" or 1/2" nuts, flat washers, and lock/split washers
• 3/8" or 1/2" threaded hanger rods
• Insulated drain hose
• Additional drain hose
• Connecting cable (power and control)
• Tubing cutter
• Tube/pipe reamer
• Torque wrenches
• Allen wrench
• Refrigerant gas-leak detector
• Thermometer
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: High-Static Ducted, B8 Chassis
Figure 2: High-Static Ducted, M1/M2/M3 Chassis
Figure 3: Low-Static Ducted, L1/L2/L3 Chassis
Figure 4: Vertical Air Handler NJ/NK Chassis
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