website http://www.lgservice.com
LG
System
Heat Pump Indoor Unit
INSTALLATION MANUAL
MODELS: LRNN, LRNV-BE/BG/BH Series
Type: Ceiling Concealed Duct - High Static
IMPORTANT
•Please read this installation manual completely before installing the product.
•Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
•Please retain this installation manual for future reference after reading it thoroughly.
Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements |
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Required Parts |
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Installation Parts Provided |
....3 |
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Safety Precautions................. |
4 |
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Installation |
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Installation guide map |
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Four type "A" screws & plastic |
Selection the best location |
7 |
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anchors |
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Connecting cable |
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Ceiling opening dimension |
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Pipes: Gas side |
and hanging bolt location ...... |
8 |
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Liquid side |
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(Refer to Product Data) |
Wiring Connection |
9 |
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Insulation materials |
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Additional drain pipe |
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Check the Drainage............. |
10 |
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Installation of Remote |
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Control.................................. |
13 |
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Required Tools
Level gauge
Screw driver
Electric drill
Hole core drill
Horizontal meter
Flaring tool set
Specified torque wrenches (different depending on model No.)
Spanner .......Half union
A glass of water
Screw driver
Drain Pipe Work................... |
14 |
Installation of Drain Pump...16
Optional Operation |
..............18 |
Hexagonal wrenchGas-leak detectorVacuum pump
Gauge manifold
Two type "B" screws |
Owner's manual |
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Thermometer |
2 
Indoor Unit
Installation Parts Provided
Installation
Air outlet vents |
Air filters |
Air intake vents
Remote Controller 
Name |
Clamp metal |
Drain hose |
Insulation for |
Clamp |
Screws for |
(Other) |
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fitting |
duct flanges |
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Quantity |
1 EA |
1 EA |
1 set |
6 EA |
1 set |
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• Owner's manual |
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• Installation manual |
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• Washers(8 pcs.) |
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Shape |
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for gas pipe |
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for liquid pipe |
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Installation Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■Be sure to read before installing the air conditioner.
■Be sure to observe the cautions specified here as they include important items related to safety.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
• There is risk of fire or electric shock.
Install the panel and the cover of control box securely.
For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.
•Do not disassemble or repair the product. There is risk of fire or elec-
tric shock.
Always install a dedicated circuit and breaker.
• There is risk of fire or electric shock. |
• Improper wiring or installation may |
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cause fire or electric shock |
Always ground the product.
• There is risk of fire or electric shock.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
4 
Indoor Unit
Safety Precautions
Do not modify or extend the power cable.
• There is risk of fire or electric shock.
For installation, always contact the dealer or an Authorized Service Center.
•There is risk of fire, electric shock, explosion, or injury.
Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.
•Moisture may condense and wet or damage furniture.
Do not install the product on a defective installation stand.
Be cautious when unpacking and installing the product.
•Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
Be sure the installation area does not deteriorate with age.
• It may cause injury, accident, or |
• If the base collapses, the air condi- |
damage to the product. |
tioner could fall with it, causing prop- |
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erty damage, product failure, and |
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personal injury. |
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
Installation Manual 5
Safety Precautions
■ Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
• Low refrigerant levels may cause
Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
•It may cause a problem for your neighbors.
Keep level even when installing
-the product.
• To avoid vibration or water leakage.
90˚
Do not install the product where it will be exposed to sea wind (salt spray) directly.
•It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
6 
Indoor Unit
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