LG B42AWYU362 Installation Manual
LG
LG
Air Conditioner
INSTALLATION MANUAL
Type : Ceiling Concealed Duct
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 Concealded Duct Air Conditioner Installation Manual
TABLE OF CONTENTS
Installation
Required Parts Required Tools
Requirements
Safety Precautions.............. |
3 |
Introduction ......................... |
6 |
Installation of Indoor, |
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Outdoor Unit ........................ |
7 |
Connecting Pipes to the |
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Indoor Unit ......................... |
16 |
Connecting Pipes to the |
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Outdoor Unit ...................... |
18 |
Checking the Drainage ..... |
19 |
Connecting Cables |
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between Indoor Unit and |
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Outdoor Unit ...................... |
19 |
• Four Type “A” screws |
• Level |
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• Connecting cable |
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• Screw driver |
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• Electric drill |
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• Hole core drill (ø70mm) |
• Pipes: Gas side .....Ø15.88 ,Ø19.05mm |
• Flaring Tools set |
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Liquid side .............Ø9.52mm |
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• Insulated drain hose |
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• Insulation materials |
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• Additional Drain hose |
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(Inner Dia............... |
25mm) |
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• Screw driver
Air Purging and Evacuation .... |
22 |
• Hexagonal Wrench (4mm/5mm) |
Group Control |
24 |
• Gas-leak Detector |
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Two Thermistor system .... |
24 |
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Continuous Fan Operation ... |
25 |
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External Static Pressure & |
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air Flow............................... |
26 |
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Accessory Installation |
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Guide .................................. |
28 |
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Installation guide at the |
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Seaside............................... |
34 |
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2 Ceiling Concealed Duct Air Conditioner
Safety Precautions
Safety Precautions
To prevent the injury of 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.
■ The meanings of the symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the air conditioner.
NOTICE This symbol indicates special notes.
■ 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.
For electrical work, contact the |
Always ground the product. |
dealer, seller, a qualified |
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electrician, or an Authorized |
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Service Center. |
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• Do not disassemble or repair the |
• There is risk of fire or electric |
product. There is risk of fire or |
shock. |
electric shock. |
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Install the panel and the cover of |
Always install a dedicated |
Use the correctly rated breaker |
control box securely. |
circuit and breaker. |
or fuse. |
•There is risk of fire or electric shock.
Do not modify or extend the power cable.
•There is risk of fire or electric shock.
• Improper wiring or installation |
• There is risk of fire or electric |
may cause fire or electric shock |
shock. |
Do not install, remove, or re- |
Be cautious when unpacking |
install the unit by yourself |
and installing the product. |
(customer). |
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• There is risk of fire, electric |
• Sharp edges could cause injury. Be |
shock, explosion, or injury. |
especially careful of the case edges and |
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the fins on the condenser and evaporator. |
Installation Manual 3
Safety Precautions
For installation, always contact the dealer or an Authorized Service Center.
•There is risk of fire, electric shock, explosion, or injury.
Do not install the product on a defective installation stand.
•It may cause injury, accident, or damage to the product.
Be sure the installation area does not deteriorate with age.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
■ Operation
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.
Take care to ensure that power cable could not be pulled out or damaged during operation.
•There is risk of fire or electric shock.
Do not plug or unplug the power supply plug during operation.
•There is risk of fire or electric shock.
Do not touch(operate) the product with wet hands.
•There is risk of fire or electrical shock.
Do not allow water to run into electric parts.
•It may cause There is risk of fire, failure of the product, or electric shock.
Do not store or use flammable gas or combustibles near the product.
•There is risk of fire or failure of product.
When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.
•Do not use the telephone or turn switches on or off.
There is risk of explosion or fire
If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable.
•There is risk of electric shock or fire.
Do not open the inlet grill of the product during operation.
(Do not touch the electrostatic filter, if the unit is so equipped.)
•There is risk of physical injury, electric shock, or product failure.
When the product is soaked (flooded or submerged), contact an Authorized Service Center.
•There is risk of fire or electric shock.
Ventilate the product from time to time when |
Turn the main |
operating it together with a stove, etc. |
maintaining the |
• There is risk of fire or electric shock. |
• There is risk of |
When the product is not be used for a long |
Take care to |
time, disconnect the power supply plug or turn |
or fall onto the |
off the breaker. |
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• There is risk of product damage or failure, or |
• This could result |
unintended operation. |
damage. |
4 Ceiling Concealed Duct Air Conditioner
Safety Precautions
■ Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
•Low refrigerant levels may cause failure of product.
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Install the drain hose to |
Keep level even when |
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ensure that water is drained |
installing the product. |
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away properly. |
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• A bad connection may cause |
• To avoid vibration or water |
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water leakage. |
leakage. |
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Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
Use two or more people to lift and transport the product.
Do not install the product where it will be exposed to sea wind (salt spray) directly.
• It may cause a problem for your |
• Avoid personal injury. |
• It may cause corrosion on the product. |
neighbors. |
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Corrosion, particularly on the condenser |
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and evaporator fins, could cause product |
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malfunction or inefficient operation. |
■ Operation
Do not expose the skin directly to cool air for long periods of time.
(Don't sit in the draft.)
• This could harm to your health.
Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.
• There is risk of damage or loss of property.
Do not block the inlet or outlet of air flow.
• It may cause product failure.
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
•There is risk of fire, electric shock, or damage to the plastic parts of the product.
Do not touch the metal parts of the product when removing the air filter. They are very sharp!
• There is risk of personal injury.
Do not step on or put anyting on the product. (outdoor units)
•There is risk of personal injury and failure of product.
Do not drink the water drained from the product.
Always insert the filter securely. Clean the filter every two weeks or more often if necessary.
•A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
Do not insert hands or other objects through the air inlet or outlet while the product is operated.
•There are sharp and moving parts that could cause personal injury.
Use a firm stool or ladder |
Replace the all batteries in the |
when cleaning or maintaining |
remote control with new ones |
the product. |
of the same type. Do not mix |
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old and new batteries or |
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different types of batteries. |
•It is not sanitary and could cause serious health issues.
• Be careful and avoid personal |
• There is risk of fire or explosion |
injury. |
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Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.
If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked.
• They may burn or explode.
•The chemicals in batteries could cause burns or other health hazards.
Installation Manual 5
Installation Parts Provided
Introduction
Features
Air outlet vents
Air intake vents
Remote Controller |
(Side) |
(Rear) |
Air intake vents
Air outlet 
vents
ontrol over
onnecting ire
iping
rain hose
Connecting wire |
Connection pipe |
Drain hose
6 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit
Selection
of
the
best
location
Indoor unit
Install the air conditioner in the location that satisfies the following conditions.
•The place shall easily bear a load exceeding four times the indoor unit’s weight.
•The place shall be able to inspect the unit as the figure.
•The place where the unit shall be leveled.
•The place shall allow easy water drainage.(Suitable dimension “H” is necessary to get a slope to drain as figure.)
•The place shall easily connect with the outdoor unit.
•The place where the unit is not affected by an electrical noise.
•The place where air circulation in the room will be good .
•There should not be any heat source or steam near the unit
Outdoor unit
•If an awning is built over the unit to prevent direct sunlight or rain exposure, be careful that heat radiation from the condenser is not restricted.
•There should not be any animals or plants which could be affected by hot air discharged.
•Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.
Top view |
Inspection hole |
(unit: mm) |
(450 x 450) |
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Control box |
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450 |
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Front |
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Front view
H
(Unit : mm) |
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More |
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Sunroof |
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300 |
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Fence |
or |
More than |
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100 |
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obstacles |
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More than |
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600 |
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More than |
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700 |
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Installation Manual 7
Installation of Indoor, Outdoor Unit
Piping length and the elevation
Capacity |
Pipe Size |
Length A(m) |
Elevation B(m) |
*Additional |
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mm(inch) |
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(Btu/h) |
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refrigerant(g/m) |
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Gas |
Liquid |
Standard |
Max. |
Standard |
Max. |
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42 k |
15.88(5/8) |
9.52(3/8) |
7.5 |
50 |
5 |
30 |
60 |
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48 k |
15.88(5/8) |
9.52(3/8) |
7.5 |
50 |
5 |
30 |
60 |
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55 k |
15.88(5/8) |
9.52(3/8) |
7.5 |
50 |
5 |
30 |
60 |
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Outdoor unit
Outdoor unit
Indoor unit
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A |
Oil trap |
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Outdoor unit |
B |
Indoor |
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B |
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Indoor unit |
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If the elevation is more than 5 m |
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between indoor and outdoor. |
CAUTION:
•The Standard pipe length is 7.5 m and no need to additional charge of the refrigerant to max 15 m. If the pipe length exceeds 15 m, need to additional charge of the refrigerant which according to the table.
•If 55 kBtu/h Model is installed at a distance of 50m, 2,100g of refrigerant should be added (50-15) x 60g = 2,100g
•Capacity is based on standard length and maximun allowance length is on the basis of reliability.
•Improper refrigerant charge may result in abnormal cycle.
•Oil trap should be installed every 5~7 meters.
8 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
Indoor
unit
installation
■ Installation of Unit |
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Install the unit above the ceiling correctly. |
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K |
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H |
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CASE 1 |
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POSITION OF SUSPENSION BOLT |
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G F |
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• Apply a joint-canvas between the unit and |
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duct to absorb unnecessary vibration. |
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• Apply a filter Accessory at air return hole. |
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(Unit:mm) |
E D |
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Dimension |
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Capacity |
A B |
C |
D |
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F |
G |
H |
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K |
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(Btu/h) |
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C |
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42 k |
1362 1320 |
840 |
287 |
400 |
441 |
582 |
882 1373 315 |
366 |
40 |
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B |
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48 k |
1362 1320 |
840 |
287 |
400 |
441 |
582 |
1182 1373 315 |
366 |
40 |
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55 k |
1362 1320 |
840 |
287 |
400 |
441 |
582 |
1182 1373 315 |
366 |
40 |
A |
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M10 Nut |
X 4 |
(Local |
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CASE 2 |
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M10 SP. washer X 4 |
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supply) |
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M10 washer |
X 4 |
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POSITION OF SUSPENSION BOLT |
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• A place where the unit will be leveled and |
M10 washer |
X 4 |
(Local |
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that can support the weight of the unit. |
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M10 SP. washer X 4 |
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• A place where the unit can withstand its |
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M10 Nut |
X 4 |
supply) |
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vibration. |
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• A place where service can be easily |
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performed. |
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Installation Manual |
9 |
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Installation of Indoor, Outdoor Unit
CAUTION
1.Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
2.Minimum thickness of the insulation for the connecting pipe shall be 10mm.
• The unit must be declined to the drain hose connected when finished installation.
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Ceiling |
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<![if ! IE]> <![endif]>1~3mm |
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CORRECT |
INCORRECT |
Safety drain hole |
Main drain hole |
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Drainage hole |
Drainage hole |
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CAUTION FOR GRADIENT OF UNIT AND DRAIN PIPING
Lay the drain hose with a downward inclination so water will drain out.
1. Main drain |
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Thermal insulator |
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(Local supply) |
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• Always lay the drain with downward inclination |
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Drainage pipe |
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(1/50 to 1/100). |
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(Local supply) |
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Prevent any upward flow or reverse flow in any part. |
Unit |
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• 10mm or thicker formed thermal insulator shall |
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always be provided for the drain pipe. |
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Make sure to be closed. |
Drainage hole |
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• Upward routing not |
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allowed |
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CORRECT |
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• Install the P-Trap (or U-Trap) to prevent |
INCORRECT |
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a water leakage caused by the blocking |
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of intake air filter. |
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Applied U-Trap Dimension |
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2. Safety drain |
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• There is no need to |
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provide a trap for the |
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B |
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safty drain. If the |
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Main drain pipe |
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C |
safty drain pipe is |
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A ≥ 70mm |
U-Trap |
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connected to the |
Safety drain pipe |
B ≥ 2C |
A |
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main drain pipe, |
C ≥ 2 x SP |
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SP = External |
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make the connection |
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Pressure |
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below the trap on the |
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(mmAq) |
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Ex) External Pressure = 10mmAq |
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main drain pipe. |
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A |
≥ 70mm |
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B |
≥ 40mm |
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C ≥ 20mm |
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10 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
• Drill the piping hole with 70mm dia, hole core |
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WALL |
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drill. |
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Indoor |
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Outdoor |
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• Piping hole should be slightly slant to the |
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outdoor side. |
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5~7mm |
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INSULATION, OTHERS |
Insulate the joint and tubes completely. |
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THERMAL INSULATION All thermal insulation must comply with local requirement.
INDOOR UNIT
Union for liquid pipe
Refrigerant pipe and thermal
insulator(Local supply)
Hose crip for thermal insulator (Local supply)
Thermal insulator for refrigerant pipe (Local supply)
Union for gas pipe
Thermal insulator for refrigerant pipe (Local supply)
Overlap with thermal
insulator for piping.
Hose crip for thermal insulator(Local supply)
Make sure that there is no clearance here.
REFRIGERANT PIPE
• Insulate and tape the gas piping.
CAUTION: Cutting line of insulation must look upper direction. Thickness of insulation is 10mm or over.
NOTICE Recommended Insulation material
Meterial : FOAM PE
Thickness : 10mm
Density : less than 0.032 ±0.005(g/cm2)
TEST AND CHECK
Power cable |
Tape |
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Liquid pipe |
Gas pipe |
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Thermal insulator |
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Thermal conductivity : less than 0.03(kcal/m.hr.°C)
■ After all workings are finished, check the working and operation.
• Air distribution |
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Is the air circulation good? |
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• Drain |
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Is the drainage smoothly and no sweating? |
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• Gas leakage |
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Is the piping connection correctly? |
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• Wiring |
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Is the wiring connection correctly? |
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• Lock-bolt |
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Is the lock-bolt of compressor loosened? |
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Installation Manual 11
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