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INSTALLATION MANUAL
AIR
CONDITIONER
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
Original instruction
www.lg.com
P/NO : MFL69459902
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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Required Tools |
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Features................................... |
3 |
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Safety Precautions................. |
4 |
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Installation |
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ο Level gauge |
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ο Four type "A" screws |
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ο Screw driver |
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Selection the best location |
7 |
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ο Connecting cable |
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ο Electric drill |
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ο Hole core drill |
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Ceiling opening dimension |
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ο Pipes: Gas side |
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ο Flaring tool set |
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and hanging bolt location...... |
8 |
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Liquid side |
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ο Specified torque wrenches |
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(Refer to Product |
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(different depending on model No.) |
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Data) |
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ο Spanner....... |
Half union |
Indoor Unit Installation .......... |
9 |
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ο Insulation materials |
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ο Additional drain pipe |
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Wiring Connection................. |
9 |
Checking the Drainage ....... |
10 |
Indoor Unit Drain Piping...... |
11 |
Dip Switch Setting............... |
13 |
οA glass of water
οScrew driver
οHexagonal wrench
οGas-leak detector
οVacuum pump
οGauge manifold
οOwner's manual
οThermometer
Group Control Setting ......... |
14 |
Model Designation .............. |
19 |
Airborne Noise Emission .... |
19 |
Limiting concentration......... |
19 |
How to Set E.S.P?................ |
20 |
2 Indoor Unit
Feature
Features
Air outlet vents
Air filters
Air intake vents
Control box
Wired Remote Controller
Installation Tool
Name |
Drain hose |
Clamp metal |
Washer for |
Clamp |
Insulation for |
(Other) |
hanging bracket |
(Tie Wrap) |
fitting |
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Quantity |
1 EA |
2 EA |
8 EA |
4 EA |
1 SET |
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• Owner's manual |
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• Installation manual |
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.
νIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
WARNING This symbol indicates the possibility of death or serious injury.
CAUTION This symbol indicates the possibility of injury or damage to properties only.
ν Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
ν Installation
Do not use a defective or under- |
For electrical work, contact the |
rated circuit breaker. Use this |
dealer, seller, a qualified electri- |
appliance on a dedicated circuit. |
cian, or an Authorized Service |
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Center. |
•There is risk of fire or electric shock.
Install the panel and the cover of control box securely.
•There is risk of fire or electric shock.
Do not modify or extend the power cable.
•Do not disassemble or repair the product. There is risk of fire or electric shock.
Always install a dedicated circuit and breaker.
•Improper wiring or installation may cause fire or electric shock.
Do not install, remove, or re-in- stall the unit by yourself (customer).
• There is risk of fire or electric |
• There is risk of fire, electric shock, |
shock. |
explosion, or injury. |
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.
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.
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.
4 Indoor Unit
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Safety Precautions |
Do not turn on the breaker or power under condi- |
Use a vacuum pump or Inert (nitrogen) gas when |
tion that front panel, cabinet, top cover, control |
doing leakage test or air purge. Do not compress |
box cover are removed or opened. |
air or Oxygen and Do not use Flammable gases. |
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Otherwise, it may cause fire or explosion. |
• Otherwise, it may cause fire, electric shock, explosion |
• There is the risk of death, injury, fire or explosion. |
or death. |
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ν Operation
Do not let the air conditioner run |
Take care to ensure that power |
for a long time when the humid- |
cable could not be pulled out or |
ity is very high and a door or a |
damaged during operation. |
window is left open. |
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• Moisture may condense and wet or |
• There is risk of fire or electric |
damage furniture. |
shock. |
Do not plug or unplug the power |
Do not touch(operate) the prod- |
supply plug during operation. |
uct with wet hands. |
•There is risk of fire or electric 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.
When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.
•There is risk of fire or electrical shock.
Do not store or use flammable gas or combustibles near the product.
•There is risk of fire or failure of product.
If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable.
• Do not use the telephone or turn |
• There is risk of electric shock or |
switches on or off. |
fire. |
There is risk of explosion or fire. |
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Do not place anything on the power cable.
•There is risk of fire or electric shock.
Do not place a heater or other appliances near the power cable.
•There is risk of fire and electric shock.
Do not use the product in a tightly closed space for a long time.
•Oxygen deficiency could occur.
Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.
•There is risk of property damage, failure of product, or electric shock.
Do not open the inlet grill of the |
When the product is soaked |
Be cautious that water could not |
product during operation. |
(flooded or submerged), contact |
enter the product. |
(Do not touch the electrostatic |
an Authorized Service Center. |
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filter, if the unit is so equipped.) |
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• There is risk of physical injury, |
• There is risk of fire or electric |
• There is risk of fire, electric shock, |
electric shock, or product failure. |
shock. |
or product damage. |
Ventilate the product from time to time when operating it together with a stove, etc.
•There is risk of fire or electric shock.
When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.
•There is risk of product damage or failure, or unintended operation.
Turn the main power off when cleaning or maintaining the product.
•There is risk of electric shock.
Take care to ensure that nobody could step on or fall onto the outdoor unit.
•This could result in personal injury and product damage.
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Installation Manual 5
Safety Precautions
CAUTION
ν Installation
Always check for gas (refrigerant) leakage |
Install the drain hose to ensure that |
after installation or repair of product. |
water is drained away properly. |
• Low refrigerant levels may cause |
• A bad connection may cause |
failure of product. |
water leakage. |
Do not install the product where the noise |
Use two or more people to lift and |
or hot air from the outdoor unit could dam- |
transport the product. |
age the neighborhoods. |
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• It may cause a problem for your |
• Avoid personal injury. |
neighbors. |
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Keep level even when installing the product.
•To avoid vibration or water leakage.
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.
ν 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 |
Do not touch the metal parts of the |
use harsh detergents, solvents, |
product when removing the air filter. |
etc. |
They are very sharp! |
• There is risk of fire, electric |
• There is risk of personal injury. |
shock, or damage to the plastic |
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parts of the product. |
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Always insert the filter securely. |
Do not insert hands or other objects |
Clean the filter every two weeks or |
through the air inlet or outlet while the |
more often if necessary. |
product is operated. |
• A dirty filter reduces the efficiency of |
• There are sharp and moving parts |
the air conditioner and could cause |
that could cause personal injury. |
product malfunction or damage. |
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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.
•It is not sanitary and could cause serious health issues.
Use a firm stool or ladder when cleaning or maintaining the product.
• Be careful and avoid personal injury.
Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.
• There is risk of fire or explosion.
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.
• They may burn or explode.
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.
•The chemicals in batteries could cause burns or other health hazards.
If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked.
•The chemicals in batteries could cause burns or other health hazards.
6 Indoor Unit
Installation
Installation
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 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
Confirm the positional relationship between the unit and suspension bolts.
•Installation the ceiling opening to clean the filter or service under the product.
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(Unit: mm) |
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Capacity (kBtu/h) |
A |
B |
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5/7/9 |
800 |
800 |
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12/15/18 |
800 |
1000 |
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21/24 |
800 |
1200 |
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Top view (Unit: mm) |
Inspection hole |
Control box |
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(600 x 600) |
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600 |
Air outlet |
600 |
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Side view (unit: mm)
Air outlet |
H=20 or more
•Suitable dimension "H" is necessary to get a slope to drain as shown in the figure
A(Min) |
B(Min) |
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Ceiling
Service Space
A
B
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Installation Manual 7