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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.
Standard Inverter
MFL68061228
Rev.01_061120
www.lghvac.com
www.lg.com
Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.
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2TIPS FOR SAVING ENERGY
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below:
•Do not cool excessively indoors. This may be harmful for your health and may consume more electricity.
•Block sunlight with blinds or curtains while you are operating the air conditioner.
•Keep doors or windows closed tightly while you are operating the air conditioner.
•Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
•Speed up the fan to cool or warm indoor air quickly, in a short period of time.
•Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
•Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
SAFETY INSTRUCTIONS |
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SAFETY INSTRUCTIONS
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.
!Read the part with this symbol carefully and follow the instructions in order to avoid risk.
!WARNINGThis symbol is displayed to indicate matters and operations that can cause risk.
This indicates that the failure to follow the instructions can cause serious injury or death.
! CAUTION
This indicates that the failure to follow the instructions can cause the minor injury or damage to the product.
!WARNING
•Installation or repairs made by unqualified persons can result in hazards to you and others.
•Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.
•The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.
•Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
Installation
•Always perform grounding.
-Otherwise, it may cause electrical shock.
•Don’t use a power cord, a plug or a loose socket which is damaged.
-Otherwise, it may cause a fire or electrical shock.
•For installation of the product, always contact the service center or a professional installation agency.
-Otherwise, it may cause a fire, electrical shock, explosion or injury.
•Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
-If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.
•Always install an air leakage breaker and a dedicated switching board.
-No installation may cause a fire and electrical shock.
•Do not keep or use flammable gases or combustibles near the air conditioner.
-Otherwise, it may cause a fire or the failure of product.
•Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.
-It may cause injury or an accident.
•Do not disassemble or repair the product randomly.
-It will cause a fire or electrical shock.
•Do not install the product at a place that there is concern of falling down.
-Otherwise, it may result in personal injury.
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SAFETY INSTRUCTIONS |
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• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress |
• Use caution when unpacking and installing. - Sharp edges may cause injury.
air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion. There is the risk of death, injury, fire or explosion.
Operation
•Do not share the outlet with other appliances.
-It will cause an electric shock or a fire due to heat generation.
•Do not use the damaged power cord.
-Otherwise, it may cause a fire or electrical shock.
•Do not modify or extend the power cord randomly.
-Otherwise, it may cause a fire or electrical shock.
•Take care so that the power cord may not be pulled during operation.
-Otherwise, it may cause a fire or electrical shock.
•Unplug the unit if strange sounds, smell, or smoke comes from it.
-Otherwise, it may cause electrical shock or a fire.
•Keep the flames away.
-Otherwise, it may cause a fire.
•Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands.
-Otherwise, it may cause a fire or electrical shock.
•Do not use the power cord near the heating tools.
-Otherwise, it may cause a fire and electrical shock.
•Do not open the suction inlet of the indoor/outdoor unit during operation.
-Otherwise, it may electrical shock and failure.
•Do not allow water to run into electrical parts.
-Otherwise, it may cause the failure of machine or electrical shock.
•Hold the plug by the head when taking it out.
-It may cause electric shock and damage.
•Never touch the metal parts of the unit when removing the filter.
-They are sharp and may cause injury.
•Do not step on the indoor/outdoor unit and do not put anything on it.
-It may cause an injury through dropping of the unit or falling down.
•Do not place a heavy object on the power cord.
-Otherwise, it may cause a fire or electrical shock.
•When the product is submerged into water, always contact the service center.
-Otherwise, it may cause a fire or electrical shock.
•Take care so that children may not step on the outdoor unit.
-Otherwise, children may be seriously injured due to falling down.
SAFETY INSTRUCTIONS |
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! CAUTION
Installation
•Install the drain hose to ensure that drain can be securely done.
-Otherwise, it may cause water leakage.
•Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.
-Otherwise, it may cause dispute with the neighbors.
•Always inspect gas leakage after the installation and repair of product.
-Otherwise, it may cause the failure of product.
•Keep level parallel in installing the product.
-Otherwise, it may cause vibration or water leakage.
•Do not install the unit in potentially explosive atmospheres.
Operation
•Avoid excessive cooling and perform ventilation sometimes.
-Otherwise, it may do harm to your health.
•Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.
-The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.
•Do not use an appliance for special purposes such as preserving animals vegetables, precision machine, or art articles.
-Otherwise, it may damage your properties.
•Do not place obstacles around the flow inlet or outlet.
-Otherwise, it may cause the failure of appliance or an accident.
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6TABLE OF CONTENTS
TABLE OF CONTENTS
2TIPS FOR SAVING ENERGY
3SAFETY INSTRUCTIONS
7INSTALLATION OF OUTDOOR UNIT
7Installation Places
7Piping length and the elevation
8WIRING CONNECTION
8Electrical Wiring
8Connecting Cables between Indoor Unit and Outdoor Unit
10Connecting the cable to Outdoor Unit
11CONNECTING COPPER PIPES
11Preparation of Piping
12Plumbing materials and storage methods
13Connecting the pipes to the Outdoor unit
14Forming the piping
15LEAKAGE TEST AND EVACUATION
15Preparation
15Leakage test
16Evacuation
17TEST RUNNING
18FUNCTION
18Pump Down
19SELF-DIAGNOSIS FUNCTION
19Error Indicator (Outdoor)
20DIP S/W Setting
21INSTALLATION GUIDE AT THE SEASIDE
22SEASONAL WIND AND CAUTIONS IN WINTER
INSTALLATION OF OUTDOOR UNIT |
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INSTALLATION OF OUTDOOR UNIT
Installation Places
-If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
-Ensure that the spaces indicated by arrows around front, back and side of the unit.
-Do not place animals and plants in the path of the warm air.
-Take the air conditioner weight into account and select a place where noise and vibration are minimum.
-Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.
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Awning |
More than |
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300(11.8) |
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More than |
Fence |
300(11.8) |
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obstacles |
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or |
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More than 600(23.6)
More than 700(27.6)
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Unit : mm(inch) |
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Piping length and the elevation |
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CAPACITY |
Pipe Size mm(inch) |
Length A Unit : m(ft) |
Elevation B Unit : m(ft) |
Additional |
A-Coil Combination |
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Additional refrigerant |
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refrigerant |
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(kBtu/h) |
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Unit : g/m(oz/ft) |
* |
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Gas |
Liquid |
Standard |
Max. |
Standard |
Max. |
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Unit : g(oz) |
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18 |
Ø 15.88(5/8) |
Ø 9.52(3/8) |
7.5(24.6) |
50(164) |
5(16) |
30(98) |
40(0.43) |
- |
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500(17.6) |
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24 |
Ø 15.88(5/8) |
Ø 9.52(3/8) |
7.5(24.6) |
50(164) |
5(16) |
30(98) |
40(0.43) |
- |
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200(7.1) |
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36 |
Ø 15.88(5/8) |
Ø 9.52(3/8) |
7.5(24.6) |
75(246) |
5(16) |
30(98) |
40(0.43) |
- |
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- |
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42 |
Ø 15.88(5/8) |
Ø 9.52(3/8) |
7.5(24.6) |
75(246) |
5(16) |
30(98) |
40(0.43) |
- |
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- |
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48 |
Ø 15.88(5/8) |
Ø 9.52(3/8) |
7.5(24.6) |
75(246) |
5(16) |
30(98) |
40(0.43) |
- |
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If installed tube is shorter than 7.5 m(24.6 ft), additional refrigerant charging is not necessary. Additional Refrigerant = [A -7.5 m(2.46 ft)] x Additional refrigerant [g(oz)]
*In case of A-Coil combination, Charge additional refrigerant
ex) If installed tube is shorter than 7.5 m(24.6 ft), Charge additional refrigerant for A-Coil Combination [g(oz)]
ex) If installed tube is more than 7.5 m(24.6 ft),
Total Additional Refrigerant = { [A -7.5 m(2.46 ft)] x Additional refrigerant [g(oz)] } + additional refrigerant fot A-Coil Combination [g(oz)]
Indoor unit
Outdoor unit
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A |
A |
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B |
Outdoor unit Indoor unit |
B |
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8WIRING CONNECTION
WIRING CONNECTION
Electrical Wiring
-All wiring must comply with local requirements.
-Select a power source that is capable of supplying the current required by the air conditioner.
-Use a recognized ELCB(Electric Leakage Circuit Breaker) between the power source and the unit. A disconnection device to adequately disconnect all supply lines must be fitted.
-Model of circuit breaker recommended by authorized personnel only.
ELCB
Main
power source
Switch box
Outdoor
Indoor
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Model |
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Phase(Ø) |
ELCB (A) |
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18k |
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1 |
30 |
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24k |
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1 |
30 |
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36k |
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1 |
40 |
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42k |
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1 |
40 |
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48k |
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1 |
40 |
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Connecting Cables between Indoor Unit and Outdoor Unit
Outdoor |
Indoor |
unit |
unit |
3 |
3 |
2 |
2 |
1 |
1 |
! CAUTION
The power cord connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cord set complying with the national regulation.
10±3 mm
5mm 
35±
GN/ |
Y |
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L |
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20 |
mm |
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The connecting cable connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cord set complying with the national regulation.)
10±3 mm |
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mm |
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5 |
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35± |
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GN/YL |
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NORMAL |
20 |
mm |
CROSS-SECTIONAL |
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AREA 0.75 mm2 (18AWG)
When the connection line between the indoor unit and outdoor unit is over 40 m(131 ft), connect the telecommunication line and power line separately.
•If the power cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent.
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