ESPAÑOL FRANÇAIS ENGLISH
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.
TYPE : Multi Type
http://www.lghvac.com
www.lg.com
P/NO : MFL68280101
FLEX MULTI SPLIT INSTALLATION
INSTRUCTIONS
Multi Air Conditioner Installation Manual
TABLE OF CONTENTS
Installation Requirements |
|
Installation Parts Provided ................................................... |
4 |
Safety Precautions ................................................................ |
5 |
Installation of Indoor, Outdoor Unit ..................................... |
8 |
Select the best location .................................................... |
8 |
Seaside Applications and Installation.............................. |
10 |
Seasonal Wind And Cautions In Winter........................... |
11 |
Piping length and elevation ............................................. |
12 |
Installation............................................................................ |
14 |
Connecting the piping...................................................... |
14 |
How To Fix....................................................................... |
18 |
Wiring Connection........................................................... |
19 |
Conduit connection.......................................................... |
19 |
Ceiling dimension and hanging bolt location................... |
20 |
How to Fix ....................................................................... |
21 |
Wiring Connection........................................................... |
21 |
Conduit connection.......................................................... |
21 |
Installation of Wired Remote Controller(Optional)........... |
22 |
Installation of Decorative Panel....................................... |
24 |
Drain Piping..................................................................... |
26 |
Flaring Work and Connection of Piping ............................ |
29 |
Flaring work..................................................................... |
29 |
Connection of piping - Outdoor ....................................... |
30 |
Installation ....................................................................... |
33 |
Installation of The Main Unit............................................ |
34 |
Connecting the Cable between Indoor Unit, Distributor |
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Unit and Outdoor Unit ......................................................... |
35 |
Connect the cable to the Indoor unit. .............................. |
35 |
Connect the cable to the Distributor unit ......................... |
36 |
Connect the cable to the Outdoor unit............................. |
37 |
Connection method of the connecting cable(Example)... |
39 |
Checking the Drainage, Insulating the Pipe and Special |
|
Piping Applications ............................................................. |
40 |
Checking the drainage .................................................... |
40 |
Insulating the Pipe and Special Piping Applications........ |
40 |
Air Purging and Evacuation................................................ |
41 |
Leak Checking................................................................. |
41 |
Evacuation....................................................................... |
42 |
Charging............................................................................... |
43 |
Installation PI485 ................................................................. |
45 |
Test Running ........................................................................ |
46 |
Function................................................................................ |
47 |
Dip S/W Setting............................................................... |
47 |
Forced Cooling Operation ............................................... |
48 |
Wiring Error Check.......................................................... |
49 |
Saving Power Consumption............................................ |
49 |
Night Quiet Mode ............................................................ |
50 |
Mode Lock....................................................................... |
51 |
Pcb Display(18/24k Model Only)..................................... |
52 |
Combination indoor units................................................... |
53 |
Required Tools
οLevel gauge
οScrew driver
οElectric drill
οHole core drill (ø50mm)
οFlaring tool set
οSpecified torque wrenches 1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m (different depending on model No.)
οAdjustable wrench
οA glass of water
οScrew driver
οHexagonal wrench(4mm)
οRefrigerant Gas Leak Detector
οVacuum pump
οGauge manifold
οOwner's manual
οThermometer
οRemote Control Holder
ENGLISH
Installation Manual 3
Installation Parts Provided |
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Installation Parts Provided |
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[Wall mounted / ART COOL Mirror] |
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Type 1 |
Type 2 |
Type 3 |
Type 4 |
Installation plate |
Installation plate |
Installation plate |
Installation plate |
Type "B" screw |
Type "B" screw |
Type "B" screw Type "C" screw |
Type "B" screw Type "C" screw |
Type "A" screw |
Type "A" screw |
Type “A” screw |
Type “A” screw |
Remote control holder |
Remote control holder |
Remote control holder |
Remote control holder |
[Ceiling Concealed Duct Type]
Name |
Clamp metal |
Insulation for |
Screws for |
Clamp |
Conduit |
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fitting |
duct flanges |
Bracket |
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Quantity |
1 EA |
1 set |
1 set |
8 EA |
1 EA |
Shape |
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for gas pipe |
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Conduit Bracket |
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for liquid pipe |
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Screw(M4) 2EA |
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[Ceiling Cassette Type] |
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Name |
Drain hose |
Clamp metal |
Washer for |
Clamp |
Conduit |
Insulation for |
Remote |
hanging backet |
Bracket |
fitting |
control holder |
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Quantity |
1 EA |
1 EA |
8 EA |
8 EA |
1 EA |
1 SET |
1 EA |
Shape |
for gas pipe |
Conduit Bracket |
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Screw(M4) 2EA |
for liquid pipe |
4 Multi Air Conditioner
Product Introduction
Safety Precautions
To prevent the injury of the user or other people and property damage, the following instructions must be followed.
νBe sure to read before installing the air conditioner.
νBe sure to observe the cautions specified here as they include important items related to safety.
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 The meanings of the symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
ν Installation
Always perform grounding.
•Otherwise, it may cause electrical shock.
Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
Donʼt use a power cord, a |
For installation of the product, |
plug or a loose socket which |
always contact the service cen- |
is damaged. |
ter or a professional installation |
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agency. |
• Otherwise, it may cause a fire or |
• Otherwise, it may cause a fire, |
electrical shock. |
electrical shock, explosion or in- |
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jury. |
Always install an air leakage |
Do not keep or use flammable |
breaker and a dedicated |
gases or combustibles near |
switching board. |
the air conditioner. |
• If the electrical part cover of the |
• No installation may cause a fire |
• Otherwise, it may cause a fire or |
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indoor unit and the service panel |
and electrical shock. |
the failure of product. |
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of the outdoor unit are not at- |
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tached securely, it could result in |
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a fire or electric shock due to |
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dust, water, etc. |
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Ensure that an installation frame of the out- |
Do not disassemble or repair the product ran- |
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door unit is not damaged due to use for a long |
domly. |
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time. |
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• It may cause injury or an accident. |
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• It will cause a fire or electrical shock. |
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η The figure can be changed according to model.
ENGLISH
Installation Manual 5
Safety Precautions
Do not install the product at a place that there is concern of falling down.
• Otherwise, it may result in personal injury.
Use caution when unpacking and installing.
• Sharp edges may cause injury.
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress 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.
ν Operation
Do not share the outlet with |
Do not use the damaged |
other appliances. |
power cord. |
• It will cause an electric shock or |
• Otherwise, it may cause a fire |
a fire due to heat generation. |
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 |
Do not use the power cord |
necessary, holding the head |
near the heating tools. |
of the plug and do not touch |
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it with wet hands. |
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• Otherwise, it may cause a fire |
• Otherwise, it may cause a fire |
or electrical shock. |
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 |
Hold the plug by the head |
into electrical parts. |
when taking it out. |
• Otherwise, it may cause the |
• It may cause electric shock |
failure of machine or electrical |
and damage. |
shock. |
|
Never touch the metal parts of the unit when removing the filter.
•They are sharp and may cause injury.
Do not step on the |
Do not place a heavy object |
indoor/outdoor unit and do |
on the power cord. |
not put anything on it. |
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• It may cause an injury through |
• Otherwise, it may cause a fire |
dropping of the unit or falling |
or electrical shock. |
down. |
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Take care so that children may not step on the outdoor unit.
• Otherwise, children may be seriously injured due to falling down.
When the product is submerged into water, always contact the service center.
•Otherwise, it may cause a fire or electrical shock.
6 Multi Air Conditioner
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Safety Precautions |
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CAUTION |
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ν Installation |
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Install the drain hose to ensure that drain |
Install the product so that the noise or hot |
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can be securely done. |
wind from the outdoor unit may not cause |
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any damage to the neighbors. |
• Otherwise, it may cause water leakage. |
• Otherwise, it may cause dispute with the neigh- |
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bors. |
Always inspect gas leakage after the instal- |
Keep level parallel in installing the product. |
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lation and repair of product. |
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• Otherwise, it may cause the failure of product. |
• Otherwise, it may cause vibration or water leak- |
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age. |
ν 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 |
Do not place obstacles around the flow inlet |
such as preserving animals vegetables, preci- |
or outlet. |
sion machine, or art articles. |
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• Otherwise, it may damage your properties. |
• Otherwise, it may cause the failure of appliance |
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or an accident. |
ENGLISH
Installation Manual 7
Safety Precautions
Installation of Indoor, Outdoor Unit
Read completely, then follow step by step.
Select the best location
Indoor unit
1.Do not have any heat or steam near the unit.
2.Select a place where there are no obstacles in front of the unit.
3.Make sure that condensation drainage can be conveniently routed away.
4.Do not install near a doorway.
5.Ensure the unit is unobstructed, allow proper space on all sides according to the arrows and distance measurements in the figures.
6.Use a Metal Detector or Metal Scanner to locate studs to prevent unnecessary damage to the wall.
[Wall mounted / ART COOL Mirror]
More than 100(3-15/16)
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200(7-7/8) |
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More than |
Recommended |
100(3-15/16) |
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Unit:mm(inch)
Note : remove obstructions to prevent blockage of airflow path
[Ceiling Concealed Duct Type] |
[Ceiling Cassette Type] |
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Top view |
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Inspection hole |
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[600(23-5/8) x 600(23-5/8)] |
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Control box |
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10(13/32) |
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Ceiling |
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or more |
Ceiling Board |
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Ceiling Board |
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less |
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600 |
600 |
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/16) or |
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(23-5/8) |
(23-5/8) |
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1800(70leastAt -7/8) 3600(141-23/32) or less |
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500(19-11/16) |
1000(39-3/8) or more |
500(19-11/16) |
-13 |
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300(11 |
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or more |
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Unit:mm(inch) |
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or more |
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Front view |
30(1-3/16) |
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±3(1/8) |
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Floor |
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H=20(25/32) or more |
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Ceiling |
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[ART COOL Gallery] |
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Service Space
A
B
*Suitable dimention “H” is necessary to get a slope to drain as show in the figure.
Capacity(Btu/h class) |
A |
B |
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9/12k |
600(23-5/8) |
900(35-7/16) |
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18k |
600(23-5/8) |
1100(43-5/16) |
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More than More than 
200(7-87/100)
500(19-11/16)
More than More than 
500(19-11/16)
1500(59-11/200)
Unit:mm(inch)
8 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Outdoor unit
1.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.
2.Ensure the unit is unobstructed, allow proper space on all sides according to the arrows and distance measurements in the figures.
3.Do not place animals and plants in the path of the warm air.
4.Take the air conditioner weight into account and select a place where noise and vibration are minimum.
5.Select a place so that the warm air and sound from the air conditioner does not disturb neighbors.
Rooftop Installations:
If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the roof structure and anchoring method are adequate for the unit location. Consult local codes regarding rooftop mounting.
more than 600 (23 21/32)
more than |
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300 (11 13/16) |
more than |
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300 (11 13/16) |
more than |
more than |
600 (23 21/32) |
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700 (27 9/16) |
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Unit:mm(inch) |
ENGLISH
Installation Manual 9
Installation of Indoor, Outdoor Unit
Seaside Applications and Installation
1.Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2.Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3.If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind.
1.Selecting the location(Outdoor Unit)
1)If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided. Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind |
Sea wind |
2) In case, to install the outdoor unit on the seaside, set up a windbreaker/barrier, to lessen the unit's exposure to sea air
Windbreaker/Barrier
Sea wind
3) Select a well-drained place.
•It should be strong enough (like concrete) to obstruct the wind from the sea.
•The height and width should be more than 150% of the outdoor unit.
•A minimum of 70cm (27 1/16 inches)
of space between outdoor unit and the windbreak for easy air flow.
Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger using water is recommended.
10 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Seasonal Wind And Cautions In Winter
-Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well.
-Get ready for seasonal wind or snow in winter even in other areas.
-Install a suction and discharge duct not to let in snow or rain.
-Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes on the air suction hole, the system may malfunction. If it is installed at snowy area, attach the hood to the system.
-Install the outdoor unit at the higher installation console by 50cm than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall.
-Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm, always remove snow for operation.
1.The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the product. (If width of the frame is wider than that of the product, snow may accumulate)
2.Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
ENGLISH
Installation Manual 11
Installation of Indoor, Outdoor Unit
Piping length and elevation
Multi Piping Type
Unit : m(ft)
Outdoor Unit |
Max total length |
Max length of |
Min length of |
Max Elevation |
Max elevation |
Max.Combination |
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of all pipes |
between each |
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Capacity |
each pipe |
each pipe |
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between indoor |
of Indoor unit |
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(A+B)/(A+B+C)/ |
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indoor unit and |
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(Btu/h class) |
(A/B/C/D) |
(A/B/C/D) |
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units (h2) |
(Btu/h class) |
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(A+B+C+D) |
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outdoor unit |
(h1) |
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18k |
50(164) |
25(82) |
3(10) |
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15(49) |
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7.5(25) |
24k |
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24k |
75(246) |
25(82) |
3(10) |
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15(49) |
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7.5(25) |
33k |
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36k |
75(246) |
25(82) |
3(10) |
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15(49) |
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7.5(25) |
48k |
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Pipe Diameter |
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Indoor unit Capacity (Btu/h class) |
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Unit : mm(inch) |
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Gas |
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Liquid |
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9k |
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9.52(3/8) |
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6.35(1/4) |
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12k |
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9.52(3/8) |
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6.35(1/4) |
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18k |
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12.7(1/2) |
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6.35(1/4) |
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A |
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h2
h1
B
Multiple Piping Type
CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability.
12 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Distributor Piping Type |
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Unit : m(ft) |
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Max total length |
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Max length |
Max length |
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Min length of |
Max Elevation |
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Max Eleva- |
Max Combi- |
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Outdoor Unit |
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Max length |
each pipe |
Between each |
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tion |
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Capacity |
of all pipes |
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of |
of |
of each |
(Main / |
indoor unit and |
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Between in- |
nation |
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(Main + Branch |
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Main pipe |
Branch |
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of indoor |
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(Btu/h class) |
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Branch pipe |
Branch |
outdoor unit |
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door |
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pipes) |
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(A+B+C) |
pipes |
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pipes) |
(h1) |
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(h2) |
unit |
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54k |
145(476) |
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55(180) |
90(295) |
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15(49) |
3(10) |
30(98) |
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15(49) |
73k |
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Pipe Diameter |
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Indoor unit Capacity (Btu/h class) |
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Unit : mm(inch) |
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Gas |
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Liquid |
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9k |
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9.52(3/8) |
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6.35(1/4) |
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12k |
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9.52(3/8) |
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6.35(1/4) |
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18k |
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12.7(1/2) |
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6.35(1/4) |
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Distributor |
Branch Pipe |
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C |
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Distributor
h2
h1
B
Main Pipe
A
ENGLISH
CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability.
Installation Manual 13
Installation
Installation
[Wall mounted / ART COOL Mirror]
Connecting the piping
# Standard / Artcool Mirror Type
1.Prepare the indoor unit's piping and drain hose for installation through the wall.
2.Remove the plastic tubing retainer(see the illustration on the right) and pull the tubing and drain hose away from chassis.
3.Route the indoor tubing and the drain hose to the required piping hole position.
4.Insert the piping, drain hose, and the connecting cable into the piping hole.
5.Insert the connecting cable into the indoor unit.
•Don't connect the cable to the indoor unit.
•Make a small loop with the cable for easy connection later.
6.Tape the tubing and drain hose.
Drain pipe |
Tape |
Connecting |
pipe |
Drain hose |
For right rear piping |
For left rear piping |
7.Indoor unit installation
•Hang the indoor unit from the hooks at the top of the installation plate.
•Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall.
Indoor unit
Spacer
Installation plate
80(3 5/32)
14 Multi Air Conditioner
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Installation |
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# Standard Libero / Artcool Libero Type |
ENGLISH |
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1. |
Pull the screw cap at the bottom of the |
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indoor unit |
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2. |
Remove the chassis cover from the unit |
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by loosing screws |
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Chassis cover |
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3.Pull back the tubing holder.
4.Remove pipe port cover and positioning the tubing
5.Indoor unit installation
1)Hook the indoor unit onto the upper portion of the installation plate.( engage the three hooks at the top of the indoor unit with the upper edge of the installation plate) Ensure that the hooks are properly seated on the installation plate by moving it left and right
2)Unlock the tubing holder from the chassis and mount between the chassis and installation plate in order to separate the bottom side of the indoor unit from the wall
Indoor unit back side view
Pipe Port
Left
holder |
Right |
Backwards |
Installation plate |
Tubing Holder |
Installation Manual 15
Installation
Connecting the piping to the indoor unit and drain hose to drain pipe.
1.Align the center of the pipes and sufficiently tighten the flare nut by hand.
2.Tighten the flare nut with a wrench.
Outside diameter |
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Torque |
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mm |
inch |
N. m |
kgf.m |
lbf.ft |
Ø6.35 |
1/4 |
14~18 |
1.4~1.8 |
10~13 |
Ø9.52 |
3/8 |
34~42 |
3.5~4.3 |
25~31 |
Ø12.7 |
1/2 |
49~61 |
5.0~6.2 |
36~45 |
Ø15.88 |
5/8 |
69~82 |
7.0~8.4 |
51~60 |
|
|
|
|
|
Ø19.05 |
3/4 |
100~120 |
10.0~12.2 |
73~88 |
|
|
|
|
|
3.Next, extend the indoor unit's drain hose. Then attach the drain pipe.
Indoor unit tubing |
Flare nut Pipes |
|
Open-end wrench (fixed) |
|
Flare nut |
Wrench |
Connection pipe |
Indoor unit tubing |
|
Drain pipe
Indoor unit drain hose
Adhesive Vinyl tape(narrow)
Installation Information. For left piping. Follow the instruction below.
Good case
• Press on the upper side of clamp and unfold the tubing to slowly downward.
Bad case
• Bending the pipe from right to left may cause damage to the tubing.
16 Multi Air Conditioner
Installation
Wrap the insulation material around the connecting portion.
1.Overlap the connection pipe insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there is no gap.
2.Wrap the area which accommodates the rear piping housing section with vinyl tape.
Plastic bands Insulation material
Connection pipe
Indoor unit pipe Vinyl tape (wide) 
Wrap with vinyl tape
Pipe
Vinyl tape(narrow)
3.Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing section.
Reroute the pipings and the drain hose across the back of the chassis.
Finishing the indoor unit installation
# Standard / Artcool Mirror Type
1.Remove the spacer.
2.Ensure that the hooks are properly seated on the installation plate by moving it left and right.
3.Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).
# Standard Libero / Artcool Libero Type
1.Mount the tubing holder in the original positon.
2.Ensure that the hooks are properly seated on the installation plate by moving it left and right.
3.Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots (clicking sound).
4.Finish the assembly by screwing the unit to the installation plate by using two pieces of type "C" screws. And assemble a chassis cover.
Vinyl tape(wide)
Drain hose
Piping for passage through piping hole
Connecting
Drain hose
If the split type Indoor unit is installed in a wall having hole or opening near by or back side of the unit, then the air from other side of the wall can come inside the condition space through that hole / opening. That air can cause unwanted dew / water droplet formation when it comes in contact with body of the indoor unit. So all hole or opening on the wall must be blocked very well to avoid water dropping from the body of the unit.
ENGLISH
Installation Manual 17
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