LG A4UQ306FA2 Manual book
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
P/NO : MFL39817320 |
www.lg.com |
Multi Type Air Conditioner Installation Manual
CONTENTS
Installation Requirements |
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Installation Parts Provided......................................... |
3 |
Safety Precautions.................................................. |
4~5 |
Installation of indoor, outdoor unit ....................... |
6~9 |
Flaring work and connection of piping............. |
10~17 |
Connecting the Cable between Indoor Unit and |
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Outdoor Unit........................................................ |
18~20 |
Checking the Drainage, Forming the Pipings |
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and Long pipe Setting ........................................ |
21~24 |
Air Purging and Evacuation............................... |
24~26 |
Installation PI485....................................................... |
26 |
Test running............................................................... |
28 |
Installation guide at the seaside.............................. |
29 |
Required Tools
οLevel gauge
οScrew driver
οElectric drill
οHole core drill (ø65mm)
οHorizontal meter
οFlaring tool set
οSpecified torque wrenches 1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m (different depending on model No.)
οSpanner .................Half union
οA glass of water
οScrew driver
οHexagonal wrench(4mm)
οGas-leak detector
οVacuum pump
οGauge manifold
οOwner's manual
οThermometer
οHolder Remote Control
2 Multi Air Conditioner
Installation Parts Provided
Installation Parts Provided
Standard Type
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Installation plate |
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Type "B" screws |
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(2EA) |
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Type "A" screw |
Type "A" screw |
Type "A" and "C" screw |
Type "A" and "C" screw |
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(6 EA) |
(8 EA) |
(5 EA) |
(2 EA) |
(5 EA) |
(2 EA) |
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Holder Remote Control |
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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. |
ν Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
Do not disassemble or repair the product. |
Always earth the product. |
• Contact your dealer or service center. |
• It will cause fire or electric shock. |
Do not handle the flamable gas or explosive materials near the product.
Do not install where flamable gas could leak.
•Otherwise, it may cause fire or failure of product.
Do not install the product on a defected installation stand.
•Otherwise, It may cause injury or accident.
For installation, always contact the dealer or service center.
•Otherwise, it may cause fire, electric shock, explosion or injury."
•Otherwise, it may cause esplosion or fire.
Be cautious when unpacking and installing the product.
•Sharp edges could cause injury.
For electric work, contact the dealer or service center.
•Otherwise, It will cause fire or electric shock.
Do not use damaged power cable.
• It will cause fire or electric shock.
Always intstall a circuit breaker and main breaker.
•No installation may cause fire and electric shock.
4 Multi Air Conditioner
Safety Precautions
Do not touch(operate) product with wet hands.
•Otherwise, it may cause fire or electric shock.
Do not put the heater, etc. near the power cable.
If strange sound, smell or smoke come from product, turn the breaker off.
•Otherwise, it may cause electric shock or fire.
Cover the electric part.
• Otherwise, it may cause fire and electric shock. • Otherwise, it may cause fire or electric shock.
Do not turn the breaker on/off during operation.
• Otherwise, it may cause fire or electric shock.
Do not open the suction inlet of the product during operation.
•Otherwise, it may cause electric shock or failure.
Do not touch the metal parts of the product when removing the air filter.
•Otherwise, it may cause personal injury.
Fix the outdoor unit on the floor.
•Otherwise, it can be blown away by the strong wind. It will cause injury or accident.
Do not step or put anyting on the product.
•Otherwise, it may cause personal injury and failure of product.
CAUTION
Always inspect gas leakage after installation and repair of product.
•Otherwise, it may cause failure of product.
Keep the level even while installing the product.
•Otherwise, it may cause vibration or water leakage.
Install the drain hose to ensure that drain can be securely done.
•Otherwise, it may cause water leakage.
Do not install the product where the noise or hot wind from the outdoor unit could give any casualty to the neighborhood
•Otherwise, it may cause dispute with the neighborhoods.
Installation Manual 5
Installation of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit
Read completely, then follow step by step.
Select the best location
Indoor unit
1.Do not allow any heat or steam to be 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 outdoors.
4.Install as far away from a doorway as possible for better performance.
5.Ensure the unit is unobstructed, allow proper space on all sides according to the arrows and distance measurements in the figure at right.
6.Use a stud finder to locate studs to prevent unnecessary damage to the wall.
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 heat pump is not restricted.
2.Ensure the unit is unobstructed, allow proper space on all sides according to the arrows and distance measurements in the figure at right.
3.Do not allow animals or plants to remain the in path of the discharging 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 rooftop, be sure to level the unit. Ensure the rooftop and anchoring method are adequate for the unit location. Consult local codes regarding rooftop mounting.
More than 200mm
More than
100mm
More than 100mm
More than |
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100mm |
More than 200mm |
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More than 100mm
More than |
More than |
300mm |
300mm |
More than
700mm 
More than 
600mm
ηThe figure may be slightly different according to the model.
6 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Fixing Installation Plate
The wall you select should be strong and solid enough to prevent vibration
1.Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts.
•Mount the installation plate horizontally by aligning the centerline using a level.
2.Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically. Drilling the hole through the wall for piping connections must be done safely.
| <![if ! IE]> <![endif]>110 |
Installation plate |
<![if ! IE]> <![endif]>110 |
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Ø70 |
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Ø70 |
90 |
<Type 1> |
70 |
Left rear piping |
Right rear piping |
Installation plate
Ø70 |
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Ø70 |
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133 |
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100 |
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Left rear piping |
<Type 2> |
Right rear piping |
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Unit Outline |
Place a level on raised tab |
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442 |
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442 |
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Ø70 |
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Ø70 |
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Left |
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Installation Plate |
Right |
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rear |
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rear |
piping |
133 |
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95 |
piping |
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175 |
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217 |
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<Type 3> |
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Installation Plate |
Chassis |
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Hook |
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<Type 1> |
Type “A” |
Installation Plate
Chassis
Hook
<Type 2> |
Type “A” |
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Installation Plate
Type "A" Screws
Chassis
<Type 3> Hook 
Installation Plate
Type "A" Screws
Chassis
<Type 4> Hook 
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Unit Outline |
Place a level on raised tab |
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460 |
570 |
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Ø70 |
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Ø70 |
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Left |
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Installation Plate |
Right |
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Measuring Tape |
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rear |
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rear |
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56 |
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69 |
piping |
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piping |
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105 |
Measuring Tape |
207 |
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Hanger |
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<Type 4> |
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(Unit : mm)
Indoor Type |
Capacity (kBtu/h) |
Type |
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Wall mounted |
9,12 |
3 |
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18,24 |
4 |
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ART COOL Mirror |
9,12 |
1 |
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18,24 |
2 |
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Installation Manual 7
Installation of Indoor, Outdoor Unit
Drill a hole in the wall
•Drill the piping hole with a ø70mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.
Standard / Artcool Mirror type
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WALL |
Indoor |
Outdoor |
<![endif]>5-7mm
Piping length and elevation
Multi Piping Type |
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(Unit: m) |
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Capacity(kBtu/h) |
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Total Length |
Max Length(A/B) |
Max Elevation |
In - In Elevation |
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(h1) |
(h2) |
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18 |
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50 |
25 |
15 |
7.5 |
26 |
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70 |
25 |
15 |
7.5 |
30 |
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70 |
25 |
15 |
7.5 |
Distributor Type |
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(Unit: m) |
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Capacity |
Total Length |
Max Main Pipe |
Total Branch |
Max Branch |
Max Elevation |
In - In Elevation |
(kBtu/h) |
Length (A/B) |
Pipe Length |
Pipe Length |
(h1) |
(h2) |
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40 |
100 |
50 |
50 |
15 |
30 |
15 |
48 |
135 |
55 |
80 |
15 |
30 |
15 |
56 |
145 |
55 |
90 |
15 |
30 |
15 |
A |
Distributor |
Branch Pipe |
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A
Distributor
h2
h2
h1
h1
Main Pipe
B |
B |
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Multi Piping Type Distributor Type
8 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Refrigerant charge
The calculation of the additional charge should be taken in account for the length of extra pipe.
Multiple Piping Models
Model |
Standard |
Max piping for |
Max total Piping |
Additional |
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length(m) |
one room(m) |
Length(m) |
Charge(g/m) |
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18 |
7.5 |
25 |
50 |
20 |
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26 |
7.5 |
25 |
70 |
20 |
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30 |
7.5 |
25 |
70 |
20 |
Distributor type Models
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Main Piping length |
Branch piping length |
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Model |
Standard |
Additional |
Standard |
Additional |
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length(m) |
refrigerant(g/m) |
length(m) |
refrigerant(g/m) |
40 |
5 |
50 |
5 |
20 |
48 |
5 |
50 |
5 |
20 |
56 |
5 |
50 |
5 |
20 |
■ Multiple Piping Models
Additional charge (g) = ((A Room Installation Length – Standard Length ) x 20g/m
+ (B Room Installation Length – Standard Length ) x 20g/m +.. )
-CF(Correction Factor) x 150
CF = Max. number of connectable indoor unit – Total number of connected indoor unit
■ Distributor type Models
Additional charge (g) = (( Total Main piping Length - Main Standard Length ) x 50g/m
+(A Room Branch Length – Standard Length ) x 20g/m
+(B Room Branch Length – Standard Length ) x 20g/m
+(C Room Branch Length – Standard Length ) x 20g/m +.. ) - CF(Correction Factor) x 100
CF = Max. number of connectable indoor unit – Total number of connected indoor unit
Additional Charge Calculation Example-1
Ex) A7UQ406FA1
A A
C
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a |
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b |
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c |
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9k |
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9k |
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9k |
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B |
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d |
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e |
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•Total main pipe(A+B+C) = 30m
•Each branch pipe a = 10m
b = 8m c = 5m d = 3m e = 10m
Additional Charge
=((30-5) x 50 + (10-5) x 20 + (8-5) x 20
+(5-5) x 20 + (3-5) x 20 + (10-5) x 20) - (7-5) x 100 = 1270g
9k |
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9k |
Installation Manual 9
Flaring Work and Connection of Piping
Flaring Work and Connection of Piping
Flaring work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.
Cut the pipes and the cable.
1.Use the piping kit accessory or the pipes purchased locally.
2.Measure the distance between the indoor and the outdoor unit.
3.Cut the pipes a little longer than measured distance.
4.Cut the cable 1.5m longer than the pipe length.
Burrs removal
1.Completely remove all burrs from the cut cross section of pipe/tube.
2.Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing.
Copper |
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Slanted |
Uneven Rough |
pipe |
90° |
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Pipe |
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Reamer |
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Point down
Putting nut on
•Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal.
(not possible to put them on after flaring work)
Flare nut
Copper tube
Flaring work |
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• Carry out flaring work using flaring tool as shown |
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below. |
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<![if ! IE]> <![endif]>"A" |
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Handle |
• Firmly hold copper pipe in a die in the dimension |
Bar |
Bar |
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Yoke |
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shown in the table above. |
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Outside diameter |
A |
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Cone |
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mm |
inch |
mm |
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Copper pipe |
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Ø6.35 |
1/4 |
1.1~1.3 |
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Clamp handle |
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Ø9.52 |
3/8 |
1.5~1.7 |
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Red arrow mark |
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Ø12.7 |
1/2 |
1.6~1.8 |
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Ø15.88 |
5/8 |
1.6~1.8 |
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Ø19.05 |
3/4 |
1.9~2.1 |
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10 Multi Air Conditioner
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