LG A4UQ306FA2 User manual

P/NO : MFL39817320 www.lg.com

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

Multi Type Air Conditioner Installation Manual

CONTENTS

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

Outdoor Unit ........................................................18~20

Checking the Drainage, Forming the Pipings

and Long pipe Setting ........................................21~24

Air Purging and Evacuation...............................24~26

Installation PI485.......................................................26

Test running...............................................................28

Installation guide at the seaside..............................29

oLevel gauge

oScrew driver

oElectric drill

oHole core drill (ø65mm)

oHorizontal meter

oFlaring tool set

oSpecified torque wrenches

1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m

(different depending on model No.)

oSpanner .................Half union

oA glass of water

oScrew driver

oHexagonal wrench(4mm)

oGas-leak detector

oVacuum pump

oGauge manifold

oOwner's manual

oThermometer

oHolder Remote Control

Installation Requirements Required Tools

2Multi Air Conditioner

Installation Parts Provided

Standard Type

Installation plate

Type "B" screws

(2EA)

Type "A" screw Type "A" screw Type "A" and "C" screw Type "A" and "C" screw

Holder Remote Control

(6 EA) (8 EA) (5 EA) (2 EA) (5 EA) (2 EA)

Installation Manual 3

Installation Parts Provided

Safety Precautions

Do not disassemble or repair the product.

• Contact your dealer or service center.

Always earth the product.

• It will cause fire or electric shock.

Do not handle the flamable gas or explosive

materials near the product.

• Otherwise, it may cause fire or failure of

product.

Do not install where flamable gas could

leak.

• Otherwise, it may cause esplosion or fire.

Do not install the product on a defected

installation stand.

• Otherwise, It may cause injury or accident.

Be cautious when unpacking and installing

the product.

• Sharp edges could cause injury.

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.

For installation, always contact the dealer

or service center.

• Otherwise, it may cause fire, electric shock,

explosion or injury."

For electric work, contact the dealer or

service center.

• Otherwise, It will cause fire or electric shock.

To prevent injury to the user or other people and property damage, the following instructions

must be followed.

nIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness

is classified by the following indications.

nMeanings of symbols used in this manual are as shown below.

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

WARNING

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

4Multi Air Conditioner

Safety Precautions

Do not put the heater, etc. near the power

cable.

• Otherwise, it may cause fire and electric shock.

Cover the electric part.

• 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.

Do not step or put anyting on the product.

• Otherwise, it may cause personal injury and

failure of product.

Always inspect gas leakage after

installation and repair of product.

• Otherwise, it may cause failure of product.

Install the drain hose to ensure that drain

can be securely done.

• Otherwise, it may cause water leakage.

Keep the level even while installing the

product.

• Otherwise, it may cause vibration or 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.

Do not touch(operate) product with wet

hands.

• Otherwise, it may cause fire or electric shock.

If strange sound, smell or smoke come from

product, turn the breaker off.

• Otherwise, it may cause electric shock or fire.

CAUTION

Fix the outdoor unit on the floor.

• Otherwise, it can be blown away by the strong

wind. It will cause injury or accident.

Installation Manual 5

6Multi Air Conditioner

Installation of Indoor, Outdoor Unit

Read completely, then follow step by step.

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.

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.

Select the best location

More than

700mm

More than

300mm

More than

300mm

More than

600mm

Select the best location

More than 200mm

More than

100mm More than

100mm

More than 200mm

More than

100mm

More than

100mm

hThe figure may be slightly different according

to the model.

Installation Manual 7

Installation of Indoor, Outdoor Unit

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.

Chassis

Hook

Installation Plate

Type “A”

Chassis

Hook

Chassis

Hook

Installation Plate

Type “A”

Installation Plate

Type "A" Screws

Installation Plate

Chassis

Hook

Type "A" Screws

Ø70

133 95

Right

rear

piping

Left

rear

piping

Installation Plate

Place a level on raised tab

Unit Outline

217

175

442 442

Ø70

69 56

Right

rear

piping

Left

rear

piping

Installation Plate

Measuring Tape

Hanger

Place a level on raised tab

Unit Outline

207

105

460 570

Installation plate

Left rear piping Right rear piping

Ø70

133

Ø70

100

Installation plate

Ø70

110

Left rear piping Right rear piping

Fixing Installation Plate

(Unit : mm)

Indoor Type Capacity (kBtu/h) Type

Wall mounted 9,12 3

18,24 4

ART COOL Mirror 9,12 1

18,24 2

Branch Pipe

Main Pipe

Distributor

Multi Piping Type Distributor Type

Installation of Indoor, Outdoor Unit

Piping length and elevation

Multi Piping Type (Unit: m)

Distributor Type (Unit: m)

18 50 25 15 7.5

26 70 25 15 7.5

30 70 25 15 7.5

Capacity(kBtu/h) Total Length Max Length(A/B) Max Elevation

(h1)

In - In Elevation

(h2)

40 100 50 50 15 30 15

48 135 55 80 15 30 15

56 145 55 90 15 30 15

Capacity

(kBtu/h) Total Length

Max Main Pipe

Length (A/B)

Total Branch

Pipe Length

Max Branch

Pipe Length

Max Elevation

(h1)

In - In Elevation

(h2)

• 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.

Drill a hole in the wall

5-7mm

Indoor

WALL

Outdoor

Standard / Artcool Mirror type

8Multi Air Conditioner

Refrigerant charge

The calculation of the additional charge should be taken in account for the length of extra pipe.

• 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

Ex) A7UQ406FA1

abc

9k 9k 9k

■ Multiple Piping Models

■ Distributor type 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

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

Model Standard

length(m)

Max piping for

one room(m)

Max total Piping

Length(m)

Additional

Charge(g/m)

18 7.5 25 50 20

26 7.5 25 70 20

30 7.5 25 70 20

Multiple Piping Models

Model

Main Piping length Branch piping length

Standard

length(m)

Additional

refrigerant(g/m)

Standard

length(m)

Additional

refrigerant(g/m)

40 5 50 5 20

48 5 50 5 20

56 5 50 5 20

Distributor type Models

Installation Manual 9

Installation of Indoor, Outdoor Unit

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.

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)

Flaring work

• Carry out flaring work using flaring tool as shown

below.

• Firmly hold copper pipe in a die in the dimension

shown in the table above.

Copper

pipe

90°Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handle Red arrow mark

Cone

Yoke

Handle

Bar

"A"

mm inch mm

Ø6.35 1/4 1.1~1.3

Ø9.52 3/8 1.5~1.7

Ø12.7 1/2 1.6~1.8

Ø15.88 5/8 1.6~1.8

Ø19.05 3/4 1.9~2.1

Outside diameter A

10 Multi Air Conditioner

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