LG ARUN024GSS4 INSTALLATION MANUAL

ENGLISH

FRANÇAIS

ESPAÑOL

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 1

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.

Original instruction

MFL67798024

Rev.00_061518

Copyright © 2015 - 2018 LG Electronics Inc. All Rights Reserved.

www.lg.com

2

ENGLISH

• 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 :

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:

IMPORTANT SAFETY INSTRUC­TIONS

READ ALL INSTRUCTIONS BEFORE USING THE AP­PLIANCE.

Always comply with the following precautions to avoid dangerous situ­ations and ensure peak performance of your product

WARNING

It can result in serious injury or death when the directions are ignored

CAUTION

It can result in minor injury or product damage when the directions are
ignored

WARNING

• Installation or repairs made by unqualified persons can result in haz-

ards to you and others.

• 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

• Have all electric work done by a licensed electrician according to "Elec­tric Facility Engineering Standard" and "Interior Wire Regulations" and the
instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is per-

formed improperly, electric shock or fire may result.

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage, electric

shock, or fire.

• Always ground the product.

- There is risk of fire or electric shock.

• Always intstall a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric shock.

• For re-installation of the installed product, always contact a dealer or an
Authorized Service Center.

- There is risk of fire, electric shock, explosion, or injury.

• Do not install, remove, or re-install the unit by yourself (customer).

- There is risk of fire, electric shock, explosion, or injury.

• Do not store or use flammable gas or combustibles near the air condi­tioner.

- There is risk of fire or failure of product.

• Use the correctly rated breaker or fuse.

- There is risk of fire or electric shock.

• Prepare for strong wind or earthquake and install the unit at the speci­fied place.

- Improper installation may cause the unit to topple and result in injury.

• Do not install the product on a defective installation stand.

- It may cause injury, accident, or damage to the product.

• 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.

• When installing and moving the air conditioner to another site, do not
charge it with a different refrigerant from the refrigerant specified on
the unit.

- If a different refrigerant or air is mixed with the original refrigerant, the

refrigerant cycle may malfunction and the unit may be damaged.

• Do not reconstruct to change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection device is

shorted and operated forcibly, or parts other than those specified by
LGE are used, fire or explosion may result.

• Ventilate before operating air conditioner when gas leaked out.

- It may cause explosion, fire, and burn.

• Securely install the cover of control box and the panel.

- If the cover and panel are not installed securely, dust or water may

enter the outdoor unit and fire or electric shock may result.

• If the air conditioner is installed in a small room, measures must be
taken to prevent the refrigerant concentration from exceeding the safety
limit when the refrigerant leaks.

- Consult the dealer regarding the appropriate measures to prevent the

safety limit from being exceeded. Should the refrigerant leak and cause
the safety limit to be exceeded, harzards due to lack of oxygen in the
room could result.

Operation

• Do not damage or use an unspecified power cord.

- There is risk of fire, electric shock, explosion, or injury.

• Use a dedicated outlet for this appliance.

- There is risk of fire or electrical shock.

• Be cautious that water could not enter the product.

- There is risk of fire, electric shock, or product damage.

• Do not touch the power switch with wet hands.

- There is risk of fire, electric shock, explosion, or injury.

• When the product is soaked (flooded or submerged), contact an Authorized
Service Center.

- There is risk of fire or electric shock.

• Be cautious not to touch the sharp edges when installing.

- It may cause injury.

• Take care to ensure that nobody could step on or fall onto the outdoor unit.

- This could result in personal injury and product damage.

• Do not open the inlet grille of the product during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)

- There is risk of physical injury, electric shock, or product failure.

!

!

!

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 2

3

CAUTION

Installation

• Always check for gas (refrigerant) leakage after installation or repair of product.

- Low refrigerant levels may cause failure of product.

• Do not install the product where the noise or hot air from the outdoor unit could dam­age the neighborhoods.

- It may cause a problem for your neighbors.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Use power cables of sufficient current carrying capacity and rating.

- Cables that are too small may leak, generate heat, and cause a fire.

• 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.

• Keep the unit away from children. The heat exchanger is very sharp.

- It can cause the injury, such as cutting the finger. Also the damaged fin may result

in degradation of capacity.

• When installting the unit in a hospital, communication station, or similar place, pro­vide sufficient protection against noise.

-

The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air conditioner to
operate erroneously, or fail to operate. On the other hand, the air conditioner
may affect such equipment by creating noise that disturbs medical treatment or
image broadcasting.

• Do not install the product where it is 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.

Operation

• Do not use the air conditioner in special environments.

-

Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air condi­tioner or damage its parts.

• Do not block the inlet or outlet.

- It may cause failure of appliance or accident.

• Make the connections securely so that the outside force of the cable may not be ap­plied to the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

• 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, or personal injury.

•

Install and insulate the drain hose to ensure that water is drained away properly based on
the installation manual.

- A bad connection may cause water leakage.

• Be very careful about product transportation.

- Only one person should not carry the product if it weighs more than 20kg(44lbs).

-

Some products use PP bands for packaging. Do not use any PP bands for a means
of transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so may cut your fingers.

- When transporting the outdoor unit, suspending it at the specified positions on the

unit base. Also support the outdoor unit at four points so that it cannot slip side­ways.

• Safely dispose of the packing materials.

-

Packing materials, such as nails and other metal or wooden parts, may cause stabs or
other injuries.

-

Tear apart and throw away plastic packaging bags so that children may not play with
them. If children play with a plastic bag which was not torn apart, they face the risk of
suffocation.

• Turn on the power at least 6 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in

severe damage to internal parts. Keep the power switch turned on during the opera­tional season.

• Do not touch any of the refrigerant piping during and after operation.

- It can cause a burn or frostbite.

• Do not operate the air conditioner with the panels or guards removed.

- Rotating, hot, or high-voltage parts can cause injuries.

• Do not directly turn off the main power switch after stopping operation.

- Wait at least 5 minutes before turning off the main power switch. Otherwise it may

result in water leakage or other problems.

•

Auto-addressing should be done in condition of connecting the power of all indoor and out­doour units. Auto-addressing should also be done in case of changing the indoor unit PCB.

• Use a firm stool or ladder when cleaning or maintaining the air conditioner.

- Be careful and avoid personal injury.

• Do not insert hands or other objects through the air inlet or outlet while the air condi­tioner is plugged in.

- There are sharp and moving parts that could cause personal injury.

TABLE OF CONTENTS

2 TIPS FOR SAVING ENERGY
2 IMPORTANT SAFETY INSTRUCTIONS
4 INSTALLATION PROCESS
4 OUTDOOR UNITS INFORMATION
4 ALTERNATIVE REFRIGERANT R410A
5 SELECT THE BEST LOCATION
5 INSTALLATION SPACE

7 Air guide work

7 LIFTING METHOD
8 INSTALLATION

8 The location of the Anchor bolts
8 Foundation for Installation
9 Preparation of Piping
10 Plumbing materials and storage methods

10 REFRIGERANT PIPING INSTALLATION

10 Precautions on Pipe connection / Valve operation

11 PIPE CONNECTIONS BETWEEN INDOOR

AND OUTDOOR UNIT

11 Preparation Work
11 Pipe Drawing Out during Single / Series connection
12 Selection of Refrigerant Piping
13 Refrigerant piping system
15 Refrigerant charging
15 Distribution Method
16 Branch pipe Fitting
17 Leak Test and Vacuum drying
18 Vacuum Mode
18 Thermal insulation of refrigerant piping

19 ELECTRICAL WIRING

19 CAUTION
20 Control box and connecting position of wiring
20 Communication and Power Cables
20 Wiring of main power supply and equipment capacity
21 Field Wiring
22 Checking the setting of outdoor units
22 Automatic Addressing
23 Group Number setting
23 Cool & Heat selector
23 Static pressure compensation mode
24 Night Low Noise Function
24 Setting the ODU address
24 Snow removal & rapid defrost
24 Target pressure adjusting
25 Base Pan Heater setting
26 Self-Diagnosis Function

28 CAUTION FOR REFRIGERANT LEAK

28 Introduction
28 Checking procedure of limiting concentration

29 INSTALLATION GUIDE AT THE SEASIDE

29 Model Designation
29 Airborne Noise Emission

!

ENGLISH

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 3

4

ENGLISH

The foundation must be level even

Outdoor unit foundation work

Avoid short circuits and ensure
sufficient space is allowed for service

Installation of outdoor unit

Refer to automatic addressing flowchart

Automatic addressing of indoor unit

In the final check for 24hours at 3.8 MPa(38.7 kgf/cm

2

) there

must be no drop in pressure.

Airtight test

Multiple core cable must not be used.
(suitable cable should be selected)

Electrical work

(connection circuits and drive circuits)

Make sure no gaps are left where
the insulating materials are joined

Heat insulation work

Make sure airflow is sufficient

Duct work

Adjust to downward gradient

Drain pipe work

Special attention to dryness,
cleanness and tightness

Refrigerant piping work

Check model name to
make sure the fitting
is made correctly

Installation of indoor unit

Take account of gradient
of drain piping

Sleeve and insert work

Make connection clearly between outdoor, indoor,
remote controller and option.

Preparation of contract drawings

Indicate clearly who will be responsible for switch setting.

Determination of division work

The vacuum pump used must have a capacity of reaching at least
5 torr, more than 1 hour

Vacuum drying

Recharge correctly as calculated in this manual. and record the
amount of added refrigerant

Additional charge of refrigerant

Make sure there are no gaps left between the facing materials
used on the ceiling

Fit facing panels

Run each indoor unit in turn to make sure the pipe work
has been fitted correctly

Test run adjustment

Explain the use of the system as clearly as possible to your customer and
make sure all relevant documentation is in order

Transfer to customer with explanation

Preheat the crank case with the electrical heater for more than 6 hours.

CAUTION

• The above list indicates the order in which the individual work opera­tions are normally carried out but this order may be varied where
local conditions warrants such change.

• The thickness of the piping should comply with the relevant local
and national regulations for the designed pressure 3.8MPa(551.1psi).

• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the refrigerant is
charged in its gaseous state, its composition changes and the sys­tem will not work properly.)

!

CAUTION

• Ratio of the connectable Indoor Units to the Outdoor: Within
50 ~ 160%

• Ratio of running Indoor Units to the Outdoor: Within 10 ~ 100%

• A combination operation over 100% cause to reduce each in­door unit capacity.

!

CAUTION

• The wall thickness of the piping should comply with the relevant
local and national regulations for the designed pressure

3.8MPa(551.1psi).

• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.
If the refrigerant is charged in its gaseous state, its composition
changes and the system will not work properly.

• Do not place the refrigerant container under the direct rays of the
sun to prevent it from exploding.

• For high-pressure refrigerant, any unapproved pipe must not be
used.

• Do not heat pipes more than necessary to prevent them from
softening.

• Be careful not to install wrongly to minimize economic loss
because it is expensive in comparison with R22.

!

ALTERNATIVE REFRIGERANT R410A

The refrigerant R410A has the property of higher operating pressure in
comparison with R22.
Therefore, all materials have the characteristics of higher resisting
pressure than R22 ones and this characteristic should be also consid­ered during the installation.
R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone
depletion potential (ODP) of R410A is 0.

OUTDOOR UNITS INFORMATIONINSTALLATION PROCESS

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5

ENGLISH

Air inlet grille

700

[Unit : mm]

Turn the air outlet side toward the
building's wall, fence or windbreak screen.

WARNING

Fix the outdoor unit firmly with anchor bolt or it may fall and hurt
people. (refer to ‘Foundation for installation’)

!

• The following values are the least space for installation. If any service
area is needed for service according to field circumstance, obtain
enough service space.

• The unit values is inch & mm

2 Ton

Proper clearance for the outdoor unit coil is critical for proper unit oper­ation. When installing the outdoor unit, consider service, inlet and out­let and minimum allowable space requirements as illustrated in the
diagrams below and on the next few pages.

Minimum Clearance Requirements for the Multi V S 24K Outdoor Unit
Specific clearance requirements in the diagram below are for Multi V S
24,000 Btu/h (ARUN024GSS4) systems. Figure 40 shows the overall
minimum clearances that must be observed for safe operation and ad­equate airflow around the outdoor unit. When placing the outdoor unit
under an overhang, awning, sunroof or other “roof-like structure”, ob­serve the clearance requirements as shown in Cases 1 and 2 in for
height in relation to the unit. This clearance ensures that heat radiation
from the condenser is not restricted around the unit.
Adhere to all clearance requirements if installing the unit on a roof. Be
sure to level the unit and ensure that the unit is adequately anchored.
Consult local codes for rooftop mounting requirements. To have suc­cessful service access to the outdoor unit, see Figure 40 for minimum
spacing. When installing multiple outdoor units, see Cases 4 and 5 in
for correct spacing requirements.

Outdoor Unit Service Access and Allowable Clearances Diagram.

24K Outdoor Unit Service Access and Allowable Clearances Diagram
Legend.

INSTALLATION SPACESELECT THE BEST LOCATION

Select space for installing outdoor unit, which will meet the following
conditions:

• No direct thermal radiation from other heat sources

• No possibility of annoying neighbors by noise from unit

• No exposition to strong wind

• With strength which bears weight of unit

• Note that drain flows out of unit when heating

• With space for air passage and service work shown next

• Because of the possibility of fire, do not install unit to the space
where generation, inflow, stagnation, and leakage of combustible
gas is expected.

• Avoid unit installation in a place where acidic solution and spray (sul­fur) are often used.

• Do not use unit under any special environment where oil, steam and
sulfuric gas exist.

• It is recommended to fence round the outdoor unit in order to pre­vent any person or animal from accessing the outdoor unit.

• If installation site is area of heavy snowfall, then the following direc­tions should be observed.

- Make the foundation as high as possible.

- Fit a snow protection hood.

Select installation location considering following conditions to avoid
bad condition when additionally performing defrost operation.

• Install the outdoor unit at a place well ventilated and having a lot of
sunshine in case of installing the product at a place with a high hu­midity in winter (near beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.

• Performance of heating will be reduced and preheat time of the in­door unit may be lengthened in case of installing the outdoor unit in
winter at following location:

- Shade position with a narrow space

- Location with much moisture in neighboring floor.

- Location with much humidity around.

- Location where ventilation is good. It is recommended to install the
outdoor unit at a place with a lot of sunshine as possible as.

- Location where water gathers since the floor is not even.

When installing the outdoor unit in a place that is constantly exposed to a
strong wind like a coast or on a high story of a building, secure a normal
fan operation by using a duct or a wind shield.

• Install the unit so that its discharge port faces to the wall of the build­ing.
Keep a distance 500mm or more between the unit and the wall sur­face.

• Supposing the wind direction during the operation season of the air
conditioner, install the unit so that the discharge port is set at right
angle to the wind direction.

A

B

D

G

C

G

20 inches or less

Case 1 Case 2

20 inches or less

C

D

E

D

F

Case 4

Case 3

D

B

B

Case 5

NOTE

!

If the outdoor unit is installed between standard and minimum clearances, ca­pacity decreases approximately 10%.

NOTE

!

Do not place the unit where ani­mals and/or plants will be in the
path of the warm air, or where the
warm air and / or noise will disturb
neighbors.

Unit: Inch / mm A B C D E F G

Case 1

Standard 12 / 300 24 / 600 - 12 / 300 - - -

Minimum 4 / 100 10 / 250 - 4 / 100 - - 40 / 1000

Case 2

Standard - - 20 / 500 - - - -

Minimum - - 14 / 350 - - - 40 / 1000

Case 3

Standard - - 20 / 500 12 / 300 - - -

Minimum - - 14 / 350 4 / 100 - - -

Case 4

Standard - - - 12 / 300 24 / 600 - -

Minimum - - - 4 / 100 8 / 200 79 / 2000 -

Case 5

Standard - 24 / 600 - 12 / 300 - - -

Minimum - 10 / 250 - 4 / 100 - - -

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 5

6

ENGLISH

In case of obstacles on the discharge side

1. Stand alone installation

500(19-5/8) or more

500(19-5/8)

or less

1000 (39-1/4)

or more

500(19-5/8) or more

1000 (39-1/4)

or more

100(3-15/16)

or more

1000 (39-1/4)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

500(19-5/8) or less

H

L

100(3-15/16)

or more

500(19-5/8)

or more

1000 (39-1/4)

or more

500(19-5/8) or less

L

H

250 (9-7/8)

or more

1000 (39-1/4)

or more

2. Collective installation

In case of obstacles on the suction and the
discharge side

Obstacle height of discharge side is higher than the unit

1. Stand alone installation

2. Collective installation

Unit:mm(inch)

Unit:mm(inch)

Unit:mm(inch)

Unit:mm(inch)

L

H

1000 (39-1/4)

or more

300(11-7/8)

or more

100(3-15/16)

or more

500(19-5/8)

or less

L

H

1250(49-1/4)

or more

300(11-7/8)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

H

L

100(3-15/16)

or more

500(19-5/8)

or less

500(19-5/8) or less

H

L

1000 (39-1/4)

or more

300(11-7/8)

or more

1000 (39-1/4)

or more

H

L

300(11-7/8)

or more

1500(59)

or more

100(3-15/16)

or more

300(11-7/8)

or more

500(19-5/8)

or less

1000 (39-1/4)

or more

H

L

1500(59)

or more

100(3-15/16)

or more

L > H L > H

Obstacle height of discharge side is lower than the unit

1. Stand alone installation

2. Collective installation

L ≤ HL ≤ H

L ≤ HL ≤ H

L > H L > H

In case of obstacles on the suction side

1. Stand alone installation

100(3-15/16)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

500(19-5/8)

or less

100(3-15/16)
or more

100(3-15/16)
or more

100(3-15/16)

or more

500(19-5/8)

or less

1000 (39-1/4)

or more

150(3-15/16)
or more

150(3-15/16)
or more

150(3-15/16)

or more

2. Collective installation

100(3-10/11)
or more

200(7-7/8)

or more

1000 (39-1/4)

or more

300(11-7/8)

or

more

500(19-5/8)

or less

1000 (39-1/4)

or more

100(3-15/16)
or more

200(7-7/8)

or more

1000 (39-1/4)

or more

300(11-7/8)

or more

Unit:mm(inch)

Unit:mm(inch)

3, 4, 4.4, 5 Ton

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7

ENGLISH

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.

- 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)

- Don't install the suction hole and discharge hole of the Outdoor
Unit facing the seasonal wind.

• When carrying the suspended, unit pass the ropes between legs of
base panel under the unit.

• Always lift the unit with ropes attached at four points so that impact
is not applied to the unit.

• Attach the ropes to the unit at an angle of 40° or less.

• Use only accessories and parts which are of the designated specifica­tion when installing.

LIFTING METHOD

Air guide work

In case of out door unit is located outdoor cabin of apartment or flats,
then the efficiency can drop and system pressure increases thus finally
damaging the compressor or other components in the system by heat
short circuit.

• Do not use bended louver. It disturbs the air circulation.

• The opening ratio is at least 80%

• Louver angle is 0-20 degree

• Louver pitch will be as more than 100mm(3.9 inch)

• If you have a insect control net, consider the shielded area and static
pressure loss

• Check the static pressure range of outdoor unit fan.
Then, install air guide in the range of static pressure.

Secure minimum intake area

When the intake area is not secured can efficiency drop and products
may not be operating

• Minimum intake area (For reference)

Less than
20 degrees

Louver pitch
100 mm or more

350mm
(13.8 inch)
or more

CAUTION

Be very careful while carrying the product.

•

Do not have only one person carry product if it is more than

20kg(44lbs).

• PP bands are used to pack some products. Do not use them as
a mean for transportation because they are dangerous.

• Do not touch heat exchanger fins with your bare hands. Other­wise you may get a cut in your hands.

• Tear plastic packaging bag and scrap it so that children cannot
play with it. Otherwise plastic packaging bag may suffocate chil­dren to death.

• When carrying in Outdoor Unit, be sure to support it at four
points. Carrying in and lifting with 3-point support may make
Outdoor Unit unstable, resulting in a fall.

• Use 2 belts of at least 8m(26.2 ft) long.

• Place extra cloth or boards in the locations where the casing
comes in contact with the sling to prevent damage.

•

Hoist the unit making sure it is being lifted at its center of gravity.

!

Unit : m2(ft2)

Model ARUN024GSS4

ARUN060GSS4
ARUN053GSS4
ARUN048GSS4
ARUN038GSS4

Minimum intake area 0.7 (7.5) 1.2 (15.5)

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 7

Air outlet grille Intake hole

Corner

Handle

Always hold the unit by the corners, as holding
it by the side intake holes on the casing may
cause them to deform.

Sub line

Less than

Less than

20 degrees
150mm
(5.9 inch) or
more

300mm
(11.8 inch)
or more

350mm

350mm
(13.8 inch)

(13.8 inch)
or more

or more

Intake
area

Air guide

Air guide duct

Wind speed : 1.5m/s(4.9 ft/s)

20 degrees

Louver pitch

Louver pitch
100 mm or more

100 mm(3.9 inch)
or more

A

40° or less

WARNING

8

ENGLISH

• Fix the unit tightly with bolts as shown below so that unit will not fall
down due to earthquake or gust.

• Use the H-beam support as a base support

• Noise and vibration may occur from the floor or wall since vibration is
transferred through the installation part depending on installation sta­tus. Thus, use anti-vibration materials (cushion pad) fully (The base
pad shall be more than 200 mm(7-7/8 inch)).

At least 200mm

(7-7/8 inch)

Ⓐ The corner part must be fixed firmly. Otherwise, the support for the

installation may be bent.

Ⓑ Get and use M10 Anchor bolt.
Ⓒ Put Cushion Pad between the outdoor unit and ground support for

the vibration protection in wide area.

Ⓓ Space for pipes and wiring (Pipes and wirings for bottom side)
Ⓔ H-beam support
Ⓕ Concrete support

CAUTION

• Be sure to remove the Pallet(Wood Support) of the bottom
side of the outdoor unit Base Pan before fixing the bolt. It
may cause the unstable state of the outdoor settlement,
and may cause freezing of the heat exchanger resulting in
abnormal operations.

• Be sure to remove the Pallet(Wood Support) of the bottom
side of the outdoor unit before welding. Not removing Pal­let(Wood Support) causes hazard of fire during welding.

If it is necessary to prevent the unit from falling over, install as shown
in the figure.

• Prepare all 4 wires as indicated in the drawing

• Unscrew the top plate at the 4 location indicated A and B

• Put the screws through the nooses and screw them back tight

WARNING

• Install where it can sufficiently support the weight of the out­door unit.
If the support strength is not enough, the outdoor unit may drop
and hurt people.

• Install where the outdoor unit may not fall in strong wind or
earthquake.
If there is a fault in the supporting conditions, the outdoor unit
may fall and hurt people.

• Please take extra cautions on the supporting strength of the
ground, water outlet treatment(treatment of the water flowing
out of the outdoor unit in operation), and the passages of the
pipe and wiring, when making the ground support.

• Do not use tube or pipe for water outlet in the Base pan. Use
drainage instead for water outlet. The tube or pipe may freeze
and the water may not be drained.

Pallet(Wood Support)

- Remove before Installation

!

!

Foundation for Installation

• Install at places where it can endure the weight and vibration/noise
of the outdoor unit.

• The outdoor unit supports at the bottom shall have width of at least
100mm under the Unit’s legs before being fixed.

• The outdoor unit supports should have minimum height of 200mm.

• Anchor bolts must be inserted at least 75mm.

a
be

e

cd

a 920 (36.2)
b 618 (24.3)
c 330 (13)
d 360 (14.2)
e 151 (5.9)

[Unit : mm(inch)]

The location of the Anchor bolts

A : Location of the 2 fixation

holes on the front side of
the unit

B : Location of the 2 fixation

holes on the rear side of
the unit

C : wires

INSTALLATION

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 8

For outdoor units
should not be
supported only
by the corner
supports.

At least 100mm

(3-15/16 inch)

At least 100mm

(3-15/16 inch)

At least 100mm

(3-15/16 inch)

At least 100mm

(3-15/16 inch)

Center of the Unit

At least 100mm

15/16 inch)

(3-

Center of the Unit

At least 100mm

(3-15/16 inch)

Spring washer

Frame

H-Beam

75 (3)

100(3-15/16)

Nut

Concrete

base

200 (7-7/8)

Anti-vibration

materials

75 (3)

Unit : mm(inch)

Four bolt are
required
3 thread ridges

200 (7-7/8)

A

B

C

9

ENGLISH

Flaring work

- Carry out flaring work using flaring tool as shown below.

Firmly hold copper tube in a bar(or die) as indicated dimension in the
table above.

Check

- Compare the flared work with figure below.

- If flare is noted to be defective, cut off the flared section and do flar­ing work again.

Burrs removal

- Completely remove all burrs from the cut cross section of pipe/tube.

- Put the end of the copper tube/pipe to downward direction as you re­move burrs in order to avoid to let burrs drop in the tubing.

Inclined

Inside is shining without scratches.

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

Flare shape and flare nut tightening torque

Opening shutoff valve

Precautions when connecting pipes

- See the following table for flare part machining dimensions.

- When connecting the flare nuts, apply refrigerant oil to the inside and

outside of the flares and turn them three or four times at first. (Use
ester oil or ether oil.)

-

See the following table for tightening torque.(Applying too much torque may
cause the flares to crack.)

- After all the piping has been connected, use nitrogen to perform a

gas leak check.

1 Remove the cap and turn the valve counter clockwise with the

hexagon wrench.

2 Turn it until the shaft stops.

Do not apply excessive force to the shutoff valve. Doing so may
break the valve body, as the valve is not a backseat type. Always
use the special tool.

3 Make sure to tighten the cap securely.

Pipe size

[mm(inch)]

Tightening

Torque[N.m(lbs.ft)]

A [mm(inch)] Flare shape

Ø9.52(3/8) 38±4(28±3.0) 12.8(0.5)~13.2(0.52)

Ø12.7(1/2) 55±6(41±4.4) 16.2(0.64)~16.6(0.65)

Ø15.88(5/8) 75±7(55±5.2) 19.3(0.76)~19.7(0.78)

CAUTION

• Always use a charge hose for service port connection.

•

After tightening the cap, check that no refrigerant leaks are present

.

• When loosening a flare nut, always use two wrenches in
combination, When connecting the piping,
always use a spanner and torque wrench
in combination to tighten the flare nut.

• When connecting a flare nut, coat the
flare(inner and outer faces) with oil for
R410A(PVE) and hand tighten the nut
3 to 4 turns as the initial tightening.

Union

!

Insulation of shutoff valve

1 Use the heat insulation material for the refrigerant piping which has

an excellent heat-resistance (over 120°C).

2 Precautions in high humidity circumstance:

This air conditioner has been tested according to the "ISO Condi­tions with Mist" and confirmed that there is not any default. How­ever, if it is operated for a long time in high humid atmosphere
(dew point temperature: more than 23°C), water drops are liable to
fall. In this case, add heat insulation material according to the fol­lowing procedure:

- Heat insulation material to be prepared... EPDM (Ethylene Propy­lene Diene Methylene)-over 120°C the heat-resistance tempera­ture.

- Add the insulation over 10mm thickness at high humidity environ­ment.

Closing shutoff valve

1

Remove the cap and turn the valve clockwise with the hexagon wrench.

2 Securely tighten the valve until the shaft contacts the main body seal.
3 Make sure to tighten the cap securely.

* For the tightening torque, refer to the table on the below.

Tightening torque

Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.

Cut the pipes and the cable

- Use the accessory piping kit or the pipes purchased locally.

- Measure the distance between the indoor and the outdoor unit.

- Cut the pipes a little longer than measured distance.

- Cut the cable 1.5m longer than the pipe length.

Pipe

Reamer

Point down

Copper

tube

90

Slanted Uneven Rough

Preparation of Piping

Shut off

valve size

[mm(inch)]

Tightening torque N·m(lbs·ft) (Turn clockwise to close)

Shaft(valve body)

Cap

(Valve lid)

Service

port

Flare nut

Gas line pip­ing attached

to unit

Closed Opened Hexagonal

Ø6.35(1/4)

6.0 ±0.6

(4.4±0.4)

5.0 ±0.5

(3.7±0.4)

4mm

(0.16inch)

17.6±2.0

(13.0±1.5)

12.7±2

(9.4±1.5)

16±2(12±1.5)

-

Ø9.52(3/8)

38±4(28±3.0)

Ø12.7(1/2)

10.0 ±1.0
(7.4±0.7)

20.0±2.0

(14.8±1.5)

55±6

(41±4.4)

Ø15.88(5/8)

12.0 ±1.2
(8.9±0.9)

5mm

(0.24inch)

25.0±2.5

(18.4±1.8)

75±7

(55±5.1)

Ø19.05(3/4)

14.0 ±1.4

(10.3±1.0)

110±10

(81.1±7.4)

Ø22.2(7/8)

30.0 ±3.0

(22.1±2.2)

8mm

(0.31inch)

-

25±3.0

(18.5±2.2)

Ø25.4(1.0)

Pipe diameter

Inch (mm)

A inch (mm)

Wing nut type Clutch type

Ø1/4 (Ø6.35)

0.04~0.07 (1.1~1.8) 0~0.02 (0~0.5)

Ø3/8 (Ø9.52)

Ø1/2 (Ø12.7)

Ø5/8 (Ø15.88)

1,MFL67798024,영영 18. 7. 19. 영영 2:13 Page 9

<Wing nut type> <Clutch type>

Bar

"A"

Copper pipe

90°

A

±2

4

5°

±

R=0.4~0.8

2

Indoor unit

Fastening band
(accessory)

Refrigerant piping

Thermal insulator
(accessory)