LG ARUV140LTS4 INSTALLATION MANUAL

P/NO : MFL67221407

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.your set and retain it for future reference.

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 condi-

tioner 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 :

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:

TIPS FOR SAVING ENERGY

ENGLISH

TIPS FOR SAVING ENERGY

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 hazards 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 mal-

function, property damage, personal injury and/or death.

Installation

• Have all electric work done by a licensed electrician according to "Electric Facility Engineering Stan-

dard" and "Interior Wire Regulations" and the instructions given in this manual and always use a spe-

cial circuit.

- If the power source capacity is inadequate or electric work is performed 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.

ENGLISH

• 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 mal-

function 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 ex-

ceeded. 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.

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

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 equip-

ment 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 per-

sonal 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 20 kg.

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.

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• 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.

2 TIPS FOR SAVING EN-

ERGY

3 IMPORTANT SAFETY IN-

STRUCTIONS

8 INSTALLATION

PROCESS

9 OUTDOOR UNITS IN-

FORMATION

16 ENVIRONMENT-

FRIENDLY ALTERNATIVE

REFRIGERANT R410A

17 SELECT THE BEST LO-

CATION

18 INSTALLATION SPACE

18 Individual Installation

20 LIFTING METHOD

21 INSTALLATION

21 The location of the Anchor bolts

22 Foundation for Installation

23 Preparation of Piping

26 Plumbing materials and storage meth-

ods

28 REFRIGERANT PIPING

INSTALLATION

28 Precautions on Pipe connection / Valve

operation

29 PIPE CONNECTIONS BE-

TWEEN INDOOR AND

OUTDOOR UNIT

29 Preparation Work

30 Pipe Drawing Out during Single / Series

connection

32 Refrigerant piping system

45 Refrigerant charging

46 Distribution Method

47 Branch pipe Fitting

51 Leak Test and Vacuum drying

53 Vacuum Mode

54 Thermal insulation of refrigerant piping

55 ELECTRICAL WIRING

55 Caution

57 Control box and connecting position of

wiring

58 Communication and Power Cables

59 Wiring of main power supply and

equipment capacity

60 Field Wiring

66 Checking the setting of outdoor units

67 Automatic Addressing

70 Group Number setting

71 Cool & Heat selector

72 Static pressure compensation mode

73 Night Low Noise Function

74 Overall defrost mode

75 Setting the ODU address

76 Snow removal & rapid defrost

77 Target pressure adjusting

78 Self-Diagnosis Function

89 CAUTION FOR REFRIG-

ERANT LEAK

89 Introduction

89 Checking procedure of limiting concen-

tration

91 INSTALLATION GUIDE

AT THE SEASIDE

TABLE OF CONTENTS

ENGLISH

INSTALLATION PROCESS

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

) 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 car-

ried 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.

• 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.)

INSTALLATION PROCESS

OUTDOOR UNITS INFORMATION

Power Supply : 3Ø, 380V, 60Hz / 3Ø, 380 - 415V, 50Hz

Heat pump

Model Name : ARUN***LTS4

CAUTION

Notes : * We can guarantee the operation only within 130% Combination.

If you want to connect more than 130% combination, please contact us and dis-

cuss the requirement like below.

• If the operation of indoor unit is more than 130%, the airflow is operated as low in the all

indoor units.

• The number of ( ) means the number of Max. connectable indoor units, when the con-

nected capacity of indoor units is in the table above.

• The max allowable combination ratio for single LTN4 model is 160%.

Combination Ratio(50~200%)

Outdoor Number Connection Ratio

Single outdoor units 200%

Double outdoor units 160%

Triple outdoor units 130%

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

81012

ARUN080LTS4 ARUN100LTS4 ARUN120LTS4

(920×1,680×760)×1 (920×1,680×760)×1 (920×1,680×760)×1

195 × 1 201 × 1 201 × 1

6.5 6.5 6.5

9.52 (3/8) 9.52 (3/8) 12.7 (1/2)

19.05 (3/4) 22.2 (7/8) 28.58 (1 1/8)

13(20) 16(25) 20(30)

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

14 16 18 20

ARUN140LTS4 ARUN160LTS4 ARUN180LTS4 ARUN200LTS4

(1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×1

235 × 1 235 × 1 270 × 1 280 × 1

8.5 8.5 8.5 10

12.7 (1/2) 12.7 (1/2) 15.88 (5/8) 15.88 (5/8)

28.58 (1 1/8) 28.58 (1 1/8) 28.58 (1 1/8) 28.58 (1 1/8)

23(35) 26(40) 29(45) 32(50)

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

2 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

22 24 26 28

ARUN220LTS4 ARUN240LTS4 ARUN260LTS4 ARUN280LTS4

ARUN120LTS4 ARUN120LTS4 ARUN140LTS4 ARUN160LTS4

ARUN100LTS4 ARUN120LTS4 ARUN120LTS4 ARUN120LTS4

(920×1,680×760)×2 (920×1,680×760)×2 (1,240×1,680×760)×1 (1,240×1,680×760)×1

+ (920×1,680×760)×1 + (920×1,680×760)×1

201 × 2 201 × 2 235 × 1 + 201 × 1 235 × 1 + 201 × 1

6.5 × 2 6.5 × 2 8.5 + 6.5 8.5 + 6.5

15.88 (5/8) 15.88 (5/8) 19.05 (3/4) 19.05 (3/4)

28.58 (1 1/8) 34.9 (1 3/8) 34.9 (1 3/8) 34.9 (1 3/8)

35(44) 39(48) 42(52) 45(56)

Number of outdoor units

3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

46 48 50 52

ARUN460LTS4 ARUN480LTS4 ARUN500LTS4 ARUN520LTS4

ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4

ARUN160LTS4 ARUN180LTS4 ARUN200LTS4 ARUN200LTS4

ARUN100LTS4 ARUN100LTS4 ARUN100LTS4 ARUN120LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2

+ (920×1,680×760)×1 + (920×1,680×760)×1 + (920×1,680×760)×1 + (920×1,680×760)×1

280 × 1 + 235 × 1 + 201 × 1 280 × 1 + 270 × 1 + 201 × 1 280 × 2 + 201 × 1 280 × 2 + 201 × 1

10 + 8.5 + 6.5 10 + 8.5 + 6.5 (10 × 2) + 6.5 (10 × 2) + 6.5

19.05 (3/4) 19.05 (3/4) 19.05 (3/4) 19.05 (3/4)

41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8)

64 64 64 64

Number of outdoor units

2 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

30 32 34 36

ARUN300LTS4 ARUN320LTS4 ARUN340LTS4 ARUN360LTS4

ARUN180LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4

ARUN120LTS4 ARUN120LTS4 ARUN140LTS4 ARUN160LTS4

(1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×2 (1,240×1,680×760)×2

+ (920×1,680×760)×1 + (920×1,680×760)×1

270 × 1 + 201 × 1 280 × 1 + 201 × 1 280 × 1 + 235 × 1 280 × 1 + 235 × 1

8.5 + 6.5 10 + 6.5 10 + 8.5 10 + 8.5

19.05 (3/4) 19.05 (3/4) 19.05 (3/4) 19.05 (3/4)

34.9 (1 3/8) 34.9 (1 3/8) 34.9 (1 3/8) 41.3 (1 5/8)

49(60) 52(64) 55(64) 58(64)

Number of outdoor units

2 Outdoor Units 3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

38 40 42 44

ARUN380LTS4 ARUN400LTS4 ARUN420LTS4 ARUN440LTS4

ARUN200LTS4 ARUN200LTS4 ARUN180LTS4 ARUN200LTS4

ARUN180LTS4 ARUN200LTS4 ARUN140LTS4 ARUN140LTS4

ARUN100LTS4 ARUN100LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2

+ (920×1,680×760)×1 + (920×1,680×760)×1

280 × 1 + 270 × 1 280 × 2 270 × 1 + 235 × 1 + 201 × 1 280 × 1 + 235 × 1 + 201 × 1

10 + 8.5 10 × 2 (8.5 × 2) + 6.5 10 + 8.5 + 6.5

19.05 (3/4) 19.05 (3/4) 19.05 (3/4) 19.05 (3/4)

41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8)

61(64) 64 64 64

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

54 56 58 60

ARUN540LTS4 ARUN560LTS4 ARUN580LTS4 ARUN600LTS4

ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4

ARUN140LTS4 ARUN160LTS4 ARUN180LTS4 ARUN200LTS4

(1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3

280 × 2 + 235 × 1 280 × 2 + 235 × 1 280 × 2 + 270 × 1 280 × 3

(10 × 2) + 8.5 (10 × 2) + 8.5 (10 × 2) + 8.5 10 x 3

19.05 (3/4) 19.05 (3/4) 19.05 (3/4) 19.05 (3/4)

41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8) 41.3 (1 5/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

62 64 66 68

ARUN620LTS4 ARUN640LTS4 ARUN660LTS4 ARUN680LTS4

ARUN180LTS4 ARUN180LTS4 ARUN180LTS4 ARUN200LTS4

ARUN160LTS4 ARUN180LTS4 ARUN180LTS4 ARUN200LTS4

ARUN140LTS4 ARUN140LTS4 ARUN160LTS4 ARUN140LTS4

ARUN140LTS4 ARUN140LTS4 ARUN140LTS4 ARUN140LTS4

(1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4

270 × 1 + 235 × 3 270 × 2 + 235 × 2 270 × 2 + 235 × 2 280 × 2 + 235 × 2

8.5 x 4 8.5 x 4 8.5 x 4 (10 × 2) + (8.5 × 2)

22.2 (7/8) 22.2 (7/8) 22.2 (7/8) 22.2 (7/8)

44.5 (1 3/4) 44.5 (1 3/4) 53.98 (2 1/8) 53.98 (2 1/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

70 72 74 76

ARUN700LTS4 ARUN720LTS4 ARUN740LTS4 ARUN760LTS4

ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4

ARUN160LTS4 ARUN180LTS4 ARUN180LTS4 ARUN180LTS4

ARUN140LTS4 ARUN140LTS4 ARUN160LTS4 ARUN180LTS4

(1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4

280 × 2 + 235 × 2 280 × 2 + 270 × 1 + 235 × 1 280 × 2 + 270 × 1 + 235 × 1 280 × 2 + 270 × 2

(10 × 2) + (8.5 × 2) (10 × 2) + (8.5 × 2) (10 × 2) + (8.5 × 2) (10 × 2) + (8.5 × 2)

22.2 (7/8) 22.2 (7/8) 22.2 (7/8) 22.2 (7/8)

53.98 (2 1/8) 53.98 (2 1/8) 53.98 (2 1/8) 53.98 (2 1/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

7880

ARUN780LTS4 ARUN800LTS4

ARUN200LTS4 ARUN200LTS4

ARUN180LTS4 ARUN200LTS4

(1,240×1,680×760)×4 (1,240×1,680×760)×4

280 × 3 + 270 × 1 280 × 4

(10 × 3) + (8.5 × 1) 10 x 4

22.2 (7/8) 22.2 (7/8)

53.98 (2 1/8) 53.98 (2 1/8)

64 64

Model Name : ARUN220LTN4

OUTDOOR UNITS INFORMATION

ENGLISH

CAUTION

• Do not use ARUN220LTN4 in combination models.

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

ARUN220LTN4

(1,240×1,680×760)×1

280 × 1

15.88 (5/8)

28.58 (1 1/8)

35(44)

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

16 18 20

ARUV160LTS4 ARUV180LTS4 ARUV200LTS4

(1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×1

225 × 1 260 × 1 260 × 1

6 6.5 6.5

12.7(1/2) 15.88(5/8) 15.88(5/8)

28.58(1 1/8) 28.58(1 1/8) 28.58(1 1/8)

26(40) 29(45) 32(50)

Cooling only

Model Name : ARUV***LTS4

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

10 12 14

ARUV100LTS4 ARUV120LTS4 ARUV140LTS4

(920×1,680×760)×1 (920×1,680×760)×1 (920×1,680×760)×1

180 × 1 190 × 1 190 × 1

555

9.52(3/8) 12.7(1/2) 12.7(1/2)

22.2(7/8) 28.58(1 1/8) 28.58(1 1/8)

16(25) 20(30) 23(35)

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

2 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

22 24 26 28

ARUV220LTS4 ARUV240LTS4 ARUV260LTS4 ARUV280LTS4

ARUV120LTS4 ARUV120LTS4 ARUV140LTS4 ARUV160LTS4

ARUV100LTS4 ARUV120LTS4 ARUV120LTS4 ARUV120LTS4

(920×1,680×760)×2 (920×1,680×760)×2 (920×1,680×760)×2 (1,240×1,680×760)×1

+ (920×1,680×760)×1

180 × 1 + 190 × 1 190 × 2 190 × 2 225 × 1 + 190 × 1

5 × 2 5 × 2 5 × 2 6 + 5

15.88(5/8) 15.88(5/8) 19.05(3/4) 19.05(3/4)

28.58(1 1/8) 34.9(1 3/8) 34.9(1 3/8) 34.9(1 3/8)

35(44) 39(48) 42(52) 45(56)

Number of outdoor units

2 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

30 32 34 36

ARUV300LTS4 ARUV320LTS4 ARUV340LTS4 ARUV360LTS4

ARUV180LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

ARUV120LTS4 ARUV120LTS4 ARUV140LTS4 ARUV160LTS4

(1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×1 (1,240×1,680×760)×2

+ (920×1,680×760)×1 + (920×1,680×760)×1 + (920×1,680×760)×1

260 × 1 + 190 × 1 260 × 1 + 190 × 1 260 × 1 + 190 × 1 260 × 1 + 225 × 1

6.5 + 5 6.5 + 5 6.5 + 5 6.5 + 6

19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)

34.9(1 3/8) 34.9(1 3/8) 34.9(1 3/8) 41.3(1 5/8)

49(60) 52(64) 55(64) 58(64)

Number of outdoor units

2 Outdoor Units 3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

38 40 42 44

ARUV380LTS4 ARUV400LTS4 ARUV420LTS4 ARUV440LTS4

ARUV200LTS4 ARUV200LTS4 ARUV180LTS4 ARUV200LTS4

ARUV180LTS4 ARUV200LTS4 ARUV140LTS4 ARUV140LTS4

ARUV100LTS4 ARUV100LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×1 (1,240×1,680×760)×1

+ (920×1,680×760)×2 + (920×1,680×760)×2

260 × 2 260 × 2 260 × 1 + 190 × 1 + 180 × 1 260 × 1 + 190 × 1 + 180 × 1

6.5 × 2 6.5 × 2 6.5 + ( 5 × 2) 6.5 + ( 5 × 2)

19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)

41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8)

61(64) 64 64 64

Number of outdoor units

3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

46 48 50 52

ARUV460LTS4 ARUV480LTS4 ARUV500LTS4 ARUV520LTS4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

ARUV160LTS4 ARUV180LTS4 ARUV200LTS4 ARUV200LTS4

ARUV100LTS4 ARUV100LTS4 ARUV100LTS4 ARUV120LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2

+ (920×1,680×760)×1 + (920×1,680×760)×1 + (920×1,680×760)×1 + (920×1,680×760)×1

260 × 1 + 225 × 1 + 180 × 1 260 × 2 + 180 × 1 260 × 2 + 180 × 1 260 × 2 + 190 × 1

6.5 + 6 + 5 (6.5 × 2) + 5 (6.5 × 2) + 5 (6.5 × 2) + 5

19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)

41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8)

64 64 64 64

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

3 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

54 56 58 60

ARUV540LTS4 ARUV560LTS4 ARUV580LTS4 ARUV600LTS4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

ARUV140LTS4 ARUV160LTS4 ARUV180LTS4 ARUV200LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3

+ (920×1,680×760)×1

260 × 2 + 190 × 1 260 × 2 + 225 × 1 260 × 3 260 × 3

(6.5 × 2) + 5 (6.5 × 2) + 6 6.5 × 3 6.5 × 3

19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)

41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

70 72 74 76

ARUV700LTS4 ARUV720LTS4 ARUV740LTS4 ARUV760LTS4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

ARUV160LTS4 ARUV180LTS4 ARUV180LTS4 ARUV180LTS4

ARUV140LTS4 ARUV140LTS4 ARUV160LTS4 ARUV180LTS4

(1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×4 (1,240×1,680×760)×4

+ (920×1,680×760)×1 + (920×1,680×760)×1

260 × 2 + 225 × 1 + 190 × 1 260 × 3 + 190 × 1 260 × 3 + 225 × 1 260 × 4

(6.5 × 2) + 6 + 5 (6.5 × 3) + 5 (6.5 × 3) + 6 6.5 × 4

22.2(7/8) 22.2(7/8) 22.2(7/8) 22.2(7/8)

53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

62 64 66 68

ARUV620LTS4 ARUV640LTS4 ARUV660LTS4 ARUV680LTS4

ARUV180LTS4 ARUV180LTS4 ARUV200LTS4 ARUV200LTS4

ARUV160LTS4 ARUV180LTS4 ARUV180LTS4 ARUV200LTS4

ARUV140LTS4 ARUV140LTS4 ARUV140LTS4 ARUV140LTS4

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×2

+ (920×1,680×760)×2 + (920×1,680×760)×2 + (920×1,680×760)×2 + (920×1,680×760)×2

260 × 1 + 225 × 1 + 190 × 2 260 × 2 + 190 × 2 260 × 2 + 190 × 2 260 × 2 + 190 × 2

6.5 + 6 + (5 × 2) (6.5 × 2) + (5 × 2) (6.5 × 2) + (5 × 2) (6.5 × 2) + (5 × 2)

22.2(7/8) 22.2(7/8) 22.2(7/8) 22.2(7/8)

44.5(1 3/4) 44.5(1 3/4) 53.98(2 1/8) 53.98(2 1/8)

64 64 64 64

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

78 80 82 84

ARUV780LTS4 ARUV800LTS4 ARUV820LTN4 ARUV840LTN4

ARUV200LTS4 ARUV200LTS4 ARUV220LTN4 ARUV220LTN4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV220LTN4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

ARUV180LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4

(1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4

260 × 4 260 × 4 260 × 3 + 280 x 1 260 × 2 + 280 x 2

6.5 × 4 6.5 × 4 6.5 × 3 + 10 x 1 6.5 × 2 + 10 x 2

22.2(7/8) 22.2(7/8) 22.2(7/8) 22.2(7/8)

53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8)

64 64 64 64

OUTDOOR UNITS INFORMATION

ENGLISH

Number of outdoor units

2 Outdoor Units

3 Outdoor Units

Capacity (HP)

42 44 62 64

Model

Combination Unit

ARUV420LTN4 ARUV440LTN4 ARUV620LTN4 ARUV640LTN4

Independent Unit

ARUV220LTN4

ARUV200LTS4

ARUV220LTN4

ARUV200LTS4

ARUV220LTN4

ARUV200LTS4

Dimensions (WxHxD) mm

(1,240×1,680×760)×2 (1,240×1,680×760)×2 (1,240×1,680×760)×3 (1,240×1,680×760)×3

Net Weight kg 280 + 260 280 × 2 280 + 260 × 2 280 × 2 + 260

Precharged Refrigerant amount

10 + 6.5 10 × 2 10 + 6.5 × 2 10 × 2 + 6.5

Pipe Connctions

Liquid mm (inch) 19.05(3/4) 19.05(3/4) 22.2(7/8) 22.2(7/8)

Gas mm (inch) 41.3(1 5/8) 41.3(1 5/8) 44.5(1 3/4) 44.5(1 3/4)

Number of maximum connectable indoor units

64 64 64 64

CAUTION

•

Do not use ARUV220LTN4 in combinations other than the combinations as mentioned above.

Number of outdoor units

4 Outdoor Units

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

82 84 86 88

ARUV820LTN4 ARUV840LTN4 ARUV860LTN4 ARUV880LTN4

ARUV220LTN4 ARUV220LTN4 ARUV220LTN4 ARUV220LTN4

ARUV200LTS4 ARUV220LTN4 ARUV220LTN4 ARUV220LTN4

ARUV200LTS4 ARUV200LTS4 ARUV220LTN4 ARUV220LTN4

ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV220LTN4

(1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4 (1,240×1,680×760)×4

260 × 3 + 280 x 1 260 × 2 + 280 x 2 260 ×1 + 280 x 3 280 x 4

6.5 × 3 + 10 x 1 6.5 × 2 + 10 x 2 6.5 × 3 + 10 x 1 10 × 4

22.2(7/8) 22.2(7/8) 22.2(7/8) 22.2(7/8)

53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8) 53.98(2 1/8)

64 64 64 64

Model Name : ARUV220LTN4

Number of outdoor units

1 Outdoor Unit

Capacity (HP)

Model

Combination Unit

Independent Unit

Dimensions (WxHxD) mm

Net Weight kg

Precharged Refrigerant amount

Pipe Connctions

Liquid mm (inch)

Gas mm (inch)

Number of maximum connectable indoor units

ARUV220LTN4

(1,240×1,680×760)×1

280 × 1

15.88(5/8)

28.58(1 1/8)

35(44)

ENVIRONMENT-FRIENDLY ALTERNATIVE REFRIGERANT R410A

ENGLISH

CAUTION

• The wall thickness of the piping should comply with the relevant local and national regula-

tions for the designed pressure 3.8MPa

• 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.

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. These days the developed countries have approved it as the environment-friendly

refrigerant and encouraged to use it widely to prevent environment pollution.

ENVIRONMENT-FRIENDLY ALTERNATIVE RE-

FRIGERANT R410A

SELECT THE BEST LOCATION

ENGLISH

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, stag-

nation, 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 addi-

tionally performing defrost operation.

- Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of in-

stalling the product at a place With a high humidity in winter (near beach, coast, lake, etc.)

(Ex : Rooftop where there is always sunshine.)

SELECT THE BEST LOCATION

INSTALLATION SPACE

ENGLISH

Individual Installation

During the installation of the unit, consider service, inlet, and outlet and acquire the minimum

space as shown in the figures below.

Category Installation Space

Case 1

(10mm≤Side Space≤49mm)

Case 2

(Side Space≥49mm)

4 sides

are walls

A≥10

B≥300

C≥10

D≥500

A≥50

B≥100

C≥50

D≥500

A≥10

B≥300

C≥10

D≥500

E≥20

A≥50

B≥100

C≥50

D≥500

E≥100

A≥10

B≥300

C≥10

D≥500

E≥20

F≥600

A≥50

B≥100

C≥50

D≥500

E≥100

F≥500

A≥10

B≥300

C≥10

D≥300

E≥20

F≥500

A≥50

B≥100

C≥50

D≥100

E≥100

F≥500

A≥10

B≥500

C≥10

D≥500

E≥20

F≥900

A≥50

B≥500

C≥50

D≥500

E≥100

F≥600

Only 2

sides are

walls

A≥10

B≥300

A≥200

B≥300

E≥400

Limita-

tions on

the

height of

the wall

(Refer to

4 side

walls)

A E

• The height of the wall on the front side must be 1500mm or less.

• The height of the wall on the inlet side must be 500mm or less.

• There is no limit to the wall on the side.

• If the height of the walls on the front and the side are higher than

the limit, there must be additional space on the front and the

side.

- Additional Space on the front side by 1/2 of h1.

- Additional Space on the inlet side by 1/2 of h2

- h1 = A(Actual height) - 1500

- h2 = B(Actual height) - 500

INSTALLATION SPACE

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 (an-

nual 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 ex-

ceed 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.

LIFTING METHOD

ENGLISH

CAUTION

Be very careful while carrying the product.

• Do not have only one person carry product if it is more than 20 kg.

• 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 8 m 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.

• When carrying the suspended, unit pass the ropes under the unit and use the two suspension

points each at the front and rear.

• 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.

Locking points for

transportation ropes

Forklift Carrying Guide

Forklift Carrying Hole

LIFTING METHOD

INSTALLATION

ENGLISH

The location of the Anchor bolts

• 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.

At least 100mm

At least 100m

At least 100mm

Center of the Unit

For outdoor units should not

be supported only by the

corner supports.

Center of the Unit

730

760

6565

Unit : mm

At least 65At least 65

INSTALLATION

Chassis A(mm) B(mm)

UX2 920 792

UX3 1240 1102

INSTALLATION

ENGLISH

Foundation for Installation

• 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 200mm).

At least 200mm

Unit : mm

200

100

Ⓐ The corner part must be fixed firmly. Otherwise,

the support for the installation may be bent.

Ⓑ Get and use M10 Anchor bolt.

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 fix-

ing 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.

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 treat-

ment(treatment of the water flowing out of the outdoor unit in operation), and the pas-

sages 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

INSTALLATION

ENGLISH

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 pur-

chased 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.

Burrs removal

- Completely remove all burrs from the cut

cross section of pipe/tube.

- Put the end of the copper tube/pipe to down-

ward direction as you remove burrs in order

to avoid to let burrs drop in the tubing.

Flaring work

- Carry out flaring work using flaring tool as

shown below.

Firmly hold copper tube in a bar(or die) as in-

dicated 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.

Indoor unit

[kW(Btu/h]

Pipe " A "

Gas Liquid Gas Liquid

<5.6(19,100) 1/2" 1/4" 0.5~0.8 0~0.5

<16.0(54,600) 5/8" 3/8" 0.8~1.0 0.5~0.8

<22.4(76,400) 3/4" 3/8" 1.0~1.3 0.5~0.8

Copper

tube

Slanted Uneven Rough

Pipe

Reamer

Point down

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches.

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper ﬂaring =

Preparation of Piping

INSTALLATION

ENGLISH

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 tightening torque(N·cm) A(mm) flare shape

Ø9.52 38±4 12.8-13.2

R=0.4~0.8

Ø12.7 55±6 16.2-16.6

Ø15.88 75±7 19.3-19.7

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

INSTALLATION

ENGLISH

Insulation of shutoff valve

1 Use the heat insulation material for the refrigerant piping which has an excellent heat-resis-

tance (over 120°C).

2 Precautions in high humidity circumstance:

This air conditioner has been tested according to the "ISO Conditions with Mist" and con-

firmed that there is not any default. However, if it is operated for a long time in high humid at-

mosphere (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.

Indoor unit

Thermal insulator

(accessory)

Fastening band

(accessory)

Refrigerant piping

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

Shutoff

valve size

Tightening torque N·m(Turn clockwise to close)

Shaft(valve body) Cap(Valve lid) Service port Flare nut

Gas line piping attached to unit

Ø6.35

6±0.6

Hexagonal

wrench 4mm

29.4±2.9

12.7±2

16±2

Ø9.52 38±4

Ø12.7 9±0.9

53.9±5.8

55±6

Ø15.88 15±1.5

Hexagonal

wrench 6mm

75±7

Ø22.2

30±3

Hexagonal

wrench 10mm

- 25±3

Ø25.4

INSTALLATION

ENGLISH

Plumbing materials and storage methods

Pipe must be able to obtain the specified thickness and should be used with low impurities.

Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.

Should not be mixed with contaminations such as dust, moisture.

Refrigerant piping on three principles

Drying Cleanliness Airtight

Should be no moisture inside No dust inside.

There is no refrigerant leak-

age

Items

Moisture

Dust

Leakage

Cause

failure

- Significant hydrolysis of re-

frigerant oil

- Degradation of refrigerant

oil

- Poor insulation of the com-

pressor

- Do not cold and warm

- Clogging of EEV, Capillary

- Degradation of refrigerant

oil

- Poor insulation of the com-

pressor

- Do not cold and warm

- Clogging of EEV, Capillary

- Gas shortages

- Degradation of refrigerant

oil

- Poor insulation of the com-

pressor

- Do not cold and warm

Counter-

measure

- No moisture in the pipe

- Until the connection is

completed, the plumbing

pipe entrance should be

strictly controlled.

- Stop plumbing at rainy day.

- Pipe entrance should be

taken side or bottom.

- When removal burr after

cutting pipe, pipe entrance

should be taken down.

- Pipe entrance should be

fitted cap when pass

through the walls.

- No dust in the pipe.

- Until the connection is

completed, the plumbing

pipe entrance should be

strictly controlled.

- Pipe entrance should be

taken side or bottom.

- When removal burr after

cutting pipe, pipe entrance

should be taken down.

- Pipe entrance should be

fitted cap when pass

through the walls.

- Airtightness test should

be.

- Brazing operations to com-

ply with standards.

- Flare to comply with stan-

dards.

- Flange connections to

comply with standards.

INSTALLATION

ENGLISH

Nitrogen substitution method

Welding, as when heating without nitrogen substitution a large amount of the oxide film is

formed on the internal piping.

The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of

oil pump in compressor.

It prevents normal operation of the compressor.

In order to avoid this problem, Welding should be done after replacing air by nitrogen gas.

When welding plumbing pipe, the work is required.

1 Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):

Please use the following nitrogen pressure 0.02MPa

Oxygen – Promotes oxidative degradation of refrigerant oil.

Because it is flammable, it is strictly prohibited to use

Carbon dioxide – Degrade the drying characteristics of gas

Chevron Gas – Toxic gas occurs when exposed to direct flame.

2 Always use a pressure reducing valve.

3. Please do not use commercially available antioxidant.

The residual material seems to be the oxide scale is observed.

In fact, due to the organic acids generated by oxidation of the alcohol contained in the anti-

oxidants, ants nest corrosion occurs. (causes of organic acid  alcohol + copper + water +

temperature)

CAUTION

Regulator

Nitrogen gas

Pressure 0.02MPa less

Auxiliary valve

Taping

(Should not

contain air)

Welding Point

Note) should not block the outlet side.

When the internal pressure in pipe is abo

ve the atmospheric pressure, pinhole is o

ccurred and it is a leakage cause.

Oxide scale

Nitrogen

REFRIGERANT PIPING INSTALLATION

ENGLISH

Precautions on Pipe connection / Valve operation

Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the

refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor

unit. Flare connection for the indoor unit, and welding connection for the outdoor pipe and the

branching parts.

- Use hexagonal wrench to open/close the valve.

Gas pipe

Service Port

Liquid pipe

Refrigerant

Charging Port

CAUTION

• Please block the pipe knock outs of the front and side panels after installing the pipes.

(Animals or foreign objects may be brought in to damage wires.)

• Refrigerant Charging Port is not available in ARUV***LTS4/LTN4

WARNING

• Always careful not to leak the refrigerant during welding.

• The refrigerant generates poisonous gas harmful to human body if combusted.

• Do not perform welding in a closed space.

• Be sure to close the cap of the service port to prevent gas leakage after the work.

REFRIGERANT PIPING INSTALLATION

+ 64 hidden pages