Lg Arun115bt2 Installation Guide

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System

Outdoor Unit

INSTALLATION MANUAL

MODELS: ARUN/ARUV Series

website http://www.lgservice.com

IMPORTANT

• 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.

R410A

ENGLISH FRANÇAIS ESPAÑOL

2 Outdoor Unit

CAUTION

: Improper installation, adjustment, alteration, service or maintenance can void the warranty.

The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.

Safety Precautions

• Always wear safety eye wear and work gloves when installing equipment.

• Never assume electrical power is disconnected. Check with meter and equipment.

• Keep hands out of fan areas when power is connected to equipment.

• R-410A causes frostbite burns.

• R-410A is toxic when burned.

NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner

or prominently displayed near the indoor Furnace/Air Handler Unit.

When wiring:

Electrical shock can cause severe personal injury or death. Only a qualified, experienced electrician should attempt to wire this system.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

When transporting:

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger.

When installing...

... in a wall: Make sure the wall is strong enough to hold the unit's weight.

It may be necessary to construct a strong wood or metal frame to provide added support.

... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause

dripping and water damage to wall and floors.

... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid,

level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal

frame. Provide a suitable air baffle.

... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is

higher than drifting snow. Provide snow vents.

When connecting refrigerant tubing

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Check carefully for leaks before starting the test run.

When servicing

• Turn the power OFF at the main power box(mains) before opening the unit to check or repair

electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have

been left inside the unit being serviced.

Special warnings

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others. Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA 70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.

• 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.

IMPORTANT!

Please read this instruction sheet completely before installing the product.

This air conditioning system meets strict safety and operating standards. As the installer or service person,it is an important part of your job to install or service the system so it operates safely and efficiently.

Installation Manual 3

Safety Precautions

ARUV(N) Series Outdoor unit Installation Manual

TABLE OF CONTENTS

Safety Precautions.........................3

Installation Process .....................11

Outdoor units Information ..........12

Environment-friendly Alternative

Refrigerant R410A .......................14

Select the Best Location .............14

Installation Space ........................15

Lifting method ..............................19

Installation ....................................20

Refrigerant piping installation ....22

Electrical Wiring...........................47

Test Run........................................66

Caution For Refrigerant Leak .....79

Installation guide at the seaside .....81

ENGLISH

4 Outdoor Unit

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

■ Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

■ 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 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.

ENGLISH

Installation Manual 5

Safety Precautions

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.

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.

Gasolin

R22

R410A

R407C

6 Outdoor Unit

Safety Precautions

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.

ENGLISH

Installation Manual 7

Safety Precautions

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.

■ 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.

90˚

Gasolin

8 Outdoor Unit

Safety Precautions

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.

ENGLISH

Installation Manual 9

Safety Precautions

■ 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 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.

10 Outdoor Unit

Safety Precautions

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.

ENGLISH

Installation Manual 11

Installation Process

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 relationship between outdoor, indoor, remote controller, and option connections clear. (Prepare control circuit diagram)

Preparation of contract drawings

Indicate clearly who is to be responsible for switch settings

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.

• 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 wall 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.)

12 Outdoor Unit

Outdoor Units Information

Outdoor units Information

CAUTION: Ratio of the connectable Indoor Units to the Outdoor: Within 50 ~ 130%

Ratio of the running Indoor Units to the Outdoor: Within 10 ~ 100% A combination operation over 100% cause to reduce the total capacity.

Power Supply: Outdoor Unit (3Ø, 460V, 60Hz)

■ Heat pump

Unit System HP

Ton

Model

Product Charge kg(lbs) CF(Correction Factor) kg(lbs) Max. Connectable No. of Indoor Units Net Weight kg

lbs Dimensions mm (WxHxD) inch Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

1 Outdoor Unit 2 Outdoor Units

8101214161820

6.5 8.0 9.5 11.0 12.5 14.5 16.0

ARUN076DT2 ARUN096DT2 ARUN115DT2 ARUN134DT2 ARUN154DT2 ARUN173DT2 ARUN192DT2

ARUN096DT2 ARUN115DT2 ARUN076DT2 ARUN076DT2

8(17.6) 8(17.6) 8(17.6) 8(17.6) 8(17.6)

8+8(17.6+17.6) 8+8(17.6+17.6)

-1(-2.2) 0(0) 1(2.2) 2(4.4) 3(6.6) -1(-2.2) 0(0)

13 16 19 23 26 29 32

240 285 285 285 285 285+240 285+240 529 628 628 628 628 628+529 628+529

1,280x1,607x730 1,280x1,607x730 1,280x1,607x730 1,280x1,607x730 1,280x1,607x730 (1,280x1,607x730)x2 (1,280x1,607x730)x2

(50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16)

((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2)

9.52(3/8) 9.52(3/8) 12.7(1/2) 12.7(1/2) 12.7(1/2) 15.88(5/8) 15.88(5/8)

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

Unit System HP

Ton

Model

Product Charge kg(lbs) CF(Correction Factor) kg(lbs) Max. Connectable No. of Indoor Units Net Weight kg

lbs Dimensions mm (WxHxD) inch Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

2 Outdoor Units

22 24 26 28 30 32

17.5 19.0 20.5 22.5 24.0 25.5 ARUN211DT2 ARUN230DT2 ARUN250DT2 ARUN270DT2 ARUN290DT2 ARUN310DT2 ARUN134DT2 ARUN154DT2 ARUN134DT2 ARUN134DT2 ARUN154DT2 ARUN154DT2 ARUN076DT2 ARUN076DT2 ARUN115DT2 ARUN134DT2 ARUN134DT2 ARUN154DT2

8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6)

1(2.2) 2(4.4) 3(6.6) 4(8.8) 5(11.0) 6(13.2)

35 39 42 45 49 52

285+240 285+240 285x2 285x2 285x2 285x2

628+529 628+529 628x2 628x2 628x2 628x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2)

15.88(5/8) 15.88(5/8) 19.05(3/4) 19.05(3/4) 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) 34.9(1 3/8) 34.9(1 3/8)

Installation Manual 13

Outdoor Units Information

ENGLISH

Power Supply: Outdoor Unit (3Ø, 208/230V, 60Hz)

■ Heat pump

Unit System HP

Ton

Model

Product Charge kg(lbs) CF(Correction Factor) kg(lbs) Max. Connectable No. of Indoor Units Net Weight kg

lbs Dimensions mm (WxHxD) inch Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

1 Outdoor Unit 2 Outdoor Units

8101216

6.5 8.0 9.5 11.0

ARUN076BT2 ARUN096BT2 ARUN115BT2 ARUN154BT2

ARUN076BT2 ARUN076BT2

8(17.6) 8(17.6) 8(17.6) 8+8(17.6+17.6)

-1(-2.2) 0(0) 1(2.2) -2(-4.4) 13 16 19 26

285 285 285 285+285 628 628 628 628+628

1,280x1,607x730 1,280x1,607x730 1,280x1,607x730

(1,280x1,607x730)x2

(50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16) (50-3/8 x 63-5/16 x 28-11/16)

((50-3/8 x 63-5/16 x 28-11/16) x 2)

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

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

Unit System HP

Ton

Model

Product Charge kg(lbs) CF(Correction Factor) kg(lbs) Max. Connectable No. of Indoor Units Net Weight kg

lbs Dimensions mm (WxHxD) inch Connecting Pipes Liquid Pipes[mm(inch)]

Gas Pipes[mm(inch)]

2 Outdoor Unit

18 20 22 24

14.5 16.0 17.5 19.0 ARUN173BT2 ARUN192BT2 ARUN211BT2 ARUN230BT2 ARUN096BT2 ARUN096BT2 ARUN115BT2 ARUN115BT2 ARUN076BT2 ARUN096BT2 ARUN096BT2 ARUN115BT2

8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6)

-1(-2.2) 0(0) 1(2.2) 2(4.4) 29 32 35 39

285+285 285+285 285+285 285+285 628+628 628+628 628+628 628+628

(1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2 (1,280x1,607x730)x2

((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2) ((50-3/8 x 63-5/16 x 28-11/16) x 2)

15.88(5/8) 15.88(5/8) 15.88(5/8) 15.88(5/8)

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

14 Outdoor Unit

Environment-friendly Alternative Refrigerant R410A

Select 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.

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

uct at a place with a high humidity in winter (neare beach, coast, lake, etc). (Ex) Rooftop where sunshine always shines.

2. 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: (1) Shade position with a narrow space (2) Location with much moisture in neighboring floor. (3) Location with much humidity around. (4) Location where water gathers since the floor is not even.

• 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 Refrigerant R410A

CAUTION:

• The wall 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.

• 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.

Installation Manual 15

Installation Space

ENGLISH

Installation Space

Individual Installation

■ Basic space required

A space of at least 250mm(9-13/16 inch) is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 915mm(36 inches) should be provided, the same as at the front.

915mm(36 inches) or more (Control box is open/close type)

250mm(9-13/16 inch) or more

Top discharge (open in principle)

Front inlet (open in principle)

Rear inlet (open in principle)

Control Box

Front Side

Rear Side

Control Box

Front Side

Rear Side

915mm(36 inches) or more (Control box is open/close type) 250mm(9-13/16 inch) or more 150mm(5-7/8 inch) from the wall

Front Side

Rear Side

Front Side

Rear Side

< Side view >

< Top view >

< Side view >

< Top view >

250mm(9-13/16 inch) or more (350mm(13-3/4 inch)or more at the coastal area.) 150mm(5-7/8 inch) from the wall

Front Side

Rear Side

Front Side

Rear Side

< Side view >

< Top view >

CAUTION

Wall height(H) must not exceed height of the product. If the wall height is higher than the whole height of product by (h), Add (h) to

, .

CAUTION

Wall height(H) must not exceed height of the product. If the wall height is higher than the whole height of product by (h), Add (h) to , .

■ When inlet air enters from right and left sides of unit

16 Outdoor Unit

Installation Space

45° or more

200mm(7-7/8 inch) or more

250mm(9-13/16 inch) or more

Air guide

Air outlet guide (Procured at the site)

250mm(9-13/16 inch) or more

< Front view >

< Side view >

< Air guide >

587.6(23-1/8)587.6(23-1/8)

372.5(14-11/16)

390(15-3/8)

125(4-15/16)

723.5(28-1/2)

■ When unit is surrounded by walls

915mm(36 inches) or more (Control box is of a open/close type)

250mm(9-13/16 inch) or more

Front Side

Rear Side

Front Side

Rear Side

■ When there is an obstruction above the unit

Installation Manual 17

Installation Space

ENGLISH

Collective / Continuous installation

Space required for collective installation and continuous installation:When installing several units, leave space between each block as shown below considering passage for air and people.

(Be opened)

915mm(36 inches) or more (control box is of a open/close type) 250mm(9-13/16 inch) or more

= 1250mm(49-1/4 inch) or more at the coastal area or strong wind area

150mm(5-7/8 inch) or more

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

Front Side

Rear Side

❈

D D D

18 Outdoor Unit

Installation Space

Seasonal wind and cautions in winter

• Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well.

• Get ready for seasonal wind or snow in winter even in other areas.

• Install a suction and discharge duct not to let in snow or rain.

• Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes on the air suction

hole, the system may malfunction. If it is installed at snowy area, attach the hood to the system.

• Install the outdoor unit at the higher installation console by 50cm than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall.

• Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm, always remove snow for operation.

1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the

product. (If width of the frame is wider than that of the product, snow may accumulate)

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

Installation Manual 19

Lifting Method

ENGLISH

• 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.

Lifting method

CAUTION

Be very careful while carrying the product.

• Do not have only one person carry product if it is more than 20 kg(44 lbs).

• 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.

• Be very careful while carrying ARUN076DT2. It will be tilted in right side.

Sub line

40° or less

WARNING

20 Outdoor Unit

Installation

Location of anchor bolt(To be applied to 1, 2 Units installation)

Installation

■ Individual installation

■ Collective installation

■ Installation foot(Location of anchor bolt)

10(3/8)

383

(15-1/16)

700±2(27-9/16±1/16)

900±2

(35-7/16±1/16)

900±2

(35-7/16±1/16)

(UW1)

UW1 UW1

700±2

(27-9/16±1/16)

900±2

(35-7/16±1/16)

900±2

(35-7/16±1/16)

900±2

(35-7/16±1/16)

900±2

(35-7/16±1/16)

UW1 UW1

10(3/8)

383

(15-1/16)

383

(15-1/16)

UW1 UW1

10(3/8)

150

(5-7/8)

533

(20-15/16)

Unit: mm(inch)

900mm

(35-7/16 inch)

Installation Manual 21

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).

Ensure that the corner part can be securely mounted. Otherwise, the support for installation may be bent.

Obtain and use the M10 anchor bolt.

The corner was not properly mounted.

Outdoor unit (Insert the cushion pad between outdoor unit and base support to ensure that anti-vibration may be done in a wide area)

Pipe and wiring space (in case of piping and wiring on the floor surface)

H-Beam support

Concrete base support

WARNING

• Be sure to install unit in a place strong enough to withstand its weight. Any lack of strength may cause unit to fall down, resulting in a personal injury.

• Have installation work in order to protect against a strong wind and earthquake. Any installation deficiency may cause unit to fall down, resulting in a personal injury.

• Especially take care for support strength of the floor surface, water drain processing (processing of water flown out from the outdoor unit during operation) and paths of the pipe and wiring when making a base support.

• Don't use a tube or pipe for water drain in the base pan and perform water drain processing by using the drain path. Water drain may not be done due to freezing of a tube or pipe.

Rear view

Side view

Water

Drain Path

22 Outdoor Unit

Refrigerant piping installation

WARNING

After completing work, securely tighten both service ports and caps so that gas does not leak.

Refrigerant piping installation

WARNING

Always use extreme care to prevent the refrigerant gas (R410A) from leakage while using fire or flame. If the refrigerant gas comes in contact with the flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning. Never perform brazing in an unventilated room. Always conduct an inspection for gas leakage after installation of the refrigerant piping has been completed.

Pipe joint (auxiliary parts): Securely perform brazing with a nitrogen blow into the service valve port.(Releasing pressure : 0.29 psi or less)

Flare nut: Loose or tighten flare nut by using the wrench with both ends. Coat the flare connection part with oil for the compressor.

Cap: Remove caps and operate valve, etc. After operation, always reattach caps (tightening torque of valve cap: 25Nm (250kg-cm) or more). (Don't remove the internal part of the port)

Service port: Make the refrigerant pipe vacuum and charge it using the service port. Always reattach caps after completing work (tightening torque of service cap: 10 lbf

•

ft or more).

Liquid pipe

Gas pipe

Elbow joint (field supply)

Cautions in pipe connection/valve operation

Open status when both the pipe and the valve are in a straight line.

Cut both the pipe and the valve with a cutter to suit the length (Don't cut the length of less than 70mm)

CLOSE OPEN

Elbow

Ball Valve(Gas Pipe)

Ball Valve(Liquid Pipe)

Installation Manual 23

ENGLISH

23 Outdoor Unit

Refrigerant piping installation

Connection of High/Low Pressure Common pipe

1. For the High/Low Pressure Common pipe, connect both Master Outdoor Unit and Slave (1, 2) Outdoor Unit to the pipe (field supply) by using elbows (field supply)

2. For cutting the pipe, connect the High/Low Pressure Common pipe after removing burrs, dusts and foreign materials within the pipe. Otherwise, the product may not operate due to sludge within the pipe.

When connecting the pipes from the front of the outdoor unit, remove part

When connecting the pipes from the side of the outdoor unit, remove part (the whole "Knock out" part).

Slave Outdoor Unit

Master Outdoor Unit

2 outdoor units

WARNING

After installing the pipe, clog the pipe excavation inlet of the front panel and the side panel (Wire may be damaged due to entry of rats, animals, etc).

(Front)

24 Outdoor Unit

Refrigerant piping installation

2 outdoor units

Connection of Outdoor units

Don't cut the pipe less than 70mm(2-3/4inch)

Master outdoor gas pipe

Blow nitrogen while brazing

Ø 31.8(11/4)

Ø 28.58(11/8)

Ø 19.05(3/4)

Ø 22.2(7/8)

Ø 28.58(11/8)

Master outdoor liquid pipe

Main pipe

Ø 12.7(1/2)

Ø 9.52(3/8)

Ø 12.7(1/2)

Ø 19.05(3/4)

Ø 12.7(1/2)

Ø 15.88(5/8)

Ø 34.9(1-3/8)

OD28.58(11/8)

Ø19.05(3/4)

Ø22.2(7/8)

OD34.9(1-3/8)

Ø38.1(11/2)

Ø15.88(5/8)

OD19.05(3/4)

OD12.7(1/2)

Ø9.52(3/8)

Ø22.2(7/8)

OD19.05(3/4)

Connection of gas pipe

Connection of liquid pipe

Model

ARCNN20

Y branch

To outdoor unit

To branch piping or indoor unit

Facing

upwards

Facing

downwards

Within ± 3° Within ± 3°

Viewed from point A in direction of arrow

Within +/- 10°

Unit: mm(inch)

Installation Manual 25

ENGLISH

Refrigerant piping installation

To Outdoor Unit

Sealed Piping

A B

Caution

1. Use the following materials for refrigerant piping.

• Material: Seamless phosphorous deoxidized copper pipe

• Wall thickness : Comply with the relevant local and national regulations for the designed pressure 3.8MPa. We

recommend the following table as the minimum wall thickness.

2. Commercially available piping often contains dust and other materials. Always blow it clean with a dry inert gas.

3. Use care to prevent dust, water or other contaminants from entering the piping during installation.

4. Reduce the number of bending portions as much as possible, and make bending radius as big as possible.

5. Always use the branch piping set shown below, which are sold separately.

6. If the diameters of the branch piping of the designated refrigerant piping differs, use a pipe cutter to cut the connecting section and then use an adapter for connecting different diameters to connect the piping.

7. Always observe the restrictions on the refrigerant piping (such as rated length, difference in height, and piping diameter). Failure to do so can result in equipment failure or a decline in heating/cooling performance.

8. A second branch cannot be made after a header. (These are shown by .)

9. The Multi V will stop due to an abnormality like excessive or insufficient refrigerant. At such a time, always properly charge the unit. When servicing, always check the notes concerning both the piping length and the amount of additional refrigerant.

10. Never use refrigerant to perform an air purge. Always evacuate using a vacuum pump.

11. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling perfor-

mance, drip of condensate and other such problems.

12. When connecting the refrigerant piping, make sure the service valves of the Outdoor Unit is completely

closed (the factory setting) and do not operate it until the refrigerant piping for the Outdoor and Indoor Units has been connected, a refrigerant leakage test has been performed and the evacuation process has been completed.

13. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized film

can cause clogging or damage to the compressor unit and flux can harm the copper piping or refrigerant oil.

ARBLN01620 ARBLN03320 ARBL054 ARBL057 ARBL1010 ARBLN07120 ARBLN14520 ARBL104 ARBL107 ARBL2010

Y branch

Header

4 branch 7 branch 10 branch

Outer diameter

[mm(inch)]

Minimum thickness

[mm(inch)]

6.35 (1/4)

9.52 (3/8)

12.7

(1/2)

15.88 (5/8)

19.05 (3/4)

22.2 (7/8)

25.4 (1)

28.58

(1-1/8)

31.8

(1-1/4)

34.9

(1-3/8)

38.1

(1-1/2)

41.3

(1-15/16)

0.8

(0.03)

0.8

(0.03)

0.8

(0.03)

0.99

(3.25)

0.99

(0.04)

0.99

(0.04)

0.99

(0.04)

0.99

(0.04)

1.1

(0.04)

1.21

(0.05)

1.35

(0.05)

1.43

(0.06)

26 Outdoor Unit

Refrigerant piping installation

WARNING

When installing and moving the air conditioner to another site, be sure to make recharge refrigerant after perfect evacuation.

- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

- After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after branching, use an appropriate branch pipe set according to the pipe diameter of the indoor unit and the installation pipe drawing.

= Product length + ∑  (distance between Outdoor Units)

Pipe length between Outdoor Units

(Gas pipe, Liquid pipe, High/Low Pressure Common pipe)

12. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling performance, drip of condensate and other such problems.

13. When connecting the refrigerant piping, make sure the service valves of the Outdoor Unit is completely closed (the factory setting) and do not operate it until the refrigerant piping for the Outdoor and Indoor Units has been connected, a refrigerant leakage test has been performed and the evacuation process has been completed.

14. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized film can cause clogging or damage to the compressor unit and flux can harm the copper piping or refrigerant oil.

Product length

Distance between Outdoor Units

Installation Manual 27

ENGLISH

Refrigerant piping installation

◆ Y branch method

Refrigerant piping system

1 Outdoor Units

Example : 5 Indoor Units connected

: Outdoor Unit : 1st branch (Y branch) : Indoor Units

l 40m(131ft) (90m(295ft) : Conditional application)

100m(328ft)

L150m(492ft) (200m(656ft) : Conditional application)

15m(49ft)

Master

Slave

10m

(32.8ft)

less

l 40m(131ft) (90m(295ft) : Conditional application)

100m(328ft)

L150m(492ft) (200m(656ft) : Conditional application)

15m(49ft)

Piping length from outdoor branch to outdoor unit ≤10m(32.8ft), equivalent length:max 13m(42.7ft) (for 18HP or more)

Conditional Application

To satisfy below condition to make 40 m ~ 90 m(131 ft ~295 ft) of pipe length after first branch.

1) Diameter of pipes between first branch and the last branch should be increased by one step, except pipe diameter

B,C,D is same as Diameter A

Ø6.35(1/4 inch) → Ø 9.52(3/8 inch) → Ø 12.7(1/2 inch) → Ø 15.88(5/8 inch) → Ø 19.05(3/4 inch) → Ø 22.2(7/8 inch) → Ø 25.4*(1* inch), Ø 28.58(1-1/8 inch) → Ø 31.8*(1-1/4* inch), Ø 34.9(1-3/8 inch) → Ø 38.1*(1-1/2* inch)

* : It is not necessary to size up.

2) While calculating whole refrigerant pipe length, pipe B,C,D length should be calculated twice.

A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1,000 m(3,281 ft)

3) Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40m(131ft)

4) [Length of pipe from outdoor unit to the farthest indoor unit 5 (A+B+C+D+e)]

- [Length of pipe outdoor unit to the closest indoor unit 1 (A+a)] ≤ 40m(131ft)

2 Outdoor Units

Example : 5 Indoor Units connected

: Outdoor Unit

: 1st branch (Y branch)

: Indoor Units

: Downward Indoor Unit

: Connection branch pipe

between Outdoor units: ARCNN20

28 Outdoor Unit

Refrigerant piping installation

Longest pipe length Equivalent pipe length A+B+C+D+e ≤ 150m(492ft)(200m**(656ft)**)

A+B+C+D+e ≤ 175m(574ft) (225m(738ft)**) Longest pipe length after 1st branch B+C+D+e ≤ 40m(131ft) 90m(295ft)**) Difference in height(Outdoor Unit ↔ Indoor Unit) H ≤ 100m(328ft) Difference in height (Indoor Unit ↔ Indoor Unit) h ≤15m(49ft) Difference in height (Outdoor Unit ↔ Outdoor Unit) h1 ≤ 5m(16ft)

➲ Refrigerant pipe diameter from branch to branch (B,C,D)

➲ Total pipe length = A+B+C+D+a+b+c+d+e ≤ 1,000m(3,281 ft)

• * : Assume equivalent piping length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation purpose.

• ** : To apply Conditional Application

Downward Indoor Unit total capacity

[kW(Btu/h)]

<22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)

< 33(112,600) Ø9.52(3/8) Ø22.2(7/8)

< 47(160,400) Ø12.7(1/2) Ø28.58(1-1/8)

< 71(242,300) Ø15.88(5/8) Ø28.58(1-1/8)

< 104(354,900) Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe [mm(inch)]

Gas pipe

[mm(inch)]

Upward Outdoor Unit

total capacity [HP]

8 Ø9.52(3/8) Ø19.05(3/4)

10 Ø9.52(3/8) Ø22.2(7/8)

12~16 Ø12.7(1/2) Ø28.58(1-1/8)

18~22 Ø15.88(5/8) Ø28.58(1-1/8)

24 Ø15.88(5/8) Ø34.9(1-3/8)

26~32 Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Upward Outdoor Unit

total capacity [HP]

20, 22, 24 Ø15.88(5/8) Ø28.58(1-1/8)

26, 28, 30, 32 Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Installation Manual 29

ENGLISH

Refrigerant piping installation

1 Outdoor Unit

Example : 6 Indoor Units connected

: Outdoor Unit

: 1st branch

: Indoor Units

: Sealed piping

L 150m(492ft)

40m(131ft)

H 100m(328ft)

15m(49ft)

2 Outdoor Units

Example : 6 Indoor Units connected

: Outdoor Unit

: Header branch

: Indoor Units

: Sealing

: Connection branch pipe

between Outdoor units: ARCNN20

◆ Header Method

10m (32.8ft) or less

H 100m(328ft)

Slave

Master

L 150m(492ft)

40m(131ft)

15m(49ft)

30 Outdoor Unit

Refrigerant piping installation

Longest pipe length * Equivalent pipe length A+f ≤ 150m(492ft) A+f ≤ 175m(574ft) Longest pipe length after 1st branch f ≤ 40m(131ft) Difference in height(Outdoor Unit ↔ Indoor Unit) H ≤ 100m(328ft) Difference in height (Indoor Unit ↔ Indoor Unit) h ≤15m(49ft) Difference in height

(Outdoor Unit ↔ Outdoor Unit)

h1 ≤ 5m(16ft)

➲ Total pipe length = A+a+b+c+d+e+f ≤ 1,000m(3,281 ft)

WARNING

Pipe length after header branching (a~f) It is recommended that difference in length of the pipes connected to the Indoor Units is minimized. Performance difference between Indoor Units may occur.

• * :

Assume equivalent piping length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation purpose

• Indoor Unit should be installed at lower position than the header.

• Piping length from outdoor branch to outdoor unit ≤ 10m(32.8ft), equivalent length : max 13m(42.6ft)

(for 18HP or more)

Installation Manual 31

ENGLISH

Refrigerant piping installation

Branch pipe can not be used after header

Example : 5 Indoor Units connected

: Outdoor Unit

: 1st branch (Y branch)

: Y branch

: Indoor Unit

: Header

: Sealed piping

Example : 5 Indoor Units connected

: Outdoor Unit : 1st branch : Y branch : Indoor Unit : Connection branch pipe

between Outdoor units:

ARCNN20 : Header : Sealed piping

◆ Combination of Y branch/header method

L 150m(492ft)

H 100m(328ft)

40m(131ft)

h 15m(49ft)

Slave

Master

10m (32.8ft) or less

L 150m(492ft)

H 100m(328ft)

40m(131ft)

h 15m(49ft)

32 Outdoor Unit

Refrigerant piping installation

➲ Refrigerant pipe diameter from branch to branch (B,C)

➲ Total pipe length = A+B+C+a+b+c+d+e ≤ 1,000m(3,281 ft)

Longest pipe length * Equivalent pipe length A+B+b ≤ 150m(492ft) A+B+b ≤ 175m(574ft) Longest pipe length after 1st branch B+b ≤ 40m(131ft) Difference in height(Outdoor Unit ↔ Indoor Unit) H ≤ 100m(328ft) Difference in height (Indoor Unit ↔ Indoor Unit) h ≤ 15m(49ft) Difference in height (Outdoor Unit ↔ Outdoor Unit) h1 ≤ 5m(16ft)

Downward Indoor Unit total capacity

[kW(Btu/h)]

<22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)

< 33(112,600) Ø9.52(3/8) Ø22.2(7/8)

< 47(160,400) Ø12.7(1/2) Ø28.58(1-1/8)

< 71(242,300) Ø15.88(5/8) Ø28.58(1-1/8 )

< 104(354,900) Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe [mm(inch)]

Gas pipe

[mm(inch)]

• * :

Assume equivalent pipe length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation purpose

• Indoor Unit should be installed at lower position than the header.

WARNING

It is recommended that difference of piping length for pipes connected to the Indoor Unit is minimized. Performance difference between Indoor Units may occur.

Upward Outdoor Unit

total capacity [HP]

8 Ø9.52(3/8) Ø19.05(3/4)

10 Ø9.52(3/8) Ø22.2(7/8)

12~16 Ø12.7(1/2) Ø28.58(1-1/8)

18~22 Ø15.88(5/8) Ø28.58(1-1/8)

24 Ø15.88(5/8) Ø34.9(1-3/8)

26~32 Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Upward Outdoor Unit

total capacity [HP]

20, 22, 24 Ø15.88(5/8) Ø28.58)(1-1/8)

26, 28, 30, 32 Ø19.05(3/4) Ø34.9(1-3/8)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Upward Outdoor Unit

total capacity [HP]

8 Ø9.52(3/8) Ø19.05(3/4)

10 Ø9.52(3/8) Ø22.2(7/8)

12, 14, 16 Ø12.7(1/2) Ø28.58(1-1/8)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Installation Manual 33

ENGLISH

Refrigerant piping installation

WARNING

• In case of pipe diameter B connected after first branch is bigger than the main pipe diameter A, B should be of the same size with A. Ex) In case indoor unit combination ratio 120% is connected to 70kW outdoor unit.

1) Outdoor unit main pipe diameter A : Ø34.9(1-3/8 inch)(gas pipe), Ø15.88(5/8 inch)(liquid pipe)

2) Pipe diameter B after first branch according to 120% indoor unit combination(84kW) : Ø34.9(1-3/8 inch)(gas pipe), Ø19.05(3/4 inch)(liquid pipe) Therefore, pipe diameter B connected after first branch would be Ø34.9(1-3/8 inch)(gas pipe)/Ø15.88(5/8 inch)(liquid pipe) which is same with main pipe diameter.

[Example]

Do not choose the main pipe diameter by downward indoor unit total capacity but its outdoor unit model name. Do not let the connection pipe from branch to branch exceed the main pipe diameter chosen by outdoor unit model name. EX) Where connecting the indoor units to the 22 HP (61.5 kW) outdoor unit to 120% of its system

capacity (73.8 kW) and branching 7k (2.2kW) indoor unit at the 1st branch Main pipe diameter(22 HP outdoor unit): Ø28.58(1-1/8 inch)(Gas pipe) Ø15.88(5/8 inch)(Liquid pipe) Pipe diameter between 1st and 2nd branch (71.7kW indoor units): Ø34.9(1-3/8 inch)(Gas pipe) Ø19.05(3/4 inch)(Liquid pipe) in conformity with downward indoor units. Since the main pipe diameter of 22HP outdoor unit is Ø28.58(1-1/8 inch)(Gas pipe) and Ø15.88(5/8 inch)(Liquid pipe), Ø28.58(1-1/8 inch) (Gas pipe) and Ø15.88(5/8 inch) (Liquid pipe) is used as the main pipe and the connection pipe between 1st and 2nd branch.

➲ Refrigerant pipe diameter before 1st branch (A,E,F)

Upward Outdoor Unit total capacity

[HP]

8 Ø9.52(3/8) Ø19.05(3/4)

10 Ø9.52(3/8) Ø22.2(7/8)

12~16 Ø12.7(1/2) Ø28.58(1

-1/8

)

18~22 Ø15.88(5/8) Ø28.58(1

-1/8

)

24 Ø15.88(5/8) Ø34.9(1

-3/8

26~32 Ø19.05(3/4) Ø34.9(1

-3/8

)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

* High/Low Pressure Common Pipe: Ø19.05(3/4 inch)(18HP or more)

◆ Outdoor unit Connection

34 Outdoor Unit

Refrigerant piping installation

WARNING

When the equivalent length between the outdoor unit and a indoor unit is 90 m(295 ft) or more, the size of main pipes (Liquid pipe and Gas pipe) must be increased one grade.

7.1.5 Indoor Unit Connection

➲ Indoor Unit connecting pipe from branch (a,b,c,d,e,f)

Gas pipe

8HP .....................................Ø19.05(3/4 inch) → Ø22.2(7/8 inch)

10HP. ..................................Ø22.2(7/8 inch) → Ø25.4(1 inch)

12, 14HP ..............................Ø28.58(11/8 inch) → Not increased

16, 18, 20, 22HP ................Ø28.58(11/8 inch) → Ø31.8(11/4 inch)

24HP ...................................Ø34.9(1-3/8 inch) → Not increased

26, 28, 30, 32HP .................Ø34.9(1-3/8) → Ø38.1(11/2 inch)

Liquid pipe

8, 10HP ...............................Ø9.52(3/8 inch) → Ø12.7(1/2 inch)

12, 14, 16HP. ......................Ø12.7(1/2 inch) → Ø15.88(5/8 inch)

18, 20, 22, 24HP .................Ø15.88(5/8 inch) → Ø19.05(3/4 inch)

26, 28, 30, 32 ......................Ø19.05(3/4 inch) → Ø22.2(7/8 inch)

Indoor Unit capacity [kW(Btu/h)]

≤ 5.6(19,100)

< 16.0(54,600)

< 22.4(76,400)

Ø6.35(1/4)

Ø9.52(3/8)

Ø12.7(1/2)

Ø15.88(5/8)

Ø19.05(3/4)

Liquid pipe

[mm(inch)]

Gas pipe

[mm(inch)]

Installation Manual 35

ENGLISH

Refrigerant piping installation

Connection between outdoor and outdoor unit

■ Example of Pipe Connection between Outdoor

1. Pipe Connection between Outdoors

Less than 10m(32.8ft)

Less than 2m(6.6ft)

2. In case pipe length between outdoors is less than 2m(6.6ft)

Differnce in height between outdoor units Less than 5m(16ft)( h1 ≤ 5m(16ft)).

Longest Pipe Length between Outdoors Less than 10m(32.8ft), after 1st branch.

CAUTION

Apply oil trap between outdoor unit installed Higher level and outdoor unit installed lower level. Oil may be accumulated in stopped outdoor unit.

36 Outdoor Unit36 Outdoor Unit

Refrigerant piping installation

3. In case pipe length between outdoors is 2m or more.

When the piping length between Branch of Outdoor units or between Branch and outdoor units. Is 2 m(6.6ft) or more, prepare a oil trap 200 mm(0.7ft) or more as shown below) on the gas pipe line location. Less than 2 m(6.6ft) from branch.

4. Example of wrong connection

Less than 2m(6.6ft)

2m(6.6ft) or more

Less than 2m(6.6ft)

2m(6.6ft) or more

Oil Trap

200mm(0.7ft) or more

Oil Trap

Oil is accumulating in outdoor units when system stops

Oil is accumulating in lower level outdoor units when system stops

Installation Manual 37

ENGLISH

Refrigerant piping installation

◆

The amount of Refrigerant

The calculation of the additional charge should take into account the length of pipe.

Product Charge(kg(lb))

Additional charge (kg(lb))

x 0.354(kg/m) → 0.237 lb/ft

x 0.266(kg/m) → 0.178 lb/ft

x 0.173(kg/m) → 0.116 lb/ft

x 0.118(kg/m) → 0.079 lb/ft

x 0.061(kg/m) → 0.041 lb/ft

x 0.022(kg/m) → 0.015 lb/ft

CF(kg(lb))

(Correction Factor)

If a negative result is obtained from the calculation, no refrigerant needs to be added.

A B

CAUTION

Total liquid pipe (m(ft.)): Ø22.2mm(7/8inch)

Total liquid pipe (m(ft.)): Ø19.05mm(3/4inch)

Total liquid pipe (m(ft.)): Ø15.88mm(5/8inch)

Total liquid pipe (m(ft.)): Ø12.7mm(1/2inch)

Total liquid pipe (m(ft.)): Ø9.52mm(3/8inch)

Total liquid pipe (m(ft.)): Ø6.35mm(1/4inch)

Total amount(kg(lb))

B B B

c d

34 5

Outdoor Unit Indoor Unit A: ø9.52(3/8), 40m(131ft) B: ø9.52(3/8), 20m(65.6ft) C: ø9.52(3/8), 20m65.6ft)

10HP

Additional charge = A*0.041 + B*0.041 + C*0.041 +(a+b+c+d+e)*0.015 + CF = 40*0.041+20*0.041+65.6*0.041 + (32.8*5)*0.015 + (0)(CF) = 7.61(lb)

a : ø6.35(1/4), 10m(32.8ft) b : ø6.35(1/4), 10m(32.8ft) c : ø6.35(1/4), 10m(32.8ft) d : ø6.35(1/4), 10m(32.8ft) e : ø6.35(1/4), 10m(32.8ft)

• 460V

HP 8 101214161820222426283032

• 208/230V

HP 8 10 12 16 18 20 22 24

Product Charge kg(lbs)

8(17.6) 8(17.6) 8(17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6)

CF kg(lbs)

-1(-2.2) 0(0) 1(2.2) -2(-4.4) -1(-2.2) 0(0) 1(2.2) 2(4.4)

Product Charge kg(lbs)

CF kg(lbs)

(17.6)8(17.6)8(17.6)8(17.6)8(17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

8+8

(17.6+17.6)

-1

(-2.2)0(0)1(2.2)2(4.4)3(6.6)-1(-2.2)0(0)1(2.2)2(4.4)3(6.6)4(8.8)5(11.0)6(13.2)

WARNING

Regulation for refrigerant leakage : the amount of refrigerant leakage should satisfy the following equation for human safety.

❐ If the above equation can not be satisfied, then follow the following steps.

- Selection of air conditioning system: select one of the next

1. Installation of effective opening part

2. Reconfirmation of Outdoor Unit capacity and piping length

3. Reduction of the amount of refrigerant

4. Installation of 2 or more security device (alarm for gas leakage)

- Change Indoor Unit type : installation position should be over 2m(6.6ft) from the floor (Wall mounted type → Cassette type)

- Adoption of ventilation system : choose ordinary ventilation system or building ventilation system

- Limitation in piping work : Prepare for earthquake and thermal stress

WARNING

Refer to model information since the CF Value of correction factor differs depending on model.

Total amount of refrigerant in the system

0.44 (kg / m3)(0. 028(lb/ft3))

Volume of the room at which Indoor Unit of the least capacity is installed

38 Outdoor Unit38 Outdoor Unit

Refrigerant piping installation

1. Line Distribution

2. Vertical Distribution

Ensure that the branch pipes are attached vertically.

3. The others

Header

Slave

Master

Slave

Master

1st

Main pipe

Distribution

2nd

3rd

Slave

Master

Slave

Master

Slave

Master

Slave

Master

2nd

Main pipe

Distribution

Slave

Master

1st

3rd

3rd main pipe distribution

2nd

Distribution Method

Installation Manual 39

ENGLISH

Refrigerant piping installation

Branch pipe Fitting

Y branch

To Outdoor Unit

To Branch Piping or Indoor Unit

Facing

upwards

Facing

downwards

Within ± 3° Within ± 3°

Viewed from point A in direction of arrow

Horizontal plane

Within +/- 10°

Insulator

(included with kit)

Liquid and gas pipe joints

Insulator for field piping

Tape

(field supply)

Header

To outdoor unit

To indoor unit

• Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.)

• There is no limitation on the joint mounting configuration.

• If the diameter of the refrigerant piping selected by the procedures described is different from the size

of the joint, the connecting section should be cut with a pipe cutter.

• Branch pipe should be insulated with the insulator in each kit.

• When the number of pipes to be connected is

smaller than the number of header branches, install a cap to the unconnected branches.

• The indoor unit having larger capacity must be installed closer to than smaller one.

• If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint,

the connecting section

should be cut with a pipe cutter.

Pipe cutter

40 Outdoor Unit40 Outdoor Unit

Refrigerant piping installation

• When the number of indoor units to be connected to the branch pipes is less than the number of branch pipes available for connection then cap pipes should be fitted to the surplus branches.

• Fit branch pipe lie in a horizontal plane.

• Header should be insulated with the insulator in each kit.

• Joints between branch and pipe should be sealed with the tape included in each kit.

• Any cap pipe should be insulated using the insulator provided with each kit and then taped as described

above.

Pinched pipe

Horizontal plane

View from point B in the direction of the arrow

Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure.

Insulator

Insulator of field pipe

Tape

Cap pipe

Insulator for cap pipe

Installation Manual 41

ENGLISH

Refrigerant piping installation

◆ Y branch pipe

Models Gas pipe Liquid pipe

ARBLN01620

ARBLN03320

ARBLN07120

[Unit:mm(inch)]

ARBLN14520

42 Outdoor Unit42 Outdoor Unit

Refrigerant piping installation

◆ Header

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø19.05(3/4)

O.D Ø19.05(3/4)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø9.52(3/8)

I.D Ø6.35(1/4)

I.D Ø12.7(1/2)

O.D Ø12.7(1/2) I.D Ø9.52(3/8)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø19.05(3/4)

O.D Ø19.05(3/4)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø9.52(3/8)

I.D Ø6.35(1/4)

I.D Ø9.52(3/8)

I.D Ø6.35(1/4)

I.D Ø12.7(1/2)

O.D Ø12.7(1/2)

I.D Ø9.52(3/8)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø28.58(1-1/8)

I.D Ø19.05(3/4)

I.D Ø15.88(5/8)

O.D Ø28.58(1-1/8)

I.D Ø22.2(7/8)

I.D Ø25.4(1)

I.D Ø9.52(3/8)

I.D Ø6.35(1/4)

I.D Ø9.52(3/8)

I.D Ø12.7(1/2)

I.D Ø6.35(1/4)

O.D Ø12.7(1/2)

I.D Ø9.52(3/8)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø28.58(1-1/8)

I.D Ø19.05(3/4)

I.D Ø15.88(5/8)

O.D Ø28.58(1-1/8)

I.D Ø22.2(7/8)

I.D Ø25.4(1)

I.D Ø9.52(3/8)

I.D Ø6.35(1/4)

I.D Ø9.52(3/8)

I.D Ø12.7(1/2)

I.D Ø6.35(1/4)

O.D Ø12.7(1/2)

I.D Ø9.52(3/8)

I.D Ø15.88(5/8)

I.D Ø12.7(1/2)

I.D Ø28.58(1-1/8)

I.D Ø19.05(3/4)

I.D Ø15.88(5/8)

O.D Ø28.58(1-1/8)

I.D Ø22.2(7/8)

I.D Ø25.4(1)

I.D Ø9.52(3/8)I.D Ø6.35(1/4)

I.D Ø9.52(3/8)

I.D Ø12.7(1/2)

I.D Ø6.35(1/4)

O.D Ø12.7(1/2) I.D Ø9.52(3/8)

I.D Ø15.88(5/8)

I.D Ø19.05(3/4)

I.D Ø31.8(1-1/4)

I.D Ø38.1(1-1/2)

I.D Ø12.7(1/2)

O.D Ø38.1(1-1/2)

I.D Ø34.9(1-3/8)

I.D Ø28.58(1-1/8)

I.D Ø6.35(1/4)

I.D Ø9.52(3/8)

I.D Ø9.52(3/8) I.D Ø6.35(1/4)

I.D Ø15.88(5/8)

I.D Ø19.05(3/4)

O.D Ø19.05(3/4) I.D Ø15.88(5/8)

[Unit:mm(inch)]

4 branch

ARBL054

7 branch

ARBL057

4 branch

ARBL104

7 branch

ARBL107

10 branch

ARBL1010

10 branch

ARBL2010

Models Gas pipe Liquid pipe

Installation Manual 43

ENGLISH

Refrigerant piping installation

Leak Test and Vacuum drying

(1) Leak test

Leak test should be m

ade by pressurizing nitrogen gas to 551.1 psi. If the pressure does not drop for 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks. For the test method, refer to the following figure. (Make a test with the service valves closed. Be also sure to pressurize liquid pipe, gas pipe and high/low pressure common pipe) The test result can be judged good if the pressure has not be reduced after leaving for about one day after completion of nitrogen gas pressurization.

Note:

If the ambient temperature differs between the time when pressure is applied and when the pressure drop is checked, apply the following correction factor

There is a pressure change of approximately 0.1MPa (14.5 psi) for each 1°C(33.8˚F) of temperature difference.

Correction= (Temp. at the time of pressurization – Temp. at the time of check) X 0.1

For example: Temperature at the time of pressurization (3.8 MPa (551.1 psi) is 27 °C(80.6˚F)

24 hour later: 3.73 MPa (541 psi), 20°C(68˚F)

In this case the pressure drop of 0.07 is because of temperature drop

And hence there is no leakage in pipe occurred.

Caution:

To prevent the nitrogen from entering the refrigeration system in the liquid state, the top of the cylinder must be at higher position than the bottom when you pressurize the system.

Usually the cylinder is used in a vertical standing position.

Slave 1 outdoor unit Master outdoor unit

Nitrogen gas cylinder

common pipe

High/low pressure

Liquide pipe

Gas pipe

CloseClose

common pipe

High/low pressure

Liquide pipe

Gas pipe

Liquid side

Indoor unit

Gas side

44 Outdoor Unit44 Outdoor Unit

Refrigerant piping installation

(2) Vacuum

Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the vacuum pump commonly used for liquid pipe, gas pipe and high/low pressure common pipe. (Make Vacuum from liquid pipe, gas pipe and high/low pressure common pipe with the service valve closed.) * Never perform air purging using refrigerant.

• Vacuum drying: Use a vacuum pump that can evacuate to -14.6 psi.

1. Evacuate the system from the liquid and gas pipes with a vacuum pump for over 2 hrs and bring the system to -14.6 psi. After maintaining system under that condition for over 1 hr, confirm the vacuum gauge rises. The system may contain moisture or leak.

2. Following should be executed if there is a possibility of moisture remaining inside the pipe. (Rainwater may enter the pipe during work in the rainy season or over a long period of time) After evacuating the system for 2 hrs, give pressure to the system to 7.3 psi(vacuum break) with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to -100.7kPa(vacuum drying). If the system cannot be evacuated to -14.6 psi within 2 hrs, repeat the steps of vacuum break and its drying. Finally, check if the vacuum gauge does not rise or not, after maintaining the system in vacuum for 1 hr.

WARNING

When installing and moving the air conditioner to another site, recharge after perfect evacuation.

- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

Note : Always add an appropriate amount of refrigerant. (For the refrigerant additional charge)

Too much or too little refrigerant will cause trouble. To use the Vacuum Mode (If the Vacuum mode is set, all valves of Indoor units and Outdoor units will be opened.)

Slave 1 outdoor unit Master outdoor unit

Vacuum pump

common pipe

High/low pressure

Liquide pipe

Gas pipe

CloseClose

common pipe

High/low pressure

Liquide pipe

Gas pipe

Liquid side

Indoor unit

Scale Use a graviometer. (One that can measure down to 0.22 lb). If you are unable to prepare such a high-precision gravimeter you may use a charge cylinder.

Gas side

Installation Manual 45

ENGLISH

Refrigerant piping installation

Vacuum Mode

This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition/replacement.

Master main PCB DIP switch ON ( No.11,14)

Vacuum mode setting

ODU V/V OPEN

Main EEV, SC EEV OPEN

IDU EEV OPEN

ODU power reset

Press the black button Main PCB (5 sec.)

Main PCB SW01S

Main PCB SW02B

Main PCB SW01V

ODU operation stops during vacuum mode. Compressor can't operate.

Vacuum mode setting method Vacuum mode cancellation method

Master main PCB DIP switch OFF( No.11,14)

Power reset

Vacuum mode cancellation

Caution

46 Outdoor Unit46 Outdoor Unit

Refrigerant piping installation

Thermal insulation of refrigerant piping

Heat

insulation

material

Outer

covering

Adhesive + Heat - resistant polyethylene foam + Adhesive tape

Indoor Vinyl tape Floor exposed

Water-proof hemp cloth + Bronze asphalt

Outdoor

Water-proof hemp cloth + Zinc plate + Oily paint

Note: When using polyethylene cover as covering material, asphalt roofing will not be required.

• Do not insulate gas or low pressure pipe and liquid or high pressure pipe together.

• Be sure to fully insulate connecting portion.

Liquid pipe Gas pipe Power lines Finishing tape Insulating material

Wrong method

Correct method

These parts are not insulated.

B A C

Transmission lines

Liquid pipe

Transmission lines

Separation

Gas pipe Power lines Insulating material

Heat insulation material

Pipe

Outer covering (Wind the connection part and cutting part of heat insulation material with a finishing tape.)

Power lines

Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint between indoor unit and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to insulation work to ceiling plenum.

Penetrations

Inner wall (concealed)

Floor (fireproofing)

Outer wall Outer wall (exposed)

Penetrating portion on fire

Roof pipe shaft

limit and boundary wall

Sleeve

(3.3ft)

Heat insulating material Lagging

Caulking material Band Waterproofing layer Sleeve with edge Lagging material Mortar or other incombustible caulking Incombustible heat insulation material

When filling a gap with mortar, cover the penetration part with steel plate so that the insulation material will not be caved in. For this part, use incombustible materials for both insulation and covering.(Vinyl covering should not be used.)

Installation Manual 47

ENGLISH

Electrical Wiring

Caution

CAUTION

Be sure to correct the outdoor unit to earth. Do not connect earth line to any gas pipe, water pipe, lightening rod or telephone earth line. If earth is incomplete, it may cause an electric shock.

WARNING

Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual. If power supply circuit has a lack of capacity or electric work deficiency, it may cause an electric shock or fire.

1. Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.

2. Install the Outdoor Unit transmission line away from the power source wiring so that it is not affected by electric noise from the power source. (Do not run it through the same conduit.)

3. Be sure to provide designated grounding work to Outdoor Unit.

4. Give some allowance to wiring for electrical part box of Indoor and Outdoor Units, because the box is sometimes removed at the time of service work.

5. Never connect the main power source to terminal block of transmission line. If connected, electrical parts will be burnt out.

6. Use 2-core shield cable for transmission line.(O mark in the figure below) If transmission lines of different systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations. ( mark in the figure below)

7. Only the transmission line specified should be connected to the terminal block for Outdoor Unit transmission.

48 Outdoor Unit48 Outdoor Unit

Electrical Wiring

Remote controller

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Outdoor Unit

Remote controller

Indoor

Unit

Outdoor Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

2-Core Shield Cable Multi-Core Cable

CAUTION

• Use the 2-core shield cables for communication lines. Never use them together with power cables.

• The conductive shielding layer of cable should be grounded to the metal part of both units.

• Never use multi-core cable

• As this unit is equipped with an inverter, to install a phase leading capacitor not only will deteriorate

power factor improvement effect, but also may cause capacitor abnormal heating. Therefore, never install a phase leading capacitor.

• Keep power imbalance within 2% of the supply rating. Large imbalance will shorten the life of the smoothing capacitor.

Installation Manual 49

ENGLISH

Electrical Wiring

Control box and connecting position of wiring

- Remove all of the screws at front panel and remove the panel by pulling it forward.

- Connect communication line between master and slave outdoor unit through the terminal block.

- Connect communication lines between outdoor unit and indoor units through the terminal block.

- When the central control system is connected to the outdoor unit, a dedicated PCB must be connected between them.

- When connecting communication line between outdoor unit and indoor units with shielded wire, connect the shield ground to the earth screw.

WARNING

The temperature sensor for outdoor air should not be exposed to direct sunlight.

- Provide an appropriate cover to intercept direct sunlight.

Front Panel

Reactor

Bridge diode

Inverter PCB

Inverter FAN PCB

UW1 Chassis(460V)

Noise Filter

Transformer

Take care of the phase sequence of 3-phase 3-wire power system

Main PCB

Magnet switch Only below models : ARUN115DT2 ARUN134DT2 ARUN154DT2

Inverter PCB

Inverter FAN PCB

UW1 Chassis(208/230V)

Take care of the phase sequence of 3-phase 3-wire power system

Noise Filter

Main PCB

Magnet switch

50 Outdoor Unit50 Outdoor Unit

Electrical Wiring

Transmission and Power Lines

1) Communication cable

• Types : shielding wire

•Use wires of size : over 1.25mm

• Maximum allowable temperature: 60°C

• Maximum allowable line length: under 1,000m(3,281ft)

2) Remote control cable

• Types : 3-core cable

3) Simple central control cable

• Types : 4-core cable (Shielding wire)

• Use wires of size : over 0.75mm

4) Separation of communication and power lines

• If communication and power lines are run alongside each other then there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling. The tables below indicates our recommendation as to appropriate spacing of communication and power lines where these are to be run side by side

Note:

1. The figures are based on assumed length of parallel cabling up to 100m(328ft). For length in excess of

100m(328ft) the figures will have to be recalculated in direct proportion to the additional length of line involved.

2. If the power supply waveform continues to exhibit some distortion the recommended spacing in the

table should be increased.

• If the lines are laid inside conduits then the following point must also be taken into account when grouping various lines together for introduction into the conduits

• Power lines(including power supply to air conditioner) and signal lines must not be laid inside the same

• In the same way, when grouping the lines power and signal lines should not be bunched together.

Current capacity of power line Spacing

10A 300mm(11-13/16 inch)

50A 500mm(19-11/16 inch)

100A 1,000mm(39-3/8 inch)

Exceed 100A 1,500mm(59-1/16 inch)

100V or more

CAUTION

■ If apparatus is not properly earthed then there is always a risk of electric shocks, the earthing of the apparatus must be carried out by a qualified person.

Installation Manual 51

ENGLISH

Electrical Wiring

1. Use a separate power supply for the Outdoor Unit and Indoor Unit.

2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.

3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker taking into account the line voltage drops. Make sure the power-supply voltage does not drop more than 10%.

4. Specific wiring requirements should adhere to the wiring regulations of the region.

5. Power supply cords of parts of appliances for outdoor use should not be lighter than polychloroprene sheathed flexible cord.

6. Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from

the power supply.

WARNING

• Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.

• Make sure to use specified wires for connections so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause heating or fire.

• Make sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.

CAUTION

•

Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric shock.

• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large

capacity may cause a malfunction of unit or fire.

◆ Wiring of Main Power Supply and Equipment Capacity

52 Outdoor Unit52 Outdoor Unit

Electrical Wiring

5.1 60Hz

◆ Example Connection of Transmission Cable

■ 1 Outdoor Unit - 3Ø, 460V

WARNING

• Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).

• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.

• Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the

equipment utilizing the multiple power sources.

• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase may break the compressor and other parts.

3 Phase 3 Wires Power line(R, S, T)

Communication line (3 line): Wired remote control

Power supply switch

3 Phase 3 Wires

Power supply

60Hz 460V

(Main Switch)

Power supply

1 Phase 60Hz

208/230V

Power supply switch (Switch fuse)

(Switch fuse : ELCB)

Single Phase of power supply line(L, N)

Communication line (2 shield line): Between Indoor Unit and Outdoor Unit

Between Indoor and

Master

Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

The GND terminal is a '–' terminal for the central controller, not Ground Line

Master Outdoor unit

3(A) 4(B)

3(A) 4(B) 3(A) 4(B)

Installation Manual 53

ENGLISH

Electrical Wiring

Power supply switch (Switch fuse)

3 Phase 3 Wires Power line(R, S, T)

Communication line (3 line): Wired remote control

Single Phase of power supply line(L, N)

Communication line (2 shield line): Between Outdoor Unit and Outdoor Unit Communication line (2 shield line): Between Indoor Unit and Outdoor Unit

The GND terminal is a '–' terminal for the central controller, not Ground Line

Slave

Master

Slave Outdoor unit

Power supply switch (Switch fuse : ELCB)

3 Phase 3 Wires

Power supply

60Hz 460V

Power supply

1 Phase 60Hz

208/230V

■ When the power source is connected In series between the units.

(Main Switch)

Between Indoor and

Master

Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

Master Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

Master Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

3(A) 4(B) 3(A) 4(B) 3(A) 4(B)

■ 2 Outdoor Units - 3Ø, 460V

WARNING

• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.

• Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of

the equipment utilizing the multiple power sources.

54 Outdoor Unit54 Outdoor Unit

Electrical Wiring

3 Phase 3 Wires

Power supply

60Hz 208/230V

Power supply

1 Phase 60Hz

208/230V

Power supply switch (Switch fuse : ELCB)

Power supply switch (Switch fuse)

3 Phase 3 Wires Power line(R, S, T)

Communication line (3 line): Wired remote control

Single Phase of power supply line(L, N)

Communication line (2 shield line): Between Indoor Unit and Outdoor Unit

The GND terminal is a '–' terminal for the central controller, not Ground Line

(Main Switch)

Between Indoor and

Master

Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

Master Outdoor unit

3(A) 4(B) 3(A) 4(B) 3(A) 4(B)

■ 1 Outdoor Unit - 3Ø, 208/230V

WARNING

• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.

• Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the

equipment utilizing the multiple power sources.

Installation Manual 55

ENGLISH

Electrical Wiring

Power supply switch (Switch fuse)

3 Phase 3 Wires Power line(R, S, T)

Communication line (3 line): Wired remote control

Single Phase of power supply line(L, N)

Communication line (2 shield line): Between Outdoor Unit and Outdoor Unit Communication line (2 shield line): Between Indoor Unit and Outdoor Unit

The GND terminal is a '–' terminal for the central controller, not Ground Line

Slave

Master

Slave Outdoor unit

Power supply switch (Switch fuse : ELCB)

3 Phase 3 Wires

Power supply

60Hz 208/230V

Power supply 1 Phase 60Hz

208/230V

■ When the power source is connected In series between the units.

(Main Switch)

Between Indoor and

Master

Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

Master Outdoor unit

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

IDUSODU DRY1 DRY2 GND 12V

INTERNET

BABA

Master Outdoor unit

3(A) 4(B) 3(A) 4(B) 3(A) 4(B)

■ 2 Outdoor Units - 3Ø, 208/230V

WARNING

• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.

• Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of

the equipment utilizing the multiple power sources.

56 Outdoor Unit56 Outdoor Unit

Electrical Wiring

Connect the cable to the outdoor unit

1. Remove the control box cover from the unit. Connect the wires to the terminals on the control box as following.

2. Secure the cable onto the control box with the holder

3. Refix the cover to the original position with the screw.

WARNING

• Be sure to comply with local codes while running the wire from indoor unit to outdoor unit ( size of wire and wiring method,etc)

• Every wire must be connected firmly

• No wires should be allowed to touch refrigerant tubing, the compressor or any moving parts.

Master unit

SODU

IDU DRY1 DRY2 GND 12V

TSRTSR

AC Power input AC Power input

INTERNET

BA B A

To indoor unit

Slave unit

SODU

IDU DRY1 DRY2 GND 12V

INTERNET

BA B A

Outdoor unit connection

Installation Manual 57

ENGLISH

Electrical Wiring

Connection method of the connecting cable (Example)

1. Make a hole appropriate for the passage of connection cable through on cap by tool.

2. After knocking out the holes, we recommend you paint the edges and areas around the edges using the repair paint to prevent rusting

3. Pass the connecting cable through the hole.

4. Properly connect the cable on the terminal block.

5. Fix the connection cable with the cord clamp providing on the unit not to have strain at the terminal.

6. Finally, Fix the cap to the conduit panel.

WARNING

• Loose wiring may cause the terminal to overheat or result in unit malfunction.

• A fire hazard may also exist.

• Therefore, be sure all wiring is tightly connected.

Model name ARUN076DT2 ARUN096DT2 ARUN115DT2 ARUN134DT2 ARUN154DT2

AWG 14 14 14 12 12

Conduit (inch) 1/2 1/2 1/2 1/2 1/2

Knockout Diameter (inch) 7/8 7/8 7/8 7/8 7/8

Model name ARUN173DT2 ARUN192DT2 ARUN211DT2 ARUN230DT2 ARUN250DT2 ARUN270DT2 ARUN290DT2 ARUN310DT2

AWG 12 12 12 10 8 8 6 6

Conduit (inch) 1/2 1/2 1/2 1/2 1 1 1 1

Knockout Diameter (inch) 7/8 7/8 7/8 7/8 1-23/64 1-23/64 1-23/64 1-23/64

Model name ARUN076BT2 ARUN096BT2 ARUN115BT2 ARUN154BT2 ARUN173BT2 ARUN192BT2 ARUN211BT2 ARUN230BT2

AWG 10 10 8 6 6 4 4 4

Conduit (inch) 1/2 1/2 1 1 1 1-1/4 1-1/4 1-1/4

Knockout Diameter (inch) 7/8 7/8 1-23/64 1-23/64 1-23/64 1-23/32 1-23/32 1-23/32

58 Outdoor Unit58 Outdoor Unit

Electrical Wiring

Location of setting Switch

Main PCB

SW01B

(DIP S/W)

SW02B

(DIP S/W)

7 - Segment

SW02V Auto addressing

Installation Manual 59

ENGLISH

Electrical Wiring

DIP switch setting

■ Checking according to dip switch setting

1. You can check the setting values of the main outdoor unit from the 7 segment LED. The dip switch setting should be changed when the power is OFF.

2. It checks whether the input is properly performed without the bad contact of the dip switch or not

■ Checking the setting of the Master unit

The number is sequentially appeared at the 7 segment in 5 seconds after applying the power. This Number represents the setting condition.(For example, represents 3Ø 208/230V 20HP heat pump)

Master model code → Slave1 model code → total capacity → 2 → 25 → 140

1~255 : Master model code 1~255 : Master model code 1~255 : Master model code 5~48 HP : HP number (Sum of Master capacity and Slave capacity) No display : cooling only 2 : Heat pump 3: Sync 25 : Normal 140 : 3Ø 208/230V 160 : 3Ø 460V

Example) 3Ø 208/230V 20HP heat pump

151 → 151 → 20 → 2 → 25 → 140

CAUTION

Product may not properly operate if the relevant DIP switch is not properly setup.

Model Code

3Ø 208/230V

Model Code Unit (HP)

150 8 151 10 152 12

3Ø 460V

Model Code Unit (HP)

171 8 172 10 173 12 174 14 175 16

60 Outdoor Unit60 Outdoor Unit

Electrical Wiring

■ Setting the DIP switch (SW03M)

• Set the dip switch with the power turned off. If you change the setting when the power is on, the changed setting is not applied immediately. The changed setting is applied at the moment that the power is on.

• Instant indoor unit checking, data display mode, and forced oil collecting operation are used when theunits are running. If you don't have to use those functions after using them, restore the dip switch setting.

1. Settings of Master outdoor unit

Standard

Short Pipe

Length

Long Pipe Length

Longest Pipe

Length

Leng

SW01B Setting

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

RemarksSW02B SettingFunction SW01B Setting

RemarksSW02B SettingFunction

Indoor Unit

Forced Operation

( Cooling )

Indoor Unit

Forced Operation

( Heating )

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

Installation Manual 61

ENGLISH

Electrical Wiring

Dry Contact

Snow

Forced

Defrosting

Snow + Forced

Defrosting

Outdoor Unit Fan

Low Static

Pressure

Compensation

Outdoor Unit Fan

High Static

Pressure

Compensation

Night Low NoiseNight Low Noise

SW01B Setting

1234567ON1234567

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1234567ON1234567

1234567 891011121314

1234567ON1234567

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1234567ON1234567

1234567 891011121314

1234567ON1234567

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1234567ON1234567

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1234567ON1234567

1234567 891011121314

RemarksSW02B SettingFunction

Pump Down

Forced Oil Return

Vacuum Mode

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

1234567ON1234567

1 2 3 4 5 6 7 8 9 10 11 12 13 14

62 Outdoor Unit62 Outdoor Unit

Electrical Wiring

2. Settings of slave outdoor unit

3. Settings of corresponding outdoor unit

SW01B Setting

Slave 1

1234567ON1234567

1234567 891011121314

Slave 2

1234567ON1234567

1234567 891011121314

Slave 3

1234567ON1234567

1234567 891011121314

SW01B Setting

Inv Back Up

1234567ON1234567

1234567 891011121314

RemarksSW02B SettingFunction SW01B Setting

RemarksSW02B SettingFunction

Unit Back Up

Pump Out

1234567ON1234567

1234567 891011121314

1234567ON1234567

1234567 891011121314

Installation Manual 63

ENGLISH

Electrical Wiring

Automatic Addressing

• The address of indoor units would be set by auto addressing

1) Wait for 3 minutes after applying power supply (main and sub outdoor unit, indoor unit).

2) Press the switch of the outdoor unit (SW02V) for 5 seconds.

3) A "88" is indicated on 7-segment LED of the outdoor unit PCB.

4) For completing addressing, 2~7 minutes are required depending on numbers of indoor unit connection set.

5) Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds on 7-segment LED of the outdoor unit PCB.

6) After completing addressing, address of each indoor unit is indicated on the wired remote control

display window. (CH01, CH02, CH03, .............

CH06: Indicated as numbers of indoor unit connection set.)

SW01B

(DIP S/W)

SW02B

(DIP S/W)

7 - Segment

SW02V Auto addressing

CAUTION

- In replacement of the indoor unit PCB, always perform auto address setting again. If power supply is not applied to the indoor unit, operation error occurs. Auto addressing is only possible on the main PCB Auto addressing has to be performed after 3 minutes to improve communication.

◆ The Procedure of Automatic Addressing

• Auto addressing setting end Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds on 7-segment LED after completing setting

Indoor address number is displayed on wired remote control or indoor unit display window. It is not an error message, will disappeared when on/off button is pressed on remote control ex) Display of 01, 02, ..., 15 means connection of 15 indoor units and auto addressing is completed normally.

Auto addressing start

Waiting 3 minutes

Power On

Press SW02V for 5 sec.

7-segment LED = 88

Don't Press SW02V

Waiting about 2~7 minutes

7-segment LED

YES

NO Check the connections

of transmission line

= 88

64 Outdoor Unit64 Outdoor Unit

Electrical Wiring

Group Number setting

Group Number setting for Indoor Units

Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off.

The communication lines connected to INTERNET terminal should be connected to central control of Outdoor unti with care for their polarity( A → A, B → B )

Turn the whole system on.

Set the group and Indoor Unit number with a wired remote control.

To control several sets of Indoor Units into a group, set the group ID from 0 to F for this purpose.

Terminal block on the main PCB

SODU IDU INTERNET DRY1 DRY2

B(D) A(C)

GND 12V

Group recognizing the simple central controller

No.0 group (00~0F) No.1 group (10~1F) No.2 group (20~2F) No.3 group (30~3F) No.4 group (40~4F) No.5 group (50~5F) No.6 group (60~6F) No.7 group (70~7F) No.8 group (80~8F) No.9 group (90~9F) No. A group (A0~AF) No. B group (B0~BF) No. C group (C0~CF) No. D group (D0~DF) No. E group (E0~EF) No. F group (F0~FF)

Outdoor Units

Installation Manual 65

ENGLISH

Electrical Wiring

Outdoor unit Dry Contact installation and connection

• Connect wires as below figure at the hole of backside of Outdoor Unit Dry Contact.

• Insert the wire in the connection hole pushing the "Push" button.

Mode Change

Outdoor Unit

Heating

Back

Air circulation

Cooling

66 Outdoor Unit66 Outdoor Unit

Test Run

Check to see whether there is any refrigerant leakage, and slack of power or transmission cable.

Confirm that 500 V megger shows 2.0 MΩ or more between power supply terminal block and ground. Do not operate in the case of 2.0 MΩ or less.

NOTE: Never carry out megaohm check over terminal control board. Otherwise the control board

would be broken. Immediately after mounting the unit or after leaving it turned off for an extended length of time, the resistance of the insulation between the power supply terminal board and the ground may decrease to approx. 2 MΩ as a result of refrigerant accumulating in the internal compressor. If the insulation resistance is less than 2 MΩ, turning on the main power supply and energizing the crankcase heater for more than 6 hours will cause the refrigerant to evaporate, increasing the insulation resistance.

Check if high/low pressure common pipe, liquid pipe and gas pipe valves are fully opened.

NOTE: Be sure to tighten caps.

Check if there are any problems in automatic addressing or not: Check and confirm that there are no error messages in the display of indoor units or remote controls and LED in outdoor units.

Checks Before Test Run

CAUTION

when cutting main power of the Multi V

• Always apply main power of the outdoor unit during use of product (cooling season/heating season).

• Always apply power 6 hours in advance to heat the crank case heater where performing test run after installation of product. It may result in burning out of the compressor if not preheating the crank case with the electrical heater for more than 6 hours.(In case of the outdoor temperatue below 10°C)

CAUTION

Preheat of compressor

• Start preheat operation for 3 hours after supplying main power.

• In case that the outdoor temperature is low, be sure to supply power 6 hours before operation so

that the heater is heated(insufficient heating may cause damage of the compressor.)

Installation Manual 67

ENGLISH

Test Run

How to Cope with Test Run Abnormality

The phenomena from main component failure

When system fault occurs, the error code is displayed at indoor unit display or remote control display, the trouble shooting guide is in the service manual

Compressor

Outdoor

fan

Outdoor

EEV

Not operating

Stop during running

Abnormal noise during running

High pressure error at cooling

Heating failure, frequent defrosting

No operating sound at applying power

Heating failure, frozen outdoor heat exchanger part

Low pressure error or discharge temperature error

Motor insulation broken

Strainer clogged

Oil leakage

Motor insulation failure

R-S-T misconnection

Motor failure, bad ventilation around outdoor heat exchanger

Bad connector contact

Coil failure

EEV clogged

Check resistance between terminals and chassis

Change strainer

Check oil amount after opening oil port

Check resistance between terminals and chassis

Check compressor R-S-T connection

Check the outdoor fan operation after being turned the outdoor units off for some time. Remove obstacles around the outdoor units

Check connector

Check resistance between terminals

Service necessary

Component Phenomenon Cause Check method and Trouble shooting

68 Outdoor Unit68 Outdoor Unit

Test Run

Sensor Checking Function

Sensor checking function judges whether the current temperature of indoor and outdoor unit sensors is right or not. -3 indoor temperature sensors, 9 outdoor temperature sensors, 2 outdoor pressure sensors.

It is used for judging sensor abnormality.

Note 2)

Note 1)

Start

Main PCB SW01S

Main PCB SW01B SW02B

Wait for 3 min. after power

reset

Set the dip S/W according to the function Sensor Checking ➠ Refrigerant Auto Charging : 1,2,7 ON Sensor Checking ➠ Refrigerant Checking : 1,2,7,14 ON

Would you perform

the Sensor

checking?

Note

1. Sensor checking function is used with Refrigerant Checking and Refrigerant Auto Charging.

2. Check abnormal sensor

It is displayed at the LED on the main PCB at each step.

4. Refer to the next page for sensor error code part

Caution

1. Confirm auto addressing has been performed (Check installed number of IDU).

2. The error can be displayed even if the sensor is normal according to installation and temperature condition. If error occurs, check the sensor and judge abnormality.

Don’t Perform Sensor Checking

Main PCB SW01V

Main pcb LED

Main PCB SW01V

Yes

Press the black button for 2 sec. on main PCB.

Indoor/Outdoor units operate with air circulation mode

Judging sensor

normality

Error Display

Press the black button on the main PCB for 2 sec.

Press the black button for 2 sec. after turning off all of dip S/W.

Completed.

Note 3)

Yes

Note 4)

Refrigerant Auto Charging

Press the black button until '508' is displayed

Refrigerant

Auto Charging

Refrigerant Checking

Press the black button until '608' is displayed.

Refrigerant

Checking

Installation Manual 69

ENGLISH

Test Run

Sensor Check Error Code Display

In case error occurs during sensor checking process, error display is as shown below.

Following contents are displayed one after the other on the main PCB of master outdoor unit.

Indoor sensor error :

319

Outdoor sensor error :

309

Displaying error content

* 5 number of errors is displayed continuously and repeatedly.

Displaying error content

■ Indoor unit error display

1.1st and 2nd number represents indoor unit number.

2. Last number represents sensor.

1: Pipe inlet temperature sensor 2: Pipe outlet temperature sensor 3: Air temperature sensor

■ Displaying outdoor unit error

1.1st and 2nd number represents error content(code).

2.Last number represents outdoor unit number.

1 : Master 2 : Slave 1 3 : Slave 2 4 : Slave 3 * Indoor unit number follows auto addressing number. (To check the LGMV Data)

ex) Indoor unit No. 2 Pipe inlet temperature sensor

error

ex) Outdoor Master Unit Liquid pipe temperature

sensor error

1 Outdoor Air Temperature 2 Heat Exchanger 1 3 Heat Exchanger 2 4 Inverter Comp. Discharge Temperature 5 Const. Speed. Comp. Discharge Temperature 6 Suction Temperature 7 Liquid Pipe Temperature 8 SC pipe in 9 SC pipe out 10 High Pressure Sensor 11 Low Pressure Sensor

ex) IDU No.2 Pipe inlet temperature sensor error and Master

ODU suction temperature sensor, Slave 3 high pressure sensor error

Caution

1. Up to 5 number of errors is displayed continuously and repeatedly. In case 5 error occurs, again perform sensor checking after solving errors.

2. IDU in which error occurred operates air circulation mode.

.......

70 Outdoor Unit70 Outdoor Unit

Test Run

1. This function charges appropriate amount of refrigerant automatically through cycle operation.

2. This function judges refrigerant leakage and overcharging.

3. It can be used with refrigerant auto charging function.

Refrigerant Checking Function

Main PCB SW01S

Main PCB SW01B SW02B

Main PCB SW01V

Start

Wait for 3 min. after power reset

Set the Dip S/W. Refrigerant Checking : 1,2,7,14 ON

Press the black button on main PCB. ( Press until ‘608’ is displayed )

Press the black button on main PCB

IDU runs with cooling mode in order.

Judging

Refrigerant

Amount

Excess of

Refrigerant

Scarcity of

Refrigerant

Note

1. In case air temperature is out of guaranteed temperature, refrigerant checking function may end without performing refrigerant checking. Use guaranteed temperature range only.

2. During the process of judging refrigerant amount, if the cycle isn't stable, refrigerant checking function may end without performing refrigerant checking.

Impossible

To Judge

IDU, ODU are turned off

Main PCB SW01V

Press the black button on main PCB

Press the black button for 2 sec. after turning off all of dip S/W.

Completed

Note

Note 1)

Installation Manual 71

ENGLISH

Test Run

[ Error contents about auto refrigerant charging function ]

1. : Temperature Range Error (In case that IDU or ODU is out of range)

2. : System Unstable Error (In case, After 45 min operating the system, it does not be stable)

How to Cope with Result of Refrigerant checking

1. If the temperature is not in guaranteed Temperature range, the system will not execute Refrigerant checking and the system will be OFF.

2. Excess of Refrigerant(619)

After remove the 20% of calculated total refrigerant, recharge the refrigerant by using Refrigerant Auto Charging Function.

3. Scarcity of Refrigerant(629)

Charge the refrigerant by using Refrigerant Auto Charging Function.

4. Impossible to Judge(639)

IF the system is not in order, check the other problem except refrigerant.

CAUTION

1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20(68˚F)~32°C(90˚F) (buffer

2°F)

ODU : 10(50˚F)~38°C(100˚F) (buffer 2°F)

2. Set IDU wired remote controller temperature sensor setting as 'IDU'.

3. Make certain that IDU doesn't run with thermo off mode during operation.

72 Outdoor Unit72 Outdoor Unit

Test Run

In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of ODU at night which has low cooling load.

Night Low Noise Function

Max. RPM setting method

Dip S/W No.12+14 ON

Master ODU SW01B

Main PCB Power Reset

Note 1)

STEP 1: Max. RPM =510 Black button 1 time + red button 1 time

STEP 2: Max. RPM = 450

Master ODU SW01S

SW01V

SW02V

Black button 2 times + red button 1 time

STEP 3: Max. RPM = 400 Black button 3 times + red button 1 time

Setting Complete

Night Low Noise Start

8 hours after max. ODU temp. sensing,

Operates with setting RPM

Night Low Noise End

9 hours after Night Low Noise function

start, the function ends automatically.

Caution

1. Request installer to set the function during installation.

2. In case the function is not used, set the dip S/W OFF and reset the power.

3. If ODU RPM changes, cooling capacity may go down.

[Note]

1. Select appropriate RPM referencing noise table.

Installation Manual 73

ENGLISH

Test Run

This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition/replacement.

This function secures the air flow rate of ODU, in case static pressure has been applied like using duct at fan

discharge of ODU.

■ Static pressure compensation dip S/W setting method

High static pressure mode (Max. RPM 930) : Master ODU Main PCB SW02B NO.13 Dip S/W

Low static pressure mode (Max. RPM 900) : Master ODU Main PCB SW02B NO.12 Dip S/W

Vacuum Mode

Static pressure compensation mode

Vacuum mode setting method Vacuum mode cancellation method

Main PCB SW01S

Main PCB SW02B

Main PCB SW01V

Master main PCB DIP switch ON ( No.11,14)

Press the black button Main PCB (5 sec.)

Caution

ODU operation stops during vacuum mode. Compressor can't operate.

ODU power reset

Vacuum mode setting

ODU V/V OPEN

Main EEV, SC EEV OPEN

IDU EEV OPEN

Master main PCB DIP switch OFF( No.11,14)

Power reset

Vacuum mode cancellation

Static pressure compensation mode setting

High static pressure:No. 13

Static pressure compensation mode is set

method

DIP switch setting

Low static pressure:No.12

Power Reset

Static pressure compensation mode cancellation

method

DIP switch OFF

Power Reset

Static pressure compensation mode is cancelled

74 Outdoor Unit

DC charging is not performed at Master outdoor unit after starting relay turn on.

DC charging is not performed at slave outdoor unit after starting relay turn on.

System is turned off by Master outdoor unit high pressure switch.

System is turned off by slave outdoor unit high pressure switch.

Master Outdoor Unit Inverter Compressor DC link Low Voltage

slave Outdoor Unit Inverter Compressor DC link Low Voltage

Master Outdoor Unit High Pressure Switch

slave Outdoor Unit High Pressure Switch

74 Outdoor Unit

Test Run

Self-Diagnosis Function

Error Indicator

• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.

• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of

outdoor unit control board as shown in the table.

• If more than two troubles occur simultaneously, lower number of error code is first displayed.

• After error occurrence, if error is released, error LED is also released simultaneously.

Error Display

1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.

Ex) 211 : No.21 error of master unit

213 : No.21 error of slave 011 → 051 : No.105 error of master unit

Display Title Cause of Error

01-

02-

03-

04-

05-

06-

07-

09-

10-

11-

Air temperature sensor of indoor unit

Inlet pipe temperature sensor of indoor unit

Communication error : wired remote controller ↔ indoor unit

Drain pump

Communication error : outdoor unit ↔ indoor unit

Outlet pipe temperature sensor of indoor unit

Different operation mode

Serial No.

Poor fan motor operation

Communication error: indoor unit → main PCB of outdoor.

Master Outdoor Unit Inverter Compressor IPM Fault

slave Outdoor Unit Inverter Compressor IPM Fault

Inverter Board Input Over Current(RMS) of Master Outdoor Unit

Inverter Board Input Over Current(RMS) of slave Outdoor Unit

Air temperature sensor of indoor unit is open or short

Inlet pipe temperature sensor of indoor unit is open or short

Failing to receive wired remote controller signal in indoor unit PCB

Malfunction of drain pump

Failing to receive outdoor unit signal in indoor unit PCB

Outlet pipe temperature sensor of indoor unit is open or short

Operation mode between indoor unit and outdoor unit is different

In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF

Disconnecting the fan motor connector/Failure of indoor fan motor lock

When the addressing signal doesn't respond for 3mins. suddenly, while the indoor unit gets the calling signal from the outdoor unit,

Master Outdoor Unit Inverter Compressor Drive IPM Fault

slave Outdoor Unit Inverter Compressor Drive IPM Fault

Master Outdoor Unit Inverter Board Input Current excess (RMS)

slave Outdoor Unit Inverter Board Input Current excess (RMS)

Indoor unit related error

Outdoor unit related error

Installation Manual 75

ENGLISH

Test Run

Master Outdoor Unit input voltage is over 487V or below 270V

slave Outdoor Unit input voltage is over 487V or below 270V

The First Start Failure by Master Outdoor Unit Inverter Compressor Abnormality

The First Start Failure by slave Outdoor Unit Inverter Compressor Abnormality

System is turned off by Master outdoor unit DC Voltage Over Charging

System is turned off by slave Outdoor unit DC Voltage Over Charging

Master Outdoor Unit Inverter Compressor Fault OR Drive Fault

slave Outdoor Unit Inverter Compressor Fault OR Drive Fault

System is turned off by Master outdoor unit Inverter Compressor High Discharge Temperature

System is turned off by slave Outdoor unit Inverter Compressor High Discharge Temperature

System is turned off by Master Outdoor Uunit Constant Speed High Discharge Temperature

System is turned off by slave Outdoor Unit Constant Speed High Discharge Temperature

System is turned off by excessive increase of high pressure of Master outdoor unit

System is turned off by excessive increase of high pressure of slave outdoor unit

System is turned off by excessive decrease of low pressure of Master outdoor unit

System is turned off by excessive decrease of low pressure of slave outdoor unit

Master Outdoor Unit Inverter Compressor CT Sensor open or short

slave Outdoor Unit Inverter Compressor CT Sensor open or short

Master Outdoor Unit Inverter Compressor Discharge Temperature Sensor open or short

slave Outdoor Unit Inverter Compressor Discharge Temperature Sensor open or short

Master Outdoor Unit Low Pressure Sensor open or short

slave Outdoor Unit Low Pressure Sensor open or short

Master Outdoor Unit Input Voltage High/ Low Voltage

slave Outdoor Unit Input Voltage High/ Low Voltage

Master Outdoor Unit Inverter Compressor Start Failure

slave Outdoor Unit Inverter Compressor Start Failure

Master Outdoor Unit Inverter DC link High Voltage

slave Outdoor Unit Inverter DC link High Voltage

Master Outdoor Unit Inverter Compressor Over Current

slave Outdoor Unit Inverter Compressor Over Current

Master Outdoor Unit Inverter Compressor High Discharge Temperature

slave Outdoor Unit Inverter Compressor High Discharge Temperature

Master Outdoor Unit Constant Speed Compressor High Discharge Temperature

slave Outdoor Unit Constant Speed Compressor High Discharge Temperature

High Pressure of Master Outdoor Unit

High Pressure of slave Outdoor Unit

Low Pressure of Master Outdoor Unit

Low Pressure of slave Outdoor Unit

Master Outdoor Unit Inverter Compressor CT Sensor Fault

slave Outdoor Unit Inverter Compressor CT Sensor Fault

Master Outdoor Unit Inverter Compressor Discharge Temperature Sensor Fault

slave Outdoor Unit Inverter Compressor Discharge Temperature Sensor Fault

Master Outdoor Unit Low Pressure Sensor Fault

slave Outdoor Unit Low Pressure Sensor Fault

Display Title Cause of Error

Outdoor unit related error

76 Outdoor Unit76 Outdoor Unit

Test Run

Display Title Cause of Error

511

531

591

Outdoor unit related error

Master Outdoor Unit High Pressure Sensor Fault

slave Outdoor Unit High Pressure Sensor Fault

Master Outdoor Unit Air Temperature Sensor Fault

slave Outdoor Unit Air Temperature Sensor Fault

Master Outdoor Unit Heat Exchanger Temperature Sensor(A) Fault

slave Outdoor Unit Heat Exchanger Temperature Sensor(A) Fault

Master Outdoor Unit Suction Temperature Sensor Fault

slave Outdoor Unit Suction Temperature Sensor Fault

Master Outdoor Unit Constant Speed Compressor Discharge Temperature Sensor Fault

slave Outdoor Unit Constant Speed Compressor Discharge Temperature Sensor Fault

Master Outdoor Unit Heat Exchanger Temperature Sensor(B) Fault

slave Outdoor Unit Heat Exchanger Temperature Sensor(B) Fault

Omitting connection of R, S, T power of Master Outdoor unit

Omitting connection of R, S, T power of slave outdoor unit

Excessive capacity of indoor units

Communication error : inverter PCB → Main PCB

Communication error : indoor unit → main PCB of outdoor unit

Reverse connection of R, S, T power of Master Outdoor unit

Reverse connection of R, S, T power of slave outdoor unit

Mixing Installation of Sub Outdoor Unit

Master Outdoor Unit High Pressure Sensor open or short

slave Outdoor Unit High Pressure Sensor open or short

Master Outdoor Unit Air Temperature Sensor open or short

slave Outdoor Unit Air Temperature Sensor open or short

Master Outdoor Unit Heat Exchanger Temperature Sensor(A) open or short

slave Outdoor Unit Heat Exchanger Temperature Sensor(A) open or short

Master Outdoor Unit Suction Temperature Sensor open or short

slave Outdoor Unit Suction Temperature Sensor open or short

Master Outdoor Unit Constant Speed Compressor Discharge Temperature Sensor open or short

slave Outdoor Unit Constant Speed Compressor Discharge Temperature Sensor open or short

Master Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short

slave Outdoor Unit Heat Exchanger Temperature Sensor(B) open or short

Omitting connection of Master outdoor unit

Omitting connection of slave outdoor unit

Excessive connection of indoor units compared to capacity of outdoor unit

Failing to receive inverter signal at main PCB of Master Outdoor Unit

Failing to receive inverter signal at main PCB of slave Outdoor Unit

Failing to receive indoor unit signal at main PCB of outdoor Unit.

Reverse connection or omitting connection of R, S, T power of Master outdoor unit

Reverse connection or omitting connection of R, S, T power of slave outdoor unit

Mixing Installation of Old Sub outdoor unit and New Slave Outdoor Unit

Installation Manual 77

ENGLISH

Test Run

Display Title Cause of Error

Outdoor unit related error

Access Error of Inverter PCB of Master Outdoor Unit

Access Error of Inverter PCB of slave Outdoor Unit

Restriction of Master Outdoor Unit

Restriction of slave Outdoor Unit

Constant CT Sensor open or short of Master Outdoor Unit

Constant CT Sensor open or short of slave Outdoor Unit

Master Outdoor Unit PFC CT Sensor open or short

slave Outdoor Unit PFC CT Sensor open or short

Instant Over Current(Peak) of Master Outdoor Unit PFC

Instant Over Current(Peak) of slave Outdoor Unit PFC

Master Outdoor Unit R-T Phase Difference is over 5A

slave Outdoor Unit R-T Phase Difference is over 5A

Master Outdoor Unit Fan CT Sensor open or short

slave Outdoor Unit Fan CT Sensor open or short

Master Outdoor Unit Fan DC Link High Voltage Error

slave Outdoor Unit Fan DC Link High Voltage Error

Master Outdoor Unit Fan Current is over 5A

slave Outdoor Unit Fan is over 5A

Master Outdoor Unit Fan Hall Sensor open or Short

slave Outdoor Unit Fan Hall Sensor open or Short

Master Outdoor Unit Fan First Position Sensing Failure

slave Outdoor Unit Fan First Position Sensing Failure

Communication Fail Between Master Outdoor Unit Main MICOM and EEPROM or omitting EEPROM

Communication Fail Between slave Outdoor Unit Main MICOM and EEPROM or omitting EEPROM

Communication Fail Between Master Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM

Communication Fail Between slave Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM

Inverter PCB EEPROM Error of Master Outdoor Unit

Inverter PCB EEPROM Error of slave Unit

Master Outdoor Unit Fan Lock

slave Outdoor Unit Fan Lock

Constant CT Sensor Error of Master Outdoor Unit

Constant CT Sensor Error of slave Outdoor Unit

PFC CT Sensor Error of Master Outdoor Unit

PFC CT Sensor Error of slave Outdoor Unit

Instant Over Current(Peak) of Master Outdoor Unit PFC

Instant Over Current(Peak) of slave Outdoor Unit PFC

Master Outdoor Unit 3 Phase Power unbalance

slave Outdoor Unit 3 Phase Power unbalance

Master Outdoor Unit Fan CT Sensor Error

slave Outdoor Unit Fan CT Sensor Error

Master Outdoor Unit Fan DC Link High Voltage Error

slave Outdoor Unit Fan DC Link High Voltage Error

Master Outdoor Unit Fan Over Current Error

slave Outdoor Unit Fan Over Current Error

Master Outdoor Unit Fan Hall Sensor Error

slave Outdoor Unit Fan Hall Sensor Error

Master Outdoor Unit Fan Start Failure Error

slave Outdoor Unit Fan Start Failure Error

Master Outdoor Unit Main PCB EEPROM Error

slave Outdoor Unit Main PCB EEPROM Error

Master Outdoor Unit Fan PCB EEPROM Error

slave Outdoor Unit Fan PCB EEPROM Error

78 Outdoor Unit78 Outdoor Unit

Test Run

Failing to receive Slave Unit signal at main PCB of Master outdoor unit

Failing to receive master and other Slave Unit signal at main PCB of slave outdoor unit

Failing to receive fan signal at main PCB of master unit.

Failing to receive fan signal at main PCB of slave unit.

Instant Over Current at Master Outdoor Unit Fan IPM

Instant Over Current at slave Outdoor Unit Fan IPM

Master Outdoor Unit Fan DC Link Input Voltage is under 380V

slave Outdoor Unit Fan DC Link Input Voltage is under 380V

Liquid pipe temperature sensor of Master outdoor unit is open or short

Liquid pipe temperature sensor of slave outdoor unit is open or short

Master Outdoor Unit Subcooling Inlet Temperature Sensor open or short

slave Outdoor Unit Subcooling Inlet Temperature Sensor open or short

Master Outdoor Unit Subcooling Outlet Temperature Sensor open or short

slave Outdoor Unit Subcooling Outlet Temperature Sensor open or short

Pressure unbalance between outdoor units

Comp locking, Check Valve leakage, comp dielectric break down at Master Outdoor Unit

Comp locking, Check Valve leakage, comp dielectric at slave Outdoor Unit

Master Outdoor Unit Fan Inverter PCB Temperature is Over 95°C

slave Outdoor Unit Fan Inverter PCB Temperature is Over 95°C

Master Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short

slave Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short

Communication Error Between Master Outdoor Unit and Other Outdoor Unit

Communication Error Between slave Outdoor Unit and Other Outdoor Unit

Master Outdoor Unit Fan PCB Communication Error

slave Outdoor Unit Fan PCB Communication Error

Master Outdoor Unit FAN IPM Fault Error

slave Outdoor Unit FAN IPM Fault Error

Master Outdoor Unit Fan DC Link Low Voltage Error

slave Outdoor Unit Fan DC Link Low Voltage Error

Master Outdoor Unit Liquid pipe Temperature Sensor Error

slave Outdoor Unit Liquid pipe Temperature Sensor Error

Master Outdoor Unit Subcooling Inlet Temperature Sensor Error

slave Outdoor Unit Subcooling Inlet Temperature Sensor Error

Master Outdoor Unit Subcooling Outlet Temperature Sensor Error

slave Outdoor Unit Subcooling Outlet Temperature Sensor Error

Failure of operation mode conversion at Master Outdoor Unit

Failure of operation mode conversion at slave Outdoor Unit

Master Outdoor Unit Constant Speed Compressor Fault

slave Outdoor Unit Constant Speed Compressor Fault

Excessive increase of Master Outdoor Unit Fan PCB Heat Sink Temperature

Excessive increase of slave Outdoor Unit Fan PCB Heat Sink Temperature

Master Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error

slave Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error

Display Title Cause of Error

10 4

10 5

10 6

10 7

11 3

11 4

11 5

15 1

17 3

19 3

19 4

Outdoor unit related error

Installation Manual 79

ENGLISH

Caution For Refrigerant Leak

The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following standards may be applicable if local regulations are not available.

Though the R410A refrigerant is harmless and incombustible itself , the room to equip the air conditioner should be large to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant gas leaks in the room.

■ Limiting concentration

Check limiting concentration along following steps and take appropriate measure depending on the situation.

■ Calculate amount of all the replenished refrigerant (lb) per each refrigerant system.

■ Calculate minimum room capacity

Calculate room capacity by regarding a portion as one room or the smaller room.

(1) Without partition

(2) With partition and with opening which serve as

passage of air to adjoining room

Caution For Refrigerant Leak

Introduction

Checking procedure of limiting concentration

Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken without hurting human body when refrigerant leaks in the air. The limiting concentration shall be described in the unit of lb/ft

(Freon gas weight per unit air volume) for facilitating calculation.

Limiting concentration: 0.028 lb/ft

(R410A)

Outdoor unit

(No.1 system)

Indoor unit

Flow of refrigerant

Room where refrigerant leaks (Refrigerant of the whole No.1 system flows out.)

Amount of replenished refrigerant per one outdoor unit system

Amount of replenished refrigerant at factory shipment

Indoor unit

Amount of additional

replenished refrigerant

Amount of additionally replenished refrigerant depending on piping length or piping diameter at customer

Outdoor unit

Total amount of replenished

refrigerant in refrigerant facility (lb)

Note : In case one refrigerant facility is

divided into 2 or more refrigerant systems and each system is independent, amount of replenished refrigerant of each system shall be adopted.

Outdoor unit

Indoor unit

Opening

Partition

In the case of opening without door , or 0.15 % or more openings (to floor space) both above and below door)

80 Outdoor Unit80 Outdoor Unit

Caution For Refrigerant Leak

(3) With partition and without opening which serve as passage of air to adjoining room

■ Calculate refrigerant concentration

■ In case the concentration exceeds the limit

When the concentration exceeds the limit, change original plan or take one of the countermeasures shown below:

• Countermeasure 1

Provide opening for ventilation. Provide 0.15% or more opening to floor space both above and below door, or provide opening without door.

• Countermeasure 2

Provide gas leak alarm linked with mechanical ventilator. Reducing the outdoor refrigerant qty.

Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant is heavier than air.

Outdoor unit

Indoor unit

Smallest room

Total amount of replenished refrigerant in refrigerant facility (lb)

Capacity of smallest room where indoor unit is installed (ft

)

Refrigerant concentration

(R410A)

(lb/ft

In case the result of calculation exceeds the limiting concentration, perform the

)

same calculations by shifting to the second smallest, and the third smallest rooms until at last the result is below the limiting concentration.

Countermeasure 2

Gas leak alarm

Mechanical ventilator

Indoor unit

Countermeasure 1

Opening effective to ventilation

Installation Manual 81

ENGLISH

Installation guide at the seaside

Sea wind Sea wind

CAUTION

Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.

2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.

3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it needs additional anticorrosion treatment on the heat exchanger.

Selecting the location(Outdoor Unit)

1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided. Install the outdoor unit on the opposite side of the sea wind direction.

2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.

Windbreak

Sea wind

• It should be strong enough like concrete to prevent the sea wind from the sea.

• The height and width should be more than 150% of the outdoor unit.

• It should be keep more than 27.6 inch of space between outdoor unit and the windbreak for easy air flow.

3) Select a well-drained place.

If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.

2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water

82 Outdoor Unit82 Outdoor Unit

Memo

P/No.: MFL46912303

Printed in Korea

After reading this manual, keep it in a place easily accessible to the user for future reference.

Lg Arun115bt2 Installation Guide

Specifications and Main Features

Frequently Asked Questions

User Manual