LG ARUB100LT3 INSTALLATION INSTRUCTIONS

MODELS

ARUB Series(Heat recovery)

P/NO : MFL46912317

www.lg.com

INSTALLATION MANUAL

AIR CONDITIONER

• Please read this installation manual completely before installing the product.

• Installation work must be performed in accordance with the national wiring standards by authorized personnel only.

• Please retain this installation manual for future reference after reading it thoroughly.your set and retain it for future reference.

ENGLISH ITALIANO

ESPAÑOL

FRANCAIS

DEUTSCH

PORTUGUESE

РУССКИЙ ЯЗЫК

ARUB Series Outdoor unit Installation Manual

TABLE OF CONTENTS

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

Installation Process ..............................................................................................................7

Outdoor units Information....................................................................................................8

Environment-friendly Alternative Refrigerant R410A ......................................................11

Select the Best Location.....................................................................................................11

Installation Space................................................................................................................13

Lifting method .....................................................................................................................15

Installation ...........................................................................................................................16

Refrigerant piping installation ...........................................................................................21

Pipe connections between indoor and outdoor unit .......................................................29

Electrical Wiring ..................................................................................................................52

HR Unit PCB.........................................................................................................................77

Test Run ...............................................................................................................................92

New Function ....................................................................................................................118

Caution For Refrigerant Leak...........................................................................................126

Installation guide at the seaside ......................................................................................128

Installation Guide for Harmonics.....................................................................................129

2 Outdoor Unit

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

n 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.

n 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.

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.

Installation Manual 3

Safety Precautions

ENGLISH

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.

n Operation

Do not damage or use an unspecified power cord.

•

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

Use a dedicated outlet for this appliance.

• There is risk of fire or electrical shock.

Be cautious that water could not enter the product.

•

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

Do not touch the power switch with wet hands.

•

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

When 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.

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.

n 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.

4 Outdoor Unit

Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.

• There is the risk of death, injury, fire or explosion.

Keep level even when installing the product.

• To avoid vibration or water leakage.

Do not install the unit where combustible gas may leak.

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

Use power cables of sufficient current carrying capacity and rating.

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

Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.

• There is risk of damage or loss of property.

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

• It can cause the injury, such as cutting the finger. Also the damaged fin may result in degradation of capacity.

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

•

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

Do not install the product where it is exposed to sea wind (salt spray) directly.

• It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

n 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.

Installation Manual 5

Safety Precautions

ENGLISH

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.

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.

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.

6 Outdoor Unit

Installation Process

• 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.)

Installation Manual 7

Installation Process

ENGLISH

Determination of division work

Preparation of contract drawings

Sleeve and insert work

Installation of indoor unit

Refrigerant piping work

Drain pipe work

Duct work

Heat insulation work

Electrical work

(connection circuits and drive circuits)

Airtight test

Vacuum drying

Additional charge of refrigerant

Indicate clearly who will be responsible for switch setting.

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

Take account of gradient of drain piping

Check model name to make sure the fitting is made correctly

Special attention to dryness, cleanness and tightness

Adjust to downward gradient

Make sure airflow is sufficient

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

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

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

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

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

Outdoor unit foundation work

Installation of outdoor unit

2

) there must be no drop in pressure.

The foundation must be level even

Avoid short circuits and ensure sufficient space is allowed for service

Fit facing panels

Automatic addressing of indoor unit

Test run adjustment

Transfer to customer with explanation

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

Refer to automatic addressing flowchart Preheat the crank case with the electrical heater for more than 6 hours.

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

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

Outdoor units Information

n Heat Recovery

n Combination Ration(50~200%)

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

If you want to connect more than 130% combination, please contact us and discuss the requirement like below.

1) If the operation of indoor unit is more than 130%, the airflow is operated as low in the all indoor units.

2) The number of () means the number of Max. connectable indoor units, when the connected capacity of indoor units is in the table above.

Outdoor Number Connection Capacity Single outdoor units 200% Double outdoor units 160%

Triple outdoor units 130%

Power Supply: Outdoor Unit (3Ø, 380 - 415V, 50Hz/3Ø, 380V, 60Hz)

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

1 Outdoor unit

8 10 12

ARUB80LT3 ARUB100LT3 ARUB120LT3 ARUB80LT3 ARUB100LT3 ARUB120LT3

5.0 6.4 6.4 13(20) 16(25) 20(30)

190 x 1 240 x 1 240 x 1

418 x 1 529 x 1 529 x 1 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1

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

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

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

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

1 Outdoor Unit

14 16 18 20

ARUB140LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 ARUB140LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3

7.0 7.0 7.5 9.0 23(35) 26(40) 29(45) 32(50)

270 x 1 270 x 1 320 × 1 330 × 1

595 x 1 595 x 1 705 x 1 727 x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1

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

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

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

8 Outdoor Unit

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD)

mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

2 Outdoor Unit

22 24 26 28

ARUB220LT3 ARUB240LT3 ARUB260LT3 ARUB280LT3 ARUB120LT3 ARUB120LT3 ARUB140LT3 ARUB160LT3 ARUB100LT3 ARUB120LT3 ARUB120LT3 ARUB120LT3

12.8 12.8 13.4 13.4 35(44) 39(48) 42(52) 45(56) 240 × 2 240 × 2 240 × 1 + 270 × 1 240 × 1 + 270 × 1 529 × 2 529 × 2 529 × 1 + 595 × 1 529 × 1 + 595 × 1

(920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2

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

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

(36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2

(36.2 x 66.1 x 29.9) x 1 (36.2 × 66.1 × 29.9) × 1

(48.8 x 66.1 x 29.9) x 1 (48.8 × 66.1 × 29.9) × 1

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

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

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

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

2 Outdoor Unit

30 32 34 36

ARUB300LT3 ARUB320LT3 ARUB340LT3 ARUB360LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 ARUB140LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3

14.0 14.0 14.5 16.0 49(60) 52(64) 55(64) 58(64) 270 × 2 270 × 2 270 × 1 + 320 × 1 270 × 1 + 330 × 1 595 × 2 595 × 2 595 × 1 + 705 × 1 595 × 1 + 727 × 1 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2

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

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

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

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD)

mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

2 Outdoor Unit 3 Outdoor Unit

38 40 42 44

ARUB380LT3 ARUB400LT3 ARUB420LT3 ARUB440LT3 ARUB200LT3 ARUB200LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 ARUB140LT3 ARUB160LT3

ARUB120LT3 ARUB120LT3

16.5 18.0 20.4 20.4 61(64) 64 64 64 320 × 1 + 330 × 1 330 × 2 240 × 1 + 270 × 2 240 × 1 + 270 × 2 705 × 1 + 727 × 1 727 × 2 529 × 1 + 595 × 2 529 × 1 + 595 × 2

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

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

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

(48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2

(36.2 × 66.1 × 29.9) × 1 (36.2 × 66.1 × 29.9) × 1

(48.8 × 66.1 × 29.9) × 2 (48.8 × 66.1 × 29.9) × 2

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

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

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

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

3 Outdoor Unit

46 48 50 52

ARUB460LT3 ARUB480LT3 ARUB500LT3 ARUB520LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB140LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3

21.0 21.0 21.5 23.0 64 64 64 64

270 × 3 270 × 3 270 × 2 + 320 × 1 270 × 2 + 330 × 1 595 ×3 595 ×3 595 × 2 + 705 × 1 595 × 2 + 727 × 1

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

(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3

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

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

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

Installation Manual 9

Outdoor units Information

ENGLISH

Outdoor units Information

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

3 Outdoor Unit

54 56 58 60

ARUB540LT3 ARUB560LT3 ARUB580LT3 ARUB600LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB140LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3

25.0 25.0 25.5 27.0 64 64 64 64

270 × 1 + 330 × 2 270 × 1 + 330 × 2 320 × 1 + 330 × 2 330× 3 595 × 1 + 727 × 2 595 × 1 + 727 × 2 7705 × 1 + 727 × 2 727× 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3

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

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

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

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

4 Outdoor Unit

62 64 66 68

ARUB620LT3 ARUB640LT3 ARUB660LT3 ARUB680LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB180LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB140LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3

28.0 28.0 28.5 29.0 64 64 64 64

270 × 4 270 × 4 270 × 3 + 320× 1 270 × 2 + 320× 2 595 × 4 595 × 4 595 × 3 + 705× 1 595 × 2 + 705× 2

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

(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4

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

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

41.3(1 5/8) 41.3(1 5/8) 44.5(1 3/4) 44.5(1 3/4)

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

4 Outdoor Unit

70 72 74 76

ARUB700LT3 ARUB720LT3 ARUB740LT3 ARUB760LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB180LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB160LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3 ARUB160LT3

30.5 32.0 32.5 34.0 64 64 64 64

270×2 + 320×1 + 330×1 270 × 2 + 330 × 2 270×1 + 320×1 + 330×2 270 × 1 + 330 × 3 595×2 + 705×1 + 727×1 595 × 2 + 727 × 2 595×1 + 705×1 + 727×2 595 × 1 + 727 × 3 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4

(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4

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

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

44.5(1 3/4) 44.5(1 3/4) 44.5(1 3/4) 44.5(1 3/4)

Unit System(HP) Model

Product Charge kg Max. Connectable No. of Indoor Units Net Weight kg

lbs

Dimensions (WxHxD) mm

inch

Connecting Pipes

Liquid [mm(inch)] Low Pressure Gas [mm(inch)] High Pressure Gas [mm(inch)]

4 Outdoor Unit

78 80

ARUB780LT3 ARUB800LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB180LT3 ARUB200LT3

34.5 36.0

64 64

320 × 1 + 330 × 3 330 × 4 705 × 1 + 727 × 3 727 × 4

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

(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4

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

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

44.5(1 3/4) 44.5(1 3/4)

10 Outdoor Unit

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 (near beach, coast, lake, etc. ) (Ex : Rooftop where there is always sunshine.)

• 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 11

Environment-friendly Alternative Refrigerant R410A

ENGLISH

Select the Best Location

n Select installation location of the HR unit suitable for following conditions

• Avoid a place where rain may enter since the HR unit is for indoor.

• Sufficient service space must be obtained.

• Refrigerant pipe must not exceed limited length.

• Avoid a place subject to a strong radiation heat from other heat source.

• Avoid a place where oil spattering, vapor spray or high frequency electric noise is expected.

• Install the unit at a place in which it is not affected by operation noise. (Installation within cell such as meeting room etc. may disturb business due to noise.)

• Place where refrigerant piping, drain piping and electrical wiring works are easy.

100 more (Serviceing space)

:

1. Be sure to install the inspection door at the control box side.

2. If reducers are used, servicing space must be increased equal to reducer's dimension.

NOTICE

(Unit: mm)

12 Outdoor Unit

No. Part Name

Description

PRHR041/031 PRHR021

1 Low pressure Gas pipe connection port Ø28.58 Brazing connection Ø22.2 Brazing connection

2 High pressure Gas pipe connection port Ø22.2 Brazing connection Ø19.05 Brazing connection

3 Liquid pipe connection port

Ø15.88 Brazing connection(PRHR041)

Ø9.52 Brazing connection

Ø12.7 Brazing connection(PRHR031)

4 Indoor unit Gas pipe connection port Ø15.88 Brazing connection Ø15.88 Brazing connection

5 Indoor unit Liquid pipe connection port Ø9.52 Brazing connection Ø9.52 Brazing connection

6 Control box - -

7 Hanger metal M10 or M8 M10 or M8

481

7

345

300more

1

(Servicing space)

(NOTICE 2)

100 more

100 more (Serviceing space)

(Serviceing space)

300more

(Servicing space)

2

3

100 more

100 more (Serviceing space)

(Serviceing space)

450

218

Inspection door(NOTICE 1) (servicing space)

453(174)

(174)

182

300more

(Servicing space)

124

128

6

(NOTICE 2)

41961 (137)

450more

(Servicing space)

54

30 60

Installation Space

Individual Installation

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

as shown in the figures below.

Installation Manual 13

Installation Space

ENGLISH

) -

*

,

)

+

*

,

-

+

) -

*

.

+

,

) -

*

.

+

,

)

-

*

)

*

-

Category

Case 1

(10mm≤Side Space≤49mm)

Case 2

(Side Space

≥

49mm)

Installation Space

4 sides are

walls

Only 2 sides

are walls

Limitations on

the height of

the wall

(Refer to 4

side walls)

Front

No limit to the height of the wall

Front

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

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

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

• If the height of the walls on the front and the inlet side are higher than the limit, there must be additional space on the front and the inlet side.

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

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

- h2 = A(Actual height) - 1500

- h1 = B(Actual height) - 500

A≥10 A≥50 B≥300 B≥100 C≥10 C≥50 D≥500 D≥500

A≥10 A≥50 B≥300 B≥100 C≥10 C≥50 D≥500 D≥500 E≥20 E≥100

A≥10 A≥50 B≥300 B≥100 C≥10 C≥50 D≥500 D≥500 E≥20 E≥100 F≥600 E≥500

A≥10 A≥50 B≥300 B≥100 C≥10 C≥50 D≥300 D≥100 E≥20 E≥100 F

≥500 E≥500

A≥10 B≥300

A≥200 B≥300 E≥400

P



)



P



*



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 Space

14 Outdoor Unit

Lifting method

Installation Manual 15

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.

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

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

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

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

• Use 2 belts of at least 8 m long.

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

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

Weight per Capacity

Chassis

Capacity(HP) Weight(kg)

UX2

8 190 10 240 12 240

UX3

14 270 16 270 18 320 20 330

Locking points for

transportation ropes

Forklift Carrying Hole

Forklift Carrying Guide

Installation

The location of the Anchor bolts

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

• The outdoor unit supports at the bottom should have width of at least 100mm under the unitʼs legs before being fixed.

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

• Anchor bolts must be inserted at least 75mm.

Chassis Capacity (HP) A(mm) B(mm)

UX2 8 ~ 12 920 792 UX3 14 ~ 20 1240 1102

16 Outdoor Unit

For outdoor units of 23kW or above should not be supported only by the corner supports.

6565

At least 100mm

At least 65At least 65

At least 100mm

Needed for outdoor units of 23kW or above

Center of the Unit

At least 100mm

Needed for outdoor units of 23kW or above

Center of the Unit

Unit : mm

730

760

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).

WARNING

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

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

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

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

WARNING

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

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

At least 200mm

Unit : mm

200

75

200

100

- The corner part must be fixed firmly. Otherwise, the support for the installation may be bent.

- Get and use M10 Anchor bolt.

- Put Cushion Pad between the outdoor unit and ground support for the vibration protection in wide area.

- Space for pipes and wiring (Pipes and wirings for bottom side)

- H-beam support

- Concrete support

Pallet(Wood Support)

- Remove before Installation

Installation Manual 17

Installation

ENGLISH

Installation

Preparation of Piping

1) Cut the pipes and the cable.

n Use the accessory piping kit or the pipes purchased

locally.

n Measure the distance between the indoor and the out-

door unit.

n Cut the pipes a little longer than measured distance. n Cut the cable 1.5m longer than the pipe length.

2) Burrs removal

n Completely remove all burrs from the cut cross section

of pipe/tube.

n Put the end of the copper tube/pipe to downward direc-

tion as you remove burrs in order to avoid to let burrs drop in the tubing.

3) Flaring work

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

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

4) Check

n Compare the flared work with figure below. n If flare is noted to be defective, cut off the flared section

and do flaring work again.

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

Pipe

" A "

Gas Liquid Gas

Liquid <5.6(19,100) 1/2" 1/4" 0.5~0.8 0~0.5 <16.0(54,600) 5/8" 3/8" 0.8~1.0 0.5~0.8 <22.4(76,400) 3/4" 3/8" 1.0~1.3 0.5~0.8

Indoor unit [kW(Btu/h]

Copper

tube

90

Slanted Uneven Rough

Pipe

Reamer

Point down

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches.

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

18 Outdoor Unit

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

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

3. Make sure to tighten the cap securely.

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

2. Securely tighten the valve until the shaft contacts the main body seal.

3. Make sure to tighten the cap securely. * For the tightening torque, refer to the table on the below.

Precautions when connecting pipes

• See the following table for flare part machining dimensions.

• When connecting the flare nuts, apply refrigerant oil to the inside and outside of the flares and turn them three

or four times at first. (Use ester oil or ether oil.)

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

• After all the piping has been connected, use nitrogen to perform a gas leak check.

Tightening torque

Union

CAUTION

• Always use a charge hose for service port connection.

•

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

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

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

Opening shutoff valve

Closing shutoff valve

FLARE SHAPE and FLARE NUT TIGHTENING TORQUE

pipe size tightening torque(Ncm) A(mm) flare shape

Ø9.5 3270-3990 12.8-13.2

Ø12.7 4950-6030 16.2-16.6

Ø15.9 6180-7540 19.3-19.7

Shutoff

valve size

Tightening torque N-m(Turn clockwise to close)

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

Gas line piping attached to unit

Ø6.4

5.4-6.6

Hexagonal

wrench 4mm

13.5-16.5

11.5-13.9

14-17

-

Ø9.5 33-39

Ø12.7 8.1-9.9 18-22 50-60

Ø15.9 13.5-16.5

Hexagonal

wrench 6mm

23-27 62-75

Ø22.2

27-33

Hexagonal

wrench 10mm

36-44 - 22-28

Ø25.4

Installation Manual 19

Installation

ENGLISH

2

90

45

2

A

R=0.4~0.8

Installation

1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).

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

• Heat insulation material to be prepared... EPDM

(Ethylene Propylene Diene Methylene)-over 120°C the heat-resistance temperature.

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

HEAT INSULATION

20 Outdoor Unit

Indoor unit

Fastening band (accessory)

Refrigerant piping

Thermal insulator (accessory)

Precautions on Pipe connection / Valve operation

Refrigerant piping installation

Low Pressure

Gas pipe

Liquid pipe

High Pressure

Gas pipe

Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit. Flare connection for the indoor unit, and welding connection for the outdoor pipe and the branching parts.

• Use hexagonal wrench to open/close the valve.

WARNING

• Always careful not to leak the refrigerant during welding.

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

• Do not perform welding in a closed space.

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

CAUTION

Please block the pipe knock outs of the front and side panels after installing the pipes. (Animals or foreign objects may be brought in to damage the cables.)

Installation Manual 21

Refrigerant piping installation

ENGLISH

Refrigerant piping installation

2, 3, 4 Outdoor Units

Connection of Outdoor units

For more information, refer accessory installation manual.

[Unit : mm]

Y branch

A

B

To outdoor unit To branch piping or indoor unit

A B

Facing

upwards

Facing

downwards

Within ± 3° Within ± 3°

Viewed from point A in direction of arrow

Within +/- 10

22 Outdoor Unit

Outdoor units Model

Low Pressure Gas Pipe Liquid Pipe High Pressure Gas Pipe

416 408

I.D.28.58 I.D.28.58

I.D.34.9

I.D.31.8

I.D.41.3 I.D.38.1

O.D.34.9

130

341 298

I.D.41.3

O.D.34.9

I.D.41.3

125

415 375

I.D.44.48 I.D.53.98

2 Unit

3 Unit

4 Unit

C

ARCNB21

ARCNB31

C

A

C

ARCNB41

I.D.22.2

I.D.34.9

I.D.41.3

I.D.28.58

I.D.15.88 I.D.15.88

111

I.D.19.05

I.D.22.2

111

I.D.22.2

134

I.D.19.05

O.D.19.05

70

80

331 314

I.D.12.7

334 281

O.D.22.2I.D.25.4

I.D.12.7

I.D.15.88

I.D.9.52

I.D.19.05

83

I.D.15.88

83

I.D.12.7

83

I.D.12.7

334 281

I.D.22.2

I.D.19.05

416 408

I.D.28.58 I.D.28.58

I.D.34.9

I.D.31.8

I.D.41.3 I.D.38.1

O.D.34.9

130

341 298

I.D.41.3

O.D.34.9

I.D.41.3

125

I.D.19.05

I.D.15.88

I.D.22.2

I.D.34.9

83

I.D.12.7

111

I.D.28.58

111

I.D.28.58

Installation of Outdoor Unit, HR Unit, Indoor Unit Refrigerant Pipe

3 pipes are connected to the HR unit from the outdoor unit, classified into liquid pipe, low pressure gas pipe and high pressure gas pipe depending on status of refrigerant passing through the pipe.

You must connect 3 pipes from outdoor unit to HR unit.

For connection between indoor unit and HR unit, you must connect both liquid pipe and gas pipe from the HR unit to the indoor unit. In this case, connect them to the indoor unit starting from No.1 connection port of the HR unit (the port number is displayed on ports of the HR unit). Use auxiliary flare as annexed parts in connection to the indoor unit.

CAUTION:

Whenever connecting the indoor units with the HR unit, install the indoor units in numerical order from No.1.

Ex) In case of installing 3 indoor units : No. 1, 2, 3 (O), No. 1, 2, 4 (X), No.1, 3, 4 (X), No.2, 3, 4 (X).

Installation procedure for HR unit

Hanger metal

Flat washer

Hanging bolt

1. Using an insert-hole-in- anchor, hang the hanging bolt.

2. Install a hexagon nut and a flat washer (locally-procured)to the hanging bolt as shown in the figure in the bottom, and fit the main unit to hang on the hanger metal.

3. After checking with a level that the unit is level, tighten the hexagon nut. * The tilt of the unit should be within ±5° in front/back and left/right.

4. This unit should be installed suspended from ceiling and side A should always be facing up.

5. Insulate not used pipes completely as shown in the figure.

Installation Manual 23

Refrigerant piping installation

ENGLISH

Six-sided Nut (M10 or M8)

Hanger metal

Flat washer

Flat washer (M10)

Hanging bolt

Hanging bolt (M10 or M8)

A

Insulation

Gas pipe

Liquid pipe

Low pressure Gas pipe

High pressure Gas pipe

HR Unit

2

1

4

3

Liquid pipe

Gas pipe

Liquid pipe

Refrigerant piping installation

24 Outdoor Unit

Type of HR Unit

Select an HR unit according to the number of the indoor units to be installed. HR units are classified into 3 types by the number of connectable indoor units.

Ex) Installation of 6 indoor units

Consists of HR unit for 4 branches and HR unit for 2 branches.

Joint Method of HR Unit (Big Duct : URNU76GB8-, URNU96GB8-)

Joint Method is required when B5/B8 chassis is installed. In Joint Method, two neighboring outlets of one HR unit are linked by Y branch pipe and connected to one indoor unit.

1

st

HR Unit 2

nd

HR Unit

1

2

3

4

B8

(96k) (28k)

BG

1

2

3

4

B8

(76k)(21k)

BH

HR unit

PRHR021

PRHR031

PRHR041

Low pressure gas pipe

Ø22.2

Ø28.58

High pressure gas pipe

Ø19.05

Ø22.2

Liquid pipe Ø9.52

Ø12.7

Ø15.88

4

2

1

3

2

1

PRHR031(3 branches)PRHR021(2 branches) PRHR041(4 branches)

3

2

1

Liquid pipe

Low pressure gas pipe

High pressure gas pipe

Remove caps on The brazing part.

4

3

2

1

Gas pipe Ø15.88 Liquid pipe Ø9.52 Brazing Type

Refrigerant piping installation

Installation Manual 25

ENGLISH

Installation of Zoning Control

Some indoor unit can be connected to one port of HR unit.

WARNING

• A branch pipe of HR unit allows up to 14.1kW based on cooling capacity of the indoor unit. (up to 14.1kW (48kBtu/h) for max installation)

• The maximum total capacity of indoor units connected to a PRHR041 HR unit is 56.4kW (192 kBtu/h).

• The maximum number of indoor units connected to a PRHR041 HR unit are 32 indoor units. (The Maximum indoor units per a branch pipe of HR unit are 8 indoor units)

• There is not operate “Auto-changeover” & “Mode override” function in the zoning group.

• When there are operating indoor units on cooling(heating) mode, another indoor units arenʼt changed on heating(cooling) mode in the zoning group.

HR unit HR unit

Zoning control group 1 Zoning control group 2

(MAX 8 Indoor Units)

Changeover under control Auto changeover Changeover under control

sealing

(MAX 8 Indoor Units)

Refrigerant piping installation

[ Reducers for indoor unit and HR unit ]

Models

High pressure

Gas pipe

Low pressure

Liquid pipe

Indoor unit

reducer

HR unit

reducer

PRHR021

OD22.2 Ø19.05 Ø15.88

OD15.88 Ø

12.7

Ø6.35OD9.52

OD19.05 Ø15.88 Ø12.7

OD22.2 Ø19.05 Ø15.88

OD15.88 Ø12.7

PRHR031/ PRHR041

OD19.05 Ø15.88

OD28.58 Ø22.2 Ø19.05

OD12.7 Ø9.52

OD15.88 Ø12.7

OD15.88 Ø12.7 Ø9.52

(Unit: mm)

26 Outdoor Unit

Installation Manual 27

Refrigerant piping installation

ENGLISH

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 perform a pump down. This will not only damage the compressor but also deteriorate the perfor-

mance.

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

Caution

ARBL054 ARBL057 ARBL1010

ARBL104 ARBL107 ARBL2010

Y branch

ARBLB01621, ARBLB03321, ARBLB07121,

ARBLB14521, ARBLB23220

Header

4 branch 7 branch 10 branch

Outer diameter

[mm]

6.35 9.52 12.7 15.88 19.05 22.2 25.4 28.58 31.8 34.9 38.1 41.3 44.45 53.98

Minimum

thickness [mm]

0.8 0.8 0.8 0.99 0.99 0.99 0.99 0.99 1.1 1.21 1.35 1.43 1.55 2.1

To Outdoor Unit

A B

Sealed Piping

A

B

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.

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.

28 Outdoor Unit

Installation Manual 29

Refrigerant piping installation

ENGLISH

• Pipe connections can be done on the front side or on the side according to the installation environments.

• Be sure to let 0.2kgf/cm

2

Nitrogen flow in the pipe when welding.

• If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe and disturb the normal operations of valves and condensers.

• Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs.

Refrigerant Pipe

Regulator

Nitrogen

Nitrogen Direction

Taping

Valve

1. Open the front panel.

2. Remove Brackets

3. Fix with only nut and washer as shown in the figure.

Brackets for Transportation

Washer

Nut

Pipe connections between indoor and outdoor unit

Preparation Work

CAUTION

•

Do not give damage to the pipe/base during the Knock Out work.

•

Proceed to pipe work after removing burr after Knock Out work.

• Perform sleeve work to prevent damage to the wire when connecting wires using knock Outs.

CAUTION

• Remove the brackets on the inverter condenser legs that were fixed to protect the unit during the transportation. (If bracket is not removed, abnormal noise or vibration may occur.)

Right Side Pipe Draw Out

Left Side Pipe Draw Out

Front Side Pipe Draw Out

Removal Area for common pipe bottom side connections.

Removal Area for Liquid/Gas pipe bottom side connections.

Pipe connections between indoor and outdoor unit

n Remove leakage prevention cap

• Remove the leakage prevention cap attached to the outdoor unit service valve before pipe work.

• Proceed the leakage prevention cap removal as follows:

1. Verify whether the Liquid/Low Pressure/High Pressure

Gas pipes are locked.

2. Extract remaining refrigerant or air inside using the ser-

vice port.

3. Remove the leakage prevention cap

n Method of drawing out pipes on the front side

• Proceed with the pipe work as shown in the below figure for front side pipe drawing out.

Pipe Drawing Out during Single / Series connection

Liquid pipe Low Pressure Gas pipe

High Pressure Gas pipe

Pipe Knock Out for Liquid

/Low Pressure Gas pipes

Pipe Knock Out for High

Pressure Gas pipe

30 Outdoor Unit

Service Port

Liquid pipe

Low Pressure

Gas pipe

High Pressure

Gas pipe

Leakage Prevention Cap

Installation Manual 31

Pipe connections between indoor and outdoor unit

ENGLISH

High Pressure Gas pipe Liquid pipe Low Pressure Gas pipes

Remove only liquid/gas pipe Knock Out

• Removal of Base pan

High Pressure Gas pipe

• Removal of Base pan

Liquid pipe Low Pressure Gas pipes

n Method of drawing out pipes on the bottom side

①

Drawing out common pipe through side panel

n Figure of Sides when drawing out through bottom pipe

②

Drawing out common pipe through bottom pipe

i) Single/Series outdoor units

(Draw out High Pressure Gas pipe through bottom)

ii) Single/Series outdoor units

(Draw out High Pressure Gas pipe through side panel)

Remove Pipe Knock Out Hole

Pipe connections between indoor and outdoor unit

Refrigerant piping system

32 Outdoor Unit

3 Outdoor Units

Example : 12 Indoor Units connected

Ⓐ : Outdoor Unit Ⓑ : Y branch Ⓓ : Indoor Unit Ⓔ : Connection branch pipe between Outdoor units : ARCNB31 Ⓕ : Connection branch pipe between Outdoor units : ARCNB21 Ⓖ : Header Ⓗ: HR Unit

Slave 2

A3

Slave 1

A2

Master

A1

F3

F2

F1

E

E2

E1

1

D

2

H

D

3

h

a

b

H1

c

d

D

4

A

B1

B

C1

B2

"a"

C3

C2

H2

f

e

D

6

D

5

■ Case 1 ("a")

: Maximum height is 15m if you install with Y branch.

■ Case 2 ("b")

: Maximum height is 5m in serial connection of HR units.

ODU Capacity

Master ≥ Slave1 ≥ Slave 2

H3

g

i

D

7

D

8

9

*

"b"

H4

j

l

m

D

10

k

G

sealing

x

n

D

12

11

Installation Manual 33

Pipe connections between indoor and outdoor unit

ENGLISH

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

WARNING

* : Serial connection of HR units : Capacity sum of indoor units ≤ 192.4 kBtu/hr

• Refer to the HR unit PCB part for the valve group control setting.

• It is recommended that difference in pipe lengths between an HR unit and indoor units, for example

difference in length of a, b, c, and d, be minimized. The larger difference in pipe lengths, the more different performance between indoor units.

• Piping length from outdoor branch to outdoor unit ≤ 10m, equivalent length : max 13m (for 22HP or more)

j If the large capacity indoor units (Over 5 HP; using over Ø15.88/Ø9.52) are installed, it should be used the

Valve Group setting

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

Ú Total pipe length = A+B+C1+C2+C3+a+b+c+d+e+f+g+i+j+k+l+m+n ≤ 1,000m

Longest pipe length * Equivalent pipe length A+B+C3+D+k ≤ 150m(200m**) A+B+C3+D+k ≤ 175m(225m**) Longest pipe length after 1st branch B+C3+D+k ≤ 40m(90m**) Difference in height(Outdoor Unit ÷ Indoor Unit) H ≤ 110m Difference in height (Indoor Unit ÷ Indoor Unit) h ≤ 15m Difference in height (Outdoor Unit ÷ Outdoor Unit) h1 ≤ 5m Difference in height(HR Unit ↔ HR Unit) a ≤ 15m , b ≤ 5m ,

L

l

H

h

h1

"a", "b"

• * :

Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, calculation purpose

• It is recommended that indoor unit is installed at lower position than the header.

Downward indoor unit

total capacity [kW(Btu/h)]

Liquid pipe

[mm(inch)]

Gas pipe [mm(inch)]

Low pressure High pressure

≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) Ø9.52(3/8) < 16.0 (54,600) Ø9.52(3/8) Ø15.88(5/8) Ø12.7(1/2) < 22.4 (76,400) Ø9.52(3/8) Ø19.05(3/4) Ø15.88(5/8)

< 33.6(114,700) Ø9.52(3/8) Ø22.2(7/8) Ø19.05(3/4) < 50.4(229,000) Ø12.7(1/2) Ø28.58(1

1

/8) Ø22.2(7/8)

< 61.6(210,600) Ø15.88(5/8) Ø28.58(1

1

/8) Ø22.2(7/8)

< 72.8(210,600) Ø15.88(5/8) Ø34.9(1

3

/8) Ø28.58(1 1/8)

< 100.8(344,000) Ø19.05(3/4) Ø34.9(1

3

/8) Ø28.58(1 1/8)

< 173.6(592,500) Ø19.05(3/4) Ø41.3(1

5

/8) Ø34.9(1 3/8)

< 184.8(630,700) Ø22.2(7/8) Ø44.5(1

3

/4) Ø41.3(1 5/8)

≤ 224.0(764,400) Ø22.2(7/8) Ø53.98(2

1

/8) Ø44.5(1 3/4)

Pipe connections between indoor and outdoor unit

34 Outdoor Unit

WARNING

When the equivalent length between a outdoor and the farthest indoor unit is 90m or more, main pipe(A) must be increased one grade.

Ú Refrigerant pipe diameter from outdoor unit to first branch. (A)

h If available on site, it use this size. Otherwise it can't be increased.

Upward outdoor

unit total capacity

Pipe diameter Pipe diameter when pipe length is 90m over to 1st branch

HP

Liquid

mm(inch)

Low pressure gas pipe

mm(inch)

High pressure gas pipe

mm(inch)

Liquid

mm(inch)

Low pressure gas pipe

mm(inch)

High pressure gas pipe

mm(inch)

8

9.52(3/8)

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

12.7(1/2)

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

10 22.2(7/8)

19.05(3/4)

25.4(1)

22.2(7/8)

12

12.7(1/2)

28.58(1-1/8)

15.88(5/8)

31.8(1-1/4)

14

22.2(7/8) 25.4(1)

16 18

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

20 22

34.9(1-3/8)

28.58(1-1/8)

38.1(1-1/2)

31.8(1-1/4)

24 26

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

28 30 32 34 36

41.3(1-5/8) 44.5(1-3/4)

38 40 42

34.9(1-3/8) 38.1(1-1/2)

44 46 48 50 52 54 56 58 60 62

22.2(7/8)

44.5(1-3/4) 41.3(1-5/8)

25.4(1) 53.98(2-1/8)

44.5(1-3/4)

64 66

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

68 70 72 74 76 78 80

Installation Manual 35

Pipe connections between indoor and outdoor unit

ENGLISH

Ú Y branch, Header and HR unit connection pattern

Pattern 1 Pattern 2

Pattern 3

Pattern 5

HR1

48k 48k

1

2

234567

HR2

48k 48k

7k 7k 7k 7k 7k 24k 24k

3 4

B

HR1

48k 48k 48k 48k

1 2 3 4

Pattern 4

12k 12k 12k 12k

1 2 3 4

HR1

48k

24k 24k 24k

12k 12k

48k

A

B

1 2

HR2

48k 48k

3 4

Pattern 6

• The maximum total capacity of indoor units is 56.4kW(192 kBtu/h).

• The maximum total capacity of a branch pipe of HR unit is 14.1kW(48 kBtu/h).

• Impossible installation : Head branch pipe HR unit

• Impossible installation : HR unit Head branch pipe Y and Head branch pipe.

HR1

B

A

12 345

Pipe connections between indoor and outdoor unit

36 Outdoor Unit

Pattern 7

Pattern 8

HR1

A

48k 48k

1 2

• * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h

• * : Maximum indoor units per a branch are 8 indoor units

HR2

48k 48k

3 4

HR3

48k 48k

5 6

*

HR1

48k 48k

1 2

HR2

*

B

12k 12k 12k 12k

3 4 5 6

24k724k

8

1

Indoor Unit Y Branch pipe

Outdoor

Unit

• Pipe installation from outdoor units to HR units : 3 pipes(Low pressure Gas pipe, High pressure Gas pipe, Liquid pipe)

• Pipe installation from HR units to indoor units : 2 pipes(Gas pipe, Liquid pipe)

Low pressure Gas pipe

High pressure Gas pipe

Liquid pipe

A

HR1

Gas pipe

Liquid pipe

Indoor

B

Unit

Head Branch pipe

Pipe connections between indoor and outdoor unit

Installation Manual 37

ENGLISH

1) Keep the 40m distance from the first branch to the farthest indoor.

Y branch

1) under 40m

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Keep the sum of indoor capacity under 56.4kW(192 kBtu/h).

1) under 40m

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Keep the sum of indoor capacity under 56.4kW(192 kBtu/h).

5m(16ft)

15m(49ft)

Pipe connections between indoor and outdoor unit

u Outdoor unit Connection

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(Low pressure gas pipe), Ø15.88(liquid pipe), Ø28.58(High Pressure liquid pipe)

2) Pipe diameter B after first branch according to 120% indoor unit combination(84kW) : Ø34.9(Low pressure gas pipe), Ø19.05(liquid pipe), Ø28.58(High Pressure liquid pipe) Therefore, pipe diameter B connected after first branch would be Ø34.9(Low pressure gas pipe), Ø15.88(liquid pipe), Ø28.58(High Pressure 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 (2.1kW) indoor unit at the 1st branch Main pipe diameter(22 HP outdoor unit): Ø28.58(Low pressure gas pipe), Ø15.88(Liquid pipe), Ø22.2(High pressure gas pipe) Pipe diameter between 1st and 2nd branch (71.7kW indoor units): Ø34.9(Gas pipe) Ø19.05(Liquid pipe) in conformity with downward indoor units. Since the main pipe diameter of 22HP outdoor unit is Ø28.58(Low pressure gas pipe), Ø15.88(Liquid pipe), Ø22.2(High pressure gas pipe) is used as the main pipe and the connection pipe between 1st and 2nd branch.

u Indoor Unit Connection

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

Indoor Unit capacity [kW(Btu/h)] Liquid pipe [mm(inch)] Gas pipe [mm(inch)]

≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) < 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8) < 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) ≤ 28.0(95,900) Ø9.52(3/8) Ø22.2(7/8)

38 Outdoor Unit

n Pipe connection between outdoor units

(General Case)

n Pipes between outdoor units are

2m or less

n Pipes between outdoor units are

2m or longer

n Examples of Wrong Pipe Connections



The maximum pipe length after the first branching between the outdoor units is 10m or less

2m or less

• If the distance between the outdoor units becomes more than 2m, apply Oil Traps between the gas pipes.

• If the outdoor unit is located lower than the main pipe, apply Oil Trap.

u Pipe Connection Method/Precautions for Series connections between Outdoor units

- Separate Y branch joints are needed for series connections between outdoor units.

- Please refer to the below connection examples to install pipe connections between outdoor units.

Installation Manual 39

Pipe connections between indoor and outdoor unit

ENGLISH

Oil Trap

2m or less

0.2m or more

2m or longer

Oil Trap Oil Trap

2m or less 2m or less

2m or longer2m or longer

If the main pipe is higher than the outdoor units, oil is accumulated in the outdoor unit.

If there are differences in the height between the outdoor units, oil is accumulated in the lower outdoor unit.

Oil Trap

Pipe connections between indoor and outdoor unit

• The pipes between the outdoor units must maintain horizontal levelness or give an inclination to prevent a back flow toward the slave outdoor unit. Otherwise, the unit may not operate properly.

• Apply Oil Trap as shown below when the length of the pipe between the outdoor units is more than 2m. Otherwise, the unit may not operate properly.

Toward indoor unit

Pipe inclination (2 or more)

Toward indoor unit

(Example 1)

(Example 2)

(Example 3)

(Example 1)

(Example 2)

Toward indoor unit

2m

0.2m Oil Trap

40 Outdoor Unit

• When connecting the pipes between the outdoor units, the accumulation of oil in the slave outdoor unit should be avoided. Otherwise, the unit may not operate properly.

Toward indoor unit

(Example 1)

(Example 2)

(Example 3)

h

0.2m

Toward indoor unit

Toward indoor unit Toward indoor unit

Oil Trap

Installation Manual 41

Pipe connections between indoor and outdoor unit

ENGLISH

Pipe connections between indoor and outdoor unit

u

The amount of Refrigerant

The calculation of the additional charge should take into account the length of pipe and CF(correction Factor) value of indoor unit.

CAUTION

Use only 2-series of indoor unit. Ex) ARNU***2

CF value of indoor unit (unit : kg)

Capacity(Btu/h(kW)) 5k 7k 9k 12k 15k 18k 24k 28k 36k 42k 48k 76k 96k Type (1.6) (2.2) (2.8) (3.6) (4.5) (5.6) (7.1) (8.2) (10.6) (12.3) (14.1) (22.4) (28.0) Ceiling Concealed Duct (Low Static) - 0.17 0.17 0.17 0.17 0.37 0.37 - - ---Ceiling Concealed Duct (High Static) - 0.26 0.26 0.26 0.26 0.26 0.26 0.44 0.44 0.44 0.62 1.00 1.00 Wall Mounted - 0.24 0.24 0.24 0.24 0.28 0.28 - - ---1Way Ceiling Cassette - 0.20 0.20 0.20 - 0.29 0.29 - - ---2Way Ceiling Cassette -----0.16 0.16 - - ---4Way Ceiling Cassette 0.18 0.18 0.25 0.25 0.32 0.32 0.48 0.48 0.64 0.64 0.64 - ARTCOOL Gallery - 0.10 0.10 0.10 --------Floor Standing - 0.17 0.17 0.17 0.17 0.37 0.37 - - ---Ceiling & Floor - - 0.10 0.10 --------Ceiling Suspended -----0.35 0.35 - 0.54 - 0.75 - Console - 0.17 0.17 0.17 0.17 -------Fresh Air Intake Unit - - - - - - - - - - 0.62 1.00 1.00 Heat recovery ventilator(DX) - - - 0.20 - 0.20 0.20 - - - - - -

42 Outdoor Unit

Additional

charge(kg)

Total liquid pipe

=

:Ø25.4 mm

Total liquid pipe

+

:Ø22.2 mm

Total liquid pipe

+

:Ø19.05 mm

Total liquid pipe

+

:Ø15.88 mm

Total liquid pipe

+

:Ø12.7 mm

Total liquid pipe

+

:Ø9.52 mm

Total liquid pipe

+

:Ø6.35 mm

Number of installed

+

HR units

CF value of

+

indoor unit

Ex) 16HP

Outdoor unit HR unit (1EA) Indoor unit

A: Ø12.7, 50m B: Ø9.52, 10m C: Ø9.52, 10m D: Ø9.52, 10m E: Ø6.35, 10m

Additional Charge = A x 0.118 + (B+C+D) x 0.061 + E x 0.022 + HR unit = 50 x 0.118 + 30 x 0.061 + 10 x 0.022 + 0.5(HR) = 8.45(kg)

WARNING

▶ Regulation for refrigerant leakage

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

p 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 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

Total amount of refrigerant in the system

≤ 0.44 ( kg / m3)

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

- Add exact amount of refrigerant calculated by the installation pipe diameter length and the indoor combination.

- If the refrigerant amount is not exact, it may not operate properly.

-

If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit performance may be caused.

Liquid pipe

Low Pressure Gas pipe

High Pressure Gas pipe

Ⓐ Manifold Gauge

Ⓑ Low pressure side Handle

Refrigerant Bottling

WARNING

- Pipe to be vacuumed : High Pressure Gas pipe, Low Pressure Gas pipes, Liquid pipe.

- If the refrigerant amount is not exact, it may not operate properly.

- If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit performance may be caused.

Installation Manual 43

Pipe connections between indoor and outdoor unit

ENGLISH

Pipe connections between indoor and outdoor unit

Branch pipe Fitting

A

B

Header

To outdoor unit To indoor unit

A B

• 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.

44 Outdoor Unit

Y branch

To Outdoor Unit

A

B

A

To Branch Piping or Indoor Unit

B

Horizontal plane

Within +/- 10

A

Viewed from point A in direction of arrow

Facing

downwards

Within 3 Within 3

Facing

upwards

Insulator

(included with kit)

Liquid and gas pipe joints

Tap e (field supply)

Insulator for field piping

C

• 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.

Horizontal plane

View from point B in the direction of the arrow

Installation Manual 45

Pipe connections between indoor and outdoor unit

ENGLISH

B

Pinched pipe

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

Insulator

Cap pipe

Tape

Insulator of field pipe

Insulator for cap pipe

Tape

Pipe connections between indoor and outdoor unit

u Y branch pipe

[unit:mm]

Models Low Pressure Gas Pipe High Pressure Gas PipeLiquid pipe

ARBLB01621

ARBLB03321

ARBLB07121

ARBLB14521

ARBLB23220

I.D19.05

O.D15.88

I.D12.7

I.D15.88

I.D12.7

I.D15.88

I.D12.7

292

281

74

70

I.D12.7

O.D9.52

I.D6.35

I.D9.52

I.D.9.52

I.D.6.35

I.D9.52

I.D.6.35

292

281

74

70

1

I.D15.88

I.D 9.52

I.D15.88

I.D12.7

I.D 9.52

I.D15.88

I.D 9.52

I.D12.7

372

351

74

I.D25.4

413

390

83

I.D15.88

I.D19.05

I.D12.7

I.D12.7I.D19.05I.D15.88I.D19.05

I.D22.2

I.D28.58

O.D25.4

I.D22.2

O.D19.05

I.D22.2

I.D25.4

70 80 110

1

2

3

3 1 2

I.D9.52

I.D12.7

53.6D.I25.9D.I

I.D9.52

I.D12.7

I.D6.35

I.D12.7

332

321

74

2

3 2

3

I.D25.4

I.D15.88I.D 19.05

O.D15.88 I.D12.7 I.D 9.52

110

444

421

96

I.D 22.2

I.D 19.05

I.D15.88

I.D 19.05

I.D 22.2I.D 22.2

O.D15.88

I.D12.7

70

376 404

96

I.D34.9

O.D31.8

I.D22.2

O.D22.2

I.D28.58

50.91D.O8.13D.I

I.D28.58

120 90 120

I.D31.8

2.22D.I85.82D.I

I.D19.05

I.D15.88

I.D12.7

I.D19.05

I.D15.88

2

3

1

2

1 3

25.9D.I25.9D.I7.21D.O

I.D15.88 I.D19.05

I.D12.7

I.D19.05

I.D15.88I.D12.7

I.D19.05

O.D12.7I.D6.35

I.D15.88

371 394

83

110 70

2

3

3 2

2

3

381 409

96

I.D28.58

2.22D.I4.52D.I

I.D25.4

I.D19.05

I.D22.2

I.D25.4

O.D19.05

I.D15.88 I.D12.7

110

O.D12.7

I.D9.52

70

O.D19.05

I.D15.88

70

471 517

125

120 130

I.D19.05

I.D15.88

O.D22.2

I.D12.7

I.D19.05

I.D22.2

I.D41.3 I.D38.1

I.D41.3

O.D34.9

I.D34.9

I.D22.2

I.D28.58

I.D28.58I.D38.1

I.D41.3

I.D34.9

I.D38.1

O.D38.1

O.D15.88

O.D28.58

90

70

120

2

3

2

3

471 517

125

120 130

I.D19.05

I.D15.88

O.D22.2

I.D12.7

I.D19.05

I.D22.2

I.D41.3 I.D38.1

I.D41.3

O.D34.9

I.D34.9

I.D22.2

I.D28.58

I.D28.58I.D38.1

I.D41.3

I.D34.9

I.D38.1

O.D38.1

O.D15.88

O.D28.58

90

70

120

2

3

2

3

416 444

96

O.D15.88 I.D9.52

I.D12.7

O.D12.7 I.D6.35

I.D9.52

I.D15.88 I.D19.05

I.D22.2

I.D19.05

I.D15.88

I.D12.7

I.D15.88

I.D19.05

I.D22.2

O.D19.05

80

110 110

2

3

1

2 3 3

3

1

2

O.D25.4 I.D22.2 I.D19.05

120

O.D12.7

I.D9.52

70

O.D19.05 I.D15.88 I.D12.7

110

O.D25.4

I.D22.2

80

453 491

111

I.D28.58

I.D34.9

I.D28.58

I.D31.8

I.D25.4

I.D31.8

I.D25.4

I.D28.58

I.D31.8

O.D.19.05 I.D.12.7

I.D.15.88

O.D12.7 I.D6.35

I.D9.52

X2

110 110

I.D25.4 I.D22.2

I.D.19.05

I.D.19.05I.D.22.2

I.D.25.4

I.D.22.2

346 379

96

2

3 32

3

O.D.28.58

I.D.22.2

115

X2

100

O.D15.88

I.D12.7

70

O.D.22.2

I.D.15.88I.D.19.05

120

O.D.38.1

I.D.34.9

I.D.28.58 O.D.44.48

X2

175

I.D31.8

I.D.53.98

I.D.25.4

I.D.44.48

I.D38.1I.D41.3

I.D.44.48

I.D38.1I.D41.3

I.D.53.98

420 490

134

1

2

3

2

3

2

3

46 Outdoor Unit

u Header branch pipe

[unit:mm]

4 branch

ARBL054

7 branch

ARBL057

4 branch

ARBL104

7 branch

ARBL107

10 branch

ARBL1010

10 branch

ARBL2010

Models Gas pipe Liquid pipe

120

150

360

540

120

ID15.88

ID12.7

ID15.88

ID19.05

120

150

360

ID9.52

ID6.35

ID9.52

ID12.7

120

150

400

160

ID15.88

ID12.7

ID19.05

ID15.88

ID22.2

ID28.58 ID25.4

120

150

360

ID9.52

ID6.35

ID9.52

ID12.7

120

150

120

ID15.88

ID12.7

ID15.88

ID12.7

ID15.88

ID19.05

120

150

120

ID6.35

ID9.52

ID12.7

120

150

160

580

ID19.05

ID15.88

ID12.7

ID22.2ID28.58 ID25.4

120

150

700

120

ID6.35

ID9.52

ID6.35

ID9.52ID12.7

120

150

160

760

ID19.05

ID15.88

ID12.7

ID22.2ID28.58 ID25.4

120

150

120

720

ID6.35

ID9.52

ID6.35

ID12.7

ID9.52

120

150

107

60*9=540

700

ID6.35

ID9.52

ID19.05ID15.88

ID9.52

ID6.35

120

150

182

775

ID19.05

ID15.88

ID12.7

ID28.58

ID31.8 ID34.9

Installation Manual 47

Pipe connections between indoor and outdoor unit

ENGLISH

Pipe connections between indoor and outdoor unit

Leak Test and Vacuum drying

(1) Leak test

Leak test should be m

ade by pressurizing nitrogen gas to 3.8 MPa(38.7kgf/cm2). 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, Low Pressure Gas pipes, High Pressure Gas 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 0.1 kg/cm

2

(0.01 MPa) for each 1°C 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) is 27 °C

24 hour later: 3.73 MPa, 20°C 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.

48 Outdoor Unit

Nitrogen gas cylinder

Slave 1 outdoor unit Master outdoor unit

Close

Nitrogen gas cylinder

Gas pipe

High Pressure

Liquide pipe

Low Pressure

Gas pipe

High Pressure

Liquide pipe

Gas pipe

Low Pressure

HR unit

Liquid side

Gas side

Indoor unit

(2) Vacuum

Vacuum drying should be made from the service port provided on the outdoor unitʼs service valve to the vacuum pump commonly used for Liquid pipe, Low Pressure Gas pipes, High Pressure Gas pipe. (Make Vacuum from Liquid pipe, Low Pressure Gas pipes, High Pressure Gas pipe with the service valve closed.) * Never perform air purging using refrigerant.

• Vacuum drying: Use a vacuum pump that can evacuate to -100.7kPa (5 Torr, -755mmHg).

1. Evacuate the system from the liquid and gas pipes with a vacuum pump for over 2 hrs and bring the system to -100.7kPa. 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 0.05MPa(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 -100.7kPa 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.)

Installation Manual 49

Pipe connections between indoor and outdoor unit

ENGLISH

Slave 1 outdoor unit Master outdoor unit

Vacuum pump

Close

Gas pipe

High Pressure

Close

Liquide pipe

Gas pipe

Low Pressure

Close

Gas pipe

High Pressure

Close

Liquide pipe

Gas pipe

Low Pressure

HR unit

Liquid side

Indoor unit

Scale Use a graviometer. (One that can measure down to 0.1kg). If you are unable to prepare such a high-precision gravimeter you may use a charge cylinder.

Gas side

Pipe connections between indoor and outdoor unit

Vacuum Mode

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

Master unit PCB DIP switch on Switch on : 10, 12, 13

Vacuum mode setting

ODU valve open,

Main EEV, SC EEV open

IDU EEV open

HR unit valve open, SC EEV open

ODU power reset

Press the black button Main PCB (5 sec.)

Vacuum mode setting method Vacuum mode cancellation method

Master unit PCB DIP switch off Switch off : 10, 12, 13

Power reset

Vacuum mode cancellation

CAUTION

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

50 Outdoor Unit

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 shall 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

Bad example

Good example

These parts are not insulated.

B A C

A B C

A

C

D

E

A B C D E

Transmission lines

F

Liquid pipe

Transmission lines

Separation

Gas pipe Power lines Insulating material

A B C D E

A

B

F

Heat insulation material Pipe Outer covering

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

Power lines

E

D

B

A

C

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.

Installation Manual 51

Pipe connections between indoor and outdoor unit

ENGLISH

Penetrations

Inner wall (concealed)

A

Floor (fireproofing)

D

B

Outer wall Outer wall (exposed)

D

C

B

Roof pipe shaft

G

F

G

B

A

Penetrating portion on fire

limit and boundary wall

D

B

H

I

A

E

B

I

J

1m1m

Sleeve 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.)

Electrical Wiring

Caution

CAUTION

Be sure to correct the outdoor unit to earth. Do not connect earth line to any gas Liquid pipe, Low Pressure Gas pipes, High Pressure Gas 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.

2-Core Shield Cable Multi-Core Cable

52 Outdoor Unit

Outdoor Unit

Indoor

Unit

Indoor

Unit

Remote control

Indoor

Unit

Indoor

Unit

Remote control

Outdoor Unit

Indoor

Unit

Indoor

Unit

Remote control

Indoor

Unit

Indoor

Unit

Remote control

CAUTION

• Use the 2-core shield cables for transmission 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 deterio-

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

• Make sure that the power unbalance ratio is not greater than 2%. If it is greater the units lifespan

will be reduced.

Installation Manual 53

Electrical Wiring

ENGLISH

When none are available, follow the instructions below.

• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring may cause abnormal heat.)

• When connecting wiring which is the same thickness, do as shown in the figure below.

• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure being exerted on the terminal block.

• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will strip the head and make proper tighterning impossible.

• Over-tightening the terminal screws may break them.

u Precautions when laying power wiring

Round pressure terminal

Power wire

Use round pressure terminals for connections to the power terminal block.

CAUTION

When the 400 volt power supply is applied to “N” phase by mistake, replace inverter PCB and transformer in control box.

Outdoor Unit

Master Slave1 Slave2

Outdoor Unit

Master Slave1 Slave2

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

Remote controller

Outdoor Unit

Master Slave1 Slave2

Outdoor Unit

Master Slave1 Slave2

Indoor

Unit

Indoor

Unit

Remote controller

Indoor

Unit

Indoor

Unit

2-Core Shield Cable Multi-Core Cable

Remote controller

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 transmission line between master and slave outdoor unit through the terminal block.

- Connect transmission 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 transmission 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.

n Heat Recovery

54 Outdoor Unit

Front Panel

UX2UX3

Main PCB

SUB PCB Reactor

Inverter fan PCB Noise filter

Bridge diode

Magnet switch

Inverter PCB

Take care of the phase sequence of 3-phase 4-wire power system

SUB PCB

Main PCB Reactor

Inverter fan PCB Noise filter

Bridge diode

Magnet switch

Inverter PCB

Take care of the phase sequence of 3-phase 4-wire power system

Transmission and Power Lines

1) Transmission cable

• Types : shielding wire

• Cross section : 1.0~1.5mm

2

• Maximum allowable temperature: 60°C

• Maximum allowable line length: under 1000m

2) Remote control cable

• Types : 3-core cable

3) Central control cable

4) Separation of transmission and power lines

• If transmission 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 transmission 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. For length in excess of 100m

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

50A 500mm

100A 1000mm

Exceed 100A 1500mm

100V or more

CAUTION

n 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.

Product type Wire type Diameter

ACP&AC Manager (2-shielding wire,2-core wire) 1.0~1.5mm

2

AC Smart (2-shielding wire,2-core wire) 1.0~1.5mm

2

Simple central controller (2-shielding wire,2-core wire) 1.0~1.5mm

2

Installation Manual 55

Electrical Wiring

ENGLISH

Electrical Wiring

Wiring of main power supply and equipment capacity

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.

56 Outdoor Unit

Field Wiring

1. 50Hz

u Example Connection of Communication Cable

n 1 Outdoor Unit-3Ø, 380-415V

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.

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Outdoor Unit]

[Indoor Units]

Power supply

3 Phase 4 Wires

50Hz 380-415V

Power supply 1 Phase 50Hz

220-240V

(Main Switch)

Pull Box (Installer option)

HR unit

The GND terminal at the main PCB is a ‘-’ terminal for Dry contact, it is not the point to make ground connection.

Between Indoor and Master Outdoor unit

Master Outdoor Unit

SODU B SODU A IDU B IDU A INT B INT A

HR unit

3434 34 3434

Installation Manual 57

Electrical Wiring

ENGLISH

Electrical Wiring

n 2 Outdoor Units-3Ø, 380-415V

58 Outdoor Unit

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

Power supply

3 Phase 4 Wires

50Hz 380-415V

(Main Switch)

Power supply

1 Phase 50Hz

220-240V

N

L

Pull Box (Installer option)

Power Line

(2 Wires Cable)

■ When the power source is supplied to

Each outdoor unit individually.

Power supply

3 Phase 4 Wires

50Hz 380-415V

(Main Switch)

Power supply

1 Phase 50Hz

220-240V

N

L

Switch

Fuse

(4 Wires Cable)

Power Line

(2 Wires Cable)

HR unit

Switch

Fuse

Power Line

(2 Wires Cable)

R S T N

Power Line

Pull Box (Installer option)

Power Line

(2 Wires Cable)

R S T N

(4 Wires Cable)

Pull Box (Installer option)

Power Line

Switch

Fuse

R S T N

[Master]

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Pull Box (Installer option)

[Slave]

Pull Box (Installer option)

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

[Master]

Pull Box (Installer option)

Communication Line

Power Line

[Slave]

(2 Wires Cable)

Communication Line

(2 Wires Cable)

Pull Box (Installer option)

Power Line

(2 Wires Cable)

HR unit

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

Power Line

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.

Installation Manual 59

Electrical Wiring

ENGLISH

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave Outdoor Unit

Electrical Wiring

n 3 Outdoor Units-3Ø, 380-415V

60 Outdoor Unit

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

Power supply

3 Phase 4 Wires

50Hz 380-415V

(Main Switch)

Power supply

1 Phase 50Hz

220-240V

N

L

Pull Box (Installer option)

Power Line

(2 Wires Cable)

■ When the power source is supplied to Each outdoor unit individually.

Power supply

3 Phase 4 Wires

50Hz 380-415V

(Main Switch)

Power supply

1 Phase 50Hz

220-240V

N

L

Switch

Fuse

(4 Wires Cable)

Power Line

(2 Wires Cable)

HR unit

Switch

Fuse

Power Line

(2 Wires Cable)

(4 Wires Cable)

R S T N

Power Line

Pull Box (Installer option)

Power Line

(2 Wires Cable)

R S T N

Power Line

Pull Box (Installer option)

Switch

Fuse

R S T N

[Master]

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Switch

Pull Box (Installer option)

[Slave1] [Slave2]

Communication Line

(3 Wires Cable)

[Indoor Units]

R S T N

Fuse

Pull Box (Installer option)

Power Line

(2 Wires Cable)

[Master]

Pull Box (Installer option)

Communication Line

(2 Wires Cable)

[Slave1] [Slave2]

Pull Box (Installer option)

Communication Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

HR unit

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

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.

Installation Manual 61

Electrical Wiring

ENGLISH

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave1 Outdoor Unit

Slave2 Outdoor Unit

Electrical Wiring

n 4 Outdoor Units - 3Ø, 380-415V

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

n When the power source is supplied to Each outdoor unit individually.

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Master]

[Indoor Units]

Power supply

3 Phase 4 Wires

50Hz 380-415V

Power supply 1 Phase 50Hz

220-240V

(Main Switch)

[Slave1] [Slave2] [Slave3]

Pull Box (Installer option)

HR unit

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Master]

[Indoor Units]

Power supply

3 Phase 4 Wires

50Hz 380-415V

Power supply 1 Phase 50Hz

220-240V

(Main Switch)

[Slave1] [Slave2] [Slave3]

R S T N

Switch

Fuse

R S T N

Switch

Fuse

R S T N

Switch

Fuse

Pull Box (Installer option)

HR unit

WARNING

When the total capacity is over than as follow, the power source do not use in series between the units. The First terminal block could be burnt out.

62 Outdoor Unit

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.

Installation Manual 63

Electrical Wiring

ENGLISH

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave1 Outdoor Unit

Slave2 Outdoor Unit

Slave3 Outdoor Unit

Electrical Wiring

2. 60Hz

u Example Connection of Communication Cable

n 1 Outdoor Unit - 3Ø, 380V

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Outdoor Unit]

[Indoor Units]

Power supply

3 Phase 4 Wires

60Hz 380V

Power supply

1 Phase 60Hz

220V

(Main Switch)

Pull Box (Installer option)

HR unit

The GND terminal at the main PCB is a ‘-’ terminal for Dry contact, it is not the point to make

Between Indoor and Master Outdoor unit

Master Outdoor Unit

SODU B SODU A IDU B IDU A INT B INT A

HR unit

3434 34 3434

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 prod-

uct is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase may break the compressor and other parts.

64 Outdoor Unit

n 2 Outdoor Units - 3Ø, 380V

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

n When the power source is supplied to Each outdoor unit individually.

Installation Manual 65

Electrical Wiring

ENGLISH

Power supply

3 Phase 4 Wires

60Hz 380V

(Main Switch)

Power supply

1 Phase 60Hz

220V

N

L

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Power supply

3 Phase 4 Wires

60Hz 380V

(Main Switch)

Power supply

1 Phase 60Hz

220V

N

L

Switch

Fuse

Power Line

(2 Wires Cable)

HR unit

Switch

Fuse

Power Line

(2 Wires Cable)

R S T N

Power Line

(4 Wires Cable)

Pull Box (Installer option)

Power Line

(2 Wires Cable)

R S T N

Power Line

(4 Wires Cable)

Pull Box (Installer option)

Switch

R S T N

Fuse

[Master]

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Pull Box (Installer option)

[Slave]

Pull Box (Installer option)

Communication Line

(3 Wires Cable)

[Indoor Units]

[Master]

Pull Box (Installer option)

Communication Line

Power Line

(2 Wires Cable)

[Slave]

(2 Wires Cable)

Communication Line

(2 Wires Cable)

Pull Box (Installer option)

Power Line

(2 Wires Cable)

HR unit

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

Electrical Wiring

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.

66 Outdoor Unit

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave Outdoor Unit

n 3 Outdoor Units - 3Ø, 380V

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

n When the power source is supplied to Each outdoor unit individually.

Installation Manual 67

Electrical Wiring

ENGLISH

Power supply

3 Phase 4 Wires

60Hz 380V

(Main Switch)

Power supply 1 Phase 60Hz

220V

N

L

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Switch

Fuse

(4 Wires Cable)

Power Line

(2 Wires Cable)

HR unit

R S T N

Power Line

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Power supply

3 Phase 4 Wires

60Hz 380V

(Main Switch)

Power supply 1 Phase 60Hz

220V

N

L

Switch

Fuse

Power Line

(2 Wires Cable)

(4 Wires Cable)

R S T N

Power Line

Pull Box (Installer option)

Switch

Fuse

R S T N

[Master]

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Switch

Pull Box (Installer option)

Fuse

[Slave1] [Slave2]

Pull Box (Installer option)

Power Line

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

R S T N

Pull Box (Installer option)

[Master]

Communication Line

(2 Wires Cable)

[Slave1] [Slave2]

Pull Box (Installer option)

Communication Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

HR unit

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Communication Line

(3 Wires Cable)

[Indoor Units]

Electrical Wiring

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.

68 Outdoor Unit

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave1 Outdoor Unit

Slave2 Outdoor Unit

n 4 Outdoor Units - 3Ø, 380V

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

n When the power source is supplied to Each outdoor unit individually.

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Master]

[Indoor Units]

Power supply

3 Phase 4 Wires

60Hz 380V

Power supply 1 Phase 60Hz

220V

(Main Switch)

[Slave1] [Slave2] [Slave3]

Pull Box (Installer option)

HR unit

R S T N

Switch

Fuse

L

N

Communication Line

(2 Wires Cable)

Power Line

(4 Wires Cable)

Communication Line

(3 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

Power Line

(2 Wires Cable)

[Master]

[Indoor Units]

Power supply

3 Phase 4 Wires

60Hz 380V

Power supply 1 Phase 60Hz

220V

(Main Switch)

[Slave1] [Slave2] [Slave3]

R S T N

Switch

Fuse

R S T N

Switch

Fuse

R S T N

Switch

Fuse

Pull Box (Installer option)

HR unit

WARNING

When the total capacity is over than as follow, the power source do not use in series between the units. The First terminal block could be burnt out.

Installation Manual 69

Electrical Wiring

ENGLISH

Electrical Wiring

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.

70 Outdoor Unit

Between Indoor and Master Outdoor unit

SODU B SODU A IDU B IDU A INT B INT A

Master Outdoor Unit

HR unit

SODU B SODU A IDU B IDU A INT B INT A

The GND terminal at the main PCB is a ‘-’ terminal for dry contact. It is not the point to make ground connection.

• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)

3434 34 3434

Master Outdoor Unit

Slave1 Outdoor Unit

Slave2 Outdoor Unit

Slave3 Outdoor Unit

u Example Connection of Communication Cable

[BUS type]

• Connection of communication cable must be installed like below figure between indoor unit to outdoor unit.

[STAR type]

• Abnormal operation can be caused by communication defect, when connection of communication cable is installed like below figure(STAR type).

HR unit HR unit

Installation Manual 71

Electrical Wiring

ENGLISH

Electrical Wiring

u UX2 Chassis Wire Connection

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Power/Ground lines

Over 50mm Gap

Communication line

Left Side

Ground Cable

Communication line

Power/Ground lines

Over 50mm Gap

Main Power Terminal Block

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Right Side

Ground Cable

Communication line

Power/Ground lines

Over

50mm Gap

Main Power Terminal Block

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Front Side 1

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Insulation sleeves attachments

Fix firmly not to be displaced

ODU-ODU Communication line

Ground CableGround CableGround Cable

ODU-IDU Communication line

ODU-ODU

Communication lineCommunication line

ODU-ODU Communication line

Communication line

Power/Ground lines

Over 50mm Gap

Main Power

Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Front Side 2

Main PCB ConnectionMain Power Connection

72 Outdoor Unit

u UX3 Chassis Wire Connection

႖ဴఎၴఝ႖ဴఎၴఝ

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Power/Ground lines

Over 50mm Gap

Communication line

Left Side

႖ဴఎၴఝ

Main Power Terminal Block

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Power/Ground lines

Over 50mm Gap

Communication line

Right Side

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Power/Ground lines

Over

50mm Gap

Communication line

Front Side 1

:;<6

Insulation sleeves attachments

Ground Cable

Fix firmly not to be displaced

Main Power Terminal Block

Main Power Terminal BlockMain Power Terminal Block

ODU-ODU Communication line

ODU-ODUODU-ODU Communication lineCommunication line

ODU-ODU Communication line

ODU-IDU Communication line

Main Power Terminal Block

Main Power Main Power Terminal BlockTerminal Block

Main Power Terminal Block

Ground Cable

Power/Ground lines

Over 50mm Gap

Communication line

Front Side 2

Main PCB ConnectionMain Power Connection

Installation Manual 73

Electrical Wiring

ENGLISH

Electrical Wiring

Location of setting dip switch

n SUB PCB

74 Outdoor Unit

DIP-SW01 DIP-SW02

7 - Segment

SW03B (DATA CONFIRM)

SW02B (AUTO ADDRESS)

DIP switch setting

CAUTION

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

Installation Manual 75

Electrical Wiring

ENGLISH

n Checking according to dip switch setting

1. You can check the setting values of the Master 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

n 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 R410A 30HP) Master model code ‘ Slave1 model code ‘ Slave2 model code ‘ total capacity ‘ 2 ‘ 25 ‘ 180

1 ~255 : Master model code 1 ~255 : Slave1 model code 1 ~255 : Slave2 model code 1 ~255 : Slave3 model code

8~80HP : HP number(sum of master capacity and slave capacity) No display : cooling only 2 : heat pump / heat recovery 25 : normal 180 : Model Type (ARUB***LT3)

Example) 30Hp, R410A

194 ’ 193 ’ 30 ’ 2 ’ 25 ’ 180

}

Refer to table code

Model Code

Model Code Unit (HP) Unit Ref. 190 8 191 10 192 12 193 14 194 16 195 18 196 20

Master &

Slave

R410A

Electrical Wiring

n Setting the DIP switch

• If you set the Dip switch when power is on, the changed setting will not be applied immediately.

The changed setting will be enabled only when Power is reset or by pressing Reset button.

CAUTION

1. ʻXʼ mark within the table means that the dip switch must be pulled down. If not, the function may not work properly.

2. If the applicable dip switch is not set properly, the product may not work properly.

3. When executing the test operation, check the operating condition of the indoor unit and only execute the operation when all indoor units are stopped.

4. Auto test operation function does not work for the product where only one indoor unit is connected for use.

76 Outdoor Unit

Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

●

● ● ●

●

ⅹ

●

ⅹ

● ●

ⅹ

●

ⅹ ⅹ

ⅹ

●

ⅹ

● ●

ⅹ

●

ⅹ

●

ⅹ ⅹ

● ●

ⅹ

●

ⅹ

●

● ● ●

●

ⅹ●ⅹ

ⅹ ⅹ ⅹ ⅹ ⅹ ⅹ

●

ⅹ

●

ⅹ ⅹ ⅹ ⅹ

●

ⅹ ⅹ

●

ⅹ ⅹ ⅹ

●

ⅹ

● ●

ⅹ ⅹ ⅹ

●

ⅹ

● ●

ⅹ

● ●ⅹ●

● ● ● ●

● ●ⅹ●

ⅹ ⅹ

● ●

ⅹ

● ● ●

●ⅹ● ●

● ●

● ● ●

●

ⅹ

● ●

ⅹ ⅹ

●

ⅹ

●

● ●

Function

ODU

setting

Inverter backup Const. 1 backup Const. 2 backup Unità backup Night low noise operation(cooling, heating) Night low noise operation(cooling only) Snow removal function Forced defrost Snow removal + Forced defrost Non-operation indoor unità EEV adjustment Indoor unità target subcooling/overheating adjustment Operation indoor unità EEV adjustment Real-time sensor monitoring Only overall defrost Static pressure mode Pump out Pump down Vacuum mode Forced oil return operation 4way valve manual operation-upper, low OFF 4way valve manual operation-upper ON, low OFF 4way valve manual operation-upper OFF, low ON 4way valve manual operation-upper, low ON Auto pipe detection mode 1 Auto pipe detection mode 2 Indoor unità pipe display No. Indoor unitààs connected a branch of HR Unità Auto charging Refrigerant Checking Function Intergrated test operation function (Heating) Intergrated test operation function (Cooling) Heating Capacity up IDU Fan RPM Control ODU Address setting Master unità Slave1 unità Slave2 unità Slave3 unità

HR Unit PCB

Switch for setup of HR Unit

1. Main function of SW02M

1) Selection of the method for addressing valves of an HR unit (Auto/Manual)

Auto Manual

SW02M (Dip switch for setup of the function of HR unit)

SW03M SW04M

SW01M/SW03M/SW04M (Switch for manual valve addressing)

SW01M

SW05M (Switch for addressing HR unit)

7-SEG

#1 valve housing

#1 cooling valve LED(green)

#1 heating valve LED(red)

#4 valve housing

Switch No.1 OnSwitch No.1 Off

ON S/W

Selection

No.1

Method for addressing valves of an HR unit (Auto/Manual)

No.2

Model of HR unit

No.3

Model of HR unit

No.4

Model of HR unit

No.5

Valve group setting

No.6

Valve group setting

No.7

Use only in factory production (preset to “OFF”)

Zoning setting (“ON”)

No.8

Use only in factory production (preset to “OFF”)

SW02M

Installation Manual 77

HR Unit PCB

ENGLISH

2) Setting the zoning control

DIP S/W setting

Normal

control

Zoning control

SW01M

Turn the dip switch of the zoning branch on. Ex) Branch 1,2 are zoning control.

HR Unit PCB

78 Outdoor Unit

3) Selection of the model of the HR unit

h Each model is shipped with the switches No.2 and No.3 pre-adjusted as above in the factory.

WARNING

• If you want to use a PRHR031 for 2 branches HR unit after closing the 3rd pipes, set the dip switch for 2 branches HR unit.

• If you want to use a PRHR041 for 3 branches HR unit after closing the 4th pipes, set the dip switch for 3 branches HR unit.

•

If you want to use a PRHR041 for 2 branches HR unit after closing the 3rd and 4th pipes, set the dip switch for 2 branches HR unit.

• The unused port must be closed with a copper cap, not with a plastic cap.

(For 2 branches)

PRHR021

(For 3 branches)

PRHR031

(For 4 branches)

PRHR041

Initial

Setting

1 branches Connected

2 branches Connected

3 branches Connected

4 branches Connected

1

4

2

3

2

1

3

2

1

] Y branch pipe

4) Setting the Valve Group.

[Unit:mm]

Note:

If the large capacity indoor units are installed, below Y branch pipe should be used

Installation Manual 79

HR Unit PCB

ENGLISH

DIP S/W setting

Example

Not control

No.1, 2 Valve

Control

No.2, 3 Valve

Control

No.3, 4 Valve

Control

No.1, 2 Valve

/

No.3, 4 Valve

Control

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

4

3

2

1

Indoor Unit Indoor Unit Indoor Unit Indoor Unit

Indoor Unit Indoor Unit Large capacity indoor unit

Indoor Unit Large capacity indoor unit Indoor Unit

Large capacity indoor unit Indoor Unit Indoor Unit

Large capacity indoor unit Large capacity indoor unit

Models Gas Pipe Liquid pipe

ARBLB03321

I.D22.2

I.D25.4

1

390 413

I.D28.58

I.D22.2

O.D19.05

3 1 2

70 80 110

O.D25.4

I.D15.88

O.D19.05

I.D19.05

I.D22.2

I.D12.7I.D19.05I.D15.88I.D19.05 2

I.D12.7

3

I.D25.4

83

I.D12.7

I.D9.52

I.D12.7

I.D9.52

321 332

I.D12.7

I.D6.35

53.6D.I25.9D.I

74

HR Unit PCB

2. SW05M (Rotary S/W for addressing HR unit)

Must be set to '0' when installing only one HR unit. When installing multiple HR units, address the HR units with sequentially increasing numbers starting from '0'.

Ex) Installation of 3 HR units

3. SW01M/SW03M/SW04M (Dip S/W and tact S/W for manual valve addressing)

1) Normal setting (Non-Zoning setting)

- Set the address of the valve of the HR unit to the central control address of the connected indoor unit.

- SW01M: selection of the valve to address SW03M: increase in the digit of 10 of valve address SW04M: increase in the last digit of valve address

- Prerequisite for manual valve addressing : central control address of each indoor unit must be preset differently at its wired remote control.

S/W No. Setup

No.1 Manual addressing of valve #1

No.2 Manual addressing of valve #2

No.3 Manual addressing of valve #3

No.4 Manual addressing of valve #4

SW03M Increase in the digit of 10 of valve address

SW04M Increase in the last digit of valve address

SW01M

SW03M

SW04M

80 Outdoor Unit

AB AB AB

4

3

2

1

4

3

2

1

3

2

1

4

2) Zoning setting

- Set the address of the valve of the HR unit to the central control address of the connected indoor unit.

- SW01M : selection of the valve to address SW03M : increase in the digit of 10 of valve address SW04M : increase in the last digit of valve address SW05M :Rotary S/W

- Prerequisite for manual valve addressing : central control address of each indoor unit must be preset differently at its wired remote control.

S/W No. Setup

No.1 Manual addressing of valve #1

No.2 Manual addressing of valve #2

No.3 Manual addressing of valve #3

No.4 Manual addressing of valve #4

SW03M Increase in the digit of 10 of valve address

SW04M Increase in the last digit of valve address

SW05M Manual addressing of zoning indoor units

SW01M

SW03M

SW04M SW05M

0

Installation Manual 81

HR Unit PCB

ENGLISH

HR Unit PCB

Auto addressing for indoor units and HR units

82 Outdoor Unit

n SUB PCB

1) Auto addressing for indoor unit

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

1) Wait for 3 minutes after applying power supply

(Master and Slave Outdoor unit, Indoor unit).

2) Press the switch of the outdoor unit for

5~10seconds until display 88.(SW02B).

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 inddor unit connection set whose

addressing is completed are indicated for 30seconds on 7-segment LED of the oudoor 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).

1) Auto addressing for indoor unit

2) Auto pipe detection

3) Manual pipe detection(Execute in case of Auto pipe detection failure)

• Turn off all the indoor units before auto addressing. If indoor unit is operated, auto addressing would not be completed.

2) Auto pipe detection

1) Turn No.1 of SW02M of HR unit PCB off.

2) Confirm that the setting of No.2, 3 of SW02M corresponds with the number of indoor units.

3) Reset the power of HR unit PCB

4) Turn on the No. 17 DIP S/W of main unit PCB when outdoor temperature is below 15°C Turn on the No. 14, 17 DIP S/W of main unit PCB when outdoor temperature is over 15°C

5) Reset the power of outdoor unit.

6) Wait for 3 minutes.

7) Press SW03B of the outdoor unit main PCB for 5 Seconds.

8) The number of connected HR unit is displayed. Ex) In case of installing four HR units : 04

9) Operated after 88 is displayed on 7-SEG of the outdoor unit main PCB.

CAUTION

• In replacement of the indoor unit PCB, always perform Auto addressing setting again

(At that time, please check about using Independent power module to any

indoor unit.)

• If power supply is not applied to the indoor unit, operation error occur.

• Auto addressing is only possible on the master Unit.

• Auto addressing has to be performed after 3 minutes to improve communication.

DIP-SW01 DIP-SW02

7 - Segment

SW03B (DATA CONFIRM)

SW02B (AUTO ADDRESS)

Installation Manual 83

HR Unit PCB

ENGLISH

3) Manual pipe detection

1) Enter the central control address into each indoor unit using its wired remote control.

2) Turn No.1 of SW02M of HR unit PCB on.

3) Reset the power of HR unit PCB.

4) On the HR unit PCB, manually set address of each valve of the HR unit to the central control address of the indoor unit connected to the valve.

5) Reset the power of outdoor unit PCB.

6) The number of the indoor unit installed is displayed after about 5 minutes. Ex) HR ‡ The number of the indoor

7) Reset the power of outdoor unit PCB, HR unit.

8) Manual pipe detection is completed

WARNING

1. In case that central controller is not installed, remain the address data after installer sets central control address as he wants

2. In case that central controller is installed, there would be central control address in wired remote control of indoor unit.

3.

In this case, set the HR unit manual pipe address according to central control address of indoor unit.

4. Pipe which is not connected with indoor unit should be set different address with pipe Connected with indoor unit. (If addresses are piled up, corresponding valve is not working.

5. If you want to change the setting of manual pipe, you should do it on HR unit PCB.

6. If an error occurred, it means that manual pipe setting is not completed.

7. During 5 minutes after pipe detection is completed, do not turn off the main unit PCB to save the result of pipe detection automatically.

WARNING

1. Execute auto addressing and auto pipe detection again whenever the indoor PCB and HR unit PCB is replaced.

• Operation error occurs unless power is applied to the indoor and HR units.

2.

Error No.200 occurs if the number of connected indoor units and that of scanned indoor units are different.

3. When auto pipe detection fails, complete it with manual pipe detection (see Manual pipe detection).

4.

When auto pipe detection addressing is completed normally, manual pipe detection is not required.

5. If you want to do auto pipe detection again after auto pipe detection fails, do after reset of outdoor unit by all means.

6. During 5 minutes after pipe detection is completed, do not turn off the main unit PCB to save the result of pipe detection automatically.

10) Pipe detection proceed.

11) 5~30 minutes are required depending on the number of the indoor units and outdoor temperature.

12) The number of the indoor units installed is displayed on 7-SEG of the outdoor unit main PCB for about 1 minute

• For a HR unit, the number of the indoor units connected to each HR unit is displayed.

•

'200' is displayed in case of auto pipe detection error, and auto detection is completed after '88' is disappeared.

h Auto pipe detection function : the function that sets connection relationship automatically between the

indoor unit and HR unit.

HR Unit PCB

Flow chart of auto-addressing for indoor units

84 Outdoor Unit

Power On

Waiting 3 minutes

Press RED Button for

10~15sec. (SW02B)

7-segment LED = 88

Don’t press RED Button

(H/P : SW0B, C/O : SW02V)

The number of the indoor

units connected is

displayed at 7-SEG of the

outdoor unit main PCB

after 2~7 minutes

The number of HR units

connected is displayed

at 7-SEG of the outdoor

unit main PCB

7-segment LED

= 88

YES

OK

NO Check the connections

Auto addressing start

• 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

of transmission line

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.

Flow chart of auto addressing for pipe detection

Installation Manual 85

HR Unit PCB

ENGLISH

Confirmation of indoor unit address setting

Turn No.1 of SW02M of HR unit PCB off.

Confirm that the setting of No.2, 3 of SW02M corresponds with the number of indoor units.

Reset the power of HR unit PCB

Confirm the DIP S/W of DIP-SW01,02 of outdoor PCB Outdoor temperature is below 15°C : 17 ON Outdoor temperature is over 15°C : 14, 17 ON

In case of changing DIP-SW01,02 S/W of outdoor unit, reset the power of outdoor unit main PCB

Wait for 3 minutes

Press SW03B of the outdoor unit main PCB for 5 seconds

Outdoor unit is operated for 5~60 minues.

Is the pipe

setting condition

satisfied during the operation of

indoor unit?

YES

The number of indoor units detected is displayed for 30 seconds on the outdoor unit PCB after outdoor unit stopped

Are the number

of indoor units connected to the

outdoor unit wiring and displayed

one equal?

YES

Completion of auto pipe detection

NO

Display error on outdoor unit PCB Display error on HR unit PCB

Outdoor unit PCB : HR ‡ HR unit number ‡ Valve number HR unit : '200'

Check the HR unit and indoor unit

Pipe detection error occur after 30 seconds.

Check the installation of pipe of outdoor, indoor, HR unit

88' is displayed on 7-SEG of the outdoor unit main PCB

❇ It is possible to be generated mode changing noise of

heating and cooling which is normal. There is no mode changing noise at normal operation.

Retry auto pipe detection after checking trouble

Incompletion of auto pipe detection

HR Unit PCB

Flow chart of manual addressing for pipe detection

86 Outdoor Unit

Execute in case of Auto pipe detection failure

Wait for about 5 minutes.

Turn No.1 of SW02M of HR unit PCB on.

The number of the indoor units installed is

Reset the power of HR unit PCB.

Enter the central control address into each indoor unit using its wired remote control.

On the HR unit PCB, manually set address of each valve of the HR unit to the central control address of the indoor unit connected to the valve.

Reset the power of outdoor unit PCB.

displayed. Ex)HR ‡ The number of the indoor

Are the number

of indoor units connected to the

outdoor unit and displayed one

equal?

YES

Completion of manual pipe detection

NO

Check the central control address of indoor and HR unit.

Make sure that reset the outdoor unit power when changing the central control unit

Example of manual valve addressing (Non-Zoning setting)

(In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit)

• Prerequisite for manual valve addressing: central control address of each indoor unit must be preset differently at its wired remote control.

- Above setup must be done for all HR unit valves.

- The valve that is not connected with any indoor unit should be addressed with any other number than used address numbers of the valves connected with indoor units. (The valves does not work if the address numbers are same.)

Installation Manual 87

HR Unit PCB

ENGLISH

• Operation: None

• Display: None

No.

1

2

3

4

5

Display and setup Setup and Contents

• Operation: Turn dip S/W No.1 on to address valve #1

• Display: Existing value saved in EEPROM is displayed in 7-SEG.

• Operation: Set the digit of 10 to the number in Group High data of the wired remote control connected to the corresponding indoor unit to the valve #1 by pressing left tack S/W.

• Display: Digit increasing with the times of pressing tack S/W is displayed in left 7-SEG

• Operation: Set the digit of 1 to the number in Group Low data of the wired remote control connected to the corresponding indoor unit to the valve #1 by pressing right tack S/W.

• Display: Digit increasing with the times of pressing tack S/W is displayed in right 7-SEG

• Operation: Turn dip S/W No.1 off to save the address of valve #1

• Display: "11" displayed in 7-SEG disappears

7-SEG SW01M SW03M SW04M

7-SEG SW01M SW03M SW04M 7-SEG SW01M SW03M SW04M

7-SEG SW01M SW03M SW04M

HR Unit PCB

Example of manual valve addressing (Zoning setting)

(In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) Zoning control is connecting 2 or more indoor units at one pipe of HR unit. In case of Zoning control, in order to set controls with multiple indoor units connection uses the rotary switch. Namely, only the rotary switch changes from same valve set condition and set indoor units connection.

1) On dip switch of the corresponding valves and sets the rotary switch at 0.

2) Setting the number with tact switch.

3) In case of addition of indoor units to same port, increases 1 with the rotary switch and sets number with tact switch.

4) In case of checking the number which the corresponding valve is stored, turn on dip switch and set the number of rotary switch.

5) Indoor units set available 7 per a port(rotary switch 0~6), in case of setting above of 7 with rotary switch, it will display error.

6) Setting the rotary switch on original condition(HR unit number set conditions) after all finishing a piping setting.

7) The rotary switch set value of above number of indoor units which is connected with FF and prevents a malfunction. (Example: The case where 3 indoor units is connected in piping 1, sets from rotary switch 0,1,2 and 3,4,5 with FF set)

• Prerequisite for manual valve addressing: central control address of each indoor unit must be preset differ-

ently at its wired remote control.

- Above setup must be done for all HR unit valves.

- The valve that is not connected with any indoor unit should be addressed with any other number than used

address numbers of the valves connected with indoor units. (The valves does not work if the address numbers are same.)

• Operation: None

• Display: None

No.

1

2

3

4

5

6

7

Display and setup Setup and Contents

• Operation : Turn dip S/W No.1 on to address valve #1

• Display : Existing value saved in EEPROM is displayed in 7-SEG.

• Operation : Set the digit of 10(1) to the number in Group

High data of the wired remote control connected to the corresponding indoor unit to the valve #1 by pressing left tack S/W.

• Display : Digit increasing with the times of pressing tack S/W is displayed in left 7-SEG.

• Operation : SW05M : 1

• Display : Display former value.

•

Operation : Setting No. using SW03M and SW04M,

SW05M : 1

• Display : Display setting value.

• Operation : Turn dip S/W No.1 off to save the address of

valve #1

• Display : "11" displayed in 7-SEG disappears.

• Operation : Return valve of addressing HR unit.

• Display : None

7-SEG SW01M SW03M SW04M

0

SW05M

7-SEG SW01M SW03M SW04M

SW05M

0

7-SEG SW01M SW03M SW04M

SW05M

0

1

7-SEG SW01M SW03M SW04M

SW05M

7-SEG SW01M SW03M SW04M

SW05M

1

7-SEG SW01M SW03M SW04M

SW05M

1

7-SEG SW01M SW03M SW04M

SW05M

0

88 Outdoor Unit

Example of checking valve address

(In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit)

• Operation: Turn dip S/W No.1 on.

• Display: "11" is displayed in 7-SEG

No.

1

2

Display and Setup Setup and Contents

• Operation: Turn dip S/W No.1 on.

• 7-SEG disappeared

7-SEG SW01M

Identification of Manual Valve ID (Address)

Method of checking the pipe detection result at outdoor unit

• Operation: more than 2 dip switches turned on.

• Display: "Er" is displayed in 7-SEG

No.

1

Display and Setup Setup and Contents

7-SEG SW01M

Installation Manual 89

HR Unit PCB

ENGLISH

ROTARY 01 ROTARY 02

0

1) Wait for 5 minutes, after Pipe detection is completed.

2) Turn on the No.10,14,16 DIP S/W of SUB PCB at master unit

3) Check the data on 7- segment, switching rotary 01,02.

The connected port number of HR unit

The connected HR unit number

The auto addressing number of indoor unit (digit of 1)

The auto addressing number of indoor unit (digit of 10)

HR Unit PCB

Group Number setting

Group Number setting for Indoor Units

① Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off. ② The transmission lines connected to INTERNET terminal should be connected to central control of Outdoor

Unti with care for their polarity( A ’ A, B ’ B )

③ Turn the whole system on. ④ Set the group and Indoor Unit number with a wired remote control. ⑤ To control several sets of Indoor Units into a group, set the group ID from 0 to F for this purpose.

Outdoor Units

90 Outdoor Unit

Setting method of Master indoor unit in zoning

ROTARY 01 ROTARY 02 7 segment

0

1) Turn dip switch 5,6,10 on at system off.

2) Set the left Ratary switch for HR unit.(Rotary switch No. "0" ‘ HR unit No. "1")

3) Set the right Ratary switch for IDU unit.(Rotary switch No. "0" ‘ HR unit branch No. "1")

4) Display the Master IDU No. of the HR unit on 7segment.(Default display is "00" on 7segment)

5) Press the black button.(The IDU No. increase every 1 second in the zoning )

6) Set the Master IDU(Press the red button during 1.5seconds stop twinkling)

No. of Indoor unit.

No. of HR unit branch.

No. of HR unit.

CAUTION

• Waiting for 80seconds after power on.

• The zoning information and Master IDU information remove from EEPROM after Auto-addressing.

• If there is installed the central control, it is impossible setting of Master IDU in zoning.

SODU B SODU A IDU B IDU A INT B INT A

B(D) A(C) BA

WARNING

• Valve address and central control address of its corresponding indoor unit should be set identical in manual addressing.

Example) Group number setting

1

st

number indicate the group number

2

nd

number point out indoor unit number

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)

1 F

Indoor unitGroup

Installation Manual 91

HR Unit PCB

ENGLISH

EX)

HR unit

Valve (04) Valve (03) Valve (02) Valve (01)

Indoor unit (04) Indoor unit (03) Indoor unit (02) Indoor unit (01)

Central control address

Test Run

Functions of each Test run steps

Test Run

1

2

3

4

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

Confirm that 500 V megger shows 2 MΩ or more between power supply terminal block and ground. Do not operate in the case of 2 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 Liquid pipe, High Pressure Gas pipe, Low Pressure 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)

Step 0. Verify the command signals

Select function to be executed during the test run

Step 1. Examine Sensor

Examine the normal operations of the sensors attached to the outdoor/indoor units

Step 2. Examine Indoor unit EEV and wrong wirings

Examine the normal operation of EEV attached to the indoor unit, and examine the wirings of the indoor unit.

Step 3. Refrigerant Automatic Recharge

If additional bottling of the refrigerant is needed, operate to perform this automatically.

Step 4. Automatic Refrigerant Decisions

Inspect if the bottled refrigerant in the system has adequate quantity.

Step 5. Integrated Test Run

Process to verify the normal operations of the parts attached to the system, and verify normal operation of the system.

Step 6. Real-time sensor checking

Check the sensors while operating in real-time.

h Gas pipes and Liquid pipes connections inspection

: Inspect whether the gas pipes and Liquid pipes are connected to each other.

92 Outdoor Unit

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

Installation Manual 93

Test Run

ENGLISH

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, 10 outdoor temperature sensor

Note 1)

, 2 outdoor pressure sensors. This function is used along with Refrigerant Auto recharge and Quantity auto decide function. It is used for judging sensor abnormality.

Note2)

DIP Switch Settings

Warning : Please reset SUB PCB before starting this function

- Setting1

(Refrigerant Auto Recharge)

- Setting2

(Refrigerant Quantity Auto Decide)

- Setting3

(Integrated Test Run - cooling)

- Setting4

(Integrated Test Run - heating)

94 Outdoor Unit

Note 1. Outdoor temperature number is different according to each chassis.

Note 2. Please check the sensor that is found abnormal. Note 3. Each step is displayed on the Main PCB LED. Note 4. Please refer to the sensor error descriptions on the next page.

WARNING

1. Please confirm if auto addressing function was executed. (Check the number of installed indoor units)

2. Error may occur when the sensor is normal according to the installed location and the temperature conditions. When error occurs, please check each sensor and decide faultiness.

Chassis UX2(2 comp) UX3(2 comp) UX3(3 comp)

No. of sensor 11 11 13

Installation Manual 95

Test Run

ENGLISH

Start

3 minutes

past after power

reset

YES

DIP switch set

Setting 1 Setting 2 Setting 3 Setting 4

Note 3)

Press black button

for 2 seconds

Heat Pump?

NO

Press black button

for 5 seconds

NO

Sensor Normal

NO

Display Error

Press black button for 2 seconds

NO

YES

Press black button for

5 seconds

Setting 1 Setting 2 Setting 3 Setting 4

: Heat Recovery

End

All DIP switches OFF and press black

button for 2 seconds

Data Reset and Wait

Refrigerant

Auto Recharge

Refrigerant

Auto decide

Start Inspection of each Function

Cooling Heating

Test Run

96 Outdoor Unit

Display codifica errore controllo sensori

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 Unità esterna.

ex) Indoor unit No. 2 Pipe inlet temperature sensor

error

ex) Outdoor Master Unit Liquid pipe temperature

sensor error

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.

........

Indoor sensor error :

319

Outdoor sensor error :

309

Displaying error content

* 5 number of errors is displayed continuously and repeatedly.

No. Classification

1 Pipe In Temperature 2 Pipe Out Temperature 3 Indoor Air Temperature

Table 2. IDU Sensor Error Code

Table 1. ODU Sensor Error Code

No. Sensor type

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

Displaying error content

n 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

n 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)

Outdoor Air Temperature

Heat Exchanger Temperature

Partition Heat Exchanger Temperature(Upper)

Partition Heat Exchanger Temperature(Low)

Liquid Pipe Temperature

SC pipe out

Suction Temperature

Inverter Comp. Discharge Temperature

Constant Comp.1 Discharge Temperature

Constant Comp.2 Discharge Temperature

High Pressure

Low Pressure

IPM temperature

INV. Oil Balance Temperature

Constant Comp.1 Oil Balance Temperature 1

Constant Comp.1 Oil Balance Temperature 2

This function charges appropriate amount of refrigerant automatically through cycle operation. It can be used when refrigerant amount Isn't certain because of SVC and leakage.

Refrigerant Auto Charging (Setting 1)

DIP Switch Settings

Warning : Please reset SUB PCB before starting this function

Note

1. After installing the refrigerant charging device, as shown in figure, open the valve

2. In case air temperature is out of guaranteed temperature, it may end without performing Auto charging

3. Refrigerant charging Time may change according to the charging amount. (Abt. 3min/kg)

Installation Manual 97

Test Run

ENGLISH

Start

Wait for 3 min. after power reset

Set the Dip S/W.

(Refer to DIP S/W setting)

Press the black button.

(Press until ‘508’ is displayed)

Press the black button.

IDU runs with cooling mode In designated order.

Is it necessary to

charge refrigerant?

No

IDU and ODU are turned off when Auto Charging is completed. Close the valve.

Yes

Press the black button

Refrigerant Auto Charging Process

*1)

*2)

Main PCB SW01V

Press the black button

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

Completed.

Test Run

Low pressure gas pipe

CAUTION

1. Guaranteed temperature range (Error will occur if temperature is out of range) IDU : 20°C(68°F) ~ 32°C(90°F) ODU : 0°C(32°F) ~ 43°C (77°F)

2. For refrigerant charging, use designated device only. (Capillary Assem Set)

3. Set the IDU wired remote controller temperature sensing mode as IDU

4. Be careful that IDU should not be thermo off.

n Error contents about auto refrigerant charging function

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

2. : Low Pressure Descent Error (In case the system runs at low pressure limit for over 10 minutes)

3. : Judging rapid refrigerant inflow ( In case the liquid refrigerant flows in because of not using designated Capillary Assembly)

4. : Instability Error( In case the high/low pressure target doesn't get satisfied for some time after the starting operation)

98 Outdoor Unit

Low pressure

Low pressure gas pipe

gas pipe

manifold

Capillary Assembly

Procedure

1. Arrange manifold,capillary assembly, refrigerant vessel and scale

2. Connect manifold to the gas pipe service valve of ODU as shown in the figure.

3. Connect manifold and Capillary tube.

Use designated capillary assembly only. If designated capillary assembly isn't used, the system may get damaged.

4. Connect capillary and refrigerant vessel.

5. Purge hose and manifold.

6. After Is displayed, open the valve and charge the refrigerant

Refrigerant Checking Function (Setting 2)

This function judges refrigerant leakage and overcharging

It can be used with refrigerant auto charging function.

DIP Switch Settings

Warning : Please reset SUB PCB before starting this function

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.

Installation Manual 99

Test Run

ENGLISH

Inspection Start

Press black button for 2 seconds

YES

NO

Gas/Liquid

pipe direct

connection

Press black button for 2 seconds

Too much

Refrigerant

Proper Temperature

Thermo off indoor unit

Decide Refrigerant Quantity

Based on Refrigerant Quantity

Not enough

Refrigerant

Cannot tell

Quantity

YES

Refrigerant

Quantity

Normal

Display Error

End

Data Reset and Wait

Indoor Unit OFF

Test Run

100 Outdoor Unit

[ 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 ~ 35 °C ODU : 0 ~ 43 °C

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.

LG ARUB100LT3 INSTALLATION INSTRUCTIONS

Specifications and Main Features

Frequently Asked Questions

User Manual