LG ARUB060GSS4 MULTI V S, Outdoor Unit User Manual

MFL69717904

Rev.01_073018

INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

Please read this installation manual completely before installing the product.

Installation work must be performed in accordance with the national wiring

standards by authorized personnel only.

Please retain this installation manual for future reference after reading it

thoroughly.

Original instruction

ENGLISH

ITALIANO

ESPAÑOL

FRANÇAIS DEUTSCH

ČEŠTINA

ΕΛΛΗΝΙΚΆ

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

РУССКИЙ ЯЗЫК

УКРАÏНСЬКА

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 1

ENGLISH

• Do not cool excessively indoors. This may be harmful for your health

and may consume more electricity.

• Block sunlight with blinds or curtains while you are operating the air

conditioner.

• Keep doors or windows closed tightly while you are operating the air

conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate

indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period

of time.

• Open windows regularly for ventilation as the indoor air quality may

deteriorate if the air conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected

in the air filter may block the air flow or weaken the cooling / dehu-

midifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of

purchase or for warranty purposes. Write the model number and the

serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption

when you use the air conditioner. You can use your air conditioner

more efficiently by referring to the instructions below:

IMPORTANT SAFETY INSTRUC-

TIONS

READ ALL INSTRUCTIONS BEFORE

USING THE APPLIANCE.

Always comply with the following precautions

to avoid dangerous situations and ensure peak

performance of your product

WARNING

It can result in serious injury or death when the

directions are ignored.

CAUTION

It can result in minor injury or product damage

when the directions are ignored.

WARNING

• Installation or repairs made by unqualified

persons can result in hazards to you and oth-

ers.

• The information contained in the manual is

intended for use by a qualified service tech-

nician familiar with safety procedures and

equipped with the proper tools and test in-

struments.

• Failure to carefully read and follow all in-

structions in this manual can result in equip-

ment malfunction, property damage,

personal injury and/or death.

Installation

• Have all electric work done by a licensed

electrician according to "Electric Facility En-

gineering Standard" and "Interior Wire Regu-

lations" 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, al-

ways contact a dealer or an Authorized Serv-

ice Center.

- There is risk of fire, electric shock, explo-

sion, or injury.

• Do not install, remove, or re-install the unit

by yourself (customer).

- There is risk of fire, electric shock, explo-

sion, or injury.

• Do not store or use flammable gas or com-

bustibles 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 in-

stallation stand.

- It may cause injury, accident, or damage to

the product.

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 2

• 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 ex-

plosion.

• When installing and moving the air condi-

tioner 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 dam-

aged.

• Do not reconstruct to change the settings of

the protection devices.

- If the pressure switch, thermal switch, or

other protection device is shorted and op-

erated forcibly, or parts other than those

specified by LGE are used, fire or explosion

may result.

• Ventilate before operating air conditioner

when gas leaked out.

- It may cause explosion, fire, and burn.

• Securely install the cover of control box and

the panel.

- If the cover and panel are not installed se-

curely, dust or water may enter the out-

door 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 exceed-

ing the safety limit when the refrigerant

leaks.

- Consult the dealer regarding the appropri-

ate measures to prevent the safety limit

from being exceeded. Should the refriger-

ant leak and cause the safety limit to be ex-

ceeded, harzards due to lack of oxygen in

the room could result.

Operation

• Do not damage or use an unspecified power

cord.

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

injury.

• Use a dedicated outlet for this appliance.

- There is risk of fire or electrical shock.

• Be cautious that water could not enter the prod-

uct.

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

damage.

• Do not touch the power switch with wet hands.

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

injury.

• When the product is soaked (flooded or sub-

merged), 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.

CAUTION

Installation

• Always check for gas (refrigerant) leakage after in-

stallation 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 neighbor-

hoods.

- It may cause a problem for your neighbors.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the unit where combustible gas may

leak.

- If the gas leaks and accumulates around the unit,

an explosion may result.

• Use power cables of sufficient current carrying ca-

pacity 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 ex-

changer 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, communica-

tion station, or similar place, provide sufficient pro-

ENGLISH

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 3

ENGLISH

tection against noise.

The inverter equipment, private power genera-

tor, high-frequency medical equipment, or radio

communication equipment may cause the air

conditioner to operate erroneously, or fail to op-

erate. On the other hand, the air conditioner may

affect such equipment by creating noise that dis-

turbs 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 oper-

ation.

Operation

• Do not use the air conditioner in special environ-

ments.

Oil, steam, sulfuric smoke, etc. can significantly re-

duce 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 termi-

nals.

- 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 man-

ual.

- A bad connection may cause water leakage.

• Be very careful about product transportation.

- Only one person should not carry the product if it

weighs more than 20kg(44lbs).

Some products use PP bands for packaging. Do not

use any PP bands for a means

of transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so

may cut your fingers.

- When transporting the outdoor unit, suspending it

at the specified positions on the unit base. Also

support the outdoor unit at four points so that it

cannot slip sideways.

• Safely dispose of the packing materials.

Packing materials, such as nails and other metal or

wooden parts, may cause stabs or other injuries.

Tear apart and throw away plastic packaging bags so

that children may not play with them. If children play

with a plastic bag which was not torn apart, they face

the risk of suffocation.

• Turn on the power at least 6 hours before starting

operation.

- Starting operation immediately after turning on the

main power switch can result in severe damage to

internal parts. Keep the power switch turned on

during the operational season.

• Do not touch any of the refrigerant piping during and

after operation.

- It can cause a burn or frostbite.

• Do not operate the air conditioner with the panels or

guards removed.

- Rotating, hot, or high-voltage parts can cause in-

juries.

• 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 con-

necting the power of all indoor and outdoour units.

Auto-addressing should also be done in case of chang-

ing the indoor unit PCB.

• Use a firm stool or ladder when cleaning or maintain-

ing 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.

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 4

ENGLISH

2 TIPS FOR SAVING ENERGY

2 IMPORTANT SAFETY INSTRUCTIONS

6 INSTALLATION PROCESS

6 OUTDOOR UNITS INFORMATION

6 ALTERNATIVE REFRIGERANT R410A

7 SELECT THE BEST LOCATION

8 INSTALLATION SPACE

9 Air guide work

10 LIFTING METHOD

10 INSTALLATION

10 The location of the Anchor bolts

10 Foundation for Installation

11 Preparation of Piping

12 Plumbing materials and storage methods

13 REFRIGERANT PIPING INSTALLATION

13 Precautions on Pipe connection / Valve operation

13 Installation procedure for HR unit

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

14 Type of HR Unit

14 Installation of Zoning Control

15 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT

15 Preparation Work

15 Pipe Drawing Out during Single / Series connection

16 Refrigerant piping system

18 Refrigerant charging

19 Branch pipe Fitting

20 Leak Test and Vacuum drying

21 Vacuum Mode

21 Thermal insulation of refrigerant piping

22 ELECTRICAL WIRING

22 Caution

23 Control box and connecting position of wiring

23 Communication and Power Cables

24 Wiring of main power supply and equipment capacity

24 Field Wiring

25 Checking the setting of outdoor units

25 HR UNIT PCB

25 Setup the switch of HR Unit

27 Automatic Addressing

28 Example of manual valve addressing (Non-Zoning setting)

28 Example of manual valve addressing (Zoning setting)

29 Method of checking the pipe detection result at HR unit

29 Identiﬁcation of Manual Valve ID (Address)

30 Group Number setting

30 TEST RUN

30 Cool & Heat selector

31 Static pressure compensation mode

31 Night Low Noise Function

31 Setting the ODU address

31 Snow removal & rapid defrost

32 Target pressure adjusting

33 Self-Diagnosis Function

35 CAUTION FOR REFRIGERANT LEAK

35 Introduction

35 Checking procedure of limiting concentration

36 INSTALLATION GUIDE AT THE SEASIDE

36 Model Designation

36 Airborne Noise Emission

TABLE OF CONTENTS

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ENGLISH

The foundation must be level even

Outdoor unit foundation work

Avoid short circuits and ensure

sufﬁcient space is allowed for service

Installation of outdoor unit

Refer to automatic addressing ﬂowchart

Automatic addressing and

pipe dection of indoor unit

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

) there

must be no drop in pressure.

Airtight test

Multiple core cable must not be used.

(suitable cable should be selected)

Electrical work

(connection circuits and drive circuits)

Make sure no gaps are left where

the insulating materials are joined

Heat insulation work

Make sure airﬂow is sufﬁcient

Duct work

Adjust to downward gradient

Drain pipe work

Special attention to dryness,

cleanness and tightness

Refrigerant piping work

Check model name to

make sure the ﬁtting

is made correctly

Installation of indoor unit

Take account of gradient

of drain piping

Sleeve and insert work

Make connection clearly between outdoor, indoor,

remote controller and option.

Preparation of contract drawings

Indicate clearly who will be responsible for switch setting.

Determination of division work

The vacuum pump used must have a capacity of reaching at least

5 torr, more than 1 hour

Vacuum drying

Recharge correctly as calculated in this manual. and record the

amount of added refrigerant

Additional charge of refrigerant

Make sure there are no gaps left between the facing materials

used on the ceiling

Fit facing panels

Run each indoor unit in turn to make sure the pipe work

has been ﬁtted correctly

Test run adjustment

Explain the use of the system as clearly as possible to your customer and

make sure all relevant documentation is in order

Transfer to customer with explanation

Preheat the compress for more than 6 hours.

CAUTION

• The above list indicates the order in which the individual work opera-

tions are normally carried out but this order may be varied where

local conditions warrants such change.

• The thickness of the piping should comply with the relevant local

and national regulations for the designed pressure 3.8MPa(551.1psi).

• Since R410A is a mixed refrigerant, the required additional

refrigerant must be charged in its liquid state.(If the refrigerant is

charged in its gaseous state, its composition changes and the sys-

tem will not work properly.)

CAUTION

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

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

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

unit capacity.

CAUTION

• The wall thickness of the piping should comply with the relevant

local and national regulations for the designed pressure

3.8MPa(551.1psi).

• Since R410A is a mixed refrigerant, the required additional

refrigerant must be charged in its liquid state.

If the refrigerant is charged in its gaseous state, its composition

changes and the system will not work properly.

• Do not place the refrigerant container under the direct rays of the

sun to prevent it from exploding.

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

used.

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

softening.

• Be careful not to install wrongly to minimize economic loss

because it is expensive in comparison with R22.

ALTERNATIVE REFRIGERANT R410A

The refrigerant R410A has the property of higher operating pressure in

comparison with R22.

Therefore, all materials have the characteristics of higher resisting

pressure than R22 ones and this characteristic should be also consid-

ered during the installation.

R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone

depletion potential (ODP) of R410A is 0.

OUTDOOR UNITS INFORMATIONINSTALLATION PROCESS

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 6

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Air inlet grille

500mm

(19-11/16inch)

[Unit:mm(inch)]

Turn the air outlet side toward the

building's wall, fence or windbreak screen.

For detailed instructions on installing the HR Unit, see the installation

manual included with the HR Unit.

WARNING

Fix the outdoor unit firmly with anchor bolt or it may fall and hurt

people. (refer to ‘Foundation for installation’)

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 (sul-

fur) 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 pre-

vent any person or animal from accessing the outdoor unit.

• If installation site is area of heavy snowfall, then the following direc-

tions should be observed.

- Make the foundation as high as possible.

- Fit a snow protection hood.

Select installation location considering following conditions to avoid

bad condition when additionally performing defrost operation.

• Install the outdoor unit at a place well ventilated and having a lot of

sunshine in case of installing the product at a place with a high hu-

midity in winter (near beach, coast, lake, etc).

(Ex) Rooftop where sunshine always shines.

• Performance of heating will be reduced and preheat time of the in-

door unit may be lengthened in case of installing the outdoor unit in

winter at following location:

- Shade position with a narrow space

- Location with much moisture in neighboring floor.

- Location with much humidity around.

- Location where ventilation is good. It is recommended to install the

outdoor unit at a place with a lot of sunshine as possible as.

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

When installing the outdoor unit in a place that is constantly exposed to a

strong wind like a coast or on a high story of a building, secure a normal

fan operation by using a duct or a wind shield.

• Install the unit so that its discharge port faces to the wall of the build-

ing.

Keep a distance 500mm(19-11/16inch) or more between the unit and

the wall surface.

• Supposing the wind direction during the operation season of the air

conditioner, install the unit so that the discharge port is set at right

angle to the wind direction.

- 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 busi-

ness due to noise.)

• Place where refrigerant piping, drain piping and electrical wiring

works are easy.

Select installation location of the HR unit suitable for following condi-

tions

- 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.

NOTE

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

• If reducers are used, servicing space must be increased equal to reducer's di-

mension.

300 more

450

(Servicing space) (Servicing space)

(Servicing space)

100 more

(Serviceing space)

500

311

100 more

(Serviceing space)

126

147

38992 176

Inspection door

(servicing space)

500

540

150 486 150

165

218

[Unit : mm]

PRHR023/PRHR033/PRHR043

300 more

450

(Servicing space) (Servicing space)

(Servicing space)

100 more

(Serviceing space)

311

809

793

160

218

165

100 more

(Serviceing space)

389

176

147

126

540

Inspection door

(servicing space)

800

[Unit : mm]

PRHR063/PRHR083

No. Part Name

Description

PRHR033/PRHR043

PRHR063/PRHR083

PRHR023

Low pressure Gas pipe

connection port

Ø28.58 Brazing con-

nection

Ø22.2 Brazing connec-

tion

High pressure Gas pipe

connection port

Ø22.2 Brazing connec-

tion

Ø19.05 Brazing con-

nection

Liquid pipe connection

port

Ø15.88 Brazing con-

nection

(In case of PRHR033,

use Ø12.7)

Ø9.52 Brazing connec-

tion

Indoor unit Gas pipe

connection port

Ø15.88– Ø12.7

Brazing connection

Ø15.88– Ø12.7

Brazing connection

Indoor unit Liquid pipe

connection port

Ø9.52 – Ø6.35

Brazing connection

Ø9.52 – Ø6.35

Brazing connection

6 Control box - -

7 Hanger metal

Suspension bolt M10

or M8

Suspension bolt M10

or M8

[Unit : mm]

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ENGLISH

• The following values are the least space for installation. If any service

area is needed for service according to field circumstance, obtain

enough service space.

• The unit of values is mm.

In case of obstacles on the suction side

1. Stand alone installation

100(3-15/16)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

500(19-5/8)

or less

100(3-15/16)

or more

100(3-15/16)

or more

100(3-15/16)

or more

500(19-5/8)

or less

1000 (39-1/4)

or more

150(5-29/32)

or more

100(3-15/16)

or more

150(5-29/32)

or more

2. Collective installation

100(3-15/16)

or more

100(3-15/16)

or more

1000 (39-1/4)

or more

300(11-13/16)

or more

500(19-5/8)

or less

1000 (39-1/4)

or more

100(3-15/16)

or more

100(3-15/16)

or more

1000 (39-1/4)

or more

300(11-13/16)

or more

INSTALLATION SPACE

Unit:mm(inch)

In case of obstacles on the discharge side

1. Stand alone installation

500(19-5/8) or more

500(19-5/8)

or less

1000 (39-1/4)

or more

500(19-5/8) or more

1000 (39-1/4)

or more

100(3-15/16)

or more

500(19-5/8) or less

1000 (39-1/4)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

100(3-15/16)

or more

500(19-5/8)

or more

1000 (39-1/4)

or more

500(19-5/8) or less

250 (9-7/8)

or more

1000 (39-1/4)

or more

2. Collective installation

In case of obstacles on the suction and the

discharge side

Obstacle height of discharge side is higher than the unit

1. Stand alone installation

Unit:mm(inch)

L > H L > H

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 8

ENGLISH

2. Collective installation

Unit:mm(inch)

1000 (39-1/4)

or more

300(11-13/16)

or more

100(3-15/16)

or more

500(19-5/8)

or less

1250(49-1/4)

or more

300(11-13/16)

or more

1000 (39-1/4)

or more

100(3-15/16)

or more

100(3-15/16)

or more

500(19-5/8)

or less

500(19-5/8) or less

1000 (39-1/4)

or more

300(11-13/16)

1000 (39-1/4)

or more

300(11-13/16)

or more

100(3-15/16)

or more

1500(59)

or more

300(11-13/16)

or more

500(19-5/8)

or less

1000 (39-1/4)

or more

1500(59)

or more

100(3-15/16)

or more

L > H L > H

Obstacle height of discharge side is lower than the unit

1. Stand alone installation

2. Collective installation

L ≤ HL ≤ H

Seasonal wind and cautions in winter

• Install correctly with the prospect of snow or cold temperatures in

mind.

• Install the outdoor unit ideally not to come into contact with snow di-

rectly. If snow piles up it will freeze to the heat exchanger, and the

system will malfunction. Attach a snow hood to prevent any issues.

• Install the outdoor unit 500mm higher than the average snowfall.

• Remove any snow that piles higher than 100mm on the top of the

unit.

- In areas of high wind, do not install the units heat exchanger or dis-

charge fan perpendicular to the wind direction.

Air guide work

In cases where the outdoor unit is installed in an enclosed space, care

should be taken to ensure adequate airflow around the product, other-

wise failure could occur.

• The operating ratio should be at least 80%

• Louver angle should be 0~20 degree

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

Secure minimum intake area

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

may not be operating

• Minimum intake area (For reference)

Model ARUB060GSS4

Minimum intake area 1.2(15.5)

300mm

(11-13/16inch)

or more

Air guide

Air guide duct

Less than

20 degrees

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

Intake

area

150mm

(5-29/32inch)

or more

350mm

(13-25/32inch)

or more

350mm

(13-25/32inch)

or more

Less than

20 degrees

Louver pitch

100 mm

(3-15/16inch)

or more

Louver pitch

100 mm

(3-15/16inch)

or more

Unit : m

(ft

)

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ENGLISH

• When carrying the suspended, unit pass the ropes between legs of

base panel under the unit.

• Always lift the unit with ropes attached at four points so that impact

is not applied to the unit.

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

• Use only accessories and parts which are of the designated specifica-

tion when installing.

Air outlet grille Intake hole

Corner

Handle

Always hold the unit by the corners, as holding

it by the side intake holes on the casing may

cause them to deform.

Sub line

40° or less

WARNING

CAUTION

Be very careful while carrying the product.

•

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

20kg(44lbs).

• PP bands are used to pack some products. Do not use them as

a mean for transportation because they are dangerous.

• Do not touch heat exchanger fins with your bare hands. Other-

wise 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 chil-

dren to death.

• When carrying in Outdoor Unit, be sure to support it at four

points. Carrying in and lifting with 3-point support may make

Outdoor Unit unstable, resulting in a fall.

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

• Place extra cloth or boards in the locations where the casing

comes in contact with the sling to prevent damage.

•

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

• 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 sta-

tus. Thus, use anti-vibration materials (cushion pad) fully (The base

pad shall be more than 200 mm(7-7/8 inch)).

At least 200mm

(7-7/8 inch)

Foundation for Installation

• Install at places where it can endure the weight and vibration/noise

of the outdoor unit.

• The outdoor unit supports at the bottom shall have width of at least

100mm(3-15/16inch) under the Unit’s legs before being fixed.

• The outdoor unit supports should have minimum height of 200mm(7-

7/8inch).

• Anchor bolts must be inserted at least 75mm(2-15/16inch).

At least 100mm

(3-15/16inch)

At least 100mm

(3-15/16inch)

At least 100mm

(

3-15/16inch)

At least 100mm

(3-15/16inch)

At least 100mm

(3-15/16inch)

At least 100mm

(3-15/16inch)

Center of the Unit

For outdoor units

should not be

supported only

by the corner

supports.

Center of the Unit

ARUB060GSS4

a 920(36-7/32)

b 618(24-11/32)

c 330(13)

d 360(14-3/16)

e 151(5-15/16)

[Unit : mm(inch)]

The location of the Anchor bolts

INSTALLATIONLIFTING METHOD

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 10

ENGLISH

Unit : mm(inch)

200 (7-7/8)

Nut

75 (3)

200 (7-7/8)

Spring washer

Frame

Anti-vibration

materials

Four bolt are

required

3 thread ridges

H-Beam

Concrete

base

100(3-15/16)

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

installation may be bent.

Ⓑ Get and use M10 Anchor bolt.

the vibration protection in wide area.

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

Ⓔ H-beam support

Ⓕ Concrete support

CAUTION

• Be sure to remove the Pallet(Wood Support) of the bottom

side of the outdoor unit Base Pan before fixing the bolt. It

may cause the unstable state of the outdoor settlement,

and may cause freezing of the heat exchanger resulting in

abnormal operations.

• Be sure to remove the Pallet(Wood Support) of the bottom

side of the outdoor unit before welding. Not removing Pal-

let(Wood Support) causes hazard of fire during welding.

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

in the figure.

• Prepare all 4 wires as indicated in the drawing

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

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

WARNING

• Install where it can sufficiently support the weight of the out-

door unit.

If the support strength is not enough, the outdoor unit may drop

and hurt people.

• Install where the outdoor unit may not fall in strong wind or

earthquake.

If there is a fault in the supporting conditions, the outdoor unit

may fall and hurt people.

• Please take extra cautions on the supporting strength of the

ground, water outlet treatment(treatment of the water flowing

out of the outdoor unit in operation), and the passages of the

pipe and wiring, when making the ground support.

• Do not use tube or pipe for water outlet in the Base pan. Use

drainage instead for water outlet. The tube or pipe may freeze

and the water may not be drained.

Pallet(Wood Support)

- Remove before Installation

A : Location of the 2 fixation

holes on the front side of

the unit

B : Location of the 2 fixation

holes on the rear side of

the unit

C : wires

Flaring work

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

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

table above.

Check

- Compare the flared work with figure below.

- If flare is noted to be defective, cut off the flared section and do flar-

ing work again.

Burrs removal

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

- Put the end of the copper tube/pipe to downward direction as you re-

move burrs in order to avoid to let burrs drop in the tubing.

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 =

Flare shape and ﬂare nut tightening torque

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.

Pipe size

[mm(inch)]

Tightening

Torque[N

m(lbs

ft)]

A [mm(inch)] Flare shape

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

90°

±2

5°

R=0.4~0.8

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

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

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

flaring work in the following procedure.

Cut the pipes and the cable

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

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

- Cut the pipes a little longer than measured distance.

- Cut the cable 1500mm(59-1/16inch) longer than the pipe length.

Pipe

Reamer

Point down

Copper

tube

90°

Slanted Uneven Rough

Preparation of Piping

Indoor unit

[kW(Btu/h)]

Pipe [mm(inch)] "A" [mm(inch)]

Gas Liquid Gas Liquid

<5.6(19,100) 12.7(1/2) 6.35(1/4)

0.5~0.8

(0.02~0.03)

0~0.5

(0~0.02)

<16.0(54,600) 15.88(5/8) 9.52(3/8)

0.8~1.0

(0.03~0.04)

0.5~0.8

(0.02~0.03)

<22.4(76,400) 19.05(3/4) 9.52(3/8)

1.0~1.3

(0.04~0.05)

0.5~0.8

(0.02~0.03)

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 11

ENGLISH

Opening shutoff valve

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.

CAUTION

• Always use a charge hose for service port connection.

•

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

• When loosening a flare nut, always use two wrenches in

combination, When connecting the piping,

always use a spanner and torque wrench

in combination to tighten the flare nut.

• When connecting a flare nut, coat the

flare(inner and outer faces) with oil for

R410A(PVE) and hand tighten the nut

3 to 4 turns as the initial tightening.

Union

Insulation of shutoff valve

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

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

2 Precautions in high humidity circumstance:

This air conditioner has been tested according to the "ISO Condi-

tions with Mist" and confirmed that there is not any default. How-

ever, 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 fol-

lowing procedure:

- Heat insulation material to be prepared... EPDM (Ethylene Propy-

lene Diene Methylene)-over 120°C the heat-resistance tempera-

ture.

- Add the insulation over 10mm thickness at high humidity environ-

ment.

Indoor unit

Thermal insulator

(accessory)

Fastening band

(accessory)

Refrigerant piping

Closing shutoff valve

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

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

3 Make sure to tighten the cap securely.

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

Tightening torque

Shut off

valve size

[mm(inch)]

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

Shaft(valve body)

Cap

(Valve lid)

Service

port

Flare nut

Gas line pip-

ing attached

to unit

Closed Opened Hexagonal

Ø6.35(1/4)

6.0 ±0.6

(4.4±0.4)

5.0 ±0.5

(3.7±0.4)

4mm

(0.16inch)

17.6±2.0

(13.0±1.5)

12.7±2

(9.4±1.5)

16±2(12±1.5)

Ø9.52(3/8)

38±4(28±3.0)

Ø12.7(1/2)

10.0 ±1.0

(7.4±0.7)

20.0±2.0

(14.8±1.5)

55±6

(41±4.4)

Ø15.88(5/8)

12.0 ±1.2

(8.9±0.9)

5mm

(0.24inch)

25.0±2.5

(18.4±1.8)

75±7

(55±5.1)

Ø19.05(3/4)

14.0 ±1.4

(10.3±1.0)

110±10

(81.1±7.4)

Ø22.2(7/8)

30.0 ±3.0

(22.1±2.2)

8mm

(0.31inch)

25±3.0

(18.5±2.2)

Ø25.4(1.0)

Regulator

Auxiliary valve

Taping

(Should not

contain air)

Welding Point

Note) should not block the outlet side.

When the internal pressure in pipe is abo

ve the atmospheric pressure, pinhole is o

ccurred and it is a leakage cause.

Oxide scale

Nitrogen

Nitrogen gas Pressure

0.02MPa(2.9psi) less

Drying Cleanliness Airtight

Should be no moisture

inside

No dust inside.

There is no refrigerant

leakage

Items

Moisture

Dust

Leakage

Cause

failure

- Significant hydroly-

sis of refrigerant oil

- Degradation of re-

frigerant oil

- Poor insula’tion of

the compressor

- Do not cold and

warm

- Clogging of EEV,

Capillary

- Degradation of re-

frigerant oil

- Poor insulation of

the compressor

- Do not cold and

warm

- Clogging of EEV,

Capillary

- Gas shortages

- Degradation of re-

frigerant oil

- Poor insulation of

the compressor

- Do not cold and

warm

Coun-

termea-

sure

No moisture in the pipe

- Until the connec-

tion is completed,

the plumbing pipe

entrance should be

strictly controlled.

- Stop plumbing at

rainy day.

- Pipe entrance

should be taken

side or bottom.

When removal burr

after cutting pipe, pipe

entrance should be

taken down.

- Pipe entrance

should be fitted cap

when pass through

the walls.

- No dust in the pipe.

- Until the connec-

tion is completed,

the plumbing pipe

entrance should be

strictly controlled.

- Pipe entrance

should be taken

side or bottom.

- When removal burr

after cutting pipe,

pipe entrance

should be taken

down.

- Pipe entrance

should be fitted cap

when pass through

the walls.

- Airtightness test

should be.

- Brazing operations

to comply with

standards.

- Flare to comply

with standards.

- Flange connections

to comply with

standards.

Nitrogen substitution method

Welding, as when heating without nitrogen substitution a large

amount of the oxide film is formed on the internal piping.

The oxide film is a caused by clogging EEV, Capillary, oil hole of accu-

mulator and suction hole of oil pump in compressor.

It prevents normal operation of the compressor.

In order to avoid this problem, Welding should be done after replacing

air by nitrogen gas.

When welding plumbing pipe, the work is required.

Refrigerant piping on three principles

Plumbing materials and storage methods

Pipe must be able to obtain the specified thickness and should be

used with low impurities.

Also when handling storage, pipe must be careful to prevent a frac-

ture, deformity and wound.

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

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 12

ENGLISH

1 Always use the nitrogen.(not use oxygen, carbon dioxide, and

a Chevron gas): Please use the following nitrogen pressure

0.02MPa(2.9psi) Oxygen – Promotes oxidative degradation of

refrigerant oil. Because it is flammable, it is strictly prohibited

to use Carbon dioxide – Degrade the drying characteristics of

gas Chevron Gas – Toxic gas occurs when exposed to direct

flame.

2 Always use a pressure reducing valve.

3 Please do not use commercially available antioxidant.

The residual material seems to be the oxide scale is ob-

served. In fact, due to the organic acids generated by oxida-

tion of the alcohol contained in the anti-oxidants, ants nest

corrosion occurs. (causes of organic acid

’

alcohol + copper

+ water + temperature)

CAUTION

Refrigerant

Charging Port

Liquid pipe

High Pressure gas pipe

Low Pressure gas pipe

CAUTION

Please block the pipe knock outs of the front and side panels after

installing the pipes.

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

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 leak-

age after the work.

Installation procedure for HR unit

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 hexa-

gon 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 of Outdoor Unit, HR Unit and In-

door 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 de-

pending 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.

Six-sided Nut

(M10 or M8)

Hanger metal

Flat washer

(M10)

Hanging bolt

(M10 or M8)

Insulation

Gas pipe

Liquid pipe

HR Unit

Low pressure

Gas pipe

Liquid pipe

High pressure

Gas pipe

Whenever connecting the indoor units with the HR unit, install the in-

door 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).

CAUTION

WARNING

Before brazing work, remove gas in the HR Unit by cutting the three

pipes in the small circles on the figure.

If not, it may cause injuries.

Remove the caps before connecting pipes.

REFRIGERANT PIPING INSTALLATION

Precautions on Pipe connection / Valve operation

Pipe connection is done by connecting from the end of the pipe to the

branching pipes, and the refrigerant pipe coming out of the outdoor

unit is divided at the end to connect to each indoor unit and HR unit.

Flare connection for the indoor unit, and welding connection for the

outdoor pipe and the branching parts. (Including HR unit)

- Use hexagonal wrench to open/close the valve.

Gas pipe Ø15.88– Ø12.7

Liquid pipeØ9.52– Ø6.35

Brazing Type

Liquid pipe

High pressure

gas pipe

Low pressurse

gas pipe

(Brazing Type)

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 13

ENGLISH

Type of HR Unit

Select an HR unit according to the number of the indoor units to be in-

stalled. HR units are classified into 3 types by the number of con-

nectable indoor units.

Ex) Installation of 10 indoor units

Consists of HR unit for 8 branches and HR unit for 2 branches.

Joint Method of HR Unit (Big Duct : ARNU76GB8-, ARNU96GB8-)

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.

Installation of Zoning Control

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

For detailed instructions on installing the HR Unit, see the installation

manual included with the HR Unit.

[Reducers for indoor unit and HR unit]

Unit : mm(inch)

HR unit PRHR023(A) PRHR033(A)

PRHR043(A)

PRHR063(A)

PRHR083(A)

Low pressure

gas pipe

Ø22.2(7/8) Ø28.58(1-1/8) Ø28.58(1-1/8)

High pressure

gas pipe

Ø19.05(3/4) Ø22.2(7/8) Ø22.2(7/8)

Liquid pipe Ø9.52(3/8) Ø12.7(1/2) Ø15.88(5/8)

HR unit HR unit

sealing

Changeover under control

Auto changeover

Changeover under control

Zoning control group 1

Zoning control group 2

(Max. 8 Indoor Units)

Models

High pressure

Gas pipe

Low pressure

Liquid pipe

Indoor unit

reducer

HR unit

reducer

PRHR023(A)

OD22.2(7/8) Ø19.05(3/4) Ø15.88(5/8)

OD15.88(5/8) Ø

12.7(1/2)

Ø6.35(1/4)OD9.52(3/8)

OD19.05(3/4) Ø15.88(5/8)

OD12.7(1/2) Ø9.52(3/8)

Ø12.7(1/2)

OD22.2(7/8) Ø19.05(3/4) Ø15.88(5/8)

OD15.88(5/8) Ø12.7(1/2)

PRHR033(A)/

PRHR043(A)/

PRHR063(A)/

PRHR083(A)

OD19.05(3/4) Ø15.88(5/8)

OD28.58(1-1/8) Ø22.2(7/8) Ø19.05(3/4)

OD15.88(5/8) Ø12.7(1/2)

Ø6.35(1/4)OD9.52(3/8)

OD12.7(1/2) Ø9.52(3/8)

OD15.88(5/8)

Ø12.7(1/2)

Ø9.52(3/8)

PRHR033(A)(3 branches)PRHR023(A)(2 branches)

PRHR063(A)(6 branches)

PRHR083(A)(8 branches)

PRHR043(A)(4 branches)

2 HR Unit

HR Unit

4 3 2 1

(38k) (92k)

(48k)

(72k)

4 3 2 1

Gas pipe Ø15.88– Ø12.7

Liquid pipeØ9.52– Ø6.35

Brazing Type

Liquid pipe

High pressure

gas pipe

Low pressurse

gas pipe

(Brazing Type)

WARNING

• A branch pipe of HR unit allows up to 14.5kW(48kBtu/h) based on

cooling capacity of the indoor unit. (up to 14.5kW(48kBtu/h) for

max installation)

• The maximum total capacity of indoor units connected to a

PRHR042(A) HR unit is 58kW(192kBtu/h).

• The maximum number of indoor units connected to a

PRHR042(A) 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” func-

tion in the zoning group.

• When there are operating indoor units on cooling(heating) mode,

another indoor units aren’t changed on heating(cooling) mode in

the zoning group.

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 14

ENGLISH

- Pipe connections can be done on the front side or on the side accord-

ing to the installation environments.

- Be sure to let 0.2kgf/cm

(0.284lbs/in

) 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.

Bottom Side Pipe

Draw Out

Rear Side Pipe

Draw Out

Front Pipe

Draw Out

Right Side Pipe

Draw Out

Refrigerant Pipe

Regulator

Nitrogen

Taping

Valve

Nitrogen

Direction

Nitrogen

Direction

Wet towel

Removal Area for Liquid/Gas

pipe bottom side connections.

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 con-

necting wires using knock Outs.

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:

- Verify whether the liquid/gas pipes are locked.

- Extract remaining refrigerant or air inside using the service port.

- Remove the leakage prevention cap

Service Port

Refrigerant

Charging Port

Liquid pipe

High Pressure gas pipe

Leakage prevention cap

Low Pressure gas pipe

Pipe Knock Out for

Liquid/Gas pipes

Method of drawing out pipes on the rear side

- Proceed with the pipe work as shown in the below figure for rear

side pie drawing out.

Pipe Knock Out for Liquid/Gas pipes

※Pictures may differ depending on the model.

Pipe Drawing Out during Single / Series connection

Method of drawing out pipes on the front side and right side

- Proceed with the pipe work as shown in the below figure for front

side and right side pipe drawing out.

Preparation Work

- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or

Bottom pipe drawing outs.

- Use the wet towel as shown in the below figure before welding

PIPE CONNECTIONS BETWEEN

INDOOR AND OUTDOOR UNIT

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 15

Refrigerant piping system

Refrigerant Pipe Connection

Example : 12 Indoor Units connected

Ⓐ : Outdoor Unit

Ⓑ : Y branch

Ⓓ : Indoor Unit

Ⓖ : Header

Ⓗ : HR Unit

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

* If available on site, it use this size. Otherwise it can’t be increased.

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

Total pipe length = A+B+C1+C2+C3+D+a+b+c+d+e+f+g+i+j+k+l+m+n

≤ 300m(984ft)

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

sealing

"a"

“b”

■ Case 1 ("a")

: Maximum height is 15m(49ft) if you install with Y branch.

■ Case 2 ("b")

: Maximum height is 5m(16ft) in serial connection of HR units.

Upward outdoor

unit total capacity

Pipe diameter

HP Liquid mm(inch)

Low pressure gas

pipe

mm(inch)

High pressure gas

pipe

mm(inch)

Ø9.52

(3/8)

Ø19.05

(3/4)

Ø15.88

(5/8)

Downward Indoor

Unit total 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)

< 36.4(124,200) Ø9.52(3/8) Ø22.2(7/8)

Longest pipe length *Equivalent pipe length

A+B+C3+D+k ≤150m(492ft) A+B+C3+D+k ≤175m(574ft)

Longest pipe length after 1st branch

B+C+D+e ≤ 40m(131ft)

Difference in height (Outdoor Unit ÷ Indoor Unit)

H ≤ 50m(164ft)

Difference in height (Indoor Unit ÷ Indoor Unit)

h ≤ 15m(49ft)

"a", "b"

Difference in height(HR unit ÷ HR unit)

a ≤ 15m(49ft) , b ≤ 5m(16ft)

Upward

outdoor unit

total capacity

Pipe diameter

Pipe diameter when pipe

length is ≥ 90m(295 ft)

Liquid

mm(inch)

Low pres-

sure gas

pipe

mm(inch)

High pres-

sure gas

pipe

mm(inch)

Liquid

mm(inch)

Low pres-

sure gas

pipe

mm(inch)

High pres-

sure gas

pipe

mm(inch)

Ø9.52

(3/8)

Ø19.05

(3/4)

Ø15.88

(5/8)

Ø 12.7

(1/2)

Ø 22.2

(7/8)

Ø 19.05

(3/4)

ENGLISH

WARNING

• 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.

* If the large capacity indoor units (Over 5 HP; using over

Ø15.88(5/8)/9.52(3/8) are installed, it should be used the Valve

Group setting

• * : Assume equivalent pipe length of Y branch to be 500mm(19-

5/8inch), that of header to be 1000mm(39-1/4inch), calculation pur-

pose

• It is recommended that indoor unit is installed at lower position

than the header.

WARNING

When the any one (or both) of below conditions are satisfied, the

diameter of main pipe (A) must be increased according to below

table.

- The equivalent length between outdoor unit and the farthest in-

door unit is 90m(295ft) or more (Liquid, High pressure gas pipes

and Low pressure gas pipes are increased)

- The level difference (Outdoor unit ↔ Indoor unit) is 50m(164ft) or

more (Only liquid pipe is increased)

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 16

ENGLISH

Y branch, Header and HR unit connection pattern

Pattern 1

Pattern 2

Pattern 3

HR1

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

234567

HR2

2.1kW

(7kBtu/h)

2.1kW

(7kBtu/h)

2.1kW

(7kBtu/h)

2.1kW

(7kBtu/h)

2.1kW

(7kBtu/h)

7.25kW

(24kBtu/h)

7.25kW

(24kBtu/h)

3 4

HR1

1 2 3 4

Pattern 4

1 2 3 4

• The maximum total capacity of indoor

units is 58kW(192 kBtu/h).

• The maximum total capacity of a branch

pipe of HR unit is 14.5kW(48 kBtu/h).

• Impossible installation : Head branch pipe → HR unit

• Impossible installation : HR unit → Head branch

pipe → Y and Head branch pipe.

HR1

14.5kW

(48kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

Pattern 5

HR1

1 2

HR2

3 4

Pattern 6

12 345

14.5kW

(48kBtu/h)

7.25kW

(24kBtu/h)

7.25kW

(24kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

7.25kW

(24kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

Pattern 7

Pattern 8

HR1

1 2

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

• * : Maximum indoor units

er a branch are 8 indoor units

HR2

3 4

HR3

5 6

HR1

1 2

HR2

3 4 5 6 7 8

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

14.5kW

(48kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

3.63kW

(12kBtu/h)

7.25kW

(24kBtu/h)

7.25kW

(24kBtu/h)

• 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)

HR1

Outdoor

Unit

Indoor Unit Y Branch pipe

Low pressure Gas pipe

High pressure Gas pipe

Liquid pipe

Gas pipe

Liquid pipe

Head Branch pipe

Indoor

Unit

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 17

ENGLISH

• Keep the 40m(131ft) distance from the first branch to the farthest in-

door.

1) under 40m(131ft)

Keep the sum of indoor capacity under 58kW(192 kBtu/h).

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

1) under 40m(131ft)

Y branch

5m(16ft)

15m(49ft)

Keep the sum of indoor capacity under 58kW(192 kBtu/h).

Indoor Unit Connection

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)

CAUTION

• Bending radius should be

at least twice the diameter

of the pipe.

• Bend pipe after 500mm

(19-5/8inch) or more from

branch(or header).

Do not bend U type.

It may cause Performance

unsatisfactory or noise.

500mm

(19-5/8inch)

or more

500mm

(19-5/8inch)

or more

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.

Amount refrigerant of Indoor units

Example) 4Way Ceiling Cassette 14.5kW -1ea, Ceiling concealed

Duct 7.3kW-2ea, Wall Mounted 2.3kW-4ea

CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12kg(4.67lbs)

Attach the additional refrigerant table of IDU.

Additional charge(kg) = Total liquid pipe : Ø25.4 mm (1.0 inch) x

0.480 kg/m (0.323 lbs/ft)

+ Total liquid pipe : Ø22.2 mm (7/8 inch) x

0.354 kg/m (0.238 lbs/ft)

+ Total liquid pipe : Ø19.05 mm (3/4 inch) x

0.266 kg/m (0.179 lbs/ft)

+ Total liquid pipe : Ø15.88 mm (5/8 inch) x

0.173 kg/m (0.116 lbs/ft)

+ Total liquid pipe : Ø12.7 mm (1/2inch) x

0.118 kg/m (0.079 lbs/ft)

+ Total liquid pipe : Ø9.52 mm (3/8inch) x

0.061 kg/m (0.041 lbs/ft)

+ Total liquid pipe : Ø6.35 mm (1/4 inch) x

0.022 kg/m (0.015 lbs/ft)

+ Number of installed HR unit x

0.5 kg (1.1 lbs)

+ CF value of indoor unit

WARNING

• Regulation for refrigerant leakage

: the amount of refrigerant leakage should satisfy the following

equation for human safety.

If the above equation can not be satisfied, then follow the follow-

ing steps.

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

- Installation of effective opening part

- Reconfirmation of Outdoor Unit capacity and piping length

- Reduction of the amount of refrigerant

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

• Change Indoor Unit type

installation position should be over 2m(6.6ft) from the floor (Wall

mounted type ’ Cassette type)

• Adoption of ventilation system

: choose ordinary ventilation system or building ventilation sys-

tem

• Limitation in piping work

: Prepare for earthquake and thermal stress

Liquid pipe

High Pressure gas pipe

Low Pressure gas pipe

Ⓐ Manifold Gauge

Ⓑ Low pressure side Handle

WARNING

• Pipe to be vacuumed : gas pipe, liquid pipe

• If the refrigerant amount is not exact, it may not operate

properly.

• If additionally bottled refrigerant amount is over 10%, condenser

burst or insufficient indoor unit performance may be caused.

Volume of the room at which Indoor Unit of

the least capacity is installed

Total amount of refrigerant in the system

≤0.44kg/m

(0.028lbs/ft

)

Refrigerant charging

※6 & 8 Branches Model :

1.0kg/EA (2.2 lbs/EA)

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 18

ENGLISH

• When the number of indoor units to be connected to the branch

pipes is less than the number of branch pipes available for connec-

tion then cap pipes should be fitted to the surplus branches.

• Fit branch pipe lie in a horizontal plane.

Pinched pipe

Horizontal plane

View from point B in the direction of the arrow

Header

Insulator

(included with kit)

Liquid and gas

pipe joints

Insulator for

ﬁeld piping

Tape

(ﬁeld supply)

• 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 sec-

tion should be cut with a pipe cutter.

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

Ⓐ To Outdoor Unit

Ⓑ To Indoor Unit

• The indoor unit having larger ca-

pacity must be installed closer

to Ⓐ than smaller one.

• If the diameter of the refrigerant

piping selected by the proce-

dures described is different

from the size of the joint, the

connecting section should be

cut with a pipe cutter.

• When the number of pipes to be

connected is smaller than the

number of header branches, in-

stall a cap to the unconnected

branches.

Y branch

Facing

upwards

Facing

downwards

Within ±3° Within ±3°

Viewed from point A

in direction of arrow

Horizontal

plane

Within +/- 10°

Ⓐ

To Branch Piping or Indoor Unit

Ⓑ To Outdoor Unit

• Ensure that the branch pipes are attached horizontally or vertically

(see the diagram below.)

Branch pipe Fitting

• Joints between branch and pipe should be sealed with the tape in-

cluded in each kit.

• Any cap pipe should be insulated using the insulator provided with

each kit and then taped as described above.

Insulator

Insulator of ﬁeld pipe

Tape

Cap pipe

Insulator for cap pipe

Y branch pipe

Models Gas pipe Liquid pipe

ARBLN

01621

I.D19.05(3/4)

O.D15.88(5/8 )

I.D12.7(1/2)

I.D15.88(5/8)

I.D12.7(1/2)

292(11-1/2)

281(11-1/16)

(2-29/ 32)

70(2- 3 /4)

I.D12.7(1/2)

292(11-1/2)

281(11-1/16)

(2-29/ 32)

70(2- 3 /4)

I.D6.35(1/4)

I.D6.35(1/4) I.D9.52(3 / 8)

I.D9.52(3 / 8 )

O.D9.52(3/8)

ARBLN

03321

3 1 2

I.D19.05(3/4)

I.D25.4(1)

I.D22.2(7/8)

I.D19.05(3/4) I.D12.7(1/2)I.D15.88(5/8)

(3-9 / 32)

I.D19.05(3/4)

I.D12.7

(1/2)

I.D15.88(5/8)

70(2- 3 /4)

O.D19.05(3/4) I.D22.2(7/ 8)

O.D25. 4(1)

I.D28.58(1-1/8 )

80(3-5/32)

I.D25.4(1)

110(4- 11/32)

O.D19.05(3/4)

I.D22.2(7/8)

413(16-1/4)

390(15-11/32)

I.D12.7(1/2)

(2-29/ 32)

332(13-1/16)

321(12-5/8)

I.D6.35(1/4)

I.D9.52(3 / 8 )

ARBLN

07121

1 3

I.D12.7

(1/2)

376(14-13/16)

404(15-29/32)

120(4-23/32) 120(4-23/32)

90(3-17/32)

I.D15.88(5/8)

I.D19.05(3/4)

O.D19.05(3/4)

(3-25/32)

I.D22.2(7/8)

O.D22.2

(7/8)

I.D34.9(1-3/ 8 )

I.D28.58(1-1/8 )

O.D31.8(1- 1/4)I.D31.8(1-1/4)

I.D31.8(1-1/4)

3 2

I.D15.88(5/8)

I.D15.88(5/8)I.D12.7(1/2)

I.D12.7(1/2)

O.D12.7(1/2)

70(2- 3 /4)

110(4- 11/32)

371(14-19 / 32)

394(15- 1/2)

(3-9 / 32)

I.D19.05(3/4)

I.D6.35(1/4)I.D9.52(3 / 8 ) I.D9.52(3/8)

ARBLN

14521

471(18-17 /32)

517(20-11/32)

125

(4-29/32)

I.D41.3(1-5/8)

I.D38.1(1-1/2)

I.D22.2

(7/8)

I.D34.9(1-3/ 8 )

I.D34.9

(1-3/8)

I.D28.58(1-1/8 )

I.D15.88(5/8)

120(4-23/32)

I.D19.05(3/4)

O.D22.2

(7/8)

I.D41.3(1-5/8)

O.D38.1(1-1/2)

90(3-17/32)

130(5-1/ 8)

I.D41.3

(1-5/8)

I.D38.1(1-1/2)

O.D34.9(1- 3 / 8 )

I.D12.7(1/2)

I.D22.2(7/8)

O.D28.58(1- 1/ 8 )

70(2- 3 /4)

O.D15.88(5/8 )

120(4-23/32)

I.D19.05(3/4)

2 3 3

I.D15.88(5/8) I.D19.05(3/4)

I.D22.2(7/8)

I.D15.88(5/8)

I.D19.05(3/4)

I.D22.2(7/8)

I.D12.7

(1/2)

(3-25/32)

I.D15.88(5/8)

I.D19.05(3/4)

41616-3/8)

444(17-15/32)

I.D12.7(1/2)

O.D12.7(1/2)

O.D15.88(5/8 )

O.D19.05(3/4)

I.D22.2(7/8)

I.D6.35(1/4)

I.D9.52(3 / 8 )

110(4- 11/32)110(4- 11/32) 80(3-5/32)

ARBLN

23220

115(4-17/32)

100(3-15/16)

I.D12.7(1/2)

70(2-3/4)

120(4-23/32)

O.D.38.1(1-1/2)

I.D.34.9(1-3/8)

I.D.28.58(1-1/8)

O.D.28.58(1-1/8)

O.D.44.48(1-3/4)

175(6-7/8)

I.D.53.98(2-1/4) I.D.25.4(1)

I.D.53.98(2-1/4) I.D41.3(1-5/8)

I.D41.3(1-5/8)

I.D38.1(1-1/2)

I.D.44.48(1-3/4)

420(16-17/32)

490(19-9/32)

134

(5-17/32)

3 3

I.D31.8(1-1/4)

O.D22.2(7/ 8)

I.D22.2(7/8)

I.D15.88(5/8)

O.D15.88(5/8 )

I.D19.05(3/4)

I.D12.7(1/2) O.D12.7(1/2) I.D6.35(1/4)

I.D9.52(3/8)

110(4-11/32) 110(4-11/32)

I.D.25.4(1)

346(13-5/8)

379(14-29/32)

(3-25/32)

3 32

I.D22.2(7/8)

I.D15.88(5/8)

O.D19.05(3/4)

I.D19.05(3/4)

I.D19.05

(3/4)

[Unit:mm(inch)]

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

Insulate the header using

the insulation

material attached to the

branch pipe kit

as shown in the ﬁgure.

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 19

ENGLISH

[Unit:mm(inch)]

Leak test

Leak test should be made by pressurizing nitrogen gas to 3.8

MPa(551.1psi). If the pressure does not drop for 24 hours, the system

passes the test. If the pressure drops, check where the nitrogen leaks.

For the test method, refer to the following figure. (Make a test with

the service valves closed. Be also sure to pressurize liquid pipe, gas

pipe and high/low pressure common pipe)

The test result can be judged good if the pressure has not be reduced

after leaving for about one day after completion of nitrogen gas pres-

surization.

Indoor unit

Nitrogen gas

cylinder

Nitrogen gas

cylinder

Outdoor unit

High Pressure

Gas pipe

Liquide pipe

Low Pressure

Gas pipe

Liquid side

Gas side

HR unit

Header

Models Gas pipe Liquid pipe

4 branch

ARBL054

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

ID15.88(5/8)

360(14-5/32)

120(4-23/32)

ID12.7(1/2)

ID15.88(5/8)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)ID19.05(3/4)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

ID9.52(3/8)

ID6.35(1/4)

360(14-5/32)

ID6.35(1/4)

120(4-23/32)

ID9.52(3/8)

ID9.52(3/8)ID12.7(1/2)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

7 branch

ARBL057

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

120(4-23/32)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)

540(21-1/4)

ID15.88(5/8)

ID12.7(1/2)

ID15.88(5/8)ID19.05(3/4)

ID12.7(1/2)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

120(4-23/32)

ID9.52(3/8)

ID9.52(3/8)ID12.7(1/2)

540(21-1/4)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

4 branch

ARBL104

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)

ID15.88(5/8)ID15.88(5/8)

ID12.7(1/2)ID12.7(1/2)

ID15.88(5/8)

ID12.7(1/2)

400(15-23/32)

160(6-5/16)

ID19.05(3/4)

ID22.2(7/8)ID28.58(1-1/8)

ID25.4(1)

150

(5-29/32)

120

(4-23/32)

ID9.52(3/8)ID9.52(3/8)

ID6.35(1/4)ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

360(14-5/32)

ID6.35(1/4)

120(4-23/32)

ID9.52(3/8)

ID9.52(3/8)ID12.7(1/2)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

7 branch

ARBL107

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)

ID12.7(1/2)

160(6-5/16)

ID19.05(3/4)

ID22.2(7/8)ID28.58(1-1/8) ID25.4(1)

580(22-27/32)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

ID9.52(3/8)ID9.52(3/8)

ID6.35(1/4)ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

120(4-23/32)

ID9.52(3/8)

ID9.52(3/8)ID12.7(1/2)

700(27-9/16)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

10 branch

ARBL1010

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)

ID12.7(1/2)

160(6-5/16)

ID19.05(3/4)

ID22.2(7/8)ID28.58(1-1/8) ID25.4(1)

760(29-28/32)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

ID9.52(3/8)

ID6.35(1/4)

120(4-23/32)

ID9.52(3/8) ID9.52(3/8)ID12.7(1/2)

ID6.35(1/4)

720(28-11/32)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

10 branch

ARBL2010

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID15.88(5/8)

ID12.7(1/2)

150

(5-29/32)

120

(4-23/32)

ID15.88(5/8)

ID12.7(1/2)

ID19.05(3/4)

ID22.2(7/8)ID28.58(1-1/8) ID25.4(1)

775(30-17/32)

182(7-5/32)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

150

(5-29/32)

120

(4-23/32)

ID9.52(3/8)ID9.52(3/8)

ID6.35(1/4)ID6.35(1/4)

ID9.52(3/8)

ID6.35(1/4)

ID9.52(3/8) ID9.52(3/8)ID12.7(1/2)

ID6.35(1/4)

700(27-9/16)

60*9=540(21-1/2)

107(4-7/32)

ID15.88(5/8)

ID12.7(1/2)

Leak Test and Vacuum drying

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 0.01Mpa(1.5psi) for each 33.8°F

of temperature difference.

Correction = (Temp. at the time of pressurization – Temp. at the time of

check) X 0.1

For example: Temperature at the time of pressurization

3.8MPa(551psi) is 80.6°F

24 hour later : 3.73MPa(541psi), 68°F

In this case the pressure drop of 0.07MPa(10psi) 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.

WARNING

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 Flamma-

ble gases. Otherwise, it may cause fire or explosion.

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

Vacuum

Vacuum drying should be made from the service port provided on the outdoor

unit’s service valve to the vacuum pump commonly used for liquid pipe, gas

pipe and high/low pressure common pipe. (Make Vacuum from liquid pipe, gas

pipe and high/low pressure common pipe with the service valve closed.)

* Never perform air purging using refrigerant.

• Vacuum drying: Use a vacuum pump that can evacuate to -100.7kPa

(-14.6psi, 5Torr, -755mmHg).

- Evacuate the system from the liquid and gas pipes with a vacuum

pump for over 2 hrs and bring the system to -100.7kPa(-14.6psi).

After maintaining system under that condition for over 1 hr, confirm

the vacuum gauge rises. The system may contain moisture or leak.

- Following should be executed if there is a possibility of moisture re-

maining 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(7.3psi)(vacuum break) with nitrogen gas and then evacuate

it again with the vacuum pump for 1hr to -100.7kPa(-14.6psi)(vacuum

drying). If the system cannot be evacuated to -100.7kPa(-14.6psi)

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.

Scale

Use a graviometer. (One that can measure

down to 0.1kg(0.22lbs)). If you are unable

to prepare such a high-precision

gravimeter you may use a charge cylinder.

Indoor unit

Outdoor unit

High Pressure

Gas pipe

Liquide pipe

Low Pressure

Gas pipe

Liquid side

Gas side

Vacuum

pump

Vacuum

pump

HR unit

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 20

ENGLISH

Be sure to give insulation work to refrigerant piping by covering liquid

pipe and gas pipe separately with enough thickness heat-resistant poly-

ethylene, so that no gap is observed in the joint between indoor unit

and insulating material, and insulating materials themselves. When in-

sulation work is insufficient, there is a possibility of condensation drip,

etc. Pay special attention to insulation work to ceiling plenum.

Ⓐ Heat insulation material

Ⓑ Pipe

sulation material with a finishing tape.)

Heat insulation

material

Adhesive + Heat - resistant poly-

ethylene foam + Adhesive tape

Outer

covering

Indoor Vinyl tape

Floor ex-

posed

Water-proof hemp cloth +

Bronze asphalt

Outdoor

Water-proof hemp cloth +

Zinc plate + Oily paint

NOTE

When using polyethylene cover as covering material, asphalt roof-

ing shall not be required.

Bad example

• Do not insulate gas or low pressure pipe and liquid or highpres-

sure pipe together.

• Be sure to fully insulate connecting portion.

Ⓐ

These parts are not insulated.

Ⓐ Liquid pipe

Ⓑ Gas pipe

ⓓ

Finishing tape

ⓔ

Insulating material

ⓕ

Communication lines

Good example

Ⓐ Liquid pipe

Ⓑ Gas pipe

ⓓ

Insulating material

ⓔ

Communication lines

Separation

Power lines

Thermal insulation of refrigerant piping

NOTE

Always add an appropriate amount of refrigerant. (For the refrigerant addi-

tional 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.)

WARNING

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 Flamma-

ble gases. Otherwise, it may cause fire or explosion.

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

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 refriger-

ant, the refrigerant cycle may malfunction and the unit may be

damaged.

This function is used for creating vacuum in the system after compres-

sor replacement, ODU parts replacement or IDU addition/replacement.

Vacuum mode setting method

Vacuum mode off method

CAUTION

ODU operation stops during vacuum mode. Compressor can't

operate.

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“SVC” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Se3” Push the ‘●’ button

Start the vacuum mode : “VACC”

ODU V/V open

ODU EEV open

IDU EEV open

Dip switch off and push the reset button on Service PCB

DIP-SWITCH

SW01D

(reset)

SW04C

(x:cancel)

7-Segment

SW03C

(▶:forward)

SW02C

(◀:backward)

SW01C

(●:confirm)

Vacuum Mode

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 21

ENGLISH

1m1m

Ⓐ Sleeve

Ⓑ Heat insulating material

Ⓓ 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 incom-

bustible materials for both insulation and covering. (Vinyl covering should not

be used.)

Inner wall (concealed) Outer wall Outer wall (exposed)

Floor (fireproofing)

Penetrating portion on fire

limit and boundary wall

Roof pipe shaft

Install the Outdoor Unit communication cable 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.)

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

- 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.

- Never connect the main power source to terminal block of communi-

cation cable. If connected, electrical parts will be burnt out.

- Use 2-core shield cable for communication cable.( mark in the fig-

ure below) If communication cable 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)

- Only the communication cable specified should be connected to the

terminal block for Outdoor Unit communication.

CAUTION

Be sure to correct the outdoor unit to earth. Do not connect ground

wire to any gas pipe, liquid 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 defi-

ciency, it may cause an electric shock or fire.

Caution

- Follow ordinance of your governmental organization for technical

standard related to electrical equipment, wiring regulations and guid-

ance of each electric power company.

ELECTRICAL WIRING

Penetrations

2-Core Shield Cable

Multi-Core Cable

Remote

control

Remote

control

Remote

control

Remote

control

Indoor

Unit

Outdoor Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Outdoor Unit

Remote

control

Remote

control

Indoor

Unit

Indoor

Unit

Remote

control

Remote

control

Indoor

Unit

Indoor

Unit

Precautions when laying power wiring

Use round pressure terminals for connections to the power terminal

block.

Round pressure terminal

Power cable

- For wiring, use the designated power cable and connect firmly, then

secure to prevent outside pressure being exerted on the terminal

block.

- Use an appropriate screwdriver for tightening the terinal screws. A

screwdriver with a small head will strip the head and make proper

tighterning impossible.

- Over-tightening the terminal screws may break them.

CAUTION

• Use the 2-core shield cables for communication cables. Never use

them together with power cables.

• The conductive shielding layer of cable should be grounded to the

metal part of both units.

• Never use multi-core cable

• As this unit is equipped with an inverter, to install a phase leading

capacitor not only will deteriorate power factor improvement effect,

but also may cause capacitor abnormal heating. Therefore, never in-

stall 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.

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 cable which is the same thickness, do as shown in

the figure below.

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 22

ENGLISH

Side panel

WARNING

The temperature sensor for outdoor air should not be exposed to

direct sunlight.

- Provide an appropriate cover to intercept direct sunlight.

※Pictures may differ depending on the model.

6 HP

Indoor communication PCB

Main PCB

Terminal block

(Take care of the phase

Sequence of 1-phase

2-wire power system)

(Inside the control box)

NOTE

• The figures are based on assumed length of parallel cabling up

to 100m(328ft). For length in excess of 100m(328ft) the figures

will have to be recalculated in direct proportion to the additional

length of cable involved.

• If the power supply waveform continues to exhibit some distor-

tion the recommended spacing in the table should be increased.

- If the cable are laid inside conduits then the following point

must also be taken into account when grouping various cable

together for introduction into the conduits

- Power cable(including power supply to air conditioner) and

communication cables must not be laid inside the same

- In the same way, when grouping the power wires and com-

munication cables should not be bunched together.

CAUTION

If apparatus is not properly earthed then there is always a risk of

electric shocks, the earthing of the apparatus must be carried out by

a qualified person.

Communication and Power Cables

Communication cable

- Types : shielding cable

- Cross section : 1.0~1.5mm

(1.55x10

-3

~2.32x10

-3

)

- Maximum allowable temperature: 140°F

- Maximum allowable cable length: under 1,000m(3,281ft)

Remote control cable

- Types : 3-core cable

Central control cable

Separation of communication and power cables

- If communication and power cables are run alongside each other then

there is a strong likelihood of operational faults developing due to in-

terference in the signal wiring caused by electrostatic and electro-

magnetic coupling.

The tables below indicates our recommendation as to appropriate

spacing of communication and power cables where these are to be

run side by side

Product type Cable type Diameter

ACP

2-core cable

(Shielding cable)

1.0~1.5mm

(1.55x10

-3

~2.32x10

-3

)

AC Smart

2-core cable

(Shielding cable)

1.0~1.5mm

(1.55x10

-3

~2.32x10

-3

)

AC Ez

4-core cable

(Shielding cable)

1.0~1.5mm

(1.55x10

-3

~2.32x10

-3

)

Control box and connecting position of wiring

- Remove all of the screws at side panel and remove the panel by

pulling it forward.

- Connect communication cables between outdoor unit and indoor

units through the terminal block.

- When the central control system is connected to the outdoor unit, a

dedicated PCB must be connected between them.

- When connecting communication cable between outdoor unit and in-

door units with shielded cable, connect the shield ground to the earth

screw.

Current capacity of power cable Spacing

100V or more

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

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

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

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

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 23

ENGLISH

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

- Bear in mind ambient conditions (ambient temperature,direct sun-

light, rain water,etc.) when proceeding with the wiring and connec-

tions.

- The cable 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%.

- Specific wiring requirements should adhere to the wiring regulations

of the region.

- Power supply cords of parts of appliances for outdoor use should not

be lighter than polychloroprene sheathed flexible cord.

- Don't install an individual switch or electrical outlet to disconnect

each of indoor unit separately from the power supply.

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 ca-

pacity. Using fuse and wire or copper wire with too large capacity

may cause a malfunction of unit or fire.

WARNING

• Follow ordinance of your governmental organization for techni-

cal standard related to electrical equipment, wiring regulations

and guidance of each electric power company.

• Make sure to use specified cables for connections so that no

external force is imparted to terminal connections. If connec-

tions 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.

Single outdoor unit

Power supply switch

(Switch fuse : ELCB)

Power supply switch

(Switch fuse)

(Main Switch)

Pull Box(Installer Option)

: Single phase of power supply line[L1(L),L2(N)]

: Communication line (3 line): Wired remote control

: Communication line (2 shield line):

Between Indoor Unit and Outdoor Unit

Power supply

1 Phase

220-240V, 50Hz

220V, 60Hz

Power supply

1 Phase

220-240V, 50Hz

220V, 60Hz

HR unit

WARNING

•

Indoor Unit ground wires are required for preventing electrical shock ac-

cident 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, mo-

mentary blackout or the power goes on and off while the product is

operating, attach a reversed phase protection circuit locally. Run-

ning the product in reversed phase may break the compressor and

other parts.

Field Wiring

Wiring of main power supply and equipment

capacity

Example) Connection of transmission wire

[BUS type] [STAR type]

- Connection of communication

cable must be installed like

below figure between indoor

unit to outdoor unit.

- Abnormal operation can be

caused by communication de-

fect, when connection of com-

munication cable is installed like

below figure(STAR type).

HR unit

Example) Connection of power and communication cable

6 HP

Right side Front side

ODU-IDU

Communi-

cation cable

Hold Com-

munication

cable

Insulation

sleeves

attachment

Power/

Ground

cable

Power/

Ground cable

View A

Communication

cable

Over

50mm

gap

Fix ﬁrmly

not to be

displaced

Hold power

cable

Communication

cable

Main power

Terminal

block

Ground wire

Hold power

cable

Over

50mm gap

Power/

Ground cable

Comm-

unication

cable

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 24

ENGLISH

CAUTION

Be sure to turn off outdoor unit power before installation.

Checking the setting of outdoor units

Checking according to dip switch setting

- You can check the setting values of the outdoor unit from the 7 seg-

ment LED.

The dip switch setting should be changed when the power is OFF.

Checking the initial display

The number is sequentially appeared at the 7 segment in 5 seconds

after applying the power. This number represents the setting condi-

tion. (For example, represents R410A 10HP)

• Initial display order

• Example) ARUB060GSS4

HR UNIT PCB

For detailed instructions on installing the HR Unit, see the installation

manual included with the HR Unit.

Order No Note

①

4~12 Model capacity

②

1 Cooling only

2 Heat pump

3 Heat Recovery

③

22 220V

④

1 Standard

① ② ③ ④

07 3 22 1

Branch #1~4

Bypass

(from left)

SC EEV

ڸڹںڻڼڽھڿ

Branch #3,4

High/Low

(from top)

Branch #1,2

High/Low

(from top)

Branch #5~8

Bypass

(from left)

Branch #7,8

High/Low

(from top)

Branch #5,6

High/Low

(from top)

7-SEG

Main PCB (2EA, same P/No)

7-SEG

Liquid

Bypass

Valve

- SW02E : Use only SW

No.5

- SW01E : Branch #5~8

(from SW No.1)

- SW01C

- SW01D/SW01C/

SW02B/SW01B/SW02E

- SW01E : Branch #1~4

(from SW No.1)

Branch No.

Main PCB (Master)

Main PCB (Slave)

* Number from left in sequence for less-than-8 branch model.

** PRHR043 / PRHR033 / PRHR023 : Master Only

Main function of SW02E

Setup the switch of HR Unit

ON S/W Selection

No.1 Method for pipe detection of an HR Unit (Auto/Manual)

No.2

No. of connected branchesNo.3

No.4

No.5 Master/Slave (Main PCB) Setting

No.6 EEPROM factory initialization (4,5,6)

No.7

Use only in factory production

(preset to "OFF")

Zoning setting ("ON")

No.8

Use only in factory production

(preset to "OFF")

SW Function

Dip

SW02E

(8pin Dip

SW)

Selection of the method for

pipe detection

Selection of Master/Slave

Main PCB

Setting the Zoning Control

Selection of the No. of con-

nected branches

SW01E

(4pin Dip

SW)

Selection of the valve to ad-

dress

Rotary

SW01D

(Left)

Selection of the Valve Group

Control

SW01C

(Right)

Manual addressing of zoning

indoor units

Setting to address HR units

Push

SW02B

(Left)

Increase in the digit of 10

SW01B

(Right)

Increase in the digit of 1

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 25

ENGLISH

NOTE

Use the Valve Group Control when 2 branches are connected with only 1 indoor

unit which has higher capacity than 61 kBTU.

NOTE

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

used.

Models

ARBLB03321

Low Pressure

Gas Pipe

High Pressure

Gas Pipe

Liquid pipe

413

390

I.D19.05

I.D12.7

I.D15.88

I.D25.4

O.D25.4

110

O.D19.05

I.D22.2

I.D28.58

I.D12.7

332

321

I.D6.35

I.D9.52(3/8)

I.D9.52

I.D15.88

I.D12.7

I.D25.4

110

I.D19.05

3 2

O.D15.88

444

421

I.D15.88

I.D22.2

O.D15.88

I.D19.05

I.D9.52

Slave

1) Selection of the method for pipe detection of an HR unit

(Auto/Manual)

Auto Manual

Master

Switch No.1 Off Switch No.1 On

2) Selection of Master/Slave Main PCB

Master Slave

Switch No.5 Off Switch No.5 On

* Master Only

NOTE

Do not turn on any SW02E on Slave Main PCB except No.5.

3) Setting the zoning control

SW02E setting SW01E setting

Normal

control

Master

SW01E

Zoning

control

Master

SW01E

Turn the dip switch of

the zoning branch on.

EX) Branch 1,2 are

zoning control.

4) Selection of the No. of connected branches

1 branch

Connected

5 branch

Connected

2 branches

Connected

6 branch

Connected

3 branches

Connected

7 branch

Connected

4 branches

Connected

8 branch

Connected

* Master Only

h Each model is shipped with the switches No.2, 3, 4 pre-adjusted as

above in the factory.

WARNING

If you want to use a “Model” for “No. of using branch(es)” HR

Unit after closing the “Closing pipe No.”, set the dip switch for

“No. of using branch(es)” HR Unit.

Ex) If you want to use a PRHR083 for 4 branches HR Unit after

closing the 5~8th pipes, set the dip switch for 4 branches HR

Unit.

Main function of SW01D

1) Selection of the Valve Group Control

h Y branch pipe

[Unit : mm(inch)]

Valve Group

SW01D

Setting

Valve Group

SW01D

Setting

Not control 0 No. 5,6/7,8 Valve Control 8

No. 1,2 Valve Control 1 No. 1,2/5,6 Valve Control 9

No. 2,3 Valve Control 2 No. 1,2/7,8 Valve Control A

No. 3,4 Valve Control 3 No. 3,4/5,6 Valve Control B

No. 5,6 Valve Control 4 No. 3,4/7,8 Valve Control C

No. 6,7 Valve Control 5

No. 1,2/3,4/5,6 Valve Control

No. 7,8 Valve Control 6

No. 1,2/3,4/6,7 Valve Control

No. 1,2/3,4 Valve Control 7

No. 1,2/3,4/7,8 Valve Control

* Master Only

SW01C (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 sequen-

tially increasing numbers starting from '0'.

Maximum 16 HR Units can be installed.

Ex) Installation of 3 HR units

SW01B/SW01C/SW01E/SW02B

(Dip S/W and push S/W for Manual pipe detection)

- Set the address of the valve of the HR unit to the central control ad-

dress of the connected indoor unit.

- SW01E: selection of the valve to address

SW02B: increase in the digit of 10 of valve address

SW01B: increase in the last digit of valve address

SW01C: Manual addressing of zoning indoor units (use for Zoning

setting)

- Prerequisite for Manual pipe detection : central control address of

each indoor unit must be preset differently at its wired remote con-

trol.

AB AB AB

* Master Only

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 26

ENGLISH

DIP-SWITCH

SW01D(reset)

SW04C(x:cancel)

7-Segment

SW03C(▶:forward)

SW02C(◀:backward)

SW01C(●:confirm)

CAUTION

• In replacement of the indoor unit PCB, always perform Automatic

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.

• Automatic Addressing is only possible on the master Unit.

• Automatic Addressing has to be performed after 3 minutes to im-

prove communication.

The Procedure of Automatic Addressing

• Automatic addressing setting end

Numbers of indoor unit connection set whose

addressing is completed are indicated for 30seconds

on 7-segment LED after completing setting

Indoor address number is displayed on wired remote control or

indoor unit display window. It is not an error message, will

disappeared when on/off button is pressed on remote control

ex) Display of 01, 02, ..., 15 means connection of 15 indoor units

and Automatic addressing is completed normally.

Automatic addressing start

Waiting 3 minutes

Power On

Press RED Button

for 5 seconds.

(SW01C)

7-segment LED = 88

Don’t press RED Button

(SW01C)

Waiting about 2~7 minutes

7-segment LED

YES

NO Check the connections

of communication cable

= 88

Automatic Addressing

The address of indoor units would be set by Automatic Addressing

- Wait for 3 minutes after supplying power.

(Master and Slave outdoor units, indoor units)

- Press RED button of the outdoor units for 5 seconds. (SW01C)

- A “88” is indicated on 7-segment LED of the outdoor unit PCB.

- For completing addressing, 2~7 minutes are required depending on

numbers of connected indoor units

Numbers of connected indoor units whose addressing is completed are

indicated for 30 seconds on 7-segment LED of the outdoor unit PCB

- 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 connected indoor units)

[Heat Recovery (SERVICE PCB)]

S/W No. Setup

No.1

Manual addressing of valve #1 (Master)

/ #5 (Slave)

No.2

Manual addressing of valve #2 (Master)

/ #6 (Slave)

No.3

Manual addressing of valve #3 (Master)

/ #7 (Slave)

No.4

Manual addressing of valve #4 (Master)

/ #8 (Slave)

SW02B

Increase in the digit of 10 of valve ad-

dress

SW01B

Increase in the last digit of valve ad-

dress

SW01C

Manual addressing of zoning indoor

units

* Use for Zoning setting

SW01E

SW #1 On : Select Valve #1

Master

OFF

SW02B SW01B

Input the central control

address of Indoor unit

Master

SW01E

SW #1 Off : Finish Valve #1

Master

OFF

SW01E

SW #2 On : Select Valve #6

Slave

OFF

SW02B SW01B

Input the central control

address of Indoor unit

Slave

SW01E

SW #2 Off : Finish Valve #6

Slave

OFF

1) Normal setting (Non-Zoning setting)

ex) Manual pipe detection of Valve #1, 6.

SW01E

SW #1 On : Select Valve #5

Slave

OFF

SW02B SW01B

SW01C

After selecting No.1 zoning

indoor unit, input the central

control address of indoor unit.

Slave

After selecting No.2 zoning

indoor unit, input the central

control address of indoor unit.

Setting SW01C to ‘0’After selecting No.3 zoning

indoor unit, input the central

control address of indoor unit.

SW01E

SW #1 Off : Finish Valve #5

Slave

OFF

SW01E

SW #2 On : Select Valve #6

Slave

OFF

SW02B SW01B

Input the central control

address of Indoor unit

Slave

SW01E

SW #2 Off : Finish Valve #6

Slave

OFF

SW02B

SW01C

SW01B

Slave

SW01C

Slave

SW02B

SW01C

SW01B

Slave

NOTE

Use the Zoning Control when install two or more indoor units at 1 branch of HR

Unit.

The indoor units controlled by Zoning Control can be selected collectively as the

cooling/heating mode.

2) Zoning setting

ex) Manual pipe detection of Valve #5 with three zoning indoor units,

#6 without zoning unit.

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 27

ENGLISH

Flow chart of auto addressing for pipe detection

Completion of auto pipe detection

Are the number

of indoor units connected to the

outdoor unit wiring and displayed

one equal?

Reset the power of HR unit PCB

Confirm that the setting of No.2, 3 of

SW02E corresponds with the number of

indoor units.

Master unit PCB DIP switch on : No.5

Select the mode using ‘ȯ’, ‘ȭ’ Button :

“Idu” Push the ‘Ɨ’ button

Select the mode using ‘ȯ’, ‘ȭ’ Button :

“Idu” Push the ‘Ɨ’ button

Select the “Id 6” function using ‘ȯ’, ‘ȭ’

Button :“StA” Push the ‘Ɨ’ button

Select the “Id 5” function using ‘ȯ’, ‘ȭ’

Button :“Ath” or ”Atc” Push the ‘Ɨ’

button.

Outdoor temperature is over 15°C(59°F) :

“Ath” Using

Outdoor temperature is below 15°C(59°F) :

“Atc” Using

88' is displayed on 7-SEG of the outdoor

unit main PCB

Outdoor unit is operated for 5~60 minutes.

The number of indoor units detected is

displayed for 30 seconds on the outdoor

unit PCB after outdoor unit stopped

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

Incompletion of auto pipe detection

Retry auto pipe detection after

checking trouble

Is the pipe

setting condition

satisfied during the operation of

indoor unit?

Confirmation of indoor unit address setting

Turn No.1 of SW02E of HR unit PCB off.

YES

※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.

DIP-SWITCH

SW01D(reset)

SW04C(x:cancel)

7-Segment

SW03C(▶:forward)

SW02C(◀:backward)

SW01C(●:confirm)

Flow chart of manual addressing for pipe detection

Completion of manual pipe detection

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.

Wait for about 5 minutes.

The number of the indoor units installed is

displayed.

Ex)HR

⇒

The number of the indoor

Check the central control address of

indoor and HR unit.

Make sure that reset the outdoor

unit power when changing the

central control unit

Are the number

of indoor units connected to the

outdoor unit and displayed one

equal?

Execute in case of Auto pipe detection

failure

Turn No.1 of SW02E of HR unit PCB on.

YES

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 con-

trol.

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

- The valve that is not connected with any indoor unit should be ad-

dressed 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.)

Example of manual valve addressing (Zoning

setting)

(In case that an indoor unit of central control address “11”, “12” 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 in-

door 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 8 per a port(rotary switch 0~7), in case of

setting above of 8 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.

No.Display and setup Setup and Contents

7-SEG SW01E

SW02B SW01B

- Operation: None

- Display: None

7-SEG SW01E

SW02B SW01B

- Operation: Turn dip S/W No.1 on to ad-

dress valve #1

- Display: Existing value saved in EEP-

ROM is displayed in

7-SEG.

7-SEG SW01E

SW02B SW01B

- Operation: Set the digit of 10 to the

number in Group High data of the wired

remote control connected to the corre-

sponding 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

7-SEG SW01E

SW02B SW01B

- Operation: Set the digit of 1 to the num-

ber in Group Low data of the wired re-

mote 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

7-SEG SW01E

SW02B SW01B

- Operation: Turn dip S/W No.1 off to save

the address of

valve #1

- Display: "11" displayed in 7-SEG disap-

pears

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 28

ENGLISH

Identiﬁcation of Manual Valve ID (Address)

No. Display and setup Setup and Contents

7-SEG SW01E

- Operation: more than 2 dip switches

turned on.

- Display: "Er" is displayed in 7-SEG

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 3,4,5,6,7 with FF set)

- Prerequisite for manual valve addressing: central control address of

each indoor unit must be preset differently at its wired remote con-

trol.

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

- The valve that is not connected with any indoor unit should be ad-

dressed 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.)

No.Display and setup Setup and Contents

7-SEG SW01E

SW02B SW01B

SW01C

- Operation: None

- Display: None

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : Turn dip S/W No.1 on to ad-

dress valve #1

- Display : Existing value saved in EEP-

ROM is displayed in 7-SEG.

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : Set the digit of 10(1) to the

number in Group High data of the wired

remote control connected to the corre-

sponding 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.

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : SW01C : 1

- Display : Display former value.

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : Setting No. using SW02B

and SW01B, SW01C : 1

- Display : Display setting value.

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : Turn dip S/W No.1 off to save

the address of valve #1

- Display : "11" displayed in 7-SEG disap-

pears.

7-SEG SW01E

SW02B SW01B

SW01C

- Operation : Return valve of addressing

HR unit.

- Display : None

Setting the function

Select the mode/function/option/value using ‘▶’, ‘◀’ Button and con-

firm that using the ‘●’ button after dip switch No.5 is turned on.

DIP-SWITCH

SW01D(reset)

SW04C(x:cancel)

7-Segment

SW03C(▶:forward)

SW02C(◀:backward)

SW01C(●:confirm)

Method of checking the pipe detection result

at HR unit

In case that an indoor unit of central control address "11" is connected to a

valve #1 of an HR unit

No. Display and setup Setup and Contents

7-SEG SW01E

- Operation: Turn dip S/W No.1 on.

- Display: "11" is displayed in 7-SEG

7-SEG SW01E

- Operation: Turn dip S/W No.1 off.

- 7-SEG disappeared

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 29

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Example) Group number setting

number indicate the group number

2nd number point out indoor unit number

ODU.B ODU.A IDU.B IDU.A CEN.B CEN.A DRY1 DRY2 GND 12V

B(D) A(C)

1 F

Group Indoor unit

Group recognizing the 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)

Mode Function Option Value Action

Remarks

Content

Display1

Content

Display2

Content Display3

Content Display4

Implement Display5

Cool & Heat

Selector

oFF

op1~

op2

Selected

the option

- -

Change

the set

value

Blank

Save in

EEPROM

Static pres-

sure com-

pensation

oFF

op1~

op3

Selected

the option

- -

Change

the set

value

Blank

Save in

EEPROM

Night low

noise

oFF

op1~o

p12

Selected

the option

- -

Change

the set

value

Blank

Save in

EEPROM

ODU

address

0~255

set

the

value

Change

the set

value

Blank

Save in

EEPROM

Snow re-

moval &

rapid defrost

oFF

op1~

op3

Selected

the option

- -

Change

the set

value

Blank

Save in

EEPROM

Target

pressure

adjusting

oFF

op1~

op3

Selected

the option

- -

Change

the set

value

Blank

Save in

EEPROM

Valve (04)

EX)

Valve (03)

Valve (02)

Valve (01)

Indoor unit (04)

Indoor unit (03)

Indoor unit (02)

Indoor unit (01)

Central control address

HR unit

WARNING

• Valve address and central control address of its corresponding indoor

unit should be set identical in manual addressing.

TEST RUN

Cool & Heat selector

Mode setting method

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn1” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“oFF”,“op1”,“op2” Push the ‘●’ button

Cool & Heat Selection mode is set

Function setting

Switch control Function

Switch(TOP) Switch(Bottom)

oFF op1(mode) op2(mode)

Right Left Not operate Cooling Cooling

Right Right Not operate Heating Heating

Left - Not operate Fan mode Off

CAUTION

• Ask an authorized technician to setting a function.

• If do not use a function, set an off-mode.

• If use a function, first install a Cool & Heat selector.

Switch (TOP)

Switch (Bottom)

Left side

Right side

* Functions save in EEPROM will be kept continuously, though the

system power was reset.

* Dip switch 3 can be OFF except when installing the only 4 series in-

door units (named ARNU***4).

Group Number setting

Group Number setting for Indoor Units

- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is

OFF, otherwise turn off.

- The communication cables connected to CEN.A and CEN.B terminal

should be connected to central control of Outdoor Unit with care for

their polarity (A-A, B-B ).

- Turn the whole system on.

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

- To control several sets of Indoor Units into a group, set the group ID

from 0 to F for this purpose.

Outdoor Units (Main PCB)

Installation

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 30

ENGLISH

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn6” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“oFF”,“op1” ~ “op3” Push the ‘●’ button

Mode is set

CAUTION

• Ask an authorised technician to set up this function

• If you do not want to use this function, simply set off-mode

Mode setting

setting Mode

oFF Not setting

op1 Snow removal mode

op2 Rapid defrost mode

op3 Snow removal mode. + Rapid defrost mode.

Snow removal & rapid defrost

Mode setting method

Setting the ODU address

Mode setting method

CAUTION

• Request installer to set the function during installation.

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

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn3” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“op1~op15” Push the ‘●’ button

Start the Night low noise function :

Save the selected option value in EEPROM

Time Settings

Step Judgement Time(Hr) Operation Time(Hr)

op1 8 9

op2 6.5 10.5

op3 5 12

op4 8 9

op5 6.5 10.5

op6 5 12

op7 8 9

op8 6.5 10.5

op9 5 12

op10 continuous operation

op11 continuous operation

op12 continuous operation

op13 6.5 10.5

op14 6.5 10.5

op15 6.5 10.5

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn5” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“0” ~ “255” Push the ‘●’ button

ODU address is set

CAUTION

• Ask an authorized technician to setting a function.

• If use a function, first install a Central controller.

Night Low Noise Function

In cooling mode, this function makes the ODU fan operate at low RPM

to reduce the fan noise of ODU at night which has low cooling load.

Night low noise function setting method

FAN Maximum RPM of each step

Model ARUB060GSS4

Max.RPM

OP1 850

OP2 850

OP3 1000

Service PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn2” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“op1~op3” Push the ‘●’ button

Start the Static pressure compensation mode :

Save the selected option value in EEPROM

Static pressure compensation mode

This function secures the air flow rate of ODU, in case static pressure

has been applied like using duct at fan discharge of ODU.

Static pressure compensation mode setting method

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 31

ENGLISH

Service unit PCB DIP switch on : No.5

Select the mode using ‘▶’, ‘◀’ Button :

“Func” Push the ‘●’ button

Select the Function using ‘▶’, ‘◀’ Button :

“Fn8” Push the ‘●’ button

Select the Option using ‘▶’, ‘◀’ Button :

“oFF “, “ op1 “ ~ “op7 “ Push the ‘●’ button

Target pressure is set

Select the Option using ‘▶’, ‘◀’ Button :

“HEAT” , “COOL” Push the ‘●’ button

CAUTION

• Ask an authorized technician to setting a function.

• If do not use a function, set an off-mode.

• Change a power consumption or capacity.

Setting

Target pressure adjusting

Mode setting method

Mode Low Pressure (kpa) High pressure (kpa)

oFF 804 2990

op1 699 3121

op2 739 2827

op3 843 2696

op4 908 2565

op5 961 2435

op6 1026 2304

op7 804 2990

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 32

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Error No. of Compressor

Error No.

Error No. of Unit

Repeat

* Refer to the Indoor manual for some Indoor Error code.

Self-Diagnosis Function

Error Indicator

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

- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as

shown in the table.

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

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

Error Display

1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.

Ex)

Display Title Cause of Error

0 1 - Air temperature sensor of indoor unit Air temperature sensor of indoor unit is open or short

0 2 - Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is open or short

0 3 -

Communication error : wired remote controller ÷ in-

door unit

Failing to receive wired remote controller signal in indoor unit PCB

0 4 - Drain pump Malfunction of drain pump

0 5 -

Communication error : outdoor unit ÷ indoor unit

Failing to receive outdoor unit signal in indoor unit PCB

0 6 - Outlet pipe temperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short

0 9 - Indoor EEPROM Error

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

or FFFFFF

1 0 - Poor fan motor operation Disconnecting the fan motor connector/Failure of indoor fan motor lock

1 1 -

Communication error, Indoor unit ↔ Outdoor unit

Failing to receive signal in indoor unit

2 1 * Outdoor Unit Inverter Compressor IPM Fault Outdoor Unit Inverter Compressor Drive IPM Fault

2 2 * Inverter Board Input Over Current(RMS) of Outdoor Unit Outdoor Unit Inverter Board Input Current excess (RMS)

2 3 * Outdoor Unit Inverter Compressor DC link Low Voltage

DC charging is not performed at Outdoor Unit after starting relay turn

on.

2 4 * Outdoor Unit High Pressure Switch System is turned off by Outdoor Unit high pressure switch.

2 5 * Outdoor Unit Input Voltage High/ Low Voltage

Outdoor Unit input voltage is over 289V or below 73V(ARUB***BTE4)

Outdoor Unit input voltage is over 506V or below 414V(ARUB***DTE4)

2 6 * Outdoor Unit Inverter Compressor Start Failure

The First Start Failure by Outdoor Unit Inverter Compressor Abnor-

mality

2 9 *

Outdoor Unit Inverter Compressor Over Current Outdoor Unit Inverter Compressor Fault or Drive Fault

3 2 *

Outdoor Unit Inverter Compressor1 High Discharge Tem-

perature

Outdoor Unit Inverter Compressor1 High Discharge Temperature

3 4 *

High Pressure of Outdoor Unit High Pressure of Outdoor Unit

3 5 *

Low Pressure of Outdoor Unit Low Pressure of Outdoor Unit

36*

Outdoor Unit Low Compression Ratio Limited Outdoor Unit Low Compression Ratio Limited

40*

Outdoor Unit Inverter Compressor CT Sensor Fault Outdoor Unit Inverter Compressor CT Sensor open or short

41*

Outdoor Unit Inverter Compressor1 Discharge Tempera-

ture Sensor Fault

Outdoor Unit Inverter Compressor Discharge Temperature Sensor open

or short

42*

Outdoor Unit Low Pressure Sensor Fault Outdoor Unit Low Pressure Sensor open or short

43*

Outdoor Unit High Pressure Sensor Fault Outdoor Unit High Pressure Sensor open or short

44*

Outdoor Unit Air Temperature Sensor Fault Outdoor Unit Air Temperature Sensor open or short

45*

Outdoor Unit Heat Exchanger Temperature Sensor (Front

side) Fault

Outdoor Unit Heat Exchanger Temperature Sensor(Front side) open or

short

46*

Outdoor Unit Suction Temperature Sensor Fault Outdoor Unit Suction Temperature Sensor open or short

50*

Omitting connection of R, S, T power of Outdoor Unit Omitting connection of outdoor unit

51*

Excessive capacity of indoor units

Excessive connection of indoor units compared to capacity of Outdoor

Unit

52*

Communication error : inverter PCB ’ Main PCB

Failing to receive inverter signal at main PCB of Outdoor Unit

53*

Communication error : indoor unit ’ Main PCB of Out-

door Unit

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

57 -

Communication error : Main PCB ’ inverter PCB

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

Outdoor unit related error

Indoor unit related error

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 33

ENGLISH

Display Title Cause of Error

6 0 *

Inverter PCB EEPROM Error of Outdoor Unit Access Error of Inverter PCB of Outdoor Unit

6 2 *

Outdoor Unit Inverter Heatsink High Temperature

System is turned off by Outdoor Unit Inverter Heatsink High Tempera-

ture

6 5 *

Outdoor Unit Inverter Heatsink Temperature Sensor

Fault

Outdoor Unit Inverter Heatsink Temperature Sensor open or short

6 7 *

Outdoor Unit Fan Lock Restriction of Outdoor Unit

7 1 *

Converter CT Sensor Error of Outdoor Unit Converter CT Sensor open or short of Outdoor Unit

7 5 *

Outdoor Unit Fan CT Sensor Error Outdoor Unit Fan CT Sensor open or short

7 6 *

Outdoor Unit Fan DC Link High Voltage Error Outdoor Unit Fan DC Link High Voltage Error

7 7 *

Outdoor Unit Fan Over Current Error Outdoor Unit Fan Current is over 5A

7 9 *

Outdoor Unit Fan Start Failure Error

Outdoor Unit Fan First Position Sensing

Failure

8 6 *

Outdoor Unit Main PCB EEPROM Error

Communication Fail Between Outdoor Unit Main MICOM and EEP-

ROM or omitting EEPROM

8 7 *

Outdoor Unit Fan PCB EEPROM Error

Communication Fail Between Outdoor Unit Fan MICOM and EEP-

ROM or omitting EEPROM

1 0 4 *

Communication Error Between Outdoor Unit and Other

Outdoor Unit

Failing to receive Slave Unit signal at main PCB of Outdoor Unit

Outdoor Unit Fan PCB Communication Error Failing to receive fan signal at main PCB of unit.

1 0

Outdoor Unit FAN IPM Fault Error Instant Over Current at Outdoor Unit Fan IPM

Outdoor Unit Fan DC Link Low Voltage Error Outdoor Unit Fan DC Link Input Voltage is under 380V

113

Outdoor Unit Liquid pipe Temperature Sensor Error Liquid pipe temperature sensor of Outdoor Unit is open or short

114

Outdoor Unit Subcooling Inlet Temperature Sensor

Error

Outdoor Unit Subcooling Inlet Temperature Sensor Error

115

Outdoor Unit Subcooling Outlet Temperature Sensor

Error

Outdoor Unit Subcooling Outlet Temperature Sensor Error

116

Outdoor Unit Oil Level Sensor Error Oil Level Sensor of Outdoor Unit is open or short

145*

outdoor unit Main Board - External Board communica-

tion Error

outdoor unit Main Board - External Board communication Error

Failure of operation mode conversion at Outdoor Unit Failure of operation mode conversion at Outdoor Unit

Outdoor Unit Heat Exchanger Temperature Sensor

(upper part) Fault

Outdoor Unit Heat Exchanger Temperature Sensor (upper part) Fault

Outdoor Unit Heat Exchanger Temperature Sensor

(lower part) Fault

Outdoor Unit Heat Exchanger Temperature Sensor(lower part) open

or short

182

outdoor unit External Board Main-Sub Micom communi-

cation Error

Outdoor Unit Main Board Main-Sub Micom communication failed

193

Outdoor Unit Fan Heatsink High Temperature System is turned off by Outdoor Unit Fan Heatsink High Temperature

194

Outdoor Unit Fan Heatsink Temperature Sensor Fault Outdoor Unit Fan Heatsink Temperature Sensor open or short

2001

Searching pipe Error Failure of automatic addressing of valves

201

C +

#HR

HR unit1 Liqiud sensor error Liquid pipe sensor of HR unit open or short

202

C +

#HR

HR unit1 Sub Cooling Pipe In sensor error Sub Cooling Pipe In sensor of HR unit open or short

203

C +

#HR

HR unit1 Sub Cooling Pipe Out sensor error Sub Cooling Pipe Out sensor of HR unit. open or short

204

C +

#HR

Communication error Failing to receive HR unit signal at outdoor unit

205

C +

#HR

Communication error between HR unit and the

upgraded 485 modem.

4 series upgraded 485 communication error between HR unit and

HR unit modem

206

C +

#HR

Duplicate address error of HR unit

When the HR unit address is set duplicated at the 4 series

upgraded 485 communication

207

C +

#HR

Communication error between Master and Slave Main

PCB of HR Unit

When fail to communication between Master and Slave Main PCB

of HR Unit

208

C +

#HR

Communication error of EEPROM of HR Unit When

fail to communication of EEPROM of HR Unit

When fail to communication of EEPROM of HR Unit

Outdoor unit related error

HR unit related error

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 34

ENGLISH

Calculate minimum room capacity

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

smaller room.

- With partition and with opening

which serve as passage of air to

adjoining room

- Without partition

Limiting concentration is the limit of Freon gas concentration

where immediate measures can be taken without hurting human

body when refrigerant leaks in the air. The limiting concentration

shall be described in the unit of Kg/m

(lbs/ft

) (Freon gas weight

per unit air volume) for facilitating calculation.

Limiting concentration: 0.44kg/m

(0.028lbs/ft

)(R410A)

Amount of additional

replenished refrigerant

Total amount of replenished

refrigerant in refrigerant

facility [kg(lbs)]

Note : In case one refrigerant facility is

divided into 2 or more refrigerant

systems and each system is

independent, amount of replenished

refrigerant of each system shall be

adopted.

Amount of replenished

refrigerant per one outdoor

unit system

Amount of replenished

refrigerant at factory shipment

Amount of additionally

replenished refrigerant

depending on piping

length or piping

diameter at customer

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Opening

Partition

In the case of opening

without door , or 0.15

% or more openings

(to ﬂoor space) both

above and below door)

HR unit

Outdoor unit

(No.1 system)

Flow of

refrigerant

Indoor unit

Room where refrigerant leaks

(Refrigerant of the whole No.1

system ﬂows out.)

HR unit

- With partition and without opening which serve as passage of air to

adjoining room

Calculate refrigerant concentration

Total amount of replenishedrefrigerant

in refrigerant facility [kg(lbs)]

Capacity of smallest room

whereindoor unit is installed [m

(ft

)]

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

the same calculations by shifting to the second smallest, and the third small-

est rooms until at last the result is below the limiting concentration.

= Refrigerant concentration[Kg/m

(lbs/ft

)]

(R410A)

In case the concentration exceeds the limit

When the concentration exceeds the limit, change original plan or take

one of the countermeasures shown below:

• Countermeasure 1

Provide opening for ventilation.

Provide 0.15% or more opening to floor space both above and below

door, or provide opening without door.

• Countermeasure 2

Provide gas leak alarm linked with mechanical ventilator.

Reducing the outdoor refrigerant qty.

Outdoor unit

Indoor unit

Smallest

room

HR unit

Countermeasure 2

Gas leak alarm

Mechanical ventilator

Countermeasure 1

Opening effective to ventilation

Indoor unit

Pay a special attention to the place, such as a basement, etc.

where refrigerant can stay, since refrigerant is heavier than air.

Checking procedure of limiting concentration

Check limiting concentration along following steps and take appropri-

ate measure depending on the situation.

Calculate amount of all the replenished refrigerant (kg) per each refrig-

erant system.

The installer and system specialist shall secure safety against leakage

according to local regulations or standards.

The following standards may be applicable if local regulations are not

available.

Introduction

Though the R410A refrigerant is harmless and incombustible itself ,

the room to equip the air conditioner should be large to such an extent

that the refrigerant gas will not exceed the limiting concentration even

if the refrigerant gas leaks in the room.

Limiting concentration

CAUTION FOR REFRIGERANT LEAK

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 35

ENGLISH

CAUTION

• Air conditioners should not be installed in areas where

corrosive gases, such as acid or alkaline gas, are produced.

• Do not install the product where it could be exposed to sea

wind (salty wind) directly. It can result corrosion on the

product. Corrosion, particularly on the condenser and

evaporator fins, could cause product malfunction or inefficient

performance.

• If outdoor unit is installed close to the seaside, it should avoid

direct exposure to the sea wind. Otherwise it needs additional

anticorrosion treatment on the heat exchanger.

• Periodic ( more than once/year ) cleaning of the dust or salt

particles stuck on the heat exchanger by using water

In case, to install the outdoor unit on the seaside, set up a windbreak

not to be exposed to the sea wind.

- It should be strong enough like concrete to prevent the sea wind

from the sea.

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

- It should be keep more than 70 cm (2.3ft) of space between outdoor

unit and the windbreak for easy air flow.

Select a well-drained place.

Sea wind

Windbreak

Sea wind

• Product Name : Air conditioner

• Model Name :

• Additional information : Serial number is refer to the bar code on the

product.

Product Sales Name Model Factory Name

ARUx***ySSz

x = N(Heat Pump), V (Cooling only), B(Heat Recovery)

y = G(1Ø, 220-240V, 50Hz)

z = Numeric; (Series Number)

*** = Numeric; (Cooling capacity)

Product information

Airborne Noise Emission

The A-weighted sound pressure emitted by this product is below 70

dB.

** The noise level can vary depending on the site.

The figures quoted are emission level and are not necessarily safe

working levels.

Whilst there is a correlation between the emission and exposure lev-

els, this cannot be used reliably to determine whether or not further

precautions are required.

Factor that influence the actual level of exposure of the workforce in-

clude the characteristics of the work room and the other sources of

noise, i.e. the number of equipment and other adjacent processes and

the length of time for which an operator exposed to the noise. Also,

the permissible exposure level can vary from country to country.

This information, however, will enable the user of the equipment to

make a better evaluation of the hazard and risk.

Model Designation

Selecting the location(Outdoor Unit)

If the outdoor unit is to be installed close to the seaside, direct expo-

sure to the sea wind should be avoided. Install the outdoor unit on the

opposite side of the sea wind direction.

INSTALLATION GUIDE AT THE

SEASIDE

1,MFL69717904,영영 18. 8. 29. 영영 2:50 Page 36

[

Representative

] LG Electronics Inc.

EU Representative :

LG Electronics European Shared Service Center B.V.

Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer]

LG Electronics Inc. Changwon 2nd factory

84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

1,MFL69717904,영영 18. 8. 29. 영영 2:49 Page 80

LG ARUB060GSS4 MULTI V S, Outdoor Unit

Product's Documents

INSTALLATION MANUAL

Specifications

LG Electronics ARUB060GSS4 Questions and Answers

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