LG PRHR063 INSTALLATION INSTRUCTIONS

INSTALLATION MANUAL

AIR
CONDITIONER

www.lg.com

MFL32987320

Rev.02_022420

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.

[

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

Original instruction

Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.

РУССКИЙ ЯЗЫК

ENGLISH

УКРАÏНСЬКА

ITALIANO ESPAÑOL

ҚАЗАҚ ТІЛІ

БЕЛАРУСКАЯ МОВА

FRANÇAIS DEUTSCH

O‘ZBEK TILI

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

TIPS FOR SAVING ENERGY

2

ENGLISH

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:

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

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

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

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

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

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

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

Dealer’s name :

Date of purchase :

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS

3

ENGLISH

Read the precautions in this manual
carefully before operating the unit.

This symbol indicates that the
Operation Manual should be read
carefully.

This appliance is filled with
flammable refrigerant. (for R32)

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

The following safety guidelines are intended to prevent
unforeseen risks or damage from unsafe or incorrect operation
of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as
described below.

This symbol is displayed to indicate matters and operations

!

that can cause risk.
Read the part with this symbol carefully and follow the
instructions in order to avoid risk.

WARNING

!

This indicates that the failure to follow the instructions can cause
serious injury or death.

CAUTION

!

This indicates that the failure to follow the instructions can cause
the minor injury or damage to the product.

WARNING

!

Installation

• Installation or repairs made by unqualified persons can result in
hazards to you and others.

• The information contained in the manual is intended for use by
a qualified service technician familiar with safety procedures
and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this
manual can result in equipment malfunction, property damage,
personal injury and/or death.

SAFETY INSTRUCTIONS

4

ENGLISH

• The appliance shall be installed in accordance with the national
wiring regulation.

• Compliance with national gas regulations shall be observed.

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

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

performed improperly, electric shock or fire may result.

•

Ask the dealer or an authorized technician to install the HR unit.

- 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.

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

- Inadequate connection and fastening may generate heat and

cause a fire.

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

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

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

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

• Use the correctly rated breaker or fuse.

- There is risk of fire or electric shock.

• Do not damage or use an unspecified power cord.

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

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

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

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

• Be cautious when unpacking and installing the product.

- Sharp edges could cause injury. Be especially careful of the

case edges.

• 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.

SAFETY INSTRUCTIONS

• Mechanical connections shall be accessible for maintenance
purposes.

• When mechanical connectors are reused indoors, sealing parts
shall be renewed. (for R32)

• When flared joints are reused indoors, the flare part shall be re­fabricated. (for R32)

• Be aware that refrigerants may not contain an odour.

Operation

• Do not store or use flammable gas or combustibles near the
HR Unit.

- There is risk of fire or failure of product.

• Do not touch the power switch with wet hands.

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

• Keep any required ventilation openings clear of obstruction.

• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

CAUTION

!

Installation

• Do not install a HR unit in a space where persons exists such
as living room, office or meeting room with not only low but
also open ceiling.

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

- Low refrigerant levels may cause failure of product.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.

• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry accredited assessment authority, which authorizes
their competence to handle refrigerants safely in accordance
with an industry recognized assessment specification. (for
R32)

• The installation of pipe-work shall be kept to a minimum.

• Pipe-work shall be protected from physical damage.

5

ENGLISH

SAFETY INSTRUCTIONS

6

ENGLISH

• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts.

• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.

• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of
flammable refrigerants. (for R32)

Operation

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

- There is risk of property damage, failure of product, or electric

shock.

• This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the
appliance by a person responsible for their safety.

- Children should be supervised to ensure that they do not play

with the appliance.

• The appliance shall be stored so as to prevent mechanical
damage from occurring.

• Refrigerant tubing shall be protected or enclosed to avoid
damage.

• Flexible refrigerant connectors (such as connecting lines
between the indoor and outdoor unit) that may be displaced
during normal operations shall be protected against mechanical
damage.

• If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.

• To prevent the mixing of different types of refrigerants, be
sure to check the type of refrigerant used in the outdoor unit.

TABLE OF CONTENTS

2 TIPS FOR SAVING ENERGY

3 SAFETY INSTRUCTIONS

8 FEATURES

10 INSTALLATION PART

11 INSTALLATION

11 Selection of the best location
11 Dimensional drawings
14 HR Unit Installation
17 Insulation
18 Wiring Connection
19 Electric Characteristics
20 HR Unit PCB
21 Setup the switch of HR Unit

28 COIL EXCHANGING METHOD

TABLE OF CONTENTS

7

ENGLISH

29 JOINT METHOD OF HR UNIT

FEATURES

Control Box

Connection Pipe
(to outdoor unit)

Connection Pipe
(to outdoor unit)

Connection Pipe
(to indoor unit)

8

ENGLISH

FEATURES

Type of HR unit

Max. Connectable No. of Indoor Units

Max. Connectable No. of Indoor Units of a branch

Nominal Input

Net. Weight

Dimensions
(WxHxD)

Casing

Connecting
Pipes

Sound Absorbing Insulation Material

Current

Power Supply

Cooling [W]

Heating [W]

kg

lbs

mm

Inch

Indoor side

Outdoor side

Minimum circuit Amps(MCA)

Maximum fuse Amps(MFA)

Liquid Pipe [mm]

Gas Pipe [mm]

Liquid [mm]

Low Pressure

[mm]

High Pressure

[mm]

2 port HR unit 3 port HR unit 4 port HR unit

16 24 32

88 8

39.8

37.2

14.9 16.7 18.2

32.8 36.8 40.1

786 X 218 X 657

30.9 X 8.6 X 25.9

Galvanized steel plate

Ø 9.52 – Ø 6.35

Ø 15.88 – Ø 12.7

Ø 9.52 Ø 12.7 Ø 15.88

Ø 22.2 Ø 28.58 Ø 28.58

Ø 19.05 Ø 22.2 Ø 22.2

Polyethylene Foam

0.17

15

220-240 V~ 50/60 Hz

FEATURES

Control Box

Connection Pipe
(to outdoor unit)

Connection Pipe
(to outdoor unit)

Connection Pipe
(to indoor unit)

9

ENGLISH

Type of HR unit

Max. Connectable No. of Indoor Units

Max. Connectable No. of Indoor Units of a branch

Nominal Input

Net. Weight

Dimensions
(WxHxD)

Casing

Connecting
Pipes

Sound Absorbing Insulation Material

Current

Power Supply

Cooling [W]

Heating [W]

kg

lbs

mm

Inch

Indoor side

Outdoor
side

Minimum circuit Amps(MCA)

Maximum fuse Amps(MFA)

Liquid Pipe [mm]

Gas Pipe [mm]

Liquid [mm]

Low Pressure [mm]

High Pressure [mm]

6 port HR unit 8 port HR unit

48 64

88

75.9

72.1

27.2 30.7

60 67.7

1 113 X 218 X 657

43.8 X 8.6 X 25.9

Galvanized steel plate

Ø 9.52 – Ø 6.35

Ø 15.88 – Ø 12.7

Ø 15.88

Ø 28.58

Ø 22.2

Polyethylene Foam

0.27

15

220-240 V ~ 50/60 Hz

INSTALLATION PART

10

ENGLISH

INSTALLATION PART

- Installation Manual

- Hanging bolts (4 x M10 or M8), Nut(8 x M10 or M8), Flat washers(8 x M10)

- Reducers

[Unit : mm(inch)]

Type of HR unit

2 port

HR unit
reducer

3 port/
4 port/
6 port/
8 port

Liquid pipe

OD 15.88(5/8)

Ø 12.7(1/2)

OD 12.7(1/2) Ø 9.52(3/8)

Ø 6.35(1/4) OD 9.52(3/8)

Ø 9.52(3/8)

Gas pipe

High pressure

OD 19.05(3/4) Ø 15.88(5/8)

OD 12.7(1/2)

OD 22.2(7/8) Ø 19.05(3/4) Ø 15.88(5/8)

OD 15.88(5/8) Ø 12.7(1/2)

Ø 12.7(1/2)

Ø 9.52(3/8)

Low pressure

OD 22.2(7/8) Ø 19.05(3/4) Ø 15.88(5/8)

OD 15.88(5/8) Ø 12.7(1/2)

OD 28.58(1-1/8) Ø 22.2(7/8) Ø 19.05(3/4)

OD 19.05(3/4) Ø 15.88(5/8)

INSTALLATION

INSTALLATION

Selection of the best location

Select installation location of the HR unit suitable for following conditions

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

- Sufficient service space must be obtained.

- Refrigerant pipe must not exceed limited length.

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

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

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

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

Dimensional drawings

11

ENGLISH

2 port / 3port / 4port HR unit

500

540

500

150 486 150

218

7

Inspection door
(servicing space)

2

3

1

165

311

[Unit : mm]

100 more
(Servicing space)

300 more

(Servicing space) (Servicing space)

300 more

(Servicing space)

126

147

6

38992 176

300 more

100 more
(Servicing space)

450

(Servicing space)

more

54

55

19

12

ENGLISH

INSTALLATION

6 port / 8 port HR unit

540

218

160

793

809

800

Inspection door
(servicing space)

160

7

300 more

311

2

3

1

165

(Servicing space) (Servicing space)

300 more

(Servicing space)

6

126

147

92

389

[Unit : mm]

100 more
(Servicing space)

300 more

100 more
(Servicing space)

450

more

(Servicing space)

4

176

[Unit : mm]

Type of HR unit

No. Part Name<None>

3 port / 4 port
6 port / 8 port

2 port

Description

Low pressure Gas pipe

1

connection port
High pressure Gas pipe

2

connection port

Ø 28.58 Brazing connection Ø 22.2 Brazing connection

Ø 22.2 Brazing connection Ø 19.05 Brazing connection

Ø 15.88 Brazing connection

3 Liquid pipe connection port

(In a type of 3 port HR unit,

Ø 9.52 Brazing connection

use Ø12.7)

Indoor unit Gas pipe

4

connection port
Indoor unit Liquid pipe

5

connection port

Ø 15.88 – Ø 12.7
Brazing connection

Ø 9.52 – Ø6 .35
Brazing connection

Ø 15.88 – Ø 12.7
Brazing connection

Ø 9.52 – Ø 6.35

Brazing connection
6 Control box - ­7 Hanger metal Suspension bolt M10 or M8 Suspension bolt M10 or M8

5

55

19

NOTE

* Be sure to install the inspection door at the electric control side.
** If reducers are used, servicing space must be increased equal to reducer's dimension.

INSTALLATION

Minimum floor area (for R32)

- The appliance shall be installed, operated and stored in a room with a floor area larger than the
minimum area.

- Use the graph of table to determine the minimum area.

13

ENGLISH

Amin (m2)

600

500

400

300

200

100

0

0 1.224 2 3 4 5 6 7 8

- m : Total refrigerant amount in the system

- Total refrigerant amount : factory refrigerant charge + additional refrigerant amount

- Amin : minimum area for installation

Floor location

m (kg) Amin (m

< 1.224

1.224 12.9

1.4 16.82

1.6 21.97

1.8 27.80
2 34.32

2.2 41.53

2.4 49.42

2.6 58.00

2.8 67.27
3 77.22

3.2 87.86

3.4 99.19

3.6 111.20

3.8 123.90
4 137.29

4.2 151.36

4.4 166.12

2

)

-

Floor location

m (kg) Amin (m

4.6 181.56

4.8 197.70
5 214.51

5.2 232.02

5.4 250.21

5.6 269.09

5.8 288.65
6 308.90

6.2 329.84

6.4 351.46

6.6 373.77

6.8 396.76
7 420.45

7.2 444.81

7.4 469.87

7.6 495.61

7.8 522.04

2

)

Wall mounted

m (kg) Amin (m

< 1.224

1.224 1.43

1.4 1.87

1.6 2.44

1.8 3.09
2 3.81

2.2 4.61

2.4 5.49

2.6 6.44

2.8 7.47
3 8.58

3.2 9.76

3.4 11.02

3.6 12.36

3.8 13.77
4 15.25

4.2 16.82

4.4 18.46

2

)

-

Wall mounted

m (kg) Amin (m

4.6 20.17

4.8 21.97
5 23.83

5.2 25.78

5.4 27.80

5.6 29.90

5.8 32.07
6 34.32

6.2 36.65

6.4 39.05

6.6 41.53

6.8 44.08
7 46.72

7.2 49.42

7.4 52.21

7.6 55.07

7.8 58.00

2

)

Ceiling Mounted

m (kg) Amin (m

< 1.224

1.224 0.956

1.4 1.25

1.6 1.63

1.8 2.07
2 2.55

2.2 3.09

2.4 3.68

2.6 4.31

2.8 5.00
3 5.74

3.2 6.54

3.4 7.38

3.6 8.27

3.8 9.22
4 10.21

4.2 11.26

4.4 12.36

2

)

-

Floor standing

Wall mounted
Ceiling mounted

m (kg)

Ceiling Mounted

m (kg) Amin (m

4.6 13.50

4.8 14.70
5 15.96

5.2 17.26

5.4 18.61

5.6 20.01

5.8 21.47
6 22.98

6.2 24.53

6.4 26.14

6.6 27.80

6.8 29.51
7 31.27

7.2 33.09

7.4 34.95

7.6 36.86

7.8 38.83

2

)

14

1 Set anchor

2 Plate washer

3 Spring washer
4 Nut

5 Suspension

bolts

Old building New building

Hanger metal

Flat washer

ENGLISH

INSTALLATION

HR Unit Installation

- Select and mark the position for fixing bolts.

- Drill the hole for set anchor on the face of
ceiling.

WARNING

!

Tighten the nut and bolt to prevent unit
falling.

- Insert the set anchor and washer onto the
suspension bolts for locking the suspension
bolts on the ceiling.

- Mount the suspension bolts to the set
anchor firmly.

- Secure the installation plates onto the
suspension bolts (adjust level roughly) using
nuts, washers and spring washers.

1 Using an insert-hole-in- anchor, hang the

suspension bolt.

2 Install a six-sided nut and a flat washer

(locally-procured)to the suspension bolt as
shown in the figure in the bottom, and fit
the main unit to hang on the hanger metal.

3 After checking with a level that the unit is

level, tighten the hexagon nut.
* The tilt of the unit should be within ±5°

in front/back and left/right.

4 This unit should be installed suspended

from ceiling and side A should always be
facing up.

Six-sided Nut
(M10 or M8)

Hanger metal

Hanger metal

Flat washer

Flat washer
(M10)

Suspension bolt
(M10 or M8)

A

INSTALLATION

Ceiling

Top side

Top side

Top side

Gas pipe Ø 15.88 – Ø 12.7
Liquid pipe Ø 9.52 – Ø 6.35
Brazing Type

Liquid pipe

High pressure

gas pipe

Low pressurse

gas pipe

(Brazing Type)

CAUTION

!

HR Unit should be installed that top side is facing up. If not, it may cause failure of the
product.

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.

15

ENGLISH

After considering the indoor unit capacity,
determine the pipe sizes and cut the pipes connected to the indoor unit.

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

• Take care of no thermal damage on the valves of the HR unit.

Ø 15.88 Ø 12.7

Gas pipe

CAUTION

!

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).

(Especially packing part of valve) Wrap the valve with a wet towel when brazing it.

Cutting

Liquid Pipe

Ø 9.52 Ø 6.35

INSTALLATION

16

ENGLISH

IMPORTANT!

Please read this instruction sheet completely before installing the product.

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

!

• Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National
Building Code of Canada.

• The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and
equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal
injury and/or death.

CAUTION :

Safety Precautions

NOTE TO INSTALLING DEALER :

!

When wiring:

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

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

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when

• Ground the unit following local electrical codes.

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

• The choice of materials and installations must comply with the applicable local/national or international standards.

• Connect the power/communication wire with Double insulation or Reinforced insulation at reachable place.

When transporting:

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

When installing...

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

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

... in moist or uneven locations: Use a raised concrete pad or concrete blocks provide a solid, level foundation for the

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

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

When connecting refrigerant tubing

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Check carefully for leaks before starting the test run.

When servicing

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

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

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

WARNING

Improper installation, adjustment, alteration, service or maintenance can void the warranty.
The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid
personal injury. Use care to avoid contact with sharp or pointed edges.

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

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

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

• R-410A causes frostbite burns.

• R-410A is toxic when burned.
The Owners Instructions and Warranty are to be given to the owner or prominently displayed near the

indoor Furnace/Air Handler Unit.

WARNING

wiring. Improper connections and inadequate grounding can cause accidental injury or death.

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

damage to wall and floors.

outdoor unit. This prevents water damage and abnormal vibration.

baffle.

Provide snow vents.

wiring.

the unit being serviced.

INSTALLATION

Insulation

Insulate the connected pipes completely(all thermal insulation must comply with local
requirement)

Make sure that there is no
clearance here

Thermal insulator for
refrigerant pipe(Local supply)

Overlap with thermal
insulator for piping

Refrigerant pipe
(Local supply)

Thermal insulator for refrigerant pipe
(Local supply)

CAUTION

!

Insulate completely unconnected pipes as shown in the Figure.

Make sure that there is no clearance here

Thermal insulator for refrigerant pipe(Local supply)

Not connected pipe

17

ENGLISH

Always seal up the
tip of unused pipe by brazing

INSTALLATION

18

ENGLISH

Wiring Connection

Connect the wires to the terminals on the control board individually according to the outdoor unit
connection.

- Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
HR Unit respectively.

Master Outdoor UnitHR Unit

Terminal Block

HR Unit

L(L1) N(L2)

Terminal Block

HR Unit

AB

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

HR UNIT POWER SUPPLY

220-240 V~ 50/60 Hz

Lock nut

Conduit

COMMUNICATION LINE

(HRU-ODU)

Power Supply

(220-240 V)

High Voltage

Communi

-cation

L(L1) N(L2)

AB

INSTALLATION

20 mm

GN/YL

NORMAL
CROSS-SECTIONAL
AREA

Electric Characteristics

- Recommended circuit breaker is ELCB

- MFA is used to select the circuit breaker and ground fault circuit interrupter

- Refer to the PDB about detail electric characteristics

ELCB : Earth Leakage Circuit Breaker
MFA : Maximum Fuse Amperes(A)
PDB : Product Data Book

CAUTION

!

• The connecting cable connected to the indoor and outdoor unit should be complied with

the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).

19

ENGLISH

Rated current of appliance A. Nominal cross-sectional area mm

> 0.2 and ≤ 3
> 3 and ≤ 6
> 6 and ≤ 10
> 10 and ≤ 16
> 16 and ≤ 25
> 25 and ≤ 32
> 32 and ≤ 40
> 40 and ≤ 63

• If the supply cord is damaged, it must be replaced by a special cord or assembly available from

the manufacturer of its service agent.

WARNING

!

Loose wiring may cause the terminal to overheat or result in unit malfunction.
A fire hazard may also exist.
Therefore, be sure all wiring is tightly connected.

WARNING

!

Make sure that the screws of the terminal are free from looseness.

≤ 0.2

Tinsel cord

0.5

0.75

1.0 (0.75)

1.5 (1.0)

2.5
4
6

10

2

20

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 (2 EA, 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.

ENGLISH

HR Unit PCB

INSTALLATION

Main PCB (Master)

* Number from left in sequence for less-than-8 branch model.
** 2 port / 3 port / 4 port HR unit : Mater only

Main PCB (Slave)

Setup the switch of HR Unit

0

SW Function

DIP
SW

SW02E

(8 pin DIP SW)

INSTALLATION

Selection of the method for pipe

detection

Selection of Master/Slave Main PCB

Setting the Zoning Control

Selection of the No. of connected

branches

21

ENGLISH

Rotary

SW

Push

SW

SW01E

(4 pin DIP SW)

SW01D

(Left)

SW01C

(Right)

SW02B

(Left)

SW01B

(Right)

Selection of the valve to address

Selection of the Valve Group Control

Manual addressing of zoning indoor

Setting to address HR units

Increase in the digit of 10

Increase in the digit of 1

Main function of SW02E

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")

No.8 Use only in factory production (preset to "OFF")

units

Zoning setting ("ON")

INSTALLATION

Slave

Slave

Master

Master

22

ENGLISH

1) Selection of the method for pipe detection of an HR unit (Auto/Manual)

Auto Manual

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

Master

SW01E

Master

Master

SW01E

SW02E setting SW01E setting

Normal

control

* Master Only

INSTALLATION

23

ENGLISH

* Master Only

Zoning
control

4) Selection of the No. of connected branches

1 branch

Connected

2 branches
Connected

3 branches
Connected

4 branches
Connected

Turn the DIP switch of the
zoning branch on.

EX) Branch 1,2 are zoning

control.

5 branch

Connected

6 branch

Connected

7 branch

Connected

8 branch

Connected

* Master Only

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 type of 8 port HR unit for 4 branches HR Unit after closing the 5~8th

pipes, set the DIP switch for 4 branches HR Unit.

INSTALLATION

413

390

I.D 19.05

I.D 19.05

I.D 19.05

I.D 12.7

I.D 12.7

70

I.D 15.88

I.D 15.88

I.D 25.4

I.D 25.4

O.D 25.4

80

110

83

1

2

3

3

O.D 19.05

O.D 19.05

1

2

I.D 22.2

I.D 22.2

I.D 22.2

I.D 28.58

I.D 12.7

I.D 12.7

I.D 12.7

74

332

321

I.D 6.35

I.D 6.35

I.D 9.52(3/8)

I.D 9.52

I.D 9.52

I.D 15.88

I.D 12.7

I.D 12.7

70

I.D 25.4

110

I.D 19.05

I.D 19.05

2

3 2

3

O.D 15.88

444

421

96

I.D 15.88

I.D 22.2

I.D 22.2

I.D 22.2

O.D 15.88

I.D 19.05

I.D 9.52

24

ENGLISH

Main function of SW01D

1) Selection of the Valve Group Control

NOTE

Use the Valve Group Control when 2 branches are connected with only 1 indoor unit which
has higher capacity than 61 kBTU.

* Master Only

Valve Group

SW01D

Setting

Valve Group

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 D

No. 7,8 Valve Control 6 No. 1,2/3,4/6,7 Valve Control E

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

NOTE

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

h Y branch pipe

Models Low Pressure Gas Pipe Liquid pipe High Pressure Gas Pipe

ARBLB03321

[Unit : mm(inch)]

SW01D

Setting

INSTALLATION

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 sequentially increasing numbers

starting from '0'.
Maximum 16 HR Units can be installed.

25

ENGLISH

Ex) Installation of 3 HR units

* Master Only

AB AB AB

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 address 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 control.

26

SW02B

SW01B
SW01C

0

SW01E

ENGLISH

INSTALLATION

S/W No. Setup

No.1

No.2

No.3

No.4

SW02B Increase in the digit of 10 of valve address

SW01B Increase in the last digit of valve address

* Use for Zoning setting

SW01C Manual addressing of zoning indoor units

1) Normal setting (Non-Zoning setting)

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

Manual addressing of valve #1 (Master) / #5
(Slave)

Manual addressing of valve #2 (Master) / #6
(Slave)

Manual addressing of valve #3 (Master) / #7
(Slave)

Manual addressing of valve #4 (Master) / #8
(Slave)

Master

ON

OFF

SW01E

SW #1 On : Select Valve #1

Slave

ON

OFF

SW01E

SW #2 On : Select Valve #6

Master

SW02B SW01B

Input the central control

address of Indoor unit

Slave

SW02B SW01B

Input the central control

address of Indoor unit

Master

ON

OFF

SW01E

SW #1 Off : Finish Valve #1

Slave

ON

OFF

SW01E

SW #2 Off : Finish Valve #6

INSTALLATION

2) Zoning setting

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.

ex) Manual pipe detection of Valve #5 with three zoning indoor units, #6 without zoning unit.

27

ENGLISH

Slave

ON

OFF

SW01E

SW #1 On : Select Valve #5

Slave

SW01C

SW02B

indoor unit, input the central

control address of indoor unit.

Slave

ON

OFF

SW #2 On : Select Valve #6

2

SW01B

SW01E

Slave

SW01C

SW02B SW01B

After selecting No.1 zoning

indoor unit, input the central

control address of indoor unit.

Slave

SW01C

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

Slave

SW02B SW01B

Input the central control

address of Indoor unit

0

0

Slave

SW01C

SW02B

After selecting No.2 zoning

indoor unit, input the central

control address of indoor unit.

Slave

ON

OFF

SW #1 Off : Finish Valve #5

Slave

ON

OFF

SW #2 Off : Finish Valve #6

1

SW01B

SW01E

SW01E

COIL EXCHANGING METHOD

28

ENGLISH

COIL EXCHANGING METHOD

1 Remove the 2 securing screws.

Remove the cover by pulling on the bottom
of the cover and lifting up.

2 Remove the 6 securing screws.

Lift up and pull on the cover.

3 Lift up and pull on the insulator. 4 Exchange the coil.

NOTE

Be sure that system power off before exchanging the coil.
Check the position of the valve coil with the label attached on the cover inside when
abnormal noise is heard loudly during operation.

Position label of the valve coil of a type of 8 port HR unit

JOINT METHOD OF HR UNIT

JOINT METHOD OF HR UNIT

Joint Method is required when use indoor unit that exceed 61 kBtu is installed. In Joint Method,
two neighboring outlets of one HR unit are linked by Y branch pipe and connected to one indoor
unit.

st

1

nd

2 HR Unit

HR Unit

29

ENGLISH

4 3 2 1

BG

(38 k) (92 k)

B8

4 3 2 1

B8

(48 k)BH(72 k)

NOTICE

1. A connection to un-neighboring pipes is forbidden. Do not link more than 2 outlets.

st

HR Unit

1

4 3 2 1

B8

st

HR Unit

1

4 3 2 1

B8

2. The B8 unit, which has the largest capacity, must be connected to the 1st and 2nd outlets
of the 1st HR unit. Other B8 units can be connected to any two neighboring outlets within
one HR unit.

nd

2

HR Unit

4 3 2 1

nd

HR Unit

2

4 3 2 1

st

HR Unit

1

4 3 2 1

B8

(92 k) (38 k)

BG

nd

2

HR Unit

4 3 2 1

BH

B8

(72 k)(34 k)

JOINT METHOD OF HR UNIT

30

ENGLISH

Limiting concentration

Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration
shall be described in the unit of kg/m3(Freon gas weight per unit air volume) for facilitating
calculation.

Limiting concentration: 0.44 kg/m3(R410A)

Refrigerant concentration

(kg/m3)

Total amount of replenished refrigerant in refrigerant facility (kg)

=

Capacity of smallest room where indoor unit is installed (m3)