LG HN1616 INSTALLATION INSTRUCTIONS

www.lg.com

Air-to-Water Heat Pump

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.

INSTALLATION MANUAL

AIR
CONDITIONER

P/NO : MFL68681805

For more information, Refer to the CD or LG Web site (www.lg.com).

[

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

ENGLISH

ITALIANO

ESPAÑOL

FRANÇAIS

DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

Air-to-Water Heat Pump Installation Manual

TABLE OF CONTENTS

PREFACE.............................................................................................................................5

1. SAFETY PRECAUTION...................................................................................................6

WARNING.....................................................................................................................................6

INSTALLATION WARNING .....................................................................................................6

OPERATION WARNING .........................................................................................................8

CAUTION ....................................................................................................................................11

INSTALLATION CAUTION ....................................................................................................11

OPERATION CAUTION.........................................................................................................11

2. INSTALLATION PART ...................................................................................................12

INDOOR UNIT BOX....................................................................................................................12

OUTDOOR UNIT BOX................................................................................................................12

3. GENERAL INFORMATION ............................................................................................13

MODEL INFORMATION..............................................................................................................13

TYPICAL INSTALLATION EXAMPLE .........................................................................................15

CASE 1..................................................................................................................................15

CASE 2..................................................................................................................................16

CASE 3 .................................................................................................................................17

CYCLE DIAGRAM ......................................................................................................................18

WATER CYCLE .....................................................................................................................19

PARTS AND DIMENSIONS ........................................................................................................21

INDOOR UNIT (EXTERNAL) ................................................................................................21

INDOOR UNIT (INTERNAL)..................................................................................................22

OUTDOOR UNIT (EXTERNAL) ............................................................................................23

CONTROL PARTS ......................................................................................................................26

CONTROL BOX : INDOOR UNIT..........................................................................................26

CONTROL PANEL ................................................................................................................27

WIRING DIAGRAM : INDOOR AND OUTDOOR (INCL. FIELD WIRING)............................28

4. INSTALLATION OF OUTDOOR UNIT ...........................................................................30

CONDITIONS WHERE OUTDOOR UNIT IS INSTALLED ..........................................................30

DRILL A HOLE IN THE WALL.....................................................................................................30

INSTALLATION AT SEASIDE......................................................................................................31

SEASONAL WIND AND CAUTIONS IN WINTER.......................................................................31

5. INSTALLATION OF INDOOR UNIT ...............................................................................32

CONDITIONS WHERE INDOOR UNIT IS INSTALLED ..............................................................32

GENERAL CONSIDERATIONS ............................................................................................32

SERVICE SPACE ..................................................................................................................32

2 Air-to-Water Heat Pump

MOUNTING TO WALL ..........................................................................................................33

WATER VOLUME AND WATER PUMP CAPACITY..............................................................34

PRESSURE DROP ...............................................................................................................36

WATER VOLUME AND EXPANSION VESSEL PRESSURE ................................................37

WATER QUALITY .................................................................................................................38

FROST PROTECTION..........................................................................................................38

6. PIPING AND WIRING FOR OUTDOOR UNIT ...............................................................39

REFRIGERANT PIPING .............................................................................................................39

CONSTRAINTS IN PIPE LENGTH AND ELEVATION ..........................................................39

PREPARATION FOR PIPING ...............................................................................................40

CONNECTING PIPE TO INDOOR UNIT ..............................................................................41

CONNECTING PIPE TO OUTDOOR UNIT ..........................................................................41

ELECTRICAL WIRING................................................................................................................44

WIRE SPECIFICATION.........................................................................................................44

CIRCUIT BREAKER SPECIFICATION .................................................................................45

WIRING PROCEDURE FOR POWER CABLE AND CONNECTING CABLE.......................46

FINALIZING ................................................................................................................................47

PIPE FORMING ....................................................................................................................47

LEAKAGE TEST AND EVACUATION .........................................................................................48

PREPARATION .....................................................................................................................48

LEAKAGE TEST....................................................................................................................48

EVACUATION........................................................................................................................49

7. PIPING AND WIRING FOR INDOOR UNIT ...................................................................50

WATER PIPING AND WATER CIRCUIT CONNECTION............................................................50

GENERAL CONSIDERATIONS ............................................................................................50

WATER PIPING AND WATER CIRCUIT CONNECTION ......................................................50

WATER CHARGING .............................................................................................................52

PIPE INSULATION ................................................................................................................52

ELECTRICAL WIRING................................................................................................................53

GENERAL CONSIDERATION...............................................................................................53

TERMINAL BLOCK INFORMATION .....................................................................................54

CONNECTING WITH OUTDOOR UNIT ...............................................................................56

ELECTRIC HEATER WIRING ...............................................................................................56

8. ACCESSORIES INSTALLATION ...................................................................................57

ACCESSORIES SUPPORTED BY LG Electronics...............................................................57

ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..............................................57

BEFORE INSTALLATION ...........................................................................................................58

THERMOSTAT ............................................................................................................................58

GENERAL INFORMATION ...................................................................................................58

HOW TO WIRE THERMOSTAT ............................................................................................59

FINAL CHECK.......................................................................................................................60

Installation Manual 3

ENGLISH

SANITARY WATER TANK AND SANITARY WATER TANK KIT/SOLAR THERMAL KIT............61

GENERAL INFORMATION ...................................................................................................61

HOW TO INSTALL SANITARY WATER TANK ......................................................................62

HOW TO INSTALL SANITARY WATER TANK KIT................................................................63

HOW TO WIRE SANITARY WATER TANK HEATER............................................................65

HOW TO INSTALL SOLAR THERMAL KIT...........................................................................66

DRY CONTACT...........................................................................................................................66

REMOTE TEMPERATURE SENSOR .........................................................................................66

3WAY VALVE ..............................................................................................................................67

HOW TO WIRE 3WAY VALVE...............................................................................................67

FINAL CHECK.......................................................................................................................67

2WAY VALVE ..............................................................................................................................68

GENERAL INFORMATION ...................................................................................................68

HOW TO WIRE 2WAY VALVE...............................................................................................68

FINAL CHECK.......................................................................................................................68

CONDITIONS IF ACCESSORIES ARE INSTALLED ..................................................................69

THERMOSTAT ......................................................................................................................69

REMOTE AIR TEMPERATURE SENSOR ............................................................................69

SANITARY WATER TANK AND SANITARY WATER TANK KIT / SOLAR THERMAL KIT....70

2WAY(3WAY) VALVE ............................................................................................................72

9. SYSTEM SET-UP...........................................................................................................73

DIP SWITCH SETTING...............................................................................................................73

GENERAL INFORMATION ...................................................................................................73

DIP SWITCH INFORMATION ...............................................................................................74

INSTALLER SETTING ................................................................................................................77

HOW TO ENTER INSTALLER SETTING MODE ..................................................................77

SUMMARY ............................................................................................................................78

COMMON SETTING .............................................................................................................84

TEMPERATURE RANGE SETTING .....................................................................................85

TEMPERATURE CONTROL PARAMETER SETTING .........................................................87

10. CHECK POINTS, MAINTENANCE AND TROUBLESHOOTING................................92

CHECK LIST BEFORE STARTING OPERATION.....................................................................92

MAINTENANCE.........................................................................................................................93

TEST RUN.................................................................................................................................93

CHECK BEFORE TEST RUN ..............................................................................................93

TROUBLESHOOTING...............................................................................................................94

TROUBLESHOOTING FOR PROBLEM WHILE OPERATION.............................................94

TROUBLESHOOTING FOR ERROR CODE ........................................................................95

AIRBORNE NOISE EMISSION .................................................................................................96

LIMITING CONCENTRATION ...................................................................................................96

4 Air-to-Water Heat Pump

Preface

Installation Manual 5

ENGLISH

Preface

This installation manual is to present information and guide about understanding, installing,
and checking .
Your careful reading before installation is highly appreciated to make no mistake and to prevent potential risks.
The manual is divided into nine chapters. These chapters are classified according to installation procedure.
See the table below to get summarized information.

• Warning and Caution concerned with safety.

• This chapter is directly related with human safety. We strongly recommend
reading this chapter carefully.

• Items Inside product Box

• Before starting installation, please make it sure that all parts are found
inside the product box.

• Fundamental knowledge about

• Model identification, accessories information, refrigerant and water cycle dia­gram, parts and dimensions, electrical wiring diagrams, etc.

• This chapter is important to understand

• Installation about the outdoor unit.

• Installation location, constraints on installation site, etc

• Installation about the indoor unit.

• Installation location, constraints on installation site, etc

• Constrains when accessories are installed

• How to perform piping (for refrigerant) and wiring at the outdoor unit.

• Refrigerant pipe connection between the indoor unit and the outdoor unit.

• Electrical wiring at the outdoor unit.

• How to perform piping (for water) and wiring at the indoor unit.

•

Water pipe connection between the indoor unit and pre-built under floor water loop pipe.

• Electrical wiring at the indoor unit.

• System set-up and configuration.

• As many control parameters of is adjustable by control panel,
deep understanding about this chapter is required to secure the operation
flexibility of

• For more detailed information, please read the separate operation manual to
use control panel and adjust control parameters.

• Information about supported accessories

• Specification, Constraints, and wiring are described.

•

Before purchasing accessories, please find supported specification to buy proper one.

• Test operation and check point while test running.

• Check points before starting operation are explained.

•

Troubleshooting, maintenance, and error code list are presented to correct problems.

Chapters Contents

Chapter 1

Chapter 2

Chapter 4

Chapter 3

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter 10

REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.
TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.

Safety Precautions

6 Air-to-Water Heat Pump

1. Safety Precautions

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

n Be sure to read before installing the unit.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified

by the following indications.

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

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

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

WARNING

Be sure not to do.

Be sure to follow the instruction.

Do not use a defective
or underrated circuit
breaker. Use this appli­ance on a dedicated
circuit.

• There is risk of fire or
electric shock.

For electrical work,
contact the dealer,
seller, a qualified elec­trician, or an Author­ized Service Center.

• There is risk of fire or
electric shock.

Always ground the unit.

• There is risk of fire or
electric shock.

Install the panel and
the cover of control
box securely.

• There is risk of fire or
electric shock.

Always install a dedi­cated circuit and
breaker.

• Improper wiring or instal­lation may cause fire or
electric shock

Use the correctly rated
breaker or fuse.

• There is risk of fire or
electric

n Installation

Safety Precautions

Installation Manual 7

ENGLISH

Do not install the water
pipe system as Open
loop type.

• It may cause failure of
unit.

Use a vacuum pump or
inert (nitrogen) gas
when doing leakage
test or purging air. Do
not compress air or
oxygen and do not use
flammable gases.

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

Make sure the con­nected condition of
connector in product
after maintenance.

• Otherwise, it may cause
product damage.

For installation, always
contact the dealer or an
Authorized Service
Center.

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

Do not install the unit
on a defective installa­tion stand.

• It may cause injury, acci­dent, or damage to the
unit.

Be sure the installation
area does not deterio­rate with age.

• If the base collapses, the
unit could fall with it,
causing property dam­age, unit failure, and per­sonal injury.

Do not modify or ex­tend the power cable.

• There is risk of fire or
electric shock.

Do not install, remove,
or reinstall the unit by
yourself (customer).

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

For antifreeze, always
contact the dealer or an
authorized service cen­ter.

• Almost the antifreeze is
a toxic product.

Do not touch leaked refrigerant directly.

• There is risk of frostbite.

8 Air-to-Water Heat Pump

Safety Precautions

Take care to ensure
that power cable could
not be pulled out or
damaged during opera­tion.

• There is risk of fire or
electric shock.

Do not place anything
on the power cable.

• There is risk of fire or
electric shock.

Do not plug or unplug
the power supply plug
during operation.

• There is risk of fire or
electric shock.

Do not touch (operate)
the unit with wet hands.

• There is risk of fire or
electric shock.

Do not place a heater
or other appliances
near the power cable.

• There is risk of fire or
electric shock.

Do not allow water to
run into electric parts.

• There is risk of fire, fail­ure of the unit, or electric
shock.

n Operation

Do not store or use
flammable gas or com­bustibles near the unit.

• There is risk of fire or
failure of unit.

Do not use the unit in a
tightly closed space for
a long time.

• It may cause damage to
the unit.

When flammable gas
leaks, turn off the gas
and open a window for
ventilation before turn­ing the unit on.

• There is risk of explosion
or fire.

If strange sounds, or
small or smoke comes
from unit, turn the
breaker off or discon­nect the power supply
cable.

• There is risk of electric
shock or fire.

Stop operation and
close the window in
storm or hurricane. If
possible, remove the
unit from the window
before the hurricane ar­rives.

• There is risk of property
damage, failure of unit,
or electric shock.

Do not open the front
cover of the unit while
operation. (Do not
touch the electrostatic
filter, if the unit is so
equipped.)

• There is risk of physical
injury, electric shock, or
unit failure.

Installation Manual 9

ENGLISH

Safety Precautions

Turn the main power on
6 hours ago before the
product starting opera­tion.

• Otherwise, it may cause
compressor damage.

Do not touch electric
parts for 10 minutes
after main power off.

• There is risk of physical
injury, electric shock.

The inside heater of
product may operate
during stop mode. It is
intended to protect the
product.

Be careful that some
part of the control box
are hot.

• There is risk of physical
injury or burns.

When the unit is
soaked (flooded or sub­merged), contact an
Authorized Service
Center.

• There is risk of fire or
electric shock.

Be cautious that water
could not be poured to
the unit directly.

• There is risk of fire, elec­tric shock, or unit dam­age.

Do not touch any elec­tric part with wet
hands. you should be
power off before touch­ing electric part.

• There is risk of electric
shock or fire.

Do not touch refriger­ant pipe and water pipe
or any internal parts
while the unit is operat­ing or immediately after
operation.

• There is risk of burns or
frostbite, personal injury.

If you touch the pipe or
internal parts, you
should be wear protec­tion or wait time to re­turn to normal
temperature.

• Otherwise , it may cause
burns or frostbite, per­sonal injury.

10 Air-to-Water Heat Pump

For installation, always
contact the dealer or an
Authorized Service
Center.

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

If the unit is not used
for long time, we
strongly recommend
not to switch off the
power supply to the
unit.

• There is risk of water
freezing.

Ventilate the unit from
time to time when oper­ating it together with a
stove, etc.

• There is risk of fire or
electric shock.

Turn the main power off
when cleaning or main­taining the unit.

• There is risk of electric
shock.

Take care to ensure
that nobody could step
on or fall onto the unit.

• This could result in per­sonal injury and unit
damage.

Safety Precautions

Installation Manual 11

ENGLISH

n Installation

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

• Low refrigerant levels
may cause failure of unit.

Keep level even when
installing the unit.

• To avoid vibration or
water leakage.

Use two or more people
to lift and transport the
unit.

• Avoid personal injury.

n Operation

Do not use the unit for
special purposes, such
as preserving foods,
works of art, etc.

• There is risk of damage
or loss of property.

Use a soft cloth to
clean. Do not use
harsh detergents, sol­vents, etc.

• There is risk of fire, elec­tric shock, or damage to
the plastic parts of the
unit.

Do not step on or put
anything on the unit.

• There is risk of personal
injury and failure of unit.

CAUTION

Use a firm stool or ladder when
cleaning or maintaining the unit.

• Be careful and avoid personal injury.

Do not turn on the breaker or power
under condition that front panel cab­inet, top cover, control box cover are
removed or opened.

• Otherwise it may cause fire, electric
shock, explosion or death

Safety Precautions

12 Air-to-Water Heat Pump

2. Installation Part

Thank you for choosing LG Electronics Air-to-Water Heat Pump
Before starting installation, please make it sure that all parts are found inside the product box.

INDOOR UNIT BOX

Indoor unit 1

1

1

Shut-off valve 2

1

1

Item Image Quantity Item Image Quantity

Installation

Manual

Installation

plate

Owner's Man-

ual

Installation

Sheet

Outdoor Unit

U4

Chassis

(Product heating capacity :

5kW, 7kW, 9kW)

Item Image Quantity

OUTDOOR UNIT BOX

1

1

1

Outdoor Unit

U3 Chassis

(Product heating capacity :

12kW, 14kW, 16kW)

Outdoor Unit

UE Chassis

(Product heating capacity : 3kW)

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.

INSTALLATION MANUAL

AIR
CONDITIONER

www.lg.com

Please read this manual carefully before operating
your set and retain it for future reference.

OWNER’S MANUAL

AIR
CONDITIONER

Installation Part

Installation Manual 13

ENGLISH

General Information

3. General Information

Model Information

With advanced inverter technology, is suitable for applications like under floor heating,
under floor cooling, and hot water generation. By Interfacing to various accessories user can cus­tomize the range of the application.

In this chapter, general information of is presented to identify the installation proce­dure. Before beginning installation, read this chapter carefully and find helpful information on installa­tion.

Model number nomenclature

A H

A H N W 0 9 A 0 6 A 2

—

W 0 9 6 A 2

Series Number

Function

A : General heating heat pump
H : Domestic Hot heating only
T : High temperature heating heat pump

Electrical ratings

6 : 1 phase 220-240V AC 50Hz 8 : 3 phase 380-415V AC 50Hz

Heating Capacity (kW)

03 : 3kW 05 : 5kW 07 : 7kW 09 : 9kW 12 : 12kW
14 : 14kW 16 : 16kW

Model Type

W : Inverter Heat Pump H : Heat Pump

Classification

N : Indoor Unit U : Outdoor Unit – : Set

Air-to-Water Heat Pump for R410A

1. Temperature control

2. Pressure control

Series Number

Function

A : General heating heat pump
H : Domestic Hot heating only
T : High temperature heating heat pump

Heater Capacity (kW)

04 : 4kW 06 : 6kW 09 : 9kW

Heater Electrical ratings

6 : 1 phase 220-240V AC 50Hz
8 : 3 phase 380-415V AC 50Hz
A : 3 phase 220V AC 50Hz

Heating Capacity (kW)

03 : 3kW 09 : 9kW 16 : 16kW

Model Type

W : Inverter Heat Pump H : Heat Pump

Classification

N : Indoor Unit U : Outdoor Unit — : Set

Air-to-Water Heat Pump for R410A

1. Temperature control

2. Pressure control

14 Air-to-Water Heat Pump

General Information

*1 : tested under Eurovent Heating condition

(water temperature 30°C ’ 35°C at outdoor ambient temperature 7°C / 6°C)

*2 : tested under Eurovent Cooling condition

(water temperature 23°C ’ 18°C at outdoor ambient temperature 35°C / 24°C)

*

*3 : All appliances were tested at atmospheric pressure.

Model name and related information

Model Name

Built-In Electric

Heater(kW)

Power Source

(Electric Heater)

Capacity

Power Source

(Unit)

Outdoor Unit Indoor Unit Heating(kW)*1Cooling(kW)

*1

AHUW036A2 AHNW03604A2 4(2+2) 220-240 V ~50Hz 3 3

220-240 V ~50Hz

AHUW056A2 AHNW09604A2 4(2+2) 220-240V ~50Hz 5 5

AHUW076A2 AHNW09604A2 4(2+2) 220-240V ~50Hz 7 7

AHUW096A2 AHNW09604A2 4(2+2) 220-240V ~50Hz 9 9

AHUW126A2 AHNW16606A2 6(3+3) 220-240V ~50Hz 12 12

AHUW146A2 AHNW16606A2 6(3+3) 220-240V ~50Hz 14 14

AHUW166A2 AHNW16606A2 6(3+3) 220-240V ~50Hz 16 16

AHUW128A2 AHNW16809A2 9(3+3+3) 380-415V ~50Hz 12 12

380-415V ~50Hz AHUW148A2 AHNW16809A2 9(3+3+3) 380-415V ~50Hz 14 14

AHUW168A2 AHNW16809A2 9(3+3+3) 380-415V ~50Hz 16 16

General Information

Installation Manual 15

ENGLISH

If is installed with pre-existing boiler, the boiler and should not be oper­ated together. If entering water temperature of is above 55°C, the system will stop
operation to prevent mechanical damage of the product. For detailed electric wiring and water pip­ing, please contact authorized installer.

Some installation scenes are presented for example. As these scenes are conceptual figures, in­staller should optimize the installation scene according to the installation conditions.

CAUTION

CASE 1:

Connecting Heat Emitters for Heating and Cooling

(Under floor loop, Fan Coil Unit, and Radiator)

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loopFan coil unit

Radiator

High Temperature Room Thermostat(Field supply)

2way valve
(Field supply)

By-pass valve(Field supply)

Low Temperature

Shut-off valve

Typical Installation Example

Note:

• Room thermostat

- Type of thermostat and specification should be complied with chapter 4 and chapter 7 of
installation manual.

• 2way valve

- It is important to install 2way valve to prevent dew condensation on the floor and radiator while

cooling mode.

- Type of 2way control valve and specification should be complied with chapter 4 and chapter 7 of
installation manual.

- 2way valve should be installed at the supply side of the collector.

• By-pass valve

- To secure enough water flow rate, by-pass valve should be installed at the collector.

- By-pass valve should guarantee minimum water flow rate in any case. Minimum water flow rate is

described in water pump characteristics curve.

CASE 2:

Connecting Sanitary Water Tank

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loopFan coil unit

Sanitary

water

tank

Hot water

City water

Radiator

High Temperature

Room Thermostat(Field supply)

2way valve
(Field supply)

3way valve
(Field supply)

By-pass valve(Field supply)

Low Temperature

Shut-off valve

Note:

• Sanitary water tank

- It should be equipped with internal electric heater to generate sufficient heat energy in very cold
season.

• 3way valve

- Type of 3way valve and specification should be complied with chapter 4 and chapter 7 of

installation manual.

General Information

16 Air-to-Water Heat Pump

General Information

CASE 3: Connecting Solar thermal system

Solar heat source

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loopFan coil unit

Sanitary

water

tank

Hot water

City water

Radiator

High Temperature

Room Thermostat(Field supply)

2way valve
(Field supply)

3way valve
(Field supply)

By-pass valve(Field supply)

Low Temperature

Shut-off valve

Pump(Field supply)

Note:

• Sanitary water tank

- It should have additional indirect heat exchanger to utilize heat energy by solar thermal system.

• Pump

- Maximum power consumption of pump should be less than 0.25kW.

Installation Manual 17

ENGLISH

18 Air-to-Water Heat Pump

Cycle Diagram

Description

General Information

Category Symbol Meaning

PCB

Connector

Remarks

Indoor

Unit

Th1 Remote air temperature sensor CN_ROOM

- Optional accessory (being sold separately)

- Not shown in diagram

Th2 Inlet evaporator temperature sensor CN_PIPE

- Meaning is expressed based on Cooling
mode.

Th3 Outlet evaporator temperature sensor CN_PIPE/O

Outdoor

Unit

Th4 Compressor-suction pipe temperature sensor CN_TH3

- Th4 and Th5 are connected at 4 pin type con­nector CN_TH3.

Th5 Compressor-discharge pipe temperature sensor CN_TH3

Th6 Condenser temperature sensor CN_TH2

- Description is expressed based on Cooling
mode

- Th6 and Th7 are connected at 4 pin type
connector CN_TH2

Th7 Outdoor air temperature sensor CN_TH2

Th8 Condenser middle temperature sensor CN_TH3

- Th8 is connected at 4 pin type connector
CN_TH3

EEV Electronic Expansion Valve CN_LEV1

INDOOR UNIT OUTDOOR UNIT

LIQUID SIDE

Th2

Indoor Unit
Plate Heat
Exchanger

Th3

Th1

(Accessories)

Service Valve

GAS SIDE

Service Valve

3-Way

3-Way

Th4

Accumulator

EEV

Pressure
sensor

COMPRESSOR

Th6

Th7

Th8
Outdoor Unit
Heat Exchanger

Reversing Valve

Th5

COOLING
HEATING

General Information

Water cycle

Sanitary water tan

k is installed

(Sanitary water tan

k kit is necessary)

Solar thermal syst

em is connected

(Solar thermal kit i

s necessary)

Basic installation

(IDU + ODU)

Solar

Thermal

Componets

Fan

Coil

Unit

Underfloor

Heating

Radiator

Installation Manual 19

ENGLISH

General Information

Description

20 Air-to-Water Heat Pump

Category Symbol Meaning PCB Connector Remarks

Indoor Unit

Water

Heating

Solar

Heating

TH1

TH2

TH3
TH4
TH5

F/S

E/HT

W_PUMP1

EXP/TANK

TH8

CTR/PNL

2WAY V/V_1

W/TANK

B/HT

3WAY V/V_1

CITY WATER

SHOWER

TH6

TH7

3WAY V/V_2

W_PUMP/2

SOLAR THER-

MAL SYSTEM

Refrigerant temperature sensor
(Gas side)

Refrigerant temperature sensor
(Liquid side)

Entering Water temperature sensor
Interim Water temperature sensor
Leaving Water temperature sensor
Flow Switch

Electric Heater

Internal Water Pump

Expansion Tank

Remote Air temperature sensor

Control Panel (or

‘Remote Controller’)

To control water flow for Fan Coil Unit

Sanitary Water Tank

Electric Heater

- Flow control for water which is leaving from
indoor unit.

- Flow direction switching between under­floor and water tank

Water to be heated by Indoor unit and B/HT
of W/TANK

Water supplied to end-user
W/TANK water temperature sensor

Solar-heated water temperature sensor

- Flow control for water which is heated and
circulated by SOLAR THERMAL SYSTEM.

- Flow direction switching between SOLAR
THERMAL SYSTEM and W/TANK

External Water Pump

- This system can include following compo­nents : Solar panel, Sensors, Thermostats,
Interim heat exchanger, Water pump, etc.

- To utilized hot water heated by SOLAR
THERMAL SYSTEM, end-user must by LG
AWHP Solar-Kit.

CN_PIPE/OUT

CN_PIPE

CN_TH3

CN_FLOW1

CN_E/HEAT(A)
CN_E/HEAT(B)

CN_W/PUMP(A)

(no connector)

CN_ROOM

CN_REMO

CN_2WAY(A)

(no connector)

CN_B/HEAT(A)

CN_3WAY(A)

(no connector)

(no connector)

CN_TH4

CN_3WAY(B)

CN_W/PUMP(B)

(no connector)

- Meaning is expressed based on Cooling
mode.

- TH3, TH4, and TH5 are connected at 6 pin
type connector CN_TH3.

- Heating capacity is divided into two level :
partial capacity by E/HEAT(A) and full
capacity by E/HEAT(A) + E/HEAT(B).

- Operating power(230V AC 50Hz) of
E/HEAT(A) and E/HEAT(B) are supplied by
external power source via relay connector
and ELB.

- Operating power(230V AC 50Hz) of internal
water pump is supplied by the connector.

- Absorb volume change of heated water,

- Optional accessory (sold separately)

- Model : PQRSTA0

- Pre built-in at indoor unit

rd

party accessory and Field installation

- 3
(sold separately)

- 2 wire NO or NC type 2way valve is
supported.

rd

party accessory and Field installation

- 3
(sold separately)

- Generating and storing sanitary hot water by
AWHP or built-in electric heater-

rd

- 3

party accessory and Field installation

(usually built-in at W/TANK)

- Supplying additional water heating capacity.

rd

- 3

party accessory and Field installation

(sold separately)

- SPDT type 3way valve is supported.

- Field installation

- Field installation

- TH6 and TH7 are connected at 4 pin type
connector CN_TH4.

- TH6 is a part of sanitary water tank kit.
(Model:PHLTA)

- TH7 is a part of solar thermal kit
(Model:PHLLA)

rd

- 3

party accessory and Field installation

(sold separately)

- SPDT type 3way valve is supported.

rd

- 3

party accessory and Field installation
(sold separately)
If water pump of SOLAR THERMAL SYSTEM

­ is incapableof circulation,external water pump
can be used.

- 3rd party accessory and Field installation
(sold separately)

General Information

Parts and Dimensions

Indoor unit(External)

Description

(unit:mm)

Installation Manual 21

ENGLISH

490

850

315

315.3

474

No Name Remarks

1 Door Control panel is shown after this door is opened.
2 Handle Used to cover or uncover the front case

General Information

Description

Indoor unit(Internal)

No Name Remarks

1 Refrigerant Pipe Ø15.88mm(5~16kW), Ø12.7mm (3kW)
2 Refrigerant Pipe Ø9.52mm(5~16kW), Ø6.35mm (3kW)
3 Entering Water Pipe Male PT 1 inch

4 Leaving Water Pipe Male PT 1 inch
5 Control Panel Built-in Remote Controller
6 Water Pump Max Head 9 / 7 / 6 m
7 Safety Valve Open at water pressure 3 bar

8

8'

T

Thermal switch

hermal switch

Cut-off power input to electric heater at 90 °C (manual return at 55C)
(1Ø Electric Heater is applied)

Cut-off power input to electric heater at 90 °C (manual return at 55 C)
(3Ø Electric Heater is applied)

9 Control Box PCB and terminal blocks

Minimum operation range at 12 LPM.(5~9kW)
Minimum operation range at 15 LPM.(12~16kW)

※ 3kW IDU has not a flow switch.
11 Plate Heat Exchanger Heat exchange between refrigerant and water
12 Pressure Gage Indicates circulating water pressure
13 Expansion Tank Absorbing Volume change of heated water
14 Air Vent Air purging when Charging water

15 Electric Heater

Please refer to the below Page

‘Model name and related information’
16
17

Strainer
Shut-off valve

18

Carrying handle

Filtering and stacking particles inside circulating water

To drain or to block water when pipe connecting

To carry the product

Flow Switch10

(unit:mm)

22 Air-to-Water Heat Pump

848

474

305

66

52

109

474

39

75.11008176

General Information

Outdoor unit(External)

Description

Product Heating

Capacity :

12kW,14kW,16kW

U3 Chassis

(unit:mm)

Installation Manual 23

ENGLISH

Supporter

No Name

1
2
3

Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill

490

Description

General Information

Product Heating

Capacity : 3kW

UE Chasis

(unit:mm)

24 Air-to-Water Heat Pump

No Name

1
2
3

Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill

General Information

Description

Product Heating

Capacity : 5kW,7kW,9kW

U4 Chassis

(unit:mm)

Installation Manual 25

ENGLISH

Supporter

No Name

1
2
3

Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill

General Information

Control Parts

Control Box : Indoor Unit

Description

1Ø Electric Heater 3Ø Electric Heater

26 Air-to-Water Heat Pump

7 7

8

6

5 4

3 2

6

10

8

No Name Remarks

1
2

3

4
5

6
7

8
9

10

Terminal blocks
Unit ELB
Water tank heater
ELB(optional)
Magnetic switch
Magnetic switch
(optional for water tank heater)
Main PCB
Dry ContactSupporter
Magnet Contact
Unit MCCB
Water tank heater
MCCB(optional)

The terminal blocks allow easy connection of field wiring
The ELB protects the unit against overload or short circuit
The ELB protects the water tank heater in sanitary water tank
against overload or short circuit

The main PCB(Printed Circuit Board) controls the functioning of the unit
Supporter to install Dry Contact(sold separately)

The MCCB protects the unit against overload
The MCCB protects the water tank heater in sanitary water tank
against overload

5

1

9

8

1

-

-

General Information

Control Panel

WATER

TEMP

OPER

HEATING

MODE

Wiring Diagram : Indoor Unit

- Refer to the wiring diagram inside the control box.

Circuit Diagram : Indoor Unit

- Refer to the circuit diagram inside the front panel.

Wiring Diagram : Outdoor Unit

- Refer to the attached wiring diagram in the outdoor unit.

Installation Manual 27

ENGLISH

No Name

1 Display
2 Change Temperature Button
3 Water Heating Enable / Disable Button
4 Power Button
5 Operation Mode Selection Button
6 Silent Mode On / Off Button
7 Temperature Setting Mode Button
8 Temperature View Mode Button
9 Function Setting Button

10 Programming Button

11 Direction Button (Up, Down, Left, Right)
12 Set / Clear button
13 ESC Button
14 Pressure gage

ڸ

ۀ
ڿ

ھ
ڽ

ہ
ۂ

ۃ

ۄ

TEMP

WATER

HEATING

OPER

MODE

ڹ
ں

ڻ

ڼ

14

2

3

1

0

4

General Information

Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 1Ø, Outdoor : 1Ø)

28 Air-to-Water Heat Pump

General Information

Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Ø 380-415V, Outdoor : 3Ø)

Installation Manual 29

ENGLISH

Installation of Outdoor Unit

4. Installation of Outdoor Unit

The outdoor unit of is installed outside to exchange heat with ambient air. Therefore, it
is important to secure proper space around the outdoor unit and care for specific external conditions.

This chapter presents a guide to install the outdoor unit, make a route to connect with the indoor, and
what to do when installed around seaside.

• If a sunroof is built over the unit to prevent di­rect sunlight or rain exposure, make sure that
heat radiation from the heat exchanger is not
restricted.

• Ensure that the spaces indicated by arrows
around front, back and side of the unit.

• Do not place animals and plants in the path of
the warm air.

• Take the weight of the outdoor unit into account
and select a place where noise and vibration
are minimum.

• Select a place so that the warm air and noise
from the outdoor unit do not disturb neighbors.

Conditions where Outdoor Unit is Installed

300

Fence or

obstacles

700

300

600

Sunroof

• If making a hole to the wall is required to con­nect pipe between the indoor unit and the out­door unit, please follow below descriptions.

- Drill the piping hole with a ø70mm hole core
drill.

- Piping hole should be slightly slant to the out­door side to prevent raindrop into indoor side.

Drill a Hole in the Wall

Minimum service space (unit:mm)

30 Air-to-Water Heat Pump

Wall

Indoor Outdoor

5~7mm