LG | HU161.U33 | Owner's Manual | LG HU161.U33 Owner's manual

LG HU161.U33 Owner's manual
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 1
ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
INSTALLATION MANUAL
DEUTSCH
AIR-TO-WATER
HEAT PUMP
ΕΛΛΗΝΙΚΆ
ČEŠTINA
LIMBA ROMÂNĂ
www.lg.com
P/NO : MFL68681810
POLSKI
Original instruction
[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
For more information, Refer to the CD or LG Web site (www.lg.com).
NEDERLANDS
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.
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 2
Air-to-Water Heat Pump Installation Manual
TABLE OF CONTENTS
PREFACE.............................................................................................................................5
1. SAFETY PRECAUTION...................................................................................................6
WARNING .....................................................................................................................................6
INSTALLATION WARNING .....................................................................................................6
OPERATION WARNING .........................................................................................................7
CAUTION ......................................................................................................................................9
INSTALLATION CAUTION ......................................................................................................9
OPERATION CAUTION ..........................................................................................................9
2. INSTALLATION PART ...................................................................................................10
INDOOR UNIT BOX ....................................................................................................................10
OUTDOOR UNIT BOX ................................................................................................................10
3. GENERAL INFORMATION ............................................................................................11
MODEL INFORMATION ..............................................................................................................11
TYPICAL INSTALLATION EXAMPLE .........................................................................................13
CASE 1..................................................................................................................................13
CASE 2..................................................................................................................................14
CASE 3 .................................................................................................................................15
CYCLE DIAGRAM ......................................................................................................................16
WATER CYCLE.....................................................................................................................17
PARTS AND DIMENSIONS ........................................................................................................19
INDOOR UNIT (EXTERNAL) ................................................................................................19
INDOOR UNIT (INTERNAL)..................................................................................................20
OUTDOOR UNIT (EXTERNAL) ............................................................................................22
CONTROL PARTS ......................................................................................................................24
CONTROL BOX : INDOOR UNIT..........................................................................................24
CONTROL PANEL ................................................................................................................25
WIRING DIAGRAM : INDOOR AND OUTDOOR (INCL. FIELD WIRING) ............................26
4. INSTALLATION OF OUTDOOR UNIT ...........................................................................28
CONDITIONS WHERE OUTDOOR UNIT IS INSTALLED..........................................................28
DRILL A HOLE IN THE WALL .....................................................................................................28
INSTALLATION AT SEASIDE......................................................................................................29
SEASONAL WIND AND CAUTIONS IN WINTER.......................................................................29
5. INSTALLATION OF INDOOR UNIT ...............................................................................30
CONDITIONS WHERE INDOOR UNIT IS INSTALLED..............................................................30
GENERAL CONSIDERATIONS ............................................................................................30
SERVICE SPACE..................................................................................................................30
2 Air-to-Water Heat Pump
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6. PIPING AND WIRING FOR OUTDOOR UNIT ...............................................................37
REFRIGERANT PIPING .............................................................................................................37
CONSTRAINTS IN PIPE LENGTH AND ELEVATION ..........................................................37
PREPARATION FOR PIPING ...............................................................................................38
CONNECTING PIPE TO INDOOR UNIT ..............................................................................39
CONNECTING PIPE TO OUTDOOR UNIT ..........................................................................39
CIRCUIT BREAKER SPECIFICATION .................................................................................42
WIRING PROCEDURE FOR POWER CABLE AND CONNECTING CABLE.......................43
FINALIZING ................................................................................................................................44
PIPE FORMING ....................................................................................................................44
LEAKAGE TEST AND EVACUATION .........................................................................................45
PREPARATION .....................................................................................................................45
LEAKAGE TEST....................................................................................................................45
EVACUATION........................................................................................................................46
7. PIPING AND WIRING FOR INDOOR UNIT ...................................................................47
WATER PIPING AND WATER CIRCUIT CONNECTION............................................................47
GENERAL CONSIDERATIONS ............................................................................................47
WATER PIPING AND WATER CIRCUIT CONNECTION ......................................................47
WATER CHARGING .............................................................................................................49
PIPE INSULATION ................................................................................................................49
ELECTRICAL WIRING................................................................................................................50
GENERAL CONSIDERATION...............................................................................................50
TERMINAL BLOCK INFORMATION .....................................................................................51
CONNECTING WITH OUTDOOR UNIT ...............................................................................52
ELECTRIC HEATER WIRING ...............................................................................................52
8. ACCESSORIES INSTALLATION...................................................................................53
ACCESSORIES SUPPORTED BY LG Electronics ...............................................................53
ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..............................................53
BEFORE INSTALLATION ...........................................................................................................54
THERMOSTAT ............................................................................................................................54
GENERAL INFORMATION ...................................................................................................54
HOW TO WIRE THERMOSTAT ............................................................................................55
FINAL CHECK.......................................................................................................................56
DHW TANK AND DHW TANK KIT/SOLAR THERMAL KIT.........................................................57
GENERAL INFORMATION ...................................................................................................57
Installation Manual 3
ENGLISH
MOUNTING TO WALL ..........................................................................................................31
WATER VOLUME AND WATER PUMP CAPACITY..............................................................32
PRESSURE DROP ...............................................................................................................34
WATER VOLUME AND EXPANSION VESSEL PRESSURE................................................35
WATER QUALITY .................................................................................................................36
FROST PROTECTION..........................................................................................................36
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HOW TO INSTALL DHW TANK.............................................................................................58
HOW TO INSTALL DHW TANK KIT ......................................................................................59
HOW TO WIRE DHW TANK HEATER ..................................................................................61
HOW TO INSTALL SOLAR THERMAL KIT...........................................................................62
DRY CONTACT...........................................................................................................................62
REMOTE TEMPERATURE SENSOR.........................................................................................62
3WAY VALVE ..............................................................................................................................63
HOW TO WIRE 3WAY VALVE...............................................................................................63
FINAL CHECK.......................................................................................................................63
2WAY VALVE ..............................................................................................................................64
GENERAL INFORMATION ...................................................................................................64
HOW TO WIRE 2WAY VALVE...............................................................................................64
FINAL CHECK.......................................................................................................................64
CONDITIONS IF ACCESSORIES ARE INSTALLED ..................................................................65
THERMOSTAT ......................................................................................................................65
REMOTE AIR TEMPERATURE SENSOR ............................................................................65
DHW TANK AND DHW TANK KIT / SOLAR THERMAL KIT .................................................66
9. SYSTEM SET-UP ...........................................................................................................68
DIP SWITCH SETTING...............................................................................................................68
GENERAL INFORMATION ...................................................................................................68
DIP SWITCH INFORMATION ...............................................................................................69
INSTALLER SETTING ................................................................................................................72
HOW TO ENTER INSTALLER SETTING MODE..................................................................72
SUMMARY ............................................................................................................................73
COMMON SETTING .............................................................................................................74
TEMPERATURE RANGE SETTING .....................................................................................75
TEMPERATURE CONTROL PARAMETER SETTING .........................................................76
10. CHECK POINTS, MAINTENANCE AND TROUBLESHOOTING................................81
CHECK LIST BEFORE STARTING OPERATION .....................................................................81
MAINTENANCE.........................................................................................................................82
TEST RUN.................................................................................................................................82
CHECK BEFORE TEST RUN ..............................................................................................82
TROUBLESHOOTING...............................................................................................................83
TROUBLESHOOTING FOR PROBLEM WHILE OPERATION.............................................83
TROUBLESHOOTING FOR ERROR CODE ........................................................................84
AIRBORNE NOISE EMISSION .................................................................................................85
LIMITING CONCENTRATION ...................................................................................................85
4 Air-to-Water Heat Pump
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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.
Chapters
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Contents
• 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.
Chapter 8
• Information about supported accessories
• Specification, Constraints, and wiring are described.
• Before purchasing accessories, please find supported specification to buy proper one.
Chapter 9
• Test operation and check point while test running.
Chapter 10
• Check points before starting operation are explained.
• Troubleshooting, maintenance, and error code list are presented to correct problems.
REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.
TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.
Installation Manual 5
ENGLISH
Preface
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Safety Precautions
1. Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be
followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage to properties only.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
Installation
• 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
• 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.
• For installation, always contact the dealer or an authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
6 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 7
Safety Precautions
Operation
• 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.
• 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.
• 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.
Installation Manual 7
ENGLISH
• 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 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 causeproduct damage
• Do not touch leaked refrigerant directly.
- There is risk of frostbite.
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 8
Safety Precautions
• 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.
• 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.
• 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.
• 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.
8 Air-to-Water Heat Pump
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Safety Precautions
ENGLISH
CAUTION
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.
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.
• 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.
Installation Manual 9
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Installation Part
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.
Item
Image
Indoor unit
Installation
Manual
INDOOR UNIT BOX
Quantity
Item
Image
Quantity
1
Shut-off valve
2
2
Installation
Sheet
1
1
Remote
controller
remover
1
INSTALLATION MANUAL
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.
www.lg.com
OWNER’S MANUAL
Owner's
Manual
AIR-TO-WATER
HEAT PUMP
Please read this manual carefully before operating
your set and retain it for future reference.
www.lg.com
OUTDOOR UNIT BOX
Item
Image
Quantity
Outdoor Unit
U4 Chassis
(Product heating capacity :
5kW, 7kW, 9kW)
1
Outdoor Unit
U3 Chassis
(Product heating capacity :
12kW, 14kW, 16kW)
1
10 Air-to-Water Heat Pump
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General Information
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 Information
Model number nomenclature
A
H
U
W
0
9
6
A
3
Series Number
3. Series
Function
A : General heating heat pump
Electrical ratings
6 : 1 phase 220-240V AC 50Hz
8 : 3 phase 380-415V AC 50Hz
Heating Capacity (kW)
05 : 5kW 07 : 7kW 09 : 9kW 12 : 12kW
14 : 14kW 16 : 16kW
Model Type
W : Inverter Heat Pump
Classification
U : Outdoor Unit
Air-to-Water Heat Pump for R410A
A
H
N
W
1
6
6
0
6
A
3
Series Number
3. Series
Function
A : General heating heat pump
Heater Capacity (kW)
06 : 6kW
09 : 9kW
Heater Electrical ratings
6 : 1 phase 220-240V AC 50Hz
8 : 3 phase 380-415V AC 50Hz
Heating Capacity (kW)
09 : 9kW 16 : 16kW
Model Type
W : Inverter Heat Pump
Classification
N : Indoor Unit
Air-to-Water Heat Pump for R410A
Installation Manual 11
ENGLISH
3. General 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.
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General Information
Model name and related information
Model Name
Outdoor Unit
Built-In Electric
Heater(kW)
Power Source
(Electric Heater)
Capacity
Heating(kW)*1
Cooling(kW)*2
AHUW056A3
5.0
5.0
AHUW076A3
7.0
7.0
AHUW096A3
9.0
9.0
AHUW126A3
12.0
10.4
AHUW146A3
14.0
12.0
AHUW166A3
16.0
13.0
AHUW128A3
12.0
10.4
14.0
12.0
16.0
13.0
AHUW148A3
Indoor Unit
AHNW16606A3
AHNW16809A3
AHUW168A3
6(3+3)
9(3+3+3)
220-240 V ~ 50 Hz
380-415 V ~ 50 Hz
*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.
12 Air-to-Water Heat Pump
Power Source
(Unit)
220-240 V ~ 50 Hz
380-415 V ~ 50 Hz
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General Information
ENGLISH
Typical Installation Example
CAUTION
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.
CASE 1: Connecting Heat Emitters for Heating and Cooling
(Under floor loop, Fan Coil Unit, and Radiator)
Outdoor
Indoor
Outdoor Unit
Indoor Unit
Fan coil unit
Note:
Floor heating loop
Radiator
• 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.
High Temperature
Room Thermostat(Field supply)
Shut-off valve
Low Temperature
2way valve
(Field supply)
By-pass valve(Field supply)
Installation Manual 13
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General Information
CASE 2: Connecting DHW Tank
Outdoor
Indoor
Outdoor Unit
Indoor Unit
Hot water
Fan coil unit
Floor heating loop
Radiator
DHW
tank
City water
Note:
• DHW tank
- It should be equipped with internal electric heater to generate sufficient heat energy in very cold
season.
- DHW : Domestic Hot Water
• 3way valve
- Type of 3way valve and specification should be complied with chapter 4 and chapter 7 of
installation manual.
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve
(Field supply)
Shut-off valve
By-pass valve(Field supply)
14 Air-to-Water Heat Pump
3way valve
(Field supply)
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General Information
Outdoor
ENGLISH
CASE 3: Connecting Solar thermal system
Indoor
Outdoor Unit
Indoor Unit
Solar heat source
Hot water
Fan coil unit
Floor heating loop
Radiator
DHW
tank
City water
Note:
• DHW tank
- It should be equipped with internal electric heater to generate sufficient heat energy in very cold
season.
- DHW : Domestic Hot Water
• Pump
- Maximum power consumption of pump should be less than 0.25kW.
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve
(Field supply)
3way valve
(Field supply)
Shut-off valve
By-pass valve(Field supply)
Pump(Field supply)
Installation Manual 15
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General Information
Cycle Diagram
EEV
LIQUID SIDE
Service
Valve
(3 way)
Indoor Unit
Plate Heat
Exchanger
TH6
Th2
Water. Out
Water. In
TH7
Outdoor Unit
Heat Exchanger
TH8
Th3
TH4
Pressure
Sensor
GAS SIDE
TH1
(Accessories)
Service
Valve
(3 way)
4 way
Valve
TH5
Accumulator
Compressor
Description
Category
Indoor
Unit
Outdoor
Unit
Symbol
Meaning
PCB
Connector
- Optional accessory (being sold separately)
- Not shown in diagram
Th1
Remote air temperature sensor
Th2
Th3
Th4
Th5
Inlet evaporator temperature sensor
CN_PIPE_IN - Meaning is expressed based on Cooling
Outlet evaporator temperature sensor
CN_PIPE_OUT mode.
Compressor-suction pipe temperature sensor
CN_SUCTION
Compressor-discharge pipe temperature sensor CN_DISCHA
Th6
Condenser temperature sensor
CN_C_PIPE
Th7
Outdoor air temperature sensor
CN_AIR
Th8
Condenser middle temperature sensor
CN_MID
EEV
Electronic Expansion Valve
CN_LEV1
16 Air-to-Water Heat Pump
CN_ROOM
Remarks
- Description is expressed based on Cooling
mode.
Basic installation
(IDU + ODU)
Underfloor
Heating
Radiator
Fan
Coil
Unit
DHW Tank is
Installed
(DHW tank is
Necessary)
DHW Tank
Solar thermal system is
connected
(Solar thermal kit is
necessary)
Water cycle
ENGLISH
Solar
Thermal
Componets
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General Information
Installation Manual 17
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 18
General Information
Description
Category
Symbol
TH1
TH2
Indoor Unit
TH3
TH4
TH5
F/S
E/HT
W_PUMP1
EXP/TANK
TH8
CTR/PNL
2WAY V/V_1
W/TANK
B/HT
Water
Heating
Meaning
Refrigerant temperature sensor
(Gas side)
Refrigerant temperature sensor
(Liquid side)
Entering Water temperature sensor
Interim Water temperature sensor
Leaving Water temperature sensor
Flow Switch
Solar
Heating
W_PUMP/2
CN_PIPE_IN
CN_TH3
Remarks
- Meaning is expressed based on Cooling
mode.
- TH3, TH4, and TH5 are connected at 6 pin
type connector CN_TH3.
CN_FLOW1
Electric Heater
Internal Water Pump
Expansion Tank
CN_MOTOR1
(no connector)
Remote Air temperature sensor
CN_ROOM
- Water Pump is connected at CN_MOTOR1
- Absorb volume change of heated water,
- Optional accessory (sold separately)
- Model : PQRSTA0
Control Panel (or ‘Remote Controller’)
CN_REMO
- Pre built-in at indoor unit
To control water flow for Fan Coil Unit
DHW 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
CITY WATER
of W/TANK
SHOWER
Water supplied to end-user
TH6
W/TANK water temperature sensor
3WAY V/V_2
CN_PIPE_OUT
- Heating capacity is divided into two level :
partial capacity by E/HEAT(A) and full
capacity by E/HEAT(A) + E/HEAT(B).
CN_E/HEAT(A)
- Operating power(230V AC 50Hz) of
CN_E/HEAT(B) E/HEAT(A) and E/HEAT(B) are supplied by
external power source via relay connector
and ELB.
3WAY V/V_1
TH7
PCB Connector
CN_2WAY(A)
- 3rd party accessory and Field installation
(sold separately)
- Generating and storing DHW by
AWHP or built-in electric heater
- 3rd party accessory and Field installation
CN_B/HEAT(A) (usually built-in at W/TANK)
- Supplying additional water heating capacity.
(no connector)
CN_3WAY(A)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
(no connector)
- Field installation
(no connector)
External Water Pump
- This system can include following components : Solar panel, Sensors, Thermostats,
SOLAR THER- Interim heat exchanger, Water pump, etc.
MAL SYSTEM - To utilized hot water heated by SOLAR
THERMAL SYSTEM, end-user must by LG
AWHP Solar-Kit.
18 Air-to-Water Heat Pump
- Field installation
CN_TH4
- TH6 and TH7 are connected at 4 pin type
connector CN_TH4.
- TH6 is a part of DHW tank kit.
(Model:PHLTA)
- TH7 is a part of solar thermal kit
(Model:PHLLA)
CN_3WAY(B)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
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
- 3rd party accessory and Field installation
(sold separately)
- 2 wire NO or NC type 2way valve is
supported.
- 3rd party accessory and Field installation
(sold separately)
CN_W/PUMP(B) - If water pump of SOLAR THERMAL SYSTEM
is incapable of circulation,external water pump
can be used.
(no connector)
- 3rd party accessory and Field installation
(sold separately)
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 19
General Information
ENGLISH
Parts and Dimensions
Indoor unit(External)
(unit: mm)
490
315
850
315
490
Description
No
Name
Remark
1
Control Panel
Built-in Remote Controller
Installation Manual 19
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 20
General Information
Indoor unit(Internal)
484
84.5
116
123
76
41
36.9
46.4
63.4
847.8
289.6
484
(unit:mm)
20 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 21
General Information
No
Name
ENGLISH
Description
Remark
1
Leaving Water Pipe
Male PT 1 inch
2
Entering Water Pipe
Male PT 1 inch
3
Refrigerant Pipe
Ø9.52mm
4
Refrigerant Pipe
Ø15.88mm
5
Water Pump
Max Head 9.5 / 7 / 6 m
6
Safety Valve
Open at water pressure 3 bar
7
Control Box
PCB and terminal blocks
8
Thermal switch
Cut-off power input to electric heater at 90 °C
(manual return at 55C)
9
Flow Switch
Minimum operation range at 15 LPM.
10
Plate Heat Exchanger
Heat exchange between refrigerant and water
11
Pressure Gage
Indicates circulating water pressure
12
Expansion Tank
Absorbing Volume change of heated water
13
Air Vent
Air purging when Charging water
14
Electric Heater
Please refer to the below Page
‘Model name and related information’
15
Strainer
Filtering and stacking particles inside circulating water
16
Shut-off valve
To drain or to block water when pipe connecting
Installation Manual 21
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 22
General Information
Outdoor unit(External)
Product Heating
Capacity :
12kW,14kW,16kW
U3 Chassis
(unit:mm)
490
Supporter
Description
No
1
2
3
Name
Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill
22 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 23
General Information
(unit:mm)
Supporter
Description
No
1
2
3
Name
Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill
Installation Manual 23
ENGLISH
Product Heating
Capacity : 5kW,7kW,9kW
U4 Chassis
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 24
General Information
Control Parts
Control Box : Indoor Unit
1Ø Electric Heater Model
3Ø Electric Heater Model
Description
No
Name
Remark
1
Terminal blocks
The terminal blocks allow easy connection of field wiring
2
Unit ELB
The ELB protects the unit against overload or short circuit
3
Water tank heater
ELB(optional)
The ELB protects the water tank heater in sanitary water tank
against overload or short circuit
4
Magnetic switch
5
Main PCB
24 Air-to-Water Heat Pump
The main PCB(Printed Circuit Board) controls the functioning
of the unit
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 25
General Information
ENGLISH
Control Panel
Operation display
window
Back button
OK
On/Off Button
OK Button
Up/Down/Left/Right
Button
Operation display window
Operation and Settings status display
Back button
When you move to the previous stage from the menu’s
setting stage
Up/down/left/right button
When you change the menu’s setting value
OK button
When you save the menu’s setting value
On/Off button
When you turn ON/OFF the air conditioner
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 25
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 26
General Information
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 1Ø, Outdoor : 1Ø)
26 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 27
General Information
Installation Manual 27
ENGLISH
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Ø, Outdoor : 3Ø)
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 28
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.
Conditions where Outdoor Unit is Installed
• 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.
Su
nro
of
300
Fe
ob nce
sta or
cle
s
300
600
700
Minimum service space (unit:mm)
Drill a Hole in the Wall
28 Air-to-Water Heat Pump
Wall
Indoor
Outdoor
5~7mm
• 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.
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 29
Installation of Outdoor Unit
ENGLISH
Installation at Seaside
CAUTION
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion
on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it
needs additional anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)
1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind
Sea wind
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
Windbreak
• 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.
Sea wind
• It should be keep more than 700 mm of space
between outdoor unit and the windbreak for easy
air flow.
3) Select a well-drained place.
Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
Seasonal wind and cautions in winter
• Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well.
• Get ready for seasonal wind or snow in winter even in other areas.
• Install a suction and discharge duct not to let in snow or rain.
• Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes on the air suction hole,
the system may malfunction. If it is installed at snowy area, attach the hood to the system.
• Install the outdoor unit at the higher installation console by 500 mm than the average snowfall (annual average
snowfall) if it is installed at the area with much snowfall.
• Where snow accumulated on the upper part of the Outdoor Unit by more than 100 mm, always remove snow for
operation.
1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the
product. (If width of the frame is wider than that of the product, snow may accumulate)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
Installation Manual 29
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 30
Installation of Indoor Unit
5. Installation of Indoor Unit
The indoor unit of
is installed inside where terminal of under floor water pipe cycle and
refrigerant pipe from the outdoor unit are accessible at the same time.
In this chapter conditions for installation place is described. In addition, considerations when
installing accessories or 3rd party accessories are described, too.
Conditions where Indoor Unit is Installed
Specific conditions are required for installation place such as service space, wall mounting, water
pipe length and height, total volume of water, adjusting expansion vessel, and water quality.
General Considerations
Followings are should be considered before the installation of the indoor unit.
- The installation place should be free from outdoor weather conditions such as rain, snow, wind,
frost, etc.
- Choose the place where is water-resistant or good drainage.
- Service space should be secured.
- No flammable materials around the indoor unit.
- Mice can not be appeared to prevent entering the indoor unit or attacking wires.
- Do not place anything in front of the indoor unit to ensure air circulation around the indoor unit.
- Do not locate anything under the indoor unit to be free from unexpected water out.
- In case of water pressure increasing to 3 bar, water drainage should be treated when water is
drained by safety valve.
Service Space
250
• Ensure that the spaces indicated by arrows around bottom,
side, and top side.
• Wider spaces are preferred for easy maintenance and
piping.
• If minimum service space is not secured, air circulation can
be troubled and internal parts of the indoor unit can be
damaged by overheating.
200
1300
200
Minimum service space
(unit : mm)
30 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 31
Installation of Indoor Unit
Step 1. Disconnect the remote control case from the front panel and disconnect the remote control
cable.
CAUTION
After installation is completed, return the remote control to its original state.
Use a flat-blade screwdriver or a coin to remove the remote control case.
Step 2. After releasing five screws, detach front cover from the indoor unit. While detaching the front
cover, grab the left and right sides of the front cover. Then pull into upward direction.
Bottom
screws
Upper screw
Step 3. Attach "Installation Sheet" to the wall and mark
the location of bolts. This sheet helps to find
correct location to the bolts.
CAUTION
The sheet should be attached level. If not, the supporting plate and the indoor unit will not be mounted
correctly.
Step 4. Detach the Installation sheet. Screw bolts at the
hole marks on the wall.
When screwing bolts, use M8 ~ M11 anchor
bolts to secure hanging the indoor unit.
Installation Manual 31
ENGLISH
Mounting to Wall
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 32
Installation of Indoor Unit
Self drilling screw can be used as alternatives of M8 ~ M11 anchor
bolts. But M8 ~ M11 anchor bolts are more preferred.
Step 5. Hang the indoor unit at the supporting plate.
Water volume and pump capacity
The water pump is BLDC, so it may be required to change default water pump speed in case of
noise by water flow. In most case, however, it is strongly recommended to set speed as Maximum.
Water pump speed
To secure enough water flow rate, do not set water pump speed as "Min."
It can lead unexpected flow rate error CH14.
32 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 33
Installation of Indoor Unit
ENGLISH
AHNW16606A3, AHNW16809A3
Pump model : PY-122NDDD3
Performance test based on standard ISO 9906 with pre-pressure 2.0bar and liquid temperature 20°C.
WARNING
Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.
Installation Manual 33
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 34
Installation of Indoor Unit
Pressure Drop
When installing the product, install additional pump in consideration of the pressure loss and pump
performance.
If flow-rate is low, overloading of product can occur.
Product pressure
Serviceable Head
drop [m]
[m]
(Plate heat
exchanger)
Capacity
Rated flow-rate
[LPM]
Pump Head [m]
(at rated flow-rate)
16kW
46.0
9.5
1.4
8.1
14kW
40.0
10.0
1.1
8.9
12kW
34.0
10.7
0.8
9.9
9kW
26.0
11.3
0.4
10.9
7kW
20.0
11.6
0.3
11.3
5kW
17.0
11.8
0.2
11.6
34 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 35
Installation of Indoor Unit
Inside
expansion vessel is included which is 8 liter capacity with 1 bar pre-pressure.
That means, according to the volume-pressure graph, total water volume of 230 liter is supported as
default. If total water volume is changed because of installation condition, the pre-pressure should be
adjusted to secure proper operation.
- Minimum total water volume is 20 liter.
- Pre-pressure is adjusted by the total water volume. If the indoor unit is located at the highest
position of the water circuit, adjustment is not required.
- To adjust pre-pressure, use nitrogen gas by certificated installer.
Pre-pressure in Expansion vessel (bar)
2.4
2.1
1.7
1.4
1.0
0.7
0.3
20
60
100
140
180
220
Maximum total water volume (liter)
260
300
340
Adjusting pre-pressure of expansion vessel is as following :
Step 1. Refer "Volume-Height" table.
If installation scene is belong to Case A, go to Step 2.
Otherwise, if it is Case B, do nothing. (pre-pressure adjustment is not required.)
Otherwise, if it is Case C, go to Step 3.
Step 2. Adjust pre-pressure by following equation.
Pre-pressure [bar] = (0.1xH+0.3) [bar]
where H : difference between indoor unit and the highest water pipe
0.3 : minimum water pressure to secure product operation
Step 3. Volume of expansion vessel is less than installation scene.
Please install additional expansion vessel at the external water circuit.
Volume-Height Table
H < 7m
H ≥ 7m
V < 230 liter V ≥ 230 liter
Case B
Case A
Case A
Case C
H : difference between indoor unit and the highest water pipe
V : total water volume of installation scene
Installation Manual 35
ENGLISH
Water Volume and Expansion Vessel Pressure
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 36
Installation of Indoor Unit
Water Quality
Water quality should be complied with EN 98/83 EC Directives. Requirement for resolved chemical
ingredients is following table. Detailed water quality condition can be found in EN 98/83 EC
Directives.
Parameter
Acrylamide
Antimony
Arsenic
Benzene
Benzo(a)pyrene
Boron
Bromate
Cadmium
Chromium
Copper
Cyanide
1.2-dichloroethane
Epichlorohydrin
Value
0.10 μg/l
5.0 μg/l
10 μg/l
1.0 μg/l
0.010 μg/l
1.0 mg/l
10 μg/l
5.0 μg/l
50 μg/l
2.0 mg/l
50 μg/l
3.0 μg/l
0.10 μg/l
Parameter
Value
Fluoride
1.5 mg/l
Lead
10 μg/l
Mercury
1.0 μg/l
Nickel
20 μg/l
Nitrate
50 mg/l
Nitrite
0.50 mg/l
Pesticides
0.10 μg/l
Pesticides — Total
0.50 μg/l
Polycyclic aromatic hydrocarbons
0.10 μg/l
Selenium
10 μg/l
Tetrachloroethene and Trichloroethene
10 μg/l
Trihalomethanes — Total
100 μg/l
Vinyl chloride
0.50 μg/l
CAUTION
• If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to
remove sludge and scale.
• Installing sludge strainer in the water loop is very important to prevent performance degrade.
• Chemical treatment to prevent rust should be performed by installer.
Frost protection
In areas of the country where entering water temperatures drop below 0 °C, the water pipe must be
protected by using an approved antifreeze solution. Consult your AWHP unit supplier for locally
approved solutions in your area. Calculate the approximate volume of water in the system. (Except
the AWHP unit.) And add six litters to this total volume to allow for the water contained in AWHP unit.
Antifreeze mixing ratio
Antifreeze type
0°C
-5°C
-10°C
-15°C
-20°C
-25°C
Ethylene glycol
0%
12%
20%
30%
-
-
Propylene glycol
0%
17%
25%
33%
-
-
Methanol
0%
6%
12%
16%
24%
30%
CAUTION
1. Use only one of the above antifreeze.
2. If a antifreeze is used, pressure drop and capability degradation of the system can be
occurred.
3. If one of antifreezes is used, corrosion can be occurred. So please add corrosion inhibitor.
4. Please check the concentration of the antifreeze periodically to keep same concentration.
5. When the antifreeze is used (for installation or operation), take care to ensure that antifreeze
must not be touched.
6. Ensure to respect all laws and norms of your country about Anti-freeze usage.
36 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 37
Piping and Wiring for Outdoor Unit
Procedures about refrigerant piping and electric wiring at the outdoor are described in this chapter. Most of
procedures are similar to those of LG Air Conditioner.
Refrigerant Piping
Before starting refrigerant piping, constraints in pipe length and elevation should be examined. After
resolving all constraints, some preparations are required to proceed. Then connecting pipe to the outdoor
and the indoor unit is beginning.
Constraints in Pipe Length and Elevation
Capacity
5kW
7kW
9kW
12kW
14kW
16kW
Pipe Size (mm : inch)
(Diameter : Ø)
Gas
Liquid
Standard
Max.
Standard
Max.
*Additional
Refrigerant
(g/m)
15.88(5/8") 9.52(3/8")
7.5
50
0
30
40
Length A (m)
Indoor unit
A
Elevation B (m)
A trap is not necessary
when the outdoor unit is
installed in a higher
position than the indoor
unit.
Outdoor unit
A
B
Outdoor unit
B
Indoor unit
CAUTION
1. Standard pipe length is 7.5m If the pipe length is longer than 7.5m, additional charge of the
refrigerant is required according to the table.
• Example : If 16kW model is installed at a distance of 50m, 1,700g of refrigerant should be
added according to following formula : (50-7.5) x 40g = 1,700g
2. Rated capacity of the product is based on standard length and maximum allowable length is
based on the product reliability in the operation.
3. Improper refrigerant charge may result in abnormal operation.
Note:
Fill in the f-gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases (This note about
f-gas label may not apply depending on your product type or market.)
① Manufacturing site (See Model Name label)
② Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant)
③ The total Charge (① + ②)
Installation Manual 37
ENGLISH
6. Piping and Wiring for Outdoor Unit
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 38
Piping and Wiring for Outdoor Unit
Preparation for Piping
Preparation for piping is five steps. As main cause of refrigerant leakage is defects in flaring work, please
carry out correct flaring work in the following steps.
Step 1. Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor unit and
the outdoor unit.
• Cut the pipes a little longer than measured
distance.
Copper
tube
Slanted Uneven Rough
90°
Pipe
Step 2. Burrs removal.
Reamer
• Remove all burrs completely from cut cross
section of the pipe.
• Put the end of the pipe to downward direction in
order to prevent drop of burrs into the pipe.
Point down
Step 3. Insert flare nut.
Flare nut
• Take out flare nuts attached at the indoor unit and
the outdoor unit.
• Insert flare nuts into burr-removed pipe.
• If flaring work is finished, it is impossible to insert
nuts into pipe.
Copper tube
Step 4. Flaring work.
• Carry out flaring work using dedicated flaring tool
for R-410A refrigerant as shown below.
Outside diameter
mm
inch
6.35
1/4
9.52
3/8
12.7
1/2
15.88
5/8
19.05
3/4
"A"
mm
1.1 ~ 1.3
1.5 ~ 1.7
1.6 ~ 1.8
1.6 ~ 1.8
1.9 ~ 2.1
Handle
Bar
Bar
"A"
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
• Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Smooth all round
Inside is shiny without scratches
Step 5. Check
• Compare the flared work with right figure.
= Improper flaring =
• If flare is seemed to be defective, cut off the flared
section and do flaring work again.
Even length
all round
38 Air-to-Water Heat Pump
Inclined Surface Cracked Uneven
damaged
thickness
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 39
Piping and Wiring for Outdoor Unit
ENGLISH
Connecting Pipe to Indoor Unit
Connecting pipe to the indoor unit is two steps. Read following directions carefully.
Step 1. Pre-tightening.
• Align the center of the pipes and sufficiently
tighten the flare nut by hand.
Indoor unit tubing
Step 2. Tightening.
Flare nut
Pipings
• Tighten the flare nut with a wrench.
• Tightening torque is as following.
Open-end wrench (fixed)
Outside diameter
mm
inch
6.35
1/4
9.52
3/8
12.7
1/2
15.88
5/8
19.05
3/4
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Flare nut
Torque wrench
Connection pipe
Indoor unit tubing
Connecting Pipe to Outdoor Unit
Connecting pipe to the outdoor unit is five steps including PCB setting.
Step 1. Determine direction of pipes.
• The pipes can be connetable in three directions.
• The directions are expressed in below figure.
• The pipes cannot be connected in downward direction.
Backward
Backward
Forward
Sideways
Forward
Sideways
Installation Manual 39
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 40
Piping and Wiring for Outdoor Unit
Step 2. Tightening
• Align the center of the pipes and sufficiently
tighten the flare nut by hand.
• Tighten the flare nut with a wrench until the
wrench clicks
• Tightening torque is as following.
Outside diameter
mm
inch
6.35
1/4
9.52
3/8
12.7
1/2
15.88
5/8
19.05
3/4
Continuous
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Torque wrench
Outdoor unit
Step 3. Preventing entering of foreign
objects
Liquid side piping
• Plug the pipe through-holes with putty or
insulation material (procured locally) to fill up
all gaps as shown in right figure.
• If insects or small animals enter the outdoor
unit, it may cause a short circuit in the electrical
box.
• Finally, form the pipes by wrapping the
connecting portion of the indoor unit with
insulation material and secure it with two kinds
of vinyl tape. Ensuring thermal insulation is
very important.
Gas side piping
Connecting wire
Drain hose
(if necessary)
Connection pipe
Putty or insulating material
(produced locally)
40 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 41
Piping and Wiring for Outdoor Unit
Two kind of cables should be connected to the outdoor unit : One is ‘Power cable’, the other one is
‘Connecting cable’. Power cable is a cable which is used to supply external electricity to the outdoor unit.
This cable is generally connected between external power source (such as main electric power distribution
panel of user’s house) and the outdoor unit. Connecting cable is, on the other hand, used to connect
between the outdoor unit and the indoor unit to supply electric power to the indoor unit and to establish the
communication between the outdoor unit and the indoor unit.
Procedure for wiring to the outdoor unit is four steps. Before starting wiring, check if wire specification is
suitable and read following directions and cautions VERY carefully.
CAUTION
The power cord connected to the outdoor unit should be complied
withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a
cord set complying with the national regulation.
1 Phase(Ø)
The connecting cable connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4 (This equipment shall be
provided with a cord set complying with the national regulation.)
NORMAL CROSS-SECTIONAL AREA
Model
GN
/YL
AHUW056A3
20
mm
AHUW076A3
AHUW096A3
3 Phase(Ø)
AHUW126A3
4
20
mm
GN
/YL
20
1
AHUW146A3
GN
/YL
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2
Phase (Ø) Area (mm2)
6
AHUW166A3
mm
When the connection line between the indoor unit and
outdooor unit is over 40m, connect the telecommunication
line and power line separately.
AHUW128A3
AHUW148A3
3
2.5
AHUW168A3
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
Round pressure terminal
Power wire
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
WARNING:
Make sure that the screws of the terminal are free from looseness.
Installation Manual 41
ENGLISH
Electrical Wiring
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 42
Piping and Wiring for Outdoor Unit
Point for attention regarding quality of the public electric power supply
This equipment complies with respectively:
- EN/IEC 61000-3-12 (1) provided that the short-circuit power Ssc is greater than or equal to the
minimum Ssc value at the interface point between the user's supply and the public system. It is the
responsibility of the installer or user of the equipment to ensure, by consultation with the distribution
network operator if necessary, that the equipment is connected only to a supply with respectively: Ssc
greater than or equal to the minimum Ssc value.
Model
AHUW056A3
AHUW076A3
AHUW096A3
AHUW126A3
AHUW146A3
AHUW166A3
Minimum Ssc Value
Model
AHUW128A3
AHUW148A3
AHUW168A3
3,142
Minimum Ssc Value
2,348
• European/International Technical Standard setting the limits for voltage changes, voltage
fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤ 75A.
• European/International Technical Standard setting the limits for harmonic currents produced by
equipment connected to public low-voltage systems with input current ≤16A of ≻75A per phase.
Circuit Breaker Specification
Perform the electrical wiring work according to the
electrical wiring connection.
Main
• All wiring must comply with local requirements.
power source
• Select a power source that is capable of
supplying the current required by the air
conditioner.
Indoor
• Use a recognized ELCB(Electric Leakage Circuit
Breaker) between the power source and the
unit. A disconnection device to adequately
disconnect all supply lines must be fitted.
• Model of circuit breaker recommended by authorized personnel only
Model
AHUW056A3
AHUW076A3
AHUW096A3
AHUW126A3
AHUW146A3
AHUW166A3
AHUW128A3
AHUW148A3
AHUW168A3
Phase(Ø)
ELCB
30A
1
40A
3
42 Air-to-Water Heat Pump
20A
ELCB
Switch box
Outdoor
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 43
Piping and Wiring for Outdoor Unit
Step 1. : Disassemble the side panel from the outdoor unit by loosing screws.
Step 2. : Connect Power cable to Main Power Terminal and Connecting cable to Control
Terminal, respectively.
See below figure for detailed information. When connecting earth cable, the
diameter of cable should be bigger than 1.6mm 2 to secure safety. The earth cable is
connected to the terminal block where earth symbol
is marked.
Step 3. : Use cable clamps (or cord clamps) to prevent unintended move of Power cable and
Connecting cable.
Step 4. : Reassemble the side panel to the outdoor unit by fastening screws.
Control Terminal
(Terminal for
Connecting Cable)
Main Power
Terminal
(Terminal for
Power Cable)
Cable Clamp
(or Cord Clamp)
Cable Clamp
(or Cord Clamp)
Water
Outlet
Water
Inlet
Side Panel
Insulation pad
When connecting power cable, make sure the
rubber bushes are properly attached in knock-out
holes after removing the Insulation pad.
CAUTION
After checking and confirming following conditions, start wiring work.
1. Secure dedicated power source for the Air-to-Water heat pump. The wiring diagram (attached
inside the control box of the indoor unit) is presenting related information.
2. Provide a circuit breaker switch between power source and the outdoor unit.
3. Although it is very rare case, sometimes the screws used to fasten internal wires can be loosen
due to the vibration while product transportation. Check these screws and make it sure if they
are all fastened tightly. If not tightened, burn-out of the wire can be occurred.
4. Check the specification of power source such as phase, voltage, frequency, etc.
5. Confirm that electrical capacity is sufficient.
6. Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
7. Confirm that the cable thickness is as specified in the power sources specification. (Particularly
note the relation between cable length and thickness.)
8. Provide an ELB(electric leakage breaker) when the installation place is wet or moist.
9. The following troubles would be caused by abnormal voltage supply such as sudden voltage
increasing or voltage drop-down.
• Chattering of a magnetic switch (frequent on and off operation)
• Physical damage of parts where magnetic switch is contacted
• Break of fuse
• Malfunction of overload protection parts or related control algorithms.
• Failure of compressor start up
10. Ground wire to ground outdoor unit to prevent electrical shock.
Installation Manual 43
ENGLISH
Wiring Procedure for Power Cable and Connecting Cable
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 44
Piping and Wiring for Outdoor Unit
CAUTION
The Power cord connected to the unit should be selected according to the following
specifications .
Finalizing
After pipes are connected and electric cables are wired, pipe forming and some tests are remained. Especially,
careful attention is required while proceeding leakage test because the leakage of the refrigerant effects degrade
of performance directly. Also, it is very hard to find leaked point after all installation procedures are finished.
Seal a small
opening around
the forming
pipings with
Do pipe
by wrapping the connecting
gum type sealer.
Pipe Forming
Pipe
Drain hose
(not used)
Vinyl tape(narrow)
cable and refrigerant pipe (between the indoor
unit and outdoor unit) with thermal insulation
material and secure it with Plastic
two kinds of vinyl tape.
band
Wrap with
vinyl tape(wide)
1. Tape the refrigerant pipe, power cable and
connecting cable from down to up.
2. Secure the taped pipe is along with the exterior
wall. Form a trap to prevent water entering the
room and electrical part.
3. Fix the taped pipe onto the wall by saddle or
equivalent.
Taping Procedure
1. Tape the pipes, connecting cable and power cable from down to up. If taping direction is up to
down, rain drop may be sinking into the pipes or cables.
2. Secure the taped pipe along the exterior wall using saddle or equivalent.
3. Trap is required to prevent water from entering into electrical parts.
Seal a small
opening around
the pipings with
gum type sealant.
sealer.
Plastic
band
Drain hose
(not used)
Connecting
cable
Taping
Refrigerat
Pipes
Trap
minimum
50 mm
Power Cable
• Trap is required to prevent water from entering
into electrical parts.
44 Air-to-Water Heat Pump
Seal a small opening
around the pipings
with gum type sealer.
sealant.
Trap
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 45
Piping and Wiring for Outdoor Unit
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling(or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and
vacuumed to remove incondensible gas and moisture in the system.
Preparation
• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been
properly connected and all wiring for the test run has been completed. Remove the service valve caps
from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side
service valves on the outdoor unit are kept closed at this stage.
Leakage test
• Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service port
with charge hoses.
CAUTION
Be sure to use a manifold valve for
leakage test.
If it is not available, use a stop valve for
this purpose. The "Hi" knob of the
manifold valve must always be kept close.
• Pressurize the system to no more than 3.0
Mpa with dry nitrogen gas and close the
cylinder valve when the gauge reading
reached 3.0 Mpa Next, test for leaks with
liquid soap.
2. After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening the
charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.
Indoor unit
Outdoor unit
CAUTION
To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the
cylinder must be higher than its bottom when
you pressurize the system. Usually, the
cylinder is used in a vertical standing
position.
1. Do a leakage test of all joints of the
tubing(both indoor and outdoor) and both
gas and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
Manifold valve
Lo
Hi
Pressure
gauge
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Installation Manual 45
ENGLISH
Leakage test and Evacuation
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 46
Piping and Wiring for Outdoor Unit
Evacuation
1. Connect the charge hose end described in the
preceding steps to the vacuum pump to evacuate
the tubing and indoor unit.
Confirm the "Lo and Hi" knob of the manifold valve
is open. Then, run the vacuum pump.
The operation time for evacuation varies with tubing
length and capacity of the pump. The following table
shows the time required for evacuation.
Indoor unit
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is longer
If tubing length is less
than 10 m(33 ft)
than 10 m(33 ft)
Outdoor unit
30 min. or more
60 min. or more
0.8 torr or less
2. When the desired vacuum is reached, close the "Lo
and Hi" knob of the manifold valve and stop the
vacuum pump.
Finishing the job
1. With a service valve wrench, turn the valve stem of
liquid side valve counter-clockwise to fully open the
valve.
2. Turn the valve stem of gas side valve counterclockwise to fully open the valve.
3. Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then
remove the hose.
4. Replace the flare nut and its bonnet on the gas side
service port and fasten the flare nut securely with
an adjustable wrench. This process is very
important to prevent leakage from the system.
5. Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
46 Air-to-Water Heat Pump
Manifold valve
Lo
Pressure
gauge
Hi
Open
Vacuum pump
Open
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 47
Piping and Wiring for Indoor Unit
Procedures about water piping and electric wiring at the indoor unit are described in this chapter.
Water piping and water circuit connection, water charging, pipe insulations will be shown for water
piping procedures. For wiring, terminal block connection, connecting with the outdoor unit, electric
heater wiring will be introduced. Accessories connection, such as sanitary water tank, thermostat,
3way or 2way valves, etc will be dealt in separated chapter.
Water Piping and Water Circuit Connection
General Considerations
Followings are should be considered before beginning water circuit connection.
• Service space should be secured.
• Water pipes and connections should be cleaned using water.
• Space for installing external water pump should be provided if internal water pump capacity is
not enough for installation field.
• Never connect electric power while proceeding water charging.
Water Piping and Water Circuit Connection
Definition of terms are as follow :
• Water piping : Installing pipes where water is flowing inside the pipe.
• Water circuit connecting : Making connection between the product and water pipes or between
pipes and pipes. Connecting valves or elbows are, for example, in this category.
Configuration of water circuit is shown in Chapter 2. All connections should be complied with
presented diagram.
While installing water pipes, followings should be considered :
• While inserting or putting water pipes, close the end of the pipe with pipe cap to avoid dust
entering.
• When cutting or welding the pipe, always be careful that inner section of the pipe should not be
defective. For example, no weldments or no burrs are found inside the pipe.
• Drain piping should be provided in case of water discharge by the operation of the safety valve.
This situation can be happened when the internal pressure is over 3.0 bar and water inside the
indoor unit will be discharged to drain hose.
While connecting water pipes, followings should be considered.
• Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened
strongly to be free from water leakage.
• Connected sections should be leakage-proof treatment by applying tefron tape, rubber bushing,
sealant solution, etc.
• Appropriate tools and tooling methods should be applied to prevent mechanical breakage of the
connections.
• Operation time of flow control valve(e.g. 3way valve or 2way valve) should be less than 90
seconds.
• Drain hose should be connected with drain piping.
Installation Manual 47
ENGLISH
7. Piping and Wiring for Indoor Unit
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 48
Piping and Wiring for Indoor Unit
WARNING
Installing shut-off valve
• While assembling two shut-off valves, that are found inside ‘AWHP Installation Kit
(AET69364401)’, pop sound will be heard when valve is open or close by rotating handles. It is
normal condition because the sound is due to leakage of charged nitrogen gas inside the valve.
The nitrogen gas is applied to secure quality assurance.
• Before starting water charging, these two shut-off valves should be assembled with water inlet
and outlet pipe of the indoor unit.
Water condensation on the floor
While cooling operation, it is very important to keep leaving water temperature higher than 16°C.
Otherwise, dew condensation can be occurred on the floor.
If floor is in humid environment, do not set leaving water temperature below 18 °C.
Water condensation on the radiator
While cooling operation, cold water may not flow to the radiator. If cold water enters to the radiator,
dew generation on the surface of the radiator can be occurred.
Drainage treatment
While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In this
case, prepare drainage treatment (for example, vessel to contain condensed dew) to avoid water
drop.
48 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 49
Piping and Wiring for Indoor Unit
For water charging, please follow below procedures.
Step 1. Open all valves of whole water circuit. Supplied water should be charged not only inside the
indoor unit, but also in the under floor water circuit, sanitary water tank circuit, FCU water
circuit, and any other water circuits controlled by the product.
Step 2. Connect supply water into drain valve and fill valve located at the side of the shut-off valve.
CAUTION
No water-leakage permitted at the drain and fill
valve. Leakage-proof treatment which is described
in previous section should be applied.
Water Out
Water In
Step 3. Start to supply water. While supplying water, following should be kept.
• Pressure of supplying water should be 2.0 bar approximately.
• For supplying water pressure, time to be taken from 0 bar to 2.0 bar should be more than 1
minute. Sudden water supply can yield water drain through safety valve.
• Fully open the cap of air vent to assure air purging. If air is exist inside the water circuit,
then performance degrade, noise at the water pipe, mechanical damage at the surface of
electric heater coil.
Step 4. Stop water supplying when the pressure gage located in front of the control panel indicates
2.0 bar.
Step 5. Close drain valve and fill valve. Then wait for 20~30 seconds to observe water pressure
being stabilized.
Step 6. If following conditions are satisfactory, then go to step 7(pipe insulation). Otherwise, go to
step 3.
• Pressure gage indicates 2.0 bar. Note that sometimes pressure in decreased after step 5
due to water charging inside expansion vessel.
• No air purging sound is heard or no water drop are popping out from air vent.
Pipe Insulation
Purpose of water pipe insulation is :
• To prevent heat loss to external environment
• To prevent dew generation on the surface of the pipe in cooling operation
Installation Manual 49
ENGLISH
Water Charging
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 50
Piping and Wiring for Indoor Unit
Electrical Wiring
General Consideration
Followings are should be considered before beginning indoor unit wiring.
• Field-supplied electrical components such as power switches, circuit breakers, wires, terminal
boxes, etc should be properly chosen with compliance with national electrical legislation or
regulation.
• Make it sure that supplied electricity is enough to operate the product including outdoor unit,
electric heater, water tank heater, etc. The capacity of fuse also selected according to the power
consumption.
• The main electricity supply should be dedicated line. Sharing main electricity supply with other
devices such as washing machine or vacuum cleaner is not permitted.
CAUTION
• Before starting wiring job, the main electricity supply should be turned off until wiring is
completed.
• When adjusting or changing wiring, the main electricity supply should be turned off and ground
wire should be connected securely.
• Installation place should be free from the attack of wild animal. For example, mice’s wire attacking
or frog’s entering into the indoor unit may cause critical electrical accident.
• All power connections should be protected from dew condensation by thermal insulation.
• All electrical wiring should comply with national or local electrical legislation or regulation.
• The ground should be connected exactly. Do not earth the product to the copper pipe, steel fence
at the veranda, city water outlet pipe, or any other conductivity materials.
• Fix all cable using cord clamp tightly. (When cable is not fixed with cord clamp, use additionally
supplied cable ties.)
A
B
Hole A : for AC line (wire which is connected to the terminal block of the control box)
Hole B : for DC line (wire which is connected to the PCB of the control box)
50 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 51
Piping and Wiring for Indoor Unit
ENGLISH
Terminal Block Information
Symbols used below pictures are as follows :
- L, L1, L2 : Live (230V AC)
- N : Neutral (230V AC)
- BR : Brown , WH : White , BL : Blue , BK : Black
Terminal Block 1
water flow switching between
under floor heating and
DHW tank heating
energizing water
pump for solar
thermal system
1
2
3
4
5
6
7
8
9
10
L
L1
N
L
N
L
N
L
L1
N
WATER
PUMP
(B)
3WAY VALVE
(B)
water flow switching between using
solar thermal heating and skipping
solar thermal heating
WATER
TANK
HEATER
3WAY VALVE
(A)
turn on or off DHW
tank heater
Terminal Block 2
opening or closing
water flow for FCU
cooling
11
12
13
14
15
16
17
18
19
20
1(L)
2(N)
3
L1
L2
N
L
N
L1
L2
OUTDOOR UNIT
Terminal
Block 1
THERMOSTAT
(Default : 230V AC)
2WAY VALVE
(A)
Terminal
Block 3
Connection for thermostat
(230V AC)
Supporting type : Heating only or
Heating/Cooling
Power supply for Indoor
unit and communication
Terminal Block 3 (1Ø Electric Heater)
Terminal Block 3 (3Ø Electric Heater)
connecting external electric
power supply for DHW tank
electric heater
1(L)
Terminal
Block 2
2(N)
POWER SUPPLY
(1 Ø, 220-240 V, 50 Hz)
connecting external electric
power supply for internal
electric heater
3(L)
4(N)
TO ELB FOR
DHW TANK E/HEATER
connecting external electric
power supply for DHW tank
electric heater
1
2
3
4
5
L
N
TO ELB FOR
DHW TANK
E/HEATER
R
S
T
POWER SUPPLY
(3 Ø, 380-415 V, 50 Hz)
connecting external electric
power supply for DHW tank
electric heater
Installation Manual 51
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 52
Piping and Wiring for Indoor Unit
L
CAUTION
N
You should separate the communication
wiring, in case of communication wiring
length is over 40M
Separation
Power Supply
Shield cable
Communication Wiring
Connecting with Outdoor Unit
Terminal block at outdoor unit
1
2
3
Electric Heater Wiring
CAUTION
Power Cable Specification : The power cord connected to the outdoor unit should be complied
with IEC 60245 or HD 22.4 S4(Rubber insulated cord, type 60245 IEC 66 or H07RN-F)
1 Phase(Ø)
3 Phase(Ø)
NORMAL
CROSS-SECTIONAL
AREA 6mm2
GN
/YL
20
NORMAL
CROSS-SECTIONAL
AREA 6mm2
GN
/YL
20
mm
mm
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.
External power supply (same
dedicated power supply for the
indoor unit and outdoor unit)
L
R
N
T
S
L
N
1Ø Electric Heater
52 Air-to-Water Heat Pump
3Ø Electric Heater
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 53
Accessories Installation
can interface to various accessories to extend its functionality and to improve user
convenience. In this chapter, specifications about supported 3rd party accessories and how to
connect to
is introduced.
It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG
Electronics, please refer to installation manual of each accessories.
Accessories supported by LG Electronics
Item
DHW Tank Install Kit
Remote Air Sensor
Dry Contact
Solar Heating Kit
Purpose
Model
PHLTA : 1Ø
To operate with DHW tank
PHLTC : 3Ø
To control by air temperature
PQRSTA0
To receive on & off external signal PDRYCB500
To operate with solar heating system PHLLA(Limit temperature : 96℃)
DHW Tank
To generate and store hot water
PHS02060310 : 200 liter, Single Heating Coil,
1Ø 230V 50Hz 3kW Electric Heater
PHS02060320 : 200 liter, Double Heating Coil,
1Ø 230V 50Hz 3kW Electric Heater
PHS03060310 : 300 liter, Single Heating Coil,
1Ø 230V 50Hz 3kW Electric Heater
PHS03060320 : 300 liter, Double Heating Coil,
1Ø 230V 50Hz 3kW Electric Heater
Drain Pan
To prevent drain water drop
PHDPB
CAUTION
• Install the drain fan when cooling.
• If not installed, water may form.
• Please refer to separate installation manual when installing drain fan.
Accessories supported by 3rd party Companies
Item
Purpose
Specification
Solar Heating System
To generate auxiliary heating energy
for water tank
Thermostat
To control by air temperature
Heating-Only type (230V AC)
Cooling/Heating type (230V AC with
Mode selection switch)
3way valve and actuator
To control water flow for hot water
heating or floor heating
3 wire, SPDT (Single Pole Double
Throw) type, 230V AC
2way valve and actuator To control water flow for Fan Coil Unit
2 wire,NO(Normal Open) or NC(Normal
Closed) type, 230V AC
Installation Manual 53
ENGLISH
8. Accessories Installation
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 54
Accessories Installation
Before Installation
WARNING
Followings should be kept before installation
• Main power must be turned off during installing 3rd party accessories.
• 3rd party accessories should be comply with supported specification.
• Proper tools should be chosen for installation.
• Never do installation with wet hands.
Thermostat
Thermostat is generally used to control the product by air temperature. When thermostat is
connected to the product, the product operation is controlled by the thermostat.
General Information
The Heat Pump supports following thermostats.
Type
Power
Mechanical
(1)
230 V~
Electrical
(2)
230 V~
Operating Mode
Supported
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
(1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is
not required.
(2) Electric circuit such as display, LED, buzzer, etc is included in the thermostat and electric power
supply is required.
(3) Thermostat generates "Heating ON or Heating OFF" signal according to user"s heating target
temperature.
(4) hermostat generates both "Heating ON or Heating OFF" and "Cooling ON or Cooling OFF"
signal according to user"s heating and cooling target temperature.
CAUTION
Choosing heating / cooling thermostat
• Heating / cooling thermostat must have "Mode Selection" feature to distinguish operation mode.
• Heating / cooling thermostat must be able to assign heating target temperature and cooling
target temperature differently.
• If above conditions are not kept, the unit can not operation properly.
• Heating / cooling thermostat must send cooling or heating signal immediately when temperature
condition is satisfied. No delay time while sending cooling or heating signal is permitted.
54 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 55
Accessories Installation
Follow below procedures Step 1 ~ Step 5.
Step 1. Uncover front cover of the unit and open the control box.
Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3.
Step 3. If it is Heating only thermostat, go to step 4. Otherwise, if it is Heating / cooling thermostat,
go to step 5.
Step 4. Find terminal block and connect wire as below. After connecting, go to step 5.
17
L
18
N
19
L1
WARNING
20
L2
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat does not
require electric power supply.
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
(H)
CAUTION
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation electric type
thermostat.
Never connect external electric loads such as valves, fan coil units,
etc. If connected, Main PCB (Heater) can be seriously damaged.
Thermostat
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(H) : Heating signal from thermostat to PCB
Step 5. Find terminal block and connect wire as below.
17
L
18
N
19
L1
WARNING
20
L2
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat does
not require electric power supply.
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
(C)
Thermostat
(H)
CAUTION
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation Electric
type thermostat.
Never connect external electric loads such as valves, fan coil
units, etc. If connected, Main PCB (Heater) can be seriously
damaged.
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(C) : Cooling signal from thermostat to PCB
(H) : Heating signal from thermostat to PCB
Installation Manual 55
ENGLISH
How to wire thermostat
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 56
Accessories Installation
Final check
• DIP switch setting :
Set DIP switch No. 8 to ‘ON’. Otherwise, the unit can not recognize the thermostat.
• Remote Controller :
- ‘Thermostat’ text is displayed on the remote controller.
- Button input is prohibited.
56 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 57
Accessories Installation
To establish DHW circuit, 3way valve and DHW tank kit is required. If solar thermal system is preinstalled at the installation field, solar thermal kit is required to interface solar thermal system – to –
DHW tank – to –
General Information
supports following 3way valve.
Type
Power
Operating Mode
Supported
SPDT
3-wire
(1)
230V AC
Selecting “ Flow A” between
“ Flow A” and “ Flow B” (2)
Yes
Selecting “ Flow B” between
“ Flow A” and “ Flow B” (3)
Yes
(1) : SPDT = Single Pole Double Throw. Three wires consist of Live1 (for selecting Flow A), Live 2
(for selecting Flow B), and Neutral (for common).
(2) : 'Flow A' means water flow from the indoor unit to under floor water circuit.
(3) : 'Flow B' means water flow from the indoor unit to DHW tank.
Installation Manual 57
ENGLISH
DHW Tank and DHW Tank Kit/Solar Thermal Kit
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 58
Accessories Installation
How to Install DHW Tank
For more detail information about installing DHW tank, please refer installation manual provided with
DHW tank.
PHS02060310(LGRTV200E) / PHS03060310(LGRTV300E)
PHS02060320(LGRTV200VE) / PHS03060320(LGRTV300VE)
(unit : mm)
58 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 59
Accessories Installation
Fellow bellow procedures Spet 1 ~ Step 6
Step 1. Find magnetic switch and ELB(MCCB) in the kit. Fit
them into the indoor unit control box with enclosed a
braket and screws.(symbol Ⓐ at picture)
Step 2. Contact ‘CN_B/HEAT(A)’(white connector)of the indoor
unit PCB with magnetic switch contact using encolsed
cable(symbol Ⓑ at the picture). Connect magnetic
switch contactor port no. A1 and A2.
Step 3. Connect magnetic switch contactor port no.L1 and L3
with ELB(MCCB) port no. 2 and 4(symbol Ⓒ at the
picture).
ENGLISH
How to Install DHW Tank Kit
ʶ
ʸ
ʶ
ʷ
ʹ
ʺ
1Ø Electric Heater Model
CAUTION
Check Poarity
• Connect magnetic switch contact port no. L1 to ELB(MCCB) port no.2
• Connect magnetic switch contact port no. L3 to ELB(MCCB) port no.4
Step 4. Connect magnetic switch contactor port no. T1 and T3
with terminal block 1 port 6 and 7(symbol Ⓓ at the
picture).
Check Polarity
• Connect magnetic switch contact port no. T1 to terminal
block 1 port 6
• Connect magnetic switch contact port no. T3 to terminal
block 1 port 7
Step 5. Connect ELB(MCCB) to Terminal Block.
1Ø Electric Heater Model
’ Connect ELB(MCCB) port no.1 and 3 with terminal block 3
port 3 and 4(symbol Ⓔ at the picture).
3Ø Electric Heater Modelv
’ Connect ELB(MCCB) port no.1 and 3 with terminal block 3
port 1 and 2(symbol Ⓔ at the picture).
Check Polarity
1Ø Electric Heater Model
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 3
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 4
3Ø Electric Heater Model
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 1
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 2
ʶ
ʶ
ʸ
ʷ
ʹ
ʺ
3Ø Electric Heater Model
Installation Manual 59
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 60
Accessories Installation
Relay contactor
port no. assignment
1
3
2
4
ELB(MCCB) port no.
assignment
Note:
Some models are using MCCB instead of ELB
Step 6. Find DHW tank sensor. Connect it to ‘CN_TH4’ (Red Connector) of the indoor unit PCB
(symbol Ⓐ at the picture). The sensor wire should be passed through holes for sensor
(symbol Ⓑ and Ⓒ at the picture). The sensor should be mounted correctly to the sensor hole
of DHW tank.
CAUTION
Sensor mounting
Insert sensor into sensor socket and bolt it tightly.
• 1Ø Electric Heater Model and 3Ø Electric Heater Model are mounted by same method as below.
DHW tank
60 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 61
Accessories Installation
Step 1. Uncover heater cover of the DHW tank. It is located side of the tank.
Step 2. Find terminal block and connect wires as below. Wires are field-supplied item.
(L) : Live signal from PCB to Heater
(N) : Neutral signal from PCB to Heater
WARNING
Wire specification
• Cross-sectional area of the wire should be 6mm2.
Adjusting thermostat temperature
• To guarantee proper operation, it is recommended to set temperature of thermostat to maximum
temperature (symbol at the picture).
• 1Ø Electric Heater Model and 3Ø Electric Heater Model are set by same method as below.
L
N
WATER
TANK
HEATER
(L)
(N)
A
Installation Manual 61
ENGLISH
How to Wire DHW Tank Heater
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 62
Accessories Installation
How to Install Solar Thermal Kit
Step 1. Check the diameter of pre-installed pipes. (symbol Ⓐ and Ⓑ)
Step 2. If the diameter of pre-installed pipes is different from diameter of solar thermal kit, it is
necessary to reduce or extend of pipe’s diameter.
Step 3. After Step 2., connect the pipe and solar thermal kit.
Step 4. Connect solar thermal sensor to ‘CN_TH4’(Red connector) of the indoor unit PCB.
If the DHW tank sensor is connected, disconnect the sensor from PCB first.
Solar Thermal Sensor
(less than 12 m)
3way valve
(Field Supply)
Solar
Thermal
System
Water Out (Field Supply)
Water In
Water Tank Sensor
(less than 12 m)
Pump
(Field Supply)
Water In
Solar
Collector
(Field Supply)
Water Out
Water Tank
Dry Contact
LG Dry Contact is a solution for automatic control of air conditioning system at the owner's behest.
In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from
external sources like key-in lock, door or window switch etc specially used in Hotel rooms.
How to Install Dry Contact
• For more information about installing Dry Contact, Please refer installation manual provided with
Dry Contact.
• For system set-up, please read chapter 8.(Especially function code No.6)
Remote Temperature Sensor
Remote temperature sensor can be installed any place a user wants to detect the temperature.
How to Install Remote Temperature Sensor
• For more information about installing Remote Temperature Sensor, Please refer installation manual
provided with Remote Temperature Sensor.
• For system set-up, please read chapter 8.(Especially function code No.3)
62 Air-to-Water Heat Pump
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Accessories Installation
ENGLISH
3Way Valve
How to Wire 3Way Valve
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the indoor unit and open the control box.
Step 2. Find terminal block and connect wire as below.
1
L
2
L1
3
N
WARNING
• 3way valve should select water tank loop when electric power is
supplied to wire (W) and wire (N).
3WAY VALVE
(A)
(W)
(U)
(N)
• 3way valve should select under floor loop when electric power is
supplied to wire (U) and wire (N).
3way valve
(W) : Live signal (Water tank heating) from PCB to 3way valve
(U) : Live signal (Under floor heating) from PCB to 3way valve
(N) : Neutral signal from PCB to 3way valve
Final Check
• Flow direction :
- Water should flow from water outlet of the indoor unit to DHW tank water inlet when DHW tank
heating is selected.
- To verify the flow direction, check temperature at the water outlet of the indoor unit and water inlet
of DHW tank.
- If correctly wired, these temperatures should be almost equivalent if thermal insulation of water
pipe is well performed.
• Noise or water pipe vibration while 3way valve operation
- Due to surging effect or cavitation effect, noise or water pipe vibration can be occurred while
3way valve is operating.
- In that case, check followings :
• Is water circuit (both under floor water loop and sanitary water tank loop) fully charged? If not,
additional water charging is required.
• Fast valve operation yields noise and vibration. Appropriated valve operating time is 60~90
seconds.
Installation Manual 63
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Accessories Installation
2Way Valve
2way valve is required to control water flow while cooling operation. Role of 2way valve is to cut off
water flow into under floor loop in cooling mode when fan coil unit is equipped for cooling operation.
General Information
supports following 2way valve.
Type
Power
NO 2-wire
(1)
230V AC
NC 2-wire
(2)
230V AC
Operating Mode
Supported
Closing water flow
Yes
Opening water flow
Yes
Closing water flow
Yes
Opening water flow
Yes
(1) : Normal Open type. When electric power is NOT supplied, the valve is open. (When electric
power is supplied, the valve is closed.)
(2) : Normal Closed type. When electric power is NOT supplied, the valve is closed. (When electric
power is supplied, the valve is open.)
How to Wire 2Way Valve
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the indoor unit and open the control box.
Step 2. Find terminal block and connect wire as below.
14
L1
15
L2
16
N
2WAY VALVE
(A)
(NO)
(NC)
(N)
2way valve
CAUTION
Dew Condensation
• Wrong wiring can yield dew condensation on the floor. If radiator is
connected at the under floor water loop, dew condensation can be
occurred on the surface of the radiator.
WARNING
Wiring
• Normal Open type should be connected to wire (NO) and wire (N)
for valve closing in cooling mode.
• Normal Open type should be connected to wire (NO) and wire (N)
for valve closing in cooling mode.
(NO) : Live signal (for Normal Open type) from PCB to 2way valve
(NC) : Live signal (for Normal Closed type) from PCB to 2way valve
(N) : Neutral signal from PCB to 2way valve
Final Check
• Flow direction :
- Water should not flow into under floor loop in cooling mode.
- To verify the flow direction, check temperature at the water inlet of the under floor loop.
- If correctly wired, this temperatures should not be approached to 6°C in cooling mode.
64 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 65
Accessories Installation
This section describes conditions about installation place where accessories are installed. Detailed
installation for accessories (including supported accessory specification, wiring, PCB setting for
accessory configuration, etc) will be dealt in separated chapter.
Thermostat
CAUTION
1. NEVER USE 230V AC Thermostat and 24V AC Thermostat at the same time. If used together, it
causes short-circuit and yields power cut-off by circuit breaker.
2. Some electro-mechanical type thermostat has internal delay time to protect compressor. In that case,
mode change can takes time more than user's expectation. Please read thermostat manual carefully
if the product does not response quickly.
3. Setting temperature range by thermostat can be different with that of the product. The heating or
cooling set temperature should be chosen within the setting temperature range of the product.
4. It is highly recommended that the thermostat should be installed where space heating is mainly
applied.
Following location should be avoid to secure proper operation :
• Height from floor is approximately 1.5 m.
• Thermostat can not be located where the area may be hidden when door is open.
• Thermostat can not be located where external thermal influence may be applied. (such as
above heating radiator or open window)
Remote Air Temperature Sensor
Role and constraint while installation of remote air temperature sensor is very similar to that of
thermostat.
• Distance between the indoor unit and the remote air temperature sensor should be less than 15 m
due to length of the connection cable of remote air temperature sensor.
• For other constraints, please refer to previous page where constraints about thermostat is
described
Direct
Sun ray contact area
Direct
Sun ray contact area
yes
yes
no
no
no
5ft
(1.5m)
Connection cable
(less than 15m)
5ft
(1.5m)
no
no
no
Thermostat
Remote Air Temperature Sensor
Installation Manual 65
ENGLISH
Conditions if Accessories are Installed
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 66
Accessories Installation
DHW Tank and DHW Tank Kit / Solar Thermal Kit
Installing DHW tank requires following considerations :
• DHW tank should be located at the flat place.
• Water quality should be complied with EN 98/83 EC Directives.
• As this water tank is DHW tank (indirect heat exchange), do not use anti water-freezing treatment
like ethylene grycol.
• It is highly recommend to wash out inside of the DHW tank after installation. It ensures generating
clean hot water.
• Near the DHW tank there should be water supply and water drain to easy access and maintenance.
• Set the maximum value of the temperature control device of DHW tank.
While installing DHW tank with DHW tank kit or solar thermal kit, there are some constraints like
below :
• DHW tank should be located under the indoor unit or same height with the indoor unit.
• DHW tank should be located under the solar thermal system.
• Distance between DHw tank sensor or solar thermal sensor should be less than 5 m.
• If there is AC power cable near the sensor cable, the sensor cable should be away from the AC
power cable at least 5 m to prevent electric noise.
Solar Thermal Sensor
(Less than 12 m)
3way valve
(Field Supply)
Solar
Thermal
System
Water Out (Field Supply)
Water Tank Sensor
Water In
(Less than 12 m)
Pump
(Field Supply)
Water In
Water Out
Water Tank
66 Air-to-Water Heat Pump
Solar
Collector
(Field Supply)
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 67
Accessories Installation
Hot water supply
Shower
(End of Hot
water supply)
Recirculation
Pump
Water In
DHW Tank
Water Out
Check Valve
External
Time Scheduler
City water
Installation Manual 67
ENGLISH
WARNING
Installing recirculation pump
When
is used with DHW tank, it is STRONGLY recommended to install recirculation pump
to prevent flooding out cold water at the end of hot water supply and to stabilize the water temperature
inside DHW tank
- The recirculation pump should be operated when DHW demand is not required. Therefore, external
time scheduler to determine when the recirculation pump should turn on and turn off is required.
- The operating duration time of the recirculation pump is calculated as follow :
Duration time [minute] = k x V x R
k : 1.2 ~ 1.5 is recommended. (If distance between pump and tank is far, then choose high number)
V : Volume of sanitary water tank [liter]
R : Water flow rate of pump [liter per minute], which is determined by pump performance curve
- The pump operating start time should be prior to the sanitary water demand.
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 68
System Set-Up
9. System Set-Up
As
is designed to satisfy various installation environment, it is important to set up
system correctly. If not configured correctly, improper operation or degrade of performance can be
expected.
DIP Switch Setting
CAUTION
Turn off electric power supply before setting DIP switch
• Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock.
General Information
ON
1
2
3
4
5
6
7
8
OFF
OFF is selected
ON is selected
68 Air-to-Water Heat Pump
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System Set-Up
Description
Role when central
controller is equipped
Setting
1
As Master
1
As Slave
2
Indoor unit + Outdoor unit
is installed
3
2
Accessory installation
information
3
2
3
Emergency operation
Level
Indoor unit + Outdoor unit
+ DHW tank
is installed
Default
1
2
3
Indoor unit + Outdoor unit
+ DHW tank
+ Solar thermal system
is installed
4
High temperature cycle
4
Low temperature cycle
5
External water pump is
NOT installed
5
External water pump is
installed
6
Full capacity is uesd
4
External water pump
installation information
5
7
6
Selecting electric
heater capacity
7
6
7
Thermostat installation
information
Half capacity is uesd
6
7
Electric heater is not used
8
Thermostat is NOT installed
8
Thermostat is installed
8
Installation Manual 69
ENGLISH
DIP Switch Information
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 70
System Set-Up
Emergency Operation
• Definition of terms
- Trouble : a problem which can stop system operation, and can be resumed temporally under
limited operation without certificated professional's assist.
- Error : problem which can stop system operation, and can be resumed ONLY after certificated
professional's check.
- Emergency mode : temporary heating operation while system met Trouble.
• Objective of introducing 'Trouble'
- Not like airconditioning product, Air-to-Water heat pump is generally operation in whole winter
season without any system stopping.
- If system found some problem, which is not critical to system operating for yielding heating
energy, the system can temporarily continue in emergency mode operation with end user's
decision.
• Classified Trouble
- Trouble is classified two levels according to the seriousness of the problem : Slight Trouble and
Heavy trouble
- Slight Trouble : a problem is found inside the indoor unit. In most case, this trouble is
concerned with sensor problems. The outdoor unit is operating under emergency mode
operation condition which is configured by DIP switch No. 4 of the indoor unit PCB.
- Heavy trouble : a problem is found inside the outdoor unit. As the outdoor unit has problem, the
emergency mode operation is performed by electric heater located in the indoor unit.
- Option Trouble : a problem is found for option operation such as water tank heating. In this
trouble, the troubled option is assumed as if it is not installed at the system.
• Emergency operation level
- When system met trouble, it stops operation and wait for user’s decision : Calling service center
or starting emergency operation.
- To start emergency operation, user simply push ON / OFF button once more.
- Two different levels are prepared for emergency operation : High temperature cycle and low
temperature cycle.
- In emergency operation mode, user can not adjust target temperature.
DIP
Switch
Target
Leaving Water
Temperature
Target
Room Air
Temperature
Target
DHW
Temperature
High temperature cycle
OFF
50°C
24°C
80°C
Low temperature cycle
ON
30°C
19°C
50°C
70 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 71
System Set-Up
• Emergency operation is not automatically restarted after main electricity power is reset.
- In normal condition, the product operating information is restored and automatically restarted after
main electricity power is reset.
- But in emergency operation, automatic re-start is prohibited to protect the product.
- Therefore, user must restart the product after power reset when emergency operation has been
running.
Installation Manual 71
ENGLISH
• Duplicated trouble : Option trouble with slight or heavy trouble
- If option trouble is occurred with slight (or heavy) trouble at the same time, the system puts higher
priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is occurred.
- Therefore, sometimes DHW heating can be impossible in emergency operation mode.
When DHW is not warming up while emergency operation, please check if DHW sensor and
related wiring are all Ok.
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 72
System Set-Up
Installer Setting
How to enter installer setting mode
• In the menu screen, press [<,>(left/right)] button to select the setting category, and press [∧(up)]
button for 3 seconds to enter the password input screen for the installer setting.
• Input the password and press [OK] button to move to the installer setting list.
CAUTION
The installer setting mode is the mode to set the remote controller’s detail function. If the installer
setting mode is incorrectly set, it may cause product failure, user’s injury, or property damage. It
must be set by the installation specialist with the installation license, and if it is installed or
changed without installation license, all problems caused will be the responsibility of the installer,
and may void the LG warrenty.
OK
OK
h Installer setting password
Main screen ’ menu ’ setting ’ service ’ RMC version information ’ SW Version
Example) SW version : 1.00.1 a
In the above case, the password is 1001.
Note:
Some categories of the installer setting menu may not be available depending on the product
function or the menu name may be different.
72 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 73
System Set-Up
ENGLISH
Summary
• You can set the product user functions.
• Some functions may not be displayed/operated in some product types.
Test
Disable 3 minute Delay
Remote sensor active
Celsius / Fahrenheit Switching
Description
Factory use only
Connection information about remote air sensor
Display temperature in Celsius or Fahrenheit
Temp. sensor selection
Selection for setting temperature as air temperature or leaving water temperature
Dry Contact Mode
Air cooling set temp.
Setting dry contact auto start option.
Adjusting range of 'Setting Air Temperature' in cooling mode
Water cooling set temp
Adjusting range of 'Setting Leaving Water Temperature' in cooling mode
Air heating set temp.
Water heating set temp
Adjusting range of 'Setting Air Temperature' in heating mode
Adjusting range of 'Setting Heating Flow Temperature' in heating mode
DHW set temp.
Adjusting range of 'Setting DHW tank Heating Flow Temperature' in domestic hot
water tank heating mode
Screed drying
After installing water pipes for under floor heating, user can select screed drying
mode for curing the cement
Heater on temperature
Setting for using Step 1 or 2 capacity of electric heater
Water supply off temp. during cooling
Determine leaving water temperature when the unit is turned off.
This funtion is used for preventing condensation on the floor in cooling mode
min. and max. of outdoor temp. for
auto mode
Setting outdoor Min/Max temperature for auto mode
min. and max. of Indoor air temp. for
auto mode
Setting indoor Min/Max temperature for auto mode
min. and max. of LWT for auto mode
Tank disinfection setting 1
Tank disinfection setting 2
Tank setting 1
Tank setting 2
Heater priority
Setting heating flow Min/Max temperature for auto mode
Setting start/maintain time for pasteurisation
Setting pasteurisation temperature
Setting start temperature for operation
Setting maintain temperature for operation
Determine electric heater and water heater on and off
DHW time setting
Determine follow time duration : operation time of domestic hot water tank heating,
stop time of domestic hot water tank heating, and delay time of DHW tank heater
operating
Note: Some contents may not be displayed depending on DIP switch setting in the main PCB assembly 1.
Installation Manual 73
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 74
System Set-Up
Common Setting
• 3 Minutes Delay
Factory use only.
• Remote sensor active
If user connects remote air sensor to control the product by room air temperature, the connection
information should be notified to the product.
Note : If remote air sensor is connected but this function code is not set correctly, the product can
not be controlled by room air temperature.
• Celsius / Fahrenheit Switching
Temperature is displayed in Celsius or Fahrenheit.
• Temp. sensor selection
The product can be operated according to air temperature or leaving water temperature. The
selection for setting temperature as air temperature or leaving water temperature is determined.
Note : Air temperature as setting temperature is ONLY available when Remote Air Sensor
Connection is enabled and Remote Air Sensor Connection is set as 02.
• Dry Contact Mode
This function allows the Dry contact-indoor unit operate under Auto Run mode or Manual mode with
remote control panel.
74 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 75
System Set-Up
• Air cooling set temp.
Determine cooling setting temperature range when air temperature is selected as setting
temperature.
Only available when remote air temperature sensor is connected.
• Accessory PQRSTA0 should be installed.
• Also, Remote air sensor connection should be set properly.
• Water cooling set temp
Determine cooling setting temperature range when leaving water temperature is selected as
setting temperature.
Water condensation on the floor
• While cooling operation, it is very important to keep leaving water temperature higher than
16 °C. Otherwise, dew condensation can be occurred on the floor.
• If floor is in humid environment, do not set leaving water temperature below 18 °C.
Water condensation on the radiator
• While cooling operation, cold water may not flow to the radiator. If cold water enters to the
radiator, dew generation on the surface of the radiator can be occurred.
• Air heating set temp.
Determine heating setting temperature range when air temperature is selected as setting
temperature.
CAUTION
Only available when remote air temperature sensor is connected.
• Accessory PQRSTA0 should be installed.
• Also, Remote air sensor connection should be set properly.
• Water heating set temp
Determine heating setting temperature range when leaving water temperature is selected as
setting temperature.
• DHW set temp.
Determine heating setting temperature range of water tank leaving water.
Only available when DHW tank feature is installed.
• DHW tank and DHW tank kit should be installed.
• DIP switch No. 2 and 3 should be set properly.
• Screed drying
After installing water pipes for under floor heating, user can select screed drying mode for curing the
cement.
Installation Manual 75
ENGLISH
Temperature range setting
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 76
System Set-Up
Temperature Control Parameter Setting
• Heater on temperature
Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-ON’ :
- Heater on temperature : outdoor air temperature where half capacity of electric heater starts
operation.
- Not used.
- Example : If Heater on temperature is set as ‘-1’ and DIP switch No 6. and 7 is set as ‘OFF-ON’,
then half capacity of electric heater will start operation when outdoor air temperature is below 1 °C and current leaving water temperature or room air temperature is much belower than target
leaving water temperature or target room air temperature.
Using Full capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-OFF’ :
- Heater on temperature
- Not used.
- Example : If Heater on temperature is set as '-1' and DIP switch No 6. and 7 is set as 'OFF-OFF',
then full capacity of electric heater will start operation when outdoor air temperature is below -1 °C
and current leaving water temperature or room air temperature is much belower than target
leaving water temperature or target room air temperature.
• Water supply off temp. during cooling
Determine leaving water temperature when the product is turned off. This function is used fr
preventing condensation on the floor in cooling mode.
- Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed.
- FCU : determines if FCU is installed or not.
- Example : If Stop temp. is set as ‘10’ and FCU is ’Use’ and actually FCU is NOT installed in the
water loop, the unit stop operation in cooling mode when the leaving water temperature is below
10 °C.
- Example : If Stop temp. is set as ‘10’ and FCU is ’Not use’ and actually FCU is installed in the
water loop, the Stop temp. is not used and the unit do NOT stop operation in cooling mode when
the leaving water temperature is below 10 °C.
FCU Installation
• If FCU is used, related 2way valve should be installed and connected to the indoor unit PCB.
• If FCU is set as ‘Not use’ but FCU or 2way valve is NOT installed, the unit can do abnormal
operation.
76 Air-to-Water Heat Pump
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System Set-Up
Water temperature
DHW
Heating
Coolinag
min. of outdoor temp.
Outdoor
air temperature
max. of outdoor temp.
Installation Manual 77
ENGLISH
• Seasonal auto mode
Weather dependent mode in heating and cooling, auto change over in heating, cooling and DHW
only depending on the pre-set interval of temperature.
- Change the mode to auto mode
- Priority in scheduler
(In scheduling, it could be to change mode)
- 4 outdoor temp. set points, 4 Room1 Temp. set points, 4 Room2 temp. set points
- It could be controlled by 11 steps (-5~+5)
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 78
System Set-Up
• Tank disinfection setting 1, 2
Disinfection operation is special DHW tank operation mode to kill and to prevent growth of viruses
inside the tank.
- Disinfection active : Selecting enable or disable of disinfection operation.
- Start date : Determining the date when the disinfection mode is running.
- Start time : Determining the time when the disinfection mode is running.
- Max temp. : Target temperature of disinfection mode.
- Duration time : Duration of disinfection mode.
Temperature profile
of Disinfection operation
Water temperature
(Inside DHW)
Max temp
Duration time
Start time
Time
Vales of Tank disinfection setting
• If Disinfection active is set as ’ Not use’, that is ‘disable disinfection mode’, Start date and Start
time is not used.
• When Disinfection active is set as ’Use’, that is ‘enable disinfection mode’, Start date is
displayed at the position of Disinfection active and Start time is displayed at the position of Start
date.
DHW heating should be enable
• If Disinfection active is set as ’ Not use’, that is ‘disable disinfection mode’, Start date and Start
time is not used.
• When Disinfection active is set as ’Use’, that is ‘enable disinfection mode’, Start date is
displayed at the position of Disinfection active and Start time is displayed at the position of Start
date.
78 Air-to-Water Heat Pump
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System Set-Up
Descriptions for each parameters are as following.
- Min temp. : temperature gap from Max outdoor temp.
- Max outdoor temp. : maximum temperature generated by AWHP compressor cycle.
- Example : If Min temp. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see the
graph) will be started when the water tank temperature is below 45 °C…. If temperature is above
48 °C…, then Session B will be started.
- Hysteresis : temperature gap from target DHW temperature. This value is required to frequent On
and Off of water tank heater.
- Heating priority : Determining heating demand priority between DHW tank heating and under floor
heating.
- Example : If user’s target temperature is set as ’70’ and Hysteresis is set as ‘3’, then the water
tank heater will be turned off when the water temperature is above 73 °C. The water tank heater
will be turned on when the water temperature is below 70 °C.
- Example : If Heating priority is set as ‘DHW’, that means heating priority is on DHW heating, DHW
is heated by AWHP compressor cycle and water heater. In this case the under floor can not be
heated while DHW heating. On the other hand, if the Heating priority is set as ‘Floor heating’, that
means heating priority is on under floor heating, DHW tank is ONLY heated by water heater. In
this case the under floor heating is not stopped while DHW is heated.
Water temperature
(Inside sanitary water tank)
Water heater off
temperature
Hysteresis
Target DHW
temperature (set by user)
Max outdoor temp.
Min temp.
Starting temperature
of DHW heating
Session A
Session C
Session B
Session D
Time
Session A : Heating by AWHP compressor cycle and water heater
Session B : Heating by water heater
Session C : No heating (Water heater is Off)
Session D : Heating by water heater
DHW heating does not operate when it is disabled.
Installation Manual 79
ENGLISH
• Tank setting 1, 2
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 80
System Set-Up
• Heater priority
- Heater priority : determine electric heater and sanitary tank heater on and off.
- Example : If Heater priority is set as ‘Main+Boost heater ON’, then electric heater and DHW tank
heater are on and off according to control logic. If Heater priority is set as ‘Boost heater only ON’,
then electric heater is never turned on and only water heater is on and off according to control
logic.
• DHW time setting
Determine following time duration : operation time of DHW tank heating, stop time of DHW tank
heating, and delay time of DHW tank heater operating.
- Active time : This time duration defines how long time DHW tank heating can be continued.
- Stop time : This time duration defines how long time DHW tank heating can be stopped. It is also
regarded as time gap between DHW tank heating cycle.
- Boost heater delay time : This time duration defines how long time DHW tank heater will not be
turned on in DHW heating operation.
- Example of timing chart :
1
DHW tank
heating is enabled 0
1
DHW tank heater
is enabled 0
DHW tank 1
heating is required
0
2B.02
2B.01
2B.02
2B.01
2B.02
DHW tank 1
heating operation 0
1
DHW tank
heater operation 0
❈ 1=active / 0=not active
80 Air-to-Water Heat Pump
2B.03
2B.03
Time
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 81
Check Points, Maintenance and Troubleshooting
If everything is going well until now, it is time to start the operation and to take advantages of
.
Before starting operation, pre-check points are described in this chapter. Some comments about
maintenance and how to do troubleshooting are presented.
Check List before Starting Operation
CAUTION
Turn off the power before changing wiring or handling product
No
Category
Item
Check Point
Field wiring
• All switches having contacts for different poles should be wired
tightly according to regional or national legislation.
• Only qualified person can proceed wiring.
• Wiring and local-supplied electric parts should be complied with
European and regional regulations.
• Wiring should be following the wiring diagram supplied with the
product.
Protective devices
• Install ELB (earth leakage breaker) with 30mA.
• ELB inside the control box of the indoor unit should be turned on
before starting operation.
3
Earth wiring
• Earth should be connected. Do not earth to gas or city water pipe,
metallic section of a building, surge absorber, etc.
4
Power supply
• Use dedicated power line.
5
Terminal block wiring
6
Charged water pressure
• After water charging, the pressure gage (in front of the indoor unit)
should indicate 2.0~2.5 bar. Do not exceed 3.0 bar.
Air purge
• During water charging, air should be taken out through the hole of
the air purge.
• If water does not splash out when the tip (at the top of the hole) is
pressed, then air purging is not completed yet. If well purged, the
water will splash out like fountain.
• Be careful when testing air purge. Splashed water may make your
dress wet.
1
2
Electricity
7
Water
• Connections on the terminal block (inside the control box of the
indoor unit) should be tightened.
8
Shut-off valve
• Two shut-off valves (located at the end of water inlet pipe and water
outlet pipe of the indoor unit) should be open.
9
By-pass valve
• By-pass valve should be installed and adjusted to secure enough
water flow rate. If water flow rate is low, flow switch error (CH14)
can be occurred.
10
Hang to the wall
• As the indoor unit is hung on the wall, vibration or noise can be
heard if the indoor unit is not fixed tightly.
• If the indoor unit is not fixed tightly, it can fall down during operation.
11
Parts inspection
• There should be no apparently damaged parts inside the indoor unit.
12
13
Product Installation
Refrigerant leakage
• Refrigerant leakage degrades the performance. If leakage found,
contact qualified LG air conditioning installation person.
Drainage treatment
• While cooling operation, condensed dew can drop down to the
bottom of the indoor unit. In this case, prepare drainage treatment
(for example, vessel to contain condensed dew) to avoid water drop.
Installation Manual 81
ENGLISH
10. Check Points, Maintenance and Troubleshooting
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 82
Check Points, Maintenance and Troubleshooting
Maintenance
To assure best performance of
, it is required to perform periodical check and maintenance.
It is recommended to proceed following check list for once a year.
CAUTION
Turn off the power before proceeding maintenance
No
Category
Item
Check Point
Water pressure
• In normal state, the pressure gage (in front of the indoor unit) should
indicate 2.0~2.5 bar.
• If the pressure is less than 0.3 bar, please recharge the water.
Strainer(Water filter)
• Close the shut-off valves and disassemble strainer. Then wash the
strainer to make it clean.
• While disassembling the strainer, be careful for water flood out.
Safety valve
• Open the switch of the safety valve and check if water is flood out
through the drain hose.
• After checking, close the safety valve.
Terminal block wiring
• Look and inspect if there is loosen or defected connection on the
terminal block.
1
2
Water
3
4
Electricity
82 Air-to-Water Heat Pump
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Check Points, Maintenance and Troubleshooting
If
operates not properly or it does not start operation, please check following list.
CAUTION
Turn off the power before proceeding troubleshooting
Troubleshooting for Problem while Operation
No
Problem
Reason
Solution
• Set target temperature correctly.
• Setting target temperature • Check if temperature is water-based or air-based. See 'Remote
is not proper.
sensor active' and 'Temp. sensor selection' in Chapter 6.
1
2
3
4
5
• Charged water is not
enough.
• Check pressure gage and charge more water until pressure gage
is indicating 200~250 kPa.
• Water flow rate is low.
• Check if strainer gathers too much particles. If so, strainer should
be cleaned.
• Check if pressure gage indicates above 4 Bar.
• Check if water pipe is getting closed due to stacked particles or
lime.
Heating or cooling is not
satisfactory.
• Water inlet temperature is • If water inlet temperature is above 55 °C, the unit does not
Although electric power
too high.
operated for the sake of system protection.
supply is OK (remote
controller displays
•
• Water inlet temperature is If water inlet temperature is below 5 °C, the unit does not operated
information), the unit does too low.
for the sake of system protection. Wait while unit warms up the
not start working.
water inlet temperature.
Water pump noise.
• Air purging is not
completely finished.
• Open the cap of air purge and charge more water until pressure
gage is indicating 200~250 kPa.
• If water does not splash out when the tip (at the top of the hole) is
pressed, then air purging is not completed yet. If well purged, the
water will splash out like fountain.
• Water pressure is low.
• Check if pressure gage indicates above 30 kPa.
• Check if the expansion tank and pressure gage operates well.
• Too much water is
Water is flood out through charged.
drain hose.
• Expansion tank is
damaged.
• Flood out the water by opening the switch of the safety valve until
pressure gage is indicating 200~250 kPa.
• Thermal protector of
water tank heater is
activated.
• Open the side panel of the DHW tank and push the reset button of
the thermal protector. (for more detail information, please refer to
installation manual of DHW tank.)
• DHW heating is
disabled.
• Select DHW Heating Operation and identify if icon is displayed on
the remote controller.
DHW is not hot.
• Replace the expansion tank.
Installation Manual 83
ENGLISH
Troubleshooting
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 84
Check Points, Maintenance and Troubleshooting
Troubleshooting for Error Code
Code
No.
Description
1
Problem in remote room air sensor
2
Problem in refrigerant (inlet side) sensor
6
Problem in refrigerant (outlet side) sensor
8
Problem in water tank sensor
16
Problems in sensors
17
Problem in water-inlet sensor
18
Problem in water-outlet sensor
19
Problem in water-interim sensor
10
3
5
14
15
20
Normal Condition
• Incorrect connection between
sensor and PCB(Heater).
• PCB(Heater) fault
• Sensor fault
• Resistance: 10 kΩ at 25
centigrade (unplugged) → for
Remote room air sensor
• Resistance: 5 kΩ at 25 centigrade
(unplugged) → for all sensors
EXCEPT remote room air sensor
• Voltage: 2.5 V DC at 25 centigrade
(plugged) (for all sensors)
• Refer resistance-temperature table
to check in different temperature
BLDC Water pump Lock
Restriction of BLDC Water pump
• BLDC Water pump defect /
assembly condition abnormal
• Fan lock by foreign material
Bad communication between remote
controller and unit.
• Incorrect connection between
sensor and PCB(Heater)
• PCB(Heater) fault
• Sensor fault
• Wire connection between remote
controller and Main PCB
assembly(Heater) should be tight
• Output voltage of PCB should be
12 V DC
Bad communication between Main PCB
assembly(Heater) and Main PCB
assembly(Inverter) of the unit.
• The connector for transmission is
disconnected
• The connecting wires are
misconnected
• Wire connection between remote
• The communication line is broken control panel and Main PCB
• Main PCB assembly(Inverter) is
assembly(Heater) should be tight.
abnormal
• Main PCB assembly(Heater) is
abnormal
PCB program (EEPROM) fault
• Electrical or mechanical damage a
• This error can not be permitted
the EEPROM
Problem in flow switch
• Flow switch is open while internal • Flow switch should be closed while
water pump is working
internal water pump is working or
• Flow switch is closed while internal DIP switch No. 5 of Main PCB
water pump is not working
assembly(Heater) is set as on
• Flow switch is open while DIP
• Flow switch should be open while
switch No. 5 of Main PCB
internal water pump is not working
assembly(Heater) is set as on
Water pipe overheated
• Abnormal operation of electric
heater
• Leaving water temperature is
above 57 ℃
• If there is no problem in electric
heater control, possible maximum
leaving water temperature is 57 ℃
Thermal fuse is damaged
• Thermal fuse is cut off by
abnormal overheating of internal
electric heater
• Mechanical fault at thermal fuse
• Wire is damaged
• This error will not be happened if
temperature of electric heater tank
is below 80 ℃
53
9
Cause
84 Air-to-Water Heat Pump
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Check Points, Maintenance and Troubleshooting
ENGLISH
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 levels, 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 include 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.
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: 0.44kg/m3(R410A)
n Calculate refrigerant concentration
Total amount of replenished refrigerant in refrigerant facility (kg)
Refrigerant concentration =
Capacity of smallest room where indoor unit is installed (m3)
Installation Manual 85
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86 Air-to-Water Heat Pump
1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 100
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