installation manual - Iris Hellas
ENGLISH
ITALIANO
ESPAГ‘OL
FRANÇAIS
INSTALLATION MANUAL
TYPE : Air-to-Water Heat Pump
P/NO : MFL63285302
www.lg.com
PORTUGUГЉS
• 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.
DEUTSCH
AIR CONDITIONER
Air-to-Water Heat Pump Installation Manual
TABLE OF CONTENTS
ITEMS INSIDE PRODUCT BOX ..........................................................................................5
INDOOR UNIT BOX ......................................................................................................................5
OUTDOOR UNIT BOX ..................................................................................................................5
PREFACE.............................................................................................................................6
1. SAFETY PRECAUTION...................................................................................................7
WARNING .....................................................................................................................................7
INSTALLATION WARNING .....................................................................................................7
OPERATION WARNING .........................................................................................................8
CAUTION ......................................................................................................................................9
INSTALLATION CAUTION ......................................................................................................9
OPERATION CAUTION ..........................................................................................................9
2. GENERAL INFORMATION ............................................................................................10
MODEL INFORMATION ..............................................................................................................11
ACCESSORIES ..........................................................................................................................12
ACCESSORIES SUPPORTED BY LG Electronics ...............................................................12
ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..............................................12
TYPICAL INSTALLATION EXAMPLE ..........................................................................................13
CASE 1..................................................................................................................................13
CASE 2..................................................................................................................................14
CASE 3 .................................................................................................................................15
CYCLE DIAGRAM ......................................................................................................................16
REFRIGERANT CYCLE........................................................................................................16
WATER CYCLE.....................................................................................................................18
PARTS AND DIMENSIONS ........................................................................................................19
INDOOR UNIT (EXTERNAL) ................................................................................................19
INDOOR UNIT (INTERNAL)..................................................................................................21
OUTDOOR UNIT (EXTERNAL) ............................................................................................21
CONTROL PARTS ......................................................................................................................24
CONTROL BOX : INDOOR UNIT..........................................................................................24
CONTROL PANEL ................................................................................................................25
WIRING DIAGRAM : INDOOR UNIT.....................................................................................25
CIRCUIT DIAGRAM : INDOOR UNIT ...................................................................................25
WIRING DIAGRAM : OUTDOOR UNIT.................................................................................25
WIRING DIAGRAM : INDOOR UNIT AND OUTDOOR UNIT (INCL. FIELD WIRING) .........26
2 Air-to-Water Heat Pump
3. INSTALLATION OF OUTDOOR UNIT ...........................................................................30
4. INSTALLATION OF INDOOR UNIT ...............................................................................32
CONDITIONS WHERE INDOOR UNIT IS INSTALLED..............................................................32
GENERAL CONSIDERATIONS ............................................................................................32
SERVICE SPACE..................................................................................................................32
MOUNTING TO WALL ..........................................................................................................33
WATER VOLUME AND WATER PUMP CAPACITY .............................................................34
WATER VOLUME AND EXPANSION VESSEL PRESSURE................................................35
WATER QUALITY .................................................................................................................36
CONDITIONS IF ACCESSORIES ARE INSTALLED..................................................................37
THERMOSTAT ......................................................................................................................37
REMOTE AIR TEMPERATURE SENSOR ........................................................................... 37
SANITARY WATER TANK AND SANITARY WATER TANK KIT / SOLAR THERMAL KIT ...38
3WAY VALVE(2WAY VALVE) ................................................................................................40
5. PIPING AND WIRING FOR OUTDOOR UNIT ...............................................................41
REFRIGERANT PIPING .............................................................................................................41
CONSTRAINTS IN PIPE LENGTH AND ELEVATION ..........................................................41
PREPARATION FOR PIPING ...............................................................................................42
CONNECTING PIPE TO INDOOR UNIT ..............................................................................43
CONNECTING PIPE TO OUTDOOR UNIT ..........................................................................43
ELECTRICAL WIRING................................................................................................................46
WIRE SPECIFICATION.........................................................................................................46
CIRCUIT BREAKER SPECIFICATION .................................................................................47
WIRING PROCEDURE FOR POWER CABLE AND CONNECTING CABLE.......................47
FINALIZING ................................................................................................................................49
PIPE FORMING ....................................................................................................................49
LEAKAGE TEST AND EVACUATION.........................................................................................50
PREPARATION .....................................................................................................................50
LEAKAGE TEST ...................................................................................................................50
EVACUATION........................................................................................................................51
6. PIPING AND WIRING FOR INDOOR UNIT ...................................................................52
WATER PIPING AND WATER CIRCUIT CONNECTION............................................................52
GENERAL CONSIDERATIONS ............................................................................................52
WATER PIPING AND WATER CIRCUIT CONNECTION......................................................52
WATER CHARGING .............................................................................................................54
PIPE INSULATION ................................................................................................................54
Installation Manual 3
ENGLISH
CONDITIONS WHERE OUTDOOR UNIT IS INSTALLED..........................................................30
DRILL A HOLE IN THE WALL.....................................................................................................30
INSTALLATION AT SEASIDE .....................................................................................................31
SEASONAL WIND AND CAUTIONS IN WINTER ......................................................................31
ELECTRICAL WIRING................................................................................................................55
GENERAL CONSIDERATION...............................................................................................55
TERMINAL BLOCK INFORMATION .....................................................................................56
CONNECTING WITH OUTDOOR UNIT ...............................................................................58
ELECTRIC HEATER WIRING ...............................................................................................58
7. ACCESSORIES INSTALLATION...................................................................................59
BEFORE INSTALLATION ...........................................................................................................59
THERMOSTAT ............................................................................................................................59
GENERAL INFORMATION ...................................................................................................59
HOW TO WIRE THERMOSTAT ............................................................................................60
FINAL CHECK.......................................................................................................................61
SANITARY WATER TANK AND SANITARY WATER TANK KIT/SOLAR THERMAL KIT ...........62
GENERAL INFORMATION ...................................................................................................62
HOW TO INSTALL SANITARY WATER TANK ......................................................................63
HOW TO INSTALL SANITARY WATER TANK KIT ...............................................................64
HOW TO WIRE SANITARY WATER TANK HEATER............................................................66
HOW TO INSTALL SOLAR THERMAL KIT...........................................................................67
DRY CONTACT...........................................................................................................................67
REMOTE TEMPERATURE SENSOR.........................................................................................67
3WAY VALVE ..............................................................................................................................68
HOW TO WIRE 3WAY VALVE ..............................................................................................68
FINAL CHECK.......................................................................................................................68
2WAY VALVE ..............................................................................................................................69
GENERAL INFORMATION ...................................................................................................69
HOW TO WIRE 2WAY VALVE ..............................................................................................69
FINAL CHECK.......................................................................................................................69
8. SYSTEM SET-UP ...........................................................................................................70
DIP SWITCH SETTING...............................................................................................................70
GENERAL INFORMATION ...................................................................................................70
DIP SWITCH INFORMATION................................................................................................71
CONTROL PANEL SETTING......................................................................................................74
HOW TO ENTER INSTALLER SETTING MODE..................................................................74
SUMMARY ............................................................................................................................76
COMMON SETTING .............................................................................................................81
TEMPERATURE RANGE SETTING .....................................................................................82
TEMPERATURE CONTROL PARAMETER SETTING AND ETC.........................................83
9. CHECK POINTS, MAINTENANCE AND TROUBLESHOOTING..................................88
CHECK LIST BEFORE STARTING OPERATION.......................................................................88
MAINTENANCE ..........................................................................................................................89
TROUBLESHOOTING ................................................................................................................90
TROUBLESHOOTING FOR PROBLEM WHILE OPERATION.............................................90
4 Air-to-Water Heat Pump
Items inside product box
Items Inside Product Box
Item
Image
Indoor unit
Installation
Manual
INSTALLATION MANUAL
AIR CONDITIONER
INDOOR UNIT BOX
Quantity
Item
Image
Quantity
1
Shut-off valve
2
1
Installation
plate
1
1
Installation
Sheet
1
• 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.
TYPE :
www.lg.com
Owner's
Manual
OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : WALL MOUNTED
www.lg.com
OUTDOOR UNIT BOX
Item
Outdoor unit
U3 Chassis
(Product heating capacity :
12kW,14kW,16kW)
Outdoor unit
UE1 Chassis
(Product heating capacity :
9kW)
Outdoor Unit
AHUW096A1(U4 Chassis)
(Product heating capacity :
9kW)
Image
Quantity
1
1
1
Installation Manual 5
ENGLISH
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.
Preface
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
Contents
• Warning and Caution concerned with safety.
• This chapter is directly related with human safety. We STRONGLY
recommend reading this chapter carefully.
• 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 7
• Information about supported accessories
• Specification, Constraints, and wiring are described.
• Before purchasing accessories, please find supported
proper one.
Chapter 8
• Test operation and check point while test running.
Chapter 9
• Check points before starting operation are explained.
• Troubleshooting, maintenance, and error code list are presented
problems.
specification to buy
to correct
REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.
TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE
www.lgservice.com
6 Air-to-Water Heat Pump
Safety Precautions
1. Safety Precautions
This symbol indicates the possibility of death or serious injury.
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.
n 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.
Install the panel and the cover
of control box securely.
For electrical work, contact
the dealer, seller, a qualified
electrician, or an Authorized
Service Center.
• There is risk of fire or electric
shock.
Always install a dedicated
circuit and breaker.
• There is risk of fire or electric
shock.
• Improper wiring or installation
may cause fire or electric
shock
Do not modify or extend the
power cable.
Do not install, remove, or
reinstall the unit by yourself
(customer).
• There is risk of fire or electric
shock.
• There is risk of fire, electric
shock, explosion, or injury
Always ground the product.
• There is risk of fire or electric
shock.
Use the correctly rated
breaker or fuse.
• There is risk of fire or electric
Be cautious when
unpacking and installing the
product.
• Sharp edges could cause injury.
Especially careful on the product
edges and the fins on the heat
exchanger.
Installation Manual 7
ENGLISH
To prevent injury to the user or other people and property damage, the following instructions must be
followed.
n Be sure to read before installing the product.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified
by the following indications.
Safety Precautions
For installation, always
contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric
shock, explosion, or injury.
Do not install the product on
a defective installation
stand.
• It may cause injury, accident,
or damage to the product.
Be sure the installation area
does not deteriorate with
age.
• If the base collapses, the product
could fall with it, causing property
damage, product failure, and
personal injury.
n Operation
Do not let the product run for a
long time when the humidity is
very high and a door or a
window is left open.
Take care to ensure that
power cable could not be
pulled out or damaged
during operation.
Do not place anything on
the power cable.
• Moisture may be condensed
and wet or damage furniture.
• There is risk of fire or electric
shock.
• There is risk of fire or electric
shock.
Do not plug or unplug the power
supply plug during operation.
Do not touch (operate) the
product with wet hands.
Do not place a heater or other
appliances near the power cable.
• There is risk of fire or electric
shock.
• There is risk of fire or electric
shock.
• There is risk of fire or electric
shock.
Do not allow water to run
into electric parts.
Do not store or use flammable
gas or combustibles near the
product.
Do not use the product in a
tightly closed space for a
long time.
• There is risk of fire, failure of
the product, or electric shock.
• There is risk of fire or failure
of product.
When flammable gas leaks,
turn off the gas and open a
window for ventilation
before turn the product on.
If strange sounds, or small or
smoke comes from product, turn
the breaker off or disconnect the
power supply cable.
Stop operation and close the window
in storm or hurricane. If possible,
remove the product from the window
before the hurricane arrives.
• There is risk of electric shock
or fire.
• There is risk of property
damage, failure of product, or
electric shock.
• There is risk of explosion or
fire.
Do not open the front cover of
the indoor unit while operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)
When the product is soaked
(flooded or submerged),
contact an Authorized
Service Center.
• There is risk of physical injury, • There is risk of fire or electric
electric shock, or product
shock.
failure.
Ventilate the product from
time to time when operating
it together with a stove, etc.
• There is risk of fire or electric
shock.
8 Air-to-Water Heat Pump
Turn the main power off
when cleaning or
maintaining the product.
• There is risk of electric shock.
• Oxygen deficiency could
occur.
Be cautious that water could
not be poured to the product
directly.
• There is risk of fire, electric
shock, or product damage.
Take care to ensure that
nobody could step on or fall
onto the outdoor unit.
• This could result in personal
injury and product damage.
Safety Precautions
Special warning about no operation for long-time
ENGLISH
• If the product is not used for long time, we strongly recommend NOT TO
SWITCH OFF THE POWER SUPPLY to the product.
• If power is not supplied, some special product-protecting actions (such as
water pump anti-locking) will not performed.
n Installation
Always check for gas
(refrigerant) leakage after
installation or repair of
product.
• Low refrigerant levels may cause
failure of product.
Do not install the product
where it will be exposed to
sea wind (salt spray)
directly.
• It may cause corrosion on the
product. Corrosion, particularly on
the condenser and evaporator fins,
could cause product malfunction or
inefficient operation.
Do not install the product where the noise
or hot air from the outdoor unit could
damage the neighborhoods.
• It may cause a problem for your neighbors.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
Use two or more people to lift and transport
the product.
• Avoid personal injury.
n Operation
Do not lay on the cooled
floor for long time when the
product is in cooling
operation.
• This could harm to your health.
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 product.
Use a firm stool or ladder
when cleaning or
maintaining the product.
• Be careful and avoid personal
injury.
Do not use the product for
special purposes, such as
preserving foods, works of art,
etc. It is a consumer product, not
a precision refrigeration system.
• There is risk of damage or loss of
property.
Do not step on or put
anything on the product.
(outdoor units)
• There is risk of personal injury
and failure of product.
Do not block the outlet of air
flow.
• It may cause product failure.
Do not insert hands or other
objects into the product
while it is operating.
• There are sharp and moving
parts that could cause personal
injury.
At low outdoor temperature,
the product will display
“CH44”
• It may cause a problem for
product.
Installation Manual 9
General Information
2. 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.
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
—
W
0
9
6
A
0
Series Number(N : Nordic Model)
Chassis Name
Electrical ratings
6 : 1 phase 220-240V AC 50Hz
8 : 3 phase 380-415V AC 50Hz
Heating Capacity (kW)
09 : 9kW
12 : 12kW
14 : 14kW
16 : 16kW
Model Type
W : Inverter Heat Pump
H : Heat Pump
Classification
N : Indoor Unit
U : Outdoor Unit
– : Set
Air-to-Water Heat Pump for R410A
A
H
N
W
0
9
A
0
6
A
0
Series Number
Chassis Name
Heater Capacity (kW)
04 : 4kW
06 : 6kW
Heater Electrical ratings
6 : 1 phase 220-240V AC 50Hz
8 : 3 phase 380-415V AC 50Hz
A : 3 phase 220V AC 50Hz
Heating Capacity (kW)
09 : 9kW 12 : 12kW 14 : 14kW 16 : 16kW
Model Type
W : Inverter Heat Pump H : Heat Pump
Classification
N : Indoor Unit U : Outdoor Unit — : Set
Air-to-Water Heat Pump for R410A
10 Air-to-Water Heat Pump
General Information
Model name and related information
Model Name
Outdoor Unit
Indoor Unit
AH-W096A0
AH-W126A0
AHUW096A0
AHUW126A0
AHNW096A0
AHNW126A0
4(2+2)
AH-W146A0
AH-W166A0
-
AHUW146A0
AHUW166A0
AHNW146A0
AHNW166A0
6(3+3)
AHUW096A1
AHNW09604A1
4(2+2)
AHNW09606A0
6(3+3)
AHNW09A06A0
AHNW09806A0
6(2+2+2)
-
AHUW096AN
-
-
9
8.6
12
17.8
3N~ 380V-415V 50Hz
14
16.1
3N~ 380V-415V 50Hz
16
15.1
3N~ 380V-415V 50Hz
16
14
16.1
15.5гЂЂ
12
14.5
1~ 220V-240V 50Hz
3N~ 220V 50Hz
3N~ 380V-415V 50Hz
14
14
1~ 220V-240V 50Hz
1~ 220V-240V 50Hz
3N~ 220V 50Hz
3N~ 380V-415V 50Hz
12
12
1~ 220V-240V 50Hz
3N~ 220V 50Hz
3N~ 220V 50Hz
3N~ 380V-415V 50Hz
AHNW16606A1
6(3+3)
1~ 220V-240V 50Hz
AHUW148A1
AHNW16A06A1
AHNW16806A1
6(2+2+2)
3N~ 220V 50Hz
3N~ 380V-415V 50Hz
6(3+3)
1~ 220V-240V 50Hz
6(2+2+2)
3N~ 220V 50Hz
3N~ 380V-415V 50Hz
6(3+3)
1~ 220V-240V 50Hz
AHUW166A1
-
AHUW146A2
-
AHUW126A2
AHNW16606A1
AHNW16606A1
AHNW16A06A1
AHNW16806A1
AHNW16606A1
AHNW16A06A1
AHNW16806A1
6(3+3)
6(2+2+2)
6(3+3)
6(2+2+2)
1~ 220V-240V 50Hz
3N~ 380V-415V 50Hz
1~ 220V-240V 50Hz
6(3+3)
AHUW146A1
AHUW126A1
Power Source
(Unit)
9
6(2+2+2)
AHNW16806A1
Cooling(kW) *1
8.6
14
9
AHNW16606A1
AHNW16606A1
AHNW16A06A1
*1
14
14
AHNW16A06A1
AHNW16806A1
AHUW168A1
Capacity
Heating(kW)
9
12
14
16
1~ 220V-240V 50Hz
AHUW128A1
-
Power Source
(Electric Heater)
Built-In Electric
Heater(kW)
1~ 220V-240V 50Hz
*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.
Installation Manual 11
ENGLISH
Set
General Information
Accessories
To extend the functionality of
К»accessories.Кј
, there are various external auxiliary apparatus called as
They are classified by К»accessoriesКј and К»3rd party accessoriesКј according to the manufacturer.
Accessories are presented LG Electronics, and 3rd party accessories are presented by related
manufacturers.
Accessories supported by LG Electronics
Item
Purpose
Sanitary Water Tank Install Kit To operate with sanitary water tank
Model
PHLTA
Remote Air Sensor
To control by air temperature
PQRSTA0
Dry Contact
To receive on & off external signal
PQDSA
Solar Heating Kit
To operate with solar heating system
PHLLA (Limit Temperature : 96в„ѓ)
PHLLB (Limit Temperature : 120в„ѓ)
PHS02060310 : 200 liter, Single Heating Coil,
1Г� 230V 50Hz 3kW Electric Heater
Sanitary Water Tank
To generate and store hot water
PHS02060320 : 200 liter, Double Heating Coil,
1Г� 230V 50Hz 3kW Electric Heater
PHS03060310 : 300 liter, Single Heating Coil,
1Г� 230V 50Hz 3kW Electric Heater
PHS03060320 : 300 liter, Double Heating Coil,
1Г� 230V 50Hz 3kW Electric Heater
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 or 24V AC)
Cooling/Heating type (230V AC or 24V
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
12 Air-to-Water Heat Pump
2 wire,NO(Normal Open) or NC(Normal
Closed) type,230V AC
General Information
Typical Installation Example
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
ENGLISH
If
is installed with pre-existing boiler, the boiler and THERMA V should not be
operated together. If entering water temperature of
is above 55В°C, the system will
stop operation to prevent mechanical damage of the product. For detailed electric wiring and water
piping, please contact authorized installer.
General Information
CASE 2: Connecting Sanitary Water Tank
Outdoor
Indoor
Outdoor Unit
Indoor Unit
Hot water
Fan coil unit
Floor heating loop
Radiator
Sanitary
water
tank
City water
Note:
• Sanitary water tank
- It should be equipped with internal electric heater to generate sufficient heat energy in very cold
season.
• 3way valve
- Type of 3way valve and specification should be complied with chapter 4 and chapter 7 of
installation manual.
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)
General Information
CASE 3: Connecting Solar thermal system
Outdoor
Indoor
ENGLISH
Outdoor Unit
Indoor Unit
Solar heat source
Hot water
Fan coil unit
Floor heating loop
Radiator
Sanitary
water
tank
City water
Note:
• Sanitary water tank
- It should have additional indirect heat exchanger to utilize heat energy by solar thermal system.
• Pump
- Maximum power consumption of pump should be less than 0.25kW.
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
General Information
Cycle Diagram
Refrigerant Cycle(Non-Vapor Injection)
INDOOR UNIT
OUTDOOR UNIT
EEV
LIQUID SIDE
Th2
3-Way
Service Valve
Th6
Th7
Th8
Indoor Unit
Plate Heat
Exchanger
Outdoor Unit
Heat Exchanger
Low Pressure
Switch
Th3
GAS SIDE
3-Way
Service Valve
Th4
Reversing Valve
Accumulator
Th5
COMPRESSOR
High Pressure
Switch
COOLING
HEATING
Description
Category
Indoor Unit
Symbol
Remote air temperature sensor
CN_ROOM
Th2
Th3
Th4
Inlet evaporator temperature sensor
Outlet evaporator temperature sensor
Compressor-suction pipe temperature sensor
Compressor-discharge pipe temperature sensor
CN_PIPE
CN_PIPE/O
CN_TH3
CN_TH3
Th5
Th6
Outdoor Unit
PCB
Connector
Meaning
Th1
Remarks
- Optional accessory (being sold separately)
- Not shown in diagram
- Meaning is expressed based on Cooling
mode.
- Th4 and Th5 are connected at 4 pin type
connector CN_TH3.
Condenser temperature sensor
CN_TH2
Th7
Outdoor air temperature sensor
CN_TH2
- Description is expressed based on Cooling
mode.
- Th6 and Th7 are connected at 4 pin type
connector CN_TH2
Th8*1
EEV
Condenser middle temperature sensor
Electronic Expansion Valve
CN_TH3
- Th8 is connected at 4 pin type connector CN_TH3
CN_LEV1
*1:Applied Model : AHUW128A1, AHUW148A1, AHUW168A1, AHUW096A1, AHUW126A1, AHUW146A1, AHUW166A1
Refrigerant Cycle(Vapor Injection)
INDOOR UNIT
OUTDOOR UNIT
EEV
LIQUID SIDE
Th2
EEV
3-Way
Service Valve
Th6
Phase,
Separator
Th7
Th8
EEV
Indoor Unit
Plate Heat
Exchanger
Outdoor Unit
Heat Exchanger
Low Pressure
Switch
Th3
GAS SIDE
3-Way
Service Valve
Th4
Reversing Valve
Accumulator
Th5
COMPRESSOR
High Pressure
Switch
COOLING
HEATING
Description
Category
Indoor Unit
Outdoor Unit
Symbol
Meaning
PCB
Connector
Th1
Remote air temperature sensor
CN_ROOM
Th2
Th3
Th4
Th5
Inlet evaporator temperature sensor
Outlet evaporator temperature sensor
Compressor-suction pipe temperature sensor
Compressor-discharge pipe temperature sensor
CN_PIPE
CN_PIPE/O
CN_TH3
CN_TH3
Th6
Condenser temperature sensor
CN_TH2
CN_TH2
Th7
Outdoor air temperature sensor
Th8
Condenser middle temperature sensor
EEV
Electronic Expansion Valve
16 Air-to-Water Heat Pump
CN_TH3
CN_LEV1
CN_LEV2
CN_LEV3
Remarks
- Optional accessory (being sold separately)
- Not shown in diagram
- Meaning is expressed based on Cooling mode.
- Th4 and Th5 are connected at 4 pin type connector
CN_TH3.
- Description is expressed based on Cooling mode.
- Th6 and Th7 are connected at 4 pin type connector
CN_TH2
- Th8 is connected at 4 pin type
connector CN_TH3
- Adjusting mass flow rate of circulating
refrigerant or injecting refrigerant
Basic installation
(
(IDU
+ ODU))
Underfloor
Heating
Radiator
Fan
Coil
Unit
Sanitary water tan
k is installed
(Sanitary water tan
k kit is necessary)
Solar thermal syst
em is connected
(Solar thermal kit i
s necessary)
ENGLISH
Solar
Thermal
Componets
General Information
Water cycle
Installation Manual 17
General Information
Description
Category
Symbol
TH1
TH2
Indoor Unit
TH3
TH4
TH5
F/S
CN_PIPE/OUT
CN_PIPE
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
W_PUMP1
Internal Water Pump
CN_W/PUMP(A)
EXP/TANK
Expansion Tank
Remote Air temperature sensor
CN_ROOM
- Operating power(230V AC 50Hz) of internal
water pump is supplied by the connector.
- Absorb volume change of heated water,
- Optional accessory (sold separately)
- Model : PQRSTA0
CTR/PNL
Control Panel (or �Remote Controller’)
CN_REMO
- Pre built-in at indoor unit
2WAY V/V_1
To control water flow for Fan Coil Unit
CN_2WAY(A)
TH8
W/TANK
B/HT
Sanitary Water Tank
Electric Heater
- Flow control for water which is leaving from
indoor unit.
- Flow direction switching between underfloor and water tank
Water to be heated by Indoor unit and B/HT
CITY WATER
of W/TANK
SHOWER
Water supplied to end-user
TH6
W/TANK water temperature sensor
3WAY V/V_1
TH7
3WAY V/V_2
Solar
Heating
PCB Connector
- 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.
E/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
W_PUMP/2
(no connector)
- 3rd party accessory and Field installation
(sold separately)
- Generating and storing sanitary hot water 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 sanitary water 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)
- 2wire 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)
General Information
Parts and Dimensions
315
315.3
850
490
ENGLISH
Indoor unit(External)
474
Description
No
1
2
(unit:mm)
Name
Door
Handle
Remarks
Control panel is shown after this door is opened.
Used to cover or uncover the front case
Installation Manual 19
General Information
Indoor unit(Internal)
305
39
66
848
474
52
109
76
81
100
474
75.1
Description
No
1
2
3
4
5
6
7
Name
Refrigerant Pipe
Refrigerant Pipe
Entering Water Pipe
Leaving Water Pipe
Control Panel
Water Pump
Safety Valve
8
Thermal switch
8'
Thermal switch
9
Control Box
10
Flow Switch
11
12
13
14
15
16
17
18
Plate Heat Exchanger
Pressure Gage
Expansion Tank
Air Vent
Electric Heater
Strainer
Shut-off valve
Carrying handle
20 Air-to-Water Heat Pump
(unit:mm)
Remarks
Г�15.88mm
Г�9.52mm
Male PT 1 inch
Male PT 1 inch
Built-in Remote Controller
Max Head 7.5 / 6.5 m
Open at water pressure 3 bar
Cut-off power input to electric heater at 90 C (manual return at 55C)
(1Г� Electric Heater is applied)
Cut-off power input to electric heater at 90 C (manual return at 55 C)
(3Г� Electric Heater is applied)
PCB and terminal blocks
Minimum operation range at 12 LPM. (9kW)
Minimum operation range at 15 LPM. (12kW, 14kW, 16kW)
Heat exchange between refrigerant and water
Indicates circulating water pressure
Absorbing Volume change of heated water
Air purging when Charging water
Please refer Page 12
Filtering and stacking particles inside circulating water
To drain or to block water when pipe connecting
To carry the product
General Information
Outdoor unit(External)
(unit:mm)
Supporter
490
*
* : AHUW146A
AHUW126A2
Description
No
1
2
3
Name
Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill
Installation Manual 21
ENGLISH
Product Heating
Capacity :
12kW,14kW,16kW
U3 Chassis
General Information
Product Heating
Capacity : 9kW
UE1 Chassis
(unit:mm)
Description
No
1
2
3
4
Name
Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill
Cover
22 Air-to-Water Heat Pump
General Information
Product Heating
Capacity : 9kW
U4 Chassis
.
Supporter
Description
No
1
2
3
Name
Liquid-side Service Valve
Gas-side Service Valve
Air discharge Grill
Installation Manual 23
ENGLISH
(unit:mm)
General Information
Control Parts
Control Box : Indoor Unit
1Г� Electric Heater
3Г� Electric Heater
8
8
1
9
6
7
7
6
5
2
4
3
11
10
9
9
2
1
2
Description
No
1
2
3
4
5
6
7
8
9
10
11
Name
Down transformer
Terminal blocks
Unit ELB
Water tank heater
ELB(optional)
Relays
Relay
(optional for water tank heater)
Main PCB
Dry Contact Supporter
Magnet Contact
Unit MCCB
Water tank heater
MCCB(optional)
24 Air-to-Water Heat Pump
Remarks
Voltage down(230V AC в†’ 24V AC)
The terminal blocks allow easy connection of field wiring
The ELB protects the unit against overload or short circuit
The ELB protects the water tank heater in sanitary water tank
against overload or short circuit
The main PCB(Printed Circuit Board) controls the functioning of the unit
Supporter to install Dry Contact (sold separately)
The MCCB protects the unit against overload
The MCCB protects the water tank heater in sanitary water tank
against overload
General Information
Control Panel
ENGLISH
14
1
1
0
2
8
3
9
4
10
5
11
6
12
7
13
2
3
4
Description
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name
Display Panel
Change Temperature Button
Silent Mode On / Off Button
Operation Mode Selection Button
Water Heating Enable / Disable Button
ESC Button
Direction Button (Up, Down, Left, Right)
Power Button
Function Setting Button
Temperature Setting Mode Button
Temperature View Mode Button
Programming Button
Set / Clear button
Pressure gage
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
General Information
1~
230V
50Hz
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 1Г�, Outdoor : 1Г�)
26 Air-to-Water Heat Pump
General Information
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Г�, Outdoor : 1Г�)
M/C
M/C
1~
230V
50Hz
M/C
MCCB
3
MCCB
3~
220V
50Hz
or
3~
380V
50Hz
ENGLISH
Installation Manual 27
General Information
28 Air-to-Water Heat Pump
MCCB
M/C
M/C
M/C
3~
380V
50Hz
1~
220V
50Hz
3
MCCB
3~
220V
50Hz
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Г� 220V, Outdoor : 3Г�)
General Information
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Г� 380-415V, Outdoor : 3Г�)
M/C
M/C
3~
380V
50Hz
M/C
MCCB
3
1~
220V
50Hz
MCCB
ENGLISH
Installation Manual 29
Installation of Outdoor Unit
3. 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
30 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 Гё70mm hole core
drill.
- Piping hole should be slightly slant to the
outdoor side to prevent raindrop into indoor
side.
Installation of Outdoor Unit
Installation at Seaside
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.
1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2. 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 31
ENGLISH
CAUTION
Installation of Indoor Unit
4. 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)
32 Air-to-Water Heat Pump
Installation of Indoor Unit
Mounting to Wall
Bottom
screws
Remove
Step 2. Attach "Installation Sheet" to the wall and mark
the location of bolts. This sheet helps to find
correct location to the bolts.
The sheet should be attached level. If not, the supporting plate and the indoor unit will not be mounted
correctly.
Step 3. Detach the Installation sheet. Screw bolts with
supporting plate at the hole marks on the wall.
When screwing bolts, use M8 ~ M11 anchor
bolts to secure hanging the indoor unit.
(Ha
ll m
ark
s)
Eight small holes around four large hole marks can be used as
alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are
more preferred.
Step 4. Hang the indoor unit at the supporting plate.
Also, catch the carrying handles at left and
right sides of the indoor unit.
While lifting the indoor unit, at least two persons
should be joined. Weight of the indoor unit is almost
55kg.
Installation Manual 33
ENGLISH
Step 1. After releasing eight screws, detach front cover from the indoor unit. While detaching the
front cover, grab the carrying handles at left and right sides of the front cover. Then pull into
upward direction. When assemble the front cover, remove detached side brackets of the
front cover and ONLY tighten two screws of bottom.
Installation of Indoor Unit
Water Volume and Pump Capacity
has different internal water pump according to the product capacity.
The water pump is three speed-adjustable (Maximum / Medium / Minimum), 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 К»Min.Кј It can lead unexpected flow
rate error CH14.
Product Heating Capacity : 9kW
8.0
7.5
7.0
6.5
aulic Head Loss(mH2O)
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
Med.
1.5
Max.
1.0
12
0.5
0.0
0
10
20
30
40
50
60
70
Water Flowrate(l/min)
80
90
100
110
80
90
100
110
Product Heating Capacity : 12kW,14kW,16kW
8.0
7.5
7.0
6.5
Hydraulic Head Loss(mH2O)
6.0
5.5
5.0
4.5
Max.
4.0
3.5
Med.
3.0
2.5
2.0
1.5
15
1.0
0.5
0.0
0
10
20
30
40
50
60
70
Water Flowrate(l/min)
Max. : high speed setting
Med. : low speed setting
Warning : Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.
: Operation cutoff range
34 Air-to-Water Heat Pump
Installation of Indoor Unit
Water Volume and Expansion Vessel Pressure
- 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
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.
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 Ојg/l
5.0 Ојg/l
10 Ојg/l
1.0 Ојg/l
0.010 Ојg/l
1.0 mg/l
10 Ојg/l
5.0 Ојg/l
50 Ојg/l
2.0 mg/l
50 Ојg/l
3.0 Ојg/l
0.10 Ојg/l
Parameter
Value
Fluoride
1.5 mg/l
Lead
10 Ојg/l
Mercury
1.0 Ојg/l
Nickel
20 Ојg/l
Nitrate
50 mg/l
Nitrite
0.50 mg/l
Pesticides
0.10 Ојg/l
Pesticides — Total
0.50 Ојg/l
Polycyclic aromatic hydrocarbons
0.10 Ојg/l
Selenium
10 Ојg/l
Tetrachloroethene and Trichloroethene
10 Ојg/l
Trihalomethanes — Total
100 Ојg/l
Vinyl chloride
0.50 Ојg/l
• 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.
36 Air-to-Water Heat Pump
Installation of Indoor Unit
Conditions if Accessories are Installed
Thermostat
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)
no
Thermostat
Connection cable
(less than 15m)
5ft
(1.5m)
no
no
Remote Air Temperature Sensor
Installation Manual 37
ENGLISH
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.
Installation of Indoor Unit
Sanitary Water Tank and Sanitary Water Tank Kit /
Solar Thermal Kit
Installing sanitary water tank requires following considerations :
• Sanitary water tank should be located at the flat place.
• Water quality should be complied with EN 98/83 EC Directives.
• As this water tank is sanitary water tank (indirect heat exchange), do not use anti water-freezing
treatment like ethylene grycol.
• It is highly recommend to wash out inside of the sanitary water tank after installation. It ensures
generating clean hot water.
• Near the sanitary water tank there should be water supply and water drain to easy access and
maintenance.
• Set the maximum value of the temperature control device of sanitary tank.
While installing sanitary water tank with sanitary water tank kit or solar thermal kit, there are some
constraints like below :
• Sanitary water tank should be located under the indoor unit or same height with the indoor unit.
• Sanitary water tank should be located under the solar thermal system.
• Distance between sanitary water 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 Out
Water In
Water Tank
38 Air-to-Water Heat Pump
Solar
Collector
(Field Supply)
Installation of Indoor Unit
Hot water supply
Shower
(End of Hot
water supply)
Recirculation
Pump
Water Out
Water In
Sanitary
Water Tank
Check Valve
External
Time Scheduler
City water
Installation Manual 39
ENGLISH
Installing recirculation pump
When
is used with sanitary water 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 the sanitary water tank
- The recirculation pump should be operated when sanitary water 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.
Installation of Indoor Unit
2Way(3way) Valve
2Way(3way) valve should be located between the indoor unit and the water tank.
• If enough space is not secured, the 2Way(3way) valve can be partially located inside the indoor unit
by cutting out the bottom of the indoor unit.
Before Cutting
After Cutting
Mice can not be appeared to prevent entering the indoor unit or attacking wires.
After cutting out the bottom of the indoor unit, remove all burrs completely. Burrs could cause personal
injury.
2Way valve should be located between the indoor unit and the water entering point to the under floor.
See below picture to identify clearly.
Fan Coil Unit
2way valve
(Field Supply)
Water Out
domain where 2way
valve installed
Water In
40 Air-to-Water Heat Pump
Under floor
Piping and Wiring for Outdoor Unit
5. Piping and Wiring for Outdoor Unit
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
Type
Non-Vapor
Injection
Vapor
Injection
Capacity
9kW
12kW
14kW
16kW
9kW
12kW
14kW
Pipe Size (mm : inch)
(Diameter : Г�)
Length A (m)
Gas
Liquid Standard
15.88(5/8") 9.52(3/8")
7.5
Elevation B (m)
Max.
50
Standard
0
Max.
30
*Additional
Refrigerant
(g/m)
30
15.88(5/8") 9.52(3/8")
7.5
50
0
30
60
15.88(5/8″) 9.52(3/8″)
7.5
50
0
30
30
15.88(5/8") 9.52(3/8")
7.5
50
0
30
50
Indoor unit
A
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
1. Standard pipe length is 7.5m and no additional charge of the refrigerant is needed to maximum
15m. If the pipe length is longer than 15m, additional charge of the refrigerant is required
according to the table.
• Example : If 16kW model is installed at a distance of 50m, 2,100g of refrigerant should be
added according to following formula : (50-15) x 60g = 2,100g
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.)
в‘ Manufacturing site (See Model Name label)
в‘Ў Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant)
в‘ў The total Charge (в‘ + в‘Ў)
Installation Manual 41
ENGLISH
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.
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
90В°
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
42 Air-to-Water Heat Pump
Inclined Surface Cracked Uneven
damaged
thickness
Piping and Wiring for Outdoor Unit
Connecting Pipe to Indoor Unit
Connecting pipe to the indoor unit is two steps. Read following directions carefully.
• 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
kgfВ·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
(Product Heating Capacity : 9kW(U4 Chassis),12kW,14kW,16kW)
Connecting pipe to the outdoor unit is five steps including PCB setting.
Step 1. Determine direction of pipes.
• The pipes can be connectable in four directions
• The directions are expressed in below figure.
Backward
Backward
Forward
Sideways
Forward
Sideways
Step 2. Determine direction of pipes : in
case of downward
Not Available
Installation Manual 43
ENGLISH
Step 1. Pre-tightening.
Piping and Wiring for Outdoor Unit
Step 3. 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
kgfВ·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 4. 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)
Do not open the side panel and not set
the DIP switch while product
operation.
44 Air-to-Water Heat Pump
4
3
2
1
ON
DIP SW2
• If pipe length is longer than 15m, the PCB
setting should be performed according to
following procedures.
1. Open the control cover of outdoor unit
2. Set to К»ONКј for 4th switch of 5 pin DIP switch
3. Close the cover and check the product
operation
5
Step 5. PCB Setting when pipe is longer
than 15m (if necessary)
Piping and Wiring for Outdoor Unit
Connecting Pipe to Outdoor Unit
(Product Heating Capacity : 9kW)
ENGLISH
• Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
• Finally, tighten the flare nut with torque wrench
until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
Outside diameter
mm
inch
Г�6.35
1/4
Г�9.52
3/8
Г�12.7
1/2
Г�15.88
5/8
Г�19.05
3/4
Torque
kgf.m
1.8~2.5
3.4~4.2
5.5~6.6
6.3~8.2
9.9~12.1
Outdoor unit
Gas side piping
Liquid side piping
Torque wrench
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Installation Manual 45
Piping and Wiring for Outdoor Unit
Electrical Wiring
Two kind of cables should be connected to the outdoor unit : One is К»Power cableКј, the other one is К»Connecting cableКј.
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 userКјs 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.
Wire Specification
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(Г�)
GN
3 Phase(Г�)
GN
/YL
/YL
20
mm
20
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.
Terminal Specification of Power Cable and related Cautions :
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.
Connecting Cable Specification : The connecting cable, being used to connect the indoor unit and
outdoor unit, should be complied with IEC 60335-1 standard (Rubber insulation, type H07RN-F
approved by HAR or SAA).
If the supply cable is damaged, it must be replaced by a special cable or
assembly available from the manufacturer or its service agent.
GN
/YL
20
mm
46 Air-to-Water Heat Pump
Piping and Wiring for Outdoor Unit
Circuit Breaker Specification
Core Component Electrical Spec.
Model
Compressor
Indoor
AHNW096A0
Outdoor
Power
Supply
RLA
(A)
AHUW096A0
Electric Heater
FLA
(A)
Capacity
(kW)
2+2
9.7
15
AHNW126A0
AHUW126A0
1~
17.0
25
AHNW146A0
AHUW146A0
220-240V
17.0
27
AHNW166A0
AHUW166A0
50Hz
17.0
27
9.7
15
Power
Supply
MOP & Circuit Breaker
Sanitary Tank Heater
RLA
(A)
Capacity
(kW)
Power
Supply
FLA
(A)
8.3
For Heat Pump
For Electric Heater For Electric Heater
(without S/Heater)
(with S/Heater)
MOP
(A)
Circuit
Breaker(A)
MOP
(A)
Circuit
Breaker(A)
MOP
(A)
Circuit
Breaker(A)
23.9
20
27
30
45
40
40.3
40
41
40
53
50
23.9
20
AHNW09604A1 AHUW096A1
1Г� 230V
12.5
3+3
AHNW09606A0
AHNW09A06A0 AHUW096AN
3Г� 220V
15.8
37
30
49
40
3Г� 400V
8.7
22
20
38
30
1Г� 230V
12.5
41
40
53
50
3Г� 220V
15.8
37
30
49
40
3Г� 400V
8.7
22
20
38
30
1Г� 230V
12.5
41
40
53
50
3Г� 220V
15.8
37
30
49
40
3Г� 400V
8.7
22
20
38
30
1Г� 230V
12.5
41
40
53
50
3Г� 220V
15.8
37
30
49
40
3Г� 400V
8.7
22
20
38
30
3+3
1Г� 230V
12.5
40.3
40
41
40
53
50
2+2
1Г� 230V
8.3
23.9
20
27
30
45
40
3+3
1Г� 230V
12.5
41
40
53
50
3Г� 220V
15.8
34.7
30
37
30
49
40
3Г� 400V
8.7
22
20
38
30
1Г� 230V
12.5
41
40
53
50
3Г� 220V
15.8
37
30
49
40
3Г� 400V
8.7
22
20
38
30
2+2+2
AHNW09806A0
3+3
AHNW16606A1
AHNW16A06A1 AHUW168A1
5.3
2+2+2
AHNW16806A1
AHNW16606A1
AHNW16A06A1 AHUW148A1
AHNW16806A1
3N~
380-415V
3+3
5.0
9.9
50Hz
2+2+2
3+3
AHNW16606A1
AHNW16A06A1 AHUW128A1
4.0
2+2+2
AHNW16806A1
AHNW16606A1 AHUW126A1
1~
AHNW16606A1 AHUW146A1гЂЂ 220-240V
AHNW16606A1 AHUW166A1гЂЂ
14.0
13.3
13
13
1Г�
3
230V
12.5
11.1
10
25
17.0
50Hz
27
27
1~
AHNW09604A1 AHUW096A2
220-240V
9.7
15
50Hz
AHNW16606A1
AHNW16A06A1 AHUW126A2
AHNW16806A1
AHNW16606A1
AHNW16A06A1 AHUW146A2
AHNW16806A1
1~
220-240V
14.5
2+2+2
50Hz
29
1~
220-240V
16.9
50Hz
3+3
2+2+2
40.1
40
Notes:
1. MCA / MOP
MCA = (1.25 x Load1) + Load2 + Load3
MOP = (2.25 x Load1) + Load2 + Load3
- Load1 : Rated running current of largest motor
(compressor or other motor)
- Load2 : sum of current for all other motors
- Load3 : any other load rated 1.0A or more
4. RLA is measured during each individual compressor test condition.
MCA : Minimum Circuit Amperes (A)
MOP : Maximum rating Over current Protective device
RLA : Rated Load Amperes (A)
FLA : Full Load Amperes (A)
S/Heater: Sanitary Water Tan Heater
2. Select wire spec. based on the MCA
3. Recommended circuit breaker is ELCB (Earth Leakage Circuit breaker)
Wiring Procedure for Power Cable and Connecting Cable
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 1.6mm2 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.
Installation Manual 47
ENGLISH
• Select a power source that is capable of supplying the current required by the AWHP.
• Use a recognized circuit breaker between the power source and the unit.
A disconnection device to adequately disconnect all supply lines must be fitted.
• Capacity of circuit breaker recommended.
• Separate main power supply and heater supply.
Piping and Wiring for Outdoor Unit
Control Terminal
(Terminal for
Connecting Cable)
Main Power
Terminal
(Terminal for
Power Cable)
Cable Clamp
(or Cord Clamp)
Cable Clamp
(or Cord Clamp)
Water
Inlet
Water
Outlet
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.
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.
48 Air-to-Water Heat Pump
Piping and Wiring for Outdoor Unit
Finalizing
Pipe Forming
Pipe
Drain hose
(not used)
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Do pipe
Sealforming
a small by wrapping the connecting
cableopening
and refrigerant
around pipe (between the indoor
the pipings
unit and
outdoorwith
unit) with thermal insulation
gum type sealer.
material and secure it with two kinds of vinyl tape.
1. Tape the refrigerant pipe,Plastic
power cable and
band
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 sealer.
sealant.
Taping
Drain hose
(not used)
Seal a small opening
around the pipings
with gum type sealant.
sealer.
Trap
Plastic
band
Connecting
cable
Refrigerat
Pipes
Power Cable
Trap
• Trap is required to prevent water from entering
into electrical parts.
Installation Manual 49
ENGLISH
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.
Piping and Wiring for Outdoor Unit
Leakage test and Evacuation
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.
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.
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.
50 Air-to-Water Heat Pump
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
Manifold valve
Lo
Hi
Pressure
gauge
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Piping and Wiring for Outdoor Unit
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
0.5 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.
Manifold valve
Lo
Pressure
gauge
Hi
Open
Open
Vacuum pump
Installation Manual 51
ENGLISH
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.
Piping and Wiring for Indoor Unit
6. 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.
52 Air-to-Water Heat Pump
Piping and Wiring for Indoor Unit
Water condensation on the floor
While cooling operation, it is very important to keep leaving water temperature higher than 16В°C.
Otherwise, dew condensation can be occurred on the floor.
If floor is in humid environment, do not set leaving water temperature below 18 В°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.
Installation Manual 53
ENGLISH
Installing shut-off valve
• While assembling two shut-off valves, that are found inside ʻAWHP Installation Kit
(AET69364401)Кј, 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.
Piping and Wiring for Indoor Unit
Water Charging
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.
No water-leakage permitted at the drain and fill
valve. Leakage-proof treatment which is described
in previous section should be applied.
Water In
Water Out
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
54 Air-to-Water Heat Pump
Piping and Wiring for Indoor Unit
Electrical Wiring
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.
• 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, miceʼs wire attacking
or frogКјs 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
C
Hole A, B : for AC line (wire which is connected to the terminal block of the control box)
Hole C : for DC line (wire which is connected to the PCB of the control box)
Installation Manual 55
ENGLISH
General Consideration
Piping and Wiring for Indoor Unit
Terminal Block Information (1Г� Electric Heater)
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 sanitary
water tank heating
energizing water
pump for solar
thermal system
WATER
PUMP
(B)
4
5
L
N
BR
BL
3WAY VALVE
(B)
1
L
BR
2
L1
WH
3
N
BL
water flow switching between using
solar thermal heating and skipping
solar thermal heating
WATER
TANK
HEATER
6
7
L
N
BR
BL
3WAY VALVE
(A)
8
L
BR
9
L1
WH
10
N
BL
turn on or off sanitary
water tank heater
Terminal Block 2
opening or closing
water flow for FCU
cooling
11
12
1(L) (2(N)
(BR) BL
THERMOSTAT
(Default : 230V AC)
2WAY VALVE
(A)
OUTDOOR UNIT
13
3
BK
14
L1
BR
15
L2
WH
Power supply for Indoor
unit and communication
16
N
BL
17
L
BR
18
N
BL
19
L1
WH
20
L2
BK
Connection for thermostat
(230V AC or 24V AC)
Supporting type : Heating only or
Heating/Cooling
Terminal
Block 1
Terminal
Block 2
Terminal Block 3
connecting external electric
power supply for sanitary
water tank electric heater
EXTERNAL POWER
(INTERNAL E/HEATER)
1
2
L
N
BR
BL
EXTERNAL POWER
(W/TNK E/HEATER)
3
L
BR
connecting external electric
power supply for internal
electric heater
56 Air-to-Water Heat Pump
4
N
BL
Terminal
Block 3
Piping and Wiring for Indoor Unit
Terminal Block Information (3Г� Electric Heater)
Terminal Block 1
1
L
BR
2
L1
WH
WATER
PUMP
(B)
4
5
L
N
BR
BL
3
N
BL
water flow switching between using
solar thermal heating and skipping
solar thermal heating
Terminal Block 2
WATER
TANK
HEATER
6
7
L
N
BR
BL
3WAY VALVE
(A)
8
L
BR
9
L1
WH
10
N
BL
turn on or off sanitary
water tank heater
Terminal
Block 1
opening or closing
water flow for FCU
cooling
13
3
BK
THERMOSTAT
(Default : 230V AC)
2WAY VALVE
(A)
OUTDOOR UNIT
11
12
1(L) (2(N)
(BR) BL
water flow switching between
under floor heating and sanitary
water tank heating
energizing water
pump for solar
thermal system
3WAY VALVE
(B)
14
L1
BR
Power supply for Indoor
unit and communication
ENGLISH
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
15
L2
WH
16
N
BL
17
L
BR
18
N
BL
19
L1
WH
20
L2
BK
Terminal
Block 2
Connection for thermostat
(230V AC or 24V AC)
Supporting type : Heating only or
Heating/Cooling
Terminal Block 3
connecting external electric
power supply for sanitary
water tank electric heater
EXTERNAL POWER
(W/TNK E/HEATER)
1
L
BR
2
N
BL
EXTERNAL POWER
(INTERNAL E/HEATER)
3
4
5
R
S
T
BR
BK
GY
Terminal
Block 3
connecting external electric
power supply for internal
electric heater
Installation Manual 57
Piping and Wiring for Indoor Unit
L
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
1(L) 2(N) 3
Terminal block at outdoor unit
1
2
3
Terminal block at outdoor unit
1
2
3
1Г� Electric Heater
3Г� Electric Heater
Electric Heater Wiring
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(Г�)
GN
3 Phase(Г�)
GN
/YL
/YL
20
mm
20
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 N
L
N
R
T
S
1Г� Electric Heater
58 Air-to-Water Heat Pump
L
N
3Г� Electric Heater
Accessories Installation
7. Accessories Installation
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.
Before Installation
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
supports following thermostats.
Type
Mechanical
(1)
Power
Operating Mode
230 V AC
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
24 V AC
Electrical
(2)
230 V AC
24 V AC
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 К»Heating ON or Heating OFFКј signal according to userКјs heating target temperature.
(4) : Thermostat generates both К»Heating ON or Heating OFFКј and К»Cooling ON or Cooling OFFКј signal according
to userКјs heating and cooling target temperature.
Installation Manual 59
ENGLISH
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.
Accessories Installation
Choosing Heating / Cooling Thermostat
• Heating / Cooling Thermostat must have ʻMode Selectionʼ 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 product 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.
How to Wire Thermostat
Follow below procedures Step 1 ~ Step 6.
Step 1. Uncover front cover of the indoor unit and open the control box.
Step 2. Identify the power specification of the thermostat. If it is 230V AC, go to Step 4. Otherwise, if
it is 24V AC, go to step 3
Step 3. Find thermostat connecting cable A and C. Disconnect cable A and C, then connect cable B and C.
Second:
Connect B
and C
B
C
A
Secont :
Disconnect B
and C
C
A
B
First:
Disconnect A
and C
1Г� Electric Heater
First :
Disconnect A
and C
3Г� Electric Heater
Step 4. If it is Heating Only Thermostat, go to step 5. Otherwise, if it is Heating / Cooling Thermostat,
go to step 6.
Step 5. Find terminal block and connect wire as below. After connecting, go to step 6.
THERMOSTAT
(Default : 230V AC)
17
L
BR
(L)
18
19
N
L1
BL
WH
(N)
20
L2
BK
(H)
Thermostat
Heating Only Thermostat
Mechanical type Thermostat
Do not connect wire (N) as mechanical type thermostat does not
require electric power supply.
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, PCB of the indoor unit can be seriously damaged.
(L) : Live signal from PCB to Thermostat
(N) : Neutral signal from PCB to Thermostat
(H) : Heating signal from Thermostat to PCB
60 Air-to-Water Heat Pump
Accessories Installation
Step 6. Find terminal block and connect wire as below.
17
L
BR
(L)
18
N
BL
19
L1
WH
(N)
20
L2
BK
(C)
Mechanical type Thermostat
Do not connect wire (N) as mechanical type thermostat does not
require electric power supply.
(H)
Thermostat
Heating / Cooling Thermostat
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, PCB of the indoor unit 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
Final Check
• DIP switch setting :
Set DIP switch No. 8 to 'ON'. Otherwise, the product can
not recognize the thermostat.
• Control Panel :
- 'Thermostat' icon is displayed on the control panel.
- Button input is prohibited.
Thermostat Icon
Thermostat Operation with Control Panel
Following features are permitted when thermostat is installed :
•
SET TEMP button
•
VIEW TEMP button
•
Temperature adjust button (*)
•
Sanitary water heating Enable / Disable
•
Silent operation On / Off
(*) : Adjusted temperature is only used to control electric heater on / off condition.
The product does not turn on / off according to the setting temperature at the control panel. It
turns on / off according to the thermostat signal.
Following features are NOT permitted when thermostat is installed :
•
Operating mode (cooling/ heating/ weather-dependent) selection
•
Time scheduling
•
Operation On / Off
Installation Manual 61
ENGLISH
THERMOSTAT
(Default : 230V AC)
Accessories Installation
Sanitary Water Tank and Sanitary Water Tank Kit/Solar Thermal Kit
To establish sanitary water circuit, 3way valve and sanitary water tank kit is required. If solar thermal
system is pre-installed at the installation field, solar thermal kit is required to interface solar thermal
system – to – sanitary water 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 sanitary water tank.
62 Air-to-Water Heat Pump
Accessories Installation
How to Install Sanitary Water Tank
PHS02060310(LGRTV200E) / PHS03060310(LGRTV300E)
PHS02060320(LGRTV200VE) / PHS03060320(LGRTV300VE)
(unit : mm)
Installation Manual 63
ENGLISH
For more detail information about installing sanitary water tank, please refer installation manual
provided with sanitary water tank.
Accessories Installation
How to Install Sanitary Water Tank Kit
B
Follow below procedures Step 1 ~ Step 6.
Step 1. Find a relay contactor and ELB(MCCB) in the kit. Bolt
them into control box. (symbol в’¶ at picture)
Step 2. Connect К»CN_B/HEAT(A)Кј (White Connector) of the
indoor unit PCB with relay contact using included cable
(symbol в’· at the picture). Connect relay contactor port
no. 0 and 1.
Step 3. Connect relay contactor port no. 2 and 6 with
ELB(MCCB) port no. 2 and 4. (symbol в’ё at the
picture).
A
C D
A
Check Polarity
• Connect relay contact port no. 2 to ELB(MCCB) port no. 2
• Connect relay contact port no. 6 to ELB(MCCB) port no. 4
E
Step 4. Connect relay contactor port no. 4 and 8 with terminal
block 1 port 6 and 7. (symbol в’№ at the picture).
Check Polarity
• Connect relay contact port no. 4 to terminal block 1 port 6
• Connect relay contact port no. 8 to terminal block 1 port 7
1Г� Electric Heater
Step 5. 1Г� Electric Heater
’ Connect ELB(MCCB) port no. 1 and 3 with terminal
block 3 port 3 and 4. (symbol в’є at the picture).
3Г� Electric Heater
’ Connect ELB(MCCB) port no. 1 and 3 with terminal
block 3 port 1 and 2. (symbol в’є at the picture).
Check Polarity
1Г� Electric Heater
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 3
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 4
3Г� Electric Heater
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 1
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 2
1
2
0
C
A
E
1
8
3Г� Electric Heater
2
Note:
D
3
4
6
A
Relay contactor
port no. assignment
4
ELB(MCCB) port no.
assignment
Some models are using MCCB instead of ELB
64 Air-to-Water Heat Pump
Accessories Installation
Sensor mounting
Insert sensor into sensor socket and bolt it tightly.
A
B
1Г� Electric Heater
C
D
Sanitary Water
Tank
A
B
3Г� Electric Heater
C
D
Sanitary Water
Tank
Installation Manual 65
ENGLISH
Step 6. Find sanitary water tank sensor. Connect it to К»CN_TH4Кј (Red Connector) of the indoor unit
PCB (symbol в’¶ at the picture). The sensor wire should be passed through holes for
sensor (symbol в’· and в’ё at the picture). The sensor should be mounted correctly to the
sensor hole of sanitary water tank.
Accessories Installation
How to Wire Sanitary Water Tank Heater
Step 1. Uncover heater cover of the sanitary water 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
Wire specification
• Cross-sectional area of the wire should be 5mm2.
Adjusting thermostat temperature
• To guarantee proper operation, it is recommended to set temperature of thermostat to maximum
temperature (symbol at the picture).
1Г� Electric Heater
WATER
TANK
HEATER
7
6
N
L
BR
BL
(L)
(N)
A
66 Air-to-Water Heat Pump
3Г� Electric Heater
WATER
TANK
HEATER
7
6
N
L
BR
BL
(L)
(N)
A
Accessories Installation
How to Install Solar Thermal Kit
Step 1. Check the diameter of pre-installed pipes. (symbol в’¶ and в’·)
Step 3. After Step 2., connect the pipe and solar thermal kit.
Step 4. Connect solar thermal sensor to К»CN_TH4Кј(Red connector) of the indoor unit PCB.
If the sanitary 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 Out
Solar
Collector
(Field Supply)
Water In
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)
Installation Manual 67
ENGLISH
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 pipeКјs diameter.
Accessories Installation
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.
3WAY VALVE
(A)
8
9
10
L
L1
N
BR
WH
BL
(W)
(U)
(N)
• 3way valve should select water tank loop when electric power is
supplied to wire (W) and wire (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 sanitary tank water inlet when sanitary
tank heating is selected.
- To verify the flow direction, check temperature at the water outlet of the indoor unit and water inlet
of sanitary water 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.
68 Air-to-Water Heat Pump
Accessories Installation
2Way Valve
General Information
supports following 2way valve.
Type
Power
Operating Mode
Supported
NO 2-wire
(1)
230V AC
Closing water flow
Yes
Opening water flow
Yes
NC 2-wire
(2)
230V AC
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.
2WAY VALVE
(A)
14
L1
BR
15
L2
WH
(NO)
(NC)
2way valve
16
N
BL
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.
(N)
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 6В°C in cooling mode.
Installation Manual 69
ENGLISH
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.
System Set-Up
8. 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
Turn off electric power supply before setting DIP switch
• Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock.
General Information
OFF
ON
1
2
3
4
5
6
7
8
OFF is selected
ON is selected
70 Air-to-Water Heat Pump
System Set-Up
DIP Switch Information
Description
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
+ Sanitary water tank
is installed
Default
1
2
3
Indoor unit + Outdoor unit
+ Sanitary water tank
+ Solar thermal system
is installed
4
High temperature cycle
4
Low temperature cycle
5
External water pump is
NOT installed
4
External water pump
installation information
5
External water pump is
installed
6
Step 2 capacity is used
5
7
6
Selecting electric
heater capacity
7
6
7
Thermostat installation
information
Step 1 capacity is used
6
7
Electric heater is not used
8
Thermostat is NOT installed
8
Thermostat is installed
8
Installation Manual 71
ENGLISH
Role when central
controller is equipped
Setting
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 userКјs 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
Sanitary Water
Temperature
High temperature cycle
OFF
50В°C
24В°C
70В°C
Low temperature cycle
ON
30В°C
19В°C
50В°C
72 Air-to-Water Heat Pump
System Set-Up
• Following features are permitted in emergency operation :
Operation On/Off
-
VIEW TEMP button(*)
-
ENGLISH
-
Temperature adjust button (*)
Sanitary water heating Enable / Disable
(*) : Temperature measured by failed sensor is displayed as К»- -Кј.
(*) : Adjusted temperature is only used to control electric heater on / off condition.
The product does not turn on / off according to the setting temperature at the control panel.
It turns on / off according to the thermostat signal.
• Following features are NOT permitted in emergency operation :
-
Operating mode (cooling/ heating/ weather-dependent) selection
-
Time scheduling
-
SET TEMP button
-
Silent operation On / Off
• 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 sanitary water heating can be impossible in emergency operation mode.
When sanitary water is not warming up while emergency operation, please check if sanitary
water sensor and related wiring are all Ok.
• 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 73
System Set-Up
Control Panel Setting
How to enter installer setting mode
Installer setting mode is to set the detail function of the control panel.
If the installer setting mode is not set correctly, it could cause problems to the product, user injury
or property damage. This must be set by an certificated installer, and any installation or change
that is carried out by a non-certificated person should be responsible for the results. In this case,
free service cannot be provided.
Function Setting button for 3
1 Press
seconds to enter
the installer setting mode.
Function Code
Value
(When you enter the installer setting
mode initially, Function code is displayed
on the bottom of the LCD screen.)
Repeat pressing button, and the function
code will be changed from 01 to 2A.
Please refer the code table on the next
page.
74 Air-to-Water Heat Pump
System Set-Up
Summary
Example of Fuction Code Display
Code
1
2
Item
Function
Description
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
Note
Value #1
4
Value #1
Default
Range
Note
Value #2 Default
Range
Function
Description
Note
Value #2
Value #2
Detail
Function
Description
Note
Value #1 Default
Range
Note
Value #2 Default
Range
3
Value #1
Default
Range
Note
Default
Range
ENGLISH
Function Code
Test Run
Instant cooling operation for charging additional refrigerant
01
Disable 3 Min. Delay
Factory use only
01
Remote Air Sensor Connection
Connection information about remote air sensor
01:Remote air sensor is NOT connected and NOT used
02:Remote air sensor is connected and used
01
01~02
Celsius/Fahrenheit Switching
Display temperature in Celsius or Fahrenheit
01:Celsius
02:Fahrenheit
01
01~02
-
Remark
-
-
-
-
Installation Manual 75
System Set-Up
Code
Item
Function
Description
Note
5
Value #1
Default
Range
Note
Value #2 Default
Range
Function
Description
Note
6
Value #1
Default
Range
Note
Value #2 Default
Range
Function
Description
7
11
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
12
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Detail
Setting Temperature Selection
Selection for setting temperature as air temperature or
leaving water temperature
01:Air temperature
02:Leaving water temperature
Air temperature as setting temperature is ONLY available
when remote air sensor
Connection is enabled and Function Code 03 is set as 02.
02
01~02
Auto Dry Contact
Setting dry contact auto start option.
If thermostat is used, value should be changed from "2" to "1"
01:Auto Start OFF
02:Auto Start ON
Remark
-
02
01~02
-
Address Setting
Assigning address when central controller is installed
If thermostat is used, value should be changed from "2" to "1"
00
00~FF
Setting Air Temperature in Cooling Mode
Adjusting range of 'Setting Air Temperature' in cooling mode
Upper Limit of setting range
30В°C
24~30В°C
Lower Limit of setting range
18В°C
18~22В°C
Setting Leaving Water Temperature in Cooling Mode
Adjusting range of 'Setting Leaving Water Temperature' in
cooling mode
Upper Limit of setting range
24В°C
20~25В°C
Lower Limit of setting range(FCU is equipped)
06В°C
06~18В°C
76 Air-to-Water Heat Pump
-
'Setting Air
Temperature' is
used when user
wants to set target
temperature by
room air
temperature.
'Setting Leaving
Water
Temperature' is
used when user
wants to set target
temperature by
leaving(from the
indoor unit) water
temperature.
System Set-Up
Code
13
Note
Value #2 Default
Range
Function
Description
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
14
Value #1
Value #2
Note
Default
Range
Note
Default
Range
Function
Description
15
Note
Default
Range
Note
Value #2 Default
Range
Function
DIP switch
setting
Value #1
Description
Note
21
Value #1
Default
Range
Note
Value #2
Default
Range
Remark
Lower Limit of setting range(FCU is NOT equipped)
16C
16~18C
Setting Air Temperature in Heating Mode
Adjusting range of 'Setting Air Temperature' in heating mode
Upper Limit of setting range
30C
24~30C
Lower Limit of setting range
16C
16~22C
Setting Leaving Water Temperature in Heating Mode
Adjusting range of 'Setting Leaving Water Temperature' in
heating mode
Upper Limit of setting range
55C
35~55C
Lower Limit of setting range
15C ( * 20C)
15~34C ( * 20~34Г‡)
Setting Sanitary Tank Leaving Water Temperature for
Sanitary Water Heating
Adjusting range of 'Setting Sanitary Tank Leaving Water
Temperature' in sanitary water heating mode
Upper Limit of setting range
50C
50~80C
Lower Limit of setting range
40C
30~40C
Setting Electric Heater On/Off temperature
No.6 = Off
No.6 = Off
No.7 = On
No.7 = Off
Setting for Using Full capacity
Setting for Using Half capacity
of electric heater
of electric heater
Outdoor air temperature where
half capacity of electric heater
Base outdoor air temperature
starts operation.
0C
-15~18C
Temperature gap (it means 'how
Not used
much colder than base outdoor
air temperature?')
0C
0~33C
'Setting Air
Temperature' is
used when user
wants to set target
temperature by
room air
temperature.
'Setting Leaving
Water
Temperature' is
used when user
wants to set target
temperature by
leaving(from the
indoor unit) water
temperature.
* : Electric heater
is not used.
'Setting Sanitary
Tank Leaving
Water
Temperature' is
used when user
wants to set water
temperature of
Sanitary Tank.
DIP Switch
setting is
described in
Chapter 8 of
Installation
Manual.
Installation Manual 77
ENGLISH
12
Detail
Item
System Set-Up
Code
Detail
Item
Function
Description
Note
22
Value #1
Default
Range
Note
Value #2
Default
Range
Function
Description
23
Value #1
Value #2
Note
Default
Range
Note
Default
Range
Function
Description
24
Note
Default
Range
Note
Value #2 Default
Range
Function
Value #1
Description
25
Value #1
Value #2
26
Note
Default
Range
Note
Default
Range
Function
Description
Note
Value #1 Default
Range
Setting Cut-off Temperature in Cooling Mode
(FCU setting included)
Determine leaving water temperature when the product is turned off.
This function is used for preventing condensation
on the floor in cooling mode.
Cut-off temperature. Value #1 is valid when Value #2 is
'01 (that means, FCU is installed)'."
16В°C
16~25В°C
Determines if FCU is installed or not. '01' means 'FCU is
NOT installed', and '00' means 'FCU is installed.'
00
00(Equipped)~01(NOT Equipped)
Setting outdoor temperature range for Weather-dependent
operation
Setting outdoor Max/Min temperature for weather-dependent
operation
Upper Limit of setting range
-10В°C
-20~05В°C
Lower Limit of setting range
15В°C
10~20В°C
Setting indoor air temperature range for Weather-dependent
operation
Setting indoor Max/Min temperature for weather-dependent
operation
Upper Limit of setting range
21В°C
20~30В°C
Lower Limit of setting range
16В°C
16~19В°C
Setting leaving water temperature range for Weather-dependent operation
Setting leaving water Max/Min temperature for
weather-dependent operation
Upper Limit of setting range
55В°C
35~55В°C
Lower Limit of setting range
15В°C ( * 20В°C)
15~34В°C ( * 20~34В°C)
Setting Disinfection Operation
Setting start/maintain time for disinfection
Enable/Disable of Disinfection Operation(00:Disable , 01:Enable)
00
00~01
78 Air-to-Water Heat Pump
Remark
-
-
-
-
* : Electric heater is
not used.
Sanitary water
heating should be
enable
• If sanitary water
heating is disable,
System Set-Up
Code
Detail
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
Starting Date(Sunday:1,Monday:2, В·В·В·В· ,Saturday:7)
06
01~07
Starting Time in 24 hours(00~23)
23
00~23
Setting Disinfection Operation
Setting disinfection temperature
Maximum heating temperature
70В°C
40~80В°C
Maximum heating duration in minute
10min
05~60min
Setting control parameter for Sanitary water heating operation
See below notes for each values
Temperature gap from Value #2 of Function Code 28
05В°C
01~20В°C
Maximum temperature generated by AWHP compressor cycle
50В°C
40~50В°C
Setting control parameter for Sanitary water heating operation
See below notes for each values
Temperature gap from target sanitary water temperature.
(This value is required to frequent On and Off of water tank heater )
03В°C
02~04В°C
Determining heating demand priority between sanitary water tank
heating and under floor heating
00
00~01
Miscellaneous setting
Determine electric heater and water heater on and off
00 : Operate both Electric Heater and Sanitary Tank Heater
01 : Operate ONLY Sanitary Tank Heater
00
00~01
Not used
-
Value #1
Value #2
28
Note
Default
Range
Note
Default
Range
Function
Description
Note
Value #1 Default
Range
Note
Value #2 Default
Range
Function
Description
Note
Value #1
29
Default
Range
Note
Value #2
Default
Range
Function
Description
Note
2A
Value #1
Value #2
Default
Range
Note
Default
Range
Remark
the disinfection
mode will not be
operated although
Value #1 of Code
26 is set as '01'.
• To use
disinfection mode,
sanitary water
heating should be
enable.
Only available
when Sanitary
Water Tank is
installed.
-
Installation Manual 79
ENGLISH
27
Item
System Set-Up
Code
Item
Function
Note
Detail
Sanitary water heating timers
Determine following time duration : operation time of sanitary tank
heating, stop time of sanitary tank heating, and delay time of
sanitary tank heater operating.
This time duration defines how long time sanitary tank heating can
be continued.
30min
5 ~ 95 min (step: 5 min)
This time duration defines how long time sanitary tank heating can
be stopped. It is also regarded as time gap between sanitary tank
heating cycle.
180 min
0 ~ 600 min (step: 30 min)
This time duration defines how long time sanitary tank heater
will not be turned on in sanitary water heating operation.
Default
Range
20 min
20 ~ 95 min (step: 5 min)
Description
Note
Value #1
2B
Default
Range
Note
Value #2
Default
Range
Value #3
Remark
-
Some contents may not be displayed depending on DIP switch setting in the indoor unit PCB
80 Air-to-Water Heat Pump
System Set-Up
Common Setting
Note: • If you press any kind of button during this mode, Test Run mode will be finished.
• After running 18 minutes under test run mode, system will automatically turn OFF.
• Function Code 02 : Disable 3 minute Delay
Factory use only.
• Function Code 03 : Remote Air Sensor Connection
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.
• Function Code 04 : Celsius/Fahrenheit Switching
Temperature is displayed in Celsius or Fahrenheit.
• Function Code 05 : Setting Temperature 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 Function Code 03 is set as 02.
• Function Code 06 : Auto Dry Contact
This function allows the Dry contact-indoor unit operate under Auto Run mode or Manual mode
with remote control panel.
If thermostat is used, value should be changed from "2" to "1"
• Function Code 07 : Address Setting
When Central Controller is installed, address assigning is set by this function.
Installation Manual 81
ENGLISH
• Function Code 01 : Test Run
Test run should be performed when additional refrigerant charging is required. To charge the
refrigerant, the product must run in Cooling mode. Test run instantly makes the product working in
Cooling mode for 18 minutes.
System Set-Up
Temperature Range Setting
• Function Code 11 : Setting Air Temperature in Cooling Mode
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, Function Code 03 should be set properly.
• Function Code 12 : Setting Leaving Water Temperature in Cooling Mode
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.
• Function Code 13 : Setting Air Temperature in Heating Mode
Determine heating 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, Function Code 03 should be set properly.
• Function Code 14 : Setting Leaving Water Temperature in Heating Mode
Determine heating setting temperature range when leaving water temperature is selected as setting
temperature.
• Function Code 15 : Setting Sanitary Tank Leaving Water Temperature
Determine heating setting temperature range of water tank leaving water.
Only available when sanitary water tank feature is installed
• Sanitary water tank and sanitary water tank kit should be installed.
• DIP switch No. 2 and 3 should be set properly.
82 Air-to-Water Heat Pump
System Set-Up
Temperature Control Parameter Setting
Using Full capacity of electric heater : when DIP Switch No. 6 and 7 is set as К»OFF-OFFКј :
- Value #1 : base outdoor air temperature.
- Value #2 : temperature gap (it means К»how much colder than base outdoor air temperature?Кј)
- Example : If Value #1 is set as К»-1Кј and Value #2 is set as К»3Кј and DIP Switch No 6. and 7 is set as
К»OFF-OFFКј, then full capacity of electric heater will start operation when outdoor air temperature is
below -4°C (-4 = Value #1 – Value #2) and current leaving water temperature or room air
temperature is far much belower than target leaving water temperature or target room air
temperature.
• Function Code 22 : Setting Cut-off Temperature in Cooling Mode (FCU setting included)
Determine leaving water temperature when the product is turned off. This function is used fr
preventing condensation on the floor in cooling mode.
- Value #1 : cut-off temperature. Value #1 is valid when Value #2 is Кј01 (that means, FCU is
installed)Кј.
- Value #2 : determines if FCU is installed or not. Кј01Кј means К»FCU is NOT installedКј, and Кј00Кј means
К»FCU is installed.Кј
- Example : If Value #1 is set as К»10Кј and Value #2 is Кј01Кј and actually FCU is NOT installed in the
water loop, the product stop operation in cooling mode when the leaving water temperature is
below 10 В°C.
- Example : If Value #1 is set as К»10Кј and Value #2 is Кј00Кј and actually FCU is installed in the water
loop, the Value #1 is not used and the product do NOT stop operation in cooling mode when the
leaving water temperature is below 10 В°C.
FCU Installation
• If FCU is used, related 2way valve should be installed and connected to the indoor unit PCB.
• If Value #2 is set as ʼ00ʼ but FCU or 2way valve is NOT installed, the product can abnormal
operation.
Function Code 23 and 24 : Setting Weather-dependent operation Mode
Installation Manual 83
ENGLISH
• Function Code 21 : Setting Electric Heater On/Off temperature
Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as К»OFF-ONКј :
- Value #1 : outdoor air temperature where half capacity of electric heater starts operation.
- Value #2 : not used.
- Example : If Value #1 is set as К»-1Кј and DIP Switch No 6. and 7 is set as К»OFF-ONКј, then half
capacity of electric heater will start operation when outdoor air temperature is below -1В°C and
current leaving water temperature or room air temperature is much belower than target leaving
water temperature or target room air temperature.
System Set-Up
• Function Code 23, 24, and 25 : Setting Weather-dependent operation
Weather-dependent operation is that the product automatically adjusts target temperature (leaving
water or room air) according to the outdoor air temperature.
- Value #1 and Value #2 of Function Code 23 : range of outdoor air temperature
- Value #1 and Value #2 of Function Code 24 : range of auto-adjustable target room air temperature
- Value #1 and Value #2 of Function Code 25 : range of auto-adjustable target leaving water
temperature
Note : Weather-dependent operation is applied for heating mode only.
Auto-Adjustable
Target Temperature
Temperature profile
of Weather-dependent
operation
Value #1 of
Function Code
24 or 25
Value #2 of
Function Code
24 or 25
Value #1 of
Function Code 23
84 Air-to-Water Heat Pump
Value #2 of
Function Code 23
Outdoor
air temperature
System Set-Up
Temperature profile
of Disinfection operation
Water temperature
(Inside sanitary water tank)
Value #1 of
Function Code
27
Value #2 of
Function Code 27
Value #2 of
Function Code 26
Time
Vales of Function Code 26
• If Value #1 of Function Code 26 is set as ʼ00ʼ, that is ʻdisable disinfection modeʼ, Value #2 and
Value #3 is not used.
• When Value #1 is set as ʼ01ʼ, that is ʻenable disinfection modeʼ,ʼ Value #2 is displayed at the
position of Value #1 and Value #3 is displayed at the position of Value #2. It is due to limited
width of the control panel display.
Sanitary water heating should be enable
• If sanitary water heating is disable, the disinfection mode
will not be operated although Value #1 of Code 26 is set
as Кј01Кј.
• To use disinfection mode, sanitary water heating should
be enable.(by button input or scheduler programming)
Press repeatedly
tank heating
Button to enable sanitary
<Sanitary Water Heating Disable>
<Sanitary Water Heating enable>
Installation Manual 85
ENGLISH
• Function Code 26 and 27 : Setting Disinfection operation
Disinfection operation is special sanitary tank operation mode to kill and to prevent growth of
viruses inside the tank.
- Value #1 of Function Code 26 : Selecting enable or disable of disinfection operation. Кј00Кј for
disable, and Кј01Кј for enable.
- Value #2 of Function Code 26 : Determining the date when the disinfection mode is running. Кј01Кј
for Sunday, ʼ02ʼ for Monday, … , and ʼ06ʼ for Saturday.
- Value #3 of Function Code 26 : Determining the time when the disinfection mode is running. Кј00Кј
for 0:00am, ʼ01ʼ for 01:00am, … , ʼ22ʼ for 10:00pm, and ʼ23ʼ for 11:00pm.
- Sunday, ʼ02ʼ for Monday, … , and ʼ06ʼ for Saturday.
- Value #1 of Function Code 27 : Target temperature of disinfection mode.
- Value #2 of Function Code 27 : Duration of disinfection mode.
System Set-Up
• Function Code 28 and 29 : Setting control parameter for Sanitary water heating operation
Descriptions for each parameters are as following.
- Value #1 of Function Code 28 : temperature gap from Value #2 of Function Code 28.
- Value #2 of Function Code 28 : maximum temperature generated by AWHP compressor cycle.
- Example : If Value #1 is set as К»5Кј and Value #2 is set as Кј48Кј, then Session A (see the graph) will
be started when the water tank temperature is below 45В°C. If temperature is above 48 В°C, then
Session B will be started.
- Value #1 of Function Code 29 : temperature gap from target sanitary water temperature. This
value is required to frequent On and Off of water tank heater.
- Value #2 of Function Code 29 : Determining heating demand priority between sanitary water tank
heating and under floor heating.
- Example : If userКјs target temperature is set as Кј70Кј and Value #1 is set as К»3Кј, then the water tank
heater will be turned off when the water temperature is above 73 В°C. The water tank heater will be
turned on when the water temperature is below 70 В°C.
- Example : If Value #2 is set as К»0Кј, that means heating priority is on sanitary water heating,
sanitary water is heated by AWHP compressor cycle and water heater. In this case the under floor
can not be heated while sanitary water heating. On the other hand, if the Value #2 is set as К»1Кј,
that means heating priority is on under floor heating, sanitary tank is ONLY heated by water
heater. In this case the under floor heating is not stopped while sanitary water is heated.
Water temperature
(Inside sanitary water tank)
Water heater off
temperature
Value #1 of
Function Code 29
Target sanitary water
temperature (set by user)
Value #2 of
Function Code 28
Value #1 of
Function Code 28
Starting temperature
of sanitary water 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
Sanitary water heating does not operate when it is disabled.
Enabling / Disabling of sanitary water heating is determined by pushing
button.
When
icon is displayed on the control panel, sanitary water heating is enabled.
(by button input or scheduler programming)
86 Air-to-Water Heat Pump
System Set-Up
• Function Code 2B : Sanitary water heating timers
Determine following time duration : operation time of sanitary tank heating, stop time of sanitary
tank heating, and delay time of sanitary tank heater operating.
- Value #1 of Function Code 2B : This time duration defines how long time sanitary tank heating can
be continued.
- Value #2 of Function Code 2B : This time duration defines how long time sanitary tank heating can
be stopped. It is also regarded as time gap between sanitary tank heating cycle.
- Value #3 of Function Code 2B : This time duration defines how long time sanitary tank heater will
not be turned on in sanitary water heating operation.
- Example of timing chart :
1
Sanitary tank
heating is enabled 0
1
Sanitary tank heater
is enabled 0
Sanitary tank 1
heating is required
0
2B.02
2B.01
2B.02
2B.01
2B.02
Sanitary tank 1
heating operation 0
1
Sanitary tank
heater operation 0
вќ€ 1=active / 0=not active
2B.03
2B.03
Time
Installation Manual 87
ENGLISH
• Function Code 2A : Miscellaneous setting
- Value #1 of Function Code 2A : determine electric heater and sanitary tank heater on and off.
- Value #2 of Function Code 2A : not used.
- Example : If Value #1 is set as К»0Кј, then electric heater and sanitary tank heater are on and off
according to control logic. If Value #1 is set as К»1Кј, then electric heater is never turned on and only
water heater is on and off according to control logic.
Check Points, Maintenance and Troubleshooting
9. 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
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.
Parts inspection
• There should be no apparently damaged parts inside the indoor unit.
11
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.
88 Air-to-Water Heat Pump
Check Points, Maintenance and Troubleshooting
Maintenance
Turn off the power before proceeding maintenance
No
Category
1
2
Water
3
4
Electricity
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.
Installation Manual 89
ENGLISH
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.
Check Points, Maintenance and Troubleshooting
Troubleshooting
If
operates not properly or it does not start operation, please check following list.
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 Function
is not proper.
code 03 and 05.
1
2
3
4
5
Heating or cooling is not
satisfactory.
• Charged water is not
enough.
• Check pressure gage and charge more water until pressure gage is
indicating 2.0~2.5 bar.
• Water flow rate is low.
• Check if strainer gathers too much particles. If so, strainer should be
cleaned.
• Check if internal water pump speed is NOT set as ʻHighʼ. It should
be set as К»High.Кј
• Check if pressure gage indicates above 0.3 bar.
• Check if water pipe is getting closed due to stacked particles or lime.
• Water inlet temperature is • If water inlet temperature is above 55°C, the outdoor unit does not
Although electric power
operated for the sake of system protection.
supply is OK (control panel too high.
displays information), the
• If water inlet temperature is below 5°C, the outdoor unit does not
outdoor unit does not start • Water inlet temperature is operated for the sake of system protection. Wait while indoor unit
too low.
working.
warms up the water inlet temperature.
Water pump noise.
Water is flood out through
drain hose.
Sanitary water is not hot.
• Air purging is not
completely finished.
• Open the cap of air purge and charge more water until pressure
gage is indicating 2.0~2.5 bar.
• 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 0.3 bar.
• Check if the expansion tank and pressure gage operates well.
• Too much water is
charged.
• Flood out the water by opening the switch of the safety valve until
pressure gage is indicating 2.0~2.5 bar.
• Expansion tank is damaged. • Replace the expansion tank.
• Thermal protector of water • Open the side panel of the sanitary water tank and push the reset
button of the thermal protector. (for more detail information, please
tank heater is activated.
refer to installation manual of sanitary water tank.)
• Sanitary water heating is
disabled.
90 Air-to-Water Heat Pump
• Push
panel.
button and identify if
icon is displayed on the control
Check Points, Maintenance and Troubleshooting
Troubleshooting for Problem while Operation
Cause
02
Problem in Refrigerant (Inlet side) sensor
06
08
Problem in Refrigerant (Outlet side) sensor • Incorrect connection between
sensor and PCB
Problem in Water Tank sensor
13
Problem in Solar-thermal sensor
16
Problems in sensors
• PCB fault
17
Problem in Water-inlet sensor
• Sensor fault
18
Problem in Water-outlet sensor
19
Problem in Water-interlim sensor
03
Bad communication between control panel
and indoor uni
Normal Condition
• Resistance: 10k ohm at 25 centigrade
(unplugged)
’ for Remote Room Air sensor
• Resistance: 5k ohm at 25 centigrade
(unplugged)
’ for all sensors EXCEPT Remote Room
Air sensor
• Voltage: 2.5Vdc at 25 centigrade (plugged)
(for all sensors)
• Refer resistance-temperature table to
check in different temperature
• Incorrect connection between
sensor and PCB
• Wire connection between control panel
and indoor unit PCB should be tight
• PCB fault
• Output voltage of PCB should be 12Vdc
• Sensor fault
05
Bad communication between Indoor unit
and Outdoor unit
• The connector for transmission
is disconnected
• The connecting wires are
misconnected
• The communication line is
broken
• Wire connection between control panel
and indoor unit PCB should be tight
• Outdoor PCB is abnormal
53
• Indoor PCB is abnormal
09
PCB Program (EEPROM) Fault
• Electrical or mechanical damage • This error can not be permitted
a the EEPROM
• Flow switch is open while
internal water pump is working
14
Problem in Flow Switch
• Flow switch is closed while
internal water pump is not
working
• Flow switch is open while DIP
switch No. 5 of indoor unit PCB
is set as ON
15
20
Water pipe overheated
Thermal fuse is damaged
• Abnormal operation of electric
heater
• Leaving water temperature is
above 72В°C
• Flow switch should be closed while internal
water pump is working or DIP switch No. 5
of indoor unit PCB is set as ON
• Flow switch should be open while
internal water pump is not working
• If there is no problem in electric heater
control, possible maximum leaving water
temperature is 62В°C.
• Thermal fuse is cut off by
abnormal overheating of internal • This error will not be happened if
electric heater
temperature of electric heater tank is below
• Mechanical fault at the rmal fuse 90°C.
• Wire is damaged
44
Problem in outdoor temperature sensor.
• Incorrect connection between
sensor and PCB
• PCB fault
• Sensor fault
• Outdoor temperature is below
-25в„ѓ.
• Sensor connection and PCB & sensor fault
should be checked.
• This error will not be happened if outdoor
temperature is above -25в„ѓ.
Installation Manual 91
ENGLISH
Code
Description
No.
01 Problem in Remote Room Air sensor
92 Air-to-Water Heat Pump
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