LG | HN1639.NK3 | Installation guide | LG HN1616.NK3 Owner's manual

LG HN1616.NK3 Owner's manual
ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
INSTALLATION MANUAL
DEUTSCH
AIR-TO-WATER
HEAT PUMP
ΕΛΛΗΝΙΚΆ
ČEŠTINA
POLSKI
Original instruction
www.lg.com
Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.
LIMBA ROMÂNĂ
MFL68681810
Rev.04_062218
NEDERLANDS
Please read this installation manual completely before installing the
product. Installation work must be performed in accordance with the
national wiring standards by authorized personnel only. Please retain
this installation manual for future reference after reading it thoroughly.
2
TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
4
5
12
13
PREFACE
IMPORTANT SAFETY INSTRUCTIONS
INSTALLATION PART
GENERAL INFORMATION
13
14
15
20
21
24
29
30
Model Information
Model name and related information
Parts and Dimensions
Control Parts
Control Panel
Typical Installation Example
Cycle Diagram
Water cycle
32 INSTALLATION OF OUTDOOR UNIT
32
32
33
33
Conditions where Outdoor Unit is Installed
Drill a Hole in the Wall
Installation at Seaside
Seasonal wind and cautions in winter
34 INSTALLATION OF INDOOR UNIT
34
37
Conditions where Indoor Unit is Installed
Electrical Wiring
40 PIPING AND WIRING FOR OUTDOOR UNIT
40
41
42
42
45
46
48
Refrigerant Piping
Preparation for Piping
Connecting Pipe to Indoor Unit
Connecting Pipe to Outdoor Unit
Finalizing
Leakage test and Evacuation
Electrical Wiring
51 PIPING AND WIRING FOR INDOOR UNIT
51
54
54
55
56
56
57
Water Piping and Water Circuit Connection
Water pump Capacity
Pressure Drop
Performance curve
Water Quality
Frost protection
Water Volume and Expansion Vessel Pressure
58 ACCESSORIES INSTALLATION
60
60
65
66
73
74
75
76
77
Before Installation
Thermostat
Central Controller
DHW Tank and DHW Tank Kit/Solar Thermal Kit
Dry Contact
2Way Valve
3Way Valve
Air-Vent
Final check
78 CONFIGURATION
78
DIP Switch Setting
83 SERVICE SETTING
TABLE OF CONTENTS
How to enter service setting
Service setting
Service contact
Model information
RMC version lnformation
Open source license
88 INSTALLER SETTING
88
89
91
92
93
94
95
96
97
98
99
100
101
103
105
107
108
109
111
112
113
114
115
116
117
118
119
120
121
122
123
125
126
127
128
129
130
131
132
133
134
135
How to enter installer setting
Installer setting
3 Minutes Delay
Select Temperature Sensor
Dry Contact Mode
Central Control Address
Pump test run
Air cooling set temp.
Water cooling set temp
Air heating set temp.
Water heating set temp
DHW set temp
Screed drying
Heater on temperature
Water supply off temp. during cooling
Tank disinfection setting 1, 2
Tank setting 1
Tank setting 2
Heater priority
DHW time setting
TH on/off Variable, heating air
TH on/off Variable, heating water
TH on/off Variable, cooling air
TH on/off Variable, cooling water
Pump setting in heating
Pump setting. in cooling
Forced operation
CN_CC
Pump frequency setting (RPM)
Smart Grid(SG)
Seasonal auto temp
Modbus Address
CN_EXT
Add Zone
Use External Pump
3rd Party Boiler
Meter Interface
Data logging
Password initialization
Password Initialization
Power Supply Blockage (SG Ready)
Overview settings
137 COMMISSIONING
137
138
139
139
139
140
Check List before Starting Operation
Starting Operation
Starting Operation flow chart
Airborne Noise Emission
Limiting concentration
Troubleshooting
ENGLISH
83
83
84
85
86
87
3
4
PREFACE
ENGLISH
PREFACE
This installation manual is to present information and guide about understanding, installing,
and checking
.
Your careful reading before installation is highly appreciated to make no mistake and to prevent
potential risks. The manual is divided into nine chapters. These chapters are classified according
to installation procedure. See the table below to get summarized information.
Chapters
Contents
Chapter 1
• Warning and Caution concerned with safety.
• This chapter is directly related with human safety. We strongly recommend reading this
chapter carefully.
Chapter 2
• Items Inside product Box
• Before starting installation, please make it sure that all parts are found inside the product
box.
Chapter 3
• 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
Chapter 4
• Installation about the outdoor unit.
• Installation location, constraints on installation site, etc
Chapter 5
• Installation about the indoor unit.
• Installation location, constraints on installation site, etc
• Constrains when accessories are installed
Chapter 6
• 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.
Chapter 7
• How to perform piping (for water) and wiring at the indoor unit.
• Water pipe connection between the indoor unit and pre-built under floor water loop pipe.
• Electrical wiring at the indoor unit.
• System set-up and configuration.
• As many control parameters of
is adjustable by control panel, deep
understanding about this chapter is required to secure the operation flexibility of
• For more detailed information, please read the separate operation manual to use control
panel and adjust control parameters.
Chapter 8
• Information about supported accessories
• Specification, Constraints, and wiring are described.
• Before purchasing accessories, please find supported specification to buy proper one.
Chapter 9
• Test operation and check point while test running.
Chapter 10
• Check points before starting operation are explained.
• Troubleshooting, maintenance, and error code list are presented to correct problems.
REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.
TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.
IMPORTANT SAFETY INSTRUCTIONS
5
Read the precautions in this manual carefully before operating the unit.
This symbol indicates that the Operation Manual should be read carefully.
This symbol indicates that a service personnel should be handling this equipment with
reference to the Installation Manual.
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid
dangerous situations and ensure peak performance of your
product
! WARNING
It can result in serious injury or death when the directions are
ignored
! CAUTION
It can result in minor injury or product damage when the
directions are ignored
! WARNING
Installation
• Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
- There is risk of fire or electric shock.
• For electrical work, contact the dealer, seller, a qualified
electrician, or an Authorized Service Center.
- There is risk of fire or electric shock.
• Always ground the unit.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric
shock
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not install, remove, or reinstall the unit by yourself
(customer).
- There is risk of fire, electric shock, explosion, or injury
• For antifreeze, always contact the dealer or an authorized
service center.
- Almost the antifreeze is a toxic product.
• For installation, always contact the dealer or an authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install the unit on a defective installation stand.
- It may cause injury, accident, or damage to the unit.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the unit could fall with it, causing
property damage, unit failure, and personal injury.
• Do not install the water pipe system as Open loop type.
- It may cause failure of unit.
• Use a vacuum pump or inert (nitrogen) gas when doing
leakage test or purging air. Do not compress air or oxygen and
do not use flammable gases.
- There is the risk of death, injury, fire or explosion.
• Make sure the connected condition of connector in product
after maintenance.
- Otherwise, it may causeproduct damage
• Do not touch leaked refrigerant directly.
- There is risk of frostbite.
• Compliance with national gas regulations shall be observed.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• The installation of pipe-work shall be kept to a minimum.
IMPORTANT SAFETY INSTRUCTIONS
7
Operation
• Take care to ensure that power cable could not be pulled out
or damaged during operation.
- There is risk of fire or electric shock.
• Do not place anything on the power cable.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
ENGLISH
• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts. A vacuum valve shall
be provided to evacuate the interconnecting pipe and/or any
uncharged refrigerating system part.
• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorises
their competence to handle refrigerants safely in accordance
with an industry recognised assessment specification.
• Pipe-work shall be protected from physical damage and shall
not be installed in an unventilated space, if that space is
smaller than
1) The minimum floor area : 49.4 m2
2) The maximum refrigerant charge amount : 2.4 kg
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.
• Ducts connected to an appliance shall not contain an ignition
source.
• Copper in contact with refrigerants shall be oxygen-free or
deoxidized, for example Cu-DHP as specified in EN 12735-1
and EN 12735-2.
8
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Do not touch (operate) the unit with wet hands.
- There is risk of fire or electric shock.
• Do not place a heater or other appliances near the power
cable.
- There is risk of fire or electric shock.
• Do not allow water to run into electric parts.
- There is risk of fire, failure of the unit, or electric shock.
• Do not store or use flammable gas or combustibles near the
unit.
- There is risk of fire or failure of unit.
• Do not use the unit in a tightly closed space for a long time.
- It may cause damage to the unit. When flammable gas
• leaks, turn off the gas and open a window for ventilation
before turning the unit on.
- There is risk of explosion or fire.
• If strange sounds, or smell or smoke comes from unit, turn the
breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane. If
possible, remove the unit from the window before the
hurricane arrives.
- There is risk of property damage, failure of unit, or electric
shock.
• Do not open the front cover of the unit while operation. (Do
not touch the electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or unit failure.
• Do not touch any electric part with wet hands. you should be
power off before touching electric part.
- There is risk of electric shock or fire.
• Do not touch refrigerant pipe and water pipe or any internal
parts while the unit is operating or immediately after operation.
- There is risk of burns or frostbite, personal injury.
• If you touch the pipe or internal parts, you should be wear
protection or wait time to return to normal temperature.
- Otherwise , it may cause burns or frostbite, personal injury.
IMPORTANT SAFETY INSTRUCTIONS
9
ENGLISH
• Turn the main power on 6 hours ago before the product
starting operation.
- Otherwise, it may cause compressor damage.
• Do not touch electric parts for 10 minutes after main power
off.
- There is risk of physical injury, electric shock.
• The inside heater of product may operate during stop mode. It
is intended to protect the product.
• Be careful that some part of the control box are hot.
- There is risk of physical injury or burns.
• When the unit is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not be poured to the unit directly.
- There is risk of fire, electric shock, or unit damage.
• Ventilate the unit from time to time when operating it together
with a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the unit.
- There is risk of electric shock.
• Take care to ensure that nobody could step on or fall onto the
unit.
- This could result in personal injury and unit damage.
• For installation, always contact the dealer or an Authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• If the unit is not used for long time, we strongly recommend
not to switch off the power supply to the unit.
- There is risk of water freezing.
• The appliance shall be stored in a well-ventilated area where
the room size corresponds to the room area as specified for
operation.
• The appliance shall be stored in a room without continuously
operating open flames (for example an operating gas
appliance) and ignition sources (for example an operating
electric heater).
10 IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of
flammable refrigerants.
• When mechanical connectors are reused indoors, sealing parts
shall be renewed. When flared joints are reused indoors, the
flare part shall be re-fabricated.
• Be aware that refrigerants may not contain an odor.
• Periodic(more than once/year) cleaning of the dust or salt
particles stuck on the heat exchangers by using water.
• Keep any required ventilation openings clear of obstruction.
! CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or
repair of unit.
- Low refrigerant levels may cause failure of unit.
• Keep level even when installing the unit.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the unit.
- Avoid personal injury.
Operation
• Do not use the unit for special purposes, such as preserving
foods, works of art, etc.
- There is risk of damage or loss of property.
• Use a soft cloth to clean. Do not use harsh detergents,
solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic
parts of the unit.
• Do not step on or put anything on the unit.
- There is risk of personal injury and failure of unit.
IMPORTANT SAFETY INSTRUCTIONS
11
ENGLISH
• Use a firm stool or ladder when cleaning or maintaining the
unit.
- Be careful and avoid personal injury.
• Do not turn on the breaker or power under condition that front
panel cabinet, top cover, control box cover are removed or
opened.
- Otherwise it may cause fire, electric shock, explosion or
death.
• The appliance shall be disconnected from its power source
during service and when replacing parts.
• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.
• The Installation kit supplied with the appliance are to be used
and that old Installation kit should not be reused.
• 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. Installation work must be performed in
accordance with the national wiring standards by authorized
personnel only.
• This equipment shall be provided with a supply conductor
complying with the national regulation.
• The instructions for service to be done by specialized
personnel, mandated by the manufacturer or the authorized
representative may be supplied in only one Community
language which the specialized personnel understand.
• This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the
appliance by a person responsible for their safety. Children
should be supervised to ensure that they do not play with the
appliance.
12 INSTALLATION PART
ENGLISH
INSTALLATION PART
Thank you for choosing LG Electronics Air-to-Water Heat Pump
Before starting installation, please make it sure that all parts are found inside the product box.
INDOOR UNIT BOX
Item
Image
Quantity
Item
Image
Quantity
Indoor unit
1
Installation
Sheet
1
Installation
Manual
1
Remote
controller
remover
1
Shut-off valve
2
OUTDOOR UNIT BOX
Item
Image
Quantity
Outdoor Unit
U4 Chassis
(Product heating capacity :
5kW, 7kW, 9kW)
1
Outdoor Unit
U3 Chassis
(Product heating capacity :
12kW, 14kW, 16kW)
1
Drain Cap
2
Drain Nippl
1
GENERAL INFORMATION 13
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
U
W
0
9
6
A
3
Series Number
3. Series
Function
A : General heating heat pump
Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
8 : 3 phase 380-415 V~ 50 Hz
Heating Capacity (kW)
05 : 5kW 07 : 7kW 09 : 9kW 12 : 12kW
14 : 14kW 16 : 16kW
Model Type
W : Inverter Heat Pump
Classification
U : Outdoor Unit
Air-to-Water Heat Pump for R410A
A
H
N
W
1
6
6
0
6
A
3
Series Number
3. Series
Function
A : General heating heat pump
Heater Capacity (kW)
06 : 6kW
09 : 9kW
Heater Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
8 : 3 phase 380-415 V~ 50 Hz
Heating Capacity (kW)
09 : 9kW 16 : 16kW
Model Type
W : Inverter Heat Pump
Classification
N : Indoor Unit
Air-to-Water Heat Pump for R410A
ENGLISH
GENERAL INFORMATION
14 GENERAL INFORMATION
ENGLISH
Model name and related information
Model Name
Outdoor Unit
Phase
1Ø
Capacity
Indoor Unit
Phase
Capacity
Built-In
Electric
Heater(kW)
Power
Source
(Electric
Heater)
Heating Cooling
(kW)*1
(kW)*2
5 kW
5.0
5.0
7 kW
7.0
7.0
9 kW
9.0
9.0
12.0
10.4
14.0
12.0
16.0
13.0
12.0
10.4
14.0
12.0
16.0
13.0
12 kW
1Ø
14 kW
6 (3+3)
220-240 V~
50 Hz
16 kW
16 kW
12 kW
3Ø
Capacity
14 kW
16 kW
3Ø
380-415 V~
9 (3+3+3)
50 Hz
*1 : tested under Eurovent Heating condition
(water temperature 30°C ’ 35°C at outdoor ambient temperature 7°C / 6°C)
*2 : tested under Eurovent Cooling condition
(water temperature 23°C ’ 18°C at outdoor ambient temperature 35°C / 24°C)
*3 : All appliances were tested at atmospheric pressure.
Power
Source
(Unit)
220-240 V~
50 Hz
380-415 V~
50 Hz
GENERAL INFORMATION 15
ENGLISH
Parts and Dimensions
Indoor unit(External)
(unit : mm)
315
315
850
490
490
Description
No
Name
Remark
1
Control Panel
Built-in Remote Controller
16 GENERAL INFORMATION
(unit : mm)
484
13
9
289.6
12
10
7
8
6
14
15
5
1
2
16
16
4
3
84.5
116
123
484
76
41
36.9
46.4
63.4
847.8
ENGLISH
Indoor unit(Internal)
11
GENERAL INFORMATION
No
Name
Remark
1
Leaving Water Pipe
Male PT 1 inch
2
Entering Water Pipe
Male PT 1 inch
3
Refrigerant Pipe
Ø9.52mm
4
Refrigerant Pipe
Ø15.88mm
5
Water Pump
Max Head 9.5 / 7 / 6 m
6
Safety Valve
Open at water pressure 3 bar
7
Control Box
PCB and terminal blocks
8
Thermal switch
Cut-off power input to electric heater at 90 °C
(manual return at 55C)
9
Flow Switch
Minimum operation range at 15 LPM.
10
Plate Heat Exchanger
Heat exchange between refrigerant and water
11
Pressure Gage
Indicates circulating water pressure
12
Expansion Tank
Absorbing Volume change of heated water
13
Air Vent
Air purging when Charging water
14
Electric Heater
Please refer to the below Page
‘Model name and related information’
15
Strainer
Filtering and stacking particles inside circulating water
16
Shut-off valve
To drain or to block water when pipe connecting
ENGLISH
Description
17
18 GENERAL INFORMATION
Product Heating
Capacity :
12kW,14kW,16kW
U3 Chassis
(unit : mm)
Supporter
490
ENGLISH
Outdoor unit(External)
Description
No
Name
1
Liquid-side Service Valve
2
Gas-side Service Valve
3
Air discharge Grill
GENERAL INFORMATION 19
ENGLISH
Product Heating
Capacity :
5kW,7kW,9kW
U4 Chassis
(unit : mm)
Supporter
Description
No
Name
1
Liquid-side Service Valve
2
Gas-side Service Valve
3
Air discharge Grill
20 GENERAL INFORMATION
ENGLISH
Control Parts
Control Box : Indoor Unit
1Ø Electric Heater Model
3Ø Electric Heater Model
Description
No
Name
Remark
1
Terminal blocks
The terminal blocks allow easy connection of field wiring
2
Unit ELB
The ELB protects the unit against overload or short circuit
3
Water tank heater
ELB(optional)
The ELB protects the water tank heater in sanitary water tank
against overload or short circuit
4
Magnetic switch
5
Main PCB
The main PCB(Printed Circuit Board) controls the functioning
of the unit
GENERAL INFORMATION 21
ENGLISH
Control Panel
Operation display
window
Back button
OK
On/Off Button
OK Button
Up/Down/Left/Right
Button
Operation display window
Operation and Settings status display
Back button
When you move to the previous stage from the menu’s setting stage
Up/down/left/right button
When you change the menu’s setting value
OK button
When you save the menu’s setting value
On/Off button
When you turn ON/OFF the air conditioner
Wiring Diagram : Indoor Unit
- Refer to the wiring diagram inside the control box.
Circuit Diagram : Indoor Unit
- Refer to the circuit diagram inside the front panel.
Wiring Diagram : Outdoor Unit
- Refer to the attached wiring diagram in the outdoor unit.
22 GENERAL INFORMATION
ENGLISH
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 1Ø, Outdoor : 1Ø)
GENERAL INFORMATION 23
ENGLISH
Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring)
(Indoor : Electric Heater 3Ø, Outdoor : 3Ø)
24 GENERAL INFORMATION
ENGLISH
Typical Installation Example
! CAUTION
If
is installed with pre-existing boiler, the boiler and
should not be
operated together. If entering water temperature of
is above 55°C, the system
will stop operation to prevent mechanical damage of the product. For detailed electric wiring
and water piping, please contact authorized installer.
Some installation scenes are presented for example. As these scenes are conceptual figures,
installer should optimize the installation scene according to the installation conditions.
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
M/F
Fan coil unit Floor heating loop Radiator
!
NOTE
• Room thermostat
- Type of thermostat and specification should be complied with chapter 4 and chapter 7 of
installation manual.
• 2way valve
- It is important to install 2way valve to prevent dew condensation on the floor and radiator
while cooling mode.
- Type of 2way control valve and specification should be complied with chapter 4 and
chapter 7 of
installation manual.
- 2way valve should be installed at the supply side of the collector.
• By-pass valve
- To secure enough water flow rate, by-pass valve should be installed at the collector.
- By-pass valve should guarantee minimum water flow rate in any case. Minimum water
flow rate is described in water pump characteristics curve.
M/F
High Temperature
Room Thermostat(Field supply)
Shut-off valve
Low Temperature
2way valve (Field supply)
By-pass valve(Field supply)
Magnetic Filter (Recommended, Field supply)
GENERAL INFORMATION 25
ENGLISH
CASE 2: Connecting DHW Tank
Outdoor
Indoor
Outdoor Unit
Indoor Unit
M/F
Hot water
Fan coil unit Floor heating loop Radiator
DHW
tank
City water
!
NOTE
DHW
• DHW tank
tank
- It should be equipped with internal
electric heater to generate sufficient heat energy in
very cold season.
- DHW : Domestic Hot Water
• 3way valve
- Type of 3way valve and specification should be complied with chapter 4 and chapter 7 of
installation manual.
M/F
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve
(Field supply)
Shut-off valve
By-pass valve(Field supply)
Magnetic Filter (Recommended)
3way valve
(Field supply)
26 GENERAL INFORMATION
ENGLISH
CASE 3: Connecting Solar thermal system
Outdoor
Indoor
Outdoor Unit
Indoor Unit
M/F
Solar heat source
Hot water
Fan coil unit Floor heating loop Radiator
DHW
tank
City water
!
NOTE
• DHW tank
- It should be equipped with internal electric heater to generate sufficient heat energy in
very cold season.
- DHW : Domestic Hot Water
• Pump
- Maximum power consumption of pump should be less than 0.25kW.
M/F
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve (Field supply)
Shut-off valve
By-pass valve(Field supply)
Magnetic Filter (Recommended)
3way valve
(Field supply)
Pump(Field supply)
GENERAL INFORMATION 27
ENGLISH
CASE 4: Connecting 2nd Circuit
[Room A] Main Zone zone (Low Temp.)
Outdoor
Mix
Indoor
Outdoor Unit
Indoor Unit
Mix Kit
Floor heating loop
Floor heating loop
Buffer
Tank
M/F
[Room B] Additional zone (High Temp.)
Radiator
!
Radiator
NOTE
• Mix Kit
- You can install it when you want to set the temperature of two rooms individually
- When heating, Main Zone can not be higher than Add Zone.
- When cooling, Main Zone can not be lower than Add Zone.
- The types and specifications of the Mix Kit are to comply with Chapters 4 and 7 of the
THERMA V Installation Manual.
M/F
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve (Field supply)
Shut-off valve
By-pass valve(Field supply)
3way valve
(Field supply)
Pump(Field supply)
Magnetic Filter (Recommended)
Air vent (Field supply)
Mix Kit (Field supply)
Pressure Regulation valve
(Field supply)
28 GENERAL INFORMATION
ENGLISH
CASE 5: Connecting 3rd Party
3 Way V/V direction
Boiler On : Ơ
Boiler Off : ȯ
Outdoor
Indoor
Outdoor Unit
Indoor Unit
Boiler
Buffer
Tank
M/F
!
Floor
heating loop
Floor
heating loop
Floor
heating loop
NOTE
• DHW tank
- 3rd Party Boiler
- You can control the boiler automatically and manually by comparing the outside
temperature and the set temperature.
• 3way valve
- It is a valve for DHW use.
- Not installed when installing Buffer Tank
- Type of 3way valve and specification should be complied with chapter 4 and chapter 7 of
installation manual.
M/F
High Temperature
Room Thermostat(Field supply)
Low Temperature
2way valve (Field supply)
Shut-off valve
By-pass valve(Field supply)
3way valve
(Field supply)
Pump(Field supply)
Magnetic Filter (Recommended)
Air vent (Field supply)
Aquastat V/V
Reverse check valve
GENERAL INFORMATION 29
ENGLISH
Cycle Diagram
EEV
LIQUID SIDE
Service
Valve
(3 way)
Indoor Unit
Plate Heat
Exchanger
TH6 TH7
Th2
Water. Out
Outdoor Unit
Heat Exchanger
Water. In
TH8
Th3
TH4
Pressure
Sensor
GAS SIDE
TH1
(Accessories)
Service
Valve
(3 way)
4 way
Valve
TH5
Accumulator
Compressor
Description
Category Symbol
Indoor
Unit
Outdoor
Unit
Meaning
PCB
Connector
Remarks
- Optional accessory
(being sold separately)
- Not shown in diagram
Th1
Remote air temperature sensor
CN_ROOM
Th2
Inlet evaporator temperature sensor
CN_PIPE_IN
Th3
Outlet evaporator temperature
sensor
CN_PIPE_OUT
Th4
Compressor-suction pipe
temperature sensor
CN_SUCTION
Th5
Compressor-discharge pipe
temperature sensor
CN_DISCHA
Th6
Condenser temperature sensor
CN_C_PIPE
Th7
Outdoor air temperature sensor
CN_AIR
Th8
Condenser middle temperature
sensor
CN_MID
EEV
Electronic Expansion Valve
CN_LEV1
- Meaning is expressed based on
Cooling mode.
- Description is expressed based on
Cooling mode.
Ref In
Ref Out
TH1
F/S
M/F
Magnetic Filter
(Recommended)
TH3
Basic installation
(IDU + ODU)
Indoor Unit
(Hydro-Kit)
EXP/TANK
TH4
TH5
W/PUMP_1
E/HT
TH8
Radiator
2WAY
V/V_1
Underfloor
Heating
3WAY
V/V_1
Fan
Coil
Unit
City Water
DHW Tank
DHW Tank is
Installed
(DHW tank is
Necessary)
TH6
B/HT
Shower
W/PUMP_2
TH7
Solar
Panel
SOLAR THERMAL
SYSTEM
Solar
Thermal
Componets
Solar thermal system is
connected
(Solar thermal kit is
necessary)
3WAY
V/V_2
ENGLISH
Remote Room
Temp. Sensor
30 GENERAL INFORMATION
Water cycle
GENERAL INFORMATION 31
Category
Symbol
TH1
TH2
TH3
TH4
TH5
F/S
E/HT
Indoor
Unit
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
Electric Heater
W_PUMP1 Internal Water Pump
EXP/TANK Expansion Tank
TH8
CTR/PNL
PCB Connector
Remarks
CN_PIPE_OUT
- Meaning is expressed based on Cooling mode.
CN_PIPE_IN
CN_TH3
CN_FLOW1
- Heating capacity is divided into two level : partial
capacity by E/HEAT(A) and full capacity by
CN_E/HEAT(A) E/HEAT(A) + E/HEAT(B).
CN_E/HEAT(B) - Operating power(230 V AC 50 Hz) of E/HEAT(A)
and E/HEAT(B) are supplied by external power
source via relay connector and ELB.
CN_MOTOR1
(no connector)
Remote Air temperature sensor
CN_ROOM
Control Panel (or ‘Remote Controller’)
CN_REMO
2WAY V/V_1 To control water flow for Fan Coil Unit
- TH3, TH4, and TH5 are connected at 6 pin type
connector CN_TH3.
CN_2WAY(A)
- Water Pump is connected at CN_MOTOR1
- Absorb volume change of heated water,
- Optional accessory (sold separately)
- Model : PQRSTA0
- Pre built-in at indoor unit
- 3rd party accessory and Field installation (sold
separately)
- 2 wire NO or NC type 2way valve is supported.
Magnetic Filter
(No connector)
- 3rd party accessory and Field installation (sold
separately)
- It is strongly recommended to install an additional
filter on the heating water circuit.
DHW Tank
(No connector)
- 3rd party accessory and Field installation
(sold separately)
- Generating and storing DHW by AWHP or built-in
electric heater
Electric Heater
CN_B/HEAT(A)
- 3rd party accessory and Field installation
(usually built-in at W/TANK)
- Supplying additional water heating capacity.
3WAY V/V_1
- Flow control for water which is leaving from
indoor unit.
- Flow direction switching between underfloor and
water tank
CN_3WAY(A)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
CITY WATER
Water to be heated by Indoor unit and B/HT of
W/TANK
(no connector)
- Field installation
(no connector)
- Field installation
- TH6 and TH7 are connected at 4 pin type connector
CN_TH4.
- TH6 is a part of DHW tank kit.(Model:PHLTA)
- TH7 is a part of solar thermal kit (Model:PHLLA)
M/F
W/TANK
B/HT
Water
Heating
SHOWER
TH6
TH7
3WAY V/V_2
Water supplied to end-user
W/TANK water temperature sensor
Solar-heated water temperature sensor
- Flow control for water which is heated and
circulated by SOLAR THERMAL SYSTEM.
- Flow direction switching between SOLAR
THERMAL SYSTEM and W/TANK
Solar
Heating
W_PUMP/2 External Water Pump
SOLAR
THERMAL
SYSTEM
- This system can include following components
: Solar panel, Sensors, Thermostats, Interim heat
exchanger, Water pump, etc.
- To utilized hot water heated by SOLAR THERMAL
SYSTEM, end-user must by LG AWHP Solar-Kit.
CN_TH4
CN_3WAY(B)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way 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)
ENGLISH
Description
32 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 o
sta r
cle
s
300
600
Minimum service space
(unit : mm)
700
Drill a Hole in the Wall
- If making a hole to the wall is required to connect pipe between the indoor unit and the outdoor
unit, please follow below descriptions.
Drill the piping hole with a ø70mm hole core drill.
Piping hole should be slightly slant to the outdoor side to prevent raindrop into indoor side.
Wall
Indoor
Outdoor
5~7mm
ENGLISH
INSTALLATION OF OUTDOOR UNIT
INSTALLATION OF OUTDOOR UNIT 33
ENGLISH
Installation at Seaside
! CAUTION
• Air conditioners should not be installed in areas where corrosive gases, such as acid or
alkaline gas, are produced.
• Do not install the product where it could be exposed to sea wind (salty wind) directly. It
can result corrosion on the product. Corrosion, particularly on the condenser and
evaporator fins, could cause product malfunction or inefficient performance.
• If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea
wind. Otherwise it needs additional anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)
- 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
- In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the
sea wind.
Windbreak
Sea wind
- It should be strong enough like concrete to
prevent the sea wind from the sea.
- The height and width should be more than 150%
of the outdoor unit.
- It should be keep more than 700 mm of space
between outdoor unit and the windbreak for easy
air flow.
- Select a well-drained place.
Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat
exchanger by using water
Seasonal wind and cautions in winter
• Sufficient measures are required in a snow area or severe cold area in winter so that product
can be operated well.
• Get ready for seasonal wind or snow in winter even in other areas.
• Install a suction and discharge duct not to let in snow or rain.
• Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes
on the air suction hole, the system may malfunction. If it is installed at snowy area, attach the
hood to the system.
• Install the outdoor unit at the higher installation console by 500 mm than the average snowfall
(annual average snowfall) if it is installed at the area with much snowfall.
• Where snow accumulated on the upper part of the Outdoor Unit by more than 100 mm, always
remove snow for operation.
- 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)
- Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
34 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.
!
250
Service Space
- 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.
NOTE
• The default setting of the product is for heating only.
To use the cooling system together, DIP S / W 4
should be turned ON and additional drain pan
accessory should be installed.
200
200
1300
ENGLISH
INSTALLATION OF INDOOR UNIT
Minimum service space
(unit : mm)
INSTALLATION OF INDOOR UNIT 35
! CAUTION
After installation is completed, return the remote control to its original state.
!
NOTE
Use a flat-blade screwdriver or a coin to remove the remote control case.
Step 2. After releasing five screws, detach front cover from the indoor unit. While detaching the
front cover, grab the left and right sides of the front cover. Then pull into upward
direction.
Bottom screws
Upper screw
Step 3. Attach "Installation Sheet" to the wall and mark the location of bolts.
This sheet helps to find correct location to the bolts.
! CAUTION
The sheet should be attached level. If not, the supporting plate and the indoor unit will not
be mounted correctly.
ENGLISH
Mounting to Wall
Step 1. Disconnect the remote control case from the front panel and disconnect the remote
control cable.
36 INSTALLATION OF INDOOR UNIT
ENGLISH
Step 4. Detach the Installation sheet. Screw bolts at the hole marks on the wall.
When screwing bolts, use M8 ~ M11 anchor bolts to secure hanging the indoor unit.
!
NOTE
Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11
anchor bolts are more preferred.
Step 5. Hang the indoor unit at the supporting plate.
INSTALLATION OF INDOOR UNIT 37
Two kind of cables should be connected to the outdoor unit : One is ‘Power cable’, the other one
is ‘Connecting cable’. Power cable is a cable which is used to supply external electricity to the
outdoor unit. This cable is generally connected between external power source (such as main
electric power distribution panel of user’s house) and the outdoor unit. Connecting cable is, on
the other hand, used to connect between the outdoor unit and the indoor unit to supply electric
power to the indoor unit and to establish the communication between the outdoor unit and the
indoor unit.
Procedure for wiring to the outdoor unit is four steps. Before starting wiring, check if wire
specification is suitable and read following directions and cautions VERY carefully.
! CAUTION
The power cord connected to the outdoor
unit should be complied with IEC 60245 or
HD 22.4 S4 (This equipment shall be
provided with a cord set complying with the
national regulation.)
NORMAL CROSS-SECTIONAL AREA
1 Phase(Ø)
GN
The connecting cable connected to the
outdoor unit should be complied with
IEC 60245 or HD 22.4 S4 (This equipment
shall be provided with a cord set complying
with the national regulation.)
/Y
L
20
mm
3 Phase(Ø)
GN
/Y
L
20
mm
Model Name
Phase
Capacity
5 kW
7 kW
9 kW
1Ø
12 kW
14 kW
16 kW
12 kW
3Ø
14 kW
16 kW
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2
Area
(mm2)
GN
/Y
4
L
20
mm
6
2.5
When the connection line between the
indoor unit and outdooor unit is over 40m,
connect the telecommunication line and
power line separately.
In order to avoid a hazard due to inadvertent resetting of the thermal cut-out, this appliance
must not be supplied through an external switching device, such as a timer, or connected to a
circuit that is regularly switched on and off by the utility.
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 hazrd.
ENGLISH
Electrical Wiring
38 INSTALLATION OF INDOOR UNIT
ENGLISH
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
Round pressure terminal
Power wire
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
- When connecting wiring which is the same thickness, do as shown in the figure below.
! WARNING
Make sure that the screws of the terminal are free from looseness.
INSTALLATION OF INDOOR UNIT 39
This equipment complies with respectively:
- EN/IEC 61000-3-12 (1) provided that the short-circuit power Ssc is greater than or equal to the
minimum Ssc value at the interface point between the user's supply and the public system. It is
the responsibility of the installer or user of the equipment to ensure, by consultation with the
distribution network operator if necessary, that the equipment is connected only to a supply
with respectively: Ssc greater than or equal to the minimum Ssc value.
Model Name
Phase Capacity
5 kW
7 kW
9 kW
1Ø
12 kW
14 kW
16 kW
Minimum Ssc Value
3,142
Model Name
Phase Capacity
12 kW
3Ø
14 kW
16 kW
Minimum Ssc Value
2,348
- European/International Technical Standard setting the limits for voltage changes, voltage
fluctuations and flicker in public low-voltage supply systems for equipment with rated current
≤ 75A.
- European/International Technical Standard setting the limits for harmonic currents produced by
equipment connected to public low-voltage systems with input current ≤16A of > 75A per
phase.
Circuit Breaker Specification
Perform the electrical wiring work according to
Main
the electrical wiring connection.
power source
- All wiring must comply with local
requirements.
- Select a power source that is capable of
Indoor
supplying the current required by the air
conditioner.
- Use a recognized ELCB(Electric Leakage
Circuit Breaker) between the power source
and the unit. A disconnection device to
adequately disconnect all supply lines must be fitted.
- Model of circuit breaker recommended by authorized personnel only
Model Name
Phase Capacity
5 kW
7 kW
9 kW
1Ø
12 kW
14 kW
16 kW
12 kW
3Ø
14 kW
16 kW
ELCB
30A
40A
20A
ELCB
Switch box
Outdoor
ENGLISH
Point for attention regarding quality of the public electric power supply
40 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
PIPING AND WIRING FOR OUTDOOR UNIT
Procedures about refrigerant piping and electric wiring at the outdoor are described in this
chapter. Most of procedures are similar to those of LG Air Conditioner.
Refrigerant Piping
Before starting refrigerant piping, constraints in pipe length and elevation should be examined.
After resolving all constraints, some preparations are required to proceed. Then connecting pipe
to the outdoor and the indoor unit is beginning.
Constraints in Pipe Length and Elevation
Capacity
Pipe Size (mm : inch)
(Diameter : Ø)
Gas
5kW
7kW
9kW
12kW
14kW
16kW
Liquid
Standard
Max.
Standard
Max.
*Additional
Refrigerant
(g/m)
7.5
50
0
30
40
Length A (m)
15.88(5/8") 9.52(3/8")
Indoor unit
A
Elevation B (m)
A trap is not necessary
when the outdoor unit is
installed in a higher
position than the indoor
unit.
Outdoor unit
A
B
Outdoor unit
B
Indoor unit
! CAUTION
1 Standard pipe length is 7.5m If the pipe length is longer than 7.5m, additional charge of
the refrigerant is required according to the table.
• Example : If 16kW model is installed at a distance of 50m, 1,700g of refrigerant should
be added according to following formula : (50-7.5) x 40g = 1,700g
2 Rated capacity of the product is based on standard length and maximum allowable length
is based on the product reliability in the operation.
3 Improper refrigerant charge may result in abnormal operation.
!
NOTE
Fill in the f-gas Label attached on outdoor about the quantity of the fluorinated greenhouse
gases (This note about f-gas label may not apply depending on your product type or market.)
① Manufacturing site (See Model Name label)
② Installation site (If possible being placed adjacent to the service points for the addition or
removal of refrigerant)
③ The total Charge (① + ②)
PIPING AND WIRING FOR OUTDOOR UNIT 41
- Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the
following procedure.
- Use the de-oxidised copper as piping materials to install.
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.
- Cut the cable 1.5m longer than the pipe
length.
Step 2. Burrs removal
- Completely remove all burrs from the cut
cross section of pipe/tube.
- Put the end of the copper tube/pipe to
downward direction as you remove burrs in
order to avoid to let burrs drop in the tubing.
Copper
tube
Slanted Uneven Rough
90°
Pipe
Reamer
Point down
Flare nut
Step 3. Putting nut on
- Remove flare nuts attached to indoor and
outdoor units, than put them on pipe/tube
having completed burr removal. (Not
possible to put them on after flaring work)
Copper tube
<Wing nut type>
Step 4. Flaring work.
- Carry out flaring work using dedicated flaring
tool for R-410A refrigerant as shown below.
A inch (mm)
Pipe diameter
Inch (mm) Wing nut type Clutch type
Bar
"A"
Copper pipe
<Clutch type>
Ø1/4 (Ø6.35)
Ø3/8 (Ø9.52)
Ø1/2 (Ø12.7)
0.04~0.07
(1.1~1.8)
0~0.02
(0~0.5)
Ø5/8 (Ø15.88)
Smooth all round
- Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Inside is shiny without scratches
= Improper flaring =
Step 5. Check
- Compare the flared work with right figure.
- If flare is seemed to be defective, cut off the
flared section and do flaring work again.
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
ENGLISH
Preparation for Piping
42 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
Connecting Pipe to Indoor Unit
Connecting pipe to the indoor unit is two steps. Read following directions carefully.
Step 1. Pre-tightening.
- Align the center of the pipes and sufficiently
tighten the flare nut by hand.
Indoor unit tubing
Step 2. Tightening.
- Tighten the flare nut with a wrench.
- Tightening torque is as following.
Flare nut
Pipings
Open-end wrench (fixed)
Flare nut
Outside diameter
mm
inch
6.35
1/4
9.52
3/8
12.7
1/2
15.88
5/8
19.05
3/4
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Torque wrench
Connection pipe
Indoor unit tubing
Connecting Pipe to Outdoor Unit
Connecting pipe to the outdoor unit is five steps including PCB setting.
Step 1. Determine direction of pipes.
- The pipes can be connetable in three directions.
- The directions are expressed in below figure.
- When connecting in a downward direction, knock out the knock-out hole of the base pan.
Backward
Backward
Sideways
Forward
Forward
Knock-out
Base pan
Sideways
PIPING AND WIRING FOR OUTDOOR UNIT 43
Outside diameter
mm
inch
6.35
1/4
9.52
3/8
12.7
1/2
15.88
5/8
19.05
3/4
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Continuous
Torque wrench
Outdoor unit
Step 3. Preventing entering of foreign objects
- 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.
Liquid side piping
Gas side piping
Connecting wire
Drain hose
(if necessary)
Connection pipe
Putty or insulating material
(produced locally)
ENGLISH
Step 2. Tightening
- Align the center of the pipes and sufficiently
tighten the flare nut by hand.
- Tighten the flare nut with a wrench until the
wrench clicks
- Tightening torque is as following.
44 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
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.
Control Terminal
(Terminal for
Connecting Cable)
Main Power
Terminal
(Terminal for
Power Cable)
Cable Clamp
(or Cord Clamp)
Cable Clamp
(or Cord Clamp)
Water
Outlet
Water
Inlet
Side Panel
Insulation pad
When connecting power cable, make sure the
rubber bushes are properly attached in knock-out
holes after removing the Insulation pad.
! CAUTION
After checking and confirming following conditions, start wiring work.
• 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.
• Provide a circuit breaker switch between power source and the outdoor unit.
• 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.
• Check the specification of power source such as phase, voltage, frequency, etc.
• Confirm that electrical capacity is sufficient.
• Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
• Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
• Provide an ELB(electric leakage breaker) when the installation place is wet or moist.
• 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
• Ground wire to ground outdoor unit to prevent electrical shock.
PIPING AND WIRING FOR OUTDOOR UNIT 45
ENGLISH
! CAUTION
The Power cord connected to the unit should be selected according to the following
specifications.
Finalizing
After pipes are connected and electric cables are wired, pipe forming and some tests are
remained. Especially, careful attention is required while proceeding leakage test because the
Seal a small
leakage of the refrigerant effects degrade of performance
directly. Also, it is very hard to find
opening around
leaked point after all installation procedures are finished.
the pipings with
gum type sealer.
Pipe Forming
Pipe
Drain hose
(not used)
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Do pipe forming by wrapping
Plastic the connecting
cable and refrigerant pipe
(between the indoor
band
unit and outdoor unit) with thermal insulation
material and secure it with two kinds of vinyl
tape.
- Tape the refrigerant pipe, power cable and
connecting cable from down to up.
- Secure the taped pipe is along with the
exterior wall. Form a trap to prevent water
entering the room and electrical part.
- Fix the taped pipe onto the wall by saddle or
equivalent.
Taping Procedure
- 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.
- Secure the taped pipe along the exterior wall using saddle or equivalent.
- Trap is required to prevent water from entering into electrical parts.
Seal a small
opening around
the pipings with
gum type sealer.
sealant.
Plastic
band
Drain hose
(not used)
Connecting
cable
Taping
Refrigerat minimum
50 mm
Pipes
Power Cable
• Trap is required to prevent water from entering
into electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
sealant.
Trap
Trap
46 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
Leakage test and Evacuation
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
- Pressure in the system rises.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze and block capillary tubing.
- Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and
vacuumed to remove incondensible gas and moisture in the system.
Preparation
- Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have
been properly connected and all wiring for the test run has been completed. Remove the
service valve caps from both the gas and the liquid side on the outdoor unit. Check that both the
liquid and the gas side service valves on the outdoor unit are kept closed at this stage.
Leakage test
- Connect the manifold valve(with pressure gauges) and dry nitrogen gas cylinder to this service
port with charge hoses.
! CAUTION
Be sure to use a manifold valve for leakage test. If it is not available, use a stop valve for this
purpose. The "Hi" knob of the manifold valve must always be kept close.
• Pressurize the system to no more than 3.0 Mpa with dry nitrogen gas and close the
cylinder valve when the gauge reading reached 3.0 Mpa Next, test for leaks with liquid
soap.
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
Indoor unit
system. Usually, the cylinder is used in a vertical standing
position.
• 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
Outdoor unit
• 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.
Manifold valve
Lo
Hi
Pressure
gauge
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
PIPING AND WIRING FOR OUTDOOR UNIT 47
Indoor unit
Outdoor unit
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is less
than 10 m(33 ft)
If tubing length is
longer than 10 m(33 ft)
30 min. or more
60 min. or more
0.8 torr or less
- When the desired vacuum is reached, close
the "Lo and Hi" knob of the manifold valve
and stop the vacuum pump.
Manifold valve
Lo
Finishing the job
- With a service valve wrench, turn the valve
stem of liquid side valve counter-clockwise
to fully open the valve.
- Turn the valve stem of gas side valve
counter-clockwise to fully open the valve.
- Loosen the charge hose connected to the
gas side service port slightly to release the
pressure, then remove the hose.
- 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.
- 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.
Pressure
gauge
Hi
Open
Vacuum pump
Open
ENGLISH
Evacuation
- 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.
48 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
Electrical Wiring
General Consideration
Followings are should be considered before beginning indoor unit wiring.
- Field-supplied electrical components such as power switches, circuit breakers, wires, terminal
boxes, etc should be properly chosen with compliance with national electrical legislation or
regulation.
- Make it sure that supplied electricity is enough to operate the product including outdoor unit,
electric heater, water tank heater, etc. The capacity of fuse also selected according to the
power consumption.
- The main electricity supply should be dedicated line. Sharing main electricity supply with other
devices such as washing machine or vacuum cleaner is not permitted.
! CAUTION
• Before starting wiring job, the main electricity supply should be turned off until wiring is
completed.
• When adjusting or changing wiring, the main electricity supply should be turned off and
ground wire should be connected securely.
• Installation place should be free from the attack of wild animal. For example, mice’s wire
attacking or frog’s entering into the indoor unit may cause critical electrical accident.
• All power connections should be protected from dew condensation by thermal insulation.
• All electrical wiring should comply with national or local electrical legislation or regulation.
• The ground should be connected exactly. Do not earth the product to the copper pipe,
steel fence at the veranda, city water outlet pipe, or any other conductivity materials.
• Fix all cable using cord clamp tightly. (When cable is not fixed with cord clamp, use
additionally supplied cable ties.)
A
B
Hole A : for AC line (wire which is connected to the terminal block of the control box)
Hole B : for DC line (wire which is connected to the PCB of the control box)
PIPING AND WIRING FOR OUTDOOR UNIT 49
ENGLISH
Terminal Block Information
Symbols used below pictures are as follows :
- L, L1, L2 : Live (230 V AC)
- N : Neutral (230 V AC)
- BR : Brown , WH : White , BL : Blue , BK : Black
Terminal Block 1
water flow switching between
under floor heating and
DHW tank heating
energizing water
pump for solar
thermal system
1
2
3
4
5
6
7
8
9
10
L
L1
N
L
N
L
N
L
L1
N
WATER
PUMP
(B)
3WAY VALVE
(B)
water flow switching between
using solar thermal heating
and skipping solar
thermal heating
WATER
TANK
HEATER
3WAY VALVE
(A)
turn on or off DHW
tank heater
Terminal Block 2
opening or closing
water flow for FCU
cooling
11
12
13
14
15
16
17
18
19
20
1(L)
2(N)
3
L1
L2
N
L
N
L1
L2
THERMOSTAT
(Default : 230 V AC)
2WAY VALVE
(A)
OUTDOOR UNIT
Terminal
Block 1
Connection for thermostat
(230 V AC)
Supporting type : Heating only or
Heating/Cooling
Power supply for Indoor
unit and communication
Terminal Block 3 (1Ø Electric Heater)
Terminal Block 3 (3Ø Electric Heater)
connecting external electric
power supply for DHW tank
electric heater
1(L)
2(N)
3(L)
connecting external electric
power supply for DHW tank
electric heater
4(N)
1
TO ELB FOR
DHW TANK E/HEATER
POWER SUPPLY
(1 Ø, 220-240 V, 50 Hz)
connecting external electric
power supply for internal
electric heater
21
22
2(N)
3rd PARTY
CONTROLLER
(DC 5 V)
Connection for 3rd
Party controller
(5 V DC)
2
3
4
5
L
N
TO ELB FOR
DHW TANK
E/HEATER
R
S
T
connecting external electric
power supply for DHW tank
electric heater
Terminal Block 4 & 5
1(L)
Terminal
Terminal Terminal
Block 2 Block 4 & 5 Block 3
23
24
Mix
Pump
25
26
Mix Valve
Power supply for
2nd heating kit
27
POWER SUPPLY
(3 Ø, 380-415 V, 50 Hz)
50 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
! CAUTION
You should separate the communication wiring, in
case of communication wiring length is over 40M
L
N
Separation
Power Supply
Shield
cable
Communication Wiring
Connecting with Outdoor Unit
Terminal block
at outdoor unit
1
2 3
Electric Heater Wiring
! CAUTION
Power Cable Specification : The power cord connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4(Rubber insulated cord, type 60245 IEC 66 or
H07RN-F)
1 Phase(Ø)
3 Phase(Ø)
NORMAL
CROSS-SECTIONAL
AREA 6mm2
GN
/Y
NORMAL
CROSS-SECTIONAL
AREA 2.5mm2
GN
/Y
L
L
20
20
mm
mm
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.
External power supply (same
dedicated power supply for the
indoor unit and outdoor unit)
L
R
N
T
S
L
N
1Ø Electric Heater
3Ø Electric Heater
PIPING AND WIRING FOR INDOOR UNIT 51
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.
ENGLISH
PIPING AND WIRING FOR INDOOR UNIT
52 PIPING AND WIRING FOR INDOOR UNIT
ENGLISH
! WARNING
Installing shut-off valve
• While assembling two shut-off valves, that are found inside ‘AWHP Installation Kit
(AET69364401)’, pop sound will be heard when valve is open or close by rotating handles.
It is normal condition because the sound is due to leakage of charged nitrogen gas inside
the valve. The nitrogen gas is applied to secure quality assurance.
• Before starting water charging, these two shut-off valves should be assembled with
water inlet and outlet pipe of the indoor unit.
Water condensation on the floor
While cooling operation, it is very important to keep leaving water temperature higher than
16°C. Otherwise, dew condensation can be occurred on the floor.
If floor is in humid environment, do not set leaving water temperature below 18 °C.
Water condensation on the radiator
While cooling operation, cold water may not flow to the radiator. If cold water enters to the
radiator, dew generation on the surface of the radiator can be occurred.
Drainage treatment
While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In
this case, prepare drainage treatment (for example, vessel to contain condensed dew) to
avoid water drop.
PIPING AND WIRING FOR INDOOR UNIT 53
! CAUTION
No water-leakage permitted at the drain and fill
valve. Leakage-proof treatment which is
described in previous section should be applied.
Water Out
Water In
Step 3. Start to supply water. While supplying water, following should be kept.
- Pressure of supplying water should be 2.0 bar approximately.
- For supplying water pressure, time to be taken from 0 bar to 2.0 bar should be more
than 1 minute. Sudden water supply can yield water drain through safety valve.
- Fully open the cap of air vent to assure air purging. If air is exist inside the water circuit,
then performance degrade, noise at the water pipe, mechanical damage at the surface
of electric heater coil.
Step 4. Stop water supplying when the pressure gage located in front of the control panel
indicates 2.0 bar.
Step 5. Close drain valve and fill valve. Then wait for 20~30 seconds to observe water pressure
being stabilized.
Step 6. If following conditions are satisfactory, then go to step 7(pipe insulation). Otherwise, go
to step 3.
- Pressure gage indicates 2.0 bar. Note that sometimes pressure in decreased after step
5 due to water charging inside expansion vessel.
- No air purging sound is heard or no water drop are popping out from air vent.
Pipe Insulation
Purpose of water pipe insulation is :
- To prevent heat loss to external environment
- To prevent dew generation on the surface of the pipe in cooling operation
ENGLISH
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.
54 PIPING AND WIRING FOR INDOOR UNIT
ENGLISH
Water pump Capacity
The water pump us variable type which is capable to change flow rate, so it may be required to
change default water pump capacity in case of noise by water flow. In most case, however, it is
strongly recommended to set capacity as Maximum.
!
NOTE
• To secure enough water flow rate, do not set water pump capacity as Minimum.
It can lead unexpected flow rate error CH14.
Pressure Drop
!
NOTE
When installing the product, install additional pump in consideration of the pressure loss and
pump performance.
If flow-rate is low, overloading of product can occur.
Product pressure
drop [m]
Serviceable Head
(Plate heat
[m]
exchanger)
Capacity
Rated flow-rate
[LPM]
Pump Head [m]
(at rated flowrate)
16kW
46.0
9.5
1.4
8.1
14kW
40.0
10.0
1.1
8.9
12kW
34.0
10.7
0.8
9.9
9kW
26.0
11.3
0.4
10.9
7kW
20.0
11.6
0.3
11.3
5kW
17.0
11.8
0.2
11.6
PIPING AND WIRING FOR INDOOR UNIT 55
Indoor : Electric Heater 1Ø, Indoor : Electric Heater 3Ø
Pump model : PY-122NDDD3
Performance test based on standard ISO 9906 with pre-pressure 2.0bar and liquid temperature
20°C.
! WARNING
Selecting a water flowrate outside the curves can cause damage to or malfunction of the
unit.
ENGLISH
Performance curve
56 PIPING AND WIRING FOR INDOOR UNIT
ENGLISH
Water Quality
Water quality should be complied with EN 98/83 EC Directives.
Detailed water quality condition can be found in EN 98/83 EC Directives.
! CAUTION
• If the product is installed at existing hydraulic water loop, it is important to clean hydraulic
pipes to remove sludge and scale.
• Installing sludge strainer in the water loop is very important to prevent performance
degrade.
• Chemical treatment to prevent rust should be performed by installer.
• It is strongly recommended to install an additional filter on the heating water circuit.
Especially to remove metallic particles from the heating piping, it is advised to use a
magnetic or cyclone filter, which can remove small particles. Small particles may damage
the unit and will NOT be removed by the standard filter of the heat pump system.
Frost protection
In areas of the country where entering water temperatures drop below 0 °C, the water pipe must
be protected by using an approved antifreeze solution. Consult your AWHP unit supplier for
locally approved solutions in your area. Calculate the approximate volume of water in the system.
(Except the AWHP unit.) And add six liters to this total volume to allow for the water contained in
AWHP unit.
Antifreeze type
Antifreeze mixing ratio
0°C
-5°C
-10°C
-15°C
-20°C
-25°C
Ethylene glycol
0%
12%
20%
30%
-
-
Propylene glycol
0%
17%
25%
33%
-
-
Methanol
0%
6%
12%
16%
24%
30%
! CAUTION
• Use only one of the above antifreeze.
• If a antifreeze is used, pressure drop and capability degradation of the system can be
occurred.
• If one of antifreezes is used, corrosion can be occurred. So please add corrosion inhibitor.
• Please check the concentration of the antifreeze periodically to keep same concentration.
• When the antifreeze is used (for installation or operation), take care to ensure that
antifreeze must not be touched.
• Ensure to respect all laws and norms of your country about Anti-freeze usage.
PIPING AND WIRING FOR INDOOR UNIT 57
Inside expansion vessel is included which is 8 liter capacity with 1 bar pre-pressure. That means,
according to the volume-pressure graph, total water volume of 230 liter is supported as default. If
total water volume is changed because of installation condition, the pre-pressure should be
adjusted to secure proper operation.
- Minimum total water volume is 20 liter.
- Pre-pressure is adjusted by the total water volume. If the indoor 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 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
Case B
Case A
V ≥ 230 liter
Case A
Case C
H : difference between unit and the highest water pipe
V : total water volume of installation scene
ENGLISH
Water Volume and Expansion Vessel Pressure
58 ACCESSORIES INSTALLATION
ENGLISH
ACCESSORIES INSTALLATION
can interface to various accessories to extend its functionality and to improve user
convenience. In this chapter, specifications about supported 3rd party accessories and how to
connect to
is introduced.
It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG
Electronics, please refer to installation manual of each accessories.
Accessories supported by LG Electronics
Item
Purpose
Model
DHW Tank Install
Kit
To operate with DHW tank
PHLTA : 1Ø
PHLTC : 3Ø
Remote Air
Sensor
To control by air temperature
PQRSTA0
To receive on & off external signal
PDRYCB500
Dry Contact For Thermostat
PDRYCB300
Dry Contact
Solar Heating Kit
To operate with solar heating system PHLLA(Limit temperature : 96°C)
DHW Tank
To generate and store hot water
PHS02060310 : 200 liter, Single Heating Coil,
1Ø 230 V 50 Hz 3kW Electric Heater
PHS02060320 : 200 liter, Double Heating Coil,
1Ø 230 V 50 Hz 3kW Electric Heater
PHS03060310 : 300 liter, Single Heating Coil,
1Ø 230 V 50 Hz 3kW Electric Heater
PHS03060320 : 300 liter, Double Heating Coil,
1Ø 230 V 50 Hz 3kW Electric Heater
Drain Pan
To prevent drain water drop
PHDPB
Meter Interface
To measure production / consumption
PENKTH000
power
Central Controller
Multiple installed products into one
central control
! CAUTION
• Install the drain fan when cooling.
• If not installed, water may form.
• Please refer to separate installation manual when installing drain fan.
ACCESSORIES INSTALLATION 59
Item
Purpose
Solar Heating System
To generate auxiliary heating energy
for water tank
Thermostat
To control by air temperature
Mix Kit
To use 2nd Circuit
rd
3 Party Boiler
To use auxiliary boiler.
3way valve and actuator
To control water flow for hot water
heating or floor heating
2way valve and actuator To control water flow for Fan Coil Unit
Specification
Heating-Only type (230 V AC)
Cooling/Heating type (230 V AC with
Mode selection switch)
3 wire, SPDT (Single Pole Double Throw)
type, 230 V AC
2 wire,NO(Normal Open) or NC(Normal
Closed) type, 230 V AC
ENGLISH
Accessories supported by 3rd party Companies
60 ACCESSORIES INSTALLATION
ENGLISH
Before Installation
! WARNING
Followings should be kept before installation
• Main power must be turned off during installing 3rd party accessories.
• 3rd party accessories should be comply with supported specification.
• Proper tools should be chosen for installation.
• Never do installation with wet hands.
Thermostat
Thermostat is generally used to control the product by air temperature. When thermostat is
connected to the product, the product operation is controlled by the thermostat.
Installation condition
! CAUTION
• USE 220-240 V~ Thermostat
• 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 unit does not response quickly.
• Setting temperature range by thermostat can be different with that of the unit. The heating
or cooling set temperature should be chosen within the setting temperature range of the
unit.
• 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)
ACCESSORIES INSTALLATION 61
ENGLISH
Direct
Sun ray contact area
Direct
Sun ray contact area
yes
yes
no
no
no
no
5ft
(1.5m)
Connection cable
(less than 15m)
5ft
(1.5m)
no
no
Thermostat
Remote Air Temperature Sensor
General Information
The Heat Pump supports following thermostats.
Type
Power
Mechanical
(1)
230 V~
Electrical
(2)
230 V~
Operating Mode
Supported
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
Heating Only (3)
Yes
Heating / Cooling (4)
Yes
(1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is
not required.
(2) Electric circuit such as display, LED, buzzer, etc is included in the thermostat and electric
power supply is required.
(3) Thermostat generates "Heating ON or Heating OFF" signal according to user"s heating target
temperature.
(4) hermostat generates both "Heating ON or Heating OFF" and "Cooling ON or Cooling OFF"
signal according to user"s heating and cooling target temperature.
! CAUTION
Choosing heating / cooling thermostat
• Heating / cooling thermostat must have "Mode Selection" feature to distinguish operation
mode.
• Heating / cooling thermostat must be able to assign heating target temperature and
cooling target temperature differently.
• If above conditions are not kept, the unit can not operation properly.
• Heating / cooling thermostat must send cooling or heating signal immediately when
temperature condition is satisfied. No delay time while sending cooling or heating signal is
permitted.
62 ACCESSORIES INSTALLATION
ENGLISH
How to wire thermostat
Follow below procedures Step 1 ~ Step 5.
Step 1. Uncover front cover of the unit and open the control box.
Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3.
Step 3. If it is Heating only thermostat, go to step 4. Otherwise, if it is Heating / cooling
thermostat, go to step 5.
Step 4. Find terminal block and connect wire as below. After connecting, go to step 5.
17
L
18
N
19
L1
20
L2
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
! WARNING
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat
does not require electric power supply.
(H)
! CAUTION
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation
electric type thermostat.
Never connect external electric loads such as valves, fan
coil units, etc. If connected, Main PCB (Heater) can be
seriously damaged.
Thermostat
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(H) : Heating signal from thermostat to PCB
Step 5. Find terminal block and connect wire as below.
17
L
18
N
19
L1
20
L2
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
(C)
Thermostat
(H)
! WARNING
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat
does not require electric power supply.
! CAUTION
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation
Electric type thermostat.
Never connect external electric loads such as valves, fan
coil units, etc. If connected, Main PCB (Heater) can be
seriously damaged.
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(C) : Cooling signal from thermostat to PCB
(H) : Heating signal from thermostat to PCB
ACCESSORIES INSTALLATION 63
ENGLISH
Final check
• DIP switch setting :
Set DIP switch No. 8 to ‘ON’. Otherwise, the unit can not recognize the thermostat.
• Remote Controller :
- ‘Thermostat’ text is displayed on the remote controller.
- Button input is prohibited.
2nd Circuit
The 2nd circuit is generally used to control the temperature of 2 rooms differently. To use the
2nd Circuit, you need to prepare a separate Mix Kit. The mix kit must be installed in the main
zone.
- Main Zone : zone where the water temperature is lowest when heating.
- Add. Zone : The other zone
[Install Guide 2nd Circuit Heating]
Main Zone
Floor (35°C)
Convector
(FCU, 45 °C)
Radiator (45 °C)
Radiator (55 °C)
Floor (35°C)
○
X
X
X
Convector
(FCU, 45 °C)
○
○
○
X
Radiator (45°C)
Radiator (55 °C)
○
○
○
○
○
○
○
○
Floor (18 °C)
Radiator(18 °C)
Convector
(FCU, 5 °C)
Floor (18 °C)
○
○
X
Radiator(18 °C)
○
○
X
Convector (FCU, 5 °C)
X
X
○
Add. Zone
[Install Guide 2nd Circuit Cooling]
Main Zone
Add. Zone
h To use a floor combination during cooling operation, the flow through the floor of the flow
must be blocked by the 2 way valve.
64 ACCESSORIES INSTALLATION
ENGLISH
How to Wire 2nd Circuit
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below
23
L
24
N
MIX
PUMP
(L)
MIX
PUMP
25
L1
26
L2
27
N
(L) : Live signal from PCB to mix pump
(N) : Neutral signal from PCB to mix pump
MIXING VALVE
(L1) : Live signal (for Normal Closed type) from PCB to mixing
valve
(N) (L1) (L2) (N1)
(L2) : Live signal (for Normal Open type) from PCB to mixing
valve
(N1) Neutral signal from PCB to mixing valve
MIXING VALVE
- For detailed installation instructions, refer to the manual included in the accessories.
Meter Interface
This product can be used by connecting the meter interface module supplied in the field. The
meter interface module can communicate with the wired remote control. The meter interface
module lets you know the amount of power generated by the product
- DIP switch setting :
Set Option DIP switch No. 1 to ‘OFF’. Otherwise, the unit can not recognize the meter interface
module
- For detailed installation instructions, refer to the manual included in the accessories.
3rd Party Boiler
The product can be used by connecting an Auxiliary boiler. You can control the boiler
automatically and manually by comparing the outside temperature and the set temperature. For
more information on how to install, please read Chapter 3 (TYPICAL INSTALLATION EXAMPLE
Case 5)
21
22
1(L)
2(N)
3rd PARTY
CONTROLLER
(DC 5 V)
1(L)
2(N)
1(L) : Live signal from PCB to 3rd Party
2(N) : Neutral signal from PCB 3rd Party
3rd PARTY
CONTROLLER
(DC 5 V)
- For detailed installation instructions, refer to the manual included in the accessories.
ACCESSORIES INSTALLATION 65
The product can communicate and control through the central controller. The following functions
can be controlled in the central control linked state (Operation/Stop, Desired temperature, Hot
water operation / stop, Warm water temperature, Full lock, Etc)
How to Installation PI485
Fix the PI485 PCB as shown in below images.
For detailed installation method refer to PI485 Installation Manual
Product Heating Capacity : 12 kW, 14 kW, 16 kW
U3 Chassis
Product Heating Capacity : 5 kW, 7 kW, 9 kW
U4 Chassis
- For detailed installation instructions, refer to the manual included in the accessories.
ENGLISH
Central Controller
66 ACCESSORIES INSTALLATION
ENGLISH
DHW Tank and DHW Tank Kit/Solar Thermal Kit
To establish DHW circuit, 3way valve and DHW 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 – DHW tank – to –
Installation condition
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.
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)
Solar
Collector
(Field Supply)
Pump
(Field Supply)
Water In
Water Out
Water Tank
General Information
supports following 3way valve.
Type
SPDT
3-wire
(1)
Power
Operating Mode
Supported
230 V 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 unit to under floor water circuit.
(3) : 'Flow B' means water flow from the unit to DHW tank.
ACCESSORIES INSTALLATION 67
ENGLISH
! WARNING
Installing recirculation pump
When
is used with DHW tank, it is STRONGLY recommended to install
recirculation pump to prevent flooding out cold water at the end of hot water supply and to
stabilize the water temperature inside DHW tank
- The recirculation pump should be operated when DHW demand is not required. Therefore,
external time scheduler to determine when the recirculation pump should turn on and turn
off is required.
- The operating duration time of the recirculation pump is calculated as follow :
Duration time [minute] = k x V x R
k : 1.2 ~ 1.5 is recommended. (If distance between pump and tank is far, then choose high
number)
V : Volume of sanitary water tank [liter]
R : Water flow rate of pump [liter per minute], which is determined by pump performance
curve
- The pump operating start time should be prior to the sanitary water demand.
Hot water supply
Shower
(End of Hot
water supply)
Recirculation
Pump
Water In
DHW Tank
Water Out
Check Valve
City water
External
Time Scheduler
68 ACCESSORIES INSTALLATION
ENGLISH
How to Wire DHW Tank Heater
Step 1. Uncover heater cover of the DHW tank. It is located side of the tank.
Step 2. Find terminal block and connect wires as below. Wires are field-supplied item.
(L) : Live signal from PCB to Heater
(N) : Neutral signal from PCB to Heater
! WARNING
Wire specification
• Cross-sectional area of the wire should be 6mm2.
Adjusting thermostat temperature
- To guarantee proper operation, it is recommended to set temperature of thermostat to
maximum temperature (symbol at the picture).
- 1Ø Electric Heater Model and 3Ø Electric Heater Model are set by same method as below.
L
N
WATER
TANK
HEATER
(L)
A
(N)
ACCESSORIES INSTALLATION 69
Fellow bellow procedures Spet 1 ~ Step 6
Step 1. Find magnetic switch and ELB(MCCB) in the kit. Fit them into the indoor unit control box
with enclosed a braket and screws.(symbol Ⓐ at picture)
Step 2. Contact ‘CN_B/HEAT(A)’(white connector)of the indoor unit PCB with magnetic switch
contact using encolsed cable(symbol Ⓑ at the picture). Connect magnetic switch
contactor port no. A1 and A2.
Step 3. Connect magnetic switch contactor port no.L1 and L3 with ELB(MCCB) port no. 2 and
4(symbol Ⓒ at the picture).
! CAUTION
Check Poarity
• Connect magnetic switch contact port no. L1 to ELB(MCCB) port no.2
• Connect magnetic switch contact port no. L3 to ELB(MCCB) port no.4
Step 4. Connect magnetic switch contactor port no. T1 and T3 with terminal block 1 port 6 and
7(symbol Ⓓ at the picture).
Check Polarity
- Connect magnetic switch contact port no. T1 to terminal block 1 port 6
- Connect magnetic switch contact port no. T3 to terminal block 1 port 7
Step 5. Connect ELB(MCCB) to Terminal Block.
1Ø Electric Heater Model
→ Connect ELB(MCCB) port no.1 and 3 with terminal block 3 port 3 and 4(symbol Ⓔ at the
picture).
3Ø Electric Heater Model
→ Connect ELB(MCCB) port no.1 and 3 with terminal block 3 port 1 and 2
(symbol Ⓔ at the picture).
ENGLISH
How to install DHW tank kit
70 ACCESSORIES INSTALLATION
ENGLISH
Check Polarity
1Ø Electric Heater Model
- Connect ELB(MCCB) port no. 1 to terminal block 3 port 3
- Connect ELB(MCCB) port no. 3 to terminal block 3 port 4
3Ø Electric Heater Model
- Connect ELB(MCCB) port no. 1 to terminal block 3 port 1
- Connect ELB(MCCB) port no. 3 to terminal block 3 port 2
ʶ
ʶ
ʷ
ʸ
ʹ
ʶ
ʺ
ʷ
ʹ
ʺ
1Ø Electric Heater Model
ʶ
ʶ
ʸ
ʶ
ʶ
ʷ
ʹ
ʺ
ʷ
ʹ
ʺ
3Ø Electric Heater Model
ACCESSORIES INSTALLATION
!
3
2
4
ENGLISH
Relay contactor
port no. assignment
1
71
ELB(MCCB) port no.
assignment
NOTE
Some models are using MCCB instead of ELB
Step 6. Find DHW tank sensor. Connect it to ‘CN_TH4’ (Red Connector) of the unit PCB (symbol
Ⓐ at the picture). The sensor wire should be passed through holes for sensor (symbol Ⓑ
and Ⓒ at the picture). The sensor should be mounted correctly to the sensor hole of
DHW tank.
! CAUTION
Sensor mounting
Insert sensor into sensor socket and bolt it tightly.
• Heater Model are mounted by same method as below.
DHW tank
72 ACCESSORIES INSTALLATION
ENGLISH
How to Install Solar Thermal Kit
Step 1. Check the diameter of pre-installed pipes. (symbol Ⓐ and Ⓑ)
Step 2. If the diameter of pre-installed pipes is different from diameter of solar thermal kit, it is
necessary to reduce or extend of pipe’s diameter.
Step 3. After Step 2., connect the pipe and solar thermal kit.
Step 4. Connect solar thermal sensor to ‘CN_TH4’(Red connector) of the unit PCB.
If the DHW tank sensor is connected, disconnect the sensor from PCB first.
Solar Thermal Sensor
(less than 12 m)
3way valve
(Field Supply)
Solar
Thermal
System
Water Out (Field Supply)
Water In
Water Tank Sensor
(less than 12 m)
Pump
(Field Supply)
Water In
Water Out
Water Tank
Solar
Collector
(Field Supply)
ACCESSORIES INSTALLATION 73
LG Dry Contact is a solution for automatic control of AWHP 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
Connect the PCB by inserting the holder in the accessory box as below.
A : PDRYCB300 Model
B : PDRYCB500 Model
AB
A
B
A
B
!
A
B
NOTE
• 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)
ENGLISH
Dry Contact
74 ACCESSORIES INSTALLATION
ENGLISH
2Way Valve
2way valve is required to control water flow while cooling operation. Role of 2way valve is to cut
off water flow into under floor loop in cooling mode when fan coil unit is equipped for cooling
operation.
General Information
supports following 2way valve.
Type
Power
NO 2-wire
(1)
230 V AC
NC 2-wire
(2)
230 V AC
Operating Mode
Supported
Closing water flow
Yes
Opening water flow
Yes
Closing water flow
Yes
Opening water flow
Yes
(1) : Normal Open type. When electric power is NOT supplied, the valve is open. (When electric
power is supplied, the valve is closed.)
(2) : Normal Closed type. When electric power is NOT supplied, the valve is closed. (When
electric power is supplied, the valve is open.)
How to Wire 2Way Valve
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below.
14
L1
15
L2
16
N
2WAY VALVE
(A)
(NO)
(NC)
2way valve
(N)
! CAUTION
Dew Condensation
• Wrong wiring can yield dew condensation on the floor. If
radiator is connected at the under floor water loop, dew
condensation can be occurred on the surface of the radiator.
! WARNING
Wiring
• Normal Open type should be connected to wire (NO) and
wire (N) for valve opening in cooling mode.
• Normal closed type should be connected to wire (NC) and
wire (N) for valve closing in cooling mode.
(NO) : Live signal (for Normal Open type) from PCB to 2way valve
(NC) : Live signal (for Normal Closed type) from PCB to 2way valve
(N) : Neutral signal from PCB to 2way valve
Final Check
• Flow direction :
- Water should not flow into under floor loop in cooling mode.
- To verify the flow direction, check temperature at the water inlet of the under floor loop.
- If correctly wired, this temperatures should not be approached to 6°C in cooling mode.
ACCESSORIES INSTALLATION 75
3way valve is required to operate sanitary water tank. Role of 3way valve is flow switching
between under floor heating loop and water tank heating loop.
General Information
supports following 3way valve.
Type
SPDT
3-wire
(1)
Power
Operating Mode
220-240 V~
Selecting “Flow A” between
“Flow A” and “Flow B” (2)
Selecting “Flow B” between
“Flow A” and “Flow B” (3)
Supported
Yes
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 unit to under floor water circuit.’
(3) : Flow B means ‘water flow from the unit to sanitary water tank.’
How to wire 3way valve
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below.
3WAY VALVE
(A)
8
9
10
L
L1
N
BR
BK
BL
(W)
(U)
(N)
! WARNING
• 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
ENGLISH
3Way Valve
76 ACCESSORIES INSTALLATION
ENGLISH
Final check
• Flow direction :
- Water should flow from water outlet of the 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 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.
Air-Vent
• For correct operation of the unit, all air in the system must be exhausted by manual air-vent.
(located at pump and PHE output)
- It is easy to exhaust air during charging water into the system.
• Also, air can be exhausted by additional automatic air-vent.
(Additional air-vent must be located highest level of water pipe system.)
ACCESSORIES INSTALLATION 77
ENGLISH
Final check
No.
Check point
Description
Connection of Water
Inlet/Outlet
- Check if the shut-off valves should be assembled with
Water inlet and outlet pipe of the unit
- Check the location of the water inlet/outlet water pipe
Hydraulic pressure
- Check the pressure of supplying water by using
pressure gage inside the unit
- Pressure of Supplying water should be Under 3.0 bar
approximately
3
Water pump capacity
- To secure enough water flow rate, do not set water
pump capacity as Minimum.
- It can lead unexpected flow rate error CH14.
(Refer to Chapter 4 ‘Water Piping and Water Circuit
Connection’)
4
Transmission line and power
source wiring
- Check if Transmission line and power source wiring are
separated from each other.
- If it is not, electronic noise may occur from the power
source.
5
The power cord specifications
- Check the power cord specifications
(Refer to Chapter 4 ‘Connecting Cables’)
3Way Valve
- Water should flow from Water outlet of the unit to
sanitary tank Water inlet when sanitary tank heating is
selected.
- To verify the flow direction, Make sure that the water
outlet temperature of the unit and water inlet
temperature of sanitary Water tank are similar
2Way Valve
- Water should not flow into under floor loop in cooling
mode.
- To verify the flow direction, check temperature at the
water inlet of the under floor loop.
- If correctly wired, this temperatures should not be
approached to 6 °C in cooling mode.
Air Vent
- Air-vent must be located highest level of Water pipe
system
- It should be installed at the point which is easy to
service.
- It takes some times to remove air in the water system if
air purge is not performed sufficiently it may occur CH14
error.
(refer to Chapter 4 ‘Water Charging’)
1
2
6
7
8
78 CONFIGURATION
As
is designed to satisfy various installation environment, it is important to set up
system correctly. If not configured correctly, improper operation or degrade of performance can
be expected.
DIP Switch Setting
! CAUTION
Turn off electric power supply before setting DIP switch
• Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock.
General Information
Indoor PCB
ON
SW1
1
2
3
4
2
3
4
OFF
1 2 3 4 5 6 7 8
1 2 3 4
ON
SW2
1
5
6
7
OFF
1 2 3 4
ENGLISH
CONFIGURATION
OFF is selected
ON is selected
8
CONFIGURATION 79
ENGLISH
DIP Switch Information
Description
Setting
Role when central
controller is equipped
1
As Master
1
As Slave
2
Accessory installation
information
3
2
3
2
3
2
3
Default
1
Unit + Outdoor unit
is installed
Unit + Outdoor unit
+ DHW tank
is installed
Unit + Outdoor unit
+ DHW tank
+ Solar thermal system
is installed
2
3
DHW tank is installed
4
Heating Only
4
Heating & Cooling
5
Always
5
While water pump is on
Cycle
4
Flow Switch
Detection
5
Electric heater is not used
Selecting electric
heater capacity
6
7
6
7
1Ø model : Half capacity is used
3Ø model : 1/3 capacity is used
6
7
Unused
6
7
6
7
Full capacity is used
Thermostat installation
information
8
Thermostat is NOT installed
8
Thermostat is installed
8
80 CONFIGURATION
ENGLISH
Option Switch 1
Description
Setting
1
As Master
1
As Slave
2
Common 3rd party
2
SIEMENS
1
MODBUS
MODBUS
Function
2
Reserved
3
3
4
4
Reserved
Description
Default
Reserved
3
Reserved
4
Setting
Default
CONFIGURATION 81
NOTE
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 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 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
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.
• When the AWHP has any trouble,
(1) If there is not a function to judge possibility of operation :
Once an error occurs mainly in indoor unit, AWHP stops. On the other hand, Remocon
allows the product to activate On/ Off operation. (On : emergency operation)
- Slight / Heavy trouble : Heating Operable only
- Critical trouble : Full stop
- Treatment priority : Critical>Heavy>Slight
(2) If there is a function to judge possibility of operation :
Depending on the status of slight / heavy / critical trouble, pop-up phrase is guided
separately on display.
- Slight trouble : Heating/Cooling Operable
- Heavy trouble : Heating Operable only
- Critical trouble : Service center request
AWHP operates when user pressed OK button on pop-up window.
ENGLISH
!
82 CONFIGURATION
ENGLISH
!
NOTE
• Duplicated trouble : Option trouble with slight or heavy trouble
- If option trouble is occurred with slight (or heavy) trouble at the same time, the system
puts higher priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is
occurred.
- Therefore, sometimes DHW heating can be impossible in emergency operation mode.
When DHW is not warming up while emergency operation, please check if DHW sensor
and related wiring are all Ok.
• 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.
CONFIGURATION 83
ENGLISH
SERVICE SETTING
How to enter service setting
To enter the menu displayed at the bottom, you need to enter the service setting menu as
follows.
• In the menu screen, press [<,>(left/right)] button to select the setting category, and press [OK]
button to move to the setting list.
• In the setting list, select the service setting category, and press [OK] button to move to the
service setting list.
OK
Service setting
• You can set the product service functions.
• Some functions may not be displayed/operated in some product types.
Menu
Service contact
Model information
RMC Version Information
Open Source License
Description
Check and input the service center phone number that you can call
when there is service issue.
View product and capacity information
Check the remote controller model name and software version.
View the remote controller’s open source license.
84 SERVICE SETTING
ENGLISH
Service contact
Check and input the service center phone number that you can call when there is service issue.
• In the service setting list, select the service contact point and press [OK] button to move to the
detail screen.
• While “edit” button is selected, press [OK] button to move to the edit screen, change it, and
press [OK] button to change the service contact point.
OK
OK
SERVICE SETTING 85
Check product and capacity information to which the remote controller is connected.
• In the service setting list, select model information category, and press [OK] button to move to
the detail screen.
• The unit capacity
- 1kWh = 1kBtu * 0.29307
kWh is the result calculated based on Btu, There may be a small difference between
calculated and actual capacity.
Ex) If the unit capacity is 18kBtu, it is displayed as 5kWh.
OK
ENGLISH
Model information
86 SERVICE SETTING
ENGLISH
RMC version lnformation
View the remote controller software version.
• In the service setting list, select the RMC version information and press [OK] button to move to
the detail screen
OK
SERVICE SETTING 87
View the remote controller’s open source license.
• In the service setting list, select the open source license category, and press [OK] button to
move to the detail screen.
OK
ENGLISH
Open source license
88 SERVICE SETTING
ENGLISH
INSTALLER SETTING
How to enter installer setting
! CAUTION
The installer setting mode is the mode to set the remote controller’s detail function. If the
installer setting mode is incorrectly set, it may cause product failure, user’s injury, or property
damage. It must be set by the installation specialist with the installation license, and if it is
installed or changed without installation license, all problems caused will be the responsibility of
the installer, and may void the LG warrenty.
• In the menu screen, press [<,>(left/right)] button to select the setting category, and press
[∧(up)] button for 3 seconds to enter the password input screen for the installer setting.
• Input the password and press [OK] button to move to the installer setting list.
OK
OK
※Installer setting password
Main screen → menu → setting → service → RMC version information → SW Version
Example) SW version : 1.00.1 a
In the above case, the password is 1001.
!
NOTE
Some categories of the installer setting menu may not be available depending on the
product function or the menu name may be different.
INSTALLER SETTING 89
• You can set the product user functions.
• Some functions may not be displayed/operated in some product types.
Function
3 Minutes Delay
Select Temperature Sensor
Dry Contact Mode setting
Central Control address
Pump Test run
Description
Factory use only
Selection for setting temperature as air temperature or leaving
water temperature or air+leaving water temperature
Dry contact function is the function that can be used only when the
dry contact devices is separately purchased and installed.
When connecting the central control, set the central control
address of the unit.
Water pump test run
Air cooling set temp. setting Adjusting range of 'Setting Air Temperature' in cooling mode
Water cooling set temp.
setting
Adjusting range of 'Setting Leaving Water Temperature' in cooling
mode
Air heating set temp. setting Adjusting range of 'Setting Air Temperature' in heating mode
Water heating set temp.
setting
Adjusting range of 'Setting Heating Flow Temperature' in heating
mode
DHW Set Temp.setting
Setting DHW set temperature
Screed drying setting
Setting for using Step 1 or 2 capacity of electric
Heater on temperature
Setting outdoor air temperature where half capacity of electric
heater starts operation.
Water supply off temp.
during cooling setting
Determine leaving water temperature when the unit is turned off.
This function is used for preventing condensation on the floor in
cooling mode
Tank disinfection setting 1
Setting start/maintain time for pasteurisation
Tank disinfection setting 2
Setting pasteurisation temperature
Tank setting 1
Setting start temperature for operation
Tank setting 2
Setting maintain temperature for operation
Heater priority
Determine electric heater and water heater on and off
DHW time setting
Determine follow time duration : operation time of domestic hot
water tank heating, stop time of domestic hot water tank heating,
and delay time of DHW tank heater operating
TH on/off Variable, heating
Heating air temperature TH On / Off Type setting
air setting
TH on/off Variable, heating
Heating Water Outlet Temperature TH On / Off Type
Water setting
ENGLISH
Installer setting
90 INSTALLER SETTING
ENGLISH
Function
Description
TH on/off Variable, cooling
air setting
Cooling air temperature TH On / Off Type setting
TH on/off Variable, cooling
Water setting
Cooling Water Outlet Temperature TH On / Off Type
Pump setting in heating
Set water pump on / off delay option in heating mode
Pump setting in cooling
Set water pump on / off delay option in cooling mode
Forced operation
CN_CC setting
Pump frequency
setting(RPM)
Smart Grid(SG) setting
Water pump off After 20 consecutive hours, disable / enable the
logic that drives the water pump by itself
It is the function to set whether to install (use) Dry Contact. (It is
not a function for Dry Contact installation, but it is a function to set
the usage of the unit’s CN_CC port.)
Function to change Water Pump RPM
Select whether to use or not use the SG Mode function of the
product, set the operation option value in SG1 step.
Seasonal auto temp setting Set the operating temperature in Seasonal Auto mode
Modbus Address
CN_EXT
Anti-freezing Temperature
Add Zone
Use External Pump
It is function to set the address of the Modbus device that is
externally linked to the product. Modbus address setting function
is available from indoor unit.
Function to set external input and output control according to DI /
DO set by customer using dry contact port of indoor unit.
Determine the use of the contact port (CN_EXT) mounted on the
indoor unit PCB
This function prevents the product from freezing.
Install additional valve in product to control additional operation
area
Set up to control an external water pump
3rd Party Boiler
Configuration to control 3rd party boiler
Meter Interface
When installing the meter interface to measure energy / calorie in
the product, set unit spec for each port
Pump Prerun/Overrun
Data logging setting
Password Initialization
setting
Set to reach the optimum flow rate by circulating the heating water
with the water pump before heat exchange. After the operation
stop, additional water pump is activated to circulate the heating
water.
Display error history of connected unit
It is the function to initialize (0000) the password when you forgot
the password set in the remote controller.
INSTALLER SETTING 91
Temporarily eliminates the 3-minute delay function of the outdoor unit Comp
- Factory use only
• In the installer setting list, select 3 Minutes Delay category, and press [OK] button to move to
the detail screen.
OK
ENGLISH
3 Minutes Delay
92 INSTALLER SETTING
ENGLISH
Select Temperature Sensor
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.
• In the installer setting list, Select Temperature Sensor category, and press [OK] button to move
to the detail screen.
OK
Value
Water
!
Air
Air+Water
NOTE
Air temperature as setting temperature is ONLY available when Remote Air Sensor
Connection is enabled and Remote Air Sensor Connection is set as 02.
INSTALLER SETTING 93
Dry contact function is the function that can be used only when the dry contact devices is
separately purchased and installed.
• Change setting values using [<,>(left/right)] button.
Value
Auto
manual
!
NOTE
For dry contact mode related detail functions, refer to the individual dry contact manual.
What is dry contact?
It means the contact point signal input when the hotel card key, human body detection
sensor, etc. are interfacing with the air conditioner.
Added system functionality by using external inputs (dry contacts and wet contacts).
ENGLISH
Dry Contact Mode
94 INSTALLER SETTING
ENGLISH
Central Control Address
When connecting the central control, set the central control address of the unit.
• In the installer setting list, select Central Control Address category, and press [OK] button to
move to the detail screen.
OK
!
NOTE
Enter address code as hexadecimal value
Front: Central Control Gr. No.
Back side: Central control indoor the number
!
NOTE
This function is not available for monobloc
INSTALLER SETTING 95
The pump test run is the function to test run by operating the water pump. This function can be
used for air vents / flow sensors and others.
• In the installer setting list, Pump Test run category, and press [OK] button to move to the detail
screen.
OK
ENGLISH
Pump test run
96 INSTALLER SETTING
ENGLISH
Air cooling set temp.
Determine cooling setting temperature range when air temperature is selected as setting
temperature.
• In the installer setting list, select Air cooling set temp category, and press [OK] button to move
to the detail screen.
OK
Value
Default
Range
Max.
30
30~24
Min.
18
22~16
* Upper / lower limit / default value is in °C
!
NOTE
Only available when remote air temperature sensor is connected.
• Accessory PQRSTA0 should be installed.
• Also, Remote air sensor connection should be set properly.
INSTALLER SETTING 97
Determine cooling setting temperature range when leaving water temperature is selected as
setting temperature.
• In the installer setting list, select water cooling set temp category, and press [OK] button to
move to the detail screen.
OK
Value
Max.
Min.
Default
24
18
Range
27~22
20~5
* Upper / lower limit / default value is in °C
!
NOTE
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.
!
NOTE
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.
ENGLISH
Water cooling set temp
98 INSTALLER SETTING
ENGLISH
Air heating set temp.
Determine heating setting temperature range when air temperature is selected as setting
temperature
• In the installer setting list, select Air heating set temp. category, and press [OK] button to move
to the detail screen.
OK
Value
Default
Range
Max.
30
30~24
Min.
16
22~16
* Upper / lower limit / default value is in °C
! CAUTION
Only available when remote air temperature sensor is connected.
• Accessory PQRSTA0 should be installed.
• Also, Remote air sensor connection should be set properly.
INSTALLER SETTING 99
Determine heating setting temperature range when leaving water temperature is selected as
setting temperature
• In the installer setting list, select Water heating set temp. category, and press [OK] button to
move to the detail screen.
OK
Value
Default
Range
Max.
57
57~35
Min.
15
34~15
* Upper / lower limit / default value is in °C
!
NOTE
• When the E/heater is not used, the minimum temperature of the water temperature can be
set from 34 °C to 20 °C
ENGLISH
Water heating set temp
100 INSTALLER SETTING
ENGLISH
DHW set temp
Determine heating setting temperature range when DHW temperature is selected as setting
temperature
• In the installer setting list, select DHW set temp. category, and press [OK] button to move to
the detail screen.
OK
Value
Range
Max.
80~50
Min.
40~30
* Upper / lower limit / default value is in °C
INSTALLER SETTING 101
This function is a unique feature of AWHP that, when AWHP is installed in a new concrete
structure, controls the specific temperature floor heating out temperature for a certain period of
time to cure the floor cement.
• In the installer setting list, select Screed drying category, and press [OK] button to move to the
detail screen.
OK
How to display
Main Screen - Displays 'Screed drying' on the desired temperature display. The step in progress
at the bottom of the display is displayed.
Setting value
- Start-up step: 1 ~ 11
- Maximum temperature : 35 °C ~ 55 °C
- Step 8 Holding time : 1 days ~ 30 days
Function operation
- It is performed by the following procedure from the selected starting step.
- After all steps are completed, turn off the cement curing operation.
Step
1
2
3
4
5
6
Leaving Water
target
temperature[°C]
25
Max.T
Off
25
35
45
Duration
[hours]
72
96
72
24
24
24
7
9
10
11
Max.T Max.T
45
35
25
Holding
time
72
72
72
24
8
※ If the upper limit setting value of the heating LW temperature is 55 °C or lower, it is set to
55 °C forcibly.
If the lower limit setting value of the heating LW temperature is 25 °C or higher, it is set to
25 °C forcibly.
ENGLISH
Screed drying
102 INSTALLER SETTING
NOTE
• During Screed drying operation, button input except for installer function and temperature
display is restricted.
• When the power is applied again after a power outage during product operation, the
product operation state before power failure is remembered and the product is
automatically operated.
• Screed drying operation stops when an error occurs / When error is cleared, restart
cement Screed drying. (However, if the wired remote control is reset to the error
occurrence state, it is compensated in the unit of one day)
• Upon releasing after an error, Screed drying operation may take up to 1 minute of waiting
time after boot up. (The Screed drying operation status is judged as 1 minute cycle.)
• During Screed drying operation, installer function Screed drying operation is selectable.
• During Screed drying operation, starting operation, low noise mode off, low noise time
setting off, hot water off, solar heat off.
• During Screed drying operation, simple, sleep, on, off, weekly, holiday, heater does not
execute reservation operation.
Leaving Water target temperature °C
ENGLISH
!
Holding time
Step
Pre heating
Heating ready for tiling
INSTALLER SETTING 103
Depending on local climatic conditions, it is necessary to change the temperature condition in
which electric heater turns on / off.
• In the installer setting list, Heater on temperature category, and press [OK] button to move to
the detail screen.
OK
Split
Mono
Default
-5
-5
Range
18~-15
18~-25
* Upper / lower limit / default value is in °C
ENGLISH
Heater on temperature
104 INSTALLER SETTING
ENGLISH
!
NOTE
• Heater on temperature
Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-ON’ :
- Example : If Heater on temperature is set as ‘-1’ and DIP switch No 6. and 7 is set as
‘OFF-ON’, then half capacity of electric heater will start operation when outdoor air
temperature is below -1 °C and current leaving water temperature or room air temperature
is much belower than target leaving water temperature or target room air temperature.
Using Full capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-OFF’ :
- Example : If Heater on temperature is set as '-1' and DIP switch No 6. and 7 is set as
'OFF-OFF', then full capacity of electric heater will start operation when outdoor air
temperature is below -1 °C and current leaving water temperature or room air temperature
is much belower than target leaving water temperature or target room air temperature.
INSTALLER SETTING 105
Determine leaving water temperature when the unit is turned off. This function is used for
preventing condensation on the floor in cooling mode
• In the installer setting list, select Water supply off temp. during cooling category, and press
[OK] button to move to the detail screen.
OK
Function
cooling water
temperature
Value
Water supply off temperature
FCU Use/ not use
Default
16
use
Setting Rang
25~16
Use / Not Use
ENGLISH
Water supply off temp. during cooling
106 INSTALLER SETTING
ENGLISH
- Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed.
- FCU : determines if FCU is installed or not.
- Example : If Stop temp. is set as ‘10’ and FCU is ’Use’ and actually FCU is NOT installed in the
water loop, the unit stop operation in cooling mode when the leaving water temperature is
below 10 °C.
- Example : If Stop temp. is set as ‘10’ and FCU is ’Not use’ and actually FCU is installed in the
water loop, the Stop temp. is not used and the unit do NOT stop operation in cooling mode
when the leaving water temperature is below 10 °C.
! CAUTION
FCU Installation
• If FCU is used, related 2way valve should be installed and connected to the unit PCB.
• If FCU is set as ‘Not use’ but FCU or 2way valve is NOT installed, the unit can do abnormal
operation.
INSTALLER SETTING 107
• Disinfection operation is special DHW tank operation mode to kill and to prevent growth of
viruses inside the tank.
- Disinfection active : Selecting enable or disable of disinfection operation.
- Start date : Determining the date when the disinfection mode is running.
- Start time : Determining the time when the disinfection mode is running.
- Max temp. : Target temperature of disinfection mode.
- Duration time : Duration of disinfection mode.
Temperature profile
of Disinfection operation
Water temperature
(Inside DHW)
Max temp
Duration time
Time
Start time
OK
OK
!
NOTE
DHW heating should be enable
• If Disinfection active is set as ’ Not use’, that is ‘disable disinfection mode’, Start date and
Start time is not used.
ENGLISH
Tank disinfection setting 1, 2
108 INSTALLER SETTING
ENGLISH
Tank setting 1
• In the installer setting list, select tank setting 1 category, and press [OK] button to move to the
detail screen.
OK
Value
Range
Max outdoor temp
55~40
Min temp
30~1
INSTALLER SETTING 109
• In the installer setting list, select tank setting 2 category, and press [OK] button to move to the
detail screen.
OK
Value
Range
Hysteresis
4~2
Heating priority
Floor heating / DHW
ENGLISH
Tank setting 2
110 INSTALLER SETTING
ENGLISH
• Tank setting 1, 2
Descriptions for each parameters are as following.
- Min temp. : temperature gap from Max outdoor temp.
- Max outdoor temp. : maximum temperature generated by AWHP compressor cycle.
- Example : If Min temp. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see
the graph) will be started when the water tank temperature is below 45 °C…. If temperature is
above 48 °C…, then Session B will be started.
- Hysteresis : temperature gap from target DHW temperature. This value is required to frequent
On and Off of water tank heater.
- Heating priority : Determining heating demand priority between DHW tank heating and under
floor heating.
- Example : If user’s target temperature is set as ’70’ and Hysteresis is set as ‘3’, then the
water tank heater will be turned off when the water temperature is above 73 °C. The water
tank heater will be turned on when the water temperature is below 70 °C.
- Example : If Heating priority is set as ‘DHW’, that means heating priority is on DHW heating,
DHW is heated by AWHP compressor cycle and water heater. In this case the under floor can
not be heated while DHW heating. On the other hand, if the Heating priority is set as ‘Floor
heating’, that means heating priority is on under floor heating, DHW tank is ONLY heated by
water heater. In this case the under floor heating is not stopped while DHW is heated.
Water temperature
(Inside sanitary water tank)
Water heater off
temperature
Hysteresis
Target DHW
temperature (set by user)
Max outdoor temp.
Min temp.
Starting temperature
of DHW heating
Session A
Session C
Session B
Session D
Time
Session A : Heating by AWHP compressor cycle and water heater
Session B : Heating by water heater
Session C : No heating (Water heater is Off)
Session D : Heating by water heater
!
NOTE
DHW heating does not operate when it is disabled.
INSTALLER SETTING 111
• Heater priority : determine electric heater and DHW tank heater on and off.
• Example : If Heater priority is set as ‘Main+Boost heater ON’, then electric heater and DHW
tank heater are on and off according to control logic. If Heater priority is set as ‘Boost heater
only ON’, then electric heater is never turned on and only DHW tank heater is on and off
according to control logic.
• In the installer setting list, heater priority category, and press [OK] button to move to the detail
screen.
OK
Value
Boost heater only ON
Main+Boost heater ON
ENGLISH
Heater priority
112 INSTALLER SETTING
ENGLISH
DHW time setting
Determine following time duration : operation time of DHW tank heating, stop time of DHW tank
heating, and delay time of DHW tank heater operating.
- Active time : This time duration defines how long time DHW tank heating can be continued.
- Stop time : This time duration defines how long time DHW tank heating can be stopped. It is
also regarded as time gap between DHW tank heating cycle.
- Boost heater delay time : This time duration defines how long time DHW tank heater will not be
turned on in DHW heating operation.
- Example of timing chart :
1
DHW tank
heating is enabled 0
1
DHW tank heater
is enabled 0
S
A
S
S
DHW tank 1
heating operation 0
1
DHW tank
heater operation 0
B
B
Time
❈ 1=active / 0=not active
❈ A = Active time
❈ S = Stop time
❈ B = Boost heater delay time
OK
INSTALLER SETTING 113
It is a function to adjust the heating air temperature Thermal On / Off temperature according to
the field environment in preparation for heating or heating claim.
• You can set the following setting values using [<,>(left/right)] button.
Value
Description
TH On
TH Off
Type0
-0.5 °C
1.5 °C
Type1
-1 °C
2 °C
Type2
-2 °C
3 °C
Type3
-3 °C
4 °C
ENGLISH
TH on/off Variable, heating air
114 INSTALLER SETTING
ENGLISH
TH on/off Variable, heating water
It is a function to adjust the heating water temperature Thermal On / Off temperature according
to the field environment in preparation for heating or heating claim.
• You can set the following setting values using [<,>(left/right)] button.
Value
Description
TH On
TH Off
Type0
-2 °C
2 °C
Type1
-3 °C
3 °C
Type2
-4 °C
4 °C
Type3
-1 °C
1 °C
INSTALLER SETTING 115
It is a function to adjust the cooling air temperature Thermal On / Off temperature according to
the field environment in preparation for cooling or cooling claim.
• You can set the following setting values using [<,>(left/right)] button.
Value
Description
TH On
TH Off
Type0
0.5 °C
-0.5 °C
Type1
1 °C
-1 °C
Type2
2 °C
-2 °C
Type3
3 °C
-3 °C
ENGLISH
TH on/off Variable, cooling air
116 INSTALLER SETTING
ENGLISH
TH on/off Variable, cooling water
It is a function to adjust the cooling water temperature Thermal On / Off temperature according
to the field environment in preparation for cooling or cooling claim.
• You can set the following setting values using [<,>(left/right)] button.
Value
Description
TH On
TH Off
Type0
0.5 °C
-0.5 °C
Type1
1 °C
-1 °C
Type2
2 °C
-2 °C
Type3
3 °C
-3 °C
INSTALLER SETTING 117
• It is a function to help the water pump's mechanical life by putting the water pump's rest time
• Installer setting function to set water pump operation / delay time option in heating mode
• In the installer setting list, select Pump setting in heating category, and press [OK] button to
move to the detail screen.
OK
Type
Time setting
Operation continue
On
1 min ~ 60 min
-
Off
1 min ~ 60 min
-
ENGLISH
Pump setting in heating
118 INSTALLER SETTING
ENGLISH
Pump setting. in cooling
• It is a function to help the water pump's mechanical life by putting the water pump's rest time
• installer setting function to set water pump operation / delay time option in cooling mode
• In the installer setting list, select Pump setting in cooling category, and press [OK] button to
move to the detail screen.
OK
Type
Time setting
Operation continue
On
1 min ~ 60 min
-
Off
1 min ~ 60 min
-
INSTALLER SETTING 119
• If the product is not used for a long time, the product will be forced to operate to prevent pump
failure and PHEX freezing
• Water pump off After 20 consecutive hours, disable / enable the logic that drives the water
pump by itself
• In the installer setting list, select Forced operation category, and press [OK] button to move to
the detail screen
OK
Type
Use
Not use
Oper. Cycle
20 min ~ 180 min
-
Oper. Time
1 min ~ 10 min
-
ENGLISH
Forced operation
120 INSTALLER SETTING
ENGLISH
CN_CC
It is the function to set the usage of the unit’s CN_CC port.
• Change setting values using [<,>(left/right)] button
Value
Description
D/C Automatic
When power is applied to the product, the unit when the contact point
is on in Dry Contact installed state recognizes Dry Contact installation
D/C Not Installed
D/C Installed
!
Do not use (install) Dry Contact
Use (install) Dry Contact
NOTE
CN_CC is the device connected to the unit to recognize and control the external contact
point.
INSTALLER SETTING 121
It is a function to enable installer to control pump RPM of BLDC pump application model.
• In the installer setting list, select Pump frequency setting(RPM) category, and press [OK] button
to move to the detail screen.
OK
Value
Description
0 (Default)
500~3700 : RPM
Change unit : 10
ENGLISH
Pump frequency setting (RPM)
122 INSTALLER SETTING
ENGLISH
Smart Grid(SG)
It is the function to enable / disable the SG Ready function and to set the reference value at SG2
step.
• In the installer setting list, select Smart Grid(SG) category, and press [OK] button to move to
the detail screen.
OK
Value
Mode
Not use (Default)
Step 0
Use
Step 1
Step 2
INSTALLER SETTING 123
It is the function to set the operation reference value in Seasonal Auto mode.
• In the installer setting list, select Seasonal auto temp category, and press [OK] button to move
to the detail screen.
OK
Function
Description
Outdoor1,Heat
Heating lower ambient temp
(Out1)
Outdoor2,Heat
Heating higher ambient temp
(Out2)
Outdoor3,Cool
Cooling lower ambient temp
(Out3)
Setting maintain temperature
Tank setting 2
for operation
Water1,Heat
Heating higher water temp
(LW1)
DHW time
setting
Determine follow time
duration : operation time of
domestic hot water tank
heating, stop time of domestic
hot water tank heating, and
delay time of DHW tank heater
operating
Water3,Cool
(LW3)
Cooling higher water temp
Water4,Cool
(LW4)
Cooling lower water temp
Range
Default
Boundary
-10°C
Out1 ← Out2-1
-25~35 °C
16°C
30°C
10~46°C
Use heater :
LW STD : 15~65°C
EW STD : 15~55°C
Not use heater :
LW STD : 20~65°C
EW STD : 20~55°C
Use FCU & 5°C IDU :
LW STD : 5~27°C
EW STD : 10~27°C
Use FCU & 6°C IDU :
LW STD : 6~27°C
EW STD : 11~27°C
Not use FCU :
LW STD : 16~27°C
EW STD : 20~27°C
Out2 → Out1 +1
Out2 ← Out3 -5
Out3 → Out2 +5
Out3 ← Out4 -1
40°C
Out4 → Out3 +1
35°C
LW1 ← LW2
28°C
LW1 ← LW2
20°C
LW3 ← LW4
16°C
LW3 ← LW4
- Setting range: Celsius
- Seasonal Auto Driving mode: Heating, Heating & Cooling, Air-conditioning
* If heating mode is selected, heating & cooling or cooling can not be selected.
- Depending on the air / outflow control selection value, the water / air related setting value is
displayed on the screen.
ENGLISH
Seasonal auto temp
124 INSTALLER SETTING
ENGLISH
In this mode, setting temperature will follow outdoor temperature automatically. This mode adds
the cooling season function to the conventional weather dependent operation mode.
Auto-Adjustable
Target Temp.
Room Air
Temp.(°C)
Leaving
Water Temp.
Outdoor
Air Temp.
Set point 1
30~20
57~39
Set point 5
-20 ~ -10
Set point 2
19~16
38~20
Set point 6
-5 ~ 5
Set point 3
30~24
25~17
Set point 7
10 ~ 18
Set point 4
23~18
16~6
Set point 8
22 ~ 30
Heating
Cooling
Auto-Adjustable
Target Temperature
Heating
Cooling
Set point 1
Temperature profile
o weather dependent operation
of
Set point 2
Set point 3
Set point 4
Set point 5
Set point 6
Set point 7
Set point 8
Outdoor
air temperature
INSTALLER SETTING 125
It is function to set the address of the Modbus device that is externally linked to the product.
Modbus address setting function is available from indoor unit.
• In the installer setting list, select Modbus Address , and press [OK] button to move to the detail
screen.
OK
!
NOTE
To use this function, switch No.1 of option switch 1 must be turned ON.
ENGLISH
Modbus Address
126 INSTALLER SETTING
ENGLISH
CN_EXT
It is a function to control external input and output according to DI type set by customer using
CN-EXT Port.
• In the installer setting list, select CN-EXT Port category, and press [OK] button to move to the
detail screen.
OK
Value
Not use
Simple Operation
Simple Dry Contact
Single emergency stop
INSTALLER SETTING 127
Function to set whether or not to use a installed 2nd circuit function using mixing kit.
You can set valve closing time[sec] and hysteresis temperature[°C] on screen by yourself.
Activating this function, It allows 2 zones(Room1, Room2) temperature to be controlled,
separately.
- In case of heating, the temperature of Room1 can not be set higher than Room2 temperature.
- In case of cooling, the temperature of Room1 can not be set lower than Room2 temperature.
Setting range
- Add Zone (2nd Circuit function setting) : Use / Not Use
- Value Closing Time : 60 ~ 999 sec (Default: 240)
- Hysteresis (Thermal On / Off ) : 1 ~ 5 °C (Default: 2)
ENGLISH
Add Zone
128 INSTALLER SETTING
ENGLISH
Use External Pump
This function can be set to control the external water pump.
• In the installer setting list, select Use External Pump category, and press [OK] button to move
to the detail screen.
Value
Not use
Use
INSTALLER SETTING 129
This function is to configure the 3rd party boiler to be controlled.
If the status of this function is “Use”, you can choose control mode of boiler, Auto or Manual.
If the mode of this function is set to “Manual”, you can set temperature of the boiler and
hysteresis, respectively.
External boiler ON condition :
- If outdoor temperature ≤ external boiler operation temperature value (installer setting), turn off
the indoor unit and operate the external boiler.
External boiler OFF condition :
- If External air temperature ≥ external boiler operation temperature value (installer setting) +
Hysteresis (installer setting), turn off external boiler operation and operate indoor unit
ENGLISH
3rd Party Boiler
130 INSTALLER SETTING
ENGLISH
Meter Interface
It is the function that can check the status of energy and power on screen. It collects and
calculates power or calorie data to create data for energy monitoring and energy warning alarm
pop-ups. This function can be activated in installer mode.
OK
There are 2 options, modbus address and unit, in this function. Activating the modbus address
option, you choose one address(B0 or B1) or don’t use. Then, you set the port and specification
in range of 0000.0~9999.9[pulse/kW] as shown in the figure below.
INSTALLER SETTING 131
Pump Prerun operates to ensure sufficient flow before the compressor is operated. This is a
function that allows heat exchange to work smoothly.
Pump Overrun is a function to prevent water pump failure and to help mechanical life. If the
water pump has been off for 20 hours, Water pump will operate for the set time
OK
ENGLISH
Pump Prerun/Overrun
132 INSTALLER SETTING
ENGLISH
Data logging
It is the function to set the operation reference value in Seasonal Auto mode.
• In the installer setting list, select Data logging category, and press [OK] button to move to the
detail screen.
OK
!
NOTE
Error history lookup range: 50
Error history information
Item: date, time, mode (including Off), set temperature, incoming temperature, outgoing
temperature, room temperature, Hot water operation / stop, Hot water set
temperature, Hot water temperature, Outdoor unit On / Off, Error code
Number of Display: Within 50
- Save criteria ν
ν Error occurred, released
ON / OFF of outdoor unit operation
INSTALLER SETTING 133
It is the function to initialize (0000) when you forgot the password set in the remote controller.
• In the installer setting list, select the password initialization setting category, and press [OK]
button to move to the detail screen.
• When you press “initialization” button, a popup screen appears, and when you press “check”
button, password initialization starts, and the user password is changed to 0000.
OK
ENGLISH
Password Initialization
134 INSTALLER SETTING
ENGLISH
Power Supply Blockage (SG Ready)
The heat pump operated automatically by the power supply status signals from power supply
companies. This function can respond to European countries’ special tariff for heat pump using
on a smart grid.
Power Supply Status
Operating Mode
0:0 [Normal Operation]
The heat pump works at maximum
efficiency.
4 modes
depending on
power supply status
1:0 [Switch-off command, Utility lock]
Deactivates the heat pump to avoid
peak load. The maximum blocking time
depends on the system’s thermal
storage capacity, but amounts to at
least 2 hours 3 times a day. (No frost
protection)
0:1 [Switch-on recommendation]
The switch-on recommendation and
set value storage tank temperature is
increased, depending on the parameter
"Mode SG"
Mode SG : set temperature + α
depending on the below
parameter
Step 0 (DHW +5°C)
Step 1 (H/P+2°C, DHW +5°C)
Step 2 (H/P+5°C, DHW +7°C)
1:1[Switch-on command]
The command activates the
compressor. Optionally, electrical
booster heaters can be activated to
utilize electricity surpluses
INSTALLER SETTING 135
ENGLISH
Overview settings
Menu Structure
Menu
Sub function
Service contact
.......................................................84
Model information
.......................................................85
RMC version lnformation
.......................................................86
Open source license
.......................................................87
3 Minutes Delay
.......................................................91
Select Temperature Sensor
.......................................................92
Installer
Dry Contact Mode
.......................................................93
Central Control Address
.......................................................94
Pump Test run
.......................................................95
Air cooling set temp.
.......................................................96
Water cooling set temp
.......................................................97
Air heating set temp.
.......................................................98
Water heating set temp
.......................................................99
DHW set temp
.....................................................100
Screed drying
.....................................................101
Heater on temperature
.....................................................103
Water supply off temp. during cooling .....................................................105
Tank disinfection setting 1, 2
.....................................................107
Tank setting 1
.....................................................108
Tank setting 2
.....................................................109
Heater priority
.....................................................111
DHW time setting
.....................................................112
TH on/off Variable, heating air
.....................................................113
TH on/off Variable, heating water .....................................................114
136 INSTALLER SETTING
ENGLISH
TH on/off Variable, cooling air
.....................................................115
TH on/off Variable, cooling water .....................................................116
Pump setting in heating
.....................................................117
Pump setting. in cooling
.....................................................118
Forced operation
.....................................................119
CN_CC
.....................................................120
Pump frequency setting (RPM)
.....................................................121
Smart Grid(SG)
.....................................................122
Seasonal auto temp
.....................................................123
Modbus Address
.....................................................125
CN_EXT
.....................................................126
Add Zone
.....................................................127
Use External Pump
.....................................................128
3rd Party Boiler
.....................................................129
Meter Interface
.....................................................130
Pump Prerun/Overrun
.....................................................131
Data logging
.....................................................132
Password Initialization
.....................................................133
COMMISSIONING 137
If everything is going well until now, it is time to start the operation and to take advantages of
.
Before starting operation, pre-check points are described in this chapter. Some comments about
maintenance and how to do troubleshooting are presented.
Check List before Starting Operation
! CAUTION
Turn off the power before changing wiring or handling product
No
Category
Item
Check Point
Field wiring
• All switches having contacts for different poles should be wired
tightly according to regional or national legislation.
• Only qualified person can proceed wiring.
• Wiring and local-supplied electric parts should be complied with
European and regional regulations.
• Wiring should be following the wiring diagram supplied with the
product.
2
Protective devices
• Install ELB (earth leakage breaker) with 30mA.
• ELB inside the control box of the 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.
Power supply
• Use dedicated power line.
1
Electricity
4
• Connections on the terminal block (inside the control box of the
unit) should be tightened.
5
Terminal block wiring
6
Charged water pressure
• After water charging, the pressure gage (in front of the 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.
7
Water
Shut-off valve
• Two shut-off valves (located at the end of water inlet pipe and
water outlet pipe of the unit) should be open.
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.
8
9
10
11
12
13
Product Installation
Hang to the wall
• As the unit is hung on the wall, vibration or noise can be heard if
the unit is not fixed tightly.
• If the unit is not fixed tightly, it can fall down during operation.
Parts inspection
• There should be no apparently damaged parts inside the unit.
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 unit. In this case, prepare drainage treatment (for
example, vessel to contain condensed dew) to avoid water drop.
ENGLISH
COMMISSIONING
138 COMMISSIONING
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.
! CAUTION
Turn off the power before proceeding maintenance
No
Category
Item
1
Water pressure
2
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.
3
4
Electricity
Check Point
• In normal state, the pressure gage (in front of the unit) should
indicate 2.0~2.5 bar.
• If the pressure is less than 0.3 bar, please recharge the water.
Starting Operation
Check before Starting Operation
1
Check to see whether there is any refrigerant leakage, and check whether the power or
transmission cable is connected properly.
Confirm that 500 V megger shows 2.0 MΩ or more between power supply terminal
block and ground. Do not operate in the case of 2.0 MΩ or less.
NOTE: Never carry out mega ohm check over terminal control board.
Otherwise the control board may break.
2
Immediately after mounting the unit or after leaving it turned off for an extended
length of time, the resistance of the insulation between the power supply
terminal board and the ground may decrease to approx. 2.0 MΩ as a result of
refrigerant accumulation in the internal compressor.
If the insulation resistance is less than 2.0 MΩ, turn on the main power supply.
3
When the power is applied for the first time, operate the product after preheating for
2 hours. To protect the unit by increasing the oil temperature of the compressor.
COMMISSIONING 139
START
No
Operate the unit in heating mode.
Does Test operation start?
Check whether the power cable and
communication cable are completely connected
Yes
Is cold water discharged for
more than 3 minutes ?
Yes
* Check the load (In/Out Temp.)
* Check pipe length and amount of
refrigerant
* Check for abnormal sound in
outdoor unit (comp.,Fan, others )
No
Is there any temperature
difference between intake and
discharged water?
No
* Refer to Troubleshooting Guide
Yes
No
Is hot water discharged ?
Yes
Normal
Airborne Noise Emission
The A-weighted sound pressure emitted by this product is below 70 dB.
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe working levels.
Whilst there is a correlation between the emission and exposure levels, this cannot be used
reliably to determine whether or not further precautions are required.
Factor that influence the actual level of exposure of the workforce include the characteristics of
the work room and the other sources of noise, i.e. the number of equipment and other adjacent
processes and the length of time for which an operator exposed to the noise.
Also, the permissible exposure level can vary from country to country.
This information, however, will enable the user of the equipment to make a better evaluation of
the hazard and risk.
Limiting concentration
Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration
shall be described in the unit of kg/m3 (Freon gas weight per unit air volume) for facilitating
calculation
Limiting concentration : 0.44 kg/m3(R410A)
n Calculate refrigerant concentration
Refrigerant concentration =
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where indoor unit is installed (m3)
ENGLISH
Starting Operation flow chart
140 COMMISSIONING
ENGLISH
Troubleshooting
If
operates not properly or it does not start operation, please check following list.
! CAUTION
Turn off the power before proceeding troubleshooting
Troubleshooting for Problem while Operation
No
Problem
Reason
Solution
• Set target temperature correctly.
• Setting target temperature • Check if temperature is water-based or air-based. See
is not proper.
"Remote sensor active' and 'Temp. sensor selection' in
Chapter6.
1
Heating or
Cooling is not
satisfactory.
• Charged water is not
enough.
• Water flow rate is low.
• Water inlet temperature is
too high.
2
3
4
5
Although
electric power
supply is OK
(remote
controller
displays
• Water inlet temperature is
information), the too low.
unit does not
start working.
Water pump
noise.
Water is flood
out through
drain hose.
• Check pressure gage and charge more water until pressure
gage is indication 2~2.5 Bar
• Check if strainer gathers too much partices. If so, strainer
should be cleaned.
• Check if pressure gage indicates above 4 Bar
• Check if water pipe is getting closed due to stacked paticles
or lime.
• If water inlet temperature is above 57 °C, the unit does not
operated for the sake of system protection
• If water inlet temperature is below 5 °C in cooling operation,
the unit does not operated for the sake of system protection.
Wait while unit warms up the water inlet temperature.
• If water inlet temperature is below 15 °C in heating operation,
the unit does not operated for the sake of system protection.
Wait while unit warms up to 18 °C the water inlet
temperature.
• If you are not using the back up heater accessory
(HA**1M E1), increase the water temperature with the
external heat source (heater, boiler).
If the problem persists, contact your dealer.
• If you want to use the screed drying function, be sure to
purchase and install back up hater accessories (HA**1M E1).
• Air purging is not
completely finished.
• Open the cap of air purge and charge more water until
pressure gage is indicating 2~2.5 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 expanstion tank and pressure gage operates well.
• Too much water is
charged.
• Flood out water by opening the switch of the safety valve
until pressure gage is indicating 2~2.5 Bar.
• Expantion tank is
damaged.
• Replace the expantion tank
• Thermal protector of water • Open the side panel of the DHW tank and push the reset
button of the thermal protector. (for more detail information,
tank heater is actived.
please refer to intallation manual of DHW tank.
DHW is not hot.
Select DHW Heating Operation and identify if icon is displayed
• DHW Heating is disabled. • on
the remote conrtoller.
COMMISSIONING 141
ENGLISH
Troubleshooting for Error Code
Code No.
Description
Cause
Normal Condition
• Incorrect connection between
sensor and PCB(Heater).
• PCB(Heater) fault
• Sensor fault
• Resistance: 10 kΩ at 25 centigrade
(unplugged) → for Remote room
air sensor
• Resistance: 5 kΩ at 25 centigrade
(unplugged) → for all sensors
EXCEPT remote room air sensor
• Voltage: 2.5 V DC at 25 centigrade
(plugged) (for all sensors)
• Refer resistance-temperature table
to check in different temperature
BLDC Water pump Lock
Restriction of BLDC Water pump
• BLDC Water pump defect /
assembly condition abnormal
• Fan lock by foreign material
Bad communication between remote
controller and unit.
• Incorrect connection between
sensor and PCB(Heater)
• PCB(Heater) fault
• Sensor fault
• Wire connection between remote
controller and Main PCB
assembly(Heater) should be tight
• Output voltage of PCB should be
12 V DC
Bad communication between Main PCB
assembly(Heater) and Main PCB
assembly(Inverter) of the unit.
• The connector for transmission is
disconnected
• The connecting wires are
misconnected
• Wire connection between remote
• The communication line is broken
control panel and Main PCB
• Main PCB assembly(Inverter) is
assembly(Heater) should be tight.
abnormal
• Main PCB assembly(Heater) is
abnormal
PCB program (EEPROM) fault
• Electrical or mechanical damage a
• This error can not be permitted
the EEPROM
14
Problem in flow switch
• Flow switch is open while internal • Flow switch should be closed
water pump is working
while internal water pump is
• Flow switch is closed while
working or DIP switch No. 5 of
internal water pump is not working Main PCB assembly(Heater) is set
• Flow switch is open while DIP
as on
switch No. 5 of Main PCB
• Flow switch should be open while
assembly(Heater) is set as on
internal water pump is not working
15
Water pipe overheated
• Abnormal operation of electric
heater
• Leaving water temperature is
above 57 °C
• If there is no problem in electric
heater control, possible maximum
leaving water temperature is 57 °C
Thermal fuse is damaged
• Thermal fuse is cut off by
abnormal overheating of internal
electric heater
• Mechanical fault at thermal fuse
• Wire is damaged
• This error will not be happened if
temperature of electric heater tank
is below 80 °C
1
Problem in remote room air sensor
2
Problem in refrigerant (inlet side) sensor
6
Problem in refrigerant (outlet side) sensor
8
Problem in water tank sensor
16
Problems in sensors
17
Problem in water-inlet sensor
18
Problem in water-outlet sensor
19
Problem in water-interim sensor
10
3
5
53
9
20
142 COMMISSIONING
ENGLISH
Display
code
Title
Cause of error
Check point & Normal condition
21
DC PEAK
(IPM Fault)
• Instant over current
• Over Rated current
• Poor insulation of IPM
• An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
• Over load condition
- Overcharging of refrigerant Pipe length.
Outdoor Fan is stop
• Poor insulation of compressor
22
Max. C/T
Input Over Current
1. Malfunction of Compressor
2. Blocking of Pipe
3. Low Voltage Input
4. Refrigerant, Pipe length, Blocked...
23
DC Link High / Low
Volt
• Check CN_(L), CN_(N) Connection
• DC Link Voltage is above 420 V DC
• Check Input Voltage
• DC Link Voltage is below 140 V DC
• Check PCB DC Link voltage sensor parts
26
DC Compressor
Position
• Compressor Starting fail error
• Check the connection of comp wire “U,V,W”
• Malfunction of compressor
• Check the component of “IPM”, detection parts.
AC Input Instant
over Current Error
PCB(Inverter) input current is over
100A(peak) for 2us
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge)
2. Compressor damage (Insulation damage/Motor
damage)
3. Input voltage abnormal (L,N)
4. Power line assemble condition abnormal
5. PCB assembly 1 Damage (input current sensing part)
29
Inverter compressor
over current
1. Overload operation (Pipe clogging/Covering/EEV
(HM**1M U*3) Inverter Compressor
defect/Ref. overcharge)
input current is 30A.
2. Compressor damage(Insulation damage/Motor damage)
(HM**3M U*3) Inverter Compressor
3. Input voltage low
input current is 24A.
4. ODU PCB assembly 1 damage
32
High temperature in
Discharge pipe of
the inverter
compressor
• Overload operation (Outdoor fan
constraint, screened, blocked)
• Refrigerant leakage (insufficient)
• Poor INV Comp Discharge sensor
• LEV connector displaced / poor
LEV assembly
• Check outdoor fan constraint/ screened/ flow structure
• Check refrigerant leakage
• Check if the sensor is normal
• Check the status of EEV assembly
27
35
Low Presser Error
Excessive decrease of low pressure
• Defective low pressure sensor
• Defective unit fan
• Refrigerant shortage/leakage
• Deformation because of damage of refrigerant pipe
• Defective unit EEV
• Covering / clogging (unit covering during the cooling
mode / unit filter clogging during heating mode)
• SVC valve clogging
• Defective unit PCB(Inverter)
• Defective unit pipe sensor
41
D-pipe sensor
(Inverter)
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
COMMISSIONING 143
Title
43
Sensor error of high
pressure
Abnormal value of sensor
(Open/Short)
• Bad connection of connector PCB(Inverter)
• Bad connection high pressure connector
• Defect of high pressure connector (Open/Short)
• Defect of connector PCB(Inverter) (Open/Short)
• Defect of PCB(Inverter)
44
Air sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
45
Condenser Mid pipe
sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
46
Suction Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
48
Condenser Out-pipe
sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
52
PCB Communication
Error
Checking the communication state
between Main PCB and Inverter
PCB
• Generation of noise source interfering with
communication
54
Open and Reverse
Phase Error
Prevention of phase unbalance and
prevention of reverse rotation of
constant-rate compressor
Main power wiring fault
60
PCB(Inverter) &
Main EEPROM
check sum error
EEPROM Access error and Check
SUM error
1. EEPROM contact defect/wrong insertion
2. Different EEPROM Version
3. ODU Inverter & Main PCB assembly 1 damage
High temperature
in Cond. Pipe
• Overload operation (Outdoor fan
constraint, screened, blocked)
• Unit heat exchanger contaminated
• EEV connector displaced / poor
EEV assembly
• Poor Cond. Pipe sensor assembly /
burned
• Check outdoor fan constraint / screened / flow structure
• Check if refrigerant overcharged
• Check the status of EEV assembly
• Check the status of sensor assembly / burn
Heatsink sensor detected high
temp.(85 °C)
1. Part no. : EBR37798101~09
- Check the heatsink sensor: 10k °C / at
25 °C(Unplugged)
- Check the outdoor fan is driving rightly
2. Part no. : EBR37798112~21
- Check the soldered condition in the 22,23 pin of IPM,
PFCM
- Check the screw torque of IPM, PFCM
- Check the spreadable condition of thermal grease on
IPM, PFCM
- Check the outdoor fan is driving rightly
61
62
Heat sink Temp,
High error
Cause of error
Check point & Normal condition
ENGLISH
Display
code
144 COMMISSIONING
ENGLISH
Display
code
73
Title
Cause of error
(HM**1M U*3) PCB(Inverter) input
power current is over 48A(Peak) for
AC input instant over
2ms.
current error
(HM**3M U*3) PCB(Inverter) input
(Matter of software)
power current is over 27A(Peak) for
2ms.
Check point & Normal condition
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref.overcharge)
2. Compressor damage (Insulation damage/Motor
damage)
3. Input voltage abnormal
4. Power line assemble condition abnormal
5. PCB assembly 1 damage (input current sensing part)
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service
Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu,
Changwon-si, Gyeongsangnam-do, KOREA
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