LG | HN1610H.NK3 | Installation guide | LG HN1610H.NK3 INSTALLATIEHANDLEIDING

LG HN1610H.NK3 INSTALLATIEHANDLEIDING
ENGLISH
FRANÇAIS
ΕΛΛΗΝΙΚΆ
INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
Please read this installation manual completely before installing the
product. Installation work must be performed in accordance with the
national wiring standards by authorized personnel only. Please retain
this installation manual for future reference after reading it thoroughly.
Original instruction
MFL67212828
Rev.00_051519
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
2
TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
5
PREFACE
6
IMPORTANT SAFETY INSTRUCTIONS
12 INSTALLATION PART
13 GENERAL INFORMATION
13
15
16
19
20
23
24
Model Information
Model name and related information
Parts and Dimensions
Control Parts
Control Panel
Typical Installation Example
Cycle Diagram
25 INSTALLATION
25
26
28
32
33
33
Transporting the Unit
Selection of the best location
Installation Space
Collective / Continuous Installation for roof top use
Installation at Seaside
Seasonal wind and cautions in winter
35 INSTALLATION OF INDOOR UNIT
35
38
Electrical Wiring
Drill a Hole in the Wall
38 PIPING AND WIRING FOR OUTDOOR UNIT
38
39
40
40
43
44
46
Refrigerant Piping
Preparation for Piping
Connecting Pipe to Indoor Unit
Connecting Pipe to Outdoor Unit
Finalizing
Leakage test and Evacuation
Electrical Wiring
49 PIPING AND WIRING FOR INDOOR UNIT
49
53
53
54
Water Piping and Water Circuit Connection
Water pump Capacity
Water Quality
Frost protection
TABLE OF CONTENTS
57
57
60
61
62
63
65
66
68
69
70
71
Before Installation
Thermostat
3rd Party Controller
Central Controller
DHW Tank
Dry Contact
External Controller - Setting up programmable digital input operation
Remote Temperature Sensor
External pump
Wi-fi Modem
Smart Grid
3Way Valve(A)
72 CONFIGURATION
72
DIP Switch Setting
78 SERVICE SETTING
78
78
79
80
81
82
How to enter service setting
Service setting
Service contact
Model information
RMC version lnformation
Open source license
83 INSTALLER SETTING
83
84
86
87
88
89
90
91
92
93
94
95
96
98
99
100
101
How to enter installer setting
Installer setting
3 Minutes Delay
Select Temperature Sensor
Dry Contact Mode
Central Control Address
Pump test run
Air heating set temp.
Water heating set temp
DHW set temp
Tank disinfection setting 1, 2
Tank setting 1
Tank setting 2
DHW time setting
TH on/off Variable, heating air
TH on/off Variable, heating water
Heating temp. setting
ENGLISH
55 ACCESSORIES INSTALLATION
3
4
ENGLISH
102
103
104
105
106
107
108
109
110
111
112
113
TABLE OF CONTENTS
Pump setting in heating
Forced operation
CN_CC
Smart Grid(SG)
IDU Address Verification
CN_EXT
Use External Pump
Pump Prerun/Overrun
Data logging
Password Initialization
Power Supply Blockage (SG Ready)
Overview settings
115 COMMISSIONING
115
116
117
117
117
118
Check List before Starting Operation
Starting Operation
Starting Operation flow chart
Airborne Noise Emission
Limiting concentration(R410A)
Troubleshooting
PREFACE
5
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 ten 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.
ENGLISH
PREFACE
6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
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.
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Always install a dedicated circuit 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 cause product damage.
• Do not touch leaked refrigerant directly.
- There is risk of frostbite.
• 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.
7
8
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
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 unplug the power supply plug during operation.
- There is risk of fire or electric shock.
• Do not touch (operate) the unit with wet hands.
- There is risk of fire or electric shock.
• Do not place a heater or other appliances near the power
cable.
- There is risk of fire or electric shock.
• Do not allow water to run into electric parts.
- There is risk of fire, failure of the unit, or electric shock.
• Do not store or use flammable gas or combustibles near the
unit.
- There is risk of fire or failure of unit.
• Do not use the unit in a tightly closed space for a long time.
- It may cause damage to the unit.
• When flammable gas leaks, turn off the gas and open a
window for ventilation before turning the unit on.
- There is risk of explosion or fire.
• If strange sounds, or 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.
IMPORTANT SAFETY INSTRUCTIONS
9
ENGLISH
- 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.
• 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.
• 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.
10 IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
! CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or
repair of unit.
- Low refrigerant levels may cause failure of unit.
• Keep level even when installing the unit.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the unit.
- Avoid personal injury.
Operation
• Do not use the unit for special purposes, such as preserving
foods, works of art, etc.
- There is risk of damage or loss of property.
• Use a soft cloth to clean. Do not use harsh detergents,
solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic
parts of the unit.
• Do not step on or put anything on the unit.
- There is risk of personal injury and failure of unit.
• Use a firm stool or ladder when cleaning or maintaining the
unit.
- Be careful and avoid personal injury.
• Do not turn on the circuit 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
IMPORTANT SAFETY INSTRUCTIONS
11
ENGLISH
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.
Item
Image
Quantity
1
Installation Manual
Remote Controller
/ Cable
1
OK
Sensor Holder
1
Water Tank
Temperature Sensor
1
Strainer
1
Screw
4
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
Factory Model Name
A
H
U
W
1
6
6
T
3
Serial Number
Function
T : High temperature
Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
Heating Capacity (kW)
16 : 16 kW
Model Type
W : DC Inverter Heat Pump
Classification
U : Outdoor Unit
Air-to-Water-Heat Pump
A
H
N
W
1
6
6
T
3
Serial Number
Function
T : High temperature
Heater Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
Heating Capacity (kW)
16 : 16 kW
Model Type
W : Inverter Heat Pump
Classification
N : Indoor Unit
Air-to-Water-Heat Pump
- Additional Information : serial number is refer to the barcode on the product.
- Max allowable pressure High side : 4.2 MPa / Low side : 2.4 MPa
- Refrigerant : R410A, R134a
ENGLISH
GENERAL INFORMATION
14 GENERAL INFORMATION
ENGLISH
Buyer Model Name
H
U
16
1
H
A
U
3
3
Serial number
Platform (Chassis code)
3 : U3 Chassis
Classification
U : Outdoor Unit
Refrigerant
A : R410A
High Temperature
Electrical ratings
1 : 1Ø, 220-240 V~ 50 Hz
Heating Capacity (kW)
16 : 16 kW
Classification
U : Outdoor Unit
H : Air to Water Heat Pump
H
N
16
1
0
H
N
K
3
Serial number
Platform (Chassis code)
K : K3 Chassis
Classification
N : Indoor Unit
High Temperature
Heater Capacity (kW)
0 : None
Heater Electrical ratings
1 : 1Ø, 220-240 V~ 50 Hz
Heating Capacity (kW)
16 : 16 kW
Classification
N : Indoor Unit
H : Air to Water Heat Pump
- Additional Information : serial number is refer to the barcode on the product.
- Max allowable pressure High side : 4.2 MPa / Low side : 2.4 MPa
- Refrigerant : R410A, R134a
GENERAL INFORMATION 15
ENGLISH
Model name and related information
Type
Air-to water Heat Pump (For High Temperature)
Model
Unit
Power Supply
Ø, V, Hz
1, 220-240, 50
kW*1
16
kcal/h
13,760
Capacity
Heating
Indoor
Btu/h
Net Weight
Outdoor
54,600
kg(lbs)
84(185)
R134a
R410A
Amount
kg(lbs)
1.8(3.9)
3.8(8.3)
Sound Power Level(PWL)
dB(A)
63
63
Maximum Running Current
A
20.2
18.9
Refrigerant
Type
89(196)
*1 : tested under EN14511
(water temperature 30 °C ’ 35 °C at outdoor ambient temperature 7 °C / 6 °C)
• All appliances were tested at atmospheric pressure.
16 GENERAL INFORMATION
ENGLISH
Parts and Dimensions
Indoor unit : External
(unit : mm)
GENERAL INFORMATION
17
ENGLISH
Indoor unit : Internal
(unit : mm)
5
4
3
1
7
6
2
Description
No
Name
Remark
1
Leaving Water Pipe
Male PT 1 inch
2
Entering Water Pipe
Male PT 1 inch
3
Refrigerant Pipe
Ø 9.52 mm
4
Refrigerant Pipe
Ø 15.88 mm
5
Control Box
PCB and terminal blocks
6
Flow Switch
Minimum operation range at 15 LPM.
7
Plate Heat Exchanger
Heat exchange between refrigerant and water
18 GENERAL INFORMATION
4-holes for anchor bolts
Product Heating Capacity :
16 kW
U3 Chassis
330
360
390
(unit : mm)
490
1 356
Supporter
1 380
ENGLISH
Outdoor unit : External
165
620
950
Description
No
Name
1
Liquid-side Service Valve
2
Gas-side Service Valve
3
Air discharge Grill
165
390
GENERAL INFORMATION 19
ENGLISH
Control Parts
Control Box : Indoor Unit
2
1
Description
No
Name
Remark
1
Terminal blocks
The terminal blocks allow easy connection of field wiring
2
Main PCB
The main PCB(Printed Circuit Board) controls the functioning
of the unit
20 GENERAL INFORMATION
ENGLISH
Control Panel
Operation display
window
Back button
OK
On/Off button
OK button
Up/Down/Left/Right
button
Operation display window
Operation and Settings status display
Back button
When you move to the previous stage from the menu’s setting stage
Up/down/left/right button
When you change the menu’s setting value
OK button
When you save the menu’s setting value
On/Off button
When you turn ON/OFF the AWHP
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.
GENERAL INFORMATION 21
ENGLISH
Wiring Diagram
Indoor Unit
22 GENERAL INFORMATION
ENGLISH
Wiring Diagram
Outdoor Unit
GENERAL INFORMATION 23
Some installation scenes are presented for example. As these scenes are conceptual figures,
installer should optimize the installation scene according to the installation conditions.
Floor Heating only
Fan coil unit
Floor heating loop
Radiator
Floor Heating + Hot water
Fan coil unit
Hot water
Floor heating loop
Radiator
Sanitary
water
tank
Cold water supply
Hot water only
Pump
3way valve
Bypass valve
Hot water
Cold water supply
Sanitary
water
tank
ENGLISH
Typical Installation Example
24 GENERAL INFORMATION
Indoor Unit
Water side
Indoor Unit
R134a side
R410A side
Ref, Out
Ref, In
Charging
port
ENGLISH
Cycle Diagram
Outdoor
Unit
Ref, Out
Ref, In
Male
PT 1
Sanitary
tank
Water. Out
Ref, In
Water out
Temperature
sensor
Or
Floor
Heating
Flow Switch
Water. In
Male
PT 1
Electronic
Expansion
Valve
Low
Pressure
Sensor
Strainer
s
Ref, Out
Water in
Temperature
sensor
High
Pressure
Sensor
Suction
Temperature
sensor
Discharge
Temperature
sensor
Inverter
Compressor
: Heating
Outdoor Unit
Accumulator
INSTALLATION 25
ENGLISH
INSTALLATION
Transporting the Unit
• When carrying the suspended unit, pass the ropes between legs of base panel under the unit.
• Always lift the unit with ropes attached at four points so that impact is not applied to the unit.
• Attach the ropes to the unit at an angle Ⓐ of 40° or less.
• Use only accessories and parts which are of the designated specification when installing.
Indoor Unit
Sub line
40º or less
Line supporter
Outdoor Unit
Air outlet grille
Intake hole
Corner
Sub line
Handle
Always hold the unit by the corners, as holding
it by the side intake holes on the casing may
cause them to deform.
A 40° or less
26 INSTALLATION
ENGLISH
!
CAUTION
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than 20 kg.
• PP bands are used to pack some products. Do not use them as a mean for transportation
because they are dangerous.
• Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut on
your hands.
• Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise
plastic packaging bag may suffocate children to death.
• When carrying in Unit, be sure to support it at four points. Carrying in and lifting with
3-point support may make Outdoor Unit unstable, resulting in a fall.
• Use 2 belts of at least 8 m long.
• Place extra cloth or boards in the locations where the casing comes in contact with the
sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
Selection of the best location
Indoor
Select space for installing Indoor Unit, which will meet the following conditions:
- The place where the unit shall be installed inside.
- The place shall easily bear a load exceeding four times of the unit weight.
- The place where the unit shall be leveled.
- The place shall allow easy water drainage.
- The place where the unit shall be connected to the outdoor unit.
- The place where the unit is not affected by an electrical noise.
- The place where there should not be any heat source or steam near the unit.
Outdoor
Select space for installing outdoor unit, which will meet the following conditions:
- No direct thermal radiation from other heat sources
- No possibility of annoying neighbors by noise from unit
- No exposition to strong wind
- With strength which bears weight of unit
- Note that drain flows out of unit when heating
- With space for air passage and service work shown next
- Because of the possibility of fire, do not install unit to the space where generation, inflow,
stagnation, and leakage of combustible gas is expected.
- Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
- Do not use unit under any special environment where oil, steam and sulfuric gas exist.
- It is recommended to fence round the outdoor unit in order to prevent any person or animal
from accessing the outdoor unit.
- If installation site is area of heavy snowfall, then the following directions should be observed.
- Make the foundation as high as possible.
- Fit a snow protection hood.
INSTALLATION 27
When installing the outdoor unit in a place that is constantly exposed to a strong wind like
a coast or on a high story of a building, secure a normal fan operation by using a duct or a
wind shield.
- Install the unit so that its discharge port faces to the wall of the building.
Keep a distance 500 mm or more between the unit and the wall surface.
- Supposing the wind direction during the operation season of the air conditioner, install the unit
so that the discharge port is set at right angle to the wind direction.
Strong
wind
Strong
wind
Blown
air
500
Air inlet grille
ENGLISH
Select installation location considering following conditions to avoid bad condition when
additionally performing defrost operation.
- Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of installing
the product at a place with a high humidity in winter (near beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.
- Performance of heating will be reduced and preheat time of the indoor unit may be lengthened
in case of installing the outdoor unit in winter at following location:
- Shade position with a narrow space
- Location with much moisture in neighboring floor.
- Location with much humidity around.
- Location where ventilation is good.
It is recommended to install the outdoor unit at a place with a lot of sunshine as possible as.
- Location where water gathers since the floor is not even.
28 INSTALLATION
Indoor Unit
- The following values are the least space for installation. If any service area is needed for service
according to field circumstance, obtain enough service space.
- The unit of values is mm.
520
(Unit: mm)
400
100
300
Piping space
(front side)
330
Service space
(front side)
1080
Service space
(left side)
600
H-Beam supporter
100
1080
space
100 100
(Unit: mm)
200
ENGLISH
Installation Space
Outdoor Unit
- The following values are the least space for installation.
If any service area is needed for service according to field circumstance, obtain enough service
space.
- The unit of values is mm.
INSTALLATION 29
ENGLISH
In case of obstacles on the suction side
Stand alone installation
r le
ss
5
o
00
r le
ss
1000 or
more
5
o
00
r
0o
10more
10
mo 0 or
re
1000 or
more
r
0o
1 0 ore
m
10
mo 0 o r
re
15
mo0 or
re
r
0o
1 0 ore
m
r
0o
15 ore
m
15
mo0 or
re
[Unit:mm]
Collective installation
10
0
mo 0 o r
re
10
mo 0 o r
re
10
0
mo 0 o r
re
20
mo 0 o r
re
r
0o
3 0 ore
m
10
mo 0 o r
re
0o
r le
20
mo 0 or
re
ss
1000 or
more
50
r
0o
30 ore
m
[Unit:mm]
30 INSTALLATION
Stand alone installation
or
les
s
1000 or
more
0
50
0o
rm
ore
50
0o
rm
ore
50
Collective installation
10
mo 0 o r
re
0o
10
mo 0 o r
re
10
0
r
0o
mo
re
10
o
00
r le
ss
1000 or more
50
rm
ore
[Unit:mm]
In case of obstacles on the suction and the discharge side
Ú Obstacle height of discharge side is higher than the unit
Stand alone installation
s
les
more
L>H
H
L>H
or
1000 or
0
50
H
L
L
ENGLISH
In case of obstacles on the discharge side
r
0o e
5 0 mor
r
0o
10 ore
m
or
00
10 ore
m
r
0o
25 ore
m
[Unit:mm]
INSTALLATION 31
r le
ss
L>H
0o
rm
10
ore
or
00
10 more
0o
r
0o
3 0 ore
m
rm
H
10
L
L
H
L>H
0o
1000 or
more
50
ENGLISH
Collective installation
ore
50
12
or
r
0o
30 ore
m
re
mo
[Unit:mm]
Ú Obstacle height of discharge side is lower than the unit
Stand alone installation
s
H
L≤H
L
L
H
L≤H
les
or
1000 or
more
0
50
r
0o
10 ore
r
m
0o
50 ore
m
or
00
10 ore
m
r
0o
30 ore
m
Collective installation
L≤H
s
H
les
L
L
H
L≤H
or
1000 or
more
0
50
10
0o
10
rm
ore
r
0o
30
r more
o
0
1 5 0 ore
m
0o
rm
ore
r
0o
r 30 ore
o
m
00
15 more
[Unit:mm]
32 INSTALLATION
Space required for collective installation and continuous installation: When installing several units,
leave space between each block as shown below considering passage for air and people.
One row of stand alone installation
r
0o
200 ore
m
r
0o
100more
or
1 0 0 ore
m
or
2 0 0 ore
m
[Unit:mm]
Rows of collective installation (2 or more)
- L should be smaller than H
L≤H
L
10
mo 0 o r
re
r
0o
300more
H
ENGLISH
Collective / Continuous Installation for roof top use
r
0o
1 5 0 ore
m
or
300ore
m
or
6 0 0 ore
m
[Unit:mm]
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 50cm than the average snowfall
(annual average snowfall) if it is installed at the area with much snowfall.
1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed
the width of the product. (If width of the frame is wider than that of the product, snow may
accumulate)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
INSTALLATION 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.
- If you can’t meet above guide line in the seaside installation, please contact your supplier for the
additional anticorrosion treatment.
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
Indoor Unit
- Fix the unit tightly with bolts as shown below so that the unit will not fall down due to
earthquake.
- Noise and vibration may occur from the floor or wall since vibration is transferred through the
installation part depending on installation status. Thus, use anti-vibration materials (cushion pad)
fully (The base pad shall be more than 200 mm.
Anti-vibration material
Concrete
3 or more screw
base
Nut
threads of the
Support
2 bolts must be Spring washer
shown
Flat washer
Anchor bolt
392
75
354
(Unit: mm)
Outdoor Unit
- Check the strength and level of the installation ground so that the unit will not cause any
operating vibration or noise after installation.
- Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts,
nuts and washers each which are available on the market.)
- It is best to screw in the foundation bolts until their length are 20mm from the foundation
surface.
Anti-vibration
materials
Concrete
base
Spring washer
Frame
Nut
Four bolt are
required
3 thread ridges
200
200
75
75
H-Beam
100
ENGLISH
Foundation for Installation
[Unit:mm]
Foundation bolt executing method
INSTALLATION OF INDOOR UNIT 35
ENGLISH
INSTALLATION OF INDOOR UNIT
Electrical Wiring
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.
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.)
The connecting cable connected to the
outdoor unit should be complied with
IEC 60245 or HD 22.4 S4 (This equipment
shall be provided with a cord set complying
with the national regulation.)
NORMAL CROSS-SECTIONAL AREA
1 Phase(Ø)
Phase Capacity
GN
/Y
L
1Ø
20
m
m
16 kW
NORMAL
CROSS-SECTIONAL
AREA 0.75 mm2
Area (mm2)
Indoor unit : 4
Outdoor unit : 6
GN
/Y
L
20
mm
When the connection line between the
indoor unit and outdooor unit is over 40 m,
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 hazard.
36 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.
- For wiring, use the designated power wire and connect firmly, then secure to prevent outside
pressure being exerted on the terminal block.
- Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small
head will strip the head and make proper tightening impossible.
- Over-tightening the terminal screws may break them.
!
WARNING
Make sure that the screws of the terminal are free from looseness.
INSTALLATION OF INDOOR UNIT 37
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.
Phase
Capacity
Minimum Ssc Value
1Ø
16 kW
3 142
- 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
≤ 75 A.
- European/International Technical Standard setting the limits for harmonic currents produced by
equipment connected to public low-voltage systems with input current ≤16 A of > 75 A per
phase.
Circuit Breaker Specification
Perform the electrical wiring work according to
the electrical wiring connection.
- All wiring must comply with local requirements.
- Select a power source that is capable of
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.
Phase (Ø)
Capacity
Maximum Running
Current
1
16 kW
Indoor unit : 20.2 A
Outdoor unit : 18.9 A
Indoor
Unit
CB
Power Source
Communication
CB
ELCB
Switch Box
Outdoor Unit
ENGLISH
Point for attention regarding quality of the public electric power supply
38 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
Phase (Ø)
Capacity
1
16 kW
Pipe Size (mm)
(Diameter : Ø)
Gas
Liquid
15.88
9.52
Indoor unit
B
!
Length A (m)
Standard
7.5
Max.
50
Elevation B (m)
Standard
0
Max.
30
*Additional
Refrigerant (g/m)
40
Outdoor unit
A trap is not necessary
when the outdoor unit is
installed in a higher position
A than the indoor unit.
A
Outdoor unit
B
Indoor unit
CAUTION
1 Standard pipe length is 7.5 m If the pipe length is longer than 7.5 m, additional charge of
the refrigerant is required according to the table.
• Example : If 16 kW model is installed at a distance of 50 m, 1 700 g of refrigerant should
be added according to following formula : (50-7.5) x 40 g = 1 700 g
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)
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 Ø 65 mm hole core drill.
Piping hole should be slightly slant to the outdoor side to prevent
raindrop into indoor side.
Wall
Indoor
Outdoor
5~7 mm
ENGLISH
PIPING AND WIRING FOR OUTDOOR UNIT
PIPING AND WIRING FOR OUTDOOR UNIT 39
- 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 1.5 m 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 (mm)
Pipe diameter
(mm)
Wing nut type Clutch type
Bar
"A"
Copper pipe
<Clutch type>
Ø 6.35
Ø 9.52
Ø 12.7
1.1~1.8
0~0.5
Ø 15.88
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
40 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
6.35
9.52
12.7
15.88
19.05
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
Forward
Sideways
Knock-out
Base pan
PIPING AND WIRING FOR OUTDOOR UNIT 41
Outside diameter
mm
6.35
9.52
12.7
15.88
19.05
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.
Continuous
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Torque wrench
Outdoor unit
Step 3. Preventing entering of foreign objects
- 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)
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 1.6 mm2 to secure
safety. The earth cable is connected
to the terminal block where earth
symbol
is marked.
Control Terminal
(Terminal for
Connecting Cable)
Main Power
Terminal
(Terminal for
Power Cable)
Cable Clamp
(or Cord Clamp)
Cable Clamp
(or Cord Clamp)
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.
42 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
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.
!
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.
• Install 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 43
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 sealant.
sealer.
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 sealant.
sealer.
Trap
Trap
44 PIPING AND WIRING FOR OUTDOOR UNIT
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.
Nitrogen gas
cylinder
Gas pipe
To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder
must be higher than its bottom when you pressurize the system. Usually, the cylinder is
used in a vertical standing position.
• 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
• 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.
Liquide pipe
ENGLISH
Leakage test and Evacuation
PIPING AND WIRING FOR OUTDOOR UNIT 45
Required time for evacuation when 0.11 m3/h
vacuum pump is used
If tubing length is less than 10 m
30 min. or more
If tubing length is longer than 10 m
60 min. or more
0.1 kPa or less
- When the desired vacuum is reached, close the "Lo and Hi" knob of the manifold valve and stop
the vacuum pump.
Gas pipe
Liquid pipe
Vacuum pump
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.
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.
46 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.)
PIPING AND WIRING FOR OUTDOOR UNIT 47
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
1(L)
2(N)
POWER
Power supply for
Indoor unit
Earth
Terminal Block 2
Connection for thermostat
(230 V AC)
1
2
L
N
3
4
5
6
7
8
9
10
L
L1
N
L
N
L1
L2
3WAY VALVE
(A)
PUMP
(A)
Connection for
Main Pump
THERMOSTAT
(Default : 230 V AC)
Water flow switching between
under floor heating and
DHW tank heating.
Terminal Block 3
3(A)
4(B)
3rd PARTY
CONTROLLER
Terminal
Block 1
Terminal
Block 2
Terminal
Block 3
Terminal
Block 4
Connection for 3rd
Party controller
Terminal Block 4
3(A)
4(B)
COMM.
Connection for Indoor
unit communication
!
CAUTION
You should separate the communication wiring, in
case of communication wiring length is over 40 M.
L
N
Separation
Power Supply
Shield
cable
Communication Wiring
48 PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
How to connect wirings
Communication cable
Power cable
Terminal block
of indoor unit
Power cable
Earth
Terminal block
of indoor unit
3(A) 4(B)
Terminal block of outdoor unit
ODU. B ODU. A IDU. B IDU. A CEN. B CEN. A DRY1
Communication cable
DRY2
GND
12V
PIPING AND WIRING FOR INDOOR UNIT 49
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
!
CAUTION
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.
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
50 PIPING AND WIRING FOR INDOOR UNIT
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.
!
CAUTION
No water-leakage permitted at the drain and fill valve. Leakage-proof treatment which is
described in previous section should be applied.
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 gauge 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 gauge 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
Water cycle
* For the water pipe system, use the closed loop type.
1. For the parts of the water pipe system, use the parts above the design water pressure.
2. For the water pipe, do not use steel pipe.
3. To replace the connected device easily, install the union joint (2).
4. Install the service port (3) to clean the heat exchanger at each inlet and outlet of the water
pipe.
5. Always install a strainer (4) at the inlet of the water pipe.
- For the strainer, use one with 28 mesh or above with measurement diameter of 0.4mm or
less. (Exclude other net)
- Always install the strainer on the horizontal pipe.
(When dirt, trash, rusted pieces get into the water pipe system, it can cause problems to the
product by corroding the metallic material.)
PIPING AND WIRING FOR INDOOR UNIT 51
On-site installation (1)
Air vent (5)
Union joint (2)
Pressure gauge(7)
Thermometer (6)
Shut-off valve (9)
Excessive pressure
safety valve(10)
Outlet Water
[Install water tank]
or
[Install floor heating]
Inlet water
Drain valve(8)
P/T Service port(3)
Strainer(4)
Circulating
Pump
12. There is a drain hole at the bottom of prevent risk of electric shock caused by leakage of
water.
* Water tank & floor heating installation
1. Use the pump (1) with sufficient capacity to assure loss of overall water pressure and to
supply water to the Indoor Unit.
2. Install the shut-off valve (2) on both sides of the pump to clean and repair the pump.
3. Install the flexible joint (3) to prevent noise and vibration transferred from the pump.
4. Install the pressure gauge (4) to monitor the water pressure from water tank. (Option)
5. Install the expansion tank (5) to accommodate the water contracted or expanded from the
temperature difference and to supply the water.
6. After the installation of water pipe system is completed, open the water supply valve (6) and
supply the water.
7. When installing the water tank, insert the water tank temperature sensor (7) to measure the
temperature of the water inside the tank.
- For the water tank temperature sensor, use the sensor supplied on the product.
- When heating the floor, measure the temperature by using the remote controller or remote
temperature sensor (Separately sold).
8. Use the water tank (9) with the heat exchange coil (8) installed so that the heat can be
exchanged sufficiently inside the tank.
ENGLISH
6. Install the air vent (5) at the top of the water pipe.
7. Install a thermometer (6) and pressure gauge (7) at the inlet and outlet of the water pipe.
8. Install the drain valve (8) that can be used for draining the water inside when replacing the part
or providing service.
9. Install the shut-off valve (9) to block the water by closing the valve when replacing the part or
cleaning.
10. Apply insulated treatment on the exterior of the water pipe so that water drops do not form.
11. Install excessive pressure safety valve (10) that meets the design water pressure to prevent
unit or water pipe damage at the pressure increase inside the water pipe system.
52 PIPING AND WIRING FOR INDOOR UNIT
ENGLISH
Installation of water tank
water tank
temperature sensor (7)
shut-off valve (2)
Pump (1)
Flexible joint (3)
Heat
exchange
coil (8)
Expansion tank (5)
water tank (9)
(Indirect heating type)
Water supply valve (6)
Pressure gauge (4)
Installation of floor heating
shut-off valve (2)
Pump (1)
Flexible joint (3)
Expansion tank (5)
Floor heating coil
(Radiator, FCU can be used)
Water supply valve (6)
Pressure gauge (4)
Strainer
- Use the 28 mesh strainer.
(Exclude scale diameter of 0.4 mm or less and other net)
- Check the strainer direction and assemble on the inlet hole (Refer to picture)
- Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for
assembly.
- Install the service port facing downward. (Within left/right 45 degrees)
- Check if there is any leakage on the connecting part.
- Clean the strainer periodically. (Once a year or more frequent)
Water In
45°
Front
Strainer
Side
PIPING AND WIRING FOR INDOOR UNIT 53
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.
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.
• Water quality check should be implemented before completing the installation of system.
Detailed guide can be found in the table as below.
Water contents
pH
Conductivity
TDS (Total dissolved solids)
Alkalinity (HCO3-)
Total hardness
Iron (Fe)
Sulphate (SO42-)
Nitrite (NO3-)
Free chlorine (Cl2)
ppm
pH7
-
Chlorides (Cl )
pH9
Value
7.5~9.0
10~500 uS/cm
8~400 ppm
60~300 (mg/L)
4 ~ 8.5 °dH
71.4 ~ 151.7 (mg/L)
≤ 0.2 (mg/L)
≤ 100 (mg/L)
≤ 100 (mg/L)
≤ 1 (mg/L)
STS316
15 °C
3 000
40 °C
500
60 °C
200
80 °C
125
15 °C
18 000
40 °C
2 600
60 °C
1 000
80 °C
550
STS304
180
50
30
20
700
250
170
130
ENGLISH
Water pump Capacity
54 PIPING AND WIRING FOR INDOOR UNIT
ENGLISH
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 %
If you use frost protection function, change DIP switch setting and input the temperature
condition in Installation mode of remote controller. Refer to page 109 and 161.
!
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.
ACCESSORIES INSTALLATION 55
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
Remote Air
Sensor
Dry Contact
DHW Tank
(Single Heating
Coil)
DHW Tank
(Double Heating
Coil)
Purpose
Model
To control by air temperature
PQRSTA0
To receive on & off external signal
PDRYCB000
Dry Contact For Thermostat
PDRYCB300
To generate and store hot water
OSHW-200F : 200L
OSHW-300F : 300L
OSHW-500F : 500L
OSHW-300FD : 300L
Thermistor for
DHW Tank
To control hot water temperature of
DHW tank
Meter Interface
To measure production / consumption
PENKTH000
power
Central Controller
Multiple installed products into one
central control
Wi-Fi Modem
To enable remote system operation
from smartphone
PWFMDD200
Wi-Fi Extension
cable
To connect Wi-Fi Modem with
Indoor PCB for communication
PWYREW000
Extension wire
To connect remote controller with
Indoor PCB for communication
PZCWRC1
PHRSTA0
56 ACCESSORIES INSTALLATION
ENGLISH
Accessories supported by 3rd party Companies
Item
Purpose
Thermostat
To control by air temperature
3rd Party Controller
To connect external controller using
modbus protocol
Specification
Heating-Only type (230 V AC)
Cooling/Heating type (230 V AC with
Mode selection switch)
(A) : To control water flow for hot
water heating or floor heating / To
control water flow when installing 3 wire, SPDT (Single Pole Double Throw)
3way valve and actuator
3rd party boiler
type, 230 V AC
(B) : To control close/open mode of
solar circuit
External Pump
To retain sufficient capacity using
additional pump
Smart Grid
To control operation mode depending
on input signal from provider
ACCESSORIES INSTALLATION 57
!
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)
ENGLISH
Before Installation
58 ACCESSORIES INSTALLATION
ENGLISH
Direct
Sun ray contact area
yes
no
no
5 ft
(1.5 m)
no
Thermostat
General Information
The Heat Pump supports following thermostats.
Type
Power
Operating Mode
Supported
Mechanical
(1)
230 V~
Heating Only (3)
Yes
Electrical
(2)
230 V~
Heating Only (3)
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.
ACCESSORIES INSTALLATION 59
Follow below procedures Step 1 ~ Step 4.
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.
Step 4. Find terminal block and connect wire as below.
7
L
8
N
9
L1
!
10
L2
Mechanical type thermostat.
Do not connect wire (N) as mechanical type thermostat
does not require electric power supply.
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
(H)
!
Thermostat
WARNING
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
(H) : Heating signal from thermostat to PCB
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.
ENGLISH
How to wire thermostat
60 ACCESSORIES INSTALLATION
ENGLISH
3rd Party Controller
The product can also be linked to 3rd party controller. You can connect external controllers using
Modbus protocol except for LG controller. If 3rd party controller is used, LG controller is not
applied to AWHP simultaneously.
How to install 3rd party controller
Follow below procedures step 1 ~ step 4.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish control box(Indoor) of
the unit.
Step 3. Check if the harness(White) is inserted fully to the indoor unit
PCB (CN_COM).
Step 4. Connect the 3rd party controller to terminal block 2(11/12)
completely. (including Meter interface module)
3(A)
4(B)
3rd PARTY
CONTROLLER
(DC 5 V)
3(A)
4(B)
3rd PARTY
CONTROOLER
CN_COM
Indoor PCB
ACCESSORIES INSTALLATION 61
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
ENGLISH
Central Controller
62 ACCESSORIES INSTALLATION
ENGLISH
DHW Tank
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.
Water Tank Sensor
(Less than 12 m)
Water In
Water Out
Water Tank
General Information
supports following 3way valve.
Type
Power
Operating Mode
Supported
SPDT
3-wire
(1)
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 63
Dry Contact is a solution for automatic control of HVAC system at the owner's best. In simple
words, it's a switch which can be used to turn the unit On/Off after getting the signal from
external sources.
How to install dry contact
[Parts of Dry contact]
Dry Contact body
Cable(for connecting with IDU)
Follow below procedures step 1 ~ step 4.
CN_CC CN_CC
Step 1. Check if the power of the unit is turned off.
IndoorIndoor
PCB PCB
Step 2. Disassemble front panels and distinguish terminal block in Indoor PCB.
Step 3. Connect cable to the unit PCB(CN_CC) fully.
Step 4. Then, Insert harness to the dry contact PCB(CN_INDOOR) firmly as shown below.
CN_CC
Dry contact
Indoor PCB
CN_INDOOR
!
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
64 ACCESSORIES INSTALLATION
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Themal
Operation
COMM
FAN
HEAT
COOL
LOW
MIDDLE
HIGH
• For input contact closure only(No power input)
COMM
ENGLISH
[Setting of Contact Signal Input]
Thermostat
LG does not
supply this section
(Field supply)
Notes
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
• For input contact voltage : DC 12 V, 24 V~
Connect separate
External voltage of
DC 12 V, 24 V~
Thermostat
LG does not
supply this section
(Field supply)
ACCESSORIES INSTALLATION 65
If you require to operate control depending on external digital input(ON/OFF), connect cable to
indoor PCB(CN_EXT).
Follow below procedures step 1 ~ step 4.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish control box(Indoor) of the unit
Step 3. Connect the external controller to PCB(CN_EXT) completely.
Step 4. Connect the cable and field installation part.
Indoor PCB
CN_EXT
Adapter Cable
Installation example #1
• SW : Single pole switch
- Select a part with contacts for extremely low
amperage
- DC 5 V ~ 12 V is used at the contact point
- Switch load is approximately 0.5 ~ 1 mA
Indoor Unit
0.5 m
Max 10 m
CN_EXT
PCB
SW
Supplied Part
• Control cable
- Cable size : 22 to 26 AWG
- Don’t extend the cable more than 10 meters
Field Installation Part
Installation example #2
Indoor Unit
CN_EXT
PCB
0.5 m
Max 10 m
Relay Circuit
X
Supplied Part
X
SW
• X : Relay(a point of contact, fixed DC 0.5 ~ 1 mA)
• SW : Distance ON/OFF switch
• Control cable(Indoor unit to Relay Circuit)
- Cable size : 22 to 26 AWG
- Don’t extend the cable more than 10 meters
Power
supply
of relay
Field Installation Part
Determining the purpose of CN_EXT
Setting value: 0 ~ 5 step Indoor CN-EXT port setting
- 0: default
- 1: Simple operation on / off
- 2: Dry contact (simple contact)
- 3: Emergency stop only for indoor unit
- 4: Reattachment / absence
- 5: Emergency stop of all indoor units (It can be set only when indoor unit has emergency stop
function)
ENGLISH
External Controller - Setting up programmable digital input
operation
66 ACCESSORIES INSTALLATION
ENGLISH
Remote Temperature Sensor
Remote temperature sensor can be installed any place a user wants to detect the temperature.
• The function is not available for some products.
Installation condition
Role and constraint while installation of remote air temperature sensor is very similar to that of
thermostat.
• Distance between the unit and the remote air temperature sensor should be less than 15 m
due to length of the connection cable of remote air temperature sensor.
• For other constraints, please refer to previous page where constraints about thermostat is
described.
Direct
Sun ray contact area
Direct
Sun ray contact area
yes
yes
no
no
no
5 ft
(1.5 m)
Connection cable
(less than 15 m)
5 ft
(1.5 m)
no
no
no
Thermostat
Remote Air Temperature Sensor
How to Install Remote Temperature Sensor
[Parts of Remote Temperature Sensor]
Sensor
Screw(to fix remote sensor)
Follow below procedures step 1 ~ step 5.
Step 1. Decide where the remote temperature sensor is Installed. Then, Determine the location
and height of the fixing screws in fig. 1 (Interval between the screws : 60 mm)
Step 2. Check if the power of the unit is turned off.
Step 3. Disassemble front panels and distinguish control box(Indoor) of the unit.
Step 4. Insert temperature sensor into PCB(CN_ROOM) and fix the sensor firmly in fig. 2.
Step 5. The Connection wire does not matter if you change the color of the wire because of
nonpolar.
ACCESSORIES INSTALLATION 67Indoor PCB
ENGLISH
Fixing screws
60 mm
BK
WH
CN_ROOM
Indoor PCB
Sensor
[fig. 1]
[fig. 2]
Step 6. Integrate the remote temperature sensor with the screws
as the order of arrows.
Fixing the
Remote Sensor
1
2
!
CAUTION
• Choose the place where the average temperature can be measured for the unit operates.
• Avoid direct sunlight.
• Choose the place where the cooling/heating devices do not affect the remote sensor.
• Choose the place where the outlet of the cooling fan do not affect the remote sensor.
• Choose the place where the remote sensor isn't affected when door is open.
!
NOTE
• For more information about installing Remote Temperature Sensor, Please refer installation
manual provided with Remote Temperature Sensor.
• For system set-up, please read chapter 8.(Especially function code No.3)
CN_ROOM
68 ACCESSORIES INSTALLATION
ENGLISH
External pump
External pump can be required when the room to take floor heating is too large or not wellinsulated.(potential free) Also, External pump is installed with buffer tank to retain sufficient
capacity.
How to install external pump
Follow below procedures step 1 ~ step 3.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish terminal block in Indoor PCB.
Step 3. Connect signal cable to terminal block (TB_EXT_PUMP) fully.
Indoor PCB
TB_EXT_PUMP
External pump
(Voltage free)
ACCESSORIES INSTALLATION 69
Wi-fi modem enables remote system operation from smartphone. Available functions include
selection of on/off, operation mode, DHW heating, temperature setup and weekly scheduling
etc.
How to install Wi-fi Modem
[Parts of Wi-fi modem]
Wi-fi modem body
USB Cable
Extension Cable
Follow below procedures step 1 ~ step 5.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish control box(Indoor) of the unit.
Step 3. Connect the USB cable to the indoor unit PCB (CN_WF ; Blue) until it clicks into place.
Step 4. Connect the Wi-Fi modem to the USB cable fully.
Step 5. Refer to the image below to install the Wi-Fi modem in the marked position.
CN_WF
CN_WFCN_WF CN_WF
Indoor
PCB
Indoor
Indoor
PCB
Indoor
PCB PCB
USB Cable
ENGLISH
Wi-fi Modem
70 ACCESSORIES INSTALLATION
ENGLISH
Smart Grid
This product provides SG Ready function for users. It enables to stop internal operation(Heating
/ DHW) and control target temperature depending on input signal from power provider.
How to install smart grid
Follow below procedures step 1 ~ step 3.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish terminal block in Indoor PCB.
Step 3. Connect signal cable to terminal block in PCB (TB_SG2, TB_SG1) fully as shown below.
Indoor PCB
TB_SG2
TB_SG1
Heating and DHW Operation depend on input signal(SG1 / SG2)
Input Signal
Status
display
Command
Cost
(Electric)
SG1
SG2
SGN
Open
Open
Normal
Operation
Normal
Price
SG1
Close
Open
Operation
Off
(Utility lock)
Operation
Heating
Domestic How Water
Maintain operation
status
Maintain operation
status
High
Price
Forced internal
operation off
Forced internal
operation off
Low
Price
Target temperature
change automatically
depend on SG Mode
value in installer setting
- Step 0 : maintain
target temperature
- Step 1 : increase 2 °C
from target
temperature
- Step 2 : increase 5 °C
from target
temperature
Target temperature
change automatically
depend on SG Mode
value in install setting
- Step 0 : increase 5 °C
from target
temperature
- Step 1 : increase 5 °C
from target
temperature
- Step 2 : increase 7 °C
from target
temperature
SG2
Open
Close
Operation On
Recommend
SG3
Close
Close
Operation On Very Low Maintain operation
Commend
Price
status
Target temperature
change automatically to
80 °C
ACCESSORIES INSTALLATION
71
3Way Valve(A) is required to operate DHW water tank. Role of 3way valve is flow switching
between under floor heating loop and water tank heating loop.
Plus, it is required to operate 3rd party boiler.
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 DHW water tank.’
How to wire 3way valve(A)
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)
4
5
6
L
L1
N
(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(A)
72 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
2
3
4
OFF
1 2 3 4 5 6 7 8
1 2 3 4
ON
SW2
1
5
6
7
OFF
ON
1 2 3 4
ENGLISH
CONFIGURATION
SW3
1
OFF
OFF is selected
ON is selected
8
CONFIGURATION 73
ENGLISH
DIP Switch Information
Option Switch 2
Description
Setting
Role when central
controller is equipped
1
As Master
1
As Slave
2
Accessory installation
information
2
3
2
3
Cycle
Flow Switch
(Flow Sensor)
Detection
Selecting electric
heater capacity
Thermostat installation
information
3
Default
1
Unit + Outdoor unit
is installed
Unit + Outdoor unit
+ DHW tank
is installed
2
3
DHW tank Only
4
Heating Only
5
Always
5
While water pump is on
4
5
6
Electric heater is not used
6
7
8
Thermostat is NOT installed
8
Thermostat is installed
7
8
74 CONFIGURATION
ENGLISH
Description
Option Switch
1
Setting
Default
Description
Setting
Default
1
As Master
1
As Slave
2
Common 3rd party
2
SIEMENS
1
MODBUS
MODBUS
Function
2
Reserved
3
3
4
4
Reserved
Reserved
3
Reserved
4
Option Switch 3
Description
Setting
Description
Remote
Air Sensor
ANTIFREEZE
Default
1
Remote sensor is not installed
Setting
1
Remote sensor is installed
2
Antifreeze mode not use
2
Reserved
3
Not Use
4
Reserved
3
3
4
4
Reserved
Default
1
CONFIGURATION 75
ENGLISH
DIP Switch Information
Indoor Cycle PCB
※All pins are reserved (Don’t select)
ON
Default
SW2
1
2
3
4
5
6
7
OFF
OFF is selected
ON is selected
Outdoor Cycle PCB
※All pins are reserved (Don’t select)
ON
Default
SW2
1
2
3
4
5
6
7
OFF
OFF is selected
ON is selected
76 CONFIGURATION
ENGLISH
!
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 Operable
- Heavy trouble : Heating Operable only
- Critical trouble : Service center request
AWHP operates when user pressed OK button on pop-up window.
CONFIGURATION 77
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.
ENGLISH
!
78 SERVICE SETTING
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.
SERVICE SETTING 79
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
ENGLISH
Service contact
80 SERVICE SETTING
ENGLISH
Model information
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
- 1 kWh = 1 kBtu * 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 18 kBtu, it is displayed as 5 kWh.
OK
SERVICE SETTING 81
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
ENGLISH
RMC version lnformation
82 SERVICE SETTING
ENGLISH
Open source license
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
INSTALLER SETTING 83
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.
84 INSTALLER SETTING
ENGLISH
Installer setting
• 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 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
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
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
INSTALLER SETTING 85
Heating temp. setting
Pump setting in heating
Forced operation
CN_CC setting
Description
At the leaving water control in heating mode, the control reference
water temperature position setting
Set water pump on / off delay option in heating mode
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.)
Smart Grid(SG) setting
Select whether to use or not use the SG Mode function of the
product, set the operation option value in SG1 step.
IDU Address Verification
Function to check the result of Auto Addressing of outdoor unit
with remote control.
CN_EXT
Use External Pump
Pump Prerun/Overrun
Data logging setting
Password Initialization
setting
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
Set up to control an external water pump
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.
ENGLISH
Function
86 INSTALLER SETTING
ENGLISH
3 Minutes Delay
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
INSTALLER SETTING 87
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
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.
ENGLISH
Select Temperature Sensor
88 INSTALLER SETTING
ENGLISH
Dry Contact Mode
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).
INSTALLER SETTING 89
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
ENGLISH
Central Control Address
90 INSTALLER SETTING
ENGLISH
Pump test run
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
INSTALLER SETTING 91
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.
ENGLISH
Air heating set temp.
92 INSTALLER SETTING
ENGLISH
Water heating set temp
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.
80
80~50
Min.
30
46~30
* Upper / lower limit / default value is in °C.
INSTALLER SETTING 93
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.
45~30
* Upper / lower limit / default value is in °C
ENGLISH
DHW set temp
94 INSTALLER SETTING
ENGLISH
Tank disinfection setting 1, 2
• Disinfection operation is special DHW tank operation mode to kill and to prevent growth of
viruses inside the tank.
- Disinfection active : Selecting enable or disable of disinfection operation.
- Start date : Determining the date when the disinfection mode is running.
- Start time : Determining the time when the disinfection mode is running.
- Max temp. : Target temperature of disinfection mode.
- Duration time : Duration of disinfection mode.
Temperature profile
of Disinfection operation
Water temperature
(Inside DHW)
Max temp
Duration time
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.
INSTALLER SETTING 95
• 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
80~40
Min temp
20~1
ENGLISH
Tank setting 1
96 INSTALLER SETTING
ENGLISH
Tank setting 2
• 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
INSTALLER SETTING 97
- Hysteresis : temperature gap from target DHW temperature. This value is required to prevent
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.
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.
98 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 99
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
100 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 101
• At the leaving water control in heating mode, the control reference water temperature position
setting
- If the air / leaving water temperature selection setting is set to leaving water temperature
• Change setting values using [<,>(left/right)] button
• The function is not available for some products.
Value
Outlet (Default)
Inlet
ENGLISH
Heating temp. setting
102 INSTALLER SETTING
ENGLISH
Pump setting in heating
• 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
-
INSTALLER SETTING 103
• 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 hours ~ 180 hours
-
Oper. Time
1 min ~ 10 min
-
ENGLISH
Forced operation
104 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 105
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
ENGLISH
Smart Grid(SG)
106 INSTALLER SETTING
ENGLISH
IDU Address Verification
It is function to check the result of Auto Addressing of outdoor unit with remote control.
IDU address setting function is available from indoor unit.
• In the installer setting list, select IDU Address Verification, and press [OK] button to move to
the detail screen.
OK
INSTALLER SETTING 107
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
ENGLISH
CN_EXT
108 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 109
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
Value
Default
Setting Range
Prerun
1 min
1~10 min
Overrun
1 min
1~10 min
ENGLISH
Pump Prerun/Overrun
110 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 111
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
112 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 113
ENGLISH
Overview settings
Menu Structure
Menu
Sub function
Service contact
.......................................................82
Model information
.......................................................83
RMC version lnformation
.......................................................84
Open source license
.......................................................85
3 Minutes Delay
.......................................................88
Select Temperature Sensor
.......................................................89
Installer
Dry Contact Mode
.......................................................90
Central Control Address
.......................................................91
Pump Test run
.......................................................92
Air heating set temp.
.......................................................93
Water heating set temp
.......................................................94
DHW set temp
.......................................................95
Tank disinfection setting 1, 2
.......................................................96
Tank setting 1
.......................................................97
Tank setting 2
.......................................................98
DHW time setting
.....................................................100
TH on/off Variable, heating air
.....................................................101
TH on/off Variable, heating water .....................................................102
Heating temp. setting
.....................................................103
Pump setting in heating
.....................................................104
Forced operation
.....................................................105
CN_CC
.....................................................106
Smart Grid(SG)
.....................................................107
IDU Address Verification
.....................................................108
114 INSTALLER SETTING
ENGLISH
CN_EXT
.....................................................109
Use External Pump
.....................................................110
Pump Prerun/Overrun
.....................................................111
Data logging
.....................................................112
Password Initialization
.....................................................113
COMMISSIONING 115
ENGLISH
COMMISSIONING
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 25 mA.
• 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
Parts inspection
11
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.
Product Installation
12
• There should be no apparently damaged parts inside the unit.
116 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
Electricity
4
Check Point
• In normal state, the pressure gauge (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 117
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
No
Is there any temperature
difference between intake and
discharged water?
No
* Check the load (In/Out Temp.)
* Check pipe length and amount of
refrigerant
* Check for abnormal sound in
outdoor unit (comp.,Fan, others )
* 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(R410A)
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
118 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 is not
satisfactory.
• Charged water is not
enough.
• Water flow rate is low.
• Water inlet temperature is
too high.
• Check pressure gage and charge more water until pressure
gage is indication 2~2.5 Bar
• Check if strainer gathers too much particles. If so, strainer
should be cleaned.
• Check if pressure gauge indicates above 4 Bar
• Check if water pipe is getting closed due to stacked paticles
or lime.
• If water inlet temperature is above 78 °C, the unit does not
operated for the sake of system protection
2
Although
electric power
supply is OK
(remote
controller
displays
• Water inlet temperature is
information), the too low.
unit does not
start working.
• If water inlet temperature is below 5 °C, 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).
3
Water is flood
out through
drain hose.
• 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.
• Thermal protector of water
tank heater is activated.
• Open the side panel of the DHW tank and push the reset
button of the thermal protector. (for more detail information,
please refer to installation manual of DHW tank.
• DHW Heating is disabled.
• Select DHW Heating Operation and identify if icon is displayed
on the remote controller.
4
DHW is not hot.
COMMISSIONING 119
Indoor Unit
- This function displays the disorder types at the self diagnostics and the occurrence of the
disorder for the product.
- The disorder display shows the code in the following table on the red/green LED of the wired
remote controller and outdoor unit control board.
- If two or more types of disorders occur simultaneously, it displays in the order of the error
number.
- After error occurs, the error code disappears when the disorder is repaired.
h Error code 01, 08, 17, 18 can be operated with emergency operation.
Error
No.
Error Type
Main Reasons
CH01
Air temperature sensor error
Air temperature sensor disconnection or short
circuit
CH03
No communication between wired
remote controller & indoor unit
The remote controller does not receive the signal
from indoor unit during specific time
CH05
Indoor unit & outdoor unit
communication error
No signal communication between indoor unit &
outdoor unit
CH08
Water tank temperature sensor error
Water tank temperature sensor disconnection or
short circuit
CH09
Indoor unit EEPROM error
Communication between the micro-processor &
the EEPROM / Error due to EEPROM damage
CH11
Indoor unit & inverter PCB
communication error
No signal communication between indoor unit &
inverter PCB
CH12
Inverter PCB error
Error occurrence in inverter PCB
CH13
Problem in Solar-thermal sensor
Solar pipe temperature sensor of indoor unit is
open or short.
CH14
Flow switch error
Abnormal working of flow switch
CH15
Water pipe overheated
Water outlet temperature is above 90 °C
CH16
Water inlet & outlet temperature
sensor error
Water inlet & outlet temperature sensor
disconnection or short circuit simultaneously
CH17
Water inlet temperature sensor error
Water inlet temperature sensor disconnection or
short circuit
CH18
Water outlet temperature sensor
error
Water outlet temperature sensor disconnection
or short circuit
ENGLISH
Troubleshooting for Error Code
120 COMMISSIONING
ENGLISH
Inverter PCB error display method
Red LED means error number 10 digits, and green LED
means 1 digit, and if red and green blink at the same time, it
means the unit of 100.
Ex) Inverter compressor IPM defect Error : error number 21
Error
Code
Description
LED 1
(Red)
LED 2
(Green)
Red LED1: 10 digits
21
Error
No.
Inverter compressor IPM efect 2times ◑
Error Type
bc21 Inverter compressor IPM defect
bc22 Inverter compressor overcurrent
bc23 Inverter compressor DC Link low voltage
bc25 High/low Inverter input voltage
1time ◑
Green LED2: 1 digit
Main Reasons
Inverter compressor drive IPM defect / inverter compressor
defect
Increase of inverter compressor CT value
After inverter activation relay is ON, DC voltage recharge
defect
Inverter input voltage exceeds the unit limit and lasts for 4 s
(173V ~ 289V)
bc26 Inverter compressor activation failure
Inverter compressor error, causing initial activation failure
bc27 Inverter PSC/PFC Fault Error
Error by overcurrent at inverter input
bc28 Inverter DC Link high voltage error
Inverter DC voltage recharge, causing compressor OFF
Inverter compressor activation failure or increase of CT
value
Excessive rise of inverter compressor discharge
Excessive rise of inverter compressor discharge
temperature
temperature, causing compressor OFF
Excessive rise of high pressure of inverter
Excessive rise of high pressure of inverter compressor,
compressor
causing compressor OFF
Excessive drop of low pressure of inverter
Excessive drop of low pressure of inverter compressor,
compressor
causing compressor OFF
High pressure/low pressure ratio of inverter compressor is
Low pressure ratio error of inverter compressor
maintained at below 1.8 for 3 min. or more
Inverter compressor CT sensor defect
Inverter compressor CT sensor defect
Inverter compressor discharge pipe temperature
Inverter compressor discharge temperature sensor
sensor defect
disconnection or short circuit
Low pressure sensor disconnection or short circuit of
Low pressure sensor defect of inverter compressor
inverter compressor
High pressure sensor disconnection or short circuit of
High pressure sensor defect of inverter compressor
inverter compressor
Inverter inside air temperature sensor disconnection or
Inverter inside air temperature sensor defect
short circuit
Inverter compressor suction pipe temperature
Inverter compressor suction temperature sensor
sensor defect
disconnection or short circuit
Communication error(indoor unit → outdoor unit
Outdoor unit does not receive signal from indoor unit
main PCB)
Inverter PCB EEPROM error
Inverter PCB EEPROM error
Inverter PCB heat generation, causing the rise of heatsink
Excessive rise of inverter heatsink temperature
temperature
Inverter heatsink temperature sensor
Inverter heatsink temperature sensor disconnection or short
defect
circuit
Overcurrent (Peak) detected at inverter input
Error by overcurrent detection at inverter input
bc29 Inverter compressor overcurrent
bc32
bc34
bc35
bc36
bc40
bc41
bc42
bc43
bc44
bc46
bc53
bc60
bc62
bc65
bc73
COMMISSIONING 121
Outdoor unit related error (CH)
Error No.
Error Type
Main Reasons
2
1
1
Inverter compressor IPM defect
Inverter compressor drive IPM defect /
inverter compressor defect
2
2
1
Inverter compressor over current
Increase of inverter compressor CT value
2
3
1
Inverter compressor DC Link low
voltage
After inverter activation relay is ON, DC
voltage recharge defect
2
4
1
Outdoor Unit High Pressure Switch
System is turned off by outdoor unit high
pressure switch.
2
5
1
High/low Inverter input voltage
Inverter input voltage exceeds the unit limit
and lasts for 4 s (173V ~ 289V)
2
6
1
Inverter compressor activation
failure
Inverter compressor error, causing initial
activation failure
2
7
1
Inverter PSC/PFC Fault Error
Error by overcurrent at inverter input
2
8
1
Inverter DC Link high voltage error
Inverter DC voltage recharge, causing
compressor OFF
2
9
1
Inverter compressor overcurrent
Inverter compressor activation failure or
increase of CT value
3
2
1
Excessive rise of inverter compressor
discharge temperature
Excessive rise of inverter compressor
discharge temperature, causing compressor
OFF
3
4
1
Excessive rise of high pressure of
inverter compressor
Excessive rise of high pressure of inverter
compressor, causing compressor OFF
3
5
1
Excessive drop of low pressure of
inverter compressor
Excessive drop of low pressure of inverter
compressor, causing compressor OFF
3
6
1
Low pressure ratio error of inverter
compressor
High pressure/low pressure ratio of inverter
compressor is maintained at below 1.8 for 3
min. or more
4
0
1
Inverter compresso’r CT sensor defect Inverter compressor CT sensor defect
4
1
1
Inverter compressor discharge pipe
temperature sensor defect
Inverter compressor discharge temperature
sensor disconnection or short circuit
4
2
1
Low pressure sensor defect of
inverter compressor
Low pressure sensor disconnection or short
circuit of inverter compressor
4
3
1
High pressure sensor defect of
inverter compressor
High pressure sensor disconnection or short
circuit of inverter compressor
4
4
1
Inverter inside air temperature
sensor defect
Inverter inside air temperature sensor
disconnection or short circuit
4
5
1
Outdoor Unit Heat Exchanger
Temperature Sensor Fault
Outdoor Unit Heat Exchanger Temperature
Sensor Open or Short
ENGLISH
Outdoor Unit
• Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7segment LED of outdoor unit control board as shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
• Error Display
1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.
122 COMMISSIONING
ENGLISH
Outdoor unit related error (CH)
Error No.
Error Type
Main Reasons
Inverter compressor suction pipe
temperature sensor defect
Defective IPM Temperature
Sensor
Inverter compressor suction temperature
sensor disconnection or short circuit
Disconnection or short circuit on IPM
temperature sensor of the outdoor unit
4
6
1
4
9
1
5
2
1
Communication error : inverter PCB ’
Main PCB
Failing to receive inverter signal at main PCB
of Outdoor Unit
5
3
1
Communication error(indoor unit ’
outdoor unit main PCB)
Outdoor unit does not receive signal from
indoor unit
5
7
1
Communication error : inverter PCB ’
Main PCB
Restriction of Outdoor Unit (Inverter PCB)
6
0
1
Inverter PCB EEPROM error
Inverter PCB EEPROM error
6
2
1
Excessive rise of inverter heatsink
temperature
Inverter PCB heat generation, causing the rise
of heatsink temperature
6
7
1
Outdoor Unit Fan Lock
Restriction of Outdoor Unit Fan
7
3
1
Overcurrent (Peak) detected at
inverter input
Error by overcurrent detection at inverter input
8
6
1
Outdoor Unit Main PCB EEPROM
Error
Communication Fail Between Outdoor Unit
Main MICOM and EEPROM or omitting
EEPROM
8
8
1
PFC PCB EEPROM Error
Communication Fail Between Outdoor Unit
PFC MICOM and EEPROM or omitting
EEPROM
1 1 3 1
Outdoor Unit Liquid pipe
Temperature Sensor Error
Liquid pipe temperature sensor of outdoor unit
is open or short
1 1 5 1
Outdoor Unit Subcooling Outlet
Temperature Sensor Error
Outdoor Unit Subcooling Outlet Temperature
Sensor open or short
1 5 1 1
Failure of operation mode
conversion at Outdoor Unit
Pressure unbalance between outdoor units
[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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