LG Hydro Kit User manual

ENGLISH
РУССКИЙ ЯЗЫК
ITALIANO ESPAÑOL FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
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.
[ 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
INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
Hydro Kit
Original instruction
www.lg.com
Copyright © 2018 - 2019 LG Electronics Inc. All Rights Reserved.
MFL67086712
Rev.03_082119

Table of contents
2 Hydro Kit
3 SAFETY PRECAUTIONS
7 INSTALLATION PARTS
8 GENERAL INFORMATION
8 Model Information
10 General Information
11 INSTALLATION
11 Transporting the Unit
12 Selection of the best location
12 Installation Space
14 Foundation for Installation
15 Water Piping and Water Circuit Connection
18 Installation Scenes
25 Refrigerant Piping
28 How to connect wirings
29 Wiring Connection
31 Connecting Cables
34 Independent Power Module
36 ACCESSORIES INSTALLATION
36 Location of Accessories and External Parts Connection
38 Main Pump Connection
38 Water tank temperature sensor Connection
39 Thermostat
43 Remote Temperature Sensor
44 3Way Valve
46 2Way Valve
47 Dry Contact
49 External Controller
50 External pump
51 Wi-fi Modem
52 Smart Grid
53 SYSTEM SET-UP
53 DIP Switch Setting
56 Group Control Setting
60 Installer Setting
73 TEST RUN
73 Caution before Operation Test
73 Operation Test of Water Pipe
74 Troubleshooting
76 Airborne Noise Emission
76 Limiting concentration
76 Model Designation
TABLE OF CONTENTS

Safety Precautions
Hydro Kit Installation Manual 3
ENGLISH
To prevent injury to the user or other people and property damage, the following
instructions must be followed.
n Be sure to read before installing the unit.
n Be sure to observe the cautions specified here as they include important items related
to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage.
The seriousness is classified by the following indications.
nMeanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
Installation
• Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
- There is risk of fire or electric shock.
• For electrical work, contact the dealer, seller, a qualified electrician,
or an Authorized Service Center.
- There is risk of fire or electric shock.
• Always ground the unit.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not install, remove, or reinstall the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
WARNING
CAUTION
!
!
WARNING
!

Safety Precautions
4 Hydro Kit
• For antifreeze, always contact the dealer or an authorized service
center.
- Almost the antifreeze is a toxic product.
• The refrigerant of this product is R410A.
- The installation tool such as manifold gauge should be complied
with R410A.
• 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 unit outdoor.
- It may cause damage to the 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.
• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
• This equipment shall be provided with a supply conductor
complying with the national regulation.
Operation
• Take care to ensure that power cable could not be pulled out or
damaged during operation.
- There is risk of fire or electric shock.
• Do not place anything on the power cable.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
• Do not touch (operate) the unit with wet hands.
- There is risk of fire or electric shock.
• Do not place a heater or other appliances near the power cable.
- There is risk of fire or electric shock.

Safety Precautions
Hydro Kit Installation Manual 5
ENGLISH
• 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.
• When the unit is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not be poured to the unit directly.
- There is risk of fire, electric shock, or unit damage.
• Ventilate the unit from time to time when operating it together with
a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the unit.
- There is risk of electric shock.
• Take care to ensure that nobody could step on or fall onto the unit.
- This could result in personal injury and unit damage.
• For installation, always contact the dealer or an Authorized Service
Center.
- There is risk of fire, electric shock, explosion, or injury.
• If the unit is not used for long time, we strongly recommend not to
switch off the power supply to the unit.
- There is risk of water freezing.

Safety Precautions
6 Hydro Kit
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 lay on the cooled floor for long time when the unit is in
cooling operation.
- This could harm to your health.
• 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 unplug the power supply plug of Hydro Kit when stopping
Hydro Kit operation. Always turn Hydro Kit off, using the wired
remote controller.
- A plate heat exchanger burst may happen because of
disconnection of communication between Hydro Kit and the
outdoor unit.
CAUTION
!

Installation Parts
Hydro Kit Installation Manual 7
ENGLISH
Item Image Quantity
Remote Cotroller
/ Cable
OK
1
Sensor Holder 1
Water Tank Temperature
Sensor 1
Strainer 1
Independent
Power Module
(For Medium Temperature)
1
Installation Manual 1
Owner's Manual 1
CN_EXT Cable 1
Installation Parts
Thank you for choosing LG Electronics Hydro Kit .
Before starting installation, please make it sure that all parts are found inside the unit box.
Please readthis install ation manual completelybefore installing the product.
Installation work must be performed in accordancewith the national wiring
standardsby authorized personnel only.
Please retainthis install ation manual for futurereference after reading it thoroughly
[ Representative ]LG Electronics Inc. EU Representative : LG Electronics EuropeanShared
ServiceCenter 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
INSTALLATIONMANUAL
AIR-TO-WATER
HEAT PUMP
Hydro Kit
Originalinstruction
www.lg.com
Copyright© 2018 LG Electronics Inc. All Rights Reserved.
MFL67086712
Rev.00_101118
001
ENGLISH
ɊɍɋɋɄɂɃəɁɕɄ
ITALIANO ESPAÑOL FRANÇAIS DEUTSCH
ǼȁȁǾȃǿȀDZ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBAROMÂNĂ
www.lg.com
P/NO:MFL67870215
Pleaseread thismanual carefully beforeoperating your set and retainitfor future
reference.
HydroKit(ForHigh Temperature)
Originalinstruction
OWNER’SMANUAL
AIR
CONDITIONER
[ Representative ] LGElectronicsInc. EURepresentative:LGElectronics European Shared
ServiceCenter B.V. K rijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer]LGElectronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-
gu,Changwon-si, Gyeongsangnam-do, KOREA
ITALIANO ESPAÑOL
FRANÇAIS
DEUTSCH
фъъцьшщُ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
ENGLISH

General Information
8 Hydro Kit
Model Information
With advanced inverter technology, Hydro Kit is suitable for applications like under floor heating,
and hot water generation. By Interfacing to various accessories user can customize the range of the
application.
Model name and related information
• For Medium Temperature
*1 : Tested under Eurovent Heating condition
(water temperature 30 °C → 35 °C at outdoor ambient temperature 7 °C / 6 °C)
*2 : Tested under Eurovent Cooling condition
(water temperature 23 °C → 18 °C at outdoor ambient temperature 35 °C / 24 °C)
- Max Allowable pressure
High side : 4.2 MPa / Low Side : 2.4 MPa
- Max Allowable water temperature
High side : 50 °C / Low side : 10 °C
- Max Allowable water pressure 0.98 MPa (0.3~10 kgf/cm2)
Type Hydro Kit
HP
Power Supply Ø, V, Hz
Capacity
Cooling
kW
kcal/h
Btu/h
Heating
kW
kcal/h
Btu/h
General Information
10 4
1, 220-240, 50
28 12.3
24 100 10 580
95 900 42 000
31.5 13.8
27 100 11 870
107 500 47 000

General Information
Hydro Kit Installation Manual 9
ENGLISH
• For High Temperature
*1 : Tested under Eurovent Heating condition
(Water temperature 55 ℃ → 65 ℃ at outdoor ambient temperature 7 ℃ / 6 ℃)
- Max Allowable pressure
High side : 4.2 MPa / Low Side : 2.4 MPa
- Max Allowable water temperature
High side : 80 °C / Low side : 10 °C
- Max Allowable water pressure 0.98 MPa (0.3~10 kgf/cm2)
Type
Hydro Kit
HP
Power Supply Ø, V, Hz
Capacity Heating
kW
kcal/h
Btu/h
Refrigerant Type
Quantity kg(lbs)
84
1, 220-240, 50
25.2 13.8
21 700 11 870
85 900 47 000
R134a
3(6.6) 2.3(5.04)

General Information
10 Hydro Kit
General Information
Accessories supported by LG Electronics
To extend the functionality of Hydro Kit , there are various external auxiliary apparatus called as
"accessories".
They are classified by "accessories" and "3rd party accessories" according to the manufacturer.
Accessories are presented LG Electronics, and 3rd party accessories are presented by related
manufacturers.
Accessories supported by 3rd party Companies
Item Purpose Specification
Solar
Thermal System
To generate auxiliary
heating energy for water tank
Thermostat To control the unit by air
temperature
Heating-Only type
(230 V AC or 24 V AC)
Cooling/Heating type
(230 V AC or 24 V AC
with Mode selection switch)
3way valve
and actuator
To control water flow for hot
water heating or floor heating
3 wire, SPDT (Single Pole Double
Throw) type, 230 V AC
2way valve
and actuator
To control water flow for
Fan Coil Unit
2 wire, NO(Normal Open) or NC
(Normal Closed) type, 230 V AC
Item Purpose Model
(Medium Temperature)
Model
(High Temperature)
Remote Air
Sensor
To control the unit by air
temperature PQRSTA0 PQRSTA0
Dry Contact To receive on & off external
signal
PDRYCB000 /
PDRYCB100 /
PDRYCB300
PDRYCB000 /
PDRYCB100 /
PDRYCB300
Solar Thermal Kit To operate with sanitary
water tank PHLLA