LG THERMA V HN0916T User manual

INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
www.lg.com
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
Copyright © 2020 LG Electronics Inc. All Rights Reserved.
MFL68681818
Rev.00_070220
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
PORTUGUÊS
MAGYAR
БЪЛГАРСКИ
SRPSKI
HRVATSKI
SLOVENŠČINA

TABLE OF CONTENTS
2
ENGLISH
5PREFACE
[Chapter 1]
6SAFETY INSTRUCTIONS
[Chapter 2]
14 INSTALLATION PART
[Chapter 3]
15 GENERAL INFORMATION
15 Model Information
17 Model name and related information
18 Parts and Dimensions
21 Control Parts
22 Control Panel
23 Typical Installation Example
26 Cycle Diagram : Internal
27 Cycle Diagram : External
28 System planning and preparation
[Chapter 4]
29 INSTALLATION OF OUTDOOR UNIT
29 Conditions where Outdoor Unit is Installed
29 Drill a Hole in the Wall
30 Transporting the Unit
32 Installation at Seaside
32 Seasonal wind and cautions in winter
[Chapter 5]
33 INSTALLATION OF INDOOR UNIT
33 Conditions where Indoor Unit is Installed
34 Transporting the Unit
35 Connecting Condensate drainage
35 Front Panel Removal
36 Floor area requirement : indoor unit
37 Ventilation requirements
40 Electrical Wiring
[Chapter 6]
43 PIPING AND WIRING FOR OUTDOOR UNIT
43 Refrigerant Piping
44 Preparation for Piping
45 Connecting Pipe to Indoor Unit
45 Connecting Pipe to Outdoor Unit
48 Finalizing
49 Leakage test and Evacuation
51 Electrical Wiring
TABLE OF CONTENTS

3
TABLE OF CONTENTS
ENGLISH
[Chapter 7]
55 HYDRAULIC CONNECTION FOR INDOOR UNIT
55 General Considerations
57 Connection to the Domestic hot water system
60 Connection to the Heating system
62 Water Charging
63 Water pump Capacity
63 Pressure Drop
64 Performance curve
66 Water Quality
66 Frost protection
[Chapter 8]
67 ACCESSORIES INSTALLATION
68 Before Installation
68 Domestic hot water expansion vessel – integrated into the unit
69 Buffer tank – integrated into the unit
72 Thermostat
77 3rd Party Boiler
78 3rd Party Controller
79 Meter Interface
80 2 Zone Controller
81 Central Controller
83 Dry Contact
85 External Controller - Setting up programmable digital input operation
86 Remote Temperature Sensor
88 External pump
89 Wi-fi Modem
90 Smart Grid
91 2Way Valve
92 Final check
[Chapter 9]
93 CONFIGURATION
93 DIP Switch Setting
99 SERVICE SETTING
99 How to enter service setting
99 Service setting
100 Service contact
101 Model information
102 RMC version information
103 Open source license
104 INSTALLER SETTING
104 How to enter installer setting
105 Installer setting
108 Overview settings
111 Select Temperature Sensor
112 Use Heating Tank Heater
113 Mixing circuit
114 Use External Pump

4
TABLE OF CONTENTS
ENGLISH
115 RMC master/slave
116 LG Therma V Configuration
117 Forced operation
118 Pump Capacity
119 Pump Prerun/Overrun
120 Password Reset
121 Heating temp. setting
122 Air heating set temp.
123 Water heating set temp
124 TH on/off Variable, heating air
125 TH on/off Variable, heating water
126 Pump setting in heating
127 Heater on temperature
128 Screed drying
130 Cooling temp. setting
131 Air cooling set temp
132 Water cooling set temp
133 Water supply off temp. during cooling
135 TH on/off Variable, cooling air
136 TH on/off Variable, cooling water
137 Pump setting in cooling
138 Seasonal auto temp
140 DHW set temp
141 Tank disinfection setting 1, 2
142 Tank setting 1
143 Tank setting 2
145 DHW time setting
146 Pump test run
147 Frost Protection Temp.
148 Dry Contact Mode
149 Central Control Address
150 CN_CC
151 Smart Grid (SG)
152 Power Supply Blockage (Smart Grid)
153 Modbus Address
154 CN_EXT
155 3rd Party Boiler
156 Meter Interface
157 Zone
159 Pump operation time
160 IDU operation time
161 Current flow rate
162 Data logging
[Chapter 10]
163 COMMISSIONING
163 Check List before Starting Operation
164 Starting Operation
165 Starting Operation flow chart
165 Airborne Noise Emission
166 Vacuum & Charge of Refrigerant
169 Decommissioning and Recycling
171 Troubleshooting
176 Reset of the thermal protection of the electric heater

5
PREFACE
ENGLISH
PREFACE
This installation manual is to present information and guide about understanding, installing,
and checking .
Your careful reading before installation is highly appreciated to make no mistake and to prevent
potential risks. The manual is divided into ten chapters. These chapters are classified according to
installation procedure. See the table below to get summarized information.
REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.
TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.
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, cycle diagram, parts and dimensions, 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
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
• Information about installation setting.
• Dip switch, service, installer setting etc.
Chapter 10
• Check points before starting operation are explained.
• Troubleshooting, maintenance, and error code list are presented to correct problems.

SAFETY INSTRUCTIONS
6
ENGLISH
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.
!
Read the precautions in this
manual carefully before
operating the unit.
This appliance is filled with
flammable refrigerant (R32)
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.
SAFETY INSTRUCTIONS
WARNING
This indicates that the failure to follow the instructions can
cause serious injury or death.
CAUTION
This indicates that the failure to follow the instructions can
cause the minor injury or damage to the product.
This symbol is displayed to indicate matters and
operations that can cause risk. Read the part with this
symbol carefully and follow the instructions in order to
avoid risk.
!
!
!
The following safety guidelines are intended to prevent
unforeseen risks or damage from unsafe or incorrect operation
of the appliance. The guidelines are separated into ‘WARNING’
and ‘CAUTION’ as described below.

7
SAFETY INSTRUCTIONS
ENGLISH
• Always ground the unit.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
• Always install a dedicated circuit and breaker.
-
Improper wiring or installation may cause fire or electric shock.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not install, remove, or reinstall the unit by yourself
(customer).
- There is risk of fire, electric shock, explosion, or injury
• For antifreeze, always contact the dealer or an authorized
service center.
- Almost the antifreeze is a toxic product.
• For installation, always contact the dealer or an authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• 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.

8
SAFETY INSTRUCTIONS
ENGLISH
• 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.
• Compliance with national gas regulations shall be observed.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• The installation of pipe-work shall be kept to a minimum.
• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts. A vacuum valve shall
be provided to evacuate the interconnecting pipe and/or any
uncharged refrigerating system part.
•
Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorises
their competence to handle refrigerants safely in accordance
with an industry recognised assessment specification.
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.
• Flexible refrigerant connectors (such as connecting lines
between the indoor and outdoor unit) that may be displaced
during normal operations shall be protected against mechanical
damage.
• Pipe-work shall be protected from physical damage.
• Mechanical connections (mechanical connectors or flared
joints) shall be accessible for maintenance purposes.
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.

SAFETY INSTRUCTIONS
9
ENGLISH
• Do not place anything on the power cable.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
• Do not touch (operate) the unit with wet hands.
- There is risk of fire or electric shock.
• Do not place a heater or other appliances near the power
cable.
- There is risk of fire or electric shock.
• Do not allow water to run into electric parts.
- There is risk of fire, failure of the unit, or electric shock.
• Do not store or use flammable gas or combustibles near the
unit.
- There is risk of fire or failure of unit.
• Do not use the unit in a tightly closed space for a long time.
- It may cause damage to the unit.
• When flammable gas leaks, turn off the gas and open a
window for ventilation before turning the unit on.
- There is risk of explosion or fire.
• If strange sounds, or smell or smoke comes from unit, turn the
breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane. If
possible, remove the unit from the window before the
hurricane arrives.
- There is risk of property damage, failure of unit, or electric
shock.
• Do not open the front cover of the unit while operation. (Do
not touch the electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or unit failure.
• Do not touch any electric part with wet hands. you should be
power off before touching electric part.
- There is risk of electric shock or fire.
• Do not touch refrigerant pipe and water pipe or any internal
parts while the unit is operating or immediately after operation.
- There is risk of burns or frostbite, personal injury.

10
SAFETY INSTRUCTIONS
ENGLISH
• 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.
• The appliance shall be stored in a well-ventilated area where
the room size corresponds to the room area as specified for
operation.
• The appliance shall be stored in a room without continuously
operating open flames (for example an operating gas
appliance) and ignition sources (for example an operating
electric heater).

11
SAFETY INSTRUCTIONS
ENGLISH
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of flammable
refrigerants.)
• When mechanical connectors are reused indoors, sealing parts
shall be renewed. When flared joints are reused indoors, the
flare part shall be re-fabricated.
• Periodic(more than once/year) cleaning of the dust or salt
particles stuck on the heat exchangers by using water.
• Keep any required ventilation openings clear of obstruction.
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or
repair of unit.
- Low refrigerant levels may cause failure of unit.
• Keep level even when installing the unit.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the unit.
- Avoid personal injury.
• 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.
• Do not install the unit in potentially explosive atmospheres.
• The water may drip from the discharge pipe of the pressure-
relief device and that this pipe must be left open to the
atmosphere.
• The pressure-relief device is to be operated regularly to
remove lime deposits and to verify that it is not blocked.
• A discharge pipe connected to the pressure-relief device is to
be installed in a continuously downward direction and in a
frost-free environment.
!

12
SAFETY INSTRUCTIONS
ENGLISH
Operation
• Do not use the unit for special purposes, such as preserving
foods, works of art, etc.
- There is risk of damage or loss of property.
• Use a soft cloth to clean. Do not use harsh detergents,
solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic
parts of the unit.
• Do not step on or put anything on the unit.
- There is risk of personal injury and failure of unit.
• Use a firm stool or ladder when cleaning or maintaining the
unit.
- Be careful and avoid personal injury.
• Do not turn on the breaker or power under condition that front
panel cabinet, top cover, control box cover are removed or
opened.
- Otherwise it may cause fire, electric shock, explosion or
death.
• The appliance shall be disconnected from its power source
during service and when replacing parts.
• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.
• The Installation kit supplied with the appliance are to be used
and that old Installation kit should not be reused.
• If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard. Installation work must be performed in
accordance with the national wiring standards by authorized
personnel only.
• This equipment shall be provided with a supply conductor
complying with the national regulation.
• The instructions for service to be done by specialized
personnel, mandated by the manufacturer or the authorized
representative may be supplied in only one Community
language which the specialized personnel understand.

13
SAFETY INSTRUCTIONS
ENGLISH
• 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.

14
INSTALLATION PART
ENGLISH
Thank you for choosing LG Electronics Air-to-Water Heat Pump
Before starting installation, please make it sure that all parts are found inside the product box.
INDOOR UNIT BOX
INSTALLATION PART
Item Image
Outdoor Unit
U4 Chassis
(5/7/9kW)
Damper (4EA)
Drain Cap (2EA)
Drain Nipple
Item Image
Indoor Unit
Installation Manual
Shut-off valve
Shut-off valve with integrated strainer
OUTDOOR UNIT BOX

15
GENERAL INFORMATION
ENGLISH
GENERAL INFORMATION
With advanced inverter technology, is suitable for applications like under floor
heating, under floor cooling, and hot water generation. By Interfacing to various accessories user
can customize the range of the application.
In this chapter, general information of is presented to identify the installation
procedure. Before beginning installation, read this chapter carefully and find helpful information
on installation.
Model Information
Factory Model Name
Outdoor unit
Function
I : Integrated DHW tank
ZH N W 2 0 6 0 6 I 0
Heater Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
Water Tank Capacity
20 : 200L
Heater Capacity
06 : 6 kW
Model Type
W : Inverter Heat Pump
Classification
N : Indoor Unit
ZH : Air-to-Water-Heat Pump for R32
Series Number
ZHUW 0 9 6 A 0
Series Number
Function
A : General heating heat pump
Electrical ratings
6 : 1 phase 220-240 V~ 50 Hz
Heating Capacity
05 : 5 kW 07 : 7 kW 09 : 9 kW
Model Type
W : Inverter Heat Pump
Classification
U : Outdoor Unit
ZH : Air-to-Water-Heat Pump for R32
Indoor unit

16
GENERAL INFORMATION
ENGLISH
Buyer Model Name
Outdoor unit
09 M R U 4 4
Series Number
Chassis
U4
Classification
U : Outdoor Unit
Refrigerant
R : R32
M : Middle Temperature
Electrical ratings
1 : 1Ø, 220-240 V AC 50 Hz
Heating Capacity
Ex) “05” : 5 kW, “07” : 7 kW, “09” : 9 kW
Classification
U : Outdoor Unit
H : Air to Water Heat Pump
1UH
Indoor unit
09 6 T N B 1
Series Number
Chassis (Platform)
B : DHW tank integrated Platform
Classification
N : Indoor Unit
T :DHW tank integrated model
Heater Capacity
6 : 6 kW Heater
Heater Electrical ratings
1 : 1Ø, 220-240 V, 50 Hz
Heating Capacity
Ex) “05” : 5 kW, “07” : 7 kW, “09” : 9 kW
Classification
N : Indoor Unit
H : Air to Water Heat Pump
1NH

17
GENERAL INFORMATION
ENGLISH
Model name and related information
*1 : tested under EN14511
(water temperature 30 °C ’35 °C at outdoor ambient temperature 7 °C / 6 °C)
*2 : tested under EN14511
(water temperature 23 °C ’18 °C at outdoor ambient temperature 35 °C / 24 °C)
hAll appliances were tested at atmospheric pressure.
Model Name
Built-In Backup
Heater(kW)
Capacity
Power Source
(Unit)
Refrigerant Outdoor Unit Indoor Unit Heating
(kW) *1
Cooling
(kW) *2
Capacity (kW) Tank Capacity (L)
R32
5
200
1Ø 2 (2)
1Ø 4 (2+2)
3Ø 6 (2+2+2)
5.5 5.5
220-240 V~
50 Hz
7 7.0 7.0
9 9.0 9.0

18
GENERAL INFORMATION
ENGLISH
Parts and Dimensions
Indoor unit : External
(unit : mm)
200
65 65.262.6 62.6 107.4107.7
1
9
2
3 4 5 6 7
680
1810 71
602
8
Description
1 SAE 5/8" Refrigerant gas pipe
2 SAE 3/8" Refrigerant liquid pipe
3 G3/4" Domestic hot water outlet
4 G3/4" Domestic cold water Inlet
5 G3/4" DHW Re-circulation
6 G1" Heating circuit inlet
7 G1" Heating circuit outlet
8 Built-in Remote controller
9 Cable lead throughs

19
GENERAL INFORMATION
ENGLISH
(unit : mm)
6
5
4
3
2
1
7
8
9
10
11
12
13 14
15
16
17
18
Indoor unit : Internal
Description
No Item No Item
1 Domestic hot water tank 10 Indoor unit PCB
2 Electric heater 11 Terminal blocks
3 Flow sensor 12 Magnesium anode
4 Plate-heat-exchanger (Refrigerant/Water) 13 DHW tank sensor
5 3-way-valve DHW / Heating 14 Plate-heat-exchanger (Water/DHW)
6 Pressure gauge 15 DHW water pump
7 Expansion vessel for Heating 16 DHW strainer
8 Safety thermostat 17 Main water pump
9 Electric heater Relay 18 DHW Expansion vessel (Accessory)

20
GENERAL INFORMATION
ENGLISH
Outdoor unit : External
Product Heating Capacity :
5 kW,7 kW,9 kW
U4 Chassis
(unit : mm)
Supporter
4-holes for anchor bolts
390
834
165 165 390 620
950
809 330
No Name
1 Liquid-side Service Valve
2 Gas-side Service Valve
3 Air discharge Grille
Description