LG THERMA V HM141MR User manual

INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
www.lg.com
Copyright © 2018 - 2022 LG Electronics Inc. All Rights Reserved.
MFL68026607
Rev.16_092722
Original instruction
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.
PORTUGUÊS
MAGYAR
БЪЛГАРСКИ
SRPSKI
HRVATSKI
SLOVENŠČINA
DANSK
ENGLISH ITALIANO ESPAÑOL
FRANÇAIS
DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ

TABLE OF CONTENTS
2
ENGLISH
7PREFACE
[Chapter 1]
8SAFETY INSTRUCTIONS
[Chapter 2]
16 INSTALLATION PART
[Chapter 3]
17 GENERAL INFORMATION
17 Model Information
19 Model name and related information
20 Parts and Dimensions
26 Control Parts
28 Remote Controller
29 Typical Installation Example
35 Cycle Diagram
38 Water cycle
[Chapter 4]
41 INSTALLATION
41 Transporting the Unit
42 Installation places
43 Multiple installation
45 Installation at Seaside
45 Seasonal Wind and Cautions in Winter
46 Foundation for Installation
47 Electrical Wiring
57 Wiring of main power supply and equipment capacity
58 Water Piping and Water Circuit Connection
59 Pipe Insulation
60 Water Charging
61 Water pump Capacity
61 Pressure Drop
62 Performance curve
63 Water Quality
63 Frost protection by antifreeze
TABLE OF CONTENTS

3
TABLE OF CONTENTS
ENGLISH
64 Frost protection by antifreeze valve
66 Water Volume and Expansion Vessel Pressure
[Chapter 5]
67 ACCESSORIES INSTALLATION
67 Accessories supported by LG Electronics
69 Accessories supported by 3rd party Companies
70 Before Installation
70 Thermostat
75 2nd Circuit
80 3rd Party Boiler
81 3rd Party Controller
82 Meter Interface
83 Central Controller
84 Remote Controller
88 DHW Tank
93 DHW Tank Kit
95 Solar Thermal Kit
97 Dry Contact
99 External Controller - Setting up programmable digital input operation
100 Remote Temperature Sensor
103 Solar pump
104 External pump
105 Wi-fi Modem
106 Energy State
107 Digital Input for energy saving (ESS, Smart Grid)
108 2Way Valve
110 3Way Valve(A)
111 3Way Valve(B)
112 Electric Heater
118 Typical Installation Example
120 Final check
[Chapter 6]
121 CONFIGURATION
121 DIP Switch Setting
[Chapter 7]
131 SERVICE SETTING
131 How to enter service setting
131 Service setting

4
TABLE OF CONTENTS
ENGLISH
132 Service Contact
133 Model Information
134 RMC Version lnformation
135 Open Source License
[Chapter 8]
136 INSTALLER SETTING (For 3 Series)
136 How to enter installer setting
137 Installer setting (For 3 Series)
139 3 Minutes Delay
140 Select Temperature Sensor
141 Dry Contact Mode
142 Central Control Address
143 Pump test run
144 Air cooling set temp
145 Water cooling set temp
146 Air heating set temp
147 Water heating set temp
148 DHW set temp
149 Screed drying
151 Heater on temperature
153 Water supply off temp. during cooling
155 Tank disinfection setting 1, 2
156 Tank setting1
157 Tank setting2
159 Heater priority
160 DHW time setting
162 TH on/off Variable, heating air
163 TH on/off Variable, heating water
164 TH on/off Variable, cooling air
165 TH on/off Variable, cooling water
166 Heating temp. setting
167 Cooling temp. setting
168 Pump setting in heating
169 Pump setting. in cooling
170 Forced operation
171 CN_CC
172 Pump Capacity
173 Seasonal auto temp
175 Modbus Address
176 CN_EXT
177 Anti-freezing Temperature

5
TABLE OF CONTENTS
ENGLISH
178 Add Zone
179 Use External Pump
180 3rd Party Boiler
181 Meter Interface
182 Pump Prerun/Overrun
183 Solar Thermal System
185 Energy state
188 Data logging
189 Password Initialization
190 INSTALLER SETTING (For 4 Series)
193 Select Temperature Sensor
194 Use Heating Tank Heater
195 Mixing Circuit
197 Use External Pump
198 RMC master/slave
199 LG Therma V Configuration
200 Forced operation
201 Pump Prerun/Overrun
202 Water Flow Control
203 Energy Monitoring
204 Anti-Freezing Option 1
205 Password Reset
206 Screed drying
208 Heater on temperature
209 Air heating set temp.
210 Water heating set temp.
211 Hysteresis Room Air(Heating)
212 Hysteresis Heating Water
213 Heating temp. setting
214 Pump setting in heating
215 Air cooling set temp.
216 Water cooling set temp.
217 Water supply off temp. during cooling
219 Hysteresis Room Air(Cooling)
220 Hysteresis Cooling Water
221 Cooling temp. setting
222 Pump setting in cooling
223 Seasonal auto temp.
226 Heater priority
227 DHW set temp.
228 Tank disinfection setting 1, 2
229 Tank setting1

6
TABLE OF CONTENTS
ENGLISH
230 Tank setting2
232 DHW time setting
234 Recirculation time
235 Solar Thermal System
237 Pump test run
238 Frost Protection Temp.
239 Dry Contact Mode
240 Central Control Address
241 CN_CC
242 LG Therma V Configuration
243 Energy state
246 Thermostat control type
247 Pump operation time
248 IDU operation time
249 Modbus Address
250 Modbus gateway memory map
253 CN_EXT
254 3rd Party Boiler
255 Meter Interface
256 Current flow rate
257 Data logging
[Chapter 9]
258 COMMISSIONING
258 Check List before Starting Operation
259 Starting Operation
260 Starting Operation flow chart
260 Airborne Noise Emission
261 Vacuum & Charge of Refrigerant
263 How to drain remaining water in the product
264 Troubleshooting

7
PREFACE
ENGLISH
PREFACE
This installation manual is to present information and guide about understanding, installing,
and checking .
Your careful reading before installation is highly appreciated to make no mistake and to prevent
potential risks. The manual is divided into nine chapters. These chapters are classified according
to installation procedure. See the table below to get summarized information.
Chapters Contents
Chapter 1
• Warning and Caution concerned with safety.
• This chapter is directly related with human safety. We strongly recommend reading
this chapter carefully.
Chapter 2
• Items Inside product Box
• Before starting installation, please make it sure that all parts are found inside the
product box.
Chapter 3
• Fundamental knowledge about
• Model identification, accessories information, refrigerant and water cycle diagram,
parts and dimensions, electrical wiring diagrams, etc.
• This chapter is important to understand
Chapter 4
• Installation about the unit.
• Installation location, constraints on installation site, etc
• Electrical wiring at the unit.
• System set-up and configuration.
• Information about water pump
Chapter 5
• Information about supported accessories
• Specification, Constraints, and wiring are described.
• Before purchasing accessories, please find supported specification to buy proper
one.
Chapter 6 • Information about DIP switch setting
Chapter 7
• check and input service contact
• information about model and open source license
Chapter 8
• Information on the installer setup mode that sets the detailed functions of the
remote control
• Incorrectly setting the installer setup mode may result in product failure, personal
injury, or property loss, so this chapter requires a deeper understanding
Chapter 9
• Check points before starting operation are explained.
• Troubleshooting, maintenance, and error code list are presented to correct
problems

SAFETY INSTRUCTIONS
8
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 (for 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.
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.
SAFETY INSTRUCTIONS

9
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

10
SAFETY INSTRUCTIONS
ENGLISH
• Do not touch leaked refrigerant directly.
- There is risk of frostbite.
• Compliance with national gas regulations shall be observed.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• The installation of pipe-work shall be kept to a minimum.
• 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 authorizes
their competence to handle refrigerants safely in accordance
with an industry recognized assessment specification.
• Pipe-work shall be protected from physical damage and shall
not be installed in an unventilated space, if that space is
smaller than
1) The minimum floor area : 49.4 m2
2) The maximum refrigerant charge amount : 2.4 kg
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.
• Ducts connected to an appliance shall not contain an ignition
source.
• Copper in contact with refrigerants shall be oxygen-free or
deoxidized, for example Cu-DHP as specified in EN 12735-1
and EN 12735-2.

SAFETY INSTRUCTIONS
11
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 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.

12
SAFETY INSTRUCTIONS
ENGLISH
• Do not touch any electric part with wet hands. you should be
power off before touching electric part.
- There is risk of electric shock or fire.
• Do not touch refrigerant pipe and water pipe or any internal
parts while the unit is operating or immediately after operation.
- There is risk of burns or frostbite, personal injury.
• If you touch the pipe or internal parts, you should be wear
protection or wait time to return to normal temperature.
- Otherwise , it may cause burns or frostbite, personal injury.
• Turn the main power on 6 hours ago before the product
starting operation.
- Otherwise, it may cause compressor damage.
• Do not touch electric parts for 10 minutes after main power
off.
- There is risk of physical injury, electric shock.
• The inside heater of product may operate during stop mode. It
is intended to protect the product.
• Be careful that some part of the control box are hot.
- There is risk of physical injury or burns.
• When the unit is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not be poured to the unit directly.
- There is risk of fire, electric shock, or unit damage.
• Ventilate the unit from time to time when operating it together
with a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the unit.
- There is risk of electric shock.
• Take care to ensure that nobody could step on or fall onto the
unit.
- This could result in personal injury and unit damage.
• For installation, always contact the dealer or an Authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.

13
SAFETY INSTRUCTIONS
ENGLISH
• 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).
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of
other skilled personnel shall be carried out under the supervision of
the person competent in the use of flammable refrigerants.
• When mechanical connectors are reused indoors, sealing parts
shall be renewed. When flared joints are reused indoors, the
flare part shall be re-fabricated.
• Be aware that refrigerants may not contain an odor.
• Periodic(more than once/year) cleaning of the dust or salt
particles stuck on the heat exchangers by using water.
• Keep any required ventilation openings clear of obstruction.
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or
repair of unit.
- Low refrigerant levels may cause failure of unit.
• Keep level even when installing the unit.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the unit.
- Avoid personal injury.
• Do not install the unit in potentially explosive atmospheres.
!

14
SAFETY INSTRUCTIONS
ENGLISH
• Connect the water for filling or refilling the heating system as
specified by EN 1717/EN 61770 to avoid contamination of
drinking water by return flow.
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.
• 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.

15
SAFETY INSTRUCTIONS
ENGLISH
• 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.

16
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.
*The parts can be found inside the outdoor unit by opening the side panel.
INSTALLATION PART
Item Image
Installation
Manual
Outdoor Unit
UN36A Chassis
(Product heating capacity :
5, 7, 9 kW)
Outdoor Unit
UN60A Chassis
(Product heating capacity :
9, 12, 14, 16 kW)
Remote Controller
Remote Controller Cable
(Default length : 10 m)
Damper (x 6)
Drain Cap (x 6)
Drain Nipple

17
GENERAL INFORMATION
ENGLISH
Model Information
Buyer Model Name
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 No.
1234567
Monobloc ZH B W 09 6 A 0
Factory Model Name
No. Signification
1 Air-to-Water-Heat Pump for R32
2Classification
- B : Monobloc
3Model Type
- W : Inverter Heat Pump
4Heating Capacity
- E.g) 9 kW →'09'
5
Electrical ratings
- 6 : 1 phase 220-240 V~ 50 Hz
- 8 : 3 phase 380-415 V~ 50 Hz
6Function
- A : General heating heat pump
7 Series Number
Refrigerant
No.
123457 8
R32 H M 09 1 M U3 3
No. Signification
1 Air-to-Water-Heat Pump
2Classification
- M : Monobloc
3Heating Capacity
- E.g) 9 kW →'09'
4
Electrical ratings
- 6 : 1 phase 220-240 V~ 50 Hz
- 8 : 3 phase 380-415 V~ 50 Hz
5Leaving Water Combination
- M : Middle Temperature
6
Chassis Name
- U3 : UN60A Chassis
- U4 : UN36A Chassis
7 Series Number
- For 3 Series

18
GENERAL INFORMATION
ENGLISH
Refrigerant No.
12345678
R32 H M 09 1 M R U3 4
No. Signification
1 Air-to-Water-Heat Pump
2Classification
- M : Monobloc
3Heating Capacity
- E.g) 9 kW →'09'
4
Electrical ratings
- 6 : 1 phase 220-240 V~ 50 Hz
- 8 : 3 phase 380-415 V~ 50 Hz
5Leaving Water Combination
- M : Middle Temperature
6Refrigerant
- R : R32
7
Chassis Name
- U3 : UN60A Chassis
- U4 : UN36A Chassis
8 Series Number
Refrigerant
No.
123456789
R32 H M 09 1 M R S U3 3
No. Signification
1 Air-to-Water-Heat Pump
2Classification
- M : Monobloc
3Heating Capacity
- E.g) 9 kW →'09'
4
Electrical ratings
- 6 : 1 phase 220-240 V~ 50 Hz
- 8 : 3 phase 380-415 V~ 50 Hz
5Leaving Water Combination
- M : Middle Temperature
6Refrigerant
- R : R32
7Function
- S : Silent
8
Chassis Name
- U3 : UN60A Chassis
- U4 : UN36A Chassis
9 Series Number
- Additional Information : Serial number refers to the barcode on the product.
- Max allowable pressure High side : 4.32 MPa / Low side : 2.4 MPa
[Operating condition]
-
Maximum operating temperature of water : 65 °C
- Minimum operating temperature of water : 15 °C
- Maximum inlet water pressure : 0.3 MPa
- Minimum inlet water pressure : 0.03 MPa
Check the model information based on the buyer model series number.
(e.g., geometry, cycle, etc.)
- For 3 Series - For 4 Series

19
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 Capacity (kW) Power Source
(Unit)
Chassis Phase(Ø) Capacity(kW) Heating1) Cooling2)
UN36A 1
5 5.5 5.5
220-240 V~
50 Hz
777
999
UN60A
1
999
12 12 12
14 14 14
16 16 16
3
12 12 12 380-415 V 3N~
50 Hz
14 14 14
16 16 16

20
GENERAL INFORMATION
ENGLISH
Parts and Dimensions
- For 3 Series
5
2
4
7
8
1
13
14
12
9
10
11
3
6
1239
6 holes for Ancher Bolts (M10)
3-ID Ø 20 holes for drain connection
390 330
475 360
620
696
292
112
277
416
41
163 163293
297
336
3D View
Side View
24
834
491
443
395
347
243
156
hThe shape may differ depending on the model.
UN36A (5, 7, 9 kW)
(Unit : mm)