LG Therma V HM091MRS Installation Manual

Air-to-water heat pump

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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

[EU 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

MFL68026607

Rev.08_042221

www.lg.com

Table of Contents

Summary of Contents for LG Therma V HM091MRS

Page 1 Original instruction [EU 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 www.lg.com...
Page 2: Table Of Contents
Water pump Capacity Pressure Drop Performance curve Water Quality Frost protection Water Volume and Expansion Vessel Pressure ACCESSORIES INSTALLATION Accessories supported by LG Electronics Accessories supported by 3rd party Companies Before Installation Thermostat 2nd Circuit 3rd Party Boiler 3rd Party Controller...
Page 3: Table Of Contents
TABLE OF CONTENTS SERVICE SETTING How to enter service setting Service setting Service Contact Model Information RMC Version lnformation Open Source License INSTALLER SETTING How to enter installer setting Installer setting 3 Minutes Delay Select Temperature Sensor Dry Contact Mode Central Control Address Pump test run Air cooling set temp...
Page 4: Preface
PREFACE 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.
Page 5: Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS Read the precautions in This appliance is filled this manual carefully with flammable before operating the refrigerant (for R32) unit. This symbol indicates This symbol indicates that a service personnel that the Operation should be handling this Manual should be read equipment with carefully.
Page 6 SAFETY INSTRUCTIONS • 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 •...
Page 7 SAFETY INSTRUCTIONS • 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.
Page 8 SAFETY INSTRUCTIONS • 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. •...
Page 9 SAFETY INSTRUCTIONS • 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.
Page 10 SAFETY INSTRUCTIONS • 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.
Page 11 SAFETY INSTRUCTIONS • 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.
Page 12: Installation Part
INSTALLATION PART 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 Installation Manual Outdoor Unit UN36A Chassis (Product heating capacity :...
Page 13: General Information
GENERAL INFORMATION 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.
Page 14: Model Name And Related Information
GENERAL INFORMATION Model name and related information Model Name Capacity (kW) Power Source (Unit) Chassis Phase(Ø) Capacity(kW) Heating Cooling UN36A 220-240 V~ 50 Hz UN60A 380-415 V 3N~ 50 Hz 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 ’...
Page 15: Parts And Dimensions
GENERAL INFORMATION Parts and Dimensions UN36A (5, 7, 9 kW) h The shape may differ depending on the model. Description Name Remarks Entering water pipe Male PT 1 inch Leaving water pipe Male PT 1 inch Strainer Filtering and stacking particles inside circulating water Top cover Control Box PCB and terminal blocks...
Page 16 GENERAL INFORMATION UN60A (9, 12, 14, 16 kW) 3D View Side View h The shape may differ depending on the model.
Page 17 GENERAL INFORMATION Name Remarks Entering water pipe Male PT 1 inch Leaving water pipe Male PT 1 inch Strainer Filtering and stacking particles inside circulating water Top cover Front Panel Side Panel Signal A Network Kit cables Signal B Network Kit cables Signal C Outdoor Entry Power Cable Water Pump...
Page 18: Control Parts
GENERAL INFORMATION Control Parts Control box before structural change (Until August, 2020) UN36A (5, 7, 9 kW) UN60A (9, 12, 14, 16 kW) Control box after structural change (From September, 2020) h The shape may differ depending on the model. Refer to “Exploded View” in SVC Manual. Description Name Remark...
Page 19 GENERAL INFORMATION Control box before structural change (Until January, 2021) UN36A (5, 7, 9 kW) Control box after structural change (From February, 2021) h The shape may differ depending on the model. Refer to “Exploded View” in SVC Manual. Description Name Remark Terminal blocks...
Page 20: Remote Controller
GENERAL INFORMATION Remote Controller Operation display window Back button 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...
Page 21: Typical Installation Example
GENERAL INFORMATION Typical Installation Example CAUTION is installed with pre-existing boiler, the boiler and should not be operated together. If entering water temperature of is above 55 °C, the system will stop operation to prevent mechanical damage of the product. For detailed electric wiring and water piping, please contact authorized installer.
Page 22 GENERAL INFORMATION CASE 2: Connecting DHW Tank Outdoor Indoor M / F Hot water Fan coil unit Floor heating loop Radiator tank tank tank City water NOTE • DHW tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.
Page 23 GENERAL INFORMATION CASE 3: Connecting Solar thermal system Outdoor Indoor M / F Solar heat source Hot water Fan coil unit Floor heating loop Radiator tank City water NOTE • DHW tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.
Page 24 GENERAL INFORMATION CASE 4: Connecting 2 Circuit [Room A] Main Zone zone (Low Temp.) circuit temp. sensor Outdoor Indoor Mix Kit Floor heating loop Floor heating loop Buffer Tank M / F [Room B] Additional zone (High Temp.) Radiator Radiator NOTE •...
Page 25 GENERAL INFORMATION CASE 5: Connecting 3 Party 3 Way V/V direction Boiler On : Boiler Off : Outdoor Indoor Boiler Buffer Tank M / F Floor Floor Floor heating loop heating loop heating loop NOTE • DHW tank - 3rd Party Boiler - You can control the boiler automatically and manually by comparing the outside temperature and the set temperature.
Page 26 GENERAL INFORMATION CASE 6 : Connecting backup heater Outdoor Indoor Buffer Tank Floor heating Floor heating Floor heating loop loop loop NOTE • Backup heater(Accessory) - You can retain sufficient capacity even though ambient temperature will be decreased in winter. Room Thermostat High Temperature Shut-off valve...
Page 27: Cycle Diagram
GENERAL INFORMATION Cycle Diagram UN60A (12, 14, 16 kW) <Refrigerant Side> <Water Side> : Cooling : Heating High Air Vent Pressure Pressure Sensor Switch Backup Heater Mufﬂer Accessory Accumulator Expansion Tank Relief Water valve Pressure Gage Air Vent EEV1 EEV2 IHEX [PHE] Water...
Page 28 GENERAL INFORMATION UN60A (1Ø : 9 kW) <Refrigerant Side> <Water Side> : Cooling : Heating High Pressure Air Vent Sensor Pressure Switch Backup Mufﬂer Heater Accumulator Accessory Relief EEV1 Expansion Tank valve Water Pressure Gage Air Vent EEV3 (Inj.EEV) Water [PHE] W/Pump Strainer Flow...
Page 29: Water Cycle
GENERAL INFORMATION Water cycle...
Page 30 - This system can include following components : SOLAR Solar panel, Sensors, Thermostats, Interim heat party accessory and Field installation (sold THERMAL exchanger, Water pump, etc. (no connector) separately) - To utilized hot water heated by SOLAR THERMAL SYSTEM SYSTEM, end-user must by LG AWHP Solar-Kit.
Page 31: Installation
INSTALLATION 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. •...
Page 32: Installation Places
INSTALLATION Installation places - If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted. - Ensure that the spaces indicated by arrows around front, back and side of the unit. - Do not place animals and plants in the path of the warm air.
Page 33: Seasonal Wind And Cautions In Winter
INSTALLATION Installation at Seaside CAUTION • Unit should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the unit where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the unit.
Page 34: Foundation For Installation
INSTALLATION Foundation for Installation • 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 6sets of M12 foundation bolts, nuts and washers each which are available on the market.) •...
Page 35: Electrical Wiring
INSTALLATION Electrical Wiring • Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. WARNING • Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual.
Page 36 INSTALLATION CAUTION The power cable connected to the unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cable set complying with the national regulation. Pipes and wires should be purchased separately for installation of the product. Select a circuit breaker and power cable suitable for the current specification.
Page 37 INSTALLATION Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal 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.
Page 38 INSTALLATION Point for attention regarding quality of the public electric power supply 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.
Page 39 INSTALLATION 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 appliance. • Use a recognized ELCB(Electric Leakage Circuit Breaker) between the power source and the unit.
Page 40 INSTALLATION Wiring procedure for power cable This cable is generally connected between external power source (such as main electric power distribution panel of user's house) and the unit. Before starting wiring, check if wire specification is suitable and read following directions and cautions VERY carefully. CAUTION After checking and confirming following conditions, start wiring work.
Page 41 INSTALLATION Step 2. Connect power cable to main power terminal See below figure for detailed information. When connecting earth cable, the diameter of cable should be refer to the below table. The earth cable is connected to the Control box case where earth symbol is marked.
Page 42 INSTALLATION Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (220-240 V~) - N : Neutral (220-240 V~) - BR : Brown, WH : White, BL : Blue, BK : Black Case 1 Case 2 Terminal Block 1 Terminal Block 1...
Page 43: Wiring Of Main Power Supply And Equipment Capacity
INSTALLATION Wiring of main power supply and equipment capacity 1. Use a separate unit power and heater power. 2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections. 3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker taking into account the line voltage drops.
Page 44: Water Piping And Water Circuit Connection
INSTALLATION Water Piping and Water Circuit Connection CAUTION 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.
Page 45 INSTALLATION When the water pipes are connected. It must be tightened the nut with two wrench. Otherwise pipes can be deformed. Water Out Union Water In WARNING Installing shut-off valve • While assembling two shut-off valves, pop sound will be heard when valve is open or close by rotating handles.
Page 46: Water Charging
INSTALLATION 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 unit, but also in the under floor water circuit, DHW water tank circuit, FCU water circuit, and any other water circuits controlled by the product.
Page 47: Water Pump Capacity
INSTALLATION Water pump Capacity The water pump us variable type which is capable to change flow rate, so it may be required to change default water pump capacity in case of noise by water flow. In most case, however, it is strongly recommended to set capacity as Maximum.
Page 48: Performance Curve
INSTALLATION Performance curve MGQ62321901 : UPML GEO 20 - 105 CHBL UN60A (12, 14, 16 kW) MGQ62321902 : UPM3K GEO 20 - 75 CHBL UN36A (5, 7, 9 kW), UN60A (9 kW) Performance test based on standard ISO 9906 with pre-pressure 2.0 bar and liquid temperature 20 °C.
Page 49: Water Quality
INSTALLATION 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.
Page 50: Water Volume And Expansion Vessel Pressure
INSTALLATION Water Volume and Expansion Vessel Pressure Inside expansion vessel is included which is 8 liter capacity with 1 bar pre-pressure. That means, according to the volume-pressure graph, total water volume of 230 liter is supported as default. If total water volume is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation.
Page 51: Accessories Installation
In this chapter, specifications about supported 3rd party accessories and how to connect to is introduced. It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG Electronics, please refer to installation manual of each accessories. Accessories supported by LG Electronics Item Purpose...
Page 52 ACCESSORIES INSTALLATION Accessories supported by 3 party Companies Item Purpose Specification To generate auxiliary heating energy • Solar collector Solar Heating System for water tank • 3way valve(B) • Mixing valve Mix Kit To use 2nd Circuit • Mix pump 3rd Party Boiler To use auxiliary boiler.
Page 53: Before Installation
ACCESSORIES INSTALLATION Before Installation WARNING Followings should be kept before installation • Main power must be turned off during installing 3rd party accessories. • 3rd party accessories should be comply with supported specification. • Proper tools should be chosen for installation. •...
Page 54 ACCESSORIES INSTALLATION General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only Mechanical 230 V~ Heating / Cooling Heating Only Electrical 230 V~ Heating / Cooling 1. There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
Page 55 ACCESSORIES INSTALLATION How to wire thermostat Follow below procedures Step 1 ~ Step 5. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3.
Page 56: 2Nd Circuit
ACCESSORIES INSTALLATION 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. Circuit The 2nd circuit is generally used to control the temperature of 2 rooms differently.
Page 57 ACCESSORIES INSTALLATION How to Wire 2nd Circuit Follow below procedures Step 1 ~ Step 2. Step 1. Uncover front cover of the unit. Step 2. Find terminal block and connect wire as below (L) : Live signal from PCB to mix pump (N) : Neutral signal from PCB to mix pump (L1) : Live signal (for Normal* Closed type) from PCB to MIXING VALVE...
Page 58 ACCESSORIES INSTALLATION NOTE Temperature sensor specification: Type : Thermistor,NTC Resistance at 25 °C : 5 kΩ Minimum operating temperature range : -30 °C~100 °C [Thermistor for 2 circuit] Sensor Sensor Holder Sensor Connector Follow below procedures step 1 ~ step 4. Step 1.
Page 59: 3Rd Party Boiler
ACCESSORIES INSTALLATION 3rd Party Boiler The product can be used by connecting an Auxiliary boiler. You can control the boiler automatically and manually by comparing the outside temperature and the set temperature. How to install 3rd party boiler Follow below procedures step 1 ~ step 3. Step 1.
Page 60: 3Rd Party Controller
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 3 party controller Follow below procedures step 1 ~ step 4.
Page 61: Meter Interface
ACCESSORIES INSTALLATION Meter Interface This product can be used by connecting the meter interface module supplied in the field. The meter interface module can communicate with the wired remote controller. The meter interface module lets you know the amount of power generated by the product. How to install Meter Interface [Parts of Meter interface] Meter interface body...
Page 62: Central Controller
ACCESSORIES INSTALLATION Central Controller 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.
Page 63: Remote Controller
ACCESSORIES INSTALLATION Remote Controller Installation of Remote Controller • After fixing the remote controller installation plate on the desired location, fix it firmly with the provided screws. - If the installation plate is not flat on the surface, it may result in the controller being twisted and cause a defect.
Page 64 ACCESSORIES INSTALLATION • When you remove the remote controller from the installation plate, insert a small flat head screwdriver into the bottom side separation hole and turn clockwise to separate the remote controller. - There are 2 separation holes at the bottom part. Slowly separate one by one. - Be careful not to damage the internal parts during the removal.
Page 65 ACCESSORIES INSTALLATION Extension Cable Indoor MAIN PCB Wired controller Indoor terminal block RED(12V) YL(SIGNAL) BR(GND) Check whether the connector Check whether the connector is connected correctly. is connected correctly. Cable connection method to use external device 1) Wired remote controller-cable connection method. - In the wired remote controller, connect the part marked in the following figure (J02C, DO- Port) to the cable.
Page 66: Dhw Tank
ACCESSORIES INSTALLATION 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 DHW water tank requires following considerations : •...
Page 67 ACCESSORIES INSTALLATION WARNING Installing recirculation pump When is used with DHW tank, it is STRONGLY recommended to install recirculation pump to prevent flooding out cold water at the end of hot water supply and to stabilize the water temperature inside DHW tank - The recirculation pump should be operated when DHW demand is not required.
Page 68 ACCESSORIES INSTALLATION How to Wire DHW Tank Heater Step 1. Uncover heater cover of the DHW tank. It is located side of the tank. Step 2. Find terminal block and connect wires as below. Wires are field-supplied item. (L) : Live signal from PCB to Heater (N) : Neutral signal from PCB to Heater WARNING Wire specification...
Page 69: Dhw Tank Kit
ACCESSORIES INSTALLATION DHW Tank Kit This product can be used by connecting the DHW tank kit in the field. It can be utilized hot water heated by booster heater in DHW tank. How to install DHW tank kit [Parts of DHW Tank Kit] Tank kit body Sensor Multi harness...
Page 70: Solar Thermal Kit
Solar Thermal Kit This product can be used by connecting the solar thermal kit in the field. It can be utilized hot water heated by solar thermal system. End-user must be LG AWHP solar thermal kit. How to Install Solar Thermal Kit...
Page 71: Dry Contact
ACCESSORIES INSTALLATION Dry Contact 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...
Page 72 ACCESSORIES INSTALLATION [Setting of Contact Signal Input] • For input contact closure only(No power 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.
Page 73: External Controller - Setting Up Programmable Digital Input Operation
ACCESSORIES INSTALLATION External Controller - Setting up programmable digital input operation 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.
Page 74: Remote Temperature Sensor
ACCESSORIES INSTALLATION Remote Temperature Sensor Remote temperature sensor can be installed any place a user wants to detect the temperature. 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.
Page 75 ACCESSORIES INSTALLATION CN_ROOM Fixing screws 60 mm Sensor Indoor PCB [fig. 1] [fig. 2] Fixing the Step 6. Integrate the remote temperature sensor with the screws Remote Sensor as the order of arrows. CAUTION • Choose the place where the average temperature can be measured for the unit operates. •...
Page 76: Solar Pump
ACCESSORIES INSTALLATION Solar pump Solar pump can be required to energize water flow when solar thermal system is installed. How to install solar pump Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2.
Page 77: External Pump
ACCESSORIES INSTALLATION External pump External pump can be required when the room to take floor heating is too large or not well- insulated.(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.
Page 78: Wi-Fi Modem
ACCESSORIES INSTALLATION Wi-ﬁ Modem 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.
Page 79: Energy State
ACCESSORIES INSTALLATION Energy State This product provides energy states that enable customers to use as much as possible of their own renewable energy. It can shift setpoints depending on input signal from Energy Storage System (ESS) or from any other third-party device using Modbus RTU or Digital 230V inputs. Available Energy States There are 8 energy states available.
Page 80: Digital Input For Energy Saving (Ess, Smart Grid)
ACCESSORIES INSTALLATION Digital Input for energy saving (ESS, Smart Grid) This product provides two digital inputs (TB_SG1 / TB_SG2) that can be used to switch between energy states when not using Modbus RTU (CN-COM). Available Energy States There are 8 energy states available in total. Four different states can be triggered using the 230V-inputs –...
Page 81: 2Way Valve
ACCESSORIES INSTALLATION 2Way Valve 2way valve is required to control water flow while cooling operation. Role of 2way valve is to cut off water flow into under floor loop in cooling mode when fan coil unit is equipped for cooling operation.
Page 82: 3Way Valve(A)
ACCESSORIES INSTALLATION 3Way Valve(A) 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 3 party boiler. General Information supports following 3way valve.
Page 83: 3Way Valve(B)
ACCESSORIES INSTALLATION 3Way Valve(B) 3way valve(B) is required to operate Solar thermal system. Role of 3way valve is flow switching between open and close mode of the solar circuit. General Information supports following 3way valve. Type Power Operating Mode Supported Selecting Flow A between SPDT...
Page 84: Electric Heater
ACCESSORIES INSTALLATION Electric Heater How to Pipe Electric Heater Follow below procedures Step 1 ~ Step 4. Step 1. Uncover the electric heater accessory. Step 2. Check the diameter of pre-installed pipes of unit. Step 3. If the diameter of pre-installed pipes is different from diameter of electric heater accessory kit, it is necessary to reduce or expand pipe's diameter.
Page 85 ACCESSORIES INSTALLATION Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (220-240 V~) - N : Neutral (220-240 V~) - BR : Brown, WH : White, BL : Blue, BK : Black <...
Page 86 ACCESSORIES INSTALLATION How to Wire Electric Heater Follow below procedures Step 1 ~ Step 4. Step 1. Uncover the electric heater accessory. Step 2. Find the terminal block and connect wires. Refer to the installation manual of the electric heater. (Wires are field-supplied item.) Step 3.
Page 87 ACCESSORIES INSTALLATION How to Install 3way Valve for Backup Heater Bypass 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. When Tightening the connect wire on terminal block, Be careful to prevent a shock or injury. (230 VAC) WARNING 2WAY VALVE...
Page 88: Final Check
ACCESSORIES INSTALLATION Final check Check point Description - Check if the shut-off valves should be assembled with Connection of Water Water inlet and outlet pipe of the unit Inlet/Outlet - Check the location of the water inlet/outlet water pipe - Check the pressure of supplying water by using pressure gage inside the unit Hydraulic pressure - Pressure of Supplying water should be Under 3.0 bar...
Page 89: Configuration
CONFIGURATION CONFIGURATION 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 •...
Page 90 CONFIGURATION DIP Switch Information Option Switch 2 Description Description Setting Setting Default Default As Master Role when central controller is equipped As Slave Unit + Outdoor unit is installed Unit + Outdoor unit + DHW tank Accessory installation is installed information Unit + Outdoor unit + DHW tank...
Page 91 Description Setting Default CONFIGURATION Option Switch 1 Description Description Setting Setting Default Default As Master MODBUS As Slave Common 3 party MODBUS Function SIEMENS Option Switch 3 Description Description Setting Setting Default Default Remote sensor is not installed Remote Air Sensor Remote sensor is installed Antifreezing solution not using mode ANTIFREEZE...
Page 92 CONFIGURATION Outdoor PCB General Information OFF is selected ON is selected DIP Switch Information Description Setting Default Normal Low Noise Mode Low Noise Mode Limited Low Noise Mode Max Mode Peak Control Peak Control : To limit maximum current (Power saving) h Only DIP Switch no.
Page 93 CONFIGURATION 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.
Page 94 CONFIGURATION 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.
Page 95: Service Setting
SERVICE SETTING 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.
Page 96: Service Setting
SERVICE SETTING Service Contact Check and input the service center phone number that you can call when there is service issue. • In the service setting list, select the service contact point and press [OK] button to move to the detail screen.
Page 97: Model Information
SERVICE SETTING 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.
Page 98: Rmc Version Lnformation
SERVICE SETTING RMC Version lnformation View the remote controller software version. • In the service setting list, select the RMC version information and press [OK] button to move to the detail screen...
Page 99: Open Source License
SERVICE SETTING 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.
Page 100: Installer Setting
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 warranty. • 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.
Page 101: Installer Setting
INSTALLER SETTING Installer setting • You can set the product user functions. • Some functions may not be displayed/operated in some product types. Function Description 3 Minutes Delay Factory use only Selection for setting temperature as air temperature or leaving water Select Temperature Sensor temperature or air+leaving water temperature Dry contact function is the function that can be used only when the...
Page 102 INSTALLER SETTING Function Description TH on/off Variable, cooling air Cooling air temperature TH On / Off Type setting TH on/off Variable, cooling Cooling Water Outlet Temperature TH On / Off Type Water At the leaving water control in heating mode, the control reference Heating temp.
Page 103 INSTALLER SETTING 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.
Page 104: Select Temperature Sensor
INSTALLER SETTING Select Temperature Sensor The product can be operated according to air temperature or leaving water temperature. The selection for setting temperature as air temperature or leaving water temperature is determined. • In the installer setting list, Select Temperature Sensor category, and press [OK] button to move to the detail screen.
Page 105: Dry Contact Mode
INSTALLER SETTING 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.
Page 106: Central Control Address
INSTALLER SETTING Central Control Address When connecting the central control, set the central control address of the unit. • In the installer setting list, select Central Control Address category, and press [OK] button to move to the detail screen. NOTE Enter address code as hexadecimal value Front: Central Control Gr.
Page 107: Pump Test Run
INSTALLER SETTING 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.
Page 108: Air Cooling Set Temp
INSTALLER SETTING Air cooling set temp Determine cooling setting temperature range when air temperature is selected as setting temperature. • In the installer setting list, select Air cooling set temp category, and press [OK] button to move to the detail screen. Value Default Range...
Page 109: Water Cooling Set Temp
INSTALLER SETTING Water cooling set temp Determine cooling setting temperature range when leaving water temperature is selected as setting temperature. • In the installer setting list, select water cooling set temp category, and press [OK] button to move to the detail screen. Value Default Range...
Page 110: Air Heating Set Temp
INSTALLER SETTING Air heating set temp Determine heating setting temperature range when air temperature is selected as setting temperature • In the installer setting list, select Air heating set temp. category, and press [OK] button to move to the detail screen. Value Default Range...
Page 111: Water Heating Set Temp
INSTALLER SETTING 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. Value Default Range...
Page 112: Dhw Set Temp
INSTALLER SETTING DHW set temp Determine heating setting temperature range when DHW temperature is selected as setting temperature • In the installer setting list, select DHW set temp. category, and press [OK] button to move to the detail screen. Value Range Max.
Page 113: Screed Drying
INSTALLER SETTING Screed drying This function is a unique feature of AWHP that, when AWHP is installed in a new concrete structure, controls the specific temperature floor heating out temperature for a certain period of time to cure the floor cement. •...
Page 114 INSTALLER SETTING NOTE • During Screed drying operation, button input except for installer function and temperature display is restricted. • When the power is applied again after a power outage during product operation, the product operation state before power failure is remembered and the product is automatically operated.
Page 115: Heater On Temperature
INSTALLER SETTING Heater on temperature Depending on local climatic conditions, it is necessary to change the temperature condition in which electric heater turns on / off. • In the installer setting list, Heater on temperature category, and press [OK] button to move to the detail screen.
Page 116 INSTALLER SETTING NOTE • Heater on temperature Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-ON’ : - Example : If Heater on temperature is set as ‘-1’ and DIP switch No 6. and 7 is set as ‘OFF-ON’, then half capacity of electric heater will start operation when outdoor air temperature is below -1 °C and current leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air temperature.
Page 117: Water Supply Off Temp. During Cooling
INSTALLER SETTING Water supply off temp. during cooling Determine leaving water temperature when the unit is turned off. This function is used for preventing condensation on the floor in cooling mode • In the installer setting list, select Water supply off temp. during cooling category, and press [OK] button to move to the detail screen.
Page 118 INSTALLER SETTING - Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed. - FCU : determines if FCU is installed or not. - Example : If Stop temp. is set as ‘10’ and FCU is ’Use’ and actually FCU is NOT installed in the water loop, the unit stop operation in cooling mode when the leaving water temperature is below 10 °C.
Page 119: Tank Disinfection Setting
INSTALLER SETTING Tank disinfection setting 1, 2 • Disinfection operation is special DHW tank operation mode to kill and to prevent growth of legionella 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.
Page 120: Tank Setting 1
INSTALLER SETTING Tank setting 1 • In the installer setting list, select tank setting 1 category, and press [OK] button to move to the detail screen. Value Range Max outdoor temp 58~40 Min temp 30~1...
Page 121: Tank Setting 2
INSTALLER SETTING Tank setting 2 • In the installer setting list, select tank setting 2 category, and press [OK] button to move to the detail screen. Value Range Hysteresis Heating priority Floor heating / DHW...
Page 122 INSTALLER SETTING • 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….
Page 123: Heater Priority
INSTALLER SETTING Heater priority - Heater priority : determine electric heater and DHW tank heater on and off. - Example : If Heater priority is set as ‘Main+Boost heater ON’, then electric heater and DHW tank heater are on and off according to control logic. If Heater priority is set as ‘Boost heater only ON’, then electric heater is never turned on and only DHW tank heater is on and off according to control logic.
Page 124: Dhw Time Setting
INSTALLER SETTING 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.
Page 125: Th On/Off Variable, Heating Air
INSTALLER SETTING TH on/off Variable, heating air 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. Description Value TH On...
Page 126: Th On/Off Variable, Heating Water
INSTALLER SETTING 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. Description Value TH On...
Page 127: Th On/Off Variable, Cooling Air
INSTALLER SETTING TH on/off Variable, cooling air It is a function to adjust the cooling air temperature Thermal On / Off temperature according to the field environment in preparation for cooling or cooling claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 128: Th On/Off Variable, Cooling Water
INSTALLER SETTING TH on/off Variable, cooling water It is a function to adjust the cooling water temperature Thermal On / Off temperature according to the field environment in preparation for cooling or cooling claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 129: Heating Temp. Setting
INSTALLER SETTING Heating temp. setting • 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 Value Outlet (Default) Inlet...
Page 130: Cooling Temp. Setting
INSTALLER SETTING Cooling temp. setting • At the leaving water control in cooling 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 Value Outlet (Default) Inlet...
Page 131: Pump Setting In Heating
INSTALLER SETTING 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 •...
Page 132: Pump Setting. In Cooling
INSTALLER SETTING Pump setting. in cooling • It is a function to help the water pump's mechanical life by putting the water pump's rest time • installer setting function to set water pump operation / delay time option in cooling mode •...
Page 133: Forced Operation
INSTALLER SETTING Forced operation • 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 •...
Page 134: Cn_Cc
INSTALLER SETTING 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 When power is applied to the product, the unit when the contact point D/C Automatic is on in Dry Contact installed state recognizes Dry Contact installation D/C Not Installed Do not use (install) Dry Contact...
Page 135: Pump Capacity
INSTALLER SETTING Pump Capacity It is a function to enable installer to control Pump capacity application model. • In the installer setting list, select Pump Capacity category, and press [OK] button to move to the detail screen. • △T Control - This function automatically adjusts the pump capacity during heating operation.
Page 136: Seasonal Auto Temp
INSTALLER SETTING Seasonal auto temp It is the function to set the operation reference value in Seasonal Auto mode. • In the installer setting list, select Seasonal auto temp category, and press [OK] button to move to the detail screen. Range Function Description...
Page 137 INSTALLER SETTING - Setting range: Celsius - Seasonal Auto Driving mode: Heating, Heating & Cooling, Air-conditioning * If heating mode is selected, heating & cooling or cooling can not be selected. - Depending on the air / outflow control selection value, the water / air related setting value is displayed on the screen.
Page 138: Modbus Address
INSTALLER SETTING Modbus Address It is function to set the address of the Modbus device that is externally linked to the product. Modbus address setting function is available from indoor unit. • In the installer setting list, select Modbus Address , and press [OK] button to move to the detail screen.
Page 139: Cn_Ext
INSTALLER SETTING CN_EXT It is a function to control external input and output according to DI type set by customer using CN-EXT Port. • In the installer setting list, select CN-EXT Port category, and press [OK] button to move to the detail screen.
Page 140: Anti-Freezing Temperature
INSTALLER SETTING Anti-freezing Temperature Anti-freeze temperature setting is available in installer mode. It prevents frostbite from happening In the range of -25 to -5 degree celsius. • Change setting values using [<, >(left/right)] button NOTE To use this function, the antifreeze short pin(CN_FLOW2, Black) of indoor PCB must be remove and switch No.2 in option SW 3 must be on.
Page 141: Add Zone
INSTALLER SETTING Add Zone Function to set whether or not to use a installed 2nd circuit function using mixing kit. You can set valve closing time[seconds] and hysteresis temperature[ °C] on screen by yourself. Activating this function, It allows 2 zones(Room1, Room2) temperature to be controlled, separately.
Page 142: Use External Pump
INSTALLER SETTING 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. • Heating/Cooling You can use this feature when you have installed a 3 Way valve to switch the water flow between the underfloor and the water tank.
Page 143 INSTALLER SETTING Party Boiler This function is to configure the 3rd party boiler to be controlled. If the status of this function is “Use”, you can choose control mode of boiler, Auto or Manual. If the mode of this function is set to “Manual”, you can set temperature of the boiler and hysteresis, respectively.
Page 144: Meter Interface
INSTALLER SETTING Meter Interface It is the function that can check the status of energy and power on screen. It collects and calculates power or calorie data to create data for energy monitoring and energy warning alarm pop-ups. This function can be activated in installer mode. There are 2 options, modbus address and unit, in this function.
Page 145: Pump Prerun/Overrun
INSTALLER SETTING Pump Prerun/Overrun 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 Value Default...
Page 146: Solar Thermal System
INSTALLER SETTING Solar Thermal System It is function to set operation reference value in Solar Thermal System. In the installer setting list, select Solar thermal system category, and press [OK] button to move to the detail screen. NOTE To use this function, switch No.2 of option switch 2 must be turned ON and No.3 of option switch 2 must be turned OFF.
Page 147 INSTALLER SETTING Descriptions for each parameters are as following. • Solar collector set temp - Min temp : It is the minimum solar collector temperature at which the solar thermal system can operate. - Max temp : It is the maximum solar collector temperature at which the solar thermal system can operate •...
Page 148: Energy State
INSTALLER SETTING Energy state This function is to control the product according to the energy state. When the charged state of ESS is transmitted, it changes the target temperature of heating, cooling and DHW by setting value according to energy state. Select either Signal Mode or Modbus Mode according to the connection type between the product and the ESS.
Page 149: Data Logging
INSTALLER SETTING 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. 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...
Page 150: Password Initialization
INSTALLER SETTING Password Initialization 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. •...
Page 151: Overview Settings
INSTALLER SETTING Overview settings Menu Structure Menu Sub function ............96 Service Contact ............97 Model information ............98 RMC Version Information ............99 Open Source License Installer .............103 3 Minutes Delay .............104 Select Temperature Sensor .............105 Dry Contact Mode .............106 Central Control Address .............107 Pump test run .............108...
Page 152 INSTALLER SETTING .............127 TH on/off Variable, cooling air .............128 TH on/off Variable, cooling water .............129 Heating temp. setting .............130 Cooling temp. setting .............131 Pump setting in heating .............132 Pump setting. in cooling .............133 Forced operation .............134 CN_CC .............135 Pump Capacity .............136 Seasonal auto temp .............138...
Page 153: Commissioning
Product Installation • Refrigerant leakage degrades the performance. If leakage found, Refrigerant leakage contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the Drainage treatment bottom of the unit. In this case, prepare drainage treatment (for...
Page 154: Starting Operation
COMMISSIONING 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 Category Item Check Point •...
Page 155: Starting Operation Flow Chart
COMMISSIONING Starting Operation ﬂow chart START Check whether the power cable and Operate the unit in heating mode. communication cable are completely connected Does Test operation start? Is cold water discharged for * Check the load (In/Out Temp.) more than 3 minutes ? * Check pipe length and amount of refrigerant Is there any temperature...
Page 156: Vacuum & Charge Of Refrigerant
COMMISSIONING Vacuum & Charge of Refrigerant By default, the product was charged of refrigerant. Vacuum and refrigerant charge, If there is leak refrigerant. 1. Vacuum To work of vacuum action. when the leak of refrigerant. SVC Port Manifold gage Manifold valve Pressure gage Open...
Page 157 COMMISSIONING 2. Charge of refrigerant You should be charged after vacuum. You can see amount of refrigerant at quality label. Please to charge at cooling mode when there is not full charging. SVC Port Manifold gage Refrigerant cylinder Refrigerant Refrigerant cylinder cylinder...
Page 158: How To Drain Remaining Water In The Product
COMMISSIONING 3. Location of SVC port UN36A (5, 7, 9 kW) UN60A (9, 12, 14, 16 kW) SVC Port SVC Port How to drain remaining water in the product CAUTION If the product is not used for a long period of time with remaining water, there is a risk of freezing in winter.
Page 159: Troubleshooting
COMMISSIONING Troubleshooting 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 Problem Reason Solution • Set target temperature correctly. • Setting target temperature •...
Page 160 COMMISSIONING Troubleshooting for Error Code Display Title Cause of error Check point & Normal condition code Problem in remote room air sensor • Resistance: 10 kΩ at 25 centigrade Problem in refrigerant (inlet side) sensor (unplugged) → for Remote room Problem in refrigerant (outlet side) sensor air sensor •...
Page 161 COMMISSIONING Display Title Cause of error Check point & Normal condition code • An instant over current in the U,V,W phase - Comp lock • Instant over current - The abnormal connection of U,V,W DC PEAK • Over Rated current •...
Page 162 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Open / Short 1. Bad connection of thermistor connector Problem in D-pipe • Soldered poorly 2. Defect of thermistor connector (Open/Short) temperature sensor • Internal circuit error 3.
Page 163 COMMISSIONING Display Title Cause of error Check point & Normal condition code Fan RPM is less than 10 for 5 1. Fan motor damage seconds from start-up operation. Fan lock error 2. Assembly condition abnormal Fan RPM is less than 40 in operation 3.
Page 165 [EU 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 [U.K. Importer] LG Electronics U.K. Ltd Velocity 2, Brooklands Drive, Weybridge, KT13 0SL...

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LG Therma V HM091MRS Installation Manual

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