Page 1 OWNER’S MANUAL AIR-TO-WATER HEAT PUMP Please read this manual carefully before operating your set and retain it for future reference. Original instruction www.lg.com MFL68026705 Rev.08_052424 Copyright © 2018 - 2024 LG Electronics Inc. All Rights Reserved.
Page 2: For Your Records
Troubleshooting Tips first, you may not need to call for service at all. How to find additional model information Energy Labels and Product Fiches for all possible combinations can be found at https://www.lg.com/global/support/cedoc/cedoc. Search for outdoor unit name in cedoc page. For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes.
Page 3: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS INTRODUCTION SAFETY INSTRUCTIONS PRODUCT INTRODUCTION Name and function of parts Remote controller DESCRIPTION OF THE OPERATION Main screen Menu screen Setting screen Popup screen Monitoring (For 3 Series) Returning to the screen Monitoring (For 4 Series) Returning to the screen OPERATION SETTING On / Off...
Page 4 TABLE OF CONTENTS Exception Day DHW Recirculation Schedule (For 4 Series) ENERGY MONITORING SETTING Energy Monitoring Setting Information of Energy Monitoring METER INTERFACE SETTING Connection path of meter interface Information of meter interface FUNCTION SETTING How to enter function setting Function setting Low Noise Mode Time Wi-Fi Pairing...
Page 5: Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS Read the precautions in this manual This appliance is filled with carefully before operating the unit. flammable refrigerant (R32) This symbol indicates that a service This symbol indicates that the personnel should be handling this Operation Manual should be read equipment with reference to the carefully.
Page 6 SAFETY INSTRUCTIONS • For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the product by yourself. - There is risk of fire or electric shock. • Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightning rod or telephone ground wire.
Page 7 SAFETY INSTRUCTIONS • Wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. - Improper or loose connections can cause heat generation or fire. •...
Page 8 SAFETY INSTRUCTIONS • Do not touch any electric part with wet hands. you should be cut power 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.
Page 9 • Ducts connected to an appliance shall not contain an ignition source. • If anyone other than a licensed professional installs, repairs, or alters LG Electronics air conditioning products, the warranty is voided. - All costs associated with repair are then the full responsibility of the owner.
Page 10 SAFETY INSTRUCTIONS • Do not tilt the unit when removing or uninstalling it. - The condensed water inside can spill. • Do not mix air or gas other than the specified refrigerant used in the system. - If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.
Page 11: Product Introduction
PRODUCT INTRODUCTION PRODUCT INTRODUCTION Name and function of parts * The feature may be vary according to the type of model. 1. Unit 2. Remote controller 3. Water out (PT 25A) 4. Water in (PT 25A) 5. Hole for communication (Ø25) 6.
Page 12: Remote Controller
PRODUCT INTRODUCTION 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 When you move to the previous stage from the menu’s Back button 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 13: Description Of The Operation
DESCRIPTION OF THE OPERATION DESCRIPTION OF THE OPERATION Main screen In the main screen, press [<, >(left/right)] button to select the category to set, and you can control by pressing [ ∧ , ∨ (up/down)] button. Menu screen In the main screen, press [<, >(left/right)] button to select the menu and press [OK] button to move to menu screen.
Page 14: Setting Screen
DESCRIPTION OF THE OPERATION Setting screen Select the category to set using [ ∧ , ∨ (up/down)] button. In each detail screen of the menu, as in the box in the left figure, when “<,>” icons are displayed at the same time, you can immediately apply the setting value by pressing [<, >(left/right)] button.
Page 15: Monitoring (For 3 Series)
DESCRIPTION OF THE OPERATION Monitoring (For 3 Series) In the main screen, you can enter the monitoring screen by pressing [Back] button In the monitoring screen, you can check the following information, - The room temperature - The water inlet / outlet temperature - The water pump operation Returning to the screen In the main screen, after moving to the category by pressing [<, >(left/right)] button, if there is no...
Page 16: Monitoring (For 4 Series)
DESCRIPTION OF THE OPERATION Monitoring (For 4 Series) In the main screen, you can enter the monitoring screen by pressing [Back] button In the monitoring screen, you can check the following information, - The room temperature - The water inlet / outlet temperature - The water pump operation - The water flow rate - The water pressure...
Page 17: Operation Setting
OPERATION SETTING OPERATION SETTING On / Off will be turned on or off. Press the remote controller’s (On/Off) button. - If the product is in operation, On/Off button will be illuminated. If the product is in off, On/Off button backlight will be off. Operation mode You can easily control the desired operation mode.
Page 18: Cooling Operation
OPERATION SETTING Cooling operation Cooling operation’s minimum setting temperature is 5 °C. • The desired temperature can be controlled in the units of 1 °C. - Set the desired temperature lower than the water temperature. - water temperature is displayed on the default screen of the remote controller. - If the setpoint is set higher than the water temperature, then the unit will remain in the cool mode but will not begin to cool the water temperature exceeds the setpoint.
Page 19: Heating Operation
OPERATION SETTING Heating operation The heating operation’s minimum setting temperature is 15 °C. • The desired temperature can be controlled in the units of 1 °C. - Set the desired temperature higher than the water temperature. - Water temperature is displayed on the default screen of the remote controller. - When the desired temperature is set lower than the water temperature, warm water doesn't come out.
Page 20: Ai / Auto Operation
OPERATION SETTING AI / Auto operation This mode is only applied to heating. In order to save energy and to give highest comfort, setting temperature will follow outside temperature. If outdoor temperature decreases, heating capacity for the house will increase automatically in order to keep same room temperature.
Page 21: Temperature Setting
TEMPERATURE SETTING TEMPERATURE SETTING Controlling desired temperature You can easily control to the desired temperature. • In the main screen, press [<, > (left/right)] button to select the desired temperature category, and press [ ∧ , ∨ (up/down)] button to set the desired temperature. - In the cooling, heating, and AI/auto mode, the desired temperature control is possible.
Page 22: Select Temperature Sensor
TEMPERATURE SETTING Select Temperature Sensor There are 3 sensor options, air only, leaving water only, and air+water in installer mode. Sensor Locations are not available on all models. (For 3 Series) (For 4 Series)
Page 23: Dhw Heating Operation
TEMPERATURE SETTING DHW heating operation Funtion to set whether or not to use a installed DHW tank NOTE • This function is not used when the DHW tank is not installed. • If you want to know more information, refer function on installation information section. Quick DHW tank heating If there is urgent DHW heating demand, Quick DHW Tank Heating mode can be used to reduce the time to reach target DHW tank temperature by forcibly turning on DHW tank heater.
Page 24: View Temperature
TEMPERATURE SETTING View temperature General mode You can check the current temperature. • In the main screen, you can enter the monitoring screen by pressing [Back] button. (For 3 Series) (For 4 Series) Mode Description Room View room air temperature temperature Inlet View inlet water temperature...
Page 25 TEMPERATURE SETTING circuit mode (For 3 Series) (For 4 Series) Mode Description Room 1 View room 1 temperature temperature Room 2 View room 2 temperature temperature Inlet View inlet water temperature temperature Outlet View outlet water temperature temperature View DHW temperature temperature (Only displayed when set to DHW heating mode) View solar thermal system temperature...
Page 26: Lock Setting
LOCK SETTING LOCK SETTING How to enter Lock setting • In the menu screen, press [<,>(left/right)] button to select “lock setting” category, and press [OK] button to move to the lock setting list screen. • In the lock setting list, if you press [ ∧ , ∨ (up/down)] button, you can turn on/off the corresponding lock function.
Page 27: Timer Setting
TIMER SETTING TIMER SETTING Timer entrance and setting method • In the menu screen, press [<,>(left/right)] button to select the timer category, and press [OK] button to move to the timer setting list screen. • In the timer setting list screen, press [ ∧ , ∨ (up/down)] button to select the timer to set, and press [OK] button to move to the detail screen.
Page 28: Simple Timer
TIMER SETTING Simple Timer You can easily set the timer in the range of 1~7 hours in the units of 1 hour. NOTE If the product operation is On, the easy timer turns off the operation after the corresponding time. If the product operation is Off, the easy timer turns on the operation after the corresponding time.
Page 29: Turn-On Reservation
TIMER SETTING Turn-On Reservation The product is automatically turned On at the set timer time. It provides 2 Time formats, 12 Hours(AM/PM) or 24 Hours reference. NOTE Even if the Turn-on Reseravation operation is turned On/Off after the setting and before the timer operation, the set timer is not cleared.
Page 30: Turn-Off Reservation
TIMER SETTING Turn-Off Reservation The product is automatically turned Off at the set timer time. It provides 2 Time formats, 12 Hours(AM/PM) or 24 Hours reference. NOTE Even if the Turn-off Reservation operation is turned On/Off after the setting and before the timer operation, the set timer is not cleared.
Page 31: Schedule Setting
SCHEDULE SETTING SCHEDULE SETTING How to enter schedule • In the menu screen, press [<,>(left/right)] button so select the schedule category, and press [OK] button to move to the schedule setting list screen. • In the schedule setting list screen, press [ ∧ , ∨ (up/down)] button to select the menu to set, and press [OK] button to move to the detail screen.
Page 32: Daily Schedule
SCHEDULE SETTING Daily schedule It is the function that can check the status of the timer (schedule) saved in the remote controller. • In the schedule list, select the daily schedule status category, and press [OK] button to move to the detail daily schedule status screen.
Page 33: Schedules & Edit
SCHEDULE SETTING Schedules & Edit It is the function that can check the status of the timer (schedule) saved in the remote controller. • In the schedule list, select the daily schedule status category, and press [OK] button to move to the daily schedule status detail screen.
Page 34: Schedules & Edit - Add Schedule
SCHEDULE SETTING Schedules & Edit – Add schedule Description of each stage in Add schedule Stage 1. Period setting Stage 2. Day of week setting Stage 3. Time setting Stage 4. Operation setting Add schedule is completed In ‘Stage 1’, it sets the period to perform the timer. In ‘Stage 2’, it sets the day of week to perform the timer.
Page 35: Exception Day
SCHEDULE SETTING Exception Day It is the function to automatically stop the operation on the set timer day. • In the schedule list, select the exception day category, and press [OK] button to move to the Exception day designation detail screen. •...
Page 36: Dhw Recirculation Schedule (For 4 Series)
SCHEDULE SETTING DHW Recirculation Schedule (For 4 Series) It is the function that can check the status of DHW recirculation timer (schedule) saved in the remote controller. • In the schedule list, select the DHW recirculation schedule status category, and press [OK] button to move to the daily schedule status detail screen.
Page 37 SCHEDULE SETTING Description of each stage in Add schedule • Stage 1. Usage setting - It sets the use of the timer setting. - Select ‘Use’ to move on the next stage • Stage 2. Time setting setting - It sets the period to perform the timer. - The end time cannot be earlier than the start time.
Page 38: Energy Monitoring Setting
ENERGY MONITORING SETTING ENERGY MONITORING SETTING (For 4 Series) Energy Monitoring Setting It is the function that can check the status of energy and power on screen. It calculates power data to create data for energy monitoring. This function can be activated in installer mode. If the heater of the unit is used, the heater power can be calculated after setting the heater information on remote controller NOTE...
Page 39: Information Of Energy Monitoring
ENERGY MONITORING SETTING Information of Energy Monitoring It provides useful information on the mount of energy and power during the week/month/year. Opening “Energy “option, these are presented on screen. Instantaneous Power Power/Calorie The information includes instantaneous power as well as power usage and up to annual trend.
Page 40: Meter Interface Setting
METER INTERFACE SETTING METER INTERFACE SETTING Connection path of 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.
Page 41: Information Of Meter Interface
METER INTERFACE SETTING Information of meter interface It provides useful information on the mount of energy and power during the week/month/year. Opening “Energy “option , these are presented on screen. Instantaneous Power Power/Calorie The information includes instantaneous power as well as power/calorie usage and up to annual trend .
Page 42: Function Setting
FUNCTION SETTING FUNCTION SETTING How to enter function setting To enter the menu displayed at the bottom, you need to enter the function 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 43: Function Setting
FUNCTION SETTING Function setting Menu Description It is the function to set the start and end time of the outdoor unit’s Low Noise Mode Time low noise mode operation. Wi-Fi Pairing It is the function to control remotely through network with indoor unit. If you select (Air + Water) as the temperature control mode, This Water Temperature option is activated on screen.
Page 44: Low Noise Mode Time
FUNCTION SETTING Low Noise Mode Time It is the function to set the start and end time of the outdoor unit’s low noise mode operation. • In the function setting list, select the Low Noise Mode Time category, and press [OK] button to move to the detail screen.
Page 45: Wi-Fi Pairing
FUNCTION SETTING Wi-Fi Pairing It is the function to control remotely through network with indoor unit.
Page 46: Water Temperature Setting
FUNCTION SETTING Water Temperature Setting If you choose air+water temperature control way, this option is listed-up on function setting display. It is the function to set upper limit of water temperature while controlling the unit based on room air temperature. Value Description Manually setting water target temperature of heating and cooling...
Page 47: 47 3 Nd Party Boiler
FUNCTION SETTING Party Boiler NOTE This function is not default. It can be activated, after setting value in installer mode. Function to set whether or not to use a installed 3rd Party function. If the mode of this function is set to “Manual”, you can set temperature of the boiler and hysteresis, respectively.
Page 48: User Setting
USER SETTING USER SETTING How to enter user setting To enter the menu displayed at the bottom, you need to enter the user setting menu as follows. • Select the setting category, and press [OK] button to move to the setting list. •...
Page 49: Language
USER SETTING Language Set the language to be displayed on the remote controller. • In the user setting list, select the language category, and press [OK] button to move to the detail screen. • After the setting, if you press [OK] button, the setting is saved and moves to the previous screen.
Page 50: Temperature Unit
USER SETTING Temperature Unit Set the temperature unit displayed on the remote controller. • In the user setting list, select the temperature unit setting category, and press [OK] button to move to the detail screen. Celsius Value Fahrenheit CAUTION The temperature unit function may not work or work differently in some products. You cannot set the temperature unit in the slave wired remote controller.
Page 51: Screen Saver Timer
USER SETTING Screen Saver Timer Adjust the screen Off time of the remote controller. • Select the following setting values using [<,>(left/right)] button. Value 15 seconds 30 seconds (default) 1 min CAUTION Selecting longer stand by screen will decrease LCD lifespan. LCD Brightness In Idle Adjust the remote controller’s screen brightness.
Page 52: Date
USER SETTING Date Set the date displayed on the remote controller. • In the user setting list, select the date category, and press [OK] button to move to the detail screen. • After the setting, if you press [OK] button, the setting is saved and moves to the previous screen.
Page 53: Time
USER SETTING Time Set the time displayed on the remote controller. • In the user setting list, select the time category, and press [OK] button to move to the detail screen. • After the setting, if you press [OK] button, the setting is saved and moves to the previous screen.
Page 54: Summer Time
USER SETTING Summer Time Set the daylight savings time dates in the remote controller. • In the user setting list, select the summer time setting category, and press [OK] button to move to the detail screen. - Summer time: The system to advance the time by 1 hour from the spring when the day is longer and return back in the fall when the day gets shorter.
Page 55: Password
USER SETTING Password Set the password to prevent unauthorized change to remote controller settings. • Select the user password setting category, and press [OK] button to move to the detail screen. - If the password is set, when you enter “menu – setting”, you need to input password to enter the setting list.
Page 56: Schedule Initialization / Schedule Reset
USER SETTING Schedule Initialization / Schedule Reset Initialize all timer settings in the remote controller. • In the user setting list, select the schedule initialization setting category, and press [OK] button to move to the detail screen. - Press the check button to initialize the sleep/simple timer, on/off timer, schedule and exception date in the remote controller.
Page 57: Theme
USER SETTING Theme Set the theme of the remote controller screen. • Select either white or black using [<,>(left/right)] button. Auto return to main screen Set the auto return mode. • Select either On or Off using [<,>(left/right)] button. System Reboot Restart the remote controller.
Page 58: Overview Owner's Settings
OVERVIEW OWNER’S SETTINGS OVERVIEW OWNER’S SETTINGS Menu structure Menu Lock ................26 All Lock ................26 On/Off Lock ................26 Mode Lock Timer ................28 Simple Timer ................29 Turn-On Reservation ................30 Turn-Off Reservation Schedule ................32 Daily Schedule ................33 Schedules & Edit ................34 Schedules & Edit - Add schedule Energy ............40 Connection path of meter interface...
Page 59 OVERVIEW OWNER’S SETTINGS User ......49 Language ......50 Temperature Unit ......51 Screen Saver Timer ......51 LCD Brightness In Idle ......52 Date ......53 Time ......54 Summer Time ......55 Password ......56 Schedule Initialization ......57 Theme ......57 System Reboot...
Page 60: Using Thermostat
The term "thermostat", which is widely used in this chapter, is a kind of 3rd party accessory. LG Electronics does not supply thermostat and it should be supplied 3rd party manufacturers. Room thermostat can be used for easy and convenience control. To utilize thermostat more efficiently and correctly, this chapter presents information about using thermostat.
Page 61: 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 62: Emergency Operation
EMERGENCY OPERATION 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 63 EMERGENCY OPERATION • Duplicated trouble : Option trouble with slight or heavy trouble - If option trouble is occurred with slight (or heavy) trouble at the same time, the system puts higher priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is occurred. - Therefore, sometimes sanitary water heating can be impossible in emergency operation mode.
Page 64: Maintenance And Service
MAINTENANCE AND SERVICE MAINTENANCE AND SERVICE Maintenance activities In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals, preferably yearly. This maintenance should be carried out by your local agreed technician.
Page 65: How To Drain Remaining Water In The Product
MAINTENANCE AND SERVICE 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. Step1. To drain most of the water out of the Step1 product, remove the water pipes from the inlet/outlet valve( ①...
Page 66: Call The Service Immediately In The Following Situations
MAINTENANCE AND SERVICE Call the service immediately in the following situations • Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off. Never try to repair by yourself or restart the system in such cases. •...
Page 67 LG Electronics Inc. Single Point of Contact (EU/UK) : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands Manufacturer : LG Electronics Inc. 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA UK Importer : LG Electronics U.K. Ltd...
Page 68: Air-To-Water Heat Pump
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 www.lg.com MFL68026607 Rev.20_060724 Copyright © 2018 - 2024 LG Electronics Inc. All Rights Reserved.
Page 69 TABLE OF CONTENTS TABLE OF CONTENTS PREFACE [Chapter 1] SAFETY INSTRUCTIONS [Chapter 2] INSTALLATION PART [Chapter 3] GENERAL INFORMATION Model Information Model name and related information Parts and Dimensions Control Parts Remote Controller Typical Installation Example Cycle Diagram Water cycle [Chapter 4] INSTALLATION Transporting the Unit...
Page 70 Water Quality Frost protection by antifreeze Frost protection by antifreeze valve Water Volume and Expansion Vessel Pressure [Chapter 5] ACCESSORIES INSTALLATION Accessories supported by LG Electronics Accessories supported by 3rd party Companies Before Installation Thermostat 2nd Circuit 3rd Party Boiler...
Page 71 TABLE OF CONTENTS 3Way Valve(A) 3Way Valve(B) Electric Heater Typical Installation Example Final check [Chapter 6] CONFIGURATION DIP Switch Setting [Chapter 7] SERVICE SETTING How to enter service setting Service setting Service Contact Model Information RMC Version lnformation Open Source License [Chapter 8] INSTALLER SETTING (For 3 Series) How to enter installer setting...
Page 72 TABLE OF CONTENTS Screed drying Heater on temperature Water supply off temp. during cooling Tank disinfection setting 1, 2 Tank setting1 Tank setting2 Heater priority DHW time setting TH on/off Variable, heating air TH on/off Variable, heating water TH on/off Variable, cooling air TH on/off Variable, cooling water Heating temp.
Page 73 TABLE OF CONTENTS RMC master/slave LG Therma V Conﬁguration Forced operation Pump Prerun/Overrun Water Flow Control Energy Monitoring Anti-Freezing Option 1 Password Reset Screed drying Heater on temperature Air heating set temp. Water heating set temp. Hysteresis Room Air(Heating) Hysteresis Heating Water Heating temp.
Page 74 TABLE OF CONTENTS Energy state Thermostat control type Pump operation time IDU operation time Modbus Address Modbus gateway memory map CN_EXT 3rd Party Boiler Meter Interface Current ﬂow rate Data logging [Chapter 9] COMMISSIONING Check List before Starting Operation Starting Operation Starting Operation ﬂow chart Airborne Noise Emission Vacuum &...
Page 75: 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 76: Safety Instructions
PREFACE 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 77 SAFETY INSTRUCTIONS • For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. - There is risk of fire or electric shock. • Always ground the unit. - There is risk of fire or electric shock. •...
Page 78 SAFETY INSTRUCTIONS • 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. •...
Page 79 SAFETY INSTRUCTIONS • Do not pierce or burn. (for R32) • Be aware that refrigerants may not contain an odour. (for R32) • Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.
Page 80 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 81 SAFETY INSTRUCTIONS • 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.
Page 82 SAFETY INSTRUCTIONS • 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.
Page 83 SAFETY INSTRUCTIONS • Leak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants. Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re- calibration.
Page 84 SAFETY INSTRUCTIONS - Cylinders shall be kept in an appropriate position according to the instruction. - Ensure that the refrigeration system is earthed prior to charging the system with refrigerant. - Label the system when charging is complete (if not already). - Extreme care shall be taken not to overfill the refrigerating system.
Page 85 SAFETY INSTRUCTIONS Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.
Page 86 SAFETY INSTRUCTIONS The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable refrigerants other than A2L refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process may need to be repeated several times.
Page 87: Operation
SAFETY INSTRUCTIONS • 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. •...
Page 88 SAFETY INSTRUCTIONS • 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.
Page 89: 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. *The parts can be found inside the outdoor unit by opening the side panel.
Page 90: 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 91 GENERAL INFORMATION - For 3 Series - For 4 Series Refrigerant Refrigerant H M 09 1 S U3 3 M 09 Signification Signification Air-to-Water-Heat Pump Air-to-Water-Heat Pump Classification Classification - M : Monobloc - M : Monobloc Heating Capacity Heating Capacity - E.g) 9 kW →...
Page 92: 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 220-240 V~ 50 Hz UN36A 380-415 V 3N~ 50 Hz 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) ’...
Page 93: Parts And Dimensions
GENERAL INFORMATION Parts and Dimensions - For 3 Series UN36A (5, 7, 9 kW) (Unit : mm) 1239 3D View 6 holes for Anchor Bolts (M10) Side View 3-ID Ø 20 holes for drain connection The shape may differ depending on the model.
Page 94 GENERAL INFORMATION UN60A (9, 12, 14, 16 kW) (Unit : mm) 1239 6 holes for Ancher Bolts (M10) 3D View Side View 3-ID Ø 20 holes for drain connection The shape may differ depending on the model.
Page 95 GENERAL INFORMATION 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 Front Panel Side Panel Low Voltage Communication Cable Hole UNIT Power Power Cable Hole Water Pump Circulating the water...
Page 96 GENERAL INFORMATION - For 4 Series UN36A (5, 7, 9 kW) (Unit : mm) 1239 Drain hole for drain nipple (6EA) Note: If you need more drains, remove them. Drain hole for drain nipple (1EA) The shape may differ depending on the model.
Page 97 GENERAL INFORMATION UN60A (12, 14, 16 kW) (Unit : mm) 1239 Drain hole for drain nipple (1EA) Drain hole for drain nipple (6EA) Note: If you need more drains, remove them. The shape may differ depending on the model.
Page 98 GENERAL INFORMATION 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 Front Panel Side Panel Low Voltage Communication Cable Hole UNIT Power Power Cable Hole Water Pump Plate Heat Exchanger...
Page 99: Control Parts
GENERAL INFORMATION Control Parts - For 3 Series 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) The shape may differ depending on the model. Refer to “Exploded View” in SVC Manual. Description Name Remark...
Page 100: Control Box
GENERAL INFORMATION - For 4 Series Control box The shape may differ depending on the model. Refer to “Exploded View” in SVC Manual. Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring The main PCB(Printed Circuit Board) controls the functioning of the Main PCB unit...
Page 101: 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 102: 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 103: Installation
GENERAL INFORMATION CASE 2: Connecting DHW Tank Outdoor Indoor Buffer Tank 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 104 GENERAL INFORMATION CASE 3: Connecting Solar thermal system Outdoor Indoor Buffer Tank 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 105 GENERAL INFORMATION CASE 4-1: Connecting 2nd Circuit (For 3 Series) [Circuit 2] Mixing Circuit circuit temp. sensor Outdoor Indoor Mix Kit Floor heating loop Floor heating loop Buffer Tank M / F [Circuit 1] Direct Circuit Radiator Radiator CASE 4-2: Connecting 2nd Circuit (For 4 Series) [Circuit 2] Mixing Circuit Outdoor Indoor...
Page 106 GENERAL INFORMATION CASE 5: Connecting 3 Party 3 Way Valve 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 107 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. - During cooling operation, connect the 3-Way Valve with automatic reset function using the 2-Way Valve connection terminal to prevent water from going to the Backup Heater.
Page 108: Cycle Diagram
GENERAL INFORMATION Cycle Diagram - For 3 Series 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...
Page 109 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 110 GENERAL INFORMATION - For 4 Series UN36A (5, 7, 9 kW) UN60A (12, 14, 16 kW) <Refrigerant Side> <Water Side> : Cooling <Outdoor unit> : Heating Air Vent Backup Heater Pressure Accessory Pressure Sensor Switch Accumulator Expansion Tank Relief EEV1 valve Water Air Vent...
Page 111: Water Cycle
GENERAL INFORMATION Water cycle - For 3 Series...
Page 112 GENERAL INFORMATION - For 4 Series...
Page 113 GENERAL INFORMATION Description Category Symbol Meaning PCB Connector Remarks Refrigerant temperature sensor (Gas side) CN_PIPE_OUT - Meaning is expressed based on Cooling mode. Refrigerant temperature sensor (Liquid side) CN_PIPE_IN Water temperature sensor (Water In) Water _IN Water temperature sensor (Water Out) Water _OUT Flow Switch CN_FLOW1...
Page 114: 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 115: 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 116: Multiple Installation
INSTALLATION Multiple installation When installing two or more units, please observe the installation space. - If there is an obstruction in the intake Unit : mm - If there is an obstruction in the discharge part Unit : mm...
Page 117 INSTALLATION - When there is an obstacle in the suction or discharge part Unit : mm L > H L > H ≤ ≤ - Multiple installation on the roof Unit : mm ≤...
Page 118: Installation At Seaside
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 119: 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 120: 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 121 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 122 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 123 INSTALLATION Point for attention regarding quality of the public electric power supply (For 3 Series) - European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤ 75 A. - European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current ≤...
Page 124 INSTALLATION Point for attention regarding quality of the public electric power supply (For 4 Series) - European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤ 75 A. - European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current ≤...
Page 125 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 126 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 127 INSTALLATION Step 2. Connect power cable to main power terminal block. See below figure for detailed information. When connecting power cable, the diameter of cable should be refer to the electrical wiring. For the 1-Phase Main Terminal block For the 3-Phase Main Terminal block 1(L) 2(N) Power Supply...
Page 128: Terminal Block Information
INSTALLATION Terminal Block Information - For 3 Series 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 (From September, 2020) Case 2 (Until August, 2020) Terminal Block 1...
Page 129 INSTALLATION - For 4 Series 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 Terminal Block 1 2WAY VALVE 3WAY VALVE...
Page 130: 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 131: 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 132: Pipe Insulation
INSTALLATION When the water pipes are connected. It must be tightened the nut with two wrench. Otherwise pipes can be deformed. Water Out * The feature may be vary according to the type of model. Water In WARNING Installing shut-off valve •...
Page 133: 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 134: 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 135: Performance Curve
INSTALLATION Performance curve GRUNDFOS Water Pump : UPML GEO 20 – 105 CHBL UN60A (12, 14, 16 kW) GRUNDFOS Water Pump : UPM3K GEO 20 – 75 CHBL UN36A (5, 7, 9 kW), UN60A (9 kW) OH SUNG Water Pump : ODM-061P UN60A (12, 14, 16 kW), UN36A (5, 7, 9 kW) Q-H Chart Q [LPM]...
Page 136: 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 137: Frost Protection By Antifreeze Valve
INSTALLATION Frost protection by antifreeze valve About antifreeze valve This is a valve to prevent freeze in winter. When no antifreeze is added to the water, you can use antifreeze valves at all lowest points of the field piping to drain the water from the system before it can freeze To install antifreeze valve To protect the field piping against freezing, install the following parts:...
Page 138 INSTALLATION NOTE • Do not make any trap connections. If the shape of the connection pipe has the potential to create a trap effect, part of the pipe will not be able to drain and frost protection will no longer be guaranteed. •...
Page 139: 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 140: 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 141 ACCESSORIES INSTALLATION Item Purpose Model OSHW-200F : 200 L, Single Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater OSHW-300F : 300 L, Single Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater DHW Tank To generate and store hot water OSHW-500F : 500 L, Single Heating Coil, 1Ø...
Page 142 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 143: 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 144 ACCESSORIES INSTALLATION General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only (3) Mechanical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) Heating Only (3) Electrical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) (1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
Page 145 ACCESSORIES INSTALLATION How to wire thermostat (For 3 series) 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 146: Final Check
ACCESSORIES INSTALLATION How to wire Heating / Cooling / DHW Heating thermostat (For 4 Series) Follow below procedures Step 1 ~ Step 3. 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 147 ACCESSORIES INSTALLATION Circuit The 2nd circuit is a function that can separately control the circuit1 requiring high temperature and the circuit 2 requiring medium temperature, you need to prepare a separate Mix Kit. The mix kit must be installed in the circuit 2. - For 3 Series [Install Guide 2 Circuit Heating]...
Page 148 ACCESSORIES INSTALLATION The 2nd circuit is a function that can separately control the circuit1 requiring high temperature and the circuit 2 requiring medium temperature, you need to prepare a separate Mix Kit. The mix kit must be installed in the circuit 2. - For 4 Series [Install Guide 2 Circuit Heating]...
Page 149 ACCESSORIES INSTALLATION How to Wire Mix Pump, Mixing Valve and Thermistor for 2nd Circuit - For 3 Series Follow below procedures Step 1 ~ Step 3. 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...
Page 150 ACCESSORIES INSTALLATION - For 4 Series Follow below procedures Step 1 ~ Step 3. 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 151 ACCESSORIES INSTALLATION [Thermistor for 2 circuit] Sensor Sensor Holder Sensor Connector Follow below procedures step 1 ~ step 4. Step 1. Install sensor connector to outlet pipe of mix kit water pump. (Welding must be performed to connect the sensor connector to the pipe.) Step 2.
Page 152: 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 153: 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 154: 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 155: Central Controller
Log in to central controller and register device with address set. Consult a qualified engineer/ technician for the installation of central controller. If you have any installation queries, contact the LG service center or LG Electronics. How to Installation PI485 Fix the PI485 PCB as shown in below images.
Page 156: 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 157 ACCESSORIES INSTALLATION • After fixing the remote controller top side on the installation plate attached to the wall as in the following figure, press the bottom side to combine with the installation plate. - Do not leave a gap in the top, bottom, left, and right side of the remote controller and the installation plate after combining them.
Page 158 ACCESSORIES INSTALLATION • For the following cases, separately purchase and use the cables suitable for the situation. - Do not install the cable over 50 m.(It may cause communication issues.) - If the distance between the wired remote controller and the unit is 10 m or more : 10 m extension cable (model name: PZCWRC1) NOTE During the wired remote controller installation, do not bury it in the wall.
Page 159 ACCESSORIES INSTALLATION 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. - According to the installation environment, there are 3 directions (Rear entry, top side, and right side) for the installation.
Page 160: 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 161 ACCESSORIES INSTALLATION Installing recirculation pump - For 3 Series 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 162 ACCESSORIES INSTALLATION - For 4 Series 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 163 ACCESSORIES INSTALLATION How to Wire Booster 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.
Page 164 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 165: 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 166 ACCESSORIES INSTALLATION - For 4 Series CN_TH4 CN_TANK_HEATER Indoor PCB Fig. 1 1(L) 2(N) TO ELB FOR DHW TANK E/HEATER DHW TANK HEATER...
Page 167: Solar Thermal Kit (For 3 Series)
Solar Thermal Kit (For 3 Series) 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 168: Sensor Mounting
ACCESSORIES INSTALLATION Solar Thermal Sensor (less than 12 m) 3way valve (Field Supply) Solar Water In Water Tank Sensor Tube Thermal connecter System (less than 12 m) Water Out (Field Supply) Solar Water In Pump Collector (Field Supply) (Field Supply) Water Out Water Tank Water In / Water Out installation scene may vary depending on the model.
Page 169: Solar Thermal Kit (For 4 Series)
ACCESSORIES INSTALLATION Solar Thermal Kit (For 4 Series) 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. How to Install Solar Thermal System Follow below procedures step 1 ~ step 3. Step 1.
Page 170: 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 171 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 172: 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 173: 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 174 ACCESSORIES INSTALLATION How to Install Remote Temperature Sensor [Parts of Remote Temperature Sensor] Sensor Screw(to fix remote sensor) Follow below procedures step 1 ~ step 5. Step 1. Decide where the remote temperature sensor is Installed. Then, Determine the location and height of the fixing screws in fig.
Page 175 ACCESSORIES INSTALLATION Step 6. Integrate the remote temperature sensor with the screws Fixing the Remote Sensor as the order of arrows. CAUTION • Choose the place where the average temperature can be measured for the unit operates. • Avoid direct sunlight. •...
Page 176: 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 177: 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 178: 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 179: 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 180: 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 181: 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 182 ACCESSORIES INSTALLATION WARNING Wiring • Normal Open type should be connected to wire (NO) and wire (N) for valve opening in cooling mode. • Normal closed type should be connected to wire (NC) and wire (N) for valve closing in cooling mode.
Page 183: 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 184: 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 185: 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 186 ACCESSORIES INSTALLATION Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (220-240 V~) - N : Neutral (220-240 V~) - R, S, T : Live (380-415 V 3N~) - BR : Brown, WH : White, BL : Blue, BK : Black <1Ø...
Page 187 ACCESSORIES INSTALLATION How to Wire Electric Heater - For 3 Series 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.
Page 188 ACCESSORIES INSTALLATION Step 4. Connect power supply cable to terminal block 2. When Tightening the power cable on terminal block, Be careful to prevent a shock or injury. Terminal Block 2 (In 1Ø Backup Heater) Terminal Block 2 (In 3Ø Backup Heater) 1(L) 2(N) 1(R)
Page 189 ACCESSORIES INSTALLATION - For 4 Series Follow below procedures Step 1 ~ Step 4. Step 1. Uncover the electric heater accessory. Step 2. Find the terminal block and connect wires. (Wires are field-supplied item.) Step 3. Connect terminal block ports of unit and electric heater accessory. Indoor PCB COMMON 3PHASE...
Page 190 ACCESSORIES INSTALLATION (3Ø 6 kW) Terminal Block 2 (In Backup Heater) 1(L) 2(N) 3(T) A(A1) A(A2) Power Supply ELECTRIC HEATER A 3Ø 380-415 V, 50 HZ (SIGNAL) Power supply COMMON 3PHASE HEATER 1 HEATER 2 Step 4. Connect power supply cable to terminal block 2. Terminal Block 2 (In 1Ø...
Page 191: Typical Installation Example
ACCESSORIES INSTALLATION Typical Installation Example (Backup heater for Monobloc) Floor heating + Backup Heater (Only Heating) [Outdoor] [Mech. Room] [Room] Backup Heater Collector Collector Product Buffer Tank Filter Safety Valve 2 Way Valve (Signal) Thermostatic Valve 2 Way Valve (Manual) Remote Air vent Control...
Page 192 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) - For 3 Series WARNING...
Page 193: 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 194: [Chapter 6] 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. - For 3 Series DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch •...
Page 195: Option Switch
CONFIGURATION DIP Switch Information Option Switch 2 Description Setting Default Unit + Outdoor unit is installed Unit + Outdoor unit + DHW tank Accessory installation is installed information Unit + Outdoor unit + DHW tank + Solar thermal system is installed Heating Only Cycle Heating &...
Page 196 CONFIGURATION Option Switch 3 Description Setting Default Remote sensor is not installed Remote Air Sensor Remote sensor is installed Antifreezing solution not using mode ANTIFREEZE Antifreezing solution using mode Outdoor PCB (5, 7, 9 kW) OFF is selected ON is selected Outdoor PCB (12, 14, 16 kW) OFF is selected ON is selected...
Page 197 CONFIGURATION DIP Switch Information Description Setting Default Normal Low Noise Mode Low Noise Mode Limited Low Noise Mode Max Mode Peak Control Step 1 - To limit maximum current Peak Control (Power saving) Peak Control Step 2 - To limit maximum current (Power saving) Only DIP Switch no.
Page 198 CONFIGURATION - For 4 Series DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch • Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock. Indoor PCB OFF is selected ON is selected...
Page 199 CONFIGURATION DIP Switch Information Option Switch 2 Description Description Setting Setting Default Default Heat pump is installed (Heating(Cooling) circuit only) Heat pump + DHW tank Accessory installation is installed information Heat pump + DHW tank + Solar thermal system is installed Heating Only Cycle Heating &...
Page 200: Outdoor Pcb
CONFIGURATION Option Switch 1 Description Description Setting Setting Default Default As Master (LG extension modules) MODBUS Communication Type As Slave (3rd party controller) MODBUS Function Unified Open Protocol Antifreeze agent is not used Antifreeze Agent Antifreeze agent is used * * Possibility to allow colder water temperature by setting.
Page 201 CONFIGURATION DIP Switch Information Description Setting Default Normal Low Noise Mode Low Noise Mode Limited Low Noise Mode Max Mode Peak Control Step 1 - To limit maximum current Peak Control (Power saving) Peak Control Step 2 - To limit maximum current (Power saving) Normal Defrost Mode - The same mode as the existing...
Page 202 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 203 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 204: [Chapter 7] 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 205: Service Contact
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 206: 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 207: 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 208: 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 209: Installer Setting (For 3 Series)
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 [ ∧...
Page 210: Installer Setting (For 3 Series)
INSTALLER SETTING Installer setting (For 3 Series) • 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 211 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 212 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 213: 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 214: 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 215: 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 216: 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 217: 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 218: 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 219: 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 220: 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 221: 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 Default Range Min.
Page 222: 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 223 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 224: 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 225 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...
Page 226: 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 227 INSTALLER SETTING - Stop temp. : cut-off temp. Stop temp. is valid when FCU is set as ‘Use’. - 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 228: 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 229: Tank Setting1
INSTALLER SETTING Tank setting1 • In the installer setting list, select tank setting 1 category, and press [OK] button to move to the detail screen. Value Default Range Min Temp. 5 °C 1 ~ 30 °C Max outdoor temp. 55 °C 40 ~ 58 °C NOTE "Max outdoor temp."...
Page 230: Tank Setting2
INSTALLER SETTING Tank setting2 • In the installer setting list, select tank setting 2 category, and press [OK] button to move to the detail screen. Value Default Range Hysteresis 3 °C 2 ~ 4 °C Heating priority Floor heating / DHW...
Page 231 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 43 °C….
Page 232: Heater Priority
INSTALLER SETTING Heater priority • Heater priority: It is decided whether to use the boost heater for DHW operation and the backup heater for floor heating at the same time by condition. • Example: If the heater priority is set to 'Main+Boost heater ON', the backup heater and boost heater are turned on/off according to the control logic.
Page 233: 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 234 INSTALLER SETTING Value Default Range Active time 30 min 5~95 min Stop time 180 min 0~600 min Boost heater delay time 20 min 20~95 min...
Page 235: 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 236: 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 237: 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 238: 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 239: 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 240: 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 241: 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 242: 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 243: Forced Operation
INSTALLER SETTING Forced operation • If the product is not used for a long time, the pump 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 244: 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 245: 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 246: 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. Function Description Range...
Page 247 INSTALLER SETTING In this mode, setting temperature will follow outdoor temperature automatically. This mode adds the cooling season function to the conventional weather dependent operation mode. Auto-Adjustable Heating Target Temperature Cooling Water Temp Target: LW/EW1 Room Air Temp Target: RA1 Temperature profile of weather dependent operation Water Temp Target: LW/EW2...
Page 248: 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 249: 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 250: 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. Make sure to use this function only when antifreeze is added. • 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 251: 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. Value Default Range Valve Closing Time 240 s 60 ~ 999 s Hysteresis...
Page 252: 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 253: 3Rd Party Boiler
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 254: 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 255: 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 removes latent heat from the PHEX by circulating the water flow when the comp is stopped.
Page 256: 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 257 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 258: 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 259 INSTALLER SETTING Division Value Default Range Division Value Default Range Use / Not Use Use / Not Use Heat Temp. fixed Heat Temp. +5 °C 0 ~ 30 °C ES 1 ES 5 Cool Temp. fixed Cool Temp. -5 °C -30 ~ 0 °C DHW Temp.
Page 260 INSTALLER SETTING When Signal Mode of EES use type is selected, press the Digital Input Assignment button to set the energy state according to the input signal. Input Signal Output state Value TB_SG1 TB_SG2 Default Range fixed fixed ES3-ES8...
Page 261: 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 262: 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 263: Installer Setting (For 4 Series)
Function to use 2 remote control environment Function to save the environment settings of the LG Therma V Configuration product for use in LG Therma V Configurator through SD Card. Water pump off After 20 consecutive hours, disable / Forced operation...
Page 264 INSTALLER SETTING Segmentation Functions Description At the water control in cooling mode, the control Cooling temp. setting reference water temperature position setting Adjusting range of 'Setting Air Temperature' in Air cooling set temp. cooling mode Adjusting range of 'Setting Leaving Water Water cooling set temp.
Page 265 INSTALLER SETTING Segmentation Functions Description Dry contact function is the function that can be Dry Contact Mode used only when the dry contact devices is separately purchased and installed. When connecting the central control, set the Central Control Address central control address of the unit. It is the function to set whether to install (use) Dry Contact.
Page 266: Select Temperature Sensor
INSTALLER SETTING Select Temperature Sensor The product can be operated according to air temperature or water temperature. The selection for setting temperature as air temperature or water temperature is determined. • In the installer setting list, Select Temperature Sensor category, and press [OK] button to move to the detail screen.
Page 267: Use Heating Tank Heater
INSTALLER SETTING Use Heating Tank Heater This is a function to change the set value for the operation of the hot water tank heater, such as heating tank heater use /not use and heater delay time. • In the installer setting list, Select Configuration category, and press [OK] button to move to the detail screen.
Page 268: Mixing Circuit
INSTALLER SETTING Mixing Circuit Function to set whether or not to use a installed mixing circuit function using mixing kit. Value Default Not Use / Heat / Cool Not Use You can set valve closing time[s] and hysteresis temperature[°C] on screen by yourself. Setting the cut-off temperature protects the water from flowing over the cut-off temperature in the mixing circuit during heating operation.
Page 269 INSTALLER SETTING You can set the operation of the outdoor unit when only the mixing circuit is operating and the direct circuit is not operating. Type1 Type2 (Default) Outdoor Operation Outdoor Not Operation Value Default Type 1 / Type 2 Type 2 CAUTION Set Type 1 only at the installation site with a small load or no buffer tank.
Page 270 INSTALLER SETTING Installer setting function to set water mixing pump operation / delay time option in heating/cooling mode Value Default Range Time Setting / Continuous Type Time Setting Operation 3 min 1 ~ 60 min 3 min 1 ~ 60 min * When Continuous Operation is selected, On, Off is disabled.
Page 271: 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 272: Rmc Master/Slave
INSTALLER SETTING RMC master/slave This function can be select Master/Slave on remote controller to use 2 Remote Control environment • In the Installer setting list, and select RMC master/slave setting category, and press [<,>(left/right)] button to following setting values. Value Master (Default) Slave...
Page 273: Lg Therma V Configuration
INSTALLER SETTING LG Therma V Conﬁguration This function can be set to save the environment settings of the product for use in LG Therma V Configurator through SD Card. • In the Installer setting list, and select LG Therma V Configuration setting category, and press [OK] button to move to the detail screen.
Page 274: Forced Operation
INSTALLER SETTING Forced operation • If the product is not used for a long time, the pump 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 275: 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 removes latent heat from the PHEX by circulating the water flow when the comp is stopped.
Page 276: Water Flow Control
INSTALLER SETTING Water Flow Control This function controls the water flow by controlling the water pump. Select the way to control the water pump and set the target value • In the installer setting list, select Configuration category, and press [OK] button to move to the detail screen.
Page 277: Energy Monitoring
This function can be set to use energy monitoring function of unit. • Change setting values using [<,>(left/right)] button. Value Default Range Energy Monitoring Use/Not Use LG 1Ø / LG 3Ø / Type LG 1Ø EXTERNAL Electric Heater Setting Heater Capacity 6 kW...
Page 278: Anti-Freezing Option 1
INSTALLER SETTING Anti-Freezing Option 1 This function is to select whether to use Type1 or Type2 to prevent freezing when the remote control is turned off. • Change setting values using [<,>(left/right)] button. Value Type1(Default) Type2 CAUTION If the function is set to Type 2, there is a risk of freezing. Function Detection Case...
Page 279: Password Reset
INSTALLER SETTING Password Reset 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 Reset setting category, and press [OK] button to move to the detail screen. •...
Page 280: 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 281 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 282: Heater On Temperature
INSTALLER SETTING Heater on temperature Depending on local climatic conditions, it is necessary to change the temperature condition in which backup heater turns on / off. • In the installer setting list, Heater on temperature category, and press [OK] button to move to the detail screen.
Page 283: 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 284: Water Heating Set Temp
INSTALLER SETTING Water heating set temp. Determine heating setting temperature range when 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 285: Hysteresis Room Air(Heating)
INSTALLER SETTING Hysteresis Room Air(Heating) It is a function to adjust the heating air temperature Thermal On / Off temperature according to the field environment in order to offer optimized heating operation. • In the Installer setting list, and select Hysteresis Room Air(Heating) category, and press [OK] button to move to the detail screen.
Page 286: Hysteresis Heating Water
INSTALLER SETTING Hysteresis Heating Water It is a function to adjust the heating water temperature Thermal On / Off temperature according to the field environment in order to offer optimized DHW heating operation. • In the Installer setting list, and select Hysteresis Heating Water category, and press [OK] button to move to the detail screen.
Page 287: Heating Temp. Setting
INSTALLER SETTING Heating temp. setting • At the 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 •...
Page 288: 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 on/off interval option during thermo off condition in heating mode.
Page 289: 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 290: Water Cooling Set Temp
INSTALLER SETTING Water cooling set temp. Determine cooling setting temperature range when 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 291: Water Supply Off Temp. During Cooling
INSTALLER SETTING Water supply off temp. during cooling Determine the leaving water temperature which blocks the flow into underfloor coil in cooling mode. 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 292: Hysteresis Room Air(Cooling)
INSTALLER SETTING Hysteresis Room Air(Cooling) It is a function to adjust the cooling air temperature Thermal On / Off temperature according to the field environment in order to offer optimized cooling operation. • In the Installer setting list, and select Hysteresis Room Air(Cooling) setting category, and press [OK] button to move to the detail screen.
Page 293: Hysteresis Cooling Water
INSTALLER SETTING Hysteresis Cooling Water It is a function to adjust the cooling water temperature Thermal On / Off temperature according to the field environment in order to offer optimized cooling operation. • In the Installer setting list, and select Hysteresis Cooling Water setting category, and press [OK] button to move to the detail screen.
Page 294: Cooling Temp. Setting
INSTALLER SETTING Cooling temp. setting • At the 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. •...
Page 295: 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 on/off interval option during thermo off condition in cooling mode.
Page 296: 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.
Page 297 INSTALLER SETTING Default Default Function Description Range Boundary (Circuit1) (Circuit2) Outdoor1,Heat Heating lower ambient -10 °C Out1 ≤ Out2-1 (Out1) temp -25 ~ 35 °C Outdoor2,Heat Heating higher ambient Out2 ≥ Out1 +1 18 °C (Out2) temp Out2 ≤ Out3 -5 Outdoor3,Cool Cooling lower ambient Out3 ≥...
Page 298 INSTALLER SETTING In this mode, setting temperature will follow outdoor temperature automatically. This mode adds the cooling season function to the conventional weather dependent operation mode. Auto-Adjustable Heating Target Temperature Cooling Water Temp Target: LW/EW1 Room Air Temp Target: RA1 Temperature profile of weather dependent operation Water Temp Target: LW/EW2...
Page 299: Heater Priority
INSTALLER SETTING Heater priority • Heater priority: It is decided whether to use the boost heater for DHW operation and the backup heater for floor heating at the same time by condition. • Example: If the heater priority is set to 'Main+Boost heater ON', the backup heater and boost heater are turned on/off according to the control logic.
Page 300: 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 Default Range Min.
Page 301: 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 302: Tank Setting1
INSTALLER SETTING Tank setting1 • In the installer setting list, select tank setting 1 category, and press [OK] button to move to the detail screen. Value Default Range Min. temp. 5 °C 1 ~ 30 °C Comp. Limit Temp. 55 °C 40 ~ 58 °C NOTE "Max outdoor temp."...
Page 303: Tank Setting2
INSTALLER SETTING Tank setting2 • In the installer setting list, select tank setting 2 category, and press [OK] button to move to the detail screen. Value Default Range Hysteresis 3 °C 2 ~ 4 °C Heating priority Floor heating / DHW...
Page 304 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 43 °C….
Page 305: 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 306 INSTALLER SETTING Value Default Range Active time 30 min 5~95 min Stop time 30 min 0~600 min...
Page 307: Recirculation Time
INSTALLER SETTING Recirculation time • It is function to set recirculation water pump on/off interval option • In the installer setting list, select Recirculation time category, and press [OK] button to move to the detail screen. Value Default Range DHW recirculation Not use Use / Not use ON Time...
Page 308: 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 309 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 310: Pump Test Run
INSTALLER SETTING Pump test run The pump test run is to test run by operating the water pump for 1 hour. This function can be used for air purging through air vents and checking flow rate and others. • In the installer setting list, Pump Test run category, and press [OK] button to move to the detail screen.
Page 311: Frost Protection Temp
INSTALLER SETTING Frost Protection Temp. This function prevents the unit from freezing. This function sets the freeze protection temperature according to the concentration injected after injecting antifreeze. Make sure to use this function only when antifreeze is added. • Change setting values using [<, >(left/right)] button. •...
Page 312: 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 Description Auto (Default) Automatically operation ON with release hard lock Manual Keep operation OFF with hard lock NOTE...
Page 313: 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 314: 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 D/C Automatic When power is applied to the product, the unit when the contact point (Default) is on in Dry Contact installed state recognizes Dry Contact installation D/C Not Installed...
Page 315: Lg Therma V Configuration
INSTALLER SETTING LG Therma V Conﬁguration This function can be set to save the environment settings of the product for use in LG Therma V Configurator through SD Card. • In the Installer setting list, and select LG Therma V Configuration setting category, and press [OK] button to move to the detail screen.
Page 316: 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 317 INSTALLER SETTING Division Value Default Range Division Value Default Range Use / Not Use Use / Not Use Heat Temp. fixed Heat Temp. +5 °C 0 ~ 30 °C ES 1 ES 5 Cool Temp. fixed Cool Temp. -5 °C -30 ~ 0 °C DHW Temp.
Page 318 INSTALLER SETTING When Signal Mode of EES use type is selected, press the Digital Input Assignment button to set the energy state according to the input signal. Input Signal Output state Value TB_SG1 TB_SG2 Default Range fixed fixed ES3-ES8...
Page 319: Thermostat Control Type
INSTALLER SETTING Thermostat control type Set the type of thermostat control. • In the Installer setting list, and select Connectivity category, and press [OK] button to move to the detail screen. Type Heat & Cool (Default) Heat & Cool / DHW...
Page 320: Pump Operation Time
INSTALLER SETTING Pump operation time It is a function to show the water pump’s operation time for check mechanical life. • In the Installer setting list, and select Information category, and press [OK] button to move to the detail screen.
Page 321: Idu Operation Time
INSTALLER SETTING IDU operation time It is a function to show the Indoor Unit’s operation time for check mechanical life. • In the Installer setting list, and select Information category, and press [OK] button to move to the detail screen.
Page 322: 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 323: Modbus Gateway Memory Map
INSTALLER SETTING Modbus gateway memory map Baud Rate : 9 600 bps Stop Bit : 1 stop bit Parity : None Parity Coil Register (0x01) Register Description Value explanation 00001 Enable/Disable (Heating/Cooling) 0 : Operation OFF / 1 : Operation ON 00002 Enable/Disable (DHW) 0 : Operation OFF / 1 : Operation ON...
Page 324 INSTALLER SETTING Holding Register (0x03) Register Description Value explanation 40001 Operation Mode 0 : Cooling / 4 : Heating / 3 : Auto 0 : Water outlet temp. control 40002 Control method (Circuit 1/2) 1 : Water inlet temp. control 2 : Room air control Target temp (Heating/Cooling) 40003...
Page 325 INSTALLER SETTING Input Register (0x04) Register Description Value explanation 30001 Error Code Error Code 30002 ODU operation Cycle 0 : Standby(OFF) / 1 : Cooling / 2 : Heating 30003 Water inlet temp. [0.1 °C ×10] 30004 Water outlet temp. [0.1 °C ×10] 30005 Backup heater outlet temp.
Page 326: 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 327 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 “Auto”, you can set temperature of the boiler and hysteresis, respectively.
Page 328: 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 329: Current Flow Rate
INSTALLER SETTING Current ﬂow rate It is the function to check the current flow rate. • In the installer setting list, select Current Flow Rate category, and press [OK] button to move to the detail screen. The current flow rate can be checked. (Range : 7 ~ 80 L/min) •...
Page 330: Data Logging
INSTALLER SETTING Data logging This function is to check the operation and error history. • 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 331: [Chapter 9] Commissioning
• Refrigerant leakage degrades the performance. If leakage found, contact Installation leakage qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom of the Drainage unit. In this case, prepare drainage treatment (for example, vessel to contain treatment condensed dew) to avoid water drop.
Page 332: 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 333: 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 334: 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 335: Charge Of Refrigerant
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 (R32 refrigerant) Refrigerant Refrigerant cylinder...
Page 336: 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 337: 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 338: Troubleshooting For Error Code
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 339 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 340 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Open / Short • Bad connection of thermistor connector Problem in D-pipe • Soldered poorly • Defect of thermistor connector (Open/Short) temperature sensor • Internal circuit error •...
Page 341 COMMISSIONING Display Title Cause of error Check point & Normal condition code Fan RPM is less than 10 for 5 • Fan motor damage seconds from start-up operation. Fan lock error • Assembly condition abnormal Fan RPM is less than 40 in operation •...
Page 342 LG Electronics Inc. Single Point of Contact (EU/UK) : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands Manufacturer : LG Electronics Inc. 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA UK Importer : LG Electronics U.K. Ltd...

This manual is also suitable for:

Therma v monobloc 4 series Therma v monobloc s

LG THERMA V Monobloc 3 Series Owner's Manual

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for LG THERMA V Monobloc 3 Series

Summary of Contents for LG THERMA V Monobloc 3 Series