LG Therma V Series Installation Manual
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LG Therma V Series Installation Manual

Air-to-water heat pump
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INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
Please read this installation manual completely before installing the
product. Installation work must be performed in accordance with the
national wiring standards by authorized personnel only. Please retain
this installation manual for future reference after reading it thoroughly.
Original instruction
MFL67212828
Rev.00_051519
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
www.lg.com

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  • Page 1 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 MFL67212828 Rev.00_051519 Copyright © 2019 LG Electronics Inc. All Rights Reserved.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS PREFACE IMPORTANT SAFETY INSTRUCTIONS 12 INSTALLATION PART 13 GENERAL INFORMATION Model Information Model name and related information Parts and Dimensions Control Parts Control Panel Typical Installation Example Cycle Diagram 25 INSTALLATION Transporting the Unit Selection of the best location Installation Space Collective / Continuous Installation for roof top use...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 55 ACCESSORIES INSTALLATION Before Installation Thermostat 3rd Party Controller Central Controller DHW Tank Dry Contact External Controller - Setting up programmable digital input operation Remote Temperature Sensor External pump Wi-fi Modem Smart Grid 3Way Valve(A) 72 CONFIGURATION DIP Switch Setting 78 SERVICE SETTING How to enter service setting...
  • Page 4 TABLE OF CONTENTS Pump setting in heating Forced operation CN_CC Smart Grid(SG) IDU Address Verification CN_EXT Use External Pump Pump Prerun/Overrun Data logging Password Initialization Power Supply Blockage (SG Ready) Overview settings 115 COMMISSIONING Check List before Starting Operation Starting Operation Starting Operation flow chart Airborne Noise Emission Limiting concentration(R410A)

  • Page 5: Preface

    • Check points before starting operation are explained. Chapter 10 • Troubleshooting, maintenance, and error code list are presented to correct problems. REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.

  • Page 6: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS Read the precautions in this manual carefully before operating the unit. This symbol indicates that the Operation Manual should be read carefully. This symbol indicates that a service personnel should be handling this equipment with reference to the Installation Manual. READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
  • Page 7 IMPORTANT SAFETY INSTRUCTIONS • Always install a dedicated circuit breaker. - Improper wiring or installation may cause fire or electric shock. • Use the correctly rated breaker or fuse. - There is risk of fire or electric. • Do not modify or extend the power cable. - There is risk of fire or electric shock.
  • Page 8 IMPORTANT SAFETY INSTRUCTIONS Operation • Take care to ensure that power cable could not be pulled out or damaged during operation. - There is risk of fire or electric shock. • Do not place anything on the power cable. - There is risk of fire or electric shock. •...
  • Page 9 IMPORTANT SAFETY INSTRUCTIONS - There is risk of electric shock or fire. • Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or immediately after operation. - There is risk of burns or frostbite, personal injury. •...
  • Page 10 IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of unit. - Low refrigerant levels may cause failure of unit. • Keep level even when installing the unit. - To avoid vibration or water leakage. •...
  • Page 11 IMPORTANT SAFETY INSTRUCTIONS order to avoid a hazard. Installation work must be performed in accordance with the national wiring standards by authorized personnel only. • This equipment shall be provided with a supply conductor complying with the national regulation. • The instructions for service to be done by specialized personnel, mandated by the manufacturer or the authorized representative may be supplied in only one Community language which the specialized personnel understand.

  • Page 12: Installation Part

    INSTALLATION PART INSTALLATION PART Thank you for choosing LG Electronics Air-to-Water Heat Pump Before starting installation, please make it sure that all parts are found inside the product box. Item Image Quantity Installation Manual Remote Controller / Cable Sensor Holder...

  • Page 13: General Information

    GENERAL INFORMATION GENERAL INFORMATION With advanced inverter technology, is suitable for applications like under floor heating, under floor cooling, and hot water generation. By Interfacing to various accessories user can customize the range of the application. In this chapter, general information of is presented to identify the installation procedure.
  • Page 14 GENERAL INFORMATION Buyer Model Name Serial number Platform (Chassis code) 3 : U3 Chassis Classification U : Outdoor Unit Refrigerant A : R410A High Temperature Electrical ratings 1 : 1Ø, 220-240 V~ 50 Hz Heating Capacity (kW) 16 : 16 kW Classification U : Outdoor Unit H : Air to Water Heat Pump...

  • Page 15: Model Name And Related Information

    GENERAL INFORMATION Model name and related information Type Air-to water Heat Pump (For High Temperature) Model Unit Indoor Outdoor Power Supply Ø, V, Hz 1, 220-240, 50 kcal/h 13,760 Capacity Heating Btu/h 54,600 Net Weight kg(lbs) 84(185) 89(196) Type R134a R410A Refrigerant Amount...

  • Page 16: Parts And Dimensions

    GENERAL INFORMATION Parts and Dimensions Indoor unit : External (unit : mm)
  • Page 17 GENERAL INFORMATION Indoor unit : Internal (unit : mm) Description Name Remark Leaving Water Pipe Male PT 1 inch Entering Water Pipe Male PT 1 inch Refrigerant Pipe Ø 9.52 mm Refrigerant Pipe Ø 15.88 mm Control Box PCB and terminal blocks Flow Switch Minimum operation range at 15 LPM.
  • Page 18 GENERAL INFORMATION Outdoor unit : External Product Heating Capacity : 4-holes for anchor bolts 16 kW U3 Chassis (unit : mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill...

  • Page 19: Control Parts

    GENERAL INFORMATION Control Parts Control Box : Indoor Unit Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring The main PCB(Printed Circuit Board) controls the functioning Main PCB of the unit...

  • Page 20: Control Panel

    GENERAL INFORMATION Control Panel Operation display window Back button On/Off button OK button Up/Down/Left/Right button Wiring Diagram : Indoor Unit - Refer to the wiring diagram inside the control box. Circuit Diagram : Indoor Unit - Refer to the circuit diagram inside the front panel. Wiring Diagram : Outdoor Unit - Refer to the attached wiring diagram in the outdoor unit.
  • Page 21 GENERAL INFORMATION Wiring Diagram Indoor Unit...
  • Page 22 GENERAL INFORMATION Wiring Diagram Outdoor Unit...

  • Page 23: Typical Installation Example

    GENERAL INFORMATION Typical Installation Example Some installation scenes are presented for example. As these scenes are conceptual figures, installer should optimize the installation scene according to the installation conditions. Floor Heating only Fan coil unit Floor heating loop Radiator Floor Heating + Hot water Fan coil unit Floor heating loop Radiator...

  • Page 24: Cycle Diagram

    GENERAL INFORMATION Cycle Diagram Indoor Unit Water side Indoor Unit Ref, Out Ref, In Outdoor Unit Ref, Out Ref, In Male Water. Out Ref, In PT 1 Sanitary tank Water out Electronic Temperature Expansion sensor Valve Floor Flow Switch Strainer Pressure Heating Water.

  • Page 25: 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 26: Selection Of The Best Location

    INSTALLATION CAUTION Be very careful while carrying the product. • Do not have only one person carry product if it is more than 20 kg. • PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.
  • Page 27 INSTALLATION Select installation location considering following conditions to avoid bad condition when additionally performing defrost operation. - Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place with a high humidity in winter (near beach, coast, lake, etc). (Ex) Rooftop where sunshine always shines.

  • Page 28: Installation Space

    INSTALLATION Installation Space Indoor Unit - The following values are the least space for installation. If any service area is needed for service according to field circumstance, obtain enough service space. - The unit of values is mm. (Unit: mm) Piping space (front side) Service space...
  • Page 29 INSTALLATION In case of obstacles on the suction side Stand alone installation [Unit:mm] Collective installation [Unit:mm]...
  • Page 30 INSTALLATION In case of obstacles on the discharge side Stand alone installation Collective installation [Unit:mm] In case of obstacles on the suction and the discharge side Ú Obstacle height of discharge side is higher than the unit Stand alone installation L >...
  • Page 31 INSTALLATION Collective installation L > H L > H [Unit:mm] Ú Obstacle height of discharge side is lower than the unit Stand alone installation L ≤ H L ≤ H Collective installation L ≤ H L ≤ H [Unit:mm]...

  • Page 32: Collective / Continuous Installation For Roof Top Use

    INSTALLATION Collective / Continuous Installation for roof top use Space required for collective installation and continuous installation: When installing several units, leave space between each block as shown below considering passage for air and people. One row of stand alone installation [Unit:mm] Rows of collective installation (2 or more) - L should be smaller than H...

  • Page 33: Installation At Seaside

    INSTALLATION Installation at Seaside CAUTION • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.

  • Page 34: Indoor Unit

    INSTALLATION Foundation for Installation Indoor Unit - Fix the unit tightly with bolts as shown below so that the unit will not fall down due to earthquake. - Noise and vibration may occur from the floor or wall since vibration is transferred through the installation part depending on installation status.

  • Page 35: Installation Of Indoor Unit

    INSTALLATION OF INDOOR UNIT INSTALLATION OF INDOOR UNIT Electrical Wiring Two kind of cables should be connected to the outdoor unit : One is ‘Power cable’, the other one is ‘Connecting cable’. Power cable is a cable which is used to supply external electricity to the outdoor unit.
  • Page 36 INSTALLATION OF INDOOR UNIT 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 37 INSTALLATION OF INDOOR UNIT Point for attention regarding quality of the public electric power supply This equipment complies with respectively: - EN/IEC 61000-3-12 (1) provided that the short-circuit power Ssc is greater than or equal to the minimum Ssc value at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with respectively: Ssc greater than or equal to the minimum Ssc value.

  • Page 38: Drill A Hole In The Wall

    PIPING AND WIRING FOR OUTDOOR UNIT Procedures about refrigerant piping and electric wiring at the outdoor are described in this chapter. Most of procedures are similar to those of LG Air Conditioner. Refrigerant Piping Before starting refrigerant piping, constraints in pipe length and elevation should be examined.

  • Page 39: Preparation For Piping

    PIPING AND WIRING FOR OUTDOOR UNIT Preparation for Piping - Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. - Use the de-oxidised copper as piping materials to install. Step 1. Cut the pipes and the cable. Copper - Use the accessory piping kit or the pipes Slanted Uneven Rough...

  • Page 40: Connecting Pipe To Indoor Unit

    PIPING AND WIRING FOR OUTDOOR UNIT Connecting Pipe to Indoor Unit Connecting pipe to the indoor unit is two steps. Read following directions carefully. Step 1. Pre-tightening. - Align the center of the pipes and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings...
  • Page 41 PIPING AND WIRING FOR OUTDOOR UNIT Step 2. Tightening - Align the center of the pipes and sufficiently Continuous tighten the flare nut by hand. - Tighten the flare nut with a wrench until the wrench clicks. - Tightening torque is as following. Outside diameter Torque kgf·m...
  • Page 42 PIPING AND WIRING FOR OUTDOOR UNIT Step 3. : Use cable clamps (or cord clamps) to prevent unintended move of Power cable and Connecting cable. Step 4. : Reassemble the side panel to the outdoor unit by fastening screws. CAUTION After checking and confirming following conditions, start wiring work.

  • Page 43: Finalizing

    PIPING AND WIRING FOR OUTDOOR UNIT CAUTION The Power cord connected to the unit should be selected according to the following specifications. Finalizing After pipes are connected and electric cables are wired, pipe forming and some tests are remained. Especially, careful attention is required while proceeding leakage test because the Seal a small leakage of the refrigerant effects degrade of performance directly.

  • Page 44: Leakage Test And Evacuation

    PIPING AND WIRING FOR OUTDOOR UNIT Leakage test and Evacuation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. - Pressure in the system rises. - Operating current rises. - Cooling(or heating) efficiency drops. - Moisture in the refrigerant circuit may freeze and block capillary tubing. - Water may lead to corrosion of parts in the refrigeration system.
  • Page 45 PIPING AND WIRING FOR OUTDOOR UNIT Evacuation - Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump.

  • Page 46: Electrical Wiring

    PIPING AND WIRING FOR OUTDOOR UNIT Electrical Wiring General Consideration Followings are should be considered before beginning indoor unit wiring. - Field-supplied electrical components such as power switches, circuit breakers, wires, terminal boxes, etc should be properly chosen with compliance with national electrical legislation or regulation.
  • Page 47 PIPING AND WIRING FOR OUTDOOR UNIT Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (230 V AC) - N : Neutral (230 V AC) - BR : Brown , WH : White , BL : Blue , BK : Black Terminal Block 1 1(L) 2(N)
  • Page 48 PIPING AND WIRING FOR OUTDOOR UNIT How to connect wirings Communication cable Power cable Terminal block Terminal block Terminal block of outdoor unit of indoor unit of indoor unit 3(A) 4(B) ODU. B ODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 Communication cable Power cable...
  • Page 49 PIPING AND WIRING FOR INDOOR UNIT PIPING AND WIRING FOR INDOOR UNIT Procedures about water piping and electric wiring at the indoor unit are described in this chapter. Water piping and water circuit connection, water charging, pipe insulations will be shown for water piping procedures.
  • Page 50 PIPING AND WIRING FOR INDOOR UNIT 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 indoor unit, but also in the under floor water circuit, sanitary water tank circuit, FCU water circuit, and any other water circuits controlled by the product.

  • Page 51: Piping And Wiring For Indoor Unit

    PIPING AND WIRING FOR INDOOR UNIT 6. Install the air vent (5) at the top of the water pipe. 7. Install a thermometer (6) and pressure gauge (7) at the inlet and outlet of the water pipe. 8. Install the drain valve (8) that can be used for draining the water inside when replacing the part or providing service.
  • Page 52 PIPING AND WIRING FOR INDOOR UNIT Installation of water tank water tank temperature sensor (7) Heat shut-off valve (2) exchange Expansion tank (5) coil (8) Pump (1) water tank (9) Pressure gauge (4) (Indirect heating type) Flexible joint (3) Water supply valve (6) Installation of floor heating shut-off valve (2) Expansion tank (5)

  • Page 53: Water Pump Capacity

    PIPING AND WIRING FOR INDOOR UNIT 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 54: Frost Protection

    PIPING AND WIRING FOR INDOOR UNIT Frost protection In areas of the country where entering water temperatures drop below 0 °C, the water pipe must be protected by using an approved antifreeze solution. Consult your AWHP unit supplier for locally approved solutions in your area. Calculate the approximate volume of water in the system. (Except the AWHP unit.) And add six liters to this total volume to allow for the water contained in AWHP unit.

  • Page 55: 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...
  • Page 56 ACCESSORIES INSTALLATION Accessories supported by 3rd party Companies Item Purpose Specification Heating-Only type (230 V AC) Thermostat To control by air temperature Cooling/Heating type (230 V AC with Mode selection switch) To connect external controller using Party Controller modbus protocol (A) : To control water flow for hot water heating or floor heating / To control water flow when installing...

  • Page 57: 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 58 ACCESSORIES INSTALLATION Direct Sun ray contact area 5 ft (1.5 m) Thermostat General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Mechanical 230 V~ Heating Only (3) Electrical 230 V~ Heating Only (3) (1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
  • Page 59 ACCESSORIES INSTALLATION How to wire thermostat Follow below procedures Step 1 ~ Step 4. 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 60: 3Rd Party Controller

    3rd Party Controller The product can also be linked to 3rd party controller. You can connect external controllers using Modbus protocol except for LG controller. If 3rd party controller is used, LG controller is not applied to AWHP simultaneously. How to install 3rd party controller Follow below procedures step 1 ~ step 4.

  • Page 61: Central Controller

    ACCESSORIES INSTALLATION Central Controller The product can communicate and control through the central controller. The following functions can be controlled in the central control linked state (Operation/Stop, Desired temperature, Hot water operation / stop, Warm water temperature, Full lock, Etc) How to Installation PI485 Fix the PI485 PCB as shown in below images.

  • Page 62: 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 sanitary water tank requires following considerations : - Sanitary water tank should be located at the flat place.

  • Page 63: 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 64 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 65: 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 66: Remote Temperature Sensor

    ACCESSORIES INSTALLATION Remote Temperature Sensor Remote temperature sensor can be installed any place a user wants to detect the temperature. • The function is not available for some products. Installation condition Role and constraint while installation of remote air temperature sensor is very similar to that of thermostat.
  • Page 67 ACCESSORIES INSTALLATION Indoor PCB Fixing screws 60 mm CN_ROOM CN_ROOM Indoor PCB Indoor PCB Sensor [fig. 1] [fig. 2] Fixing the Step 6. Integrate the remote temperature sensor with the screws Remote Sensor as the order of arrows. CAUTION • Choose the place where the average temperature can be measured for the unit operates. •...

  • Page 68: 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 69: 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 70: Smart Grid

    ACCESSORIES INSTALLATION Smart Grid This product provides SG Ready function for users. It enables to stop internal operation(Heating / DHW) and control target temperature depending on input signal from power provider. How to install smart grid Follow below procedures step 1 ~ step 3. Step 1.

  • Page 71: 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 72: Configuration

    CONFIGURATION CONFIGURATION is designed to satisfy various installation environment, it is important to set up system correctly. If not configured correctly, improper operation or degrade of performance can be expected. DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch •...
  • Page 73 CONFIGURATION DIP Switch Information Option Switch 2 Description Description Setting Setting Default Default As Master Role when central controller is equipped As Slave Unit + Outdoor unit is installed Unit + Outdoor unit Accessory installation + DHW tank information is installed DHW tank Only Cycle Heating Only...
  • Page 74 CONFIGURATION Option Switch 1 Description Setting Default Description Description Setting Setting Default Default As Master MODBUS As Slave Common 3 party MODBUS Function SIEMENS Reserved Reserved Reserved Reserved Option Switch 3 Description Description Setting Setting Default Default Remote sensor is not installed Description Setting Default...
  • Page 75 CONFIGURATION DIP Switch Information Indoor Cycle PCB ※All pins are reserved (Don’t select) Default OFF is selected ON is selected Outdoor Cycle PCB ※All pins are reserved (Don’t select) Default OFF is selected ON is selected...
  • Page 76 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 77 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 78: 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 79: 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 80: 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 81: 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 82: 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 83 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 warrenty. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [∧(up)] button for 3 seconds to enter the password input screen for the installer setting.
  • Page 84 INSTALLER SETTING Installer setting • You can set the product user functions. • Some functions may not be displayed/operated in some product types. Function Description 3 Minutes Delay Factory use only Selection for setting temperature as air temperature or leaving Select Temperature Sensor water temperature or air+leaving water temperature Dry contact function is the function that can be used only when the...

  • Page 85: Installer Setting

    INSTALLER SETTING Function Description At the leaving water control in heating mode, the control reference Heating temp. setting water temperature position setting Pump setting in heating Set water pump on / off delay option in heating mode Water pump off After 20 consecutive hours, disable / enable the Forced operation logic that drives the water pump by itself It is the function to set whether to install (use) Dry Contact.

  • Page 86: 86 3 Minutes Delay

    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 87: 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 88: 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 89: 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 90: 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 91: 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 92: 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 93: Dhw Set Temp

    INSTALLER SETTING DHW set temp Determine heating setting temperature range when DHW temperature is selected as setting temperature • In the installer setting list, select DHW set temp. category, and press [OK] button to move to the detail screen. Value Range Max.

  • Page 94: 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 viruses 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 95: Tank Setting 1

    INSTALLER SETTING Tank setting 1 • In the installer setting list, select tank setting 1 category, and press [OK] button to move to the detail screen. Value Range Max outdoor temp 80~40 Min temp 20~1...

  • Page 96: Tank Setting 2

    INSTALLER SETTING Tank setting 2 • In the installer setting list, select tank setting 2 category, and press [OK] button to move to the detail screen. Value Range Hysteresis Heating priority Floor heating / DHW...
  • Page 97 INSTALLER SETTING • Tank setting 1, 2 Descriptions for each parameters are as following. - Min temp. : temperature gap from Max outdoor temp. - Max outdoor temp. : maximum temperature generated by AWHP compressor cycle. - Example : If Min temp. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see the graph) will be started when the water tank temperature is below 45 °C….

  • Page 98: 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 99: 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 100: 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 101: 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 •...

  • Page 102: 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 103: Forced Operation

    INSTALLER SETTING Forced operation • If the product is not used for a long time, the product will be forced to operate to prevent pump failure and PHEX freezing • Water pump off After 20 consecutive hours, disable / enable the logic that drives the water pump by itself •...

  • Page 104: 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 105: Smart Grid(Sg)

    INSTALLER SETTING Smart Grid(SG) It is the function to enable / disable the SG Ready function and to set the reference value at SG2 step. • In the installer setting list, select Smart Grid(SG) category, and press [OK] button to move to the detail screen.

  • Page 106: Idu Address Verification

    INSTALLER SETTING IDU Address Verification It is function to check the result of Auto Addressing of outdoor unit with remote control. IDU address setting function is available from indoor unit. • In the installer setting list, select IDU Address Verification, and press [OK] button to move to the detail screen.

  • Page 107: 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 108: 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. Value Not use...

  • Page 109: Pump Prerun/Overrun

    INSTALLER SETTING Pump Prerun/Overrun Pump Prerun operates to ensure sufficient flow before the compressor is operated. This is a function that allows heat exchange to work smoothly. Pump Overrun is a function to prevent water pump failure and to help mechanical life. If the water pump has been off for 20 hours, Water pump will operate for the set time Value Default...

  • Page 110: 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 111: 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 112: Power Supply Blockage (Sg Ready)

    INSTALLER SETTING Power Supply Blockage (SG Ready) The heat pump operated automatically by the power supply status signals from power supply companies. This function can respond to European countries’ special tariff for heat pump using on a smart grid. Power Supply Status Operating Mode 0:0 [Normal Operation] The heat pump works at maximum...

  • Page 113: Overview Settings

    INSTALLER SETTING Overview settings Menu Structure Menu Sub function ............82 Service contact ............83 Model information ............84 RMC version lnformation ............85 Open source license Installer ............88 3 Minutes Delay ............89 Select Temperature Sensor ............90 Dry Contact Mode ............91 Central Control Address ............92 Pump Test run ............93...
  • Page 114 INSTALLER SETTING .............109 CN_EXT .............110 Use External Pump .............111 Pump Prerun/Overrun .............112 Data logging .............113 Password Initialization...

  • Page 115: Commissioning

    • There should be no apparently damaged parts inside the unit. • Refrigerant leakage degrades the performance. If leakage found, Refrigerant leakage contact qualified LG air conditioning installation person. Product Installation • While cooling operation, condensed dew can drop down to the Drainage treatment bottom of the unit.

  • Page 116: 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 117: 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 118: 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 119 COMMISSIONING Troubleshooting for Error Code Indoor Unit - This function displays the disorder types at the self diagnostics and the occurrence of the disorder for the product. - The disorder display shows the code in the following table on the red/green LED of the wired remote controller and outdoor unit control board.
  • Page 120 COMMISSIONING Inverter PCB error display method Red LED means error number 10 digits, and green LED means 1 digit, and if red and green blink at the same time, it means the unit of 100. Ex) Inverter compressor IPM defect Error : error number 21 Error LED 1 LED 2...
  • Page 121 COMMISSIONING Outdoor Unit • Error Indicator - This function indicates types of failure in self-diagnosis and occurrence of failure for air condition. - Error mark is displayed on display window of indoor units and wired remote controller, and 7- segment LED of outdoor unit control board as shown in the table. - If more than two troubles occur simultaneously, lower number of error code is first displayed.
  • Page 122 COMMISSIONING Error No. Error Type Main Reasons Inverter compressor suction pipe Inverter compressor suction temperature temperature sensor defect sensor disconnection or short circuit Defective IPM Temperature Disconnection or short circuit on IPM Sensor temperature sensor of the outdoor unit Communication error : inverter PCB ’ Failing to receive inverter signal at main PCB Main PCB of Outdoor Unit...
  • Page 124 [Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA...

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