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 MFL68681836 Rev.02_101123 Copyright © 2022 - 2023 LG Electronics Inc. All Rights Reserved.
Page 2: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS PREFACE [Chapter 1] SAFETY INSTRUCTIONS [Chapter 2] INSTALLATION PART [Chapter 3] GENERAL INFORMATION Model Information Related Information Parts and Dimensions Control Parts Control Panel Typical Installation Example Cycle Diagram Water cycle [Chapter 4] INSTALLATION OF OUTDOOR UNIT Conditions where Outdoor Unit is Installed Drill a Hole in the Wall Transporting the Unit...
Page 3 TABLE OF CONTENTS Ventilation requirements Electrical Wiring [Chapter 6] PIPING AND WIRING FOR OUTDOOR UNIT Refrigerant Piping Preparation for Piping Connecting Pipe to Indoor Unit Connecting Pipe to Outdoor Unit Finalizing Leakage test and Evacuation Electrical Wiring [Chapter 7] PIPING AND WIRING FOR INDOOR UNIT Water Piping and Water Circuit Connection Connection to the Domestic hot water system Connection to the Heating system...
Page 4 How to enter installer setting Installer setting Select Temperature Sensor Use Heating Tank Heater Mixing Circuit Use External Pump RMC master/slave LG Therma V Conﬁguration Forced operation Pump Prerun/Overrun Water Flow Control Energy Monitoring Anti-Freezing Option 1 Password Reset Heating temp. setting Air heating set temp.
Page 5 TABLE OF CONTENTS Cooling temp. setting Air cooling set temp. Water cooling set temp. Water supply off temp. during cooling Hysteresis Cooling Water Hysteresis Room Air(Cooling) Pump setting in cooling Seasonal auto temp. DHW set temp. Tank disinfection setting 1, 2 Tank setting 1 Tank setting 2 DHW time setting...
Page 6: Preface
• 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. * The feature may be vary according to the type of model.
Page 7: [Chapter 1] Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS Read the precautions in this This appliance is filled with manual carefully before flammable refrigerant (R32) operating the unit. This symbol indicates that a This symbol indicates that service personnel should be the Operation Manual should handling this equipment with be read carefully.
Page 8 SAFETY INSTRUCTIONS • Always ground the unit. - There is risk of fire or electric shock. • Install the panel and the cover of control box securely. - There is risk of fire or electric shock. • Always install a dedicated circuit and breaker. - Improper wiring or installation may cause fire or electric shock.
Page 9 SAFETY INSTRUCTIONS • Do not touch leaked refrigerant directly. - There is risk of frostbite. • Copper in contact with refrigerants shall be oxygen-free or deoxidized, for example Cu-DHP as specified in EN 12735-1 and EN 12735-2. • Compliance with national gas regulations shall be observed. (for R32) •...
Page 10 SAFETY INSTRUCTIONS • Pipe-work shall be protected from physical damage. (for R32) • Mechanical connections (mechanical connectors or flared joints) shall be accessible for maintenance purposes. (for R32) Operation • Take care to ensure that power cable could not be pulled out or damaged during operation.
Page 11 SAFETY INSTRUCTIONS • Stop operation and close the window in storm or hurricane. If possible, remove the unit from the window before the hurricane arrives. - There is risk of property damage, failure of unit, or electric shock. • Do not open the front cover of the unit while operation. (Do not touch the electrostatic filter, if the unit is so equipped.) - There is risk of physical injury, electric shock, or unit failure.
Page 12 SAFETY INSTRUCTIONS • Ventilate the unit from time to time when operating it together with a stove, etc. - There is risk of fire or electric shock. • Turn the main power off when cleaning or maintaining the unit. - There is risk of electric shock. •...
Page 13 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 14 SAFETY INSTRUCTIONS • Use a firm stool or ladder when cleaning or maintaining the unit. - Be careful and avoid personal injury. • Do not turn on the breaker or power under condition that front panel cabinet, top cover, control box cover are removed or opened.
Page 15: [Chapter 2] 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. INDOOR UNIT BOX Item Image Quantity Item Image Quantity Indoor unit...
Page 16 INSTALLATION PART INSTALLATION TOOLS Figure Name Figure Name Screw driver Ohmmeter Electric drill Hexagonal wrench Measuring tape, Knife Ammeter Hole core drill Leak detector Thermometer, Spanner Horizontal meter Torque wrench Flaring tool set Manifold Gauge Vacuum Pump Pliers...
Page 17: [Chapter 3] General Information
Before beginning installation, read this chapter carefully and find helpful information on installation. 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. Model Information Factory Model Name...
Page 18 GENERAL INFORMATION Buyer Model Name Outdoor unit Indoor unit Type Refrigerant Type Refrigerant 1 2 3 4 5 6 8 9 1 2 3 4 5 6 8 9 10 Split H U 09 1 M R U4 4 Split H N 09 1 3 T N K 0 Signification Signification...
Page 19: Related Information
* IWT : Integrated water tank indoor unit - 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. - Additional Information : Serial number is refer to the barcode on the product.
Page 20: Parts And Dimensions
GENERAL INFORMATION Parts and Dimensions Indoor unit : External (unit : mm) * The feature may be vary according to the type of model.
Page 21 GENERAL INFORMATION Description Part Name Remark Refrigerant gas pipe SAE 5/8" Refrigerant liquid pipe SAE 3/8" Heating circuit outlet pipe Female G1" according to ISO228-1(parallel pipe threads) Heating circuit inlet pipe Female G1" according to ISO228-1(parallel pipe threads) Domestic cold water inlet pipe Female G1"...
Page 22 GENERAL INFORMATION Indoor unit : Internal (unit : mm)
Page 23 GENERAL INFORMATION Description Part Name Remark DHW Tank Domestic hot water tank(200L) Heater Electric heater (3kW) Flow sensor Flow metering sensor 3Way valve For DHW / Heating Pressure sensor Pressure sensor Expansion vessel 8L for Heating circuit DHW tank sensor Temperature sensor Heat exchanger 1 Coil Heat Exchange (water / DHW)
Page 24 GENERAL INFORMATION Outdoor unit : External Product Heating Capacity : 5 kW, 7 kW, 9 kW (unit : mm) Chassis : U36A 4-holes for anchor bolts Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grille...
Page 25: Control Parts
GENERAL INFORMATION Control Parts Control Box : Indoor Unit 1Ø Electric Heater Model Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring Unit ELB The ELB protects the unit against overload or short circuit Heater PCB (Printed Circuit Board) controls the functioning of Heater PCB (Relay) the backup heater The main PCB (Printed Circuit Board) controls the functioning...
Page 26: Control Panel
GENERAL INFORMATION Control Panel 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 27: 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 28 GENERAL INFORMATION CASE 2 : Connecting mixed Circuit [Circuit 2] Mixing Circuit Mixing circuit temp. sensor Domestic hot water City water Indoor Indoor Indoor Outdoor Mix Kit Floor heating loop Floor heating loop Buffer Tank M / F [Circuit 1] Direct Circuit Hydronic separator Outdoor Unit...
Page 29 GENERAL INFORMATION CASE 3 : Connecting 3 Party Boiler Domestic hot water City water Outdoor Indoor Buffer M / F Tank Boiler Floor Floor Floor heating loop heating loop heating loop Outdoor Unit Indoor Unit NOTE • 3 party Boiler - You can control the boiler automatically and manually by comparing the outside temperature and the set temperature.
Page 30: Cycle Diagram
GENERAL INFORMATION Cycle Diagram : Cooling : Heating <Water Side> <Refrigerant Side> Shower City Water Space heating Field supply Re-Circulation Shut-off Shut-off pump Valve Valve (Field supply) Field supply Expansion Tank Pressure Switch Mufﬂer Accumulator Drain Pan & hole EEV1 Drain hose EEV3 (Inj.EEV)
Page 31: Water Cycle
GENERAL INFORMATION Water cycle : Cooling <Water Side> : Heating Shower City Water Space heating Outdoor Unit Field supply Re-Circulation Shut-off Shut-off pump Valve Valve (Field supply) Field supply Expansion Tank Drain Pan & hole Drain hose Description Category Symbol Meaning PHEX gas temp.
Page 32: Installation Of Outdoor Unit
INSTALLATION OF OUTDOOR UNIT INSTALLATION OF OUTDOOR UNIT The outdoor unit of is installed outside to exchange heat with ambient air. Therefore, it is important to secure proper space around the outdoor unit and care for specific external conditions. This chapter presents a guide to install the outdoor unit, make a route to connect with the indoor, and what to do when installed around seaside.
Page 33: Transporting The Unit
INSTALLATION OF OUTDOOR UNIT 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 34 INSTALLATION OF OUTDOOR UNIT 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 35: Installation At Seaside
INSTALLATION OF OUTDOOR UNIT 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 product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.
Page 36: Seasonal Wind And Cautions In Winter
INSTALLATION OF OUTDOOR UNIT Seasonal Wind and Cautions in Winter In areas with low ambient temperature, high humidity, or heavy snowfall, particular measures are required to ensure that the unit operates properly. - Install the unit so that it does not come into direct contact with snow. If snow accumulates and freezes in the air inlet, the system may malfunction.
Page 37: Installation Of Indoor Unit
INSTALLATION OF INDOOR UNIT INSTALLATION OF INDOOR UNIT The indoor unit of is installed inside where terminal of under floor water pipe cycle and refrigerant pipe from the outdoor unit are accessible at the same time. In this chapter conditions for installation place is described. In addition, considerations when installing accessories or 3 party accessories are described, too.
Page 38 INSTALLATION OF INDOOR UNIT Service Space - Ensure that the spaces indicated by arrows around front, right, and top side. - Wider spaces are preferred for easy maintenance and piping. - If minimum service space is not secured, air circulation can be troubled and internal parts of the indoor unit can be damaged by overheating.
Page 39: Transporting The Unit
INSTALLATION OF INDOOR UNIT Transporting the Unit CAUTION • The device must be transported with transport devices. • Secure the device during transport to prevent damage. • The device must not be stacked and other objects must not be placed on it. •...
Page 40: Connecting Condensate Drainage
INSTALLATION OF INDOOR UNIT Connecting Condensate drainage ② Step 1. Before the indoor unit’s final positioning, Insert the drainage hose into the drain ①, which leads to the sinkhole or storm drain. Seal the gap with a suitable gasket. Step 2. Then push the appliance to the wall ②. CAUTION •...
Page 41: Floor Area Requirement : Indoor Unit
INSTALLATION OF INDOOR UNIT Floor area requirement : Indoor unit ) is in system ≥1.842 kg, additional minimum floor area requirements - If the total refrigerant charge (m is complied in the following flow chart. Room A Room B > 0.5 * Anv More than >...
Page 42: Ventilation Requirements
INSTALLATION OF INDOOR UNIT Ventilation requirements • Two ventilation openings, one at bottom, another at top, for ventilation purposes are made between room A and room B. • Bottom opening : - Must comply to the minimum area requirement of Anv - Opening must be located 300mm from the floor.
Page 43 INSTALLATION OF INDOOR UNIT Table 2 - Minimum floor area Minimum Floor Area A Minimum Floor Area A Total Ref. Total Ref. Amount m (kg) Amount m (kg) Based on h 1.2 m Based on h 1.2 m 1.84 7.20 2.78 16.44 1.86...
Page 44 INSTALLATION OF INDOOR UNIT Table 3 - Minimum venting opening area for natural ventilation Minimum opening area Anv ) (Based on h 1.2 m) room Total Ref. Amount m (kg) NOTE • The value of "Release height (h )“ in this unit is considered 1200 mm to comply to IEC 60335-2-40:2013 A1 2016 Clause GG2.
Page 45: Electrical Wiring
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 46 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 47 INSTALLATION OF INDOOR UNIT Point for attention regarding quality of the public electric power supply - 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 ≤16 A of >...
Page 48: Piping And Wiring For Outdoor Unit
Procedures about refrigerant piping, water piping and electric wiring at the outdoor are described in this chapter. Most of procedures are similar to those of LG Air Conditioner. *Pipes and wires should be purchased separately for installation of the product.
Page 49: 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 50: Connecting Pipe To Indoor Unit
PIPING AND WIRING FOR OUTDOOR UNIT Connecting Pipe to Indoor Connecting Pipe to Outdoor Unit Unit Connecting pipe to the indoor unit is two Connecting pipe to the outdoor unit is five steps. Read following directions carefully. steps including PCB setting. Step 1.
Page 51 PIPING AND WIRING FOR OUTDOOR UNIT Wiring Procedure for Power Cable Step 2. Tightening and Connecting Cable - Align the center of the pipes and sufficiently tighten the flare nut by hand. Step 1. Disassemble the side panel from the - Tighten the flare nut with a wrench until the outdoor unit by loosing screws.
Page 52 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. Domestic Water In Domestic Water Out Water...
Page 53: 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 54: 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 55 PIPING AND WIRING FOR OUTDOOR UNIT Evacuation Indoor unit - 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.
Page 56: 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 57 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 For 1Ø...
Page 58 PIPING AND WIRING FOR OUTDOOR UNIT CAUTION You should separate the communication wiring, in case of communication wiring length is over 40 m. Shield Separation cable Power Supply Communication Wiring Connecting with Outdoor Unit 1(L) 2(N) 3 Terminal block at outdoor unit 1(L) 2(N) 3 The feature may be changed according to the type of model.
Page 59 PIPING AND WIRING FOR OUTDOOR UNIT Backup Heater Wiring CAUTION Power Cable Specification : The power cord connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4(Rubber insulated cord, type 60245 IEC 66 or H07RN-F) 1 Phase(Ø) 3 Phase(Ø) NORMAL...
Page 60: Piping And Wiring For Indoor Unit
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 61 PIPING AND WIRING FOR INDOOR UNIT WARNING Water condensation on the floor While cooling operation, it is very important to keep leaving water temperature higher than 16 °C. Otherwise, dew condensation can be occurred on the floor. If floor is in humid environment, do not set leaving water temperature below 18 °C. Water condensation on the radiator While cooling operation, cold water may not flow to the radiator.
Page 62: Connection To The Domestic Hot Water System
PIPING AND WIRING FOR INDOOR UNIT Connection to the Domestic hot water system The hydraulic connection has to be installed in accordance with the national and local regulations For connecting DHW to enable the water flow in full force. To prevent water leakage, install a drain through the floor below the level of the device.
Page 63 PIPING AND WIRING FOR INDOOR UNIT Shut-off valve (Field Supply) Check valve (Field Supply) Pressure reducing valve (Field Supply) Circulation pump (Field Supply) Safety valve (10 bar) Expansion vessel (Field Supply) Domestic hot water(DHW) Domestic cold water DHW re-circulation (Optional) CAUTION •...
Page 64 PIPING AND WIRING FOR INDOOR UNIT Setting the pressure for the expansion vessel for DHW NOTE • The cold DHW connection must be fitted with an expansion vessel suitable for drinking water. The selection and installation must be in accordance with the standard DIN 4807 T5. •...
Page 65: Connection To The Heating System
PIPING AND WIRING FOR INDOOR UNIT Connection to the Heating system The selection of circulation pumps, valves, safety elements and pipes has to be performed by the design engineer according to the heating/cooling capacity of the device and minimum water flow rate.
Page 66 PIPING AND WIRING FOR INDOOR UNIT Water Volume and Expansion Vessel Pressure - The expansion vessel must be dimensioned in accordance with standard EN 12828. The integrated vessel has a volume of 8 liters. If the expansion volume is not enough, and additional vessel must be installed externally (Field supply).
Page 67: Water Volume And Expansion Vessel Pressure
PIPING AND WIRING FOR INDOOR UNIT 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 68: Water Charging
PIPING AND WIRING FOR INDOOR UNIT Water Charging For water charging, please follow below procedures. For DHW Tank Step 1. Open all hot water tap. Step 2. Open the cold water supply valve to fill DHW Tank. Step 3. Close all water taps after air is purged. For space heating Step 1.
Page 69 PIPING AND WIRING FOR INDOOR UNIT Pipe Insulation Purpose of water pipe insulation is : - To prevent heat loss to external environment - To prevent dew generation on the surface of the pipe in cooling operation - Minimum insulation thickness recommendations ensure correct operation of the product, but local regulations may vary and must be followed.
Page 70: Water Pump Capacity
PIPING AND WIRING FOR INDOOR UNIT Water pump Capacity The water pump is 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 71: Performance Curve
PIPING AND WIRING FOR INDOOR UNIT Performance curve 5, 7, 9 kW MGQ62321902 : UPM3K GEO 20 - 75 CHBL QH Chart Q [m WARNING Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.
Page 72: Water Quality
PIPING AND WIRING FOR INDOOR UNIT 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 73: Accessories Installation
The Product is designed to work with the following LG accessories. Regarding any other compatible accessories refer to Product Databook or ask your local dealer. Accessories supported by LG Electronics Item...
Page 74: Before Installation
ACCESSORIES INSTALLATION Accessories supported by 3 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) • Mixing valve Mix Kit To use mixing circuit •...
Page 75: Thermostat
ACCESSORIES INSTALLATION Thermostat Thermostat is generally used to control the product by air temperature. When thermostat is connected to the product, the product operation is controlled by the thermostat. Installation condition CAUTION • USE 220-240 V~ Thermostat • Some electro-mechanical type thermostat has internal delay time to protect compressor. In that case, mode change can takes time more than user's expectation.
Page 76 ACCESSORIES INSTALLATION General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only (3) Mechanical (1) 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) Heating Only (3) Electrical (2) 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...
Page 77 ACCESSORIES INSTALLATION How to wire thermostat 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 78: 2Nd Circuit
ACCESSORIES INSTALLATION Circuit The 2 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. [Install Guide Mixing circuit Heating]] Circuit 2 Convector...
Page 79 ACCESSORIES INSTALLATION How to Wire Mixing Kit 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 80 ACCESSORIES INSTALLATION [Thermistor for Mixing circuit] Sensor Sensor Holder Sensor Connector Follow below procedures step 1 ~ step 4. Step 1. Install sensor connector to discharge pipe of mix pump. (Welding must be performed to connect the sensor connector to the pipe) Step 2.
Page 81: 3Rd Party Boiler
ACCESSORIES INSTALLATION Party Boiler The product can be used by connecting an Auxiliary boiler. 3 party boiler can be controlled by manually via RS3 remote controller or automatically itself by means of comparing the outside air temperature and the preset temperature. How to wire 3 party boiler Follow below procedures step 1 ~ step 3.
Page 82: 3Rd Party Controller
Party Controller The product can also be linked to 3 party controller. You can connect external controllers using Modbus protocol except for LG controller. If 3 party controller is used, LG controller is not applied to AWHP simultaneously. How to wire 3 party controller Follow below procedures step 1 ~ step 4.
Page 83: 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. - For detailed installation method refer to meter interface Installation Manual.
Page 84: Central Controller
/ stop, Warm water temperature, Full lock, Etc) LG Central controller Item Purpose Model ACP 5 PACEZA000 To control AWHP using LG central controller AC Smart 5 PACS5A000 ACP Ez Touch PACP5A000 Accessories for Central controller Item Purpose...
Page 85 ACCESSORIES INSTALLATION How to Installation PI485 Fix the PI485 PCB as shown in below images. For detailed installation method refer to PI485 Installation Manual Product Heating Capacity : 5 kW, 7 kW, 9 kW U36A Chassis - For detailed installation instructions, refer to the manual included in the accessories. How to Installation Modbus gateway Connect the Modbus gateway as shown in below diagram.
Page 86: 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 87 ACCESSORIES INSTALLATION Step 3. Before installing the dry contact PCB inside control box, Remove the marking label on control box for using the holes. Step 4. Secure the dry contact PCB using the provided supporters in control box. Step 5. Connect cable to the unit PCB(CN_CC) fully. Step 6.
Page 88 ACCESSORIES INSTALLATION [Setting of Contact Signal Input - PDRYCB320] • 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 89: External Controller - Setting Up Programmable Digital Input Operation
ACCESSORIES INSTALLATION External Controller - Setting up programmable digital input operation If you require to 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 90: 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 91 ACCESSORIES INSTALLATION How to Install Remote Temperature Sensor [Parts of Remote Temperature Sensor] Connection wire Screw(to fix remote sensor) Remote sensor Follow below procedures step 1 ~ step 6. Step 1. Decide where the remote temperature sensor is Installed. Then, Determine the location and height of the fixing screws in fig.
Page 92: External Pump
ACCESSORIES INSTALLATION External pump External pump can be required when the room to take floor heating is too long or the pressure drop of heat emitter is too large to produce the required flow rate. Also, the external pump shall be installed to assist water circulation when the buffer tank is installed.
Page 93: 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 Holder...
Page 94: 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 95: Digital Input For Energy Saving (Ess, Smart Grid)
ACCESSORIES INSTALLATION Digital Input for energy saving (ESS, Smart Grid) This product provides two digital inputs (ES1/ES2) that can be used to switch between energy states when not using Modbus RTU (CN_MODBUS). Available Energy States There are 8 energy states available in total. Four different states can be triggered using the 230V-inputs –...
Page 96: 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 97: Domestic Hot Water Expansion Vessel - Integrated Into The Unit
ACCESSORIES INSTALLATION Domestic hot water expansion vessel – integrated into the unit How to install DHW expansion vessel (Field Supply) ① DHW expansion vessel (Field Supply) ② Connection hose ① ② Step 1. Screw the hose to the dedicated port ③ inside of the unit. ⑥...
Page 98: 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 gauge inside the unit - Pressure of Supplying water should be Under 3.0 bar Hydraulic pressure...
Page 99: [Chapter 9] 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 100 CONFIGURATION DIP Switch Information Option Switch 2 Description Description Setting Setting Default Default As Master Group control As Slave DHW integrated indoor unit Accessory installation + Outdoor unit is installed information Reserved Heating Only Cycle Heating & Cooling Room Air Sensor is not installed Room Air Sensor Room Air Sensor is installed Electric heater is not used...
Page 101 CONFIGURATION Option Switch 1 Description Description Setting Setting Default Default As Master (LG Extension Module) MODBUS As Salve Party Controller) REGIN MODBUS Function Unified Open Protocol Antifreeze mode not use ANTIFREEZE Antifreeze mode * h Only the switch in the table has a function. Others have no function.
Page 102 CONFIGURATION DIP Switch Information Description Description Setting Setting Default Default Always Mode - Maintain Low noise mode for target temperature Low Noise Mode Partial Mode - Escape low noise mode for target temperature Max Mode Peak Control Peak Control : To limit maximum current (Power saving) Normal Defrost Mode - The same mode as the existing...
Page 103 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 104 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 105: 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 106: 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 107: 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 108: Rmc Version Information
SERVICE SETTING RMC version information 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 109: 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 110: Installer Setting
It must be set by the installation specialist with the installation license, and if it is installed or changed without installation license, all problems caused will be the responsibility of the installer, and may void the LG warranty. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [∧(up)] button for 3 seconds to enter the password input screen for the installer setting.
Page 111: Installer Setting
RMC master/slave controllers in one indoor unit. This function can be set to save the environment settings of the LG Therma V Configuration product for use in LG Therma V Configurator through Micro SD card. (LG heating configurator) General Function...
Page 112 INSTALLER SETTING Room Heating Function Description At the water control in heating mode, the control reference Heating temp. setting water temperature position setting. Air heating set temp. Adjusting range of 'Setting Air Temperature' in heating mode Adjusting range of 'Setting Leaving water Temperature' in Water heating set temp.
Page 113 INSTALLER SETTING Auto Mode Function Description Seasonal auto temp Set the operating temperature in Seasonal Auto mode. Domestic Hot Water Function Description DHW set temp. Setting DHW set temperature. Tank disinfection setting 1 Setting start/maintain time for disinfection. Tank disinfection setting 2 Setting disinfection temperature.
Page 114 INSTALLER SETTING Connectivity Function Description Dry contact function is the function that can be used only when Dry Contact Mode the dry contact devices is separately purchased and installed. Selection for setting temperature as air temperature or leaving Central Control Address water temperature or air+leaving water temperature.
Page 115: 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 116: Use Heating Tank Heater
INSTALLER SETTING Use Heating Tank Heater This is a function to determine the delay time of the electric heater for water tank. • In the installer setting list, Select Configuration category, and press [OK] button to move to the detail screen. Function Unit Default...
Page 117: 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 118 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 119 INSTALLER SETTING Installer setting function to set water mixing pump operation / delay time option in heating/cooling mode Value Default Range Time Setting / Type Time Setting Continuous Operation 3 min 1 ~ 60 min 3 min 1 ~ 60 min * When Continuous Operation is selected, On, Off is disabled.
Page 120: 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 121: 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 122: Lg Therma V Configuration
INSTALLER SETTING LG Therma V Conﬁguration This function can be set to save the installation settings of the product for use in LG Therma V Configurator through SD Card (LG heating configurator). • In the Installer setting list, and select LG Therma V Configuration setting category, and press [OK] button to move to the detail screen.
Page 123: Forced Operation
INSTALLER SETTING Forced operation • If the product is not used for a long time, the main water pump will be forced to operate for preventing pump failure and PHEX freezing. • Water pump off After 20 consecutive hours, disable / enable the logic that drives the water pump by itself •...
Page 124: 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. Value Default Setting Range...
Page 125: 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 126: Energy Monitoring
This function can be set to use energy monitoring fuction of unit. • Change setting values using [<,>(left/right)] button. Value Range Default Energy Monitoring Use/Not Use LG 1Ø / LG 3Ø / Type LG 1Ø EXTERNAL Electric Heater Setting Heater Capacity 1 kW ~ 10 kW...
Page 127: 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 128: Password Reset
INSTALLER SETTING Password Reset It is the function to reset (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 129: 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 130: 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 131: 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 132: 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 heating operation. • In the Installer setting list, and select Hysteresis Heating Water category, and press [OK] button to move to the detail screen.
Page 133: 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 134: 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 135: 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 136: 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 137 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 138: 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 139: 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 140: 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. Range Value Default...
Page 141: 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 142 INSTALLER SETTING - Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed. - FCU : determines if FCU is installed or not. - Example : If FCU is set as ’Use’, Stop temp. setting is disabled. However, if actually FCU is NOT installed in the water loop, the unit operates continuously in cooling mode until water temperature meets desired temperature.
Page 143: 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 144: 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 145: 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 146: 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 147 INSTALLER SETTING Default Default Function Description Range Boundary (Circuit1) (Circuit2) Outdoor1,Heat Heating lower ambient Out1 ≤ Out2-1 -10 °C (Out1) temp -25 ~ 35 °C Out2 ≥ Out1 +1 Outdoor2,Heat Heating higher ambient 18 °C Out2 ≤ Out3 -5 (Out2) temp Out3 ≥...
Page 148: 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 Max.
Page 149: 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 150: 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 Default Range Min temp 5 °C 30 ~ 1 °C Comp. Limit Temp 55 °C 58 ~ 40 °C...
Page 151: 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 Default Range Hysteresis 3 °C 4 ~ 2 °C NOTE The Heating priority in IWT products is always ‘DHW’.
Page 152 INSTALLER SETTING • Tank setting 1, 2 Descriptions for each parameters are as following. - Min temp. : temperature gap from Max outdoor temp. - Comp. Limit Temp. : maximum temperature generated by AWHP compressor cycle. - Example : If Min temp. is set as ‘5’ and Comp. Limit Temp. is set as ’48’, then Session A (see the graph) will be started when the water tank temperature is below 43 °C….
Page 153: 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 154 INSTALLER SETTING Value Default Range Active time 30 min 5~95 min Stop time 30 min 0~600 min...
Page 155: 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 156: Pump Test Run
INSTALLER SETTING Pump test run The pump test run is the function to test run by operating the main water pump for one hour. 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 157: Frost Protection Temp
INSTALLER SETTING Frost Protection Temp. Frost protection temperature setting is available in installer mode. It prevents frostbite from happening In the range of -25 to -5 degree celsius. • Change setting values using [<, >(left/right)] button. Default Value -5 / -10 / -15 / -20 / -25 Antifreeze Short Pin CN_ANTI_SW...
Page 158: 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. • Setting up operation status when dry contact on - Auto : Automatically, Operation ON with release hard lock - Manual : Keep Operation OFF with release hard lock ※...
Page 159: 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 160: 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 161: 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 162: Modbus Gateway Memory Map
INSTALLER SETTING Modbus gateway memory map NOTE In case of Split IWT, RTU Gateway should be installed for using modbus and refer to the RTU Gateway installation manual for memory maps. Baud Rate : 9 600 bps Stop Bit : 1 stop bit Parity : None Parity Coil Register (0x01) Register Description...
Page 163 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 164 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 165: 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 166 INSTALLER SETTING Party Boiler This function is to configure the 3 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 167: 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 168: 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 169: Thermostat Control Type
INSTALLER SETTING Thermostat control type It is a function to enable installer to control Water Pump Options using water flow sensor. • In the Installer setting list, and select Connectivity category, and press [OK] button to move to the detail screen. Type Heat &...
Page 170: Pump Operation Time
INSTALLER SETTING Pump operation time It is a function to show the main 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 171: 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 172 INSTALLER SETTING...
Page 173: 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 174: Commissioning
• Refrigerant leakage degrades the performance. If leakage found, Installation Refrigerant leakage contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the Drainage treatment bottom of the unit. In this case, prepare drainage treatment (for...
Page 175: 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 176: 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? Does cold water continue to * Check the load (In/Out Temp.) come out after 3 minutes of * Check pipe length and amount of operation? refrigerant...
Page 177: 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. Manifold valve Pressure gauge Open Close SVC Port Vacuum pump...
Page 178 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. Refrigerant cylinder SVC Port Manifold gauge Refrigerant Refrigerant cylinder cylinder 3.
Page 179: Decommissioning And Recycling
COMMISSIONING Decommissioning and Recycling • Sort the packaging according to cardboard, wood and foil and dispose of it in appropriate containers. • After the lifespan of the device ends it has to be disposed of in accordance with the legislation on waste electrical and electronic devices in force.
Page 180 COMMISSIONING 3. Draining the DHW tank Use the drain valve shown below to drain the Domestic hot water tank and circuit. The drain valve CAUTION Turn off the power supply of the heat pump before draining the unit. • Turn off the unit •...
Page 181: Reset Of The Thermal Protection Of The Electrical Heater
COMMISSIONING Reset of the thermal protection of the electrical heater The thermal protection of the electrical heater is an additional safeguard protecting the device in the following cases: • The electrical relay, which turns on the electrical flow heater can be permanently short-circuited.
Page 182: 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 183 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 (unplugged) → for Problem in refrigerant (inlet side) sensor Remote room air sensor Problem in refrigerant (outlet side) sensor •...
Page 184 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Abnormal operation of electric • If there is no problem in electric heater control, heater Water pipe possible maximum leaving water temperature is • Leaving water temperature is overheated 57 °C above 57 °C(R410A)/65...
Page 185 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Overload operation (Outdoor fan constraint, screened, • Check outdoor fan constraint/ screened/ flow High temperature blocked) structure in Discharge pipe • Refrigerant leakage • Check refrigerant leakage of the inverter (insufficient) •...
Page 186 COMMISSIONING Display Title Cause of error Check point & Normal condition code PCB(Inverter) & • EEPROM contact defect/wrong insertion EEPROM Access error and Main EEPROM • Different EEPROM Version Check SUM error check sum error • ODU Inverter & Main PCB assembly 1 damage •...
Page 187: Open Source Software Notice Information
In addition to the source code, all referred license terms, warranty disclaimers and copyright notice are available for download. LG Electronics will also provide open source code to you on CD-ROM for a change covering the cost of performing such distribution (such as the cost of media, shipping, and handling) upon email request to opensource@lge.com.
Page 189 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 Tianjin Appliances Co.,Ltd. No. 9 Jin Wei Road, Bei Chen District, Tianjin, 300402, P.R. China UK Importer : LG Electronics U.K.

LG THERMA V HN0913T Installation Manual

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