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LG THERMA V 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
MFL68681837
Rev.00_010323
Copyright © 2023 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 MFL68681837 Rev.00_010323 Copyright © 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 Multiple installation...
  • Page 3 TABLE OF CONTENTS [Chapter 5] INSTALLATION OF INDOOR UNIT Conditions where Indoor Unit is Installed Floor area requirement : Indoor unit 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...
  • Page 4 TABLE OF CONTENTS 2nd Circuit 3rd Party Boiler 3rd Party Controller Meter Interface Central Controller DHW Tank DHW Tank Kit Solar Thermal Kit Dry Contact External Controller - Setting up programmable digital input operation Remote Temperature Sensor Solar pump External pump Wi-fi...
  • Page 5 TABLE OF CONTENTS 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 Screed drying Heater on temperature Air heating set temp.
  • Page 6 TABLE OF CONTENTS Dry Contact Mode Central Control Address CN_CC Energy state Thermostat control type Pump operation time IDU operation time Modbus Address Modbus gateway memory map CN_EXT 3rd Party Boiler Meter Interface Current flow rate Data logging [Chapter 10] COMMISSIONING Check List before Starting Operation Starting Operation...

  • Page 7: 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 8: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS Read the precautions in This appliance is filled this manual carefully with flammable refrigerant before operating the unit. (R32) This symbol indicates that This symbol indicates that a service personnel the Operation Manual should be handling this should be read carefully.
  • Page 9 SAFETY INSTRUCTIONS • For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. - There is risk of fire or electric shock. • Always ground the unit. - There is risk of fire or electric shock. •...
  • Page 10 SAFETY INSTRUCTIONS • Use a vacuum pump or inert (nitrogen) gas when doing leakage test or purging air. Do not compress air or oxygen and do not use flammable gases. - There is the risk of death, injury, fire or explosion. •...
  • Page 11 SAFETY INSTRUCTIONS • Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards. • Flexible refrigerant connectors (such as connecting lines between the indoor and outdoor unit) that may be displaced during normal operations shall be protected against mechanical damage.
  • Page 12 SAFETY INSTRUCTIONS • When flammable gas leaks, turn off the gas and open a window for ventilation before turning the unit on. - There is risk of explosion or fire. • If strange sounds, or smell or smoke comes from unit, turn the breaker off or disconnect the power supply cable.
  • Page 13 SAFETY INSTRUCTIONS • Be careful that some part of the control box are hot. - There is risk of physical injury or burns. • When the unit is soaked (flooded or submerged), contact an Authorized Service Center. - There is risk of fire or electric shock. •...
  • Page 14 SAFETY INSTRUCTIONS • When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be re-fabricated. • Periodic(more than once/year) cleaning of the dust or salt particles stuck on the heat exchangers by using water. •...
  • Page 15 SAFETY INSTRUCTIONS If a leak is suspected, all naked flames shall be removed/extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak.
  • Page 16 SAFETY INSTRUCTIONS • Charging procedures In addition to conventional charging procedures, the following requirements shall be followed. - Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.
  • Page 17 SAFETY INSTRUCTIONS The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order.
  • Page 18 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 19 SAFETY INSTRUCTIONS • The appliance shall be disconnected from its power source during service and when replacing parts. • Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules. • The Installation kit supplied with the appliance are to be used and that old Installation kit should not be reused.

  • Page 20: 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 Installation Indoor unit...
  • Page 21 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 22: 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 23 GENERAL INFORMATION Buyer Model Name Outdoor unit Indoor unit Type Refrigerant Type Refrigerant 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 Split H U 06 1 M R · U2 0 Split H N 06 1 3 M ·...

  • Page 24: Related Information

    0.03 ~ 0.3 - 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 25: Parts And Dimensions

    GENERAL INFORMATION Parts and Dimensions Indoor unit : External (unit : mm) * The feature may be vary according to the type of model. Description Name Remark Control Panel Built-in Remote Controller...
  • Page 26 GENERAL INFORMATION Indoor unit : Internal (unit : mm)
  • Page 27 GENERAL INFORMATION Description Name Remark Leaving Water Pipe Male PT 1 inch Entering Water Pipe Male PT 1 inch Refrigerant Pipe Ø 6.35 mm Refrigerant Pipe Ø 12.7 mm Water Pump Max Head 9.5 / 7 / 6 m Safety Valve Open at water pressure 3 bar Control Box PCB and terminal blocks...
  • Page 28 GENERAL INFORMATION Outdoor unit : External Chassis : U24A (unit : mm) 4-holes for anchor bolts (M10) * The feature may be vary according to the type of model.

  • Page 29: Control Parts

    GENERAL INFORMATION Control Parts * The feature may be vary according to the type of 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 Booster heater ELB The ELB protects the booster heater in DHW tank against (optional)

  • Page 30: 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 31: 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 50 °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 32 GENERAL INFORMATION CASE 2: Connecting DHW Tank Outdoor Indoor Indoor Unit Outdoor Unit Buffer Tank M / F Hot water Fan coil unit Floor heating loop Radiator tank tank tank City water NOTE • DHW tank - It should be equipped with booster heater to generate sufficient heat energy in very cold season.
  • Page 33 GENERAL INFORMATION CASE 3: Connecting Solar thermal system Outdoor Indoor Indoor Unit Outdoor Unit Buffer Tank M / F Solar heat source Hot water Fan coil unit Floor heating loop Radiator tank tank tank City water NOTE • DHW tank - It should be equipped with booster heater to generate sufficient heat energy in very cold season.
  • Page 34 GENERAL INFORMATION CASE 4: Connecting 2 Circuit [Circuit 2] Mixing Circuit circuit temp. sensor Outdoor Indoor Mix Kit Indoor Unit Outdoor Unit Floor Floor heating loop heating loop Buffer Tank [Circuit 1] Direct Circuit M / F Hydronic separator Radiator Radiator NOTE •...
  • Page 35 GENERAL INFORMATION CASE 5: Connecting 3 Party Boiler 3 Way Valve direction Boiler On : Boiler Off : Outdoor Indoor Indoor Unit Boiler Outdoor Unit Buffer Tank M / F Floor Floor Floor heating loop heating loop heating loop NOTE •...

  • Page 36: Cycle Diagram

    GENERAL INFORMATION Cycle Diagram <Refrigerant Side> <Water Side> : Cooling : Heating Pressure Sensor Pressure Switch <Indoor Unit> Air Vent A8/A9 Muffler Expansion Tank Relief valve Water Air Vent Pressure Sensor/ Pressure Gauge Water In Strainer Flow [PHE] Sensor <Inside of Split Product> Description Category Symbol...

  • Page 37: Water Cycle

    GENERAL INFORMATION Water cycle...
  • Page 38 GENERAL INFORMATION Description Category Symbol Meaning PCB Connector Remarks Refrigerant temperature sensor (Gas side) CN_PIPE_OUT - NTC5kOhm Refrigerant temperature sensor (Liquid side) CN_PIPE_IN - NTC5kOhm CN_TH3 Entering water temperature sensor (WATER IN) CN_TH3 - NTC5kOhm - S11,S12 and S13 are connected at Leaving water temperature sensor (PHEX OUT) 6-pin-type connector CN_TH3...

  • Page 39: 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 40: Multiple Installation

    INSTALLATION OF OUTDOOR UNIT Multiple installation When installing two or more units, please observe the installation space. - If there is an obstruction in the intake (Unit : mm) - If there is an obstruction in the discharge part (Unit : mm)
  • Page 41 INSTALLATION OF OUTDOOR UNIT - When there is an obstacle in the suction or discharge part (Unit : mm) L > H L > H ≤ ≤ - Multiple installation on the roof (Unit : mm) ≤...

  • Page 42: 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 43 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 44: 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 45: Seasonal Wind And Cautions In Winter

    INSTALLATION OF OUTDOOR UNIT Seasonal wind and cautions in winter • Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well. • Get ready for seasonal wind or snow in winter even in other areas. •...

  • Page 46: 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 3rd party accessories are described, too.
  • Page 47 INSTALLATION OF INDOOR UNIT Mounting to Wall Step 1. Disconnect the remote control case from the front panel and disconnect the remote control cable. CAUTION After installation is completed, return the remote control to its original state. NOTE Use a flat-blade screwdriver or a coin to remove the remote control case. Step 2.
  • Page 48 INSTALLATION OF INDOOR UNIT Step 4. Detach the Installation sheet. Screw bolts at the hole marks on the wall. When screwing bolts, use M8 ~ M11 anchor bolts to secure hanging the indoor unit. NOTE Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are more preferred.

  • Page 49: Floor Area Requirement : Indoor Unit

    INSTALLATION OF INDOOR UNIT Floor area requirement : Indoor unit ) is in system ≥1.842 kg, additional minimum floor area - If the total refrigerant charge (m requirements is complied in the following flow chart. Room A Room B > 0.5 * Anv More than >...

  • Page 50: 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 300 mm from the floor.
  • Page 51 INSTALLATION OF INDOOR UNIT Table 2 - Minimum floor area Minimum Floor Area A Minimum Floor Area A Total Ref. Total Ref. Amount m Based on h Amount m Based on h (kg) (kg) 1.84 6.15 5.71 5.33 4.99 4.70 4.44 2.82 14.42 12.43 10.83 9.52 8.43 7.52 1.86...
  • Page 52 INSTALLATION OF INDOOR UNIT Table 3 - Minimum venting opening area for natural ventilation Minimum opening area Anv (Based on h 1.3 m) room Total Ref. Amount m (kg) Minimum opening area Anv (Based on h 1.4 m) room Total Ref. Amount m (kg)
  • Page 53 INSTALLATION OF INDOOR UNIT Minimum opening area Anv (Based on h 1.5 m) room Total Ref. Amount m (kg) Minimum opening area Anv (Based on h 1.6 m) room Total Ref. Amount m (kg)
  • Page 54 INSTALLATION OF INDOOR UNIT Minimum opening area Anv (Based on h 1.7 m) room Total Ref. Amount mc (kg) Minimum opening area Anv (Based on h 1.8 m) room Total Ref. Amount m (kg) NOTE : Installation height, height measured from the bottom of the casing to the floor - For intermediate A values, the value that corresponds to the lower A value from...

  • Page 55: 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 56 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 57 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 58 INSTALLATION OF INDOOR UNIT - Power Supply for Heat Pump Indoor Unit Power Source Communication ELCB Switch Box Outdoor Unit - Power Supply for Backup Heater Indoor Unit Power Source Communication ELCB Switch Box Outdoor Unit - Power Supply for DHW Booster Heater Tank kit Indoor Tank...

  • Page 59: Piping And Wiring For Outdoor Unit

    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. *Pipes and wires should be purchased separately for installation of the product.

  • Page 60: 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 61: Connecting Pipe To Indoor Unit

    PIPING AND WIRING FOR OUTDOOR UNIT Connecting Pipe to Indoor Connecting Pipe to Outdoor Unit Unit Step 1. Tightening Step 1. Pre-tightening. - Align the center of the pipes and sufficiently - Align the center of the pipes and sufficiently tighten the flare nut by hand.
  • Page 62 PIPING AND WIRING FOR OUTDOOR UNIT Wiring Procedure for Power Cable CAUTION and Connecting Cable After checking and confirming following conditions, start wiring work. • Secure dedicated power source for the Air-to-Water heat pump. The wiring Connecting diagram (attached inside the control Cable box of the indoor unit) is presenting Power Cable...

  • Page 63: 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 leakage of the refrigerant effects degrade of performance directly.

  • Page 64: Leakage Test And Evacuation

    PIPING AND WIRING FOR OUTDOOR UNIT Leakage test and Evacuation CAUTION Air and moisture remaining in the refrigerant Be sure to use a manifold valve for system have undesirable effects as indicated leakage test. If it is not available, use a below.
  • Page 65 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 66: 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 67 PIPING AND WIRING FOR INDOOR UNIT WARNING Installing shut-off valve Before starting water charging, these two shut-off valves should be assembled with water inlet and outlet pipe of the indoor unit. Water condensation on the floor While cooling operation, it is very important to keep leaving water temperature higher than 16 °C.
  • Page 68 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 69: 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 70: Performance Curve

    PIPING AND WIRING FOR INDOOR UNIT Performance curve QH Chart Q [m Performance test based on standard ISO 9906 with pre-pressure 2.0bar and liquid temperature 20 °C. WARNING Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.

  • Page 71: 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 72: 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 73: Electrical Wiring

    PIPING AND WIRING FOR INDOOR 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 74 PIPING AND WIRING FOR INDOOR 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 Terminal Terminal...
  • Page 75 PIPING AND WIRING FOR INDOOR 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 76: 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 77 ACCESSORIES INSTALLATION Item Purpose Model PI485 To use Central Controller PP485A00T Cloud Gateway To use Becon cloud PWFMDB200 To enable remote system Wi-Fi Modem PWFMDD200 operation from smartphone Extension cable To connect with Wi-Fi modem to for Wi-Fi PWYREW000 the USB cable Modem To interlock with 2nd circuit operation and control temperature...
  • Page 78 ACCESSORIES INSTALLATION CAUTION • Install the drain pan when cooling. • If not installed, water may form. • Please refer to separate installation manual when installing drain pan. Accessories supported by 3rd party Companies Item Purpose Specification • Solar collector To generate auxiliary heating Solar Heating System •...

  • Page 79: Before Installation

    ACCESSORIES INSTALLATION Before Installation WARNING Followings should be kept before installation • Main power must be turned off during installing accessories. • 3rd party accessories should be comply with supported specification. • Proper tools should be chosen for installation. • Never do installation with wet hands. Thermostat Thermostat is generally used to control the product by air temperature.
  • Page 80 ACCESSORIES INSTALLATION General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only (3) Mechanical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) Heating Only (3) Electrical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) (1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
  • Page 81 ACCESSORIES INSTALLATION How to wire Heating / Cooling / DHW Heating 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 82: 2Nd Circuit

    ACCESSORIES INSTALLATION Circuit The 2nd circuit is generally used to control the temperature of 2 rooms differently. To use the 2nd Circuit, you need to prepare a separate Mix Kit. The mix kit must be installed in the circuit 2. [Install Guide 2 Circuit Heating] Circuit 2...
  • Page 83 ACCESSORIES INSTALLATION How to Wire Mix Pump, Mixing Valve and Thermistor for 2nd Circuit 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...

  • Page 84: 3Rd Party Boiler

    ACCESSORIES INSTALLATION 3rd Party Boiler The product can be used by connecting an Auxiliary boiler. 3rd party boiler can be controlled by manually via remote controller or automatically itself by means of comparing the outside air temperature and the pre-set temperature. How to wire 3rd party boiler Follow below procedures step 1 ~ step 3.

  • Page 85: 3Rd Party Controller

    Step 3. Check if the harness(White) is inserted fully to the indoor unit PCB (CN_COM). Step 4. Connect the 3rd party controller to terminal block 4(21/22) completely. (including Meter interface module) CN_MODBUS PARTY CONTROLLER (DC 5 V) PARTY CONTROLLER or METER INTERFACE(LG) Indoor PCB...

  • Page 86: Meter Interface

    ACCESSORIES INSTALLATION Meter Interface This product can be used by connecting the meter interface module supplied in the field. The meter interface module can communicate with the wired remote controller. The meter interface module lets you know the amount of power generated by the product. How to install Meter Interface [Parts of Meter interface] Meter interface body...

  • Page 87: Central Controller

    Log in to central controller and register device with address set. Consult a qualified engineer/ technician for the installation of central controller. If you have any installation queries, contact the LG service center or LG Electronics. How to Installation PI485 Fix the PI485 PCB as shown in below images.

  • Page 88: Dhw Tank

    ACCESSORIES INSTALLATION DHW Tank To establish DHW circuit, 3way valve and DHW tank kit is required. If solar thermal system is pre-installed at the installation field, solar thermal kit is required to interface solar thermal system – to – DHW tank – to – Installation condition Installing DHW tank following considerations : - DHW tank should be located at the flat place.
  • Page 89 ACCESSORIES INSTALLATION Installing recirculation pump When is used with DHW tank, it is STRONGLY recommended to install recirculation pump to prevent flooding out cold water at the end of hot water supply and to stabilize the water temperature inside DHW tank - The recirculation pump should be operated when DHW demand is not required.
  • Page 90 ACCESSORIES INSTALLATION How to Wire Booster Heater Step 1. Uncover heater cover of the DHW tank. It is located side of the tank. Step 2. Find terminal block and connect wires as below. Wires are field-supplied item. (L) : Live signal from PCB to Heater. (N) : Neutral signal from PCB to Heater.

  • Page 91: Dhw Tank Kit

    ACCESSORIES INSTALLATION DHW Tank Kit This product can be used by connecting the DHW tank kit in the field. It can be utilized hot water heated by booster heater in DHW tank. How to install DHW tank kit [Parts of DHW Tank Kit] Tank kit body Sensor Multi harness...
  • Page 92 ACCESSORIES INSTALLATION Check Polarity 1(L) 2(N) TO ELB FOR DHW TANK E/HEATER WATER TANK HEATER...

  • Page 93: Solar Thermal Kit

    This product can be used by connecting the solar thermal kit in the field. It can be utilized hot water heated by solar thermal system. End-user must be install solar thermal kit accessory(PHLLA) provided by LG. How to Install Solar Thermal Kit...

  • Page 94: 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 95 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 96: 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 97: 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 98 ACCESSORIES INSTALLATION How to Install Remote Temperature Sensor [Parts of Remote Temperature Sensor] Cable Screw(to fix remote sensor) Installation Manual 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 99 ACCESSORIES INSTALLATION CAUTION • Choose the place where the average temperature can be measured for the unit operates. • Avoid direct sunlight. • Choose the place where the cooling/heating devices do not affect the remote sensor. • Choose the place where the outlet of the cooling fan do not affect the remote sensor. •...

  • Page 100: Solar Pump

    ACCESSORIES INSTALLATION Solar pump Solar pump can be required to energize water flow when solar thermal system is installed. How to wire solar pump Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2.

  • Page 101: 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 wire external pump Follow below procedures step 1 ~ step 3.

  • Page 102: 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. For detailed instructions, refer to the manual included in the accessories. How to wire Wi-fi Modem [Parts of Wi-fi modem] Wi-fi modem body USB Cable...

  • Page 103: 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 104: 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-COM). Available Energy States There are 8 energy states available in total. Four different states can be triggered using the 230V-inputs –...

  • Page 105: 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. General Information supports following 2way valve.

  • Page 106: 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 107: 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 Hydraulic pressure - Pressure of Supplying water should be Under 3.0 bar...

  • Page 108: 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 109 CONFIGURATION DIP Switch Information Option Switch 2 Description Description Setting Setting Default Default Heat pump is installed (Heating(Cooling) circuit only) Heat pump + DHW tank Accessory installation is installed information Heat pump + DHW tank + Solar thermal system is installed Heating Only Cycle Heating &...
  • Page 110 CONFIGURATION Option Switch 1 Description Description Setting Setting Default Default As Master (LG extension modules) MODBUS Communication Type As Slave (3rd party controller) MODBUS Function Unified Open Protocol Antifreeze agent is not used Antifreeze Agent Antifreeze agent is used * * Possibility to allow colder water temperature by setting.
  • Page 111 CONFIGURATION DIP Switch Information Description Description Setting Setting Default Default Always Mode - Maintain low noise mode for target temperature Low Noise Mode ON/OFF Partial mode - Escape low noise mode for target temperature Max Mode Peak Control Step 1 - To limit maximum current Peak Control (Power saving)
  • Page 112 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 113 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 114: 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 115: 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 116: 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 Model information - Depending on the model you own, the model name and serial number may not be displayed.

  • Page 117: 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 118: 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 119: 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 120: Installer Setting

    Function to use 2 remote control environment Function to save the environment settings of the LG Therma V Configuration product for use in LG Therma V Configurator through SD Card. Water pump off After 20 consecutive hours, disable / Forced operation...
  • Page 121 INSTALLER SETTING Segmentation Functions Description At the water control in cooling mode, the control Cooling temp. setting reference water temperature position setting Adjusting range of 'Setting Air Temperature' in Air cooling set temp. cooling mode Adjusting range of 'Setting Leaving Water Water cooling set temp.
  • Page 122 INSTALLER SETTING Segmentation Functions Description Pump test run Water pump test run This function is to apply an offset to the freezing Frost Protection Temp. temperature of the freeze protection logic when using antifreeze mode Service This function selects whether or not to heat DHW BUH for DHW in emerg.

  • Page 123: 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 124: Use Heating Tank Heater

    INSTALLER SETTING Use Heating Tank Heater This is a function to change the set value for the operation of the hot water tank heater, such as heating tank heater use /not use and heater delay time. • In the installer setting list, Select Configuration category, and press [OK] button to move to the detail screen.

  • Page 125: 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 126 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 127: 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 128: 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 129: Lg Therma V Configuration

    INSTALLER SETTING LG Therma V Configuration This function can be set to save the environment settings of the product for use in LG Therma V Configurator through SD Card. • In the Installer setting list, and select LG Therma V Configuration setting category, and press [OK] button to move to the detail screen.

  • Page 130: Forced Operation

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

  • Page 131: Pump Prerun/Overrun

    INSTALLER SETTING Pump Prerun/Overrun Pump Prerun operates to ensure sufficient flow before the compressor is operated. This is a function that allows heat exchange to work smoothly. Pump Overrun removes latent heat from the PHEX by circulating the water flow when the comp is stopped Value Default...

  • Page 132: 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 133: Energy Monitoring

    This function can be set to use energy monitoring function of unit. • Change setting values using [<,>(left/right)] button. 3 kW Value Default Range Energy Monitoring Use/Not Use LG 1Ø / LG 3Ø / Type LG 1Ø EXTERNAL Electric Heater Setting Heater Capacity 3 kW 1 kW ~ 10 kW...

  • Page 134: 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 Type2, there is a risk of freezing. Function Detection Case...

  • Page 135: Password Reset

    INSTALLER SETTING Password Reset It is the function to initialize (0000) when you forgot the password set in the remote controller. • In the installer setting list, select the password Reset setting category, and press [OK] button to move to the detail screen. •...

  • Page 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: Heater On Temperature

    INSTALLER SETTING Heater on temperature Depending on local climatic conditions, it is necessary to change the temperature condition in which backup heater turns on / off. • In the installer setting list, Heater on temperature category, and press [OK] button to move to the detail screen.
  • Page 139 INSTALLER SETTING NOTE • Heater on temperature Using Half capacity of backup heater (For Split Indoor unit 5 Series) : when DIP Switch No. 6 and 7 is set as ‘ON-OFF’ : - Example : If Heater on temperature is set as ‘-1’ and DIP switch No 6. and 7 is set as ‘ON-OFF’, then half capacity of electric heater will start operation when outdoor air temperature is below -1 °C and current leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air...

  • Page 140: 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 141: 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 142: 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 143: Hysteresis Heating Water

    INSTALLER SETTING Hysteresis Heating Water It is a function to adjust the heating water temperature Thermal On / Off temperature according to the field environment in order to offer optimized DHW heating operation. • In the Installer setting list, and select Hysteresis Heating Water category, and press [OK] button to move to the detail screen.

  • Page 144: 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 145: 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 146: 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 147: Water Cooling Set Temp

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

  • Page 148: 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 149 INSTALLER SETTING - Stop temp. : cut-off temp. Stop temp. is valid when FCU is set as ‘Use’. - FCU : determines if FCU is installed or not. - Example : If 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 150: 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 151: 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 152: 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 153: 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 154: 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 155 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 156 INSTALLER SETTING In this mode, setting temperature will follow outdoor temperature automatically. This mode adds the cooling season function to the conventional weather dependent operation mode. Auto-Adjustable Target Temperature Heating Cooling Water Temp Target: LW/EW1 Room Air Temp Target: RA1 Temperature profile of weather dependent operation Water Temp Target: LW/EW2...

  • Page 157: Heater Priority

    INSTALLER SETTING Heater priority • Heater priority: It is decided whether to use the boost heater for DHW operation and the backup heater for floor heating at the same time by condition. • Example: If the heater priority is set to 'Main+Boost heater ON', the backup heater and boost heater are turned on/off according to the control logic.

  • Page 158: Dhw Set Temp

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

  • Page 159: 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 160: 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 1 ~ 30 °C Comp. Limit Temp. 50 °C 40 ~ 50 °C NOTE...

  • Page 161: 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 2 ~ 4 °C Heating priority Floor heating / DHW...
  • Page 162 INSTALLER SETTING • Tank setting 1, 2 Descriptions for each parameters are as following. - Min temp. : temperature gap from Max outdoor temp. - Max outdoor temp. : maximum temperature generated by AWHP compressor cycle. - Example : If Min temp. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see the graph) will be started when the water tank temperature is below 43 °C….

  • Page 163: 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 164 INSTALLER SETTING Value Default Range Active time 30 min 5~95 min Stop time 30 min 0~600 min...

  • Page 165: 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 166: Solar Thermal System

    INSTALLER SETTING Solar Thermal System It is function to set operation reference value in Solar Thermal System. In the installer setting list, select Solar thermal system category, and press [OK] button to move to the detail screen. NOTE To use this function, switch No.2 of option switch 2 must be turned ON and No.3 of option switch 2 must be turned OFF.
  • Page 167 INSTALLER SETTING Descriptions for each parameters are as following. • Solar collector set temp - Min temp : It is the minimum solar collector temperature at which the solar thermal system can operate. - Max temp : It is the maximum solar collector temperature at which the solar thermal system can operate.

  • Page 168: Pump Test Run

    INSTALLER SETTING Pump test run The pump test run is to test run by operating the water pump for 1 hour. This function can be used for air purging through air vents and checking flow rate and others. • In the installer setting list, Pump Test run category, and press [OK] button to move to the detail screen.

  • Page 169: Frost Protection Temp

    INSTALLER SETTING Frost Protection Temp. This function prevents the unit from freezing. This function sets the freeze protection temperature according to the concentration injected after injecting antifreeze. Make sure to use this function only when antifreeze is added. • Change setting values using [<, >(left/right)] button. •...

  • Page 170: Buh For Dhw In Emerg

    INSTALLER SETTING BUH for DHW in emerg. This function selects whether or not to heat DHW with Backup Heater when emergency operation is entered. • Change setting values using [<, >(left/right)] button. • The function is not available for some products. Default Range Not use...

  • Page 171: Dry Contact Mode

    INSTALLER SETTING Dry Contact Mode Dry contact function is the function that can be used only when the dry contact devices is separately purchased and installed. • Change setting values using [<,>(left/right)] button. Value Description Auto (Default) Automatically operation ON with release hard lock Manual Keep operation OFF with hard lock NOTE...

  • Page 172: 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 173: 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 174: 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 175 INSTALLER SETTING Division Value Default Range Division Value Default Range Use / Not Use Use / Not Use Heat Temp. fixed Heat Temp. +5 °C 0 ~ 30 °C ES 1 ES 5 Cool Temp. fixed Cool Temp. -5 °C -30 ~ 0 °C DHW Temp.
  • Page 176 INSTALLER SETTING When Signal Mode of EES use type is selected, press the Digital Input Assignment button to set the energy state according to the input signal. Input Signal Output state Value TB_SG1 TB_SG2 Default Range fixed fixed ES3-ES8...

  • Page 177: Thermostat Control Type

    INSTALLER SETTING Thermostat control type Set the type of thermostat control. • In the Installer setting list, and select Connectivity category, and press [OK] button to move to the detail screen. Type Heat & Cool (Default) Heat & Cool / DHW...

  • Page 178: Pump Operation Time

    INSTALLER SETTING Pump operation time It is a function to show the water pump’s operation time for check mechanical life. • In the Installer setting list, and select Information category, and press [OK] button to move to the detail screen.

  • Page 179: 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 180: 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 181: Modbus Gateway Memory Map

    INSTALLER SETTING Modbus gateway memory map Baud Rate : 9 600 bps Stop Bit : 1 stop bit Parity : None Parity Coil Register (0x01) Register Description Value explanation 00001 Enable/Disable (Heating/Cooling) 0 : Operation OFF / 1 : Operation ON 00002 Enable/Disable (DHW) 0 : Operation OFF / 1 : Operation ON...
  • Page 182 INSTALLER SETTING Holding Register (0x03) 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 183 INSTALLER SETTING Input Register (0x04) 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 184: 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 185 INSTALLER SETTING Party Boiler This function is to configure the 3rd party boiler to be controlled. If the status of this function is “Use”, you can choose control mode of boiler, Auto or Manual. If the mode of this function is set to “Auto”, you can set temperature of the boiler and hysteresis, respectively.

  • Page 186: 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 187: Current Flow Rate

    INSTALLER SETTING Current flow rate It is the function to check the current flow rate. • In the installer setting list, select Current Flow Rate category, and press [OK] button to move to the detail screen. The current flow rate can be checked. (Range : 5 ~ 80 L/min) •...

  • Page 188: 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 189: Commissioning

    • Refrigerant leakage degrades the performance. If leakage found, contact Installation Refrigerant leakage qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom of the Drainage treatment unit. In this case, prepare drainage treatment (for example, vessel to contain...

  • Page 190: 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 191: 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 hot 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 192: 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 Vacuum pump (0.5 ~ 1 HP)
  • Page 193 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 Manifold gauge SVC Port Refrigerant Refrigerant cylinder cylinder * It is recommended to charge the refrigerant container upside down.
  • Page 194 COMMISSIONING 3. Location of SVC port 1Ø : 4 kW, 6 kW SVC Port...

  • Page 195: Trouble Shooting

    COMMISSIONING Trouble shooting 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 is •...
  • Page 196 COMMISSIONING Troubleshooting for Error Code Display Title Cause of error Check point & Normal condition code Problem in remote room air sensor Problem in refrigerant (inlet side) sensor Problem in refrigerant (outlet • Resistance: 10 kΩ at 25 centigrade (unplugged) → for side) sensor Remote room air sensor Problem in water...
  • Page 197 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Water Pump ON. : If flow rate is not more than 5 LPM or not less than 80 LPM, detect it • Display the flow rate value that received from the for 15 seconds.
  • Page 198 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Check the connection of comp wire “U,V,W” DC Compressor • Compressor Starting fail error • Malfunction of compressor Position • Check the component of “IPM”, detection parts. •...
  • Page 199 COMMISSIONING Display Title Cause of error Check point & Normal condition code Problem in Cond. • Open / Short • Bad connection of thermistor connector middle pipe • Soldered poorly • Defect of thermistor connector (Open/Short) temperature sensor • Internal circuit error •...
  • Page 201 LG Electronics Inc. Single Point of Contact (EU/UK) : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands Manufacturer : LG Electronics Inc. 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA 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.

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