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LG THERMA V Air-to-Water Heat Pump Installation Manual

Therma v air-to-water heat pump.
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INSTALLATION MANUAL

AIR CONDITIONER

• 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.
TYPE : Air-to-Water Heat Pump
P/NO : MFL63285302
www.lg.com

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Table of Contents

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   Summary of Contents for LG THERMA V Air-to-Water Heat Pump

  • Page 1: Installation Manual

    • 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. TYPE : Air-to-Water Heat Pump www.lg.com P/NO : MFL63285302...
  • Page 2: Table Of Contents

    CAUTION ............................9 INSTALLATION CAUTION ......................9 OPERATION CAUTION ......................9 2. GENERAL INFORMATION ....................10 MODEL INFORMATION ......................11 ACCESSORIES ..........................12 ACCESSORIES SUPPORTED BY LG Electronics ...............12 ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..........12 TYPICAL INSTALLATION EXAMPLE ..................13 CASE 1..........................13 CASE 2..........................14 CASE 3 ..........................15 CYCLE DIAGRAM ........................16...
  • Page 3 3. INSTALLATION OF OUTDOOR UNIT ................30 CONDITIONS WHERE OUTDOOR UNIT IS INSTALLED............30 DRILL A HOLE IN THE WALL.....................30 INSTALLATION AT SEASIDE .....................31 SEASONAL WIND AND CAUTIONS IN WINTER ..............31 4. INSTALLATION OF INDOOR UNIT ................32 CONDITIONS WHERE INDOOR UNIT IS INSTALLED..............32 GENERAL CONSIDERATIONS ....................32 SERVICE SPACE........................32 MOUNTING TO WALL ......................33...
  • Page 4 ELECTRICAL WIRING........................55 GENERAL CONSIDERATION....................55 TERMINAL BLOCK INFORMATION ..................56 CONNECTING WITH OUTDOOR UNIT ................58 ELECTRIC HEATER WIRING ....................58 7. ACCESSORIES INSTALLATION...................59 BEFORE INSTALLATION ......................59 THERMOSTAT ..........................59 GENERAL INFORMATION ....................59 HOW TO WIRE THERMOSTAT ....................60 FINAL CHECK........................61 SANITARY WATER TANK AND SANITARY WATER TANK KIT/SOLAR THERMAL KIT ...62 GENERAL INFORMATION ....................62 HOW TO INSTALL SANITARY WATER TANK ..............63 HOW TO INSTALL SANITARY WATER TANK KIT ...............64...
  • Page 5: Items Inside Product Box

    Items inside product box Items Inside Product Box 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...
  • Page 6: Preface

    • Troubleshooting, maintenance, and error code list are presented to correct Chapter 9 problems. REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE www.lgservice.com 6 Air-to-Water Heat Pump...
  • Page 7: Safety Precaution

    Safety Precautions 1. Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. n Be sure to read before installing the product. n Be sure to observe the cautions specified here as they include important items related to safety. n Incorrect operation due to ignoring instruction will cause harm or damage.
  • Page 8: Operation Warning

    Safety Precautions For installation, always Do not install the product on Be sure the installation area contact the dealer or an a defective installation does not deteriorate with Authorized Service Center. stand. age. • There is risk of fire, electric •...
  • Page 9: Caution

    Safety Precautions Special warning about no operation for long-time • If the product is not used for long time, we strongly recommend NOT TO SWITCH OFF THE POWER SUPPLY to the product. • If power is not supplied, some special product-protecting actions (such as water pump anti-locking) will not performed.
  • Page 10: General Information

    General Information 2. General Information With advanced inverter technology, is suitable for applications like under floor heating, under floor cooling, and hot water generation. By Interfacing to various accessories user can customize the range of the application. In this chapter, general information of is presented to identify the installation procedure.
  • Page 11: Model Information

    General Information Model name and related information Model Name Capacity Built-In Electric Power Source Power Source Heater(kW) Outdoor Unit Indoor Unit (Electric Heater) (Unit) Heating(kW) Cooling(kW) AH-W096A0 AHUW096A0 AHNW096A0 4(2+2) AH-W126A0 AHUW126A0 AHNW126A0 AH-W146A0 AHUW146A0 AHNW146A0 6(3+3) 1~ 220V-240V 50Hz AH-W166A0 AHUW166A0 AHNW166A0...
  • Page 12: Accessories

    , there are various external auxiliary apparatus called as ʻaccessories.ʼ They are classified by ʻaccessoriesʼ and ʻ3rd party accessoriesʼ according to the manufacturer. Accessories are presented LG Electronics, and 3rd party accessories are presented by related manufacturers. Accessories supported by LG Electronics...
  • Page 13: Typical Installation Example

    General Information Typical Installation Example is installed with pre-existing boiler, the boiler and THERMA V 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 14: Case 2

    General Information CASE 2: Connecting Sanitary Water Tank Outdoor Indoor Outdoor Unit Indoor Unit Hot water Fan coil unit Floor heating loop Radiator Sanitary water tank City water Note: • Sanitary water tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.
  • Page 15: Case 3

    General Information CASE 3: Connecting Solar thermal system Outdoor Indoor Outdoor Unit Indoor Unit Solar heat source Hot water Fan coil unit Floor heating loop Radiator Sanitary water tank City water Note: • Sanitary water tank - It should have additional indirect heat exchanger to utilize heat energy by solar thermal system. •...
  • Page 16: Cycle Diagram

    General Information Cycle Diagram Refrigerant Cycle(Non-Vapor Injection) INDOOR UNIT OUTDOOR UNIT LIQUID SIDE 3-Way Service Valve Indoor Unit Outdoor Unit Plate Heat Heat Exchanger Exchanger Low Pressure Switch GAS SIDE Reversing Valve 3-Way Accumulator Service Valve High Pressure COOLING COMPRESSOR Switch HEATING Description...
  • Page 17 General Information Water cycle Installation Manual 17...
  • Page 18: Water Cycle

    : Solar panel, Sensors, Thermostats, party accessory and Field installation SOLAR THER- Interim heat exchanger, Water pump, etc. (no connector) (sold separately) MAL SYSTEM - To utilized hot water heated by SOLAR THERMAL SYSTEM, end-user must by LG AWHP Solar-Kit. 18 Air-to-Water Heat Pump...
  • Page 19: Parts And Dimensions

    General Information Parts and Dimensions Indoor unit(External) Description (unit:mm) Name Remarks Door Control panel is shown after this door is opened. Handle Used to cover or uncover the front case Installation Manual 19...
  • Page 20 General Information Indoor unit(Internal) 75.1 Description (unit:mm) Name Remarks Refrigerant Pipe Ø15.88mm Refrigerant Pipe Ø9.52mm Entering Water Pipe Male PT 1 inch Leaving Water Pipe Male PT 1 inch Control Panel Built-in Remote Controller Water Pump Max Head 7.5 / 6.5 m Safety Valve Open at water pressure 3 bar Cut-off power input to electric heater at 90 C (manual return at 55C)
  • Page 21: Indoor Unit (internal)

    General Information Outdoor unit(External) Product Heating Capacity : 12kW,14kW,16kW U3 Chassis (unit:mm) Supporter * : AHUW146A AHUW126A2 Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 21...
  • Page 22 General Information Product Heating Capacity : 9kW UE1 Chassis (unit:mm) Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Cover 22 Air-to-Water Heat Pump...
  • Page 23 General Information Product Heating Capacity : 9kW U4 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 23...
  • Page 24: Control Parts

    General Information Control Parts Control Box : Indoor Unit 1Ø Electric Heater 3Ø Electric Heater Description Name Remarks Voltage down(230V AC → 24V AC) Down transformer The terminal blocks allow easy connection of field wiring Terminal blocks Unit ELB The ELB protects the unit against overload or short circuit The ELB protects the water tank heater in sanitary water tank Water tank heater against overload or short circuit...
  • Page 25: Control Panel

    General Information Control Panel Description Name Display Panel Change Temperature Button Silent Mode On / Off Button Operation Mode Selection Button Water Heating Enable / Disable Button ESC Button Direction Button (Up, Down, Left, Right) Power Button Function Setting Button Temperature Setting Mode Button Temperature View Mode Button Programming Button...
  • Page 26: Wiring Diagram : Indoor Unit And Outdoor Unit (incl. Field Wiring)

    General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 1Ø, Outdoor : 1Ø) 26 Air-to-Water Heat Pump...
  • Page 27 General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 3Ø, Outdoor : 1Ø) Installation Manual 27...
  • Page 28 General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 3Ø 220V, Outdoor : 3Ø) 28 Air-to-Water Heat Pump...
  • Page 29 General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 3Ø 380-415V, Outdoor : 3Ø) Installation Manual 29...
  • Page 30: Installation Of Outdoor Unit

    Installation of Outdoor Unit 3. 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 31: Installation At Seaside

    3) Select a well-drained place. 1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment. 2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water Seasonal wind and cautions in winter •...
  • Page 32: Installation Of Indoor Unit

    Installation of Indoor Unit 4. 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 33: Mounting To Wall

    Installation of Indoor Unit Mounting to Wall Step 1. After releasing eight screws, detach front cover from the indoor unit. While detaching the front cover, grab the carrying handles at left and right sides of the front cover. Then pull into upward direction.
  • Page 34: Water Volume And Water Pump Capacity

    Installation of Indoor Unit Water Volume and Pump Capacity has different internal water pump according to the product capacity. The water pump is three speed-adjustable (Maximum / Medium / Minimum), so it may be required to change default water pump speed in case of noise by water flow. In most case, however, it is strongly recommended to set speed as Maximum.
  • Page 35: Water Volume And Expansion Vessel Pressure

    Installation of 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.
  • Page 36: Water Quality

    Installation of Indoor Unit Water Quality Water quality should be complied with EN 98/83 EC Directives. Requirement for resolved chemical ingredients is following table. Detailed water quality condition can be found in EN 98/83 EC Directives. Parameter Value Parameter Value Acrylamide 0.10 μg/ Fluoride...
  • Page 37: Conditions If Accessories Are Installed

    Installation of Indoor Unit Conditions if Accessories are Installed This section describes conditions about installation place where accessories are installed. Detailed installation for accessories (including supported accessory specification, wiring, PCB setting for accessory configuration, etc) will be dealt in separated chapter. Thermostat 1.
  • Page 38: Sanitary Water Tank And Sanitary Water Tank Kit / Solar Thermal Kit

    Installation of Indoor Unit Sanitary Water Tank and Sanitary Water Tank Kit / Solar Thermal Kit Installing sanitary water tank requires following considerations : • Sanitary water tank should be located at the flat place. • Water quality should be complied with EN 98/83 EC Directives. •...
  • Page 39 Installation of Indoor Unit Installing recirculation pump When is used with sanitary water 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 the sanitary water tank - The recirculation pump should be operated when sanitary water demand is not required.
  • Page 40: 3way Valve(2way Valve)

    Installation of Indoor Unit 2Way(3way) Valve 2Way(3way) valve should be located between the indoor unit and the water tank. • If enough space is not secured, the 2Way(3way) valve can be partially located inside the indoor unit by cutting out the bottom of the indoor unit. Before Cutting After Cutting Mice can not be appeared to prevent entering the indoor unit or attacking wires.
  • Page 41: Piping And Wiring For Outdoor Unit

    5. Piping and Wiring for Outdoor Unit Procedures about refrigerant piping and electric wiring at the outdoor are described in this chapter. Most of procedures are similar to those of LG Air Conditioner. Refrigerant Piping Before starting refrigerant piping, constraints in pipe length and elevation should be examined. After resolving all constraints, some preparations are required to proceed.
  • Page 42: Preparation For Piping

    Piping and Wiring for Outdoor Unit Preparation for Piping Preparation for piping is five steps. As main cause of refrigerant leakage is defects in flaring work, please carry out correct flaring work in the following steps. Step 1. Cut the pipes and the cable. •...
  • Page 43: Connecting Pipe To Indoor Unit

    Piping and Wiring for Outdoor Unit Connecting Pipe to Indoor Unit Connecting pipe to the indoor unit is two steps. Read following directions carefully. Step 1. Pre-tightening. • Align the center of the pipes and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings...
  • Page 44 Piping and Wiring for Outdoor Unit Step 3. Tightening • Align the center of the pipes and sufficiently tighten the flare nut by hand. Continuous • Tighten the flare nut with a wrench until the wrench clicks • Tightening torque is as following. Outside diameter Torque inch...
  • Page 45 Piping and Wiring for Outdoor Unit Connecting Pipe to Outdoor Unit (Product Heating Capacity : 9kW) • Align the center of the pipings and sufficiently tighten the flare nut with fingers. • Finally, tighten the flare nut with torque wrench until the wrench clicks.
  • Page 46: Electrical Wiring

    Piping and Wiring for Outdoor Unit Electrical Wiring Two kind of cables should be connected to the outdoor unit : One is ʻPower cableʼ, the other one is ʻConnecting cableʼ. Power cable is a cable which is used to supply external electricity to the outdoor unit. This cable is generally connected between external power source (such as main electric power distribution panel of userʼs house) and the outdoor unit.
  • Page 47: Circuit Breaker Specification

    Piping and Wiring for Outdoor Unit Circuit Breaker Specification • Select a power source that is capable of supplying the current required by the AWHP. • Use a recognized circuit breaker between the power source and the unit. A disconnection device to adequately disconnect all supply lines must be fitted. •...
  • Page 48 Piping and Wiring for Outdoor Unit Control Terminal (Terminal for Connecting Cable) Main Power Terminal (Terminal for Power Cable) Cable Clamp (or Cord Clamp) Cable Clamp (or Cord Clamp) Water Water Inlet Outlet Side Panel Insulation pad When connecting power cable, make sure the rubber bushes are properly attached in knock-out holes after removing the Insulation pad.
  • Page 49: Finalizing

    Piping and Wiring for Outdoor Unit 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 50: 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. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5.
  • Page 51: Evacuation

    Piping and Wiring for Outdoor Unit Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate Indoor unit the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open.
  • Page 52: Piping And Wiring For Indoor Unit

    Piping and Wiring for Indoor Unit 6. 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 53 Piping and Wiring for Indoor Unit Installing shut-off valve • While assembling two shut-off valves, that are found inside ʻAWHP Installation Kit (AET69364401)ʼ, pop sound will be heard when valve is open or close by rotating handles. It is normal condition because the sound is due to leakage of charged nitrogen gas inside the valve. The nitrogen gas is applied to secure quality assurance.
  • Page 54: Water Charging

    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 55: 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 56: Terminal Block Information

    Piping and Wiring for Indoor Unit Terminal Block Information (1Ø Electric Heater) Symbols used below pictures are as follows : - L, L1, L2 : Live (230V AC) - N : Neutral (230V AC) - BR : Brown , WH : White , BL : Blue , BK : Black Terminal Block 1 water flow switching between energizing water...
  • Page 57 Piping and Wiring for Indoor Unit Terminal Block Information (3Ø Electric Heater) Symbols used below pictures are as follows : - L, L1, L2 : Live (230V AC) - N : Neutral (230V AC) - BR : Brown , WH : White , BL : Blue , BK : Black Terminal Block 1 energizing water water flow switching between...
  • Page 58: Connecting With Outdoor Unit

    Piping and Wiring for Indoor Unit You should separate the communication wiring, in case of communication wiring length is over 40M Shield cable Separation Power Supply Communication Wiring Connecting with Outdoor Unit 1(L) 2(N) 3 Terminal block at outdoor unit Terminal block at outdoor unit 1Ø...
  • Page 59: 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. Before Installation Followings should be kept before installation •...
  • Page 60: How To Wire Thermostat

    Accessories Installation Choosing Heating / Cooling Thermostat • Heating / Cooling Thermostat must have ʻMode Selectionʼ feature to distinguish operation mode. • Heating / Cooling Thermostat must be able to assign heating target temperature and cooling target temperature differently. • If above conditions are not kept, the product can not operation properly. •...
  • Page 61: Final Check

    Accessories Installation Step 6. Find terminal block and connect wire as below. THERMOSTAT (Default : 230V AC) Mechanical type Thermostat Do not connect wire (N) as mechanical type thermostat does not require electric power supply. Do not connect external electric loads Wire (L) and (N) should be used only for operation Electric type thermostat.
  • Page 62: Sanitary Water Tank And Sanitary Water Tank Kit/solar Thermal Kit

    Accessories Installation Sanitary Water Tank and Sanitary Water Tank Kit/Solar Thermal Kit To establish sanitary water circuit, 3way valve and sanitary water 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 –...
  • Page 63: How To Install Sanitary Water Tank

    Accessories Installation How to Install Sanitary Water Tank For more detail information about installing sanitary water tank, please refer installation manual provided with sanitary water tank. PHS02060310(LGRTV200E) / PHS03060310(LGRTV300E) PHS02060320(LGRTV200VE) / PHS03060320(LGRTV300VE) (unit : mm) Installation Manual 63...
  • Page 64: How To Install Sanitary Water Tank Kit

    Accessories Installation How to Install Sanitary Water Tank Kit Follow below procedures Step 1 ~ Step 6. Step 1. Find a relay contactor and ELB(MCCB) in the kit. Bolt them into control box. (symbol Ⓐ at picture) Step 2. Connect ʻCN_B/HEAT(A)ʼ (White Connector) of the indoor unit PCB with relay contact using included cable (symbol Ⓑ...
  • Page 65 Accessories Installation Step 6. Find sanitary water tank sensor. Connect it to ʻCN_TH4ʼ (Red Connector) of the indoor unit PCB (symbol Ⓐ at the picture). The sensor wire should be passed through holes for sensor (symbol Ⓑ and Ⓒ at the picture). The sensor should be mounted correctly to the sensor hole of sanitary water tank.
  • Page 66: How To Wire Sanitary Water Tank Heater

    Accessories Installation How to Wire Sanitary Water Tank Heater Step 1. Uncover heater cover of the sanitary water 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 Wire specification...
  • Page 67: How To Install Solar Thermal Kit

    Water Tank Dry Contact LG Dry Contact is a solution for automatic control of air conditioning system at the owner's behest. In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from external sources like key-in lock, door or window switch etc specially used in Hotel rooms.
  • Page 68: 3way Valve

    Accessories Installation 3Way Valve How to Wire 3Way Valve Follow below procedures Step 1 ~ Step 2. Step 1. Uncover front cover of the indoor unit and open the control box. Step 2. Find terminal block and connect wire as below. 3WAY VALVE •...
  • Page 69: 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 70: System Set-up

    System Set-Up 8. System Set-Up 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 Turn off electric power supply before setting DIP switch •...
  • Page 71: Dip Switch Information

    System Set-Up DIP Switch Information Description Setting Default As Master Role when central controller is equipped As Slave Indoor unit + Outdoor unit is installed Indoor unit + Outdoor unit + Sanitary water tank Accessory installation is installed information Indoor unit + Outdoor unit + Sanitary water tank + Solar thermal system is installed...
  • Page 72 System Set-Up 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 73 System Set-Up • Following features are permitted in emergency operation : Operation On/Off VIEW TEMP button(*) Temperature adjust button (*) Sanitary water heating Enable / Disable (*) : Temperature measured by failed sensor is displayed as ʻ- -ʼ. (*) : Adjusted temperature is only used to control electric heater on / off condition. The product does not turn on / off according to the setting temperature at the control panel.
  • Page 74: Control Panel Setting

    System Set-Up Control Panel Setting How to enter installer setting mode Installer setting mode is to set the detail function of the control panel. If the installer setting mode is not set correctly, it could cause problems to the product, user injury or property damage.
  • Page 75 System Set-Up Summary Example of Fuction Code Display Function Code Value #1 Value #2 Code Item Detail Remark Function Test Run Description Instant cooling operation for charging additional refrigerant Note Value #1 Default Range Note Value #2 Default Range Disable 3 Min. Delay Function Factory use only Description...
  • Page 76: Summary

    System Set-Up Code Item Detail Remark Function Setting Temperature Selection Selection for setting temperature as air temperature or Description leaving water temperature 01:Air temperature 02:Leaving water temperature Note Air temperature as setting temperature is ONLY available when remote air sensor Value #1 Connection is enabled and Function Code 03 is set as 02.
  • Page 77 System Set-Up Code Item Detail Remark Note Lower Limit of setting range(FCU is NOT equipped) Value #2 Default Range 16~18C 'Setting Air Function Setting Air Temperature in Heating Mode Temperature' is Description Adjusting range of 'Setting Air Temperature' in heating mode used when user wants to set target Note...
  • Page 78 System Set-Up Detail Remark Code Item Setting Cut-off Temperature in Cooling Mode Function (FCU setting included) Determine leaving water temperature when the product is turned off. Description This function is used for preventing condensation on the floor in cooling mode. Cut-off temperature.
  • Page 79 System Set-Up Code Item Detail Remark Note Starting Date(Sunday:1,Monday:2, ···· ,Saturday:7) Value #1 Default the disinfection Range 01~07 mode will not be Note Starting Time in 24 hours(00~23) operated although Value #2 Default Value #1 of Code Range 00~23 26 is set as '01'. Function Setting Disinfection Operation •...
  • Page 80 System Set-Up Code Item Detail Remark Function Sanitary water heating timers Determine following time duration : operation time of sanitary tank heating, stop time of sanitary tank heating, and delay time of Description sanitary tank heater operating. This time duration defines how long time sanitary tank heating can Note be continued.
  • Page 81: Common Setting

    System Set-Up Common Setting • Function Code 01 : Test Run Test run should be performed when additional refrigerant charging is required. To charge the refrigerant, the product must run in Cooling mode. Test run instantly makes the product working in Cooling mode for 18 minutes.
  • Page 82: Temperature Range Setting

    System Set-Up Temperature Range Setting • Function Code 11 : Setting Air Temperature in Cooling Mode Determine cooling setting temperature range when air temperature is selected as setting temperature. Only available when remote air temperature sensor is connected • Accessory PQRSTA0 should be installed. •...
  • Page 83: Temperature Control Parameter Setting And Etc

    System Set-Up Temperature Control Parameter Setting • Function Code 21 : Setting Electric Heater On/Off temperature Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ʻOFF-ONʼ : - Value #1 : outdoor air temperature where half capacity of electric heater starts operation. - Value #2 : not used.
  • Page 84 System Set-Up • Function Code 23, 24, and 25 : Setting Weather-dependent operation Weather-dependent operation is that the product automatically adjusts target temperature (leaving water or room air) according to the outdoor air temperature. - Value #1 and Value #2 of Function Code 23 : range of outdoor air temperature - Value #1 and Value #2 of Function Code 24 : range of auto-adjustable target room air temperature - Value #1 and Value #2 of Function Code 25 : range of auto-adjustable target leaving water temperature...
  • Page 85 System Set-Up • Function Code 26 and 27 : Setting Disinfection operation Disinfection operation is special sanitary tank operation mode to kill and to prevent growth of viruses inside the tank. - Value #1 of Function Code 26 : Selecting enable or disable of disinfection operation. ʼ00ʼ for disable, and ʼ01ʼ...
  • Page 86 System Set-Up • Function Code 28 and 29 : Setting control parameter for Sanitary water heating operation Descriptions for each parameters are as following. - Value #1 of Function Code 28 : temperature gap from Value #2 of Function Code 28. - Value #2 of Function Code 28 : maximum temperature generated by AWHP compressor cycle.
  • Page 87 System Set-Up • Function Code 2A : Miscellaneous setting - Value #1 of Function Code 2A : determine electric heater and sanitary tank heater on and off. - Value #2 of Function Code 2A : not used. - Example : If Value #1 is set as ʻ0ʼ, then electric heater and sanitary tank heater are on and off according to control logic.
  • Page 88: Check Points, Maintenance And Troubleshooting

    • Refrigerant leakage degrades the performance. If leakage found, Product Installation Refrigerant leakage contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In this case, prepare drainage treatment Drainage treatment (for example, vessel to contain condensed dew) to avoid water drop.
  • Page 89: Maintenance

    Check Points, Maintenance and Troubleshooting Maintenance 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. Turn off the power before proceeding maintenance Category Item Check Point...
  • Page 90: Troubleshooting

    Check Points, Maintenance and Troubleshooting Troubleshooting operates not properly or it does not start operation, please check following list. Turn off the power before proceeding troubleshooting Troubleshooting for Problem while Operation Problem Reason Solution • Set target temperature correctly. • Setting target temperature •...
  • Page 91 Check Points, Maintenance and Troubleshooting Troubleshooting for Problem while Operation Code Description Cause Normal Condition Problem in Remote Room Air sensor • Resistance: 10k ohm at 25 centigrade (unplugged) Problem in Refrigerant (Inlet side) sensor ’ for Remote Room Air sensor Problem in Refrigerant (Outlet side) sensor •...
  • Page 92 92 Air-to-Water Heat Pump...

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