LG Therma V Series Installation Manual

Air-to-water heat pump

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Installation manual (124 pages)

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Troubleshooting

Summary of Contents for LG Therma V Series

Page 1 [Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA For more information, Refer to the CD or LG Web site (www.lg.com). www.lg.com P/NO : MFL68681805...
Page 2: Table Of Contents
Air-to-Water Heat Pump Installation Manual TABLE OF CONTENTS PREFACE..........................5 1. SAFETY PRECAUTION....................6 WARNING .............................6 INSTALLATION WARNING .....................6 OPERATION WARNING ......................8 CAUTION ............................11 INSTALLATION CAUTION ....................11 OPERATION CAUTION......................11 2. INSTALLATION PART ....................12 INDOOR UNIT BOX ........................12 OUTDOOR UNIT BOX ........................12 3. GENERAL INFORMATION ....................13 MODEL INFORMATION......................13 TYPICAL INSTALLATION EXAMPLE ..................15 CASE 1..........................15...
Page 3 GENERAL CONSIDERATION....................53 TERMINAL BLOCK INFORMATION ..................54 CONNECTING WITH OUTDOOR UNIT ................56 ELECTRIC HEATER WIRING ....................56 8. ACCESSORIES INSTALLATION...................57 ACCESSORIES SUPPORTED BY LG Electronics ...............57 ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..........57 BEFORE INSTALLATION ......................58 THERMOSTAT ..........................58 GENERAL INFORMATION ....................58 HOW TO WIRE THERMOSTAT ....................59 FINAL CHECK........................60...
Page 4 SANITARY WATER TANK AND SANITARY WATER TANK KIT/SOLAR THERMAL KIT....61 GENERAL INFORMATION ....................61 HOW TO INSTALL SANITARY WATER TANK ..............62 HOW TO INSTALL SANITARY WATER TANK KIT..............63 HOW TO WIRE SANITARY WATER TANK HEATER............65 HOW TO INSTALL SOLAR THERMAL KIT................66 DRY CONTACT...........................66 REMOTE TEMPERATURE SENSOR..................66 3WAY VALVE ..........................67...
Page 5: Preface
Chapter 10 • Troubleshooting, maintenance, and error code list are presented to correct problems. REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE. Installation Manual 5...
Page 6: 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 unit. 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 7 Safety Precautions Do not modify or ex- Do not install, remove, For antifreeze, always tend the power cable. or reinstall the unit by contact the dealer or an yourself (customer). authorized service cen- ter. • There is risk of fire or •...
Page 8: Operation Warning
Safety Precautions n Operation Take care to ensure Do not place anything Do not plug or unplug that power cable could on the power cable. the power supply plug not be pulled out or during operation. damaged during opera- tion. •...
Page 9 Safety Precautions Do not touch any elec- Do not touch refriger- If you touch the pipe or tric part with wet ant pipe and water pipe internal parts, you hands. you should be or any internal parts should be wear protec- power off before touch- while the unit is operat- tion or wait time to re-...
Page 10 Safety Precautions Ventilate the unit from Turn the main power off Take care to ensure time to time when oper- when cleaning or main- that nobody could step ating it together with a taining the unit. on or fall onto the unit. stove, etc.
Page 11: Caution
Safety Precautions CAUTION n Installation Always check for gas Keep level even when Use two or more people (refrigerant) leakage installing the unit. to lift and transport the after installation or re- unit. pair of unit. • Low refrigerant levels •...
Page 12: Installation Part
Installation Part 2. Installation Part Thank you for choosing LG Electronics Air-to-Water Heat Pump Before starting installation, please make it sure that all parts are found inside the product box. INDOOR UNIT BOX Item Image Quantity Item Image Quantity Indoor unit...
Page 13: General Information
General Information 3. 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 cus- tomize the range of the application. In this chapter, general information of is presented to identify the installation proce- dure.
Page 14 General Information Model name and related information Model Name Capacity Built-In Electric Power Source Power Source Heater(kW) (Electric Heater) (Unit) Outdoor Unit Indoor Unit Heating(kW) Cooling(kW) AHUW036A2 AHNW03604A2 4(2+2) 220-240 V ~50Hz AHUW056A2 AHNW09604A2 4(2+2) 220-240V ~50Hz AHUW076A2 AHNW09604A2 4(2+2) 220-240V ~50Hz AHUW096A2 AHNW09604A2...
Page 15: Typical Installation Example
General Information Typical Installation Example CAUTION is installed with pre-existing boiler, the boiler and should not be oper- ated 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 pip- ing, please contact authorized installer.
Page 16: 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 17: 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 18: Cycle Diagram
General Information Cycle Diagram INDOOR UNIT OUTDOOR UNIT LIQUID SIDE 3-Way Service Valve Indoor Unit Outdoor Unit Plate Heat Heat Exchanger Exchanger Pressure sensor GAS SIDE Reversing Valve 3-Way Accumulator (Accessories) Service Valve COOLING COMPRESSOR HEATING Description Category Symbol Meaning Remarks Connector - Optional accessory (being sold separately)
Page 19: Water Cycle
General Information Water cycle Installation Manual 19...
Page 20 : 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. 20 Air-to-Water Heat Pump...
Page 21: 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 21...
Page 22: Indoor Unit(Internal)
General Information Indoor unit(Internal) 75.1 Description (unit:mm) 22 Air-to-Water Heat Pump...
Page 23: Outdoor Unit(External)
General Information Outdoor unit(External) Product Heating Capacity : 12kW,14kW,16kW U3 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 23...
Page 24 General Information Product Heating Capacity : 3kW UE Chasis (unit:mm) Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill 24 Air-to-Water Heat Pump...
Page 25 General Information Product Heating Capacity : 5kW,7kW,9kW U4 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 25...
Page 26: Control Parts
General Information Control Parts Control Box : Indoor Unit 1Ø Electric Heater 3Ø Electric Heater Description Name Remarks Terminal blocks The terminal blocks allow easy connection of field wiring 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 27: Control Panel
General Information Control Panel WATER WATER HEATING HEATING TEMP TEMP OPER OPER MODE MODE Name Display Change Temperature Button Water Heating Enable / Disable Button Power Button Operation Mode Selection Button Silent Mode On / Off Button Temperature Setting Mode Button Temperature View Mode Button Function Setting Button Programming Button...
Page 28: Wiring Diagram : Indoor And Outdoor (Incl. Field Wiring)
General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 1Ø, Outdoor : 1Ø) 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 4. 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
Installation of Outdoor Unit Installation at Seaside CAUTION 1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. 2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.
Page 32: Installation Of Indoor Unit
Installation of Indoor Unit 5. 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 in- stalling 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 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 Installation of Indoor Unit AHNW16606A2, AHNW16809A2 Pump model : Stratos Para 25/1-9 : Operation cutoff range WARNING Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit. Installation Manual 35...
Page 36: Pressure Drop
Installation of Indoor Unit Pressure Drop NOTICE When installing the product, install additional pump in consideration of the pressure loss and pump performance. If flow-rate is low, overloading of product can occur. Product pressure Rated flow-rate Pump Head [m] drop [m] Serviceable Head Model [LPM]...
Page 37: 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 38: 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 Direc- tives. Parameter Value Parameter Value Acrylamide 0.10 μg/...
Page 39: Piping And Wiring For Outdoor Unit
6. 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 resolv- ing all constraints, some preparations are required to proceed.
Page 40: 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 41: 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 42 Piping and Wiring for Outdoor Unit Step 2. 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 43 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 44: Electrical Wiring
Piping and Wiring for Outdoor 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. This cable is generally connected between external power source (such as main electric power distribution panel of user’s house) and the outdoor unit.
Page 45: Circuit Breaker Specification
Piping and Wiring for Outdoor Unit • European/International Technical Standard setting the limits for voltage changes, voltage fluctua- tions and flicker in public low-voltage supply systems for equipment with rated current ≤ 75A. • European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current ≤16A of ≻75A per phase.
Page 46: Wiring Procedure For Power Cable And Connecting Cable
Piping and Wiring for Outdoor Unit Wiring Procedure for Power Cable and Connecting Cable Step 1. : Disassemble the side panel from the outdoor unit by loosing screws. Step 2. : Connect Power cable to Main Power Terminal and Connecting cable to Control Termi- nal, respectively.
Page 47: 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 48: 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 49: Evacuation
Piping and Wiring for Outdoor Unit Evacuation 1. Connect the charge hose end described in the pre- ceding steps to the vacuum pump to evacuate the Indoor unit tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open.
Page 50: Piping And Wiring For Indoor Unit
Piping and Wiring for Indoor Unit 7. 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 51 Piping and Wiring for Indoor Unit WARNING Installing shut-off valve • While assembling two shut-off valves, that are found inside ‘AWHP Installation Kit (AET69364401)’, 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.
Page 52: 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 cir- cuit, and any other water circuits controlled by the product.
Page 53: 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 regu- lation.
Page 54: 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 55 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 56: Connecting With Outdoor Unit
Piping and Wiring for Indoor Unit CAUTION 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 57: Accessories Installation
In this chapter, specifications about supported 3rd party accessories and how to connect 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.
Page 58: Before Installation
Accessories Installation Before Installation WARNING Followings should be kept before installation • Main power must be turned off during installing 3rd party accessories. • 3rd party accessories should be comply with supported specification. • Proper tools should be chosen for installation. •...
Page 59: How To Wire Thermostat
Accessories Installation How to wire thermostat Follow below procedures Step 1 ~ Step 5. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3.
Page 60: Final Check
Accessories Installation Final check • DIP switch setting : Set DIP switch No. 8 to ‘ON’. Otherwise, the unit can not recognize the thermostat. • Remote Controller : - ‘Thermostat’ icon is displayed on the remote controller. - Button input is prohibited. Thermostat Icon NOTICE Thermostat Operation with Remote Controller...
Page 61: 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 62: 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 pro- vided with sanitary water tank. PHS02060310(LGRTV200E) / PHS03060310(LGRTV300E) PHS02060320(LGRTV200VE) / PHS03060320(LGRTV300VE) (unit : mm) 62 Air-to-Water Heat Pump...
Page 63: How To Install Sanitary Water Tank Kit
Accessories Installation How to Install Sanitary Water Tank Kit Fellow bellow procedures Spet 1 ~ Step 5 Step 1. Find magnetic switch and ELB(MCCB) in the kit. Fit them into the indoor unit control box with enclosed a braket and screws.(symbol Ⓐ at picture) Step 2.
Page 64 Accessories Installation Step 6. Find sanitary water tank sensor. Connect it to ‘CN_TH4’ (Red Connector) of the indoor unit PCB (symbol Ⓐ at the picture). The sensor wire should be passed through holes for sen- sor (symbol Ⓑ and Ⓒ at the picture). The sensor should be mounted correctly to the sen- sor hole of sanitary water tank.
Page 65: 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 WARNING...
Page 66: 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 67: 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. WARNING 3WAY VALVE •...
Page 68: 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 69: Conditions If Accessories Are Installed
Accessories Installation 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 ac- cessory configuration, etc) will be dealt in separated chapter. Thermostat CAUTION 1.
Page 70: Sanitary Water Tank And Sanitary Water Tank Kit / Solar Thermal Kit
Accessories Installation 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 71 Accessories Installation WARNING Installing recirculation pump When is used with sanitary water tank, it is STRONGLY recommended to install recircu- lation 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 72: 2Way(3Way) Valve
Accessories Installation 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 WARNING...
Page 73: System Set-Up
System Set-Up 9. System Set-Up is designed to satisfy various installation environment, it is important to set up sys- tem correctly. If not configured correctly, improper operation or degrade of performance can be ex- pected. DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch •...
Page 74: 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 75 System Set-Up NOTICE 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 76 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 ‘- -’. * : 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 77: Installer Setting
System Set-Up Installer Setting How to enter installer setting mode CAUTION Installer setting mode is to set the detail function of the remote controller. If the installer setting mode is not set correctly, it could cause problems to the unit, user injury or property damage.
Page 78: Summary
System Set-Up Summary Example of Fuction Code Display Function Code Value #1 Value #2 Code Item Detail Remark Function Additional refrigerant charging Description Instant cooling operation for charging additional refrigerant Value #1 Note Default Range Value #2 Note Default Range Function Disable 3 minute delay Description...
Page 79 System Set-Up Code Item Detail Remark Function Setting temperature selection Description Selection for setting temperature as air temperature or leaving water temperature. Value #1 Note 01:Air temperature 02:Leaving water temperature Air temperature as setting temperature is ONLY available when remote air sensor. Connection is enabled and Function code 03 is set as 02.
Page 80 System Set-Up Code Item Detail Remark Value #2 Note Lower limit of setting range(FCU is not equipped) Default 16 °C Range 16 ~ 18 °C Function Setting air temperature in heating mode Description Adjusting range of 'Setting Air Temperature' in heating mode 'Setting air temperature' is Value #1 Note...
Page 81 System Set-Up e t I l i a i t c i t t c i r f f o DIP Switch t i w setting is i t t described in Description Setting for using Step 1 capacity Setting for using Step 2 capacity Chapter 6 of of electric heater of electric heater...
Page 82 System Set-Up Code Item Detail Remark Function Setting Heating flow temperature range for weather-dependent operation Description Setting Heating flow max / min temperature for weather-dependent operation Value #1 Note Upper limit of setting range * : Electric heater Default 57 °C is not used.
Page 83 System Set-Up Code Item Detail Remark Function Miscellaneous setting Description Determine electric heater and water heater on and off Value #1 Note 00: Operate both electric heater and Domestic hot water tank heater 01: Operate only Domestic hot water tank heater Default Range 00 ~ 01...
Page 84: 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 refrig- erant, the product must run in Cooling mode. Test run instantly makes the product working in Cool- ing mode for 18 minutes.
Page 85: 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. NOTICE Only available when remote air temperature sensor is connected. • Accessory PQRSTA0 should be installed. •...
Page 86 System Set-Up Keep pressing programming button for 3 seconds to enter setting screed drying mode. Press programming button to select function code 18. Press left, right button to move to screed drying setting part. Press up, down button to adjust “01” or “00”...
Page 87: Temperature Control Parameter Setting
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 ‘OFF-ON’ : - Value #1 : outdoor air temperature where half capacity of electric heater starts operation. - Value #2 : not used.
Page 88 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 tem- perature...
Page 89 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. ’00’ for dis- able, and ’01’...
Page 90 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 91 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 ‘0’, then electric heater and sanitary tank heater are on and off ac- cording to control logic.
Page 92: 10. 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 bot- tom of the indoor unit. In this case, prepare drainage treatment (for Drainage treatment example, vessel to contain condensed dew) to avoid water drop.
Page 93: 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. CAUTION Turn off the power before proceeding maintenance Category Item Check Point...
Page 94: Troubleshooting
Check Points, Maintenance and Troubleshooting Troubleshooting operates not properly or it does not start operation, please check following list. CAUTION Turn off the power before proceeding troubleshooting Troubleshooting for Problem while Operation Problem Reason Solution • Set target temperature correctly. •...
Page 95: Troubleshooting For Error Code
Check Points, Maintenance and Troubleshooting Troubleshooting for Error Code Code Description Cause Normal Condition Problem in remote room air sensor • Resistance: 10 kΩ at 25 centigrade (unplugged) → for Problem in refrigerant (inlet side) sensor Remote room air sensor •...
Page 96: Airborne Noise Emission
Check Points, Maintenance and Troubleshooting Airborne Noise Emission The A-weighted sound pressure emitted by this product is below 70 dB. • The noise level can vary depending on the site. The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further precautions are required.

This manual is also suitable for:

Therma v ahnw03604a2 Therma v ahuw036a2 Therma v ahuw076a2 Therma v ahnw09604a2 Therma v ahuw096a2 Therma v ahuw126a2 ... Show all

LG Therma V Series Installation Manual

Preface

1 Safety Precaution

2 Installation Part

3 General Information

4 Installation of Outdoor Unit

5 Installation of Indoor Unit

6 Piping and Wiring for Outdoor Unit

7 Piping and Wiring for Indoor Unit

8 Accessories Installation

9 System Set-Up

10 Check Points, Maintenance and Troubleshooting

Quick Links

Troubleshooting

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Summary of Contents for LG Therma V Series

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