LG THERMA V AHBW036H0 Installation Manual
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LG THERMA V AHBW036H0 Installation Manual

LG THERMA V AHBW036H0 Installation Manual

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
Original instruction
P/NO : MFL68026604
www.lg.com

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Summary of Contents for LG THERMA V AHBW036H0

  • 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. TYPE : Air-to-Water Heat Pump Original instruction www.lg.com P/NO : MFL68026604...

  • Page 2: Table Of Contents

    Air-to-Water Heat Pump Installation Manual TABLE OF CONTENTS 1. SAFETY PRECAUTIONS......................3 2. INSTALLATION PARTS ........................7 3. GENERAL INFORMATION ......................8 MODEL INFORMATION ........................8 COMPONENTS ..........................8 ACCESSORIES..........................9 4. INSTALLATION ...........................10 SELECTION OF THE BEST LOCATION..................10 INSTALLATION CONDITIONS ....................11 INSTALLATION AT SEASIDE ......................12 SEASONAL WIND AND CAUTIONS IN WINTER ...............12 FOUNDATION FOR INSTALLATION...................13 INSTALLATION SCENES ......................14...

  • Page 3: Safety Precautions

    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 4 Safety Precautions Do not install the water pipe Use a vacuum pump or inert Make sure the connected system as Open loop type. (nitrogen) gas when doing condition of connector in leakage test or purging air. Do product after maintenance. not compress air or oxygen and do not use flammable gases.
  • Page 5 Turn the main power on 6 Do not touch electric parts The inside heater of product hours ago before the product for 10 minutes after main may operate during stop starting operation. power off. mode. It is intended to protect the product. •...
  • Page 6 Safety Precautions CAUTION n Installation Always check for gas Keep level even when Use two or more people to (refrigerant) leakage after installing the unit. lift and transport the unit. installation or repair of unit. • Low refrigerant levels may cause •...

  • Page 7: Installation Parts

    P/NO : MFL67212807 Owner's Manual OWNER’S MANUAL AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. TYPE : Air-to-Water Heat Pump (For High Temperature) www.lg.com P/NO : MFL67212706 Remote Controller Cable Installation Manual 7...

  • Page 8: General Information

    General Information 3. General Information With advanced inverter technology, is suitable for applications like under floor heating, 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 9: Accessories

    , there are various external auxiliary apparatus called as “accessories”. They are classified by "accessories" and "3 party accessories" according to the manufacturer. Accessories are presented LG Electronics, and 3 party accessories are presented by related manufacturers. Accessories supported by LG Electronics...

  • Page 10: Installation

    Installation 4. Installation CAUTION Be very careful while carrying the unit. - Do not have only one person carry the unit if it is more than 20 kg (44.1 lbs). - PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.

  • Page 11: Installation Conditions

    Installation 3. When installing the unit in a place that is constantly exposed to a strong wind like a coast or on a high story of a building, secure a normal fan operation by using a duct or a wind shield. •...

  • Page 12: Installation At Seaside

    Installation Installation at Seaside CAUTION 1. Unit should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. 2. Do not install the unit where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the unit.

  • Page 13: Foundation For Installation

    Installation Foundation for Installation • Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation. • Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts, nuts and washers each which are available on the market.) •...

  • Page 14: Installation Scenes

    Installation Installation Scenes CAUTION If is installed with pre-existing boiler, the boiler and should not be operated together. If entering water temperature of is above 55 °C, the system will stop operation to prevent mechanical damage of the unit. For detailed electric wiring and water piping, please contact authorized installer.
  • Page 15 Installation CASE 2: Connecting sanitary water tank (Under floor loop, Fan coil unit, and Radiator) Outdoor Indoor Fan coil unit Floor heating loop Radiator Hot water 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 16 Installation CASE 3: Connecting Solar thermal system Outdoor Indoor 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 17: Water Piping And Water Circuit Connection

    Installation Water Piping and Water Circuit Connection General considerations Followings are should be considered before beginning water circuit connection. • Service space should be secured. • Water pipes and connections should be cleaned using water. • Space for installing external water pump should be provided if internal water pump capacity is not enough for installation field.
  • Page 18 Installation When the water pipes are connected. It must be tightened the nut with two wrench. Otherwise pipes can be deformed. Water Out Union Water In WARNING Water Pipe Insulation Purpose of water pipe insulation is : To prevent heat loss to external environment. To prevent pipe breakage by freeze at winter season, ※...
  • Page 19 Installation Water pump performance 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. NOTICE Water pump speed To secure enough water flow rate, do not set water pump speed as "Min."...

  • Page 20: Water Quality

    Installation 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 1.5 mg/ 5.0 μg/...

  • Page 21: Electrical Wiring

    Installation Electrical Wiring 1. Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. WARNING Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual.
  • Page 22 Installation u Wire specification Power cable specification : The power cord connected to the unit should be complied with IEC 60245 or HD 22.4 S4 (Rubber insulated cord, type 60245 IEC 66 or H07RN-F) 1 Phase(Ø) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

  • Page 23: Connecting Cables

    Installation Connecting Cables General consideration Followings should be considered before beginning 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. • Make it sure that supplied electricity is enough to operate the unit, water tank heater, etc. The capacity of fuse also selected according to the power consumption.
  • Page 24 Installation Wiring procedure for power cable This cable is generally connected between external power source (such as main electric power distribution panel of user's house) and the unit. Before starting wiring, check if wire specification is suitable and read following directions and cautions VERY carefully. Step 1.

  • Page 25: Terminal Block Information

    Installation Terminal block information Symbols used below pictures are as follows : - L, L1, L2 : Live (220-240 V~ 50 Hz) - N : Neutral (220-240 V~ 50 Hz) - BR : Brown , WH : White , BL : Blue , BK : Black, GR/YL : Green/Yellow Terminal block 1 water flow switching between energizing water...

  • Page 26: Circuit Breaker Specification

    Installation Circuit breaker specification • Select a power source that is capable of supplying the current required by the unit. • 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 27: Wiring Of Main Power Supply And Equipment Capacity

    Installation Wiring of main power supply and equipment capacity 1. Use a separate unit power and heater power. 2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections. 3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker taking into account the line voltage drops.

  • Page 28: Installation Of The Final Check

    Installation Installation of the final check Check point Description - Check if the shut-off valves should be assembled Connection of Water with 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 gage Outside the unit Hydraulic pressure...

  • Page 29: Accessories Installation

    Accessories Installation 5. Accessories Installation The Heat Pump can interface to various accessories to extend its functionality and to improve user convenience. In this chapter, accessories and how to connect to The Heat Pump is introduced. See the ‘System Set-Up’ for a dip-switch settings and installer settings. For accessories supported by your supplier, please refer to installation manual of each accessories.
  • Page 30 Accessories Installation 3. Please fix remote controller upper part into <Connecting order> the setup board attached to the surface of the wall, as the picture below, and then, connect with setup board by pressing lower part. Wall Wall Side Side - Please connect not to make a gap at the remote controller and setup board’s upper and lower, right and left part.

  • Page 31: Thermostat

    Accessories Installation Thermostat Thermostat is generally used to control the unit by air temperature. When thermostat is connected to the unit, the unit operation is controlled by the thermostat. Installation condition CAUTION 1. USE 220-240 V~ Thermostat 2. Some electro-mechanical type thermostat has internal delay time to protect compressor. In that case, mode change can takes time more than user's expectation.
  • Page 32 Accessories Installation General information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Mechanical Heating Only (3) 230 V~ Electrical Heating Only (3) 230 V~ (1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.

  • Page 33: 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 34: 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 35: Sanitary Water Tank And Sanitary Water Tank Kit

    Accessories Installation Sanitary Water Tank and Sanitary Water Tank 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 - to - sanitary water tank - to - The Heat Pump.

  • Page 36: How To Install Sanitary Water Tank

    Accessories Installation WARNING 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 37: How To Install Sanitary Water Tank Kit

    Accessories Installation How to install sanitary water tank kit Follow below procedures Step 1 ~ Step 5. Step 1. Uncover the water tank kit and locate it on the wall. Step 2. Connect the water tank kit to the main power like the below figure 2. Step 3.

  • Page 38: Dry Contact

    Accessories Installation 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 39: Remote Air Sensor

    Accessories Installation Remote air sensor Remote temperature sensor can be installed any place a user wants to detect the temperature. How to Install Remote Temperature Sensor Step 1. After deciding where the remote temperature sensor is installed, decide the location and height of the fixing screws.

  • Page 40: 3Way Valve

    Accessories Installation 3Way Valve 3way valve is required to operate sanitary water tank. Role of 3way valve is flow switching between under floor heating loop and water tank heating loop. General information supports following 3way valve. Type Power Water flow direction Wiring From unit to under floor heating L1(9**) –...

  • Page 41: Air-Vent

    Accessories Installation Final check • Flow direction : - Water should flow from water outlet of the unit to sanitary tank water inlet when sanitary tank heating is selected. - To verify the flow direction, check temperature at the water outlet of the unit and water inlet of sanitary water tank.

  • Page 42: System Set-Up

    System Set-Up 6. System Set-Up The Heatpump 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 43: Dip Switch Information

    System Set-Up DIP switch information • If you set Dip switch when power is on, the changed setting will not be applied immediately. The changed setting will be enabled only when Power is reset or by pressing Reset button. 8 7 6 5 4 3 2 1 Description Setting Reserved...

  • Page 44: Emergency Operation

    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 45 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 unit does not turn on / off according to the setting temperature at the remote controller.

  • Page 46: 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 47 System Set-Up Summary Example of function code display Function Code Value #1 Value #2 Code Item Detail Remark Function Disable 3 minute delay Description Factory use only Value #1 Note Default Range Value #2 Note Default Range Function Remote air sensor connection Description Connection information about remote air sensor Value #1 Note...
  • Page 48 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 49 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 50 System Set-Up e t I l i a Function Setting outdoor temperature range for weather-dependent operation Description Setting outdoor Max/Min temperature for weather-dependent operation n i t t l u C ° C ° n i t t l u C °...
  • Page 51 System Set-Up Code Item Detail Remark Function Setting leaving water temperature range for weather-dependent operation Description Setting leaving water max / min temperature fo r weather-dependent operation Value #1 Note Upper limit of setting range Default 55 °C Range 35 ~ 57 °C Value #2 Note Lower limit of setting range Default...
  • Page 52 System Set-Up Code Item Detail Remark Function Sanitary water heating timers Determine following time duration : operation time of sanitary tank Description heating, stop time of sanitary tank heating, and delay time of sanitary tank heater operating. Value #1 Note This time duration defines how long time sanitary tank heating can be continued.

  • Page 53: Common Setting

    System Set-Up Common setting • Function Code 02 : Disable 3 minute delay Factory use only. • Function Code 03 : Remote air sensor connection If user connects remote air sensor to control the unit by room air temperature, the connection information should be notified to the unit.

  • Page 54: Temperature Range Setting

    System Set-Up Temperature range setting NOTICE • Function Code 13 : Setting air temperature in heating mode Determine heating setting temperature range when air temperature is selected as setting temperature. CAUTION Only available when remote air temperature sensor is connected. •...
  • Page 55 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 56: Temperature Control Parameter Setting And Etc

    System Set-Up Temperature control parameter setting and etc • Function Code 23, 24, and 25 : Setting weather-dependent operation Weather-dependent operation is that the unit 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...
  • Page 57 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 disable, and ’01’...
  • Page 58 System Set-Up • Function Code 28 and 29 : Setting control parameter for sanity 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 59 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 according to control logic.

  • Page 60: Check Points, Maintenance And Troubleshooting

    Parts inspection • There should be no apparently damaged parts inside the unit. Unit Installation • Refrigerant leakage degrades the performance. If leakage found, Refrigerant leakage contact qualified LG air conditioning installation person. 60 Air-to-Water Heat Pump...

  • Page 61: 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 62 Check Points, Maintenance and Troubleshooting Test run flow chart START Check whether the power cable and Operate the unit in heating mode. communication cable are completely connected Does Test operation start? Is cold water discharged for * Check the load (In/Out Temp.) more than 3 minutes ? * Check pipe length and amount of refrigerant...

  • Page 63: Vacuum & Charge Of Refrigerant

    Check Points, Maintenance and Troubleshooting 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. SVC Port Manifold gauge Manifold valve Pressure...
  • Page 64 Check Points, Maintenance and Troubleshooting When selecting a vacuum, you should select one which is capable of achieving 0.2 Torr of ultimate vacuum. Degree of vacuum is expressed in Torr, micron, mmHg, and Pascal (Pa). The units correlate as follows: Standard Unit atmospheric...
  • Page 65 Check Points, Maintenance and Troubleshooting Refrigerant Refrigerant cylinder cylinder 3. Location of SVC port Installation Manual 65...

  • Page 66: Troubleshooting

    Check Points, Maintenance and Troubleshooting Troubleshooting If the Heat Pump 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 67: 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 Problem in refrigerant (outlet side) sensor •...

  • Page 68: Model Designation

    Model Designation Serial number Chassis name / Function A : General heating heat pump H : Sanitary heating only T : High temperature heating heat pump Product electric power rating 6 : 220-240 V~ 50 Hz 8 :380-415 V3~ 50 Hz Heating capacity (kW) Ex) 16 : 16kW class Model Type...
  • Page 69 [Representative] LG Electronics Inc. EU Representative Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA...

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