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LG ARNH963K2A2 Installation Manual

Hydro kit (for medium temperature)
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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 :
Hydro Kit
P/NO : MFL67086705
(For Medium Temperature)
http://www.lghvac.com
www.lg.com

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Summary of Contents for LG ARNH963K2A2

  • 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 : (For Medium Temperature) Hydro Kit http://www.lghvac.com www.lg.com P/NO : MFL67086705...

  • Page 2: Table Of Contents

    Hydro Kit Installation Manual TABLE OF CONTENTS 1. SAFETY PRECAUTIONS......................3 2. INSTALLATION PARTS ........................6 3. GENERAL INFORMATION ......................7 MODEL INFORMATION .......................7 ACCESSORIES ..........................9 4. INSTALLATION ..........................9 SELECTION OF THE BEST LOCATION ..................9 INSTALLATION SPACE ........................9 FOUNDATION FOR INSTALLATION ..................10 WATER PIPING AND WATER CIRCUIT CONNECTION ............11 WATER TANK TEMPERATURE SENSOR .................15 SOLAR THERMAL KIT .......................16 INSTALLATION SCENES ......................17...

  • 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 Be sure the installation area Do not install the unit Use a vacuum pump or inert does not deteriorate with outdoor. (nitrogen) gas when doing age. leakage test or purging air. Do not compress air or oxygen and do not use flammable gases.
  • Page 5 Safety Precautions Turn the main power off Take care to ensure that For installation, always when cleaning or nobody could step on or fall contact the dealer or an maintaining the unit. onto the unit. Authorized Service Center. • There is risk of electric shock. •...

  • Page 6: Installation Parts

    Installation Parts 2. Installation Parts Thank you for choosing LG Electronics Hydro Kit Before starting installation, please make it sure that all parts are found inside the unit box. Item Image Quantity Installation Manual INSTALLATION MANUAL AIR CONDITIONER Please read this installation manual completely before installing the product.

  • Page 7: General Information

    By Interfacing to various accessories user can customize the range of the application. Model Information Model name and related information Hydro Kit Type Model Unit ARNH963K2A2 Power Supply Ø, V, Hz 1, 208/230, 60 Cooling kcal/h 24100 Btu/h...
  • Page 8 , there are various external auxiliary apparatus called as Hydro Kit "accessories". They are classified by "accessories" and "3rd party accessories" according to the manufacturer. Accessories are presented LG Electronics, and 3rd party accessories are presented by related manufacturers. Accessories supported by LG Electronics Item...

  • Page 9: Accessories

    Installation 4. Installation Selection of the best location 1. Select space for installing the unit, which will meet the following conditions: The place where the unit shall be installed inside. The place shall easily bear a load exceeding four times of the unit weight. The place where the unit shall be leveled.

  • Page 10: Foundation For Installation

    Installation Foundation for Installation • Fix the unit tightly with bolts as shown below so that the unit will not fall down due to earthquake. • Noise and vibration may occur from the floor or wall since vibration is transferred through the installation part depending on installation status.

  • Page 11: Water Piping And Water Circuit Connection

    Installation Water Piping and Water Circuit Connection General Considerations Followings should be considered before beginning water circuit connection. • Service space should be secured. • Water pipes and connections should be cleaned using water. • If needed, reserve space for installing external water pump. •...
  • Page 12 Installation Water cycle * For the water pipe system, use the closed loop type. 1. Select parts whose pressure specifications are greater the operating water pressure for protection against excessive pressure. 2. For the water pipe, use anti-corrosion steel pipe or copper pipe. 3.
  • Page 13 Installation * WATER TANK & FLOOR HEATING INSTALLATION 1. Use the pump (1) with sufficient capacity to assure loss of overall water pressure and to supply water to the Hydro Kit 2. Install the shut-off valve (2) on both sides of the pump to clean and repair the pump. 3.
  • Page 14 Installation Strainer - Use the 50 mesh strainer. (Exclude scale diameter of 0.4mm or less and other net) - Check the strainer direction and assemble on the inlet hole (Refer to picture) - Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for assembly. - Install the service port facing downward.

  • Page 15: Water Tank Temperature Sensor

    Installation Water Tank Temperature Sensor Installation Condition Installing Domestic Hot Water (DHW) tank requires following considerations : • Domestic Hot Water tank should be located at the flat place. • Water quality should comply with local or international plumbing code. •...

  • Page 16: Solar Thermal Kit

    Installation Solar Thermal Kit How to Install Solar Thermal Kit Step 1. Check the diameter of pre-installed pipes. (symbol Ⓐ and Ⓑ) Step 2. If the diameter of pre-installed pipes is different from diameter of solar thermal kit, it is necessary to reduce or extend of pipeʼs diameter.

  • Page 17: Installation Scenes

    Installation Installation Scenes Some installation scenes are presented for example. As these scenes are conceptual figures, installer should optimize the installation scene according to the installation conditions. This is a simple concept diagram. Refer to the water cycle(page 12~13) for installation components. 1) Floor Heating only (Without mixing tank) Fan coil unit Floor heating loop...
  • Page 18 Installation 3) Floor Heating + Hot water Fan coil unit Floor heating loop Radiator Hot water Domestic Hot Water tank City water 4) Floor Heating + Hot Water + Solar Thermal Pump 3way valve 2way valve Bypass valve Solar heat source Fan coil unit Floor heating loop Radiator...
  • Page 19 Installation CAUTION: • If the unit is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove sludge and scale. • Installing sludge strainer in the water loop is very important to prevent performance degrade. •...

  • Page 20: Refrigerant Piping

    Installation Refrigerant Piping Cut the pipes - Use the accessory piping kit or the pipes Copper purchased locally. Slanted Uneven Rough tube 90° - Measure the distance between the indoor and the outdoor unit. - Cut the pipes a little longer than measured distance.
  • Page 21 Installation Precaution when connecting Heat Recovery systems - One connection of refrigerant pipe for HR unit is insufficient for the flow of refrigerant. Join two pipes with a branch pipe when connecting the Hydro Kit - The pipe number of the connected gas pipe and liquid pipe must be same.

  • Page 22: How To Connect Wirings

    Installation How to connect wirings Remove the box cover of electric parts and connect the wiring. Lock nut CAUTION: Conduit Conduit When connecting the power and communication mounting plate cable, always use the terminal connector (O- Communi- Ground Ground Ground cation cable ring, Y-ring).

  • Page 23: Connecting Cables

    Installation Connecting Cables Types of the cables Classification types Cable cross section Power cable(CV) Communication cable(VCTF-SB) 1.0~1.5 The distance between communication cable and power cable - If the power cable and communication cable are too close together, system malfunction may occur with electrostatic, electromagnetic combination effect causing the interference signal.

  • Page 24: Accessories Installation

    • Dry contact is an accessory supplied by LG and installed by referring to installation manual. • 3way valve, thermostat and pump are external parts for installation, which are not supplied by LG. After checking each part carefully, install external parts respectively.
  • Page 25 Accessories Installation Installation of Wired Remote Controller 1. Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup. - Mount on a flat surface do not torque or bend the PCB board while installing. - If the wired remote controller is being attached to a handy box, mount the wired remote controller subbase with threaded screws to the...
  • Page 26 • When installing the extension cable, check the connecting direction of the connector of the remote controller side and the product side for correct installation. • When roughing-in the communication cable provided LG, do not cut the cable or extend cable length. The female plug connector must be installed at the Thermostat location.

  • Page 27: Water Pump Interlock Wiring (Field Provided)

    Accessories Installation Water Pump Interlock Wiring (Filed Provided) • Select the suitable pump by referring to the flow rate table with water Pump temperature difference between the entrance and the exit. (main) • It is recommended that the flow rate is Rated water flow (refer to the specification of PDB) •...

  • Page 28: 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 1~230 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 29 Accessories Installation General Information supports following thermostats. Hydro Kit Type Power Operating Mode Supported Heating Only (3) 1~ 230 V Heating / Cooling (4) Mechanical Heating Only (3) 1~ 24 V Heating / Cooling (4) Heating Only (3) 1~ 230 V Heating / Cooling (4) Electrical Heating Only (3)
  • Page 30 Accessories Installation How to connect the field provided optional thermostat to the Hydro Kit Follow below procedures Step 1 ~ Step 6. 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 1~ 230 V, go to Step 4. Otherwise, if it is 1~ 24 V, go to step 3.
  • Page 31 Accessories Installation Step 6. Find terminal block and connect wire as below. THERMOSTAT WARNING : (Default : 1~ 230 V) Mechanical type Thermostat. Do not connect wire (N) as mechanical type thermostat does not require electric power supply. CAUTION: Do not connect external electric loads. Wire (L) and (N) should be used only for operation Electric Thermostat type thermostat.

  • Page 32: Remote Temperature Sensor

    Accessories Installation Remote Temperature 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 33: 3Way Valve

    Accessories Installation 3Way Valve 3way valve is required to operate Domestic Hot 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. Hydro Kit Type Power Operating Mode Supported...

  • Page 34: 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 35: Dry Contact

    Accessories Installation Dry Contact LG Dry Contact is a solution for automatic control of HVAC system at the owner's best. In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from external sources like key-in lock, door or window switch etc specially used in Hotel rooms.

  • Page 36: Independent Power Module

    Accessories Installation Independent Power Module Independent power module is required to protect a plate heat exchanger burst. When the outdoor unit is operating, if Hydro Kit is suddenly powered off, a plate heat exchanger burst may happen during oil-return and defrosting cycle in cooling mode. How to install Independent Power Module Step 1.
  • Page 37 Accessories Installation How to wire Independent Power Module Step 1. Turn the power off using circuit breaker. Step 2. Disconnect the EEV cable of the indoor units PCB(CN-EEV) Step 3. Connect the independent power kit(CN-EEV/LOAD) to the indoor units EEV, using harness 1. Step 4.

  • Page 38: System Set-Up

    System Set-Up 6. System Set-Up (For Medium Temperature) is designed to satisfy various installation environment, it is Hydro Kit important to set up system correctly. If not configured correctly, improper operation or degrade of performance can be expected. DIP Switch Setting •...

  • Page 39: Group Control Setting

    System Set-Up Group Control Setting Group Control - Wired remote controller 1 + Many of Hydro Kit Slave Slave Slave Master Display Error Message Only connect serial signal and GND lines between slave indoor unit Master Signal 12 V - Dip Switch in PCB ¿...
  • Page 40 System Set-Up 5. In case that the indoor unit has an abnormal problem an error code will be displayed on the wired remote controller. With the exception of the indoor unit with the error, you can control each indoor unit individually. 6.
  • Page 41 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 42 System Set-Up • Following features are permitted in emergency operation : Operation On/Off VIEW TEMP button(*) Temperature adjusting button(**) Domestic Hot Water heating button (*) : Temperature measured by failed sensor is displayed as ʻ- -ʼ. (**) : The unit is not turned on/off according to the setting temperature at the remote controller. It is turned on/off according to the thermostat signal •...

  • Page 43: 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 44 System Set-Up Summary Example of Fuction Code Display Function Code Value #1 Value #2 Function Default Value #1 Value #2 Remark Test Run 01:01 01 : Set Disable 3 Min. Delay 02:01 01 : NOT connected. Remote Air Sensor Connection 03:01 02 : connected.
  • Page 45 System Set-Up Common Setting • Function Code 01 : Test Run Test run should be performed when charging the additional refrigerant is required. The unit must be operated in Cooling mode when the refrigerant is being charged. Test run instantly makes the unit operate in Cooling mode for 18 minutes.
  • Page 46 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 47 System Set-Up Temperature Control Parameter Setting and Etc • Function Code 22 : Setting Cut-off Temperature in Cooling Mode (FCU setting included) Determine leaving water temperature when the unit is turned off. This function is used for preventing condensation on the floor in cooling mode. - Value #1 : cut-off temperature.
  • Page 48 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.
  • Page 49 Determine the difference between target inlet water temperature and target outlet water temperature from water flow rate. - Value #1 of Function Code 2C : Water flow rate which flows to Hydro Kit Water flow rate (l/min) Setting value ARNH963K2A2 45~50 51~55 56~60 61~65 66~70...

  • Page 50: Test Run

    Test Run 7. Test Run Caution before Operation Test • Check whether water flow is smoothly supplied. • Check whether the flow switch properly operates. • Check whether the connection status is good. • Check whether the power cable and communication cable are completely connected. •...

  • Page 51: Installing Recirculation Pump

    Test Run Installing recirculation pump WARNING : When Hydro Kit is used with the DHW tank, it is STRONGLY recommended to install recirculation pump to prevent cold water at the end of hot water supply flooding out and to stabilize the water temperature inside the DHW tank.

  • Page 52: Installing Thermostat

    Test Run Installing Thermostat • DIP switch setting : Set DIP switch No. 8 to ʻONʼ. Otherwise, the unit can not recognize the thermostat. • Remote Controller : - ʻThermostatʼ icon is displayed on the remote controller. - Button input is prohibited. Thermostat Icon NOTICE Thermostat Operation with Remote Controller...

  • Page 53: Installing 3Way Valve

    Test Run Sequence of thermostat operation - How to set the heating temperature when thermostat is connected to the Hydro Kit. Set thermostat Adjust the heating temperature, to the heating mode using the remote controller - How to set the cooling temperature when thermostat is connected to the Hydro Kit. Set thermostat Adjust the cooling temperature, to the heating mode...

  • Page 54: Troubleshooting

    Test Run Troubleshooting • This function displays the disorder types at the self diagnostics and the occurrence of the disorder for the product. • The disorder display shows the code in the following table on the red/green LED of the wired remote controller and outdoor unit control board.
  • Page 55 1. Please call the installing contractor of your product, as warranty service will be provided by them. 2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026. CANADA Service call Number # : (888) LG Canada, (888) 542-2623...

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