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INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly
Hydro Kit (For Medium Temperature)
Original instruction
[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
MFL67086712
Copyright © 2018 LG Electronics Inc. All Rights Reserved.
001
www.lg.com
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Table of Contents
Related Manuals for LG Hydro Kit ARNH10GK2A4
Summary of Contents for LG Hydro Kit ARNH10GK2A4
- Page 1 Please retain this installation manual for future reference after reading it thoroughly Hydro Kit (For Medium Temperature) Original instruction [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 www.lg.com...
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Page 2: Table Of Contents
Hydro Kit Installation Manual TABLE OF CONTENTS 1. Safety Precautions........................3 2. Installation Parts ..........................7 3. General Information........................8 Model Information ..........................8 General Information ........................9 4. Installation ..........................10 Selection of the best location.......................10 Installation Space ........................10 Foundation for Installation......................11 Water Piping and Water Circuit Connection ................12 Sanitary Water Tank and Sanitary Water Tank Kit ...............16 Solar Thermal Kit .........................18 Installation Scenes........................19... -
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 • For antifreeze, always contact the dealer or an authorized service center. - Almost the antifreeze is a toxic product. • The refrigerant of this product is R410A. - The installation tool such as manifold gauge should be complied with R410A.
- Page 5 Safety Precautions • Do not allow water to run into electric parts. - There is risk of fire, failure of the unit, or electric shock. • Do not store or use flammable gas or combustibles near the unit. - There is risk of fire or failure of unit. •...
- Page 6 Safety Precautions Installation • Always check for gas (refrigerant) leakage after installation or repair of unit. - Low refrigerant levels may cause failure of unit. • Keep level even when installing the unit. - To avoid vibration or water leakage. •...
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Page 7: 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 Remote Cotroller / Cable Sensor Holder Water Tank Temperature... -
Page 8: General Information
General Information 3. General Information With advanced inverter technology, Hydro Kit 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. Model Information Model name and related information Hydro Kit Type Power Supply... -
Page 9: General Information
To extend the functionality of Hydro Kit, there are various external auxiliary apparatus called as "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... -
Page 10: Installation
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 11: 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 12: 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. • Space for installing external water pump should be provided. •... - Page 13 Installation Water cycle * For the water pipe system, use the closed loop type. 1. For the parts of the water pipe system, use the parts above the design water pressure. 2. For the water pipe, do not use steel pipe. 3.
- Page 14 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 15 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.
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Page 16: Sanitary Water Tank And Sanitary Water Tank Kit
Installation Sanitary Water Tank and Sanitary Water Tank Kit Installation Condition Installing sanitary water (DHW) tank requires following considerations : • Sanitary water tank should be located at the flat place. • Water quality should comply with EN 98/83 EC Directives. •... - Page 17 Installation WARNING : Installing recirculation pump When Hydro Kit is used with the sanitary water 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 sanitary water tank. - The recirculation pump should be operated when sanitary water demand is not required.
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Page 18: 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 pipe’s diameter. -
Page 19: 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... - Page 20 Installation 3) Floor Heating + Hot water Fan coil unit Floor Radiator heating loop Hot water Sanitary 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 Radiator...
- Page 21 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. •...
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Page 22: Refrigerant Piping
Installation Refrigerant Piping Cut the pipes and the cable - 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 23 Installation Precaution when connecting Heat Recovery systems PRHR042 / PRHR032 / PRHR022 - 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 (Up to 16kW (54kBut/h) capacity model: 10HP).
- Page 24 Installation Precaution when connecting Heat Recovery systems PRHR083 / PRHR063 / PRHR043 / PRHR033 / PRHR023 - 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 (Up to 61kBTU capacity model: 10HP).
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Page 25: How To Connect Wirings
Installation How to connect wirings Remove the box cover of electric parts and connect the wiring. CAUTION: When connecting the power and communication Communi- cable, always use the terminal connector (O- Ground cation cable Communi- Power cation cable ring, Y-ring). cable Power cable Make sure to tighten so that the screw of the... - Page 26 Installation CAUTION: After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have separate power specially for the air conditioner. As for the method of wiring, follow the circuit diagram pasted on the inside of control box cover. 2) Provide a circuit breaker switch between power source and the unit.
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Page 27: Connecting Cables
Installation Connecting Cables The distance between communication cable and power cable - If the power cable and communication cable are tied together, system malfunction may occur with electrostatic, electromagnetic combination effect causing the interference signal. If communication cable is connected along with power cable, secure at least 50 mm distance between indoor unit power cable and communication cable. -
Page 28: Accessories Installation
• Connect 3way valve, if both floor heating and hot water is used. • Connect the separately purchased thermostat. • Dry contact is an accessory supplied by LG and installed by referring to the attached installation manual. • 3way valve, thermostat and pump are external parts for installation, which are not supplied by LG. - Page 29 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. - Please set it up not to bend because poor setup could take place if setup board bends. Please set up remote controller board fit to the reclamation box if there is a reclamation box.
- Page 30 Accessories Installation 4. Please connect indoor unit and remote controller using connection cable. Male plug ends Please check if connector is normally connected. Hydro Kit Female plug ends Optional extension cable (purchased separately) 5. Please use extension cable if the distance between wired remote controller and indoor unit is more than 10 m.
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Page 31: Main Pump Connection
Accessories Installation Main Pump Connection • 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 32: 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 33 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 34 Accessories Installation How to Wire Thermostat 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 35 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.
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Page 36: 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 37: 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. Hydro Kit Type Power Operating Mode Supported Selecting “Flow A”... - Page 38 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.
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Page 39: 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 40: 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 41 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.
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Page 42: 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 43: Group Control Setting
System Set-Up Group Control Setting Group Control - Wired remote controller 1 + Many of Hydro Kit LGAP Network System Slave Slave Slave Master Display Error Message Only connect serial signal and GND lines between slave indoor unit Signal 12 V Master - DIP Switch in PCB ¿... - Page 44 System Set-Up CAUTION: • Indoor unit(Hydro Kit)’s group setting is possible which connected same outdoor unit. • To install Master and Slave indoor unit, the DIP Switch setting should be same. • Group control is not possible between hydro kit and air conditioner. •...
- Page 45 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 46 System Set-Up • Duplicated trouble : Option trouble with Slight or Heavy trouble If option trouble is occurred with slight (or heavy) trouble at the same time, the system puts higher priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is occurred. Therefore, sometimes sanitary water heating can be impossible in emergency operation mode.
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Page 47: Installer Setting
LG warrenty. h Installer setting password Main screen →... - Page 48 System Set-Up Summary • You can set the product user functions. • Some functions may not be displayed/operated in some product types. Test Description Test Run Checking whenever Amount of refrigerant is normal 3 Minutes Delay Factory use only Remote sensor active Connection information about remote air sensor Temp.
- Page 49 System Set-Up Test Description CN_CC Setting Dry Contact installation set. Pump frequency setting(LPM) Setting water flow rate. HS Model Setting Setting whether to install HS Model or not Refrigerant Leak Sensor Setting whether to install Refrigerant Leak detector or not IDU Address Verification Displaying the IDU address.
- Page 50 System Set-Up Common Setting • 3 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 51 System Set-Up Temperature Range Setting • Air cooling set temp. 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. • Also, Remote air sensor connection should be set properly. •...
- Page 52 System Set-Up Temperature Control Parameter Setting • Water supply off temp. during cooling Determine leaving water temperature when the product is turned off. This function is used fr preventing condensation on the floor in cooling mode. - Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed. - FCU : determines if FCU is installed or not.
- Page 53 System Set-Up • Tank disinfection setting 1, 2 Disinfection operation is special DHW tank operation mode to kill and to prevent growth of viruses inside the tank. - Disinfection active : Selecting enable or disable of disinfection operation. - Start date : Determining the date when the disinfection mode is running. - Start time : Determining the time when the disinfection mode is running.
- Page 54 System Set-Up • Tank setting 1, 2 Descriptions for each parameters are as following. - Min temp. : temperature gap from Max outdoor temp. - Max outdoor temp. : maximum temperature generated by AWHP compressor cycle. - Example : If Min temp. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see the graph) will be started when the water tank temperature is below 45 °C….
- Page 55 System Set-Up • DHW time setting Determine following time duration : operation time of DHW tank heating, stop time of DHW tank heating, and delay time of DHW tank heater operating. - Active time : This time duration defines how long time DHW tank heating can be continued. - Stop time : This time duration defines how long time DHW tank heating can be stopped.
- Page 56 System Set-Up • Night time power setting Setting to distinguish power-on time type of model using night power. Type Setting range 2/8H 24H (This function is selectable when receiving night power timer function from indoor unit) • TH on/off Variable, heating air Setting Thermal on/off Air Temperature gap in heating mode Th On Th Off...
- Page 57 System Set-Up • Pump frequency setting(LPM) Setting water flow rate Determine the difference between target inlet water temperature and target outlet water temperature from water flow rate. Water flow rate (l/min) Setting value ARNH10GK2A4 ARNH04GK2A4 20~22 45~50 23~24 51~55 25~26 56~60 27~28 61~65...
- Page 58 System Set-Up • Low Noise Mode Priority Setting whether to control in IDU or in ODU 1) Setting outdoor management of low noise operation It is controlled by outdoor unit according to switch setting value of low noise operation of outdoor unit PCB.
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Page 59: 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 60: Troubleshooting
Test Run Troubleshooting If Hydro Kit operates not properly or it does not start operation, please check following list. Error Error Type Main Reasons Air temperature sensor error Air temperature sensor disconnection or short circuit Gas side temperature sensor disconnection or short Gas side temperature sensor error circuit No communication between wired... - Page 61 Test Run 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.
- Page 62 62 Hydro Kit...