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Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be fol-
lowed.

Be sure to read before installing the unit.

Be sure to observe the cautions specified here as they include important items related to safety.

Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified
by the following indications.

Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

Hydro Kit

Installation Manual

ENGLISH

1. Safety Precautions

Installation

Do not use a defective
or underrated circuit
breaker. Use this appli-
ance on a dedicated
circuit.

• There is risk of fire or

electric shock.

For electrical work,
contact the dealer, sell-
er, a qualified electri-
cian, or an Authorized
Service Center.

• There is risk of fire or

electric shock.

Always ground the unit.

• There is risk of fire or

electric shock.

Install the panel and
the cover of control
box securely.

• There is risk of fire or

electric shock.

Always install a dedi-
cated circuit and break-
er.

• Improper wiring or instal-

lation may cause fire or
electric shock.

Use the correctly rated
breaker or fuse.

• There is risk of fire or

electric.

Содержание ARNH04GK2A2

Страница 1: ...roughly Hydro Kit For Medium Temperature Original instruction INSTALLATION MANUAL AIR CONDITIONER For more information Refer to the CD or LG Web site www lg com 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 G...

Страница 2: ...19 Installation Scenes 20 Refrigerant Piping 23 How to connect wirings 25 Wiring Connection 25 Connecting Cables 26 5 Accessories Installation 27 Location of Accessories and External Parts Connection 27 Main Pump Connection 30 Water tank temperature sensor Connection 30 Thermostat 31 Remote Temperature Sensor 36 3Way Valve 37 2Way Valve 39 Dry Contact 40 Independent Power Module 41 6 System Set Up...

Страница 3: ...or damage to properties only Be sure not to do Be sure to follow the instruction Hydro Kit Installation Manual 3 ENGLISH 1 Safety Precautions n Installation Do not use a defective or underrated circuit breaker Use this appli ance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer sell er a qualified electri cian or an Authorized Service Center The...

Страница 4: ...gerant of this product is R410A The installation tool such as manifold gauge should be complied with R410A For installation always contact the dealer or an Authorized Service Center There is risk of fire elec tric shock explosion or injury Do not install the unit on a defective installa tion stand It may cause injury acci dent or damage to the unit Do not modify or extend the power cable There is ...

Страница 5: ...ion Do not store or use flammable gas or com bustibles near the unit There is risk of fire or failure of unit Do not use the unit in a tightly closed space for a long time It may cause damage to the unit When flammable gas leaks turn off the gas and open a window for ventilation before turn ing the unit on There is risk of explosion or fire If strange sounds or small or smoke comes from unit turn ...

Страница 6: ...uld result in per sonal injury and unit damage For installation always contact the dealer or an Authorized Service Center There is risk of fire elec tric shock explosion or injury When the unit is soaked flooded or sub merged contact an Authorized Service Center There is risk of fire or electric shock Be cautious that water could not be poured to the unit directly There is risk of fire elec tric s...

Страница 7: ...al purposes such as preserving foods works of art etc There is risk of damage or loss of property Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire elec tric shock or damage to the plastic parts of the unit Do not step on or put anything on the unit There is risk of personal injury and failure of unit Use a firm stool or lad der when cleaning or maintaining t...

Страница 8: ...letely 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 INSTALLATION MANUAL AIR CONDITIONER P NO MFL67086703 Original instruction ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH PORTUGUESE NEDERLANDS www lg com P NO MFL6721...

Страница 9: ... under Eurovent Heating condition water temperature 30 C 86 F 35 C 95 F at out door ambient temperature 7 C 44 F 6 C 42 F 2 Tested under Eurovent Cooling condition water temperature 23 C 73 F 18 C 64 F at out door ambient temperature 35 C 95 F 24 C 75 F Type Hydro Kit Model Unit Power Supply Ø V Hz Capacity Cooling kW kcal h Btu h Heating kW kcal h Btu h Net Weight kg lbs Noise Level dB 3 General ...

Страница 10: ...Solar Thermal System To generate auxiliary heating energy for water tank Thermostat To control the unit by air temperature Heating Only type 1 230 V or 1 24 V Cooling Heating type 1 230 V or 1 24 V AC with Mode selection switch 3way valve and actuator To control water flow for hot water heating or floor heating 3 wire SPDT Single Pole Double Throw type 1 230 V 2way valve and actuator To control wa...

Страница 11: ...here the unit is not affected by an electrical noise The place where there should not be any heat source or steam near the unit Installation Space The following values are the least space for installation If any service area is needed for service according to field circumstance obtain enough service space The unit of values is mm inch Unit mm inch 100 3 15 16 100 3 15 16 100 3 15 16 100 3 15 16 20...

Страница 12: ...s Thus use anti vibration materials cushion pad fully The base pad shall be more than 200 mm 7 7 8 inch Flat washer Anchor bolt Spring washer Nut Anti vibration material Concrete base Support 75 2 15 16 3 or more screw threads of the 2 bolts must be shown Unit mm inch 392 15 7 16 340 13 3 8 Drain pipe connection Hydro Kit does not use the drain pump Do not install in upward direction Install the d...

Страница 13: ...pipe cap to avoid dust entering When cutting or welding the pipe always be careful that inner section of the pipe should not be defective For example no weldments or no burrs are found inside the pipe Pipe fittings e g L shape elbow T shape tee diameter reducer etc should be tightened strongly to be free from water leakage Connected sections should be leakage proof treatment by applying tefron tap...

Страница 14: ...malfunction of Hydro Kit may occur For the strainer use one with 50 mesh or above with measurement diameter of 0 4mm or less Exclude other net Always install the strainer on the horizontal pipe When dirt trash rusted pieces get into the water pipe system it can cause problems to the product by corroding the metallic material 7 Install the air vent 5 at the top of the water pipe If the air vent is ...

Страница 15: ...r supply valve 6 and sup ply the water 7 When installing the water tank insert the water tank temperature sensor 7 to measure the tem perature of the water inside the tank For the water tank temperature sensor use the sensor supplied on the product When heating the floor measure the temperature by using the remote controller or remote tem perature sensor Separately sold 8 Use the water tank 9 with...

Страница 16: ...emble 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 Within left right 45 degrees Check if there is any leakage on the connecting part Clean the strainer periodically Once a year or more frequent Water In Strainer Side Front 45 ...

Страница 17: ...s generating clean hot water Near the sanitary water DHW tank there should be water supply and water drain for easy ac cess and maintenance PT 1 2 inch Process PT 1 2 inch female bolt Inside water tan Water tank outer wall Water Tank Temperature Sensor Sensor holder If hot water mode is used make sure to install sensor to water tank Make PT15A female bolt hole in the water tank and install sensor ...

Страница 18: ...ler to determine when the recirculation pump should turn on and turn off is required The operating duration time of the recirculation pump is calculated as follow Duration time minute k V R k 1 2 1 5 is recommended If distance between pump and tank is far then choose high number V Volume of sanitary water tank liter R Water flow rate of pump liter per minute which is determined by pump performance...

Страница 19: ...o reduce or extend of pipe s diameter Step 3 After Step 2 connect the pipe and solar thermal kit Step 4 Connect solar thermal sensor to CN_TH4 Red connector of the indoor unit PCB If the water tank sensor is connected disconnect the sensor from PCB first Solar Thermal System Field Supply Solar Collector Field Supply Water Tank Water Tank Sensor less than 5 meter Solar Thermal Sensor less than 5 me...

Страница 20: ...ly Without mixing tank Floor heating loop Fan coil unit Radiator M 2 Floor Heating only With mixing tank Floor heating loop Fan coil unit Radiator M WARNING At the installation site where Hydro Kit is combined with a mixing tank each water circulation pump one is installed between Hydro Kit and the mixing tank the other is installed between the mixing tank and indoor units FCU Radiator and so on s...

Страница 21: ...1 2 dichloroethane 3 0 μg l Epichlorohydrin 0 10 μg l Parameter Value Fluoride 1 5 mg l Lead 10 μg l Mercury 1 0 μg l Nickel 20 μg l Nitrate 50 mg l Nitrite 0 50 mg l Pesticides 0 10 μg l Pesticides Total 0 50 μg l Polycyclic aromatic hydrocarbons 0 10 μg l Selenium 10 μg l Tetrachloroethene and Trichloroethene 10 μg l Trihalomethanes Total 100 μg l Vinyl chloride 0 50 μg l 3 Floor Heating Hot wat...

Страница 22: ...eze 2 If a antifreeze is used pressure drop and capability degradation of the system can occur 3 If one of antifreezes is used corrosion can occur So please add corrosion inhibitor 4 Please check the concentration of the antifreeze periodically to keep same concentration 5 When the antifreeze is used for installation or operation take care to ensure that antifreeze must not be touched 6 Ensure to ...

Страница 23: ...erate a thick oxidized coating within the pipe to interfere with normal operation of valve and compressor etc Insulation Use rubber foamed insulation material EPDM NBR with high thermal resistance When installed in humid environment use thicker insulation material than usual Insert the insulation material within the prod uct as deep as possible h The thickness of the above insulation material is b...

Страница 24: ...t h capacity model ARNH10GK2A2 The pipe number of the connected gas pipe and liquid pipe must be same Flow water in the Hydro Kit when pipe searching process is performed Pipe searching process error may occur if the pipe tem perature does not increase It is recommended that Hydro Kit ARNH10GK2A2 model is connected to No 1 valve and No 2 valve No 1 2 Valve No 3 4 Valve Control No 3 4 Valve Control...

Страница 25: ...e connection may become loose by the vibration generated during the trans portation Make sure to check again and fasten them tightly If they are loose it may cause fire 4 Make sure to check power specification 5 Electrical capacity shall be sufficient 6 The initial voltage shall be maintained at 90 of the rated voltage on the name plate 7 The thickness of the power cable complies with the designat...

Страница 26: ... Power cables and communication lines shall not be tied together Classification types Cable cross section Power cable CV mm2 2 5 Communication cable VCTF SB mm2 1 0 1 5 WARNING Are all of the indoor units and outdoor units grounded If grounding is not properly done there is a risk of electric shock Grounding must be done by a qualified technician Consider the surrounding conditions surrounding tem...

Страница 27: ...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 After checking each part carefully install external parts respectively Connect the cable of each accessory to the terminal block of the control box in the Hydro Kit C...

Страница 28: ... into upper and right side please set up after removing remote controller cable guide groove h Remove guide groove with long nose Reclamation to the surface of the wall Upper part guide groove Right part guide groove 3 Please fix remote controller upper part into the setup board attached to the surface of the wall as the picture below and then con nect with setup board by pressing lower part Pleas...

Страница 29: ...connected Male plug ends Female plug ends Hydro Kit When installing the wired remote controller do not bury it in the wall It can cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct install...

Страница 30: ...antee the loss of entire water pressure and to supply the Hydro Kit with water Select a suitable relay for pump capacity when connecting the pump to the unit Connect the relay to the terminal block 11 and 12 of the control box Connect sensor housing to PCB CN TH4 connector red 11 12 L N Pump main Relay Pump Water tank thermistor Housing CN TH4 CAUTION Make sure to supply external power with the pu...

Страница 31: ...ernal thermal influence may be applied such as above heating radiator or open window 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 Please read thermostat manual carefully if the unit does not response quickly 3 Setting temperature range by thermostat can b...

Страница 32: ...temperature CAUTION Choosing Heating Cooling Thermostat Heating Cooling Thermostat must have Mode Selection feature to distinguish operation mode Heating Cooling Thermostat must be able to assign heating target temperature and cooling target temperature differently If above conditions are not kept the unit can not operation properly Heating Cooling Thermostat must send cooling or heating signal im...

Страница 33: ... go to step 6 Step 5 Find terminal block and connect wire as below After connecting go to step 6 WARNING 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 type ther mostat Never connect external electric loads such as valves fan ...

Страница 34: ...om Thermostat to PCB H Heating signal from Thermostat to PCB Step 6 Find terminal block and connect wire as below WARNING 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 type thermostat Never connect external electric loads suc...

Страница 35: ...NOT permitted when thermostat is installed Operating mode cooling heating weather dependent selection Time scheduling Operation On Off NOTICE 58 78 0 16 57 58 78 0 16 57 58 78 0 16 0 16 57 58 78 78 0 16 57 57 58 78 0 16 57 58 78 0 16 57 58 58 78 0 16 57 Sequence of thermostat operation How to set the heating temperature when thermostat is connected to the Hydro Kit How to set the cooling temperatu...

Страница 36: ...set the option code of the attached controller on the indoor unit In detail refer to installer setting mode Step 4 The Connection wire does not matter if you change the color of the wire because of non polar Fixing screws 60mm Fixing the Remote Sensor 2 1 CAUTION 1 Choose the place where the average temperature can be measured for the indoor unit operates 2 Avoid direct sunlight 3 Choose the place...

Страница 37: ...e Double Throw Three wires consist of Live for selecting Flow A Live 1 for selecting Flow B and Neutral for common 2 Flow A means water flow from the unit to sanitary water tank 3 Flow B means water flow from the unit to under floor water circuit How to Wire 3Way Valve Follow below procedures Step 1 Step 2 Step 1 Uncover front cover of the unit and open the control box Step 2 Find terminal block a...

Страница 38: ...eratures should be almost equivalent if thermal insulation of water pipe is well performed Noise or water pipe vibration while 3way valve operation Due to surging effect or cavitation effect noise or water pipe vibration can be occurred while 3way valve is operating In that case check followings Is water circuit both under floor water loop and sanitary water tank loop fully charged If not addition...

Страница 39: ...ype When electric power is NOT supplied the valve is closed When electric power is supplied the valve is open How to Wire 2Way 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 NO Live signal for Normal Open type from PCB to 2way valve NC Live signal for Normal Closed type from PCB...

Страница 40: ... Install Dry Contact Connect CN_DRY with Control Unit To apply power source through Dry Contact PCB Dry Contact Dry contact Controller CN CC DRY CONTACT PCB DRY CONTACT PCB INPUT AC 220V LG does not supply this section LG does not supply this section 4 4 3 3 2 2 1 1 2 2 1 1 RY1 RY2 CN_DRY N L Operation Display Error Check Display Dry contact Controller CN_DRY 4 3 2 4 3 2 1 1 2 2 1 1 L N AC 220V RY...

Страница 41: ... unit is operating if Hydro Kit is suddenly powered off a plate heat exchanger burst may happen dur ing oil return and defrosting cycle in cooling mode How to install Independent Power Module Step 1 Open the front panel of the control box Independent Power Module Step 2 Assemble the cover of independent power module fix it tightly with bolts and connect wires ...

Страница 42: ...ot be exposed to the outside otherwise it may leads to the malfunction of the independent power kit due to wire damage Wrong wiring also causes the malfunction of the independent power kit or damage to it Power should be supplied more than 20 minutes continuously in order to operate the inde pendent power kit correctly Otherwise the independent power kit can not fully close the EEV due to the lack...

Страница 43: ... Function Default 1 2 3 4 5 6 7 8 Group Control x Master Slave Installation Scene x x Floor heating only x Floor heating Hot water solar booster x Floor heating Hot water Hot water only Emergency operation x High temperature operation Low temperature operation Water pump control x Water pump controlled with Hydro Kit Water pump NOT controlled with Hydro Kit Antifreeze oper ation mode x Nomal opera...

Страница 44: ...e of Central controller and Group controller at the same time it is possible to connect stan dard 2series indoor units or later since Feb 2009 In case of Central controller setting the Central controller can control indoor units after setting only the address of master indoor unit Slave indoor unit will be operated like master indoor unit Slave indoor unit can not be individually controlled by Cen...

Страница 45: ...e setting of indoor units be set possible using a PCB Dip Switch h It can be the cause of malfuctions when there is no setting of master and slave Accessories for group control setting Accessories for group control setting Slave Master Master PZCWRCG3 Indoor unit 2 EA Wired remote controller PZCWRCG3 cable used for connection CAUTION Indoor unit Hydro Kit s group setting is possible which connecte...

Страница 46: ...ed two levels according to the seriousness of the problem Slight Trouble and Heavy trouble Slight Trouble Sensor trouble Heavy trouble Compressor cycle trouble Option Trouble a problem is found for option operation such as water tank heating In this trouble the troubled option is assumed as if it is not installed at the system Emergency operation level When the system is faced with trouble it stop...

Страница 47: ... 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 When sanitary water is not warming up while emergency operation please check whether the sani tary water sensor and related wiring are connected well or not Emergency operation is not au...

Страница 48: ...ler and any installation or change that is carried out by a non certificated person should be responsible for the results In this case free service cannot be provided 58 58 78 78 0 16 0 16 57 57 1 Function Code Value Press Function Setting button for 3 seconds to enter the installer setting mode When you enter the installer setting mode ini tially function code is displayed on the bottom of the LC...

Страница 49: ...Temp range Weather dependent operation 24 021 016 20 68 30 86 Upper Limit of setting range 16 60 19 66 Lower Limit of setting range Setting leaving water Temp Weather dependent operation 25 050 020 35 C 95 F 50 C 122 F Upper Limit of setting range 20 C 68 F 34 C 93 F Lower Limit of setting range Setting control parameter Sanitary water heating operation 29 003 000 00 01 Setting sanitary water heat...

Страница 50: ... Function Code 05 Setting Temperature Selection The unit can be operated according to air temperature or leaving water temperature The selection for setting temperature as air temperature or leaving water temperature is determined Note Air temperature as setting temperature is ONLY available when Remote Air Sensor Connec tion is enabled and Function Code 03 is set as 02 Function Code 06 Auto Dry C...

Страница 51: ...ng Mode Determine heating setting temperature range when air temperature is selected as setting temperature CAUTION Only available when remote air temperature sensor is connected Accessory PQRSTA0 should be installed Also Function Code 03 should be set properly Function Code 14 Setting Leaving Water Temperature in Heating Mode Determine heating setting temperature range when leaving water temperat...

Страница 52: ...e when the leaving water tem perature is below 10 C 50 F FCU Installation If FCU is used 2way valve should be installed and connected to the Main PCB assembly 1 If Value 2 is set as 00 but FCU or 2way valve is NOT installed the unit may not operate nor mally NOTICE Function Code 23 24 and 25 Setting Weather dependent operation Weather dependent operation is that the unit automatically adjusts targ...

Страница 53: ...at means heating priority is on sanitary water heating In this case the under floor can not be heated while sanitary water heating On the other hand if the Value 2 is set as 1 that means heating priority is on under floor heating sanitary tank can not be heated while under floor heating Sanitary water heating does not operate when it is disabled Enabling Disabling sanitary water heating to operate...

Страница 54: ...2E and 2F Changing thermal on off temperature Select Thermal on off Temperature gap Th On Th Off 0 0 5 0 5 1 6 4 2 2 4 3 1 1 Th On Th Off 0 0 5 0 5 1 6 4 2 4 2 3 1 1 Function code 32 Inlet Outlet water temperature in Cooling mode Th On Th Off 0 2 2 1 6 4 2 2 4 3 1 1 Function code 33 Sanitary Tank water temperature Function Code 33 Changing thermal on off temperature in Hot water Mode Select Therma...

Страница 55: ...sistance between the terminal block and ground is measured with DC mega tester DC 500V Never check insulation resistance for the connector of the control board Operation Test of Water Pipe Category Status Check point Flow Switch Error CH14 Check whether operation of water pipe is normal Check for the block inside water pipe Strainer cleaning valve locked valve malfunction air re maining etc Check ...

Страница 56: ...utdoor unit communi cation error No signal communication between indoor unit out door unit 06 Liquid side temperature sensor error Liquid side temperature sensor disconnection or short circuit 08 Water tank temperature sensor error Water tank temperature sensor disconnection or short circuit 09 Indoor unit EEPROM error Communication between the micro processor the EEPROM Error due to EEPROM damage...

Страница 57: ......

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