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LG THERMA V AHBW036H0, Installation Manual, Page: 2 / 69

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Air-to-Water Heat Pump

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
WATER PIPING AND WATER CIRCUIT CONNECTION ............................................................17
ELECTRICAL WIRING ................................................................................................................21
CONNECTING CABLES .............................................................................................................23
WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY ........................................27
INSTALLATION OF THE FINAL CHECK .....................................................................................28

5. ACCESSORIES INSTALLATION ................................................................................................29

INSTALLATION OF REMOTE CONTROLLER............................................................................29
THERMOSTAT.............................................................................................................................31
SANITARY WATER TANK AND SANITARY WATER TANK KIT..................................................35
DRY CONTACT ...........................................................................................................................38
REMOTE AIR SENSOR ..............................................................................................................39
3WAY VALVE ...............................................................................................................................40
AIR-VENT ....................................................................................................................................41

6. SYSTEM SET-UP ........................................................................................................................42

DIP SWITCH SETTING ...............................................................................................................42
INSTALLER SETTING.................................................................................................................46

7. CHECK POINTS, MAINTENANCE AND TROUBLESHOOTING ...............................................60

CHECK LIST BEFORE STARTING OPERATION .......................................................................60
MAINTENANCE...........................................................................................................................61
TEST RUN...................................................................................................................................61
VACUUM & CHARGE OF REFRIGERANT .................................................................................63
TROUBLESHOOTING.................................................................................................................66
MODEL DESIGNATION...............................................................................................................68
AIRBORNE NOISE EMISSION ...................................................................................................68

Summary of Contents for THERMA V AHBW036H0

Page 1: ...rk 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 P NO MFL68026604 TYPE Air to Water Heat Pump Original instruction ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ΕΛΛΗΝΙΚΆ ČEŠTINA NEDERLANDS POLSKI LIMBA ROMÂNĂ ...

Page 2: ...R CIRCUIT CONNECTION 17 ELECTRICAL WIRING 21 CONNECTING CABLES 23 WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY 27 INSTALLATION OF THE FINAL CHECK 28 5 ACCESSORIES INSTALLATION 29 INSTALLATION OF REMOTE CONTROLLER 29 THERMOSTAT 31 SANITARY WATER TANK AND SANITARY WATER TANK KIT 35 DRY CONTACT 38 REMOTE AIR SENSOR 39 3WAY VALVE 40 AIR VENT 41 6 SYSTEM SET UP 42 DIP SWITCH SETTING 42 INSTALLER ...

Page 3: ... 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 The seriousness is classified by the following indications n Meanings of symbols used in this manual are as shown below WARNING CAUTION This symbol indicates the possibility of death or serious injury This symbol indicates t...

Page 4: ...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 turning the unit on There is risk of explosion or fire Do not touch leaked refrigerant directly There is risk of frostbite Do not touch any electric part with wet hands you should be power off before touching electric ...

Page 5: ...r with a stove etc There is risk of fire or electric shock Turn the main power off when cleaning or maintaining the unit There is risk of electric shock Take care to ensure that nobody could step on or fall onto the unit This could result in personal injury and unit damage For installation always contact the dealer or an Authorized Service Center There is risk of fire electric shock explosion or i...

Page 6: ...it Avoid personal injury n Operation Do not use the unit for special 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 electric 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 o...

Page 7: ...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 Pmup For High Temperature P NO MFL67212807 OWNER S MANUAL AIR CONDITIONER Please read this manual carefully before operating yo...

Page 8: ...ted information tested under Eurovent Heating condition inlet Water temperature 30 C 35 C at outdoor ambient temperature 7 C DB 6 C WB Unit Capacity Power Source Unit Chassis Heating kW Cooling kW AHBW036H0 3 0 220 240 V 50 Hz U4 Components Description No Name Remarks 1 Entering water pipe PT 25 4mm Female type 2 Leaving water pipe PT 25 4mm Female type 3 Control box PCB and terminal blocks 4 Plat...

Page 9: ...ow for hot water heating or floor heating 3 wire SPDT Single Pole Double Throw type 230 V Solar Heating System To generate auxillary heating energy for water tank Item Purpose Model Sanitary water tank kit To operate with sanitary water tank PHLTB Remote air sensor To control by air temperature PQRSTA0 Dry contact To receive on off external signal PQDSA Sanitary water tank To generate and store ho...

Page 10: ...forming defrost operation Install the unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place with a high humidity in winter near beach coast lake etc Ex Rooftop where sunshine always shines Performance of heating will be reduced and preheat time of the unit may be lengthened in case of installing the unit in winter at following location Shade posi...

Page 11: ...a sunroof is built over the unit to prevent direct sunlight or rain exposure make sure that heat radiation from the heat exchanger is not restricted Ensure that the spaces indicated by arrows around front back and side of the unit Do not place animals and plants in the path of the warm air Take the weight of the unit into account and select a place where noise and vibration are minimum Select a pl...

Page 12: ...d close to the seaside direct exposure to the sea wind should be avoided Install the unit on the opposite side of the sea wind direction It should be strong enough like concrete to prevent the sea wind from the sea The height and width should be more than 150 of the unit It should be keep more than 700 mm of space between unit and the windbreak for easy air flow 2 In case to install the unit on th...

Page 13: ...oncrete base 100 950 390 360 614 165 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 It is best to screw in the foundation bolts until their length are 20mm fr...

Page 14: ...ng heat emitters for heating Under floor loop Fan coil unit and Radiator R A T Outdoor Indoor Floor heating loop Fan coil unit Radiator Room thermostat field supply By pass valve field supply Strainer Field supply Mesh 1mm X 1mm Remote controller R Air vent Shut off valve field supply Pressure gage field supply Relife valve field supply A Installation Scenes Note Room thermostat Type of thermostat...

Page 15: ...ermostat field supply By pass valve field supply Strainer Field supply Mesh 1mm X 1mm Remote controller R Air vent Shut off valve field supply Pressure gage field supply Relife valve field supply A Note Sanitary water tank It should be equipped with internal electric heater to generate sufficient heat energy in very cold season 3way valve Type of 3way valve and specification should be complied wit...

Page 16: ...ure gage field supply Room thermostat field supply By pass valve field supply Strainer Field supply Mesh 1mm X 1mm Remote controller R Air vent Shut off valve field supply Pump Field supply Relife valve field supply A Note Sanitary water tank It should have additional indirect heat exchanger to utilize heat energy by solar thermal system Pump Maximum power consumption of pump should be less than 0...

Page 17: ... considered While inserting or putting water pipes close the end of the pipe with 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 Drain piping should be provided in case of water discharge by the operation of the safety valve This situation can be...

Page 18: ...eze at winter season Must be insulation at exterior water pipe between product and building Shutoff Valve Shut Off Valve is used to connect water pipe to unit Tighten the flare nut with two spanner check the leak to the connection When the water pipes are connected It must be tightened the nut with two wrench Otherwise pipes can be deformed Water In Water Out Union WARNING ...

Page 19: ...off range Performance NOTICE Δp v variable Tolerances of each curve according to EN 1151 1 2006 0 0 5 1 0 1 5 2 0 2 5 3 0 0 0 2 0 4 0 6 0 8 10 0 2 4 6 8 0 1 2 3 4 5 6 0 10 20 30 40 50 60 0 0 5 1 0 1 5 2 0 2 5 3 0 0 10 20 30 40 p kPa H m P1 W Q m h Q l s Q Igpm Q m h max Wilo Yonos PARA RS 15 6 20 6 25 6 30 6 1 230 V Rp Rp Rp 1 Rp 1 2m 3m 4m 5m 6m Δ p v m ax Constant speed I II III Tolerances of ea...

Page 20: ...ant to clean hydraulic pipes to remove sludge and scale Installing sludge strainer in the water loop is very important to prevent performance degrade Chemical treatment to prevent rust should be performed by installer 1 Use only one of the above antifreeze 2 If a antifreeze is used pressure drop and capability degradation of the system can be occurred 3 If one of antifreezes is used corrosion can ...

Page 21: ...y or electric work deficiency it may cause an electric shock or fire CAUTION Be sure to correct the unit to earth Do not connect earth line to any gas pipe liquid pipe lightening rod or telephone earth line If earth is incomplete it may cause an electric shock CAUTION This product have reversed phase protection detector that only works when the power is turned on If there exists black out or the p...

Page 22: ...terminal block Should be used round pressure terminals when connecting the ground at control box panel 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 If do not use any materials when connecting cables to terminal block follow the instructions below Do not connect wiring of different thicknesses to th...

Page 23: ... capacity of fuse also selected according to the power consumption The main electricity supply should be dedicated line Sharing main electricity supply with other devices such as washing machine or vacuum cleaner is not permitted Before starting wiring job the main electricity supply should be turned off until wiring is completed When adjusting or changing wiring the main electricity supply should...

Page 24: ... are porperty used in knock out holes after connecting main power Step 2 Connect power cable to main power terminal See below figure for detailed information When connecting earth cable the diameter of cable should be refer to the below table The earth cable is connected to the Control box Terminal block where earth symbol is marked Step 3 Use cable clamps or cord clamps to prevent unintended move...

Page 25: ... switching between using solar thermal heating and skipping solar thermal heating turn on or off sanitary water tank heater 3WAY VALVE B WATER PUMP B WATER TANK HEATER 3WAY VALVE A 1 L BR BK BL BR BL BR BR BK BL BL 2 L1 3 N 4 L 5 N 6 L 7 N 8 L 9 L1 10 N 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 ...

Page 26: ...r source such as phase voltage frequency etc 5 Confirm that electrical capacity is sufficient 6 Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Provide an ELB electric leakage ...

Page 27: ...ach of unit separately from the power supply Wiring of main power supply and equipment capacity Follow ordinance of your governmental organization for technical standard related to electrical equipment wiring regulations and guidance of each electric power company Make sure to use specified wires for connections so that no external force is imparted to terminal connections If connections are not f...

Page 28: ...rror CH14 Refer to Chapter 4 Water Piping and Water Circuit Connection 4 Transmission line and power source wiring Check if Transmission line and power source wiring are separated from each other If it is not electronic noise may occur from the power source 5 The power cord specifications Check the power cord specifications Refer to Chapter 4 Connecting Cables 6 3Way Valve Water should flow from W...

Page 29: ...n Proper tools should be chosen for installation Never do installation with wet hands 2 2 1 3 3 Wire guide grooves 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...

Page 30: ...ents when separating 4 Please connect Main PCB and remote controller using connection cable 5 Please use extension cable if the distance between wired remote controller and unit is more than 10m Connecting cable Please check if connector is normally connected PCB assembly 1 of unit side ZDWHU ZDWHU WHPS WHPS RSHU RSHU KHDWLQJ KHDWLQJ PRGH PRGH ZDWHU ZDWHU WHPS WHPS RSHU RSHU KHDWLQJ KHDWLQJ PRGH P...

Page 31: ...fluence may be applied such as above heating radiator or open window 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 Please read thermostat manual carefully if the unit does not response quickly 3 Setting temperature range by thermostat can be different with that ...

Page 32: ...er etc is included in the thermostat and electric power supply is required 3 Thermostat generates Heating ON or Heating OFF signal according to user s heating target temperature Choosing heating thermostat Heating thermostat must have Mode Selection feature to distinguish operation mode Heating thermostat must be able to assign heating target temperature If above conditions are not kept the unit c...

Page 33: ... as valves fan coil units etc If connected Main PCB can be seriously damaged L Live signal from PCB to thermostat N Neutral signal from PCB to thermostat H Heating signal from thermostat to PCB Thermostat L N H THERMOSTAT Default 230 V AC 11 L BR 12 N BL 13 L1 BR 14 L2 BK L Live signal from PCB to thermostat N Neutral signal from PCB to thermostat H Heating signal from thermostat to PCB Step 5 Fin...

Page 34: ...lled SET TEMP button VIEW TEMP button Temperature adjusting button Sanitary water heating Enable Disable Adjusted temperature is only used to control on off condition The unit does not turn on off according to the setting temperature at the remote controller It turns on off according to the thermostat signal Following features are NOT permitted when thermostat is installed Operating mode heating w...

Page 35: ...ld be located at the flat place Water quality should be complied with EN 98 83 EC directives As this water tank is sanitary water tank indirect heat exchange do not use anti water freezing treatment like ethylene grycol It is highly recommend to wash out inside of the sanitary water tank after installation It ensures generating clean hot water Near the sanitary water tank there should be water sup...

Page 36: ... 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 Therefore external time scheduler 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 i...

Page 37: ...sanitary tank heater It is located inside of the tank Refer to the next page for more information Step 5 Find sanitary water tank sensor Plug it to CN_TH4 Red Connector of the Main PCB The sensor should be mounted correctly to the sensor hole of sanitary water tank Like below figure 1 Step 6 Connect the Main PCB to terminal block with wire Part 4 like figure 3 Sensor mounting Insert sensor into se...

Page 38: ... to 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 LG does not supply this section LG does not supply this section LG does not supply this wire Operation Display Error Check Display Dry contact Controller Operation Display Error Check Display CN_DRY 4 3 2 4 3 2 1 1 2 2 1 1 L...

Page 39: ...rately set the option code of the attached controller on the 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 1 Choose the place where the average temperature can be measured for the unit operates 2 Avoid direct sunlight 3 Choose the place where the cool...

Page 40: ...following 3way valve SPDT Single Pole Double Throw Three wires consist of Live1 for selecting Flow A Live 2 for selecting Flow B and Neutral for common No of terminal block How to wire 3way valve Follow below procedures Step 1 Step 2 Step 1 Uncover front cover of the unit Step 2 Find terminal block and connect wire as below W Live signal Water tank heating from PCB to 3way valve U Live signal Unde...

Page 41: ...s selected To verify the flow direction check temperature at the water outlet of the unit and water inlet of sanitary water tank If correctly wired these temperatures 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...

Page 42: ...ectly If not configured correctly improper operation or degrade of performance can be expected DIP Switch Setting Turn off electric power supply before setting DIP switch Whenever adjusting DIP switch turn off electric power supply to avoid electric shock General information Main PCB assembly Indoor 8 7 6 5 4 3 2 1 OFF ON CAUTION 6 System Set Up ...

Page 43: ...Sanitary water tank Solar thermal system is installed X Emergency operation Level High temperature cycle X Low temperature cycle External water pump installation information External water pump is NOT installed X External water pump is installed Reserved Please keep default setting Not use unit electric heater X Thermostat installation information Thermostat is NOT installed X Thermostat is instal...

Page 44: ...d two levels according to the seriousness of the problem Minor Trouble and Major trouble Minor trouble Sensor trouble Major 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 system met trouble it stops operation and w...

Page 45: ... with minor or major trouble at the same time the system puts higher priority to minor or major trouble and operates as if minor or major 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 sanitary water sensor and related wiring are connected well or n...

Page 46: ...er 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 initially function code is displayed on the bottom of the LCD ...

Page 47: ...ault Range 03 Function Remote air sensor connection Description Connection information about remote air sensor Value 1 Note 01 Remote air sensor is not connected and not used 02 Remote air sensor is connected and used Default 1 Range 01 02 Value 2 Note Default Range 04 Function Celsius Fahrenheit switching Description Display temperature in Celsius or Fahrenheit Value 1 Note 01 Celsius 02 Fahrenhe...

Page 48: ...tion is enabled and Function code 03 is set as 02 Default 2 Range 01 02 Value 2 Note Default Range 06 Function Auto dry contact Description Setting dry contact auto start option If thermostat is used value should be changed from 2 to 1 Value 1 Note 01 Auto start off 02 Auto start on Default 2 Range 01 02 Value 2 Note Default Range 07 Function Address setting Description Assigning address when cent...

Page 49: ...k leaving water temperature for Sanitary water heating Description Adjusting range of Setting Sanitary Tank Leaving Water Temperature in sanitary water heating mode Value 1 Note Upper Limit of setting range Default 50 C Range 50 80 C Value 2 Note Lower Limit of setting range Default 40 C Range 30 40 C 18 Function Screed drying mode Description After installing water pipes for under floor heating u...

Page 50: ...l u a f e D C 5 0 0 2 e g n a R e g n a r g n i t t e s f o t i m i L r e w o L e t o N 2 e u l a V C 5 1 t l u a f e D C 0 2 0 1 e g n a R 24 Function Setting indoor air temperature range for weather dependent operation Description Setting indoor Max Min temperature for weather dependent operation e g n a r g n i t t e s f o t i m i l r e p p U e t o N 1 e u l a V C 1 2 t l u a f e D C 0 3 0 2 e ...

Page 51: ...ote Temperature gap from target sanitary water temperature This value is required to frequent ON and OFF of water tank heater Default 03 C Range 02 04 C Value 2 Note Determining heating demand priority between sanitary water tank heating and under floor heating Default 00 Range 00 01 Only available when Sanitary Water Tank is installed the disinfection mode will not be operated although Value 1 of...

Page 52: ...alue 3 Note Default Range 20 95 min step 5 min 20 min This time duration defines how long time sanitary tank heater will not be turned on in sanitary water heating operation This time duration defines how long time sanitary tank heating can be continued 2E 2F Function Changing thermal on off room air temp Description Select Thermal on off Temperature gap Value 1 Note 0 1 2 3 0 5 C 4 C 2 C 1 C 1 5 ...

Page 53: ...yed in Celsius or Fahrenheit 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 connection is enabled and Function Code 03 is set as 02 ...

Page 54: ...tion Code 15 Setting sanitary tank leaving water temperature Determine heating setting temperature range of water tank leaving water Only available when sanitary water tank feature is installed Sanitary water tank and sanitary water tank kit should be installed DIP switch No 2 and 3 should be set properly Function Code 18 Screed drying mode After installing water pipes for under floor heating user...

Page 55: ...Press left right button to move to screed drying setting part 4Press up down button to adjust 01 or 00 00 Not Used 01 Used 5If you finish the setting press OK CLEAR button 6Press exit button to exit or system will automatically release without any input 25 seconds 7During the screed drying mode dry is displayed Left days for completing the screed drying mode are displayed Left days ...

Page 56: ...n Code 23 range of outdoor air temperature Value 1 and Value 2 of Function Code 24 range of auto adjustable target room air temperature Value 1 and Value 2 of Function Code 25 range of auto adjustable target leaving water temperature Note Weather dependent operation is applied for heating mode only Value 1 of Function Code 23 Auto Adjustable Target Temperature Outdoor air temperature Temperature p...

Page 57: ...on mode Vales of Function Code 26 If Value 1 of Function Code 26 is set as 00 that is disable disinfection mode Value 2 and Value 3 is not used When Value 1 is set as 01 that is enable disinfection mode Value 2 is displayed at the position of Value 1 and Value 3 is displayed at the position of Value 2 It is due to limited width of the remote controller display Sanitary water heating should be enab...

Page 58: ... the water temperature is below 70 C Example If Value 2 is set as 0 that means heating priority is on sanitary water heating sanitary water is heated by AWHP compressor cycle and water heater 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 is ONLY heated by w...

Page 59: ...ry tank heating stop time of sanitary tank heating and delay time of sanitary tank heater operating Value 1 of Function Code 2B This time duration defines how long time sanitary tank heating can be continued Value 2 of Function Code 2B This time duration defines how long time sanitary tank heating can be stopped It is also regarded as time gap between sanitary tank heating cycle Value 3 of Functio...

Page 60: ... Wiring should be following the wiring diagram supplied with the unit Install ELB earth leakage breaker with 30 mA Earth should be connected Do not earth to gas or city water pipe metallic section of a building surge absorber etc Use dedicated power line Connections on the terminal block inside of the unit should be tightened After water charging the pressure gage in front of the unit should indic...

Page 61: ...k if water is flood out through the drain hose After checking close the safety valve Look and inspect if there is loosen or defected connection on the terminal block Test Run 1 Check to see whether there is any refrigerant leakage and check whether the power or transmission cable is connected properly 2 Confirm that 500 V megger shows 2 0 MΩ or more between power supply terminal block and ground D...

Page 62: ... are completely connected Yes No Yes No Is hot water discharged Yes No Is there any temperature difference between intake and discharged water No Yes Normal Check the load In Out Temp Check pipe length and amount of refrigerant Check for abnormal sound in Refer to Troubleshooting Guide outdoor unit comp Fan others Test run flow chart Check Points Maintenance and Troubleshooting 62 Air to Water Hea...

Page 63: ...ult 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 Vacuum pump 0 5 1HP Lo Hi Manifold valve Pressure gauge Open Close SVC Port Manifold gauge Vacuum Charge of Refrigerant ...

Page 64: ...essed in Torr micron mmHg and Pascal Pa The units correlate as follows Unit Standard atmospheric pressure Perfect vacuum Gauge Pressure Pa 0 1 033 Absolute Pressure Pa 1 033 0 Torr Torr 760 0 Micron Micron 760000 0 mmHg mmHg 0 760 Pa Pa 1013 33 0 2 Charge of refrigerant You should be charged after vacuum You can see amount of refrigerant at quality label SVC Port Manifold gauge Refrigerant cylinde...

Page 65: ...Check Points Maintenance and Troubleshooting Installation Manual 65 ENGLISH Refrigerant cylinder Refrigerant cylinder z jGw 3 Location of SVC port ...

Page 66: ... Check if strainer gathers too much particles If so strainer should be cleaned Check if internal water pump speed is NOT set as High It should be set as High Check if pressure gage indicates above 30 kPa Check if water pipe is getting closed due to stacked particles or lime If water inlet temperature is above 55 C the unit does not operated for the sake of system protection If water inlet temperat...

Page 67: ...ontroller and unit Incorrect connection between sensor and Main PCB Main PCB fault Sensor fault Wire connection between remote controller and Main PCB should be tight Output voltage of PCB should be 12 V DC 5 Bad communication between Main PCB and Inverter Main PCB of the unit The connector for transmission is disconnected The connecting wires are misconnected The communication line is broken Inve...

Page 68: ...ary 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 Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sour...

Page 69: ...esentative 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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