LG GHP SUPER Installation Manual

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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.your set and retain it for future reference.

Model : GPUW***BSS

GP*W***B6*

GP*W***B2*

P/NO : MFL67737304

www.lg.com

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Summary of Contents for LG GHP SUPER

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.your set and retain it for future reference. Model : GPUW***BSS GP*W***B6* GP*W***B2* www.lg.com P/NO : MFL67737304...
Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: •...
Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product WARNING It can result in serious injury or death when the directions are ignored CAUTION It can result in minor injury or product damage when the directions are ignored WARNING...
Page 4 IMPORTANT SAFETY INSTRUCTIONS • Always use the correctly rated breaker or fuse. - Use of overrated breaker or fuse, or metal copper wires may cause fire or failure of the air conditioner. • Prepare for strong wind or earthquake and install the unit fixed in the ground at the specified place.
Page 5 IMPORTANT SAFETY INSTRUCTIONS Operation • Do not extend or modify a power cord on your own. - It may cause fire or electric shock. • Use a dedicated power cord. - It may cause fire or electric shock. • Keep the air conditioner (control panel) from getting wet. Do not wash the air conditioner with water.
Page 6 IMPORTANT SAFETY INSTRUCTIONS • Do not install the product where it is exposed to sea wind (salt spray) directly. Build a fence around the unit, if necessary. - Corrosion caused by the sea wind (salt spray) may result a product malfunction or inefficient operation.
Page 7 IMPORTANT SAFETY INSTRUCTIONS Precautions before a test run • Turn on the main power at least 5 hours before starting operation in case of low outdoor tem- perature. - Starting operation immediately after turning on the main power many result in severe dam- age to internal parts.
Page 8: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING LEAK DETECTION ENERGY PIPE INSULATION IMPORTANT SAFETY VACUUM AND INSTRUCTIONS REFRIGERANT CHARGE COMBINATION OF ELECTRICAL WIRING OUTDOOR UNIT ADDITIONAL ACCESSORIES FUNCTIONS INSTALLATION SELF-DIAGNOSIS PROCESS FUNCTION SELECTION OF REGULAR INSTALLATION SITE MAINTENANCE OUTDOOR UNIT INSTALLATION REFRIGERANT PIPING...
Page 9: Combination Of Outdoor Unit
COMBINATION OF OUTDOOR UNIT COMBINATION OF OUTDOOR UNIT GHP Model Chassis Name Capacity [kW (btu/h)] Chassis Combinations GPUW160B2C/B6C/B6S 45 (153 600) GPUW200B2C/B6C/B6S 56 (191 100) GPUW250B2C/B6C/B6S/BSS 71 (242 300) GP-W320B2C/B6C 90 (307 100) GP-W360B2C/B6C 101 (344 600) GP-W400B2C/B6C 112 (382 100) GP-W450B2C/B6C 127 (433 300) GP-W500B2C/B6C...
Page 10 COMBINATION OF OUTDOOR UNIT Precautions to take when installing in a series CAUTION • When an indoor unit is connected to more than 100% of outdoor unit capacity, the cooling and heating performance of the indoor unit running may be reduced. •...
Page 11: Accessories
ACCESSORIES ACCESSORIES Separately purchased accessories The flow distribution(branch) as described below should be purchased separately for installation. The Y-branch flow distribution joint pipes to connect the outdoor and indoor units [unit:mm] Models Gas pipe Liquid pipe I.D12.7 I.D6.35 I.D12.7 I.D.6.35 I.D9.52 I.D9.52 I.D15.88...
Page 12 ACCESSORIES The header flow distribution joint pipes to connect the outdoor and indoor units [unit:mm] Models Gas pipe Liquid pipe ID12.7 ID6.35 ID6.35 4 branch ID12.7 ID9.52 ID15.88 ID9.52 ARBL054 ID15.88 ID12.7 ID9.52 ID15.88 ID19.05 ID6.35 ID12.7 7 branch ID12.7 ID9.52 ID15.88 120 150...
Page 13: Installation Process
INSTALLATION PROCESS INSTALLATION PROCESS Selection of installation site Schematic Diagram for refrigerant piping, power wiring, control, Preparation of contract drawings drain piping Use concrete pad Outside unit foundation work Provide sufﬁcient vibration-prooﬁng device Make sure airﬂow is sufﬁcient Installation of outside unit Beware of downward sloping of exhaust drain pipes.
Page 14: Selection Of Installation Site
SELECTION OF INSTALLATION SITE SELECTION OF INSTALLATION SITE Considerations when selecting an outdoor unit installation site • You need to select adequate installation location considering the following conditions, and make sure to acquire the consent of the user. • A place where exhaust gas does not flow back into a building or does not remain •...
Page 15 SELECTION OF INSTALLATION SITE Seaside Installation Instructions The materials of windbreak, such as concrete, should be strong enough to protect the out- door unit from the sea wind. The height and CAUTION width should be more than 150% of the size of outdoor unit.
Page 16 SELECTION OF INSTALLATION SITE Product Damage Installation Space During the installation of the unit, secure the minimum space considering service, inlet, and out- let as shown in the figures below. More than More than More than More than Control panel More than More than...
Page 17: Outdoor Unit Installation
OUTDOOR UNIT INSTALLATION OUTDOOR UNIT INSTALLATION Outdoor Unit Transportation • Lift the unit by using a crane rope to the carrying hole in the bottom base of the outdoor unit. • Avoid scratches or distortion on the external panel with protective support when suspending. •...
Page 18 OUTDOOR UNIT INSTALLATION Foundation Installation CAUTION • Make sure to level a concrete foundation and to have good drainage. • When installing the outdoor unit, always use a dedicated anchor bolts. • Make sure to use anti-vibration materials (cushion pad) so that the bottom surface of the outdoor unit can get the evenly distributed weight.
Page 19 OUTDOOR UNIT INSTALLATION Precautions to take when installing the anti-vibration stand When installing the anti-vibration stand, inspect the following: • The nuts #3 and #4 are fixed onto the side of the anti-vibration stand. • There is an appropriate distance (10 mm) from the bolt #1 and nut #2 to the ODU, as seen in the picture on the left.
Page 20 OUTDOOR UNIT INSTALLATION Outdoor Unit Drainage Piping WARNING • When connecting the rubber drain hose of the outdoor unit to the pipe for drainage, make sure to lay pipes exposed(released) to the air. If the exhaust gas flows backward inside a building, it causes a carbon dioxide poisoning.
Page 21 OUTDOOR UNIT INSTALLATION Fuel Gas Piping Install the fuel gas pipes of the outdoor unit as pictured below. Pressure purge tap (connecting to a pressure gauge) Access for fuel gas Shutoff valve (R3/4 male bolt) Strainer WARNING Only licensed installers and service technicians should perform the fuel gas piping. Improper installation causes fire and explosion.
Page 22 OUTDOOR UNIT INSTALLATION Outline of the piping plan System Limitations Item Range Capacity ratio of indoor unit to outdoor unit 50 ~ 130 % Minimum capacity of accessible indoor unit 2.3 kW 25units(45 kW) / 31units(56 kW) / 39units (71 kW) / 50units(90 kW) Maximum number of accessible indoor unit (by mode) / 56units(101 kW) / 62units (112 kW)
Page 23 OUTDOOR UNIT INSTALLATION Y/Header Method L170m (Equivalent Length 200m) l 40m (Conditional 90m) Header Method L170m (Equivalent Length 200m)
Page 24 OUTDOOR UNIT INSTALLATION Item Symbol Contents The actual length (m) 7≤L≤170 (Equivalent Allow the pipe length length 200) Allow the The maximum of pipe length ≤ 40 ( ≤ 90*) pipe length after first branch ≤ 30 a, b, c,d, e Length of pipe from each branch ≤...
Page 25: Refrigerant Piping
REFRIGERANT PIPING REFRIGERANT PIPING To meet the below requirements to make 40m above~90m or under of pipe length after the first branch. Requirements Examples The diameter of the pipes Ø6.35→ Ø9.52, Ø9.52→ Ø12.7, between the first branch and the Ø12.7→ Ø15.88, Ø15.88→ Ø19.05, last branch should be one size big- 40 m <...
Page 26 REFRIGERANT PIPING • Refrigerant pipe diameter from outdoor unit to first branch. (A) • Refrigerant pipe diameter from outdoor unit to outdoor unit (E) When pipe length is 90m or Outdoor unit Total Standard Pipe Diameter more from ODU to the farthest IDU capacity [kW (btu/h)] Gas pipe [mm(inch)] Liquid pipe [mm(inch)] Gas pipe [mm(inch)] Liquid pipe [mm(inch)]...
Page 27 REFRIGERANT PIPING Refrigerant Piping Work for Series Installation Slave Master First Branch h Selecting the Diameters of A and E A: Piping from the indoor unit to the first branch. The diameter that can handle the capacity of the master and slave combined. E: The diameter that can handle the capacity of the slave Permissible difference of elevation for outdoor units (H1) Less than or equal to 0.5 m...
Page 28 REFRIGERANT PIPING Piping Work Hold the cooper tube firmly in a bar (or die) as indicated dimension in the table above. Main cause of gas leaks is a bad (poor) flaring Handle work. Perform the flaring work properly in the following instructions.
Page 29 REFRIGERANT PIPING Insulation Fastening band (accessory) - Use the heat insulation material which has an excellent heat-resistance (over 120C) for the refrigerant piping. - If installing the unit in a high humid area, use Refrigerant piping Indoor a thicker insulation material than standard. unit Thermal insulator h Contact the company for more details.
Page 30 REFRIGERANT PIPING Note 3) General location: When the pipe passes indoors where the indoor unit is not operated - Hall way etc. (Dormitory, school, office-tel) Note 4) Negative condition: When below conditions 1 and 2 are met. When the pipe passes indoors where the indoor unit is not operated When the humidity is high, regionally, and there is no air flow in the pipe passing area - When installing the outside unit within the outside pipe tray or at a location where it is ok to have freezes, apply 13t.
Page 31 REFRIGERANT PIPING Precautions on pipe connection/valve operation Piping is connecting the end of a pipe to a branching pipe. The refrigerant pipe of the outdoor unit is divided at the end to connect to each indoor unit. Flare connection for the indoor unit piping, and welding connection for the outdoor unit piping and branching is used.
Page 32 • Always use the branch piping set developed unit is completely closed (the factor default (invented) by LG. setting). • If the diameters of the branch piping of the • Do not open the service valve until all refriger-...
Page 33: Pipe Connections Between Indoor/Outdoor Units
PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS Plumbing materials and storage methods - Pipe must be able to obtain the specified thickness and should be used with low impurities. - Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound. - Should not be mixed with contaminations such as dust, moisture.
Page 34 PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS Nitrogen substitution method Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor.
Page 35 PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS Preparation Work for Outdoor Unit Remove leakage prevention cap - Remove the leakage prevention cap attached to the outdoor unit service valve before piping work. - Proceed the leakage prevention cap removal as follows. 1. Verify whether the liquid/gas pipes are locked. 2.
Page 36 PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS Branch Installation Method <Horizontal installation> Viewed from point B Y branch Horizontal plane • Make sure that the two outlet pipes of Y branch are attached horizontally. (see the diagram below) (×) ±15° • Horizontal installation is recommended for Y branch.
Page 37 PIPE CONNECTIONS BETWEEN INDOOR/OUTDOOR UNITS Distribution Method (Branch Method) - The case where only branch pipes are connected to one another - Vertical Distribution h Be sure that the branch pipes are attached vertically.
Page 38: Leak Detection
LEAK DETECTION LEAK DETECTION Leak detection should be made by pressurizing nitrogen gas to 3.8 MPa(38.7 kgf/cm ). Refer to the diagram as follows. (Make a detection test with the service valve closed. Be sure to pressur- ize the liquid pipe and the gas pipe.) The test result can be judged good if the pressure has not been reduced for 24 hours after the nitrogen gas pressurization.
Page 39: Pipe Insulation
PIPE INSULATION PIPE INSULATION Refrigerant Pipe Insulation For the refrigerant pipe insulation, cover the liquid pipe and the gas pipe with a rubber insulating material thick enough to completely fill the gap between the insulator and the pipe. Insufficient insulation may cause drip of condensate water. Be extra care to the ceiling insulation. Ⓐ...
Page 40 PIPE INSULATION Insulation of the part where Insulation of Branch Piping pipes penetrate walls and others Y Branch Insulation When filling a gap with mortar, cover the pen- etrating part with steel plate to prevent the Liquid pipe Tape insulation material from being caved in. For (locally Insulation material the bottom part, use incombustible materials...
Page 41: Vacuum And Refrigerant Charge
VACUUM AND REFRIGERANT CHARGE How to Set Vacuum Mode VACUUM AND REFRIG- ERANT CHARGE Turn on the #5 DIP switch on the outdoor unit Vacuum Press the ‘▶’ or ‘◀’ button to display "SVC" Vacuum drying should be made from the serv- on 7-segment, then press the ‘●’...
Page 42 VACUUM AND REFRIGERANT CHARGE Refrigerant Charge Ⓐ Manifold gauge Ⓑ Low pressure side handle Ⓒ High pressure side handle Ⓓ Refrigerant Gas pipe Liquid pipe • Add exact amount of refrigerant calculated by the combination of the installation pipe diameter length and the indoor unit. •...
Page 43 VACUUM AND REFRIGERANT CHARGE The Additional Amount of Refrigerant Charge The calculation of the additional charge should take into account the length of pipe and correction factor (CF) value of indoor unit. Additional amount of Total liquid pipe(m) : Ø25.4 mm x 0.480(kg/m) refrigerant charge (kg) Total liquid pipe(m) : Ø22.2 mm...
Page 44: Electrical Wiring
ELECTRICAL WIRING ELECTRICAL WIRING Precaution Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. WARNING • Only licensed electricians should do the electrical work using special circuits in accor- dance with regulations and this installation manual.
Page 45 ELECTRICAL WIRING Control Box and Connecting Position of Wiring - Remove all of the screws from the right front panel, and remove the panel by pulling it forward. - Connect the transmission cable between the main and the sub outdoor unit through the termi- nal block.
Page 46 ELECTRICAL WIRING Transmission and Power Cables Transmission cable (between outdoor and indoor units) - Type: shielding wire Cross section: 1.0 ~ 1.5mm - Insulation material: PVC Maximum allowable temperature: 60°C - Maximum allowable length: under 640m Remote control cable - Type: 3-core cable Central control system Category Wire types...
Page 47 ELECTRICAL WIRING Outdoor Unit Power Cable Specifications and Switch Capacity Wire Thickness (mm Type of Earth Leakage Power Outdoor Circuit Breaker Main power Specifications Branch wire Ground wire Unit (ELCB) cable wire 3 Ø, 380 V3N~, 60 Hz 1Unit 1 Ø, 220 V~, 60 Hz 3 Ø, 380 V3N~, 60 Hz 2.5 ~ 4.0 2Unit...
Page 48 ELECTRICAL WIRING Examples of Transmission Cable Caution 1. Outdoor Power supply [Outdoor Unit] (1Ø 2wires) (Main Switch) R S T N Switch Fuse Indoor Power supply (1Ø 2wires) Power Line (4 Wires Cable) Power Line (2 Wires Cable) Communication Line (2 Wires Cable) Pull Box Pull Box...
Page 49 ELECTRICAL WIRING : Transmission cable (3-strand): cable remote control Master : Single-phase power cablea Slave : Transmission cable (2-strand shield cable): Between ODU : Transmission cable (2-strand shield cable): Between ODU to IDU Power supply switch * Ground Wiring Diagram is not included. (Switch / leakage current circuit breaker) Single-phase...
Page 50 ELECTRICAL WIRING Between the Slave IDU To Master ODU CN06-COMM-TB 12 V Dry2 Dry1 CN06-COMM-TB 12 V Dry2 Dry1 h GND is a "-" terminal for dry contact of the outdoor unit. GND does not mean ground. h Check if the terminals of the master and slave outdoor units are compatible (for example, A-A and B-B).
Page 51 ELECTRICAL WIRING Examples of Bad Power Cable Connections Do not connect the power of each indoor unit separately as below. : Transmission cable (3-strand): cable remote control : Single-phase power cable : Transmission cable (2-strand shield cable): between the outdoor and indoor units Single-phase 60Hz 220V power Caution 1.
Page 52 ELECTRICAL WIRING Outdoor Unit Wiring Connection Main Power Cable Connection 1. Fix it ﬁrmly so that it does not slip. 2. Attach the insulation sleeve. 3. Make sure to do grounding work. Main power cable Transmission cable between Keep the separation distance of more than the outdoor and indoor units 50mm between the main power cable and the transmission cable.
Page 53 ELECTRICAL WIRING Automatic Addressing for Indoor Unit The address of indoor unit will be set by auto addressing. - Wait for 3 minutes after supplying power (outdoor unit, indoor unit) - Press the switch (SW01C) of the indoor unit for 5 seconds. - “88”...
Page 54 ELECTRICAL WIRING Turn all the dip switches OFF on the outdoor unit main Power On board before auto-addressing setup. Waiting 3 minutes Press the SW01C for 5 seconds. Start auto-addressing setup. is displayed. •Finish auto-addressing setup. •The number of the connected indoor units whose auto-addressing is completed is displayed for 30 seconds on the 7-segment LED after...
Page 55 ELECTRICAL WIRING DIP Switch Setup The number is sequentially appeared on the 7-segment. (The farthest dip switch from the 7-seg- ment is granted the first number 1. ) Check the settings after the dip switch setup - After the dip switch setup, turn ON the outdoor unit power then you can check the setting val- ues of the outdoor unit on the 7-segment LED.
Page 56 ELECTRICAL WIRING Master Outdoor Unit Settings Check The numbers should display one by one on 7-segment after the power is turned on. The numbers correspond to each setting. <Display Order> ① Master model capacity → ② Slave model capacity → ③ Total capacity → ④ System type → ⑤...
Page 57: Additional Functions
ADDITIONAL FUNCTIONS ADDITIONAL FUNCTIONS Additional Functions Setup Lift the dip switch #5 up to set up the additional functions you desire by using the buttons. CAUTION You will be able to set the switch functions only when the power (all of the indoor units) is OFF.
Page 58 ADDITIONAL FUNCTIONS Cool & Heat selector It controls the cooling/heating through a mode setup from the outdoor unit and the Cool & Heat selector switch. Mode Setup Dip switch #5 of the outdoor unit ON Display "Func" on 7-segment using '▶', and '◀' buttons, and press the '●' button.
Page 59 ADDITIONAL FUNCTIONS Static pressure compensation mode Lift the dip switch #5 up to set up the additional functions as you desire by using the buttons. This function secures the air flow rate of outdoor unit, in case static pressure has been applied like using duct at fan discharge of the outdoor unit.
Page 60 ADDITIONAL FUNCTIONS Night Low Noise Mode It allows the outdoor unit fan to rotate slower with a low fan RPM in order to reduce noise from the outdoor unit fan during nighttime when the cooling load is low. Mode Setup Dip switch #5 of the outdoor unit ON Display "Func"...
Page 61 ADDITIONAL FUNCTIONS Outdoor Unit Address Setup It is an address setup function for the outdoor unit in order to distinguish the outdoor units from each other when installing the central control system. Mode Setup Dip switch #5 of the outdoor unit ON Display "Func"...
Page 62 ADDITIONAL FUNCTIONS Snow Removal Function It operates a fan to prevent snow from piling up in the area of heavy snow. Mode Setup Dip switch #5 of the outdoor unit ON Display "Func" on 7-segment using '▶', and '◀' buttons, and press the '●' button. Display "Fn6"...
Page 63 ADDITIONAL FUNCTIONS Target Static Pressure Setup It is used to change the target value of the outdoor unit and adjust it to the purpose of use. Mode Setup Dip switch #5 of the outdoor unit ON Display "Func" on 7-segment using '▶', and '◀' buttons, and press the '●' button.
Page 64: Self-Diagnosis Function
SELF-DIAGNOSIS FUNCTION SELF-DIAGNOSIS FUNCTION Self-Diagnosis Function Error Indicator - This function indicates types of failure in self-diagnosis and occurrence of failure for air condi- tioner. - Each error mark is displayed on the cable remote control, the 7-segment LED of the outdoor unit control board as shown in the table.
Page 65 SELF-DIAGNOSIS FUNCTION Display Error types Cause of error Inverter Board Input Over Master Outdoor Unit Inverter Board Input Cur- Current(RMS) of Master Outdoor Unit rent excess (RMS) High-pressure switch operation Discharge pressure increase due to compres- sor discharge pressure error or clogged pipe High/low-pressure of input voltage Unstable input voltage Excessive increase of compressor dis-...
Page 66 SELF-DIAGNOSIS FUNCTION Display Error types Cause of error Fan operation failure error Fan operation error Main PCB EEPROM error Main PCB EEPROM Access error Fan PCB EEPROM error Fan PCB EEPROM Access error Communication Error Between Master Failing to receive Slave Unit signal at main Outdoor Unit and Other Outdoor Unit PCB of Master Outdoor Unit Fan board communication error...
Page 67 SELF-DIAGNOSIS FUNCTION Display Error types Cause of error Exhaust gas high error Coolant system error No.1_Comp error Compressor No.1 liquid compress and com- bustion damage/ engine tracking error Compressor No.2 liquid compress and com- No2._Comp error bustion damage/ engine tracking error High compression ratio error Compression ratio error Water sensor error...
Page 68 SELF-DIAGNOSIS FUNCTION CAUTION Error message 157 If the “oil check” displays in the indoor unit remote control, it indicates that it is time to replace the oil which has to be done every 10,000 hours. If you do not get a maintenance check within 500 hours after the sign displayed, the indoor unit will not be able to operate.
Page 69: Regular Maintenance
REGULAR MAINTENANCE REGULAR MAINTENANCE Regular Maintenance Performing a maintenance on a regular basis is important requirement to maintain the engine’s best condition. Give special attention to the safety matters when replacing parts or during the maintenance. - Warranty Period This product has full one-year warranty from the day when the test run is completed. - Regular maintenance service is provided by the company even after the warranty period is over because the extended maintenance in a regular basis is needed for the safety and convenience of the customers.
Page 70 • Use authentic products from LG electronics for the parts replacement. Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be responsible for any damages involved.
Page 71 REGULAR MAINTENANCE Prepare tools and oil Replace the engine Drain out the Reﬁll the /oil ﬁlter preparation engine oil oil ﬁlter engine oil Check Check the engine Reset the oil system the oil level operation operation timer Drain the engine oil out of the sub oil pan and inside the engine - Stop the engine by controlled shutdown before the maintenance.
Page 72 REGULAR MAINTENANCE Prepare tools and oil Drain out the Replace the engine Reﬁll the /oil ﬁlter preparation engine oil oil ﬁlter engine oil Check Check the engine Reset the oil system the oil level operation operation timer Drain the engine oil out of the sub oil pan and inside the engine - Oil filter removal Place an oil tray under the filter to prevent the remaining oil from running off during the oil filter removal.
Page 73 REGULAR MAINTENANCE Prepare tools and oil Drain out the Reﬁll the Replace the engine /oil ﬁlter preparation engine oil engine oil oil ﬁlter Check Check the engine Reset the oil system the oil level operation operation timer Refill the engine oil Replenish the main oil tank, the level sensing tank, and the engine with new engine oil.
Page 74 REGULAR MAINTENANCE Prepare tools and oil Drain out the Reﬁll the Replace the engine /oil ﬁlter preparation engine oil engine oil oil ﬁlter Check Check the engine Reset the oil system the oil level operation operation timer Check the engine operation - Flip on the ENG_STOP switch(SW02) and the GAS OFF selecting switch(SW01) located in the external board of the outdoor unit control panel towards the 「Upward」...
Page 75 REGULAR MAINTENANCE Prepare tools and oil Drain out the Reﬁll the Replace the engine /oil ﬁlter preparation engine oil engine oil oil ﬁlter Check Check the engine Reset the oil system the oil level operation operation timer Reset the oil system operation timer - It resets a timer after the engine oil change.
Page 76 • Use authentic products from LG electronics for the parts replacement. Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be responsible for any damages involved.
Page 77 REGULAR MAINTENANCE CAUTION • When removing a high-tension wire, be sure to hold the cap area. (refer to Figure 2) • Be careful not to let any impurities inside the cylinder during the replacement. • Use the 16mm ignition plug wrench socket. Using the wrong size tool (bigger size) may cause damages on the engine.
Page 78 • Use authentic products from LG electronics for the parts replacement. Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be responsible for any damages involved.
Page 79 REGULAR MAINTENANCE 2) Valve clearance adjustment - Adjust the air intake valve and the exhaust valve of the cylinder 1. - Adjust the air intake valve of the cylinder 2. - Adjust the exhaust valve of the cylinder 3. - Rotate the engine crank shaft one time (360°) and adjust it to "0" marked on the crank shaft pulley.
Page 80 REGULAR MAINTENANCE Cylinder number Valve Exhaust Exhaust Exhaust Exhaust intake intake intake intake ● ● ● ● Top dead center of cylinder 1 ○ ○ ○ Top dead center of cylinder 1 3) After adjustment Put the engine rocker cover and the high-tension wire back together. (Rocker cover tightening torque: 10.8~12.8N·m / 1.1~1.3 kg·m) Check the engine operation Flip on the ENG_STOP switch(SW02) and the GAS OFF selecting switch(SW01) located in the...
Page 81 - The air cleaner should be replaced every 10,000 hours or 5 years. (whichever comes first) - Use the authentic products from LG electronics for the air cleaner replacement. - The air cleaner replacement proceeds as follows.
Page 82 REGULAR MAINTENANCE Vacuator Valve Figure 1 Loosening a clamp Figure 1 Loosening a clamp Figure 2 Removal of the used Figure 2 Removal of the used element/cleaning inside element/cleaning inside Figure 3 Element replacement Figure 4 tightening a clamp CAUTION •...
Page 83 • Use authentic products from LG electronics for the parts replacement. Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be responsible for any damages involved.
Page 84 REGULAR MAINTENANCE - Remove a clip for fixing pipes. (Figure 2) Figure 2 Removal of a pipe fixing bolt CAUTION Make sure to remove the clip for fixing pipes. - Turn the tension balancer bolt counter clockwise to remove the belt. (Figure 3) Counter clockwise: decrease in tension Clockwise: increase in tension - Adjust the belt tension after replacing with a new belt.
Page 85 REGULAR MAINTENANCE - After completing the tensioning, tighten the compressor bracket fixing bolt. (tightening torque: 78~90 N·m) - Put the pipe fixing clip back together to fix the compressor inlet/outlet pipes. Check the engine operation Flip on the ENG_STOP switch(SW02) and the GAS OFF selecting switch(SW01) located in the external board of the outdoor unit control panel towards the 「Upward」...
Page 86 - The drive belt should be replaced every 10,000 hours or 5 years. (whichever comes first) - Use authentic products from LG electronics for the drive belt replacement. - (caution) Stop the engine by controlled shutdown before the maintenance. (refer to 'Opera-...
Page 87 REGULAR MAINTENANCE Coolant reﬁll (MAX) Insufﬁcient coolant (MIN) Level gauge Figure 1 Coolant level check Figure 2 Coolant refill Lenses Cover Focus control ring Prism Coolant concentration meter Tester gradation/markings (40.5%) CAUTION • Be careful not to let any coolant in the mouth or eyes during the coolant refill. •...
Page 88 If the indoor unit is operated by the customer’s remote control during internal work, it may cause injury or equipment damage. • Use authentic products from LG electronics for the parts replacement. Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be responsible for any damages involved.
Page 89 REGULAR MAINTENANCE Figure 1 Remove the bolts Figure 2 Cleansing liquid Figure 3 Clean the stones Figure 6 Tighten the bolts Figure 5 Check for the O ring Figure 4 Refill the stones Drain filter stones maintenance/refill...

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