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INSTALLATION MANUAL
AIR CONDITIONER
• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
• Please retain this installation manual for future reference after reading it
thoroughly.
TYPE : SINGLE PACKAGE
P/NO : MFL67445803
www.lg.com
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Table of Contents
Related Manuals for LG AK-Q300BC00
Summary of Contents for LG AK-Q300BC00
- Page 1 • Please read this installation manual completely before installing the product. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only. • Please retain this installation manual for future reference after reading it thoroughly. TYPE : SINGLE PACKAGE www.lg.com P/NO : MFL67445803...
- 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: •...
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Page 3: Important Safety Instructions
SAFETY PRECAUTIONS 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 SAFETY PRECAUTIONS • Be sure the installation area does not deteriorate with age. - If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury. • Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases.
- Page 5 SAFETY PRECAUTIONS • Take care to ensure that nobody could step on or fall onto the unit. - This could result in personal injury and product damage. CAUTION Installation • Always check for gas (refrigerant) pressure after installation or repair of product. - Low refrigerant levels may cause failure of product.
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Page 6: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING INSTALLATION OF UNIT ENERGY Inspection Location and Recommendations Ductwork IMPORTANT SAFETY Change Airflow INSTRUCTIONS Plumbing materials and storage methods Condensate Drain Piping Filter Installation INTRODUCTION Installation of Remote Controller Features (10 / 12.5 / 15 RT) Electronic Wiring Features (20 / 25 RT) Field Wiring... -
Page 7: Introduction
INTRODUCTION INTRODUCTION Features (10 / 12.5 / 15 RT) Front View Air outlet vents Return Drain Hole Motor Access Panel Supply Air outlet Rear View vents Control access panel Compressor Air intake vents access panel... -
Page 8: Features (20 / 25 Rt)
INTRODUCTION Features (20 / 25 RT) Front View Air outlet vents Return Drain Hole Motor Access Panel Supply Rear View Air outlet vents Control access panel Compressor access panel Air intake vents... -
Page 9: Dimensional Data (10 / 12.5 / 15 Rt)
DIMENSIONAL DATA DIMENSIONAL DATA (10 / 12.5 / 15 RT) Single packaged cooling unit are designed for CLEARANCE 1160mm CLEARANCE 860mm outdoor mounting with vertical condenser dis- charge. They can be located either at ground level or on roof. Each unit contains an operating charge of Refrigerant as shipped. -
Page 10: Dimensional Data (20 / 25 Rt)
DIMENSIONAL DATA DIMENSIONAL DATA (20 / 25 RT) Single packaged cooling unit are designed for CLEARANCE 860mm outdoor mounting with vertical condenser dis- CLEARANCE 1160mm charge. They can be located either at ground level or on roof. Each unit contains an operating charge of Refrigerant as shipped. -
Page 11: Installation Of Unit
INSTALLATION OF UNIT INSTALLATION OF UNIT Inspection Lifting Beam Recommended Check for damage after unit is unloaded. Rigging Method Report promptly, to the carrier, any dam- age found to unit. Do not drop unit. Spreader Bar Check the unit nameplate to determine if the unit voltage is correct for the applica- tion. -
Page 12: Ductwork
INSTALLATION OF UNIT Ductwork Change Airflow Horizontal flow to Down flow Conversion Ductwork construction guidelines Remove the covers from the down flow Connections to the unit should be made with openings on the base panel by unscrewing 3"(76mm) canvas connectors to minimize as shown. -
Page 13: Plumbing Materials And Storage Methods
INSTALLATION OF UNIT 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. Refrigerant piping on three principles Drying Cleanliness... - Page 14 INSTALLATION OF UNIT 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.
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Page 15: Condensate Drain Piping
INSTALLATION OF UNIT Condensate Drain Piping Installation of Remote Controller A 1 inch female condensate drain connection is located on the corner of the unit next to the Please insert wired remote controller con- motor access panel. A trap should be installed nection cable to the CN-REMO in indoor and filled with water before starting the unit to PCB, or connect directly local connection... - Page 16 INSTALLATION OF UNIT <20/25RT> 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 Connection cable (Local supply) setup could take place if setup board bends.
- Page 17 INSTALLATION OF UNIT Please fix remote controller upper part into the setup board attached to the surface of the wall, as the picture below, and then, connect with setup board by pressing lower part. - Please connect not to make a gap at the remote controller and setup board’s upper and lower, right and left part.
- Page 18 INSTALLATION OF UNIT Please connect indoor unit and remote controller using connection cable. Please check if connector is normally connected. Product side Connecting cable <Meaning of wire color> Signal Yellow Black Please use extension cable if the distance between wired remote controller and the product is more than 10m.
- Page 19 INSTALLATION OF UNIT Wired remote controller installation - Since the room temperature sensor is in the remote controller, the remote controller box should be installed in a place away from direct sunlight, high humidity and direct supply of cold air to maintain proper space temperature.
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Page 20: Electronic Wiring
INSTALLATION OF UNIT Electronic Wiring CAUTION Follow ordinance of your governmental organi- • Provide a circuit breaker between power zation for technical standard related to electri- source and the unit as shown below. cal equipment, wiring regulations and guid- ance of each electric power company. Main power source WARNING •... -
Page 21: Field Wiring
INSTALLATION OF UNIT Field Wiring 10/12.5/15 RT – 220 V3~ 60 Hz Power supply 3 Phase 3 Wires 60Hz 220V (Main Switch) R(L1) S(L2) T(L3) Switch ELCB Power Line (3 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe). - Page 22 INSTALLATION OF UNIT 10/12.5/15RT - 380-415 V3N~ 50 Hz Power supply 3 Phase 4 Wires 50Hz 380-415V (Main Switch) R S T N Switch ELCB Power Line (4 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
- Page 23 INSTALLATION OF UNIT 10/12.5/15RT - 380 V3N~ 60 Hz Power supply 3 Phase 4 Wires 60Hz 380V (Main Switch) R S T N Switch ELCB Power Line (4 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
- Page 24 INSTALLATION OF UNIT 15RT - 460 V3~ 60 Hz Power supply 3 Phase 3 Wires 60Hz 460V (Main Switch) R(L1) S(L2) T(L3) Switch ELCB Power Line (3 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
- Page 25 INSTALLATION OF UNIT 20/25 RT – 220 V3~ 60 Hz - When the power source is supplied to Each outdoor unit individually. (Main Switch) Power supply 3 Phase 3 Wires 60Hz 220V R(L1) S(L2) T(L3) Switch ELCB Power Line (3 Wires Cable) CAUTION •...
- Page 26 INSTALLATION OF UNIT 20/25 RT – 380-415 V3N~ 50 Hz (Main Switch) Power supply 3 Phase 4 Wires 50Hz 380-415V R S T N Switch ELCB Power Line (4 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
- Page 27 INSTALLATION OF UNIT 20/25 RT – 380 V3N~ 60 Hz (Main Switch) Power supply 3 Phase 4 Wires 60Hz 380V R S T N Switch ELCB Power Line (4 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
- Page 28 INSTALLATION OF UNIT 20/25 RT – 460 V3~ 60 Hz (Main Switch) Power supply 3 Phase 3 Wires 60Hz 460V R(L1) S(L2) T(L3) Switch ELCB Power Line (3 Wires Cable) CAUTION • Unit ground Lines are required for preventing electrical shock accident during current leak- age, Communication disorder by noise effect and motor current leakage (without connection to pipe).
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Page 29: Connect The Cable To The Product
INSTALLATION OF UNIT Connect the cable to the Product Remove the cover control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually as the following. Secure the cable onto the control board with the holder (clamper). Refix the cover control to the original position with the screw. - Page 30 INSTALLATION OF UNIT 20/25RT - 460 V3~ The power source must be supplied to the Master Control Box (A:Master) only. Fix firmly not to be displaced Main Power Terminal Block Insulation sleeves attachments Ground Cable 10/12.5/15 RT 20/25 RT Conduit panel Conduit panel Lock nut Lock nut...
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Page 31: Dip Switch Setting In Indoor Main Pcb
INSTALLATION OF UNIT Dip Switch Setting in Indoor Main PCB Function Description Setting "Off" Setting "On" Default Selection of Master or Group Control Master Slave Slave Selection of Dry Contact Dry Contact Mode Variable Auto Mode Return Air Sensor Installed Sensor or Not Not installed Installed Installed CTI or not... -
Page 32: Evaporator Fan Adjustment
INSTALLATION OF UNIT Evaporator Fan Adjustment Use the following procedure to determine the proper adjustment of the evaporator fan for a spe- cific application. Determine total system external static pressure (In mm water column) with accessories installed. to accomplish this: 1) Obtain the design airflow rate and the design external static pressure drop through the dis- tribution system. -
Page 33: Trial Run Mode
INSTALLATION OF UNIT To Increase Belt Tension Loosen adjustment nut(4places). Pull motor back until belt is tight. Tighten adjustment bolt after belt has cor- rect tension. FORCE(F) HEIGHT(S) REMARK 4~4.9(kgf) 20~30mm Trial Run Mode After installing the product, you must run a Test Run mode. For details related to this operation, refer to the product manual. -
Page 34: Self-Diagnosis Function
INSTALLATION OF UNIT Self-Diagnosis Function Error Indicator - This function indicates types of failure in self-diagnosis and occurrence of failure for air condition. - Error mark is displayed on wired remote controller, and 7-segment LED of outdoor unit control board as shown in the table. - Page 35 INSTALLATION OF UNIT Display Title Cause of Error Master Inverter Compressor High System is turned off by Master Inverter Compressor Discharge Temperature High Discharge Temperature Slave Inverter Compressor High Discharge System is turned off by Slave Inverter Compressor High Temperature (For 20/25RT Only) Discharge Temperature Master Constant Speed Compressor1 System is turned off by Master Constant Speed...
- Page 36 INSTALLATION OF UNIT Display Title Cause of Error Master Outdoor Unit Faulty IPM Master Outdoor Unit IPM Temperature Sensor Temperature Sensor short/open Slave Outdoor Unit Faulty IPM Slave Outdoor Unit IPM Temperature Sensor short/open Temperature Sensor Omitting connection of R, S, T power of Omitting connection of Master Master Omitting connection of R, S, T power of...
- Page 37 INSTALLATION OF UNIT Display Title Cause of Error 1 Master Fan CT Sensor Error Master Fan CT Sensor open or short Slave Fan CT Sensor Error (For 20/25RT Slave Fan CT Sensor open or short Only) Master Fan DC Link High Voltage Error Master Fan Current is abnormal 2 Slave Fan DC Link High Voltage Error Slave Fan Current is abnormal...
- Page 38 INSTALLATION OF UNIT Display Title Cause of Error Communication Error between Master Failing to receive Slave signal at main PCB of and Slave (For 20/25RT Only) 1 0 4 2 Master 1 Master Fan PCB Communication Error Failing to receive fan signal at main PCB of unit. 1 0 5 Slave Fan PCB Communication Failing to receive fan signal at main PCB of unit.
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Page 39: Starting The Unit
INSTALLATION OF UNIT Starting the Unit Voltage With the compressor operating, check the line Heating Mode voltage at the unit. The voltage should be within the range shown on the unit name- (If unit is equipped with electric heater.) plate. If low voltage is encountered, check the Check to ensure all grilles and registers are size and length of the supply line from the open and all unit access doors are closed... -
Page 40: Final Installation Checklist And Maintenance
INSTALLATION OF UNIT Final Installation Checklist and Maintenance - Is the condenser fan and indoor blower operating correctly, with proper rotation and without undue noise? - Have voltage and running currents been checked to determine if it is within limits? - Have the air discharge grilles been adjusted to balance the system? - Has the ductwork been checked for air leaks and condensation? - Has the indoor airflow been checked and adjusted if necessary? - Page 41 INSTALLATION OF UNIT Maintenance Performed by Serviceman-Cooling Season To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the entire system at least once each year, or more frequently if conditions warrant. Your serviceman may examine these areas of your unit: ➔...
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Page 42: Installation Guide At The Seaside
Install the outdoor unit on - If you can’t meet above guide line in the the opposite side of the sea wind direction. seaside installation, please contact LG Electronics for the additional anticorro- sion. - Periodic ( more than once/year ) cleaning...