Table of Contents
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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 : Ceilling Concealed Duct
P/NO : MFL67206504
http://www.lghvac.com
www.lg.com
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Table of Contents
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Summary of Contents for LG LA240HSV
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Page 1: Installation Manual
• 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 : Ceilling Concealed Duct http://www.lghvac.com www.lg.com P/NO : MFL67206504... -
Page 2: Tips For Saving
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 • Make sure that a sekparate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local laws and regulations and this installation manual. An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire. •...
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Page 5: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING OPTIONAL OPERATION ENERGY Installer Setting - Test Run Mode Installer Setting - Setting Address of Central Control Installer Setting - Thermistor IMPORTANT SAFETY Installer Setting - Group Setting INSTRUCTIONS Installer Setting - Celsius / Fahrenheit Switching INSTALLATION PLACES HOW TO SET E.S.P? -
Page 6: Installation Places
INSTALLATION PLACES INSTALLATION PLACES Indoor unit - The place shall easily bear a load exceeding four times the indoor unit’s weight. - The place shall be able to inspect the unit as the figure. - The place where the unit shall be leveled. - The place shall allow easy water drainage.(Suitable dimension “H”... -
Page 7: The Indoor Unit Installation
THE INDOOR UNIT INSTALLATION THE INDOOR UNIT INSTALLATION Installation of Unit Install the unit above the ceiling correctly. filter Case 1 Position of suspension Bolt body - Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. Joint canvas - Apply a filter Accessory at air return hole. - Page 8 THE INDOOR UNIT INSTALLATION - Select and mark the position for fixing bolts. CAUTION - Drill the hole for set anchor on the face of Tighten the nut and bolt top revent unit ceiling. falling. - Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the ceiling.
- Page 9 THE INDOOR UNIT INSTALLATION CAUTION Install declination of the indoor unit is very important for the drain of the duct type air conditioner. Minimum thickness of the insulation for the connecting pipe shall be 5mm(3/16 inch). Front of view • The unit must be declined to the drain hose connected when finished installation. Ceiling CORRECT INCORRECT...
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Page 10: Combination Indoor Units
THE INDOOR UNIT INSTALLATION Combination indoor units BD unit (PMBD3641) The indoor units connectable to the outdoor unit are shown below A8UW54GFA0 [LMU540HV] Outdoor Unit Indoor Unit (Btu/h class) Capacity Type (Btu/h class) Outdoor Unit Total capacity of connectable (Btu/h class) indoor units (Btu/h) Vertical Ceiling... -
Page 11: Flaring Work
THE INDOOR UNIT INSTALLATION Flaring work Flare nut Copper tube Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the fol- lowing procedure. Cut the pipes - Use the accessory piping kit or the pipes Flaring work purchased locally. -
Page 12: Connection Of Piping - Indoor, Outdoor, Bd Unit
THE INDOOR UNIT INSTALLATION Connection of piping - Indoor, Outdoor, BD Unit Align the center of the piping and sufficiently tighten the flare nut by hand. Refrigerant Connections Indoor unit tubing Flare nut Pipes Capacity Pipe size (kBtu/h) Liquid 1/4 (Ø6.35) 1/2 (Ø12.7) Open-end wrench (fixed) 3/8 (Ø9.52) -
Page 13: Plumbing Materials And Storage Methods
THE INDOOR UNIT INSTALLATION 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 14 THE INDOOR UNIT INSTALLATION 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: Indoor Unit Drain Piping
THE INDOOR UNIT INSTALLATION Indoor Unit Drain Piping - Connect the main drain pipe to the exterior and leave it provisionally until the test comes to an end. Upward - Feed water to the flexible drain hose and Pipe clamp routing check the piping for leakage. -
Page 16: Heat Insulation
THE INDOOR UNIT INSTALLATION Heat insulation Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Precautions in high humidity circumstance: Control box cover This air conditioner has been tested (On which the Electric according to the "KS Standard Conditions Wiring Connection is put) with Mist"... - Page 17 THE INDOOR UNIT INSTALLATION CAUTION The power connecting cable between the outdoor and indoor units must com- ply with the following specifications: NRTL Recognized (for example, UL or ETL recognized and CSA certified). AWG 18-4 is the minimum recommend- ed wire size, however, the selected con- ductors must comply with local codes and be suitable for installation in wet locations.
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Page 18: Remote Controller Installation
REMOTE CONTROLLER INSTALLATION REMOTE CONTROLLER INSTALLATION Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup. - Please set it up not to bend because poor setup could take place if setup board bends. Please set up remote controller board fit to the reclamation box if there is a reclamation box. - Page 19 REMOTE CONTROLLER INSTALLATION Please connect indoor unit and remote controller using connection cable. Please check if connector is normally connected. Indoor SPEED TEMP Unit side OPER MODE Connecting cable Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m.
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Page 20: Wired Remote Controller Installation
REMOTE CONTROLLER INSTALLATION 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. -
Page 21: Optional Operation
OPTIONAL OPERATION OPTIONAL OPERATION Installer Setting - Test Run Mode After installing the product, you must run a Test Run mode. For details related to this operation, refer to the product manual. OPER When pressing the button and MODE button simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. -
Page 22: Installer Setting - Setting Address Of Central Control
OPTIONAL OPERATION Installer Setting - Setting Address of Central Control It's the function to use for connecting central control. Please refer to central controller manual for the details. OPER When pressing the button and button MODE simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. -
Page 23: Installer Setting - Thermistor
OPTIONAL OPERATION Installer Setting - Thermistor This is the function to select the temperature sensor to judge the room temperature. OPER When pressing the button and MODE button simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. -
Page 24: Installer Setting - Group Setting
OPTIONAL OPERATION Installer Setting - Group Setting It is a function for settings in group control, or 2-remote controller control. OPER When pressing the button and button MODE simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. -
Page 25: Installer Setting - Celsius / Fahrenheit Switching
OPTIONAL OPERATION Installer Setting - Celsius / Fahrenheit Switching This function is used for switching the display between Celsius and Fahrenheit. (Optimized only for U.S.A) OPER When pressing the button and button MODE simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. -
Page 26: How To Set E.s.p
HOW TO SET E.S.P? HOW TO SET E.S.P? Installer Setting - E.S.P. This is the function that decides the strength of the wind for each wind level and because this function is to make the installation easier. • If you set ESP incorrectly, the air conditioner may malfunction. •... - Page 27 HOW TO SET E.S.P? Static Pressure(mmAq(in.Aq)) Capacity Step 2.5(0.1) 4(0.15) 6(0.23) 8(0.31) 10(0.39) 12(0.47) 14(0.55) 16(0.62) 18(0.70) 20(0.78) Setting Value HIGH HIGH 1130...
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Page 28: Dip Switch Setting
DIP SWITCH SETTING DIP SWITCH SETTING Indoor PCB Function Description Setting Off Setting On Default Selection of Master or SW3 Group Control Master Slave Slave Wired/Wireless remote Dry Contact Selection of Dry Contact controller Auto Mode Mode Selection of Manual or Auto operation Mode Continuous operation Installation...