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 : MFL61971216
http://www.lghvac.com
www.lg.com
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Table of Contents
Related Manuals for LG LDN127HV4
Summary of Contents for LG LDN127HV4
- 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. TYPE : Ceilling Concealed Duct http://www.lghvac.com www.lg.com P/NO : MFL61971216...
- 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 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? Installer Setting -E.S.P. - Page 6 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”...
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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 CAUTION - Select and mark the position for fixing bolts. - 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. Front of view • The unit must be declined to the drain hose connected when finished installation. Ceiling CORRECT INCORRECT...
- Page 10 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 11 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 12: 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 13: 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 14 THE INDOOR UNIT INSTALLATION CAUTION The connecting cable connected to the indoor and outdoor unit should be com- plied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA). NORMAL CROSS-SECTIONAL AREA 0.75mm If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent.
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Page 15: 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 16 REMOTE CONTROLLER INSTALLATION Please fix remote controller upper part into the backplate attached to the surface of the wall, as the picture below, and then, connect with back- plate by pressing lower part. - Please make sure to leave no gaps on the top, bottom, left or right sides between the remote controller and backplate.
- Page 17 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 18 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 19 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. - After entering into the installer setting mode, select the thermistor sensor setting code value by pressing the...
- Page 20 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 21 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 22 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 23 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) 15(0.6) 16(0.62) 18(0.70) 20(0.78) Setting Value HIGH HIGH 1130...
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Page 24: Self-Diagnosis Function
SELF-DIAGNOSIS FUNCTION SELF-DIAGNOSIS FUNCTION Indoor Unit Error Ex) Error 03 (Remote controller error) 3 Times 3 Times 3 Times LED02G LED1 (GREEN) 2 Sec. 2 Sec. LED2 LED 1 LED 2 Indoor Error Code Description (Green) (Red) status 1time ◑ Indoor Room sensor error 2times ◑... -
Page 25: 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...