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INSTALLATION MANUAL

4-WAY CEILING CASSETTE

AIR

CONDITIONER

http://www.lghvac.com

www.lg.com

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.

MFL61971220

Rev.00_013119

Copyright © 2013 - 2019 LG Electronics Inc. All Rights Reserved.

ENGLISH

FRANÇAIS

ESP

AÑOL

Summary of Contents for MFL61971220

Page 1: ...efore 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 MFL61971220 Rev 00_013119 Copyright 2013 2019 LG Electronics Inc All Rights Reserved ENGLISH FRANÇAIS ESPAÑOL ...

Page 2: ...conditioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You ca...

Page 3: ...e center or a professional installation agency Otherwise it may cause a fire electrical shock explosion or injury Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely it could result in a fire or electric shock due to dust water etc A...

Page 4: ...heavy object on the power cord Otherwise it may cause a fire or electrical shock When the product is submerged into water always contact the service center Otherwise it may cause a fire or electrical shock Take care so that children may not step on the outdoor unit Otherwise children may be seriously injured due to falling down CAUTION Installation Install the drain hose to ensure that drain can b...

Page 5: ...ng 13 INSTALLATION OF DECORATIVE PANEL ACCESSORY 15 TEST RUNNING 16 INSTALLATION INSTRUCTIONS 16 Installer Setting How to enter installer setting mode 17 Installer Setting Installer Setting Code Table 18 Installer Setting Setting Address of Central Control 18 Installer Setting Checking Address of Central Control TABLE OF CONTENTS TABLE OF CONTENTS ...

Page 6: ... can be easily obtained A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling or other obstacles The indoor unit must keep the maintenance space Ceiling Ceiling Board Ceiling Board Floor Unit mm inch 300 11 13 16 or more Above 2 500 98 7 16 4 000 157 1 2 or less 1 000 39 3 8 or more 500 19 11...

Page 7: ...the position for fixing bolts and piping hole Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose Drill the hole for anchor bolt on the wall When using cardboard on the bottom of packaging use after separating installation paper from bottom of the product packaging using back of a knife as shown in the picture TM TN TP Included ...

Page 8: ...e nut and bolt to prevent unit falling Maintenance drain port Upward routing not allowed Pipe clamp Indoor unit Indoor Unit Drain Piping Drain piping must have down slope 1 50 to 1 100 be sure not to provide up and down slope to prevent reversal flow During drain piping connection be careful not to exert extra force on the drain port on the indoor unit The outside diameter of the drain connection ...

Page 9: ...rial for the refrigerant piping which has an excellent heat resistance over 120 C Precautions in high humidity circumstance This air conditioner has been tested according to the KS Standard Conditions with Mist and confirmed that there is not any default However if it is operated for a long time in high humid atmosphere dew point temperature more than 23 C water drops are liable to fall In this ca...

Page 10: ... the national regulation CAUTION The Power cord connected to the unit should be selected according to the following specifications If the supply cord is damaged it must be replaced by a special cord or assembly available from the manufacturer of its service agent AWG18 20 mm 35 5 mm GN YL 10 3 mm Power wire Ground wire Round pressure terminal Connect same thickness wiring to both sides It is forbi...

Page 11: ... Put the end of the copper tube pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the tubing 3 Putting nut on Remove flare nuts attached to indoor and outdoor units than put them on pipe tube having completed burr removal Not possible to put them on after flaring work 4 Flaring work Carry out flaring work using flaring tool as shown below 5 Check Compare the fla...

Page 12: ...t with torque wrench ensure the direction for tightening follows the arrow on the wrench ODU Capacity kBtu h Refrigerant Connections Pipe size Liquid Gas Single Zone 18 3 8 Ø9 52 5 8 Ø15 88 Outside diameter Torque mm inch N m kgf m lbf ft Ø6 35 1 4 14 18 1 4 1 8 10 13 Ø9 52 3 8 34 42 3 5 4 3 25 31 Ø12 7 1 2 49 61 5 0 6 2 36 45 Ø15 88 5 8 69 82 7 0 8 4 51 60 Ø19 05 3 4 100 120 10 0 12 2 73 88 Indoo...

Page 13: ...let grille from front panel Front grille 2 Remove the Corner covers of the panel Corner cover 3 Fit the panel on the unit by inserting hooks as shown in picture 5 Fit the corner covers 4 Insert two screws on diagonal corners of panel Do not tighten the bolts completely The fixing screws are included in the indoor unit box Check the alignment of panel with the ceiling Height can be adjusted using h...

Page 14: ...er guide of inlet grille Install the air inlet grille and filter on the panel TM TN TP 11 Install the air inlet grille and Filter on the panel CN VANE 1 2 CN DISPLAY Link Link Filter guide Link Link Filter guide Lin Link Link Filter guide Link Link Lin Link Filte Filter guid guide Link Filter guide Link Filter guide Air conditioner unit Decorative panel Fit the insulator this part and be careful f...

Page 15: ...ture and appearance check following items Is the circulation of air adequate Is the draining smooth Is the heat insulation complete refrigerant and drain piping Is there any leakage of refrigerant Is the remote controller switch operated Is there any faulty wiring Are not terminal screws loosened M4 118 N cm 12 kgf cm M5 196 N cm 20 kgf cm M6 245 N cm 25 kgf cm M8 588 N cm 60 kgf cm To cancel the ...

Page 16: ...it 1 time 4 Reset the remote controller to use the general operation mode CAUTION Installer setting mode is to set the detail function of the remote controller If the installer setting mode is not set correctly it can cause problems to the product user injury or property damage This must be set by an certificated installer and any installation or change that is carried out by a non certificated pe...

Page 17: ...he product turn off the power then turn it back on after 1 minute Auxiliary heater This function is only applied to models with Auxiliary Heater function being activated Installer Setting Installer Setting Code Table No Function Function Code Setting Value Remote Controller LCD 0 Mode Override 0 0 Set to Master 1 Set to Slave 1 Ceiling Height Selection 1 1 Standard 2 Low 3 High 4 Super High 2 Grou...

Page 18: ... and method can differ by the indoor unit type 3 Reset the remote controller to use the general operation mode 1 With the MODE button pressed press the RESET button 2 By using the temperature setting button set the indoor unit address Setting range 00 FF 3 After setting the address press the ON OFF button toward the indoor unit 1 time 4 The indoor unit will display the set address to complete the ...

Page 19: ...ase call the installing contractor of your product as warranty service will be provided by them CANADA Service call Number 888 LG Canada 888 542 2623 Numéro pour les appels de service LG Canada 1 888 542 2623 ...

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