LG MFL42803121 Installation Manual Download | Manualshive

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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.

P/NO : MFL42803121

www.lg.com

TYPE: Ceiling Concealed Duct - Low Static

ENGLISH

FRANÇAIS

ESPAÑOL

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Summary of Contents for MFL42803121

Page 1: ...he 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 P NO MFL42803121 www lg com TYPE Ceiling Concealed Duct Low Static ENGLISH FRANÇAIS ESPAÑOL ...

Page 2: ... any tubing run inside a room to prevent sweating that can cause dripping and water damage to wall and floors in moist or uneven locatinons Use a raised concrete pad or concrete blocks provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration in an area with high winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitabl...

Page 3: ... driver o Hexagonal wrench o Gas leak detector o Vacuum pump o Gauge manifold o Owner s manual o Thermometer Safety Precautions 4 Introduction 7 Installation Selection of the best location 8 Ceiling opening dimension and hanging bolt location 9 Indoor Unit Installation 10 Wiring Connection 10 Part name and functions 11 Checking the Drainage 12 Installation of Wired Remote Controller 16 Name and fu...

Page 4: ...ity of injury or damage to properties only Be sure not to do Be sure to follow the instruction n Installation Do not use a defective or under rated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electri cian or an Authorized Service Center Do not disassemble or repair the product There is r...

Page 5: ...ins on the condenser and evaporator For installation always contact the dealer or an Authorized Service Center There is risk of fire electric shock explosion or injury Do not install the product on a defective installation stand It may cause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air condi tioner could fall wit...

Page 6: ...it could damage the neighborhoods It may cause a problem for your neighbors Use two or more people to lift and transport the product Avoid personal injury Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the con denser and evaporator fins could cause product malfunction or inefficient operation 90 n ...

Page 7: ...ote Controlle r TEM P This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that could cause harm to the air conditioner This symbol indicates special notes NOTICE Symbols Used in this Manual Features Low static Duct type ENGLISH Installation Manual 7 ...

Page 8: ...an electrical noise The place where air circulation in the room will be good There should not be any heat source or steam near the unit Confirm the positional relationship between the unit and suspension bolts Installation the ceiling opening to clean the filter or service under the product Selection of the best location A Min B Min Ceiling Service Space A B H 600 23 5 8 600 23 5 8 Top view Unit m...

Page 9: ...an withstand its vibration A place where service can be easily performed CASE 1 POSITION OF SUSPENSION BOLT C E G D A J B M10 Nut M10 SP washer M10 washer X 4 X 4 Local supply X 4 M10 Nut M10 SP washer M10 washer X 4 X 4 Local supply X 4 I F H Drainage hole Drain Pump use CASE 2 POSITION OF CONSOLE BOLT Unit mm inch 7 9 12 15k BTU h 18 24k BTU h Dimension Chassis A B C D E F G H I J 850 900 383 57...

Page 10: ...e that the color of the wires of outdoor unit and the terminal No are the same as those of indoor unit respectively Terminal Block Indoor 1 L1 2 L2 3 A 4 B INDOOR POWER INPUT IDU IDU Outdoor unit Indoor unit Central controller SODU SODU DRY1 DRY2 GND INTERNET 12V Outdoor unit Wiring Connection Indoor Unit Installation CAUTION Tighten the nut and bolt to prevent unit falling WARNING Make sure that ...

Page 11: ...c duct type in case of suction from back side Low static duct type in case of suction from bottom side Air Filter Air outlet Panel Rear Air outlet Air Filter Panel Rear Part name and functions ENGLISH Installation Manual 11 ...

Page 12: ...s the piping connection correctly Wiring Is the wiring connection correctly Lock bolt Is the lock bolt of compressor loosened Insulation Is the unit fully insulated Ground Is the unit safely grounded THERMAL INSULATION TEST AND CHECK Make sure that there is no clearance here Overlap with thermal insulator for piping Thermal insulator for refrigerant pipe Local supply Thermal insulator for piping L...

Page 13: ...hloride pipe inner diometes Ø 25mm 1 inch and pipe fittings The air conditioner uses a drain pump to drain water Use the following procedure to test the drain pump operation Connect the main drain pipe to the exterior and leave it provisionally until the test comes to an end Feed water to the flexible drain hose and check the piping for leakage Be sure to check the drain pump for normal operating ...

Page 14: ...rting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Never fail to equip a leakage breaker where it is wet or moist 9 The following troubles would be caused by voltage drop down Vibration of a magnetic...

Page 15: ...ected by Drafts or dead spots behind doors and in corners Hot or cold air from ducts Radiant heat from sun or appliances Concealed pipes and chimneys Uncontrolled areas such as an outside wall behind the remote controller This remote controller is equipped with a seven segment LED display For proper display of the remote controller LED s the remote controller should be installed properly as shown ...

Page 16: ...h Remove guide groove with long nose Reclamation to the surface of the wall Upper part guide groove Right part guide groove Wall Side Wall Side Wall Side Wall Side Connecting order Separating order 3 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 mak...

Page 17: ...roller do not bury it in the wall It can cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct installation If you install the extension cable in the opposite direction the connector will not...

Page 18: ...t will set not room temperature but outlet air temperature 3 Fan speed button Fan Speed have 3 Steps Middle and Low step is same 4 ON OFF button 5 Opration mode selection button 6 Wireless remote controller receiver Some products don t receive the wireless signals 7 Air flow button 8 Subfunction button 9 Function setting button 10 Ventilation button 11 Reservation 12 Up down left right button To c...

Page 19: ...ntilator linkage Vane selection Console Region selection Etc N A Default N A Default Selection of Master or Slave Selection of Dry Contact Mode Fan continuous operation N A Selection of Ventilator link age Selection of up down side Vane Selection tropical region Spare Master Wired Wireless remote controller Selection of Manual or Auto operation Mode Continuous operation Removall Linkage Removal Up...

Page 20: ...ble to connect with Dry Contact and Central controller at the same time The Master indoor unit is possible to recognize Dry Contact and Central Controller only In case of Central controller and Group controller at the same time it is possible to connect stan dard 2series indoor units or later since Feb 2009 In case of Central controller setting the Central controller can control indoor units after...

Page 21: ...ssible using a PCB Dip Switch h It is possible to connect indoor units since Feb 2009 In the other cases please contact LGE h It can be the cause of malfuctions when there is no setting of master and slave h It is possible to control N indoor units by wired remote controller M units M N 17 Units Set only one indoor unit to Master set the others to Slave Set only one wired remote controller to Mast...

Page 22: ...eparate Fresh Air Intake Unit with standard units Because setting temperature are different h Other than those it is same with Group Control 1 GND Signal 12V LGAP Network System Display Error Message FAU Master FAU Slave Master Master Master Slave FAU Standard Standard FAU FAU Standard Standard FAU FAU Fresh Air Intake Unit Standard Standard Indoor Unit 22 Indoor Unit ...

Page 23: ...It is possible to use wireless remote controller at the same time 4 It is possible to connect with Dry Contact and Central controller at the same time 5 In case of any error occurs at indoor unit display on the wired remote controller 6 There isn t limits of indoor unit function h Maximum 2wired remote controllers can be connected with 1 indoor unit LGAP Network System Display Error Message Master...

Page 24: ... set group control by using below accessories Indoor unit 2 EA Wired remote controller Indoor unit 1 EA Wired remote controller 2EA h PZCWRCG3 cable used for connection h PZCWRC2 cable used for connection Slave Master Master PZCWRC G3 Master Slave PZCWRC 2 24 Indoor Unit ...

Page 25: ...ion code ESP code ESP value If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 1 Function Code ESP value ESP step If you set ESP incorrectly the air conditioner may malfunction This setting must be carried out by a certificated technician This is the function that...

Page 26: ...n by using button and setup ESP value as No 4 and 5 that corresponds each wind flow 6 Press button to exit After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 8 26 Indoor Unit ...

Page 27: ... 0 1 3 93 2 7 87 3 0 11 4 0 15 Static Pressure mmAq in Aq Setting Value 65 10 07 355 6 9 243 0 82 28 70 11 39 402 8 49 299 2 2 77 75 12 01 424 9 79 345 4 2 148 80 13 21 466 11 03 389 5 92 209 0 92 32 85 14 24 502 12 36 436 9 41 332 2 1 74 90 15 04 531 13 34 471 10 8 381 5 29 186 1 01 35 95 16 02 565 14 63 516 12 5 441 7 59 268 1 34 47 100 17 11 604 15 56 549 13 66 482 11 53 407 5 35 188 105 17 99 ...

Page 28: ...28 Indoor Unit ...

Page 29: ......

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