
P/NO : MFL67798033INSTALLATION MANUALOriginal instruction AIRCONDITIONERwww.lg.comPlease read this installation manual completely before installing th
10ENGLISHFlaring work- Carry out flaring work using flaring tool as shown below.Firmly hold copper tube in a bar(or die) as indicated dimension in the
11ENGLISH1 Always use the nitrogen.(not use oxygen, carbon dioxide, anda Chevron gas): Please use the following nitrogen pressure0.02MPa Oxygen – Pro
12ENGLISHPIPE CONNECTIONS BETWEENINDOOR AND OUTDOOR UNITU4 Chassis (1FAN model)Connect the refrigerant pipe, and after the refrigerant leakage inspec-
13ENGLISHTotal pipe length = A+B+C+D+a+b+c+d+e ≤ 150mLLongest pipe length Equivalent pipe length(*)A+B+C+D+e ≤ 80m A+B+C+D+e ≤ 100mlLongest pipe lengt
14ENGLISHWARNING• It is recommended that difference of piping length for pipesconnected to the Indoor Unit is minimized. Performance differ-ence betwe
15ENGLISHWARNING• Regulation for refrigerant leakage: the amount of refrigerant leakage should satisfy the followingequation for human safety.If the
16ENGLISH• When the number of indoor units to be connected to the branchpipes is less than the number of branch pipes available for connec-tion then c
17ENGLISH[unit:mm]Leak testLeak test should be made by pressurizing nitrogen gas to 3.8MPa(38.7kgf/cm2). If the pressure does not drop for 24 hours, t
18ENGLISHNOTE!Always add an appropriate amount of refrigerant. (For the refrigerant addi-tional charge) Too much or too little refrigerant will cause
19ENGLISHABEBIABDC1m1mDFGBGDBHIJAⒶ SleeveⒷ Heat insulating materialⒸ LaggingⒹ Caulking materialⒺ BandⒻ Waterproofing layerⒼ Sleeve with edgeⒽ Lagging
2ENGLISH• Do not cool excessively indoors. This may be harmful for your healthand may consume more electricity.• Block sunlight with blinds or curta
20ENGLISHCAUTIONWhen the 400 volt power supply is applied to “N” phase by mistake,check damaged parts in control box and replace them.!Side panelWARNI
21ENGLISH- Use a separate power supply for the Outdoor Unit and Indoor Unit.- Bear in mind ambient conditions (ambient temperature,direct sun-light, r
22ENGLISH- About more information of IO Module, please refer to IO Modulemanual.CAUTIONBe sure to turn off outdoor unit power before installation.!++※
23ENGLISHExample) Group number setting 1stnumber indicate the group number2nd number point out indoor unit numberSODU.B SODU.A IDU.B IDU.A CEN.B CEN.A
24ENGLISHCAUTION• Request installer to set the function during installation. • If ODU RPM changes, cooling capacity may go down.!Master unit PCB DIP s
25ENGLISHDisplay Title Cause of ErrorIndoor unit related error0 1 -Air temperature sensor of indoor unitAir temperature sensor of indoor unit is open
26ENGLISHDisplay Title Cause of Error5 0 *Omitting connection of R, S, T power of Outdoor Unit Omitting connection of outdoor unit5 1 *Excessive capac
27ENGLISHCalculate minimum room capacityCalculate room capacity by regarding a portion as one room or thesmaller room.- With partition and with openin
28ENGLISHCAUTION• Air conditioners should not be installed in areas wherecorrosive gases, such as acid or alkaline gas, are produced.• Do not install
[Representative] LG Electronics European Shared Service Center B.V.Krijgsman 1, 1186 DM Amstelveen, The Netherlands[Manufacturer] LG Electronics Inc.
3• Do not reconstruct to change the settings ofthe protection devices.- If the pressure switch, thermal switch, orother protection device is shorted a
4ENGLISH• Install and insulate the drain hose to ensure that wateris drained away properly based on the installation man-ual.- A bad connection may c
5ENGLISHThe foundation must be level evenOutdoor unit foundation workAvoid short circuits and ensure sufficient space is allowed for serviceInstallatio
6ENGLISHAir inlet grille700[Unit : mm]Turn the air outlet side toward thebuilding's wall, fence or windbreak screen.WARNINGFix the outdoor unit f
7ENGLISHIn case of obstacles on the discharge side1. Stand alone installationa500 or lessmore1,000 ora2. Collective installation1,000 or more100 ormor
8ENGLISHSeasonal wind and cautions in winter• Sufficient measures are required in a snow area or severe cold areain winter so that product can be oper
9ENGLISH• Fix the unit tightly with bolts as shown below so that unit will not falldown due to earthquake or gust.• Use the H-beam support as a base s
Comments to this Manuals