Mitsubishi Electronics MXZ-3B24NA Air Conditioner User Manual


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En-1
n
Do not install the unit by yourself (user).
Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.Consultthedealerfromwhomyoupurchasedthe
unitoraqualiedinstaller.
n
Perform the installation securely referring to the installation manual.
Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.
n
Install the unit securely in a place which can bear the weight of the unit.
If the installation location cannot bear the weight of the unit, the unit could fall
causinginjury.
n
Perform electrical work according to the installation manual and be sure
to use an exclusive circuit. Do not connect other electrical appliances to
the circuit.
Ifthecapacityofthepowercircuitisinsufcientorthereisincompleteelectri
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calwork,itcouldresultinareoranelectricshock.
n
Do not damage the wires by applying excessive pressure with parts or
screws.
Damagedwirescouldcausere.
n
Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failuretodosocouldcauseelectricshock.
n
Usethespeciedwirestoconnecttheindoorandoutdoorunitssecure
-
lyandattachthewiresrmlytotheterminalblockconnectingsections
so the stress of the wires is not applied to the sections.
Incompleteconnectingandsecuringcouldcausere.
n
Donotinstalltheunitinaplacewhereinammablegasmayleak.
Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcausean
explosion.
n
Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
Itcouldcauseareoranelectricshockduetodefectivecontact,defective
insulation, exceeding the permissible current, etc.
n
Besuretousethepartsprovidedorspeciedpartsfortheinstallation
work.
Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterduetoa
re,anelectricshock,theunitfalling,etc.
n
When plugging the power supply plug into the outlet, make sure that
there is no dust, clogging, or loose parts in both the outlet and the plug.
Make sure that the power supply plug is pushed completely into the out-
let.
If there is dust, clogging, or loose parts on the power supply plug or the outlet,
itcouldcauseelectricshockorre.Ifloosepartsarefoundonthepowersup
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ply plug, replace it.
n
Attach the electrical cover to the indoor unit and the service panel to
the outdoor unit securely.
Iftheelectricalcoveroftheindoorunitand/ortheservicepaneloftheout
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doorunitarenotattachedsecurely,itcouldresultinareoranelectric
shockduetodust,water,etc.
n
When installing or relocating the unit, make sure that no substance
otherthanthespeciedrefrigerant(R410A)enterstherefrigerantcir
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cuit.
Any presence of foreign substance such as air can cause abnormal pres
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sure rise or an explosion.
n
Do not discharge the refrigerant into the atmosphere. If refrigerant
leaks during installation, ventilate the room.
Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.Re
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frigerantleakagemaycausesuffocation.Ventilatetheroom.
n
Check that the refrigerant gas does not leak after installation has been
completed.
Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofa
fanheater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.
n
Use appropriate tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22. Not using appropriate
tools or materials and incomplete installation could cause the pipes to burst
orinjury.
n
When pumping down the refrigerant, stop the compressor before dis-
connecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running
andthestopvalveisopen,aircouldbedrawninandthepressureinthere
-
frigeration cycle could become abnormally high. This could cause the pipes
toburstorinjury.
n
When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
If the compressor is started before the refrigerant pipes are connected and
whenthestopvalveisopen,aircouldbedrawninandthepressureinthe
refrigeration cycle could become abnormally high. This could cause the
pipestoburstorinjury.
n
Fastenaarenutwithatorquewrenchasspeciedinthismanual.
Iffastenedtootight,aarenutmaybreakafteralongperiodandcausere
-
frigerantleakage.
n
The unit shall be installed in accordance with national wiring regula-
tions.
n
Ground the unit correctly.
Do not connect the ground to a gas pipe, water pipe, lightning rod or tel
-
ephoneground.Defectivegroundingcouldcauseelectricshock.
1-2.SPECIFICATIONS
1. BEFOREINSTALLATION
1-1.THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
n
Depending on the installation area, install a Ground Fault Interrupt (GFI)
circuit breaker.
IftheGroundFaultInterrupt(GFI)circuitbreakerisnotinstalled,anelectric
shockcouldoccur.
n
Perform the drainage/piping work securely according to the installation
manual.
Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromtheunit,
soakinganddamaginghouseholdgoods.
n
Donottouchtheairinletorthealuminumnsoftheoutdoorunit.
Thiscouldcauseinjury.
n
Do not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it could
causeamalfunction,smokeemission,orre.Also,adviseusertokeepthe
area around the unit clean.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
RequiredToolsforInstallation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
Torque wrench
Wrench(orspanner)
4mm(5/32in.)hexagonal
wrench
Flare tool for R410A
Gauge manifold for R410A
VacuumpumpforR410A
Charge hose for R410A
Pipe cutter with reamer
ENGLISH
CONTENTS
1. BEFORE INSTALLATION ............................................................1
2. OUTDOOR UNIT INSTALLATION ...............................................
4
3.FLARINGWORKANDPIPECONNECTION ...............................
5
4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN .........
5
5. RELOCATION AND MAINTENANCE ..........................................
7
Model
Power supply Pipe length and height difference
*1,*2,*3,*4,*5,*6
RatedVoltage Frequency
Max. pipe length per indoor
unit/formulti-system
Max. height difference
*7
Max. no. of bends per in
-
doorunit/formultisystem
RefrigerantadjustmentA
*8
MXZ-3B24NA
MXZ-3B30NA
MXZ-4B36NA
208/230V 60 Hz 25m(82ft)/70m(230ft) 15m(49ft) 25/70 20g/m(1.08ozeach5ft)
*1Neverusepipeswiththicknesslessthanspecied.Thepressureresist
-
ancewillbeinsufcient.
*2 Use a copper pipe or a copper-alloy seamless pipe.
*3Becarefulnottocrushorbendthepipeduringpipebending.
*4Refrigerantpipebendingradiusmustbe100mm(4in.)ormore.
*5Insulationmaterial:Heatresistingfoamplastic0.045specicgravity
*6Besuretousetheinsulationofspeciedthickness.Excessivethickness
maycauseincorrectinstallationoftheindoorunitandinsufcientthickness
may cause dew drippage.
*7 If the outdoor unit is installed higher than the indoor unit, max. height differ
-
enceisreducedto10m(33ft).
*8Ifpipelengthexceeds40m(131ft),additionalrefrigerant(R410A)charge
is required. (No additional charge is required for pipe length less than
40m(131ft).)
Additionalrefrigerant(m)=A×(pipelength(m)
–
40)
Additionalrefrigerant(ft) =A×
(pipelength(ft)
–
131)
5
JG79A417H01_en.indd 1 10/12/2010 9:19:43 AM
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