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En-1
1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
• EquipmentcomplyingwithIEC/EN61000-3-12.
1-2. SPECIFICATIONS
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
n Do not install the unit by yourself (user).
Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.Consultthedealerfromwhomyoupurchased
theunitoraqualiedinstaller.
n Perform the installation securely referring to the installation manual.
Incompleteinstallationcouldcause re,electricshock, injuryduetothe
unitfalling,orleakageofwater.
n When installing the unit, use appropriate protective equipment and
tools for safety.
Failuretodosocouldcauseinjury.
n
Install the unit securely in a place which can bear the weight of the unit.
Iftheinstallationlocationcannotbeartheweightoftheunit,theunitcould
fallcausinginjury.
n
Electrical work should be performed by a qualied, experienced electrician,
according to the installation manual. Be sure to use an exclusive circuit.
Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufcient or there is incomplete
electricalwork,itcouldresultinareoranelectricshock.
n Do not damage the wires by applying excessive pressure with parts
or screws.
Damagedwirescouldcausereorelectricshock.
n Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failuretodosocouldcauseelectricshock.
n Use the specied wires to connect the indoor and outdoor units
securely and attach the wires rmly to the terminal block connecting
sections so the stress of the wires is not applied to the sections.
Do
not extend the wires, or use intermediate connection.
Incompleteconnectingandsecuringcouldcausere.
n Do not install the unit in a place where inammable gas may leak.
Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcausean
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.
Itcouldcauseareoranelectricshockduetodefectivecontact,defective
insulation,exceedingthepermissiblecurrent,etc.
n
Be sure to use the parts provided or specied parts for the installation work.
Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterdue
toare,anelectricshock,theunitfalling,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 outlet.
Ifthereisdust,clogging,orloosepartsonthepowersupplyplugorthe
outlet,itcouldcauseelectricshockorre.Ifloosepartsarefoundonthe
powersupplyplug,replaceit.
n Attach the electrical cover to the indoor unit and the service panel
to the outdoor unit securely.
Iftheelectricalcoveroftheindoorunitand/ortheservicepanelofthe
outdoorunitarenotattachedsecurely,itcouldresultinareoranelectric
shockduetodust,water,etc.
n When installing, relocating, or servicing the unit, make sure that no
substance other than the specied refrigerant (R410A) enters the
refrigerant circuit.
Anypresenceofforeignsubstancesuchasaircancauseabnormalpres-
sureriseandmayresultinexplosionorinjury.Theuseofanyrefrigerant
otherthan that specied for thesystem will cause mechanical failure,
systemmalfunction,orunitbreakdown.Intheworstcase,thiscouldlead
toaseriousimpedimenttosecuringproductsafety.
n Do not discharge the refrigerant into the atmosphere. If refrigerant
leaks during installation, ventilate the room.
Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.
n Check that the refrigerant gas does not leak after installation has
been completed.
Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofa
fanheater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.
n Use appropriate tools and piping materials for installation.
ThepressureofR410Ais1.6timesmorethanR22.Notusingappropriatetools
ormaterialsandincompleteinstallationcouldcausethepipestoburstorinjury.
n When pumping down the refrigerant, stop the compressor before
disconnecting the refrigerant pipes.
Iftherefrigerantpipesaredisconnectedwhilethecompressorisrunning
andthestopvalveisopen,aircouldbedrawninandthepressureinthe
refrigeration cycle could become abnormally high. This could cause the
pipestoburstorinjury.
n When installing the unit, securely connect the refrigerant pipes
before starting the compressor.
Ifthecompressorisstartedbeforetherefrigerantpipesareconnected
andwhenthestopvalveisopen,aircouldbedrawninandthepressure
in the refrigeration cycle could become abnormally high. This could cause
thepipestoburstorinjury.
n Fasten a are nut with a torque wrench as specied in this manual.
Iffastenedtootight,aarenutmaybreakafteralongperiodandcause
refrigerantleakage.
n
The unit shall be installed in accordance with national wiring regulations.
n Earth the unit correctly.
Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortel-
ephoneearth.Defectiveearthingcouldcauseelectricshock.
n Be sure to install an earth leakage breaker.
Failuretoinstallanearthleakagebreakermayresultinelectricshockorre.
n
Perform the drainage/piping work securely according to the installation manual.
Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromtheunit,
soakinganddamaginghouseholdgoods.
n Do not touch the air inlet or the aluminum ns of the outdoor unit.
Thiscouldcauseinjury.
n Do not install the outdoor unit where small animals may live.
Ifsmallanimalsenterandtouchtheelectricpartsinsidetheunit,itcould
causeamalfunction,smokeemission,orre.Also,adviseusertokeep
the area around the unit clean.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
*1 Connecttothepowerswitchwhichhasagapof3mmormorewhenopento
interruptthesourcepowerphase.(Whenthepowerswitchisshutoff,itmust
interruptallphases.)
*2 Usewiresinconformitywithdesign60245IEC57. Usetheindoor/outdoor
connecting wire in conformity with the wire specications specied in the
installation manual of the indoor unit.
*3 Neverusepipeswiththicknesslessthanspecied.Thepressureresistance
willbeinsufcient.
*4 Useacopperpipeoracopper-alloyseamlesspipe.
*5 Becarefulnottocrushorbendthepipeduringpipebending.
*6 Refrigerantpipebendingradiusmustbe100mmormore.
*7 Insulationmaterial:Heatresistingfoamplastic0.045specicgravity
*8 Besuretousetheinsulationofspeciedthickness.Excessivethicknessmay
causeincorrectinstallationoftheindoorunitandinsufcientthicknessmay
causedewdrippage.
*
9
If the outdoor unit is installed higher than the indoor unit, max. height dif-
ferenceisreducedto10m.
*
10
Ifpipelengthexceeds30m,additionalrefrigerant(R410A)chargeisrequired.
(for4E80VAD)
Additionalrefrigerant=A×(pipelength(m)-30)
Ifpipelengthexceeds5m,additionalrefrigerant(R410A)chargeisrequired.
(for5E100VAD)
Additionalrefrigerant=A×(pipelength(m)-5)
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
Torquewrench
Wrench(orspanner)
4mmhexagonalwrench
FlaretoolforR410A
GaugemanifoldforR410A
VacuumpumpforR410A
ChargehoseforR410A
Pipecutterwithreamer
ENGLISH
CONTENTS
1.BEFOREINSTALLATION ............................................................1
2.OUTDOORUNITINSTALLATION ...............................................4
3.FLARINGWORKANDPIPECONNECTION ...............................5
4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN .........6
5.PUMPINGDOWN ........................................................................ 7
Model
Powersupply*1 Wirespecications*2 Pipelengthandheightdifference
*3,*4,*5,*6,*7,*8
Rated
Voltage
Fre-
quency
Breaker
capacity
Power
supply
Indoor/
outdoor con-
nectingwire
Max.pipelength
perindoorunit/
for multi-system
Max.height
difference
*9
Max.no.ofbends
perindoorunit/
for multi system
Refrigerant
adjustment
A*10
MXZ-4E80VAD
230V 50Hz 25A
3-core
2.5mm
2
4-core
1.0/1.5mm
2
25m/70m
15m
25/70
20g/m
25m/80m 25/80
MXZ-5E100VAD
WG79A696H02_en.indd 1 2016/04/21 14:46:35
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