Mitsubishi Electronics Air-Conditioners Air Conditioner User Manual


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CONTENTS
1.BEFOREINSTALLATION....................................1
2.INDOORUNITINSTALLATION...........................3
3.OUTDOORUNITINSTALLATION.......................6
4.PURGINGPROCEDURES,LEAKTEST,AND
TESTRUN...........................................................7
5.PUMPINGDOWN................................................7
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.
1-2. SELECTING THE INSTALLATION LOCATION
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
25,35class65mm/
50,60class75mm
holesawTorquewrench
Wrench(orspanner)
4mmhexagonalwrench
FlaretoolforR410A
GaugemanifoldforR410A
VacuumpumpforR410A
ChargehoseforR410A
Pipecutterwithreamer
n
Do not install the unit by yourself (user).
Incompleteinstallationcouldcausefire,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fire,electric
shock,injuryduetotheunitfalling,orleakageof
water.
n
When installing the unit, use appropriate protec-
tive equipment and tools for safety.
Failuretodosocouldcauseinjury.
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
Electrical work should be performed by a quali-
ed, experienced electrician, according to the
installation manual. Be sure to use an exclusive
circuit. Do not connect other electrical appli-
ances to the circuit.
Ifthecapacityofthepowercircuitisinsufcientor
thereisincompleteelectricalwork,itcouldresultin
areoranelectricshock.
n
Earth the unit correctly.
Donotconnecttheearthtoagaspipe,waterpipe,
lightningrodortelephoneearth.Defectiveearthing
couldcauseelectricshock.
n
Do not damage the wires by applying excessive
pressure with parts or screws.
Damagedwirescouldcausereorelectricshock.
n
Be sure to cut off the main power in case of set-
ting 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 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 inter-
mediate connection.
Incompleteconnectingandsecuringcouldcause
re.
n
Do not install the unit in a place where inam-
mable 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de-
fective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 com-
pletely into the outlet.
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supply
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serv-
icepaneloftheoutdoorunitarenotattachedsecurely,
itcouldresultinareoranelectricshockduetodust,
water,etc.
n
When installing, relocating, or servicing the unit,
make sure that no substance other than the
specied refrigerant (R410A) enters the refriger-
ant circuit.
Anypresenceofforeignsubstancesuchasaircan
causeabnormalpressureriseandmayresultin
explosionorinjury.Theuseofanyrefrigerantother
thanthatspecifiedforthesystemwillcauseme-
chanicalfailure,systemmalfunction,orunitbreak-
down.Intheworstcase,thiscouldleadtoaserious
impedimenttosecuringproductsafety.
n
Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, venti-
late the room.
Ifrefrigerantcomesincontactwithare,harmful
gascouldbegenerated.
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incom-
pleteinstallationcouldcausethepipestoburstor
injury.
n
When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant 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refrig-
eration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 compres-
sor.
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refrigerantleakage.
n
The unit shall be installed in accordance with
national wiring regulations.
n
Install an earth leakage breaker depending on
the installation place.
Ifanearthleakagebreakerisnotinstalled,itcould
causeelectricshock.
n
Perform the drainage/piping work securely ac-
cording 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 ani-
mals 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.)
ENGLISH
INDOOR UNIT
• Whereairowisnotblocked.
• Whereairspreadsovertheentireroom.
• Rigidwallwithoutvibration.
• Whereitisnotexposedtodirectsunshine.Donot
exposetodirectsunshinealsoduringtheperiodfol-
lowingunpackingtobeforeuse.
• Whereeasilydrained.
• Atadistance1mormoreawayfromyourTVand
radio.Operationoftheairconditionermayinterfere
withradioorTVreception.Anampliermaybere-
quiredfortheaffecteddevice.
• Inaplaceasfarawayaspossiblefromuorescent
andincandescentlights.
Inordertomaketheinfraredremotecontroloperatetheair-
conditionernormally.Theheatfromthelightsmaycause
deformationortheultravioletmaycausedeterioration.
•
Wheretheairltercanberemovedandreplacedeasily.
REMOTE CONTROLLER
• Whereitiseasytooperateandeasilyvisible.
• Wherechildrencannottouchit.
• Selectthepositionwheretheindoorunitcanreceive
thesignalfromtheremotecontrollerproperly.Check
thatsignalsfromtheremotecontrolleraresurelyre-
ceivedbytheindoorunitfromthatposition(‘beep’or
‘beepbeep’receivingtonesounds).Afterthat,attach
remotecontrollerholdertoapillarorwallandinstall
wirelessremotecontroller.
Note:
Inroomswhereinvertertypefluorescentlampsare
used,thesignalfromthewirelessremotecontrollermay
notbereceived.
OUTDOOR UNIT
• Whereitisnotexposedtostrongwind.
• Whereairowisgoodanddustless.
• Whererainordirectsunlightcanbeavoidedasmuch
aspossible.
• Whereneighboursarenotannoyedbyoperation
soundorhotair.
• Whererigidwallorsupportisavailabletopreventthe
increaseofoperationsoundorvibration.
• Wherethereisnoriskofcombustiblegasleakage.
• Wheninstallingtheunitatahighlevel,besureto
securetheunitlegs.
• Whereitisatleast3mawayfromtheantennaof
TVsetorradio.Operationoftheairconditionermay
interferewithradioorTVreceptioninareaswherere-
ceptionisweak.Anampliermayberequiredforthe
affecteddevice.
• Installtheunithorizontally.
• Pleaseinstallitinanareanotaffectedbysnowfallor
blowingsnow.Inareaswithheavysnow,pleasein-
stallacanopy,apedestaland/orsomebafeboards.
Note:
Itisadvisabletomakeapipingloopnearoutdoorunit
soastoreducevibrationtransmittedfromthere.
Note:
Whenoperatingtheairconditionerinlowoutsidetem-
perature,besuretofollowtheinstructionsdescribed
below.
• Neverinstalltheoutdoorunitinaplacewhere
itsairinlet/outletsidemaybeexposeddirectlyto
wind.
• Topreventexposuretowind,installtheoutdoor
unitwithitsairinletsidefacingthewall.
• Topreventexposuretowind,itisrecommended
toinstallabafeboardontheairoutletsideofthe
outdoorunit.
Avoidthefollowingplacesforinstallationwhereair
conditionertroubleisliabletooccur.
• Whereammablegascouldleak.
• Wherethereismuchmachineoil.
• Whereoilissplashedorwheretheareaislled
withoilysmoke(suchascookingareasandfac-
tories,inwhichthepropertiesofplasticcouldbe
changedanddamaged).
• Saltyplacessuchastheseaside.
• Wheresulfidegasisgeneratedsuchasahot
spring.
• Wherethereishigh-frequencyorwirelessequip-
ment.
• WherethereisemissionofhighlevelsofVOCs,
includingphthalatecompounds,formaldehyde,
etc.,whichmaycausechemicalcracking.
Model names are indicated in 1-3.
Wheninstallingmultiunits,referto
theinstallationmanualofthemulti
unitforoutdoorunitinstallation.
JG79A867H02_en.indd 1 2014/06/25 13:38:50
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