Fujitsu AOTG30KMTC Installation guide

Brand: Fujitsu

Model: AOTG30KMTC

Type: Installation guide

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1. SAFETY PRECAUTIONS

• Besuretoreadthismanualcarefullybeforeinstallation.

• Thewarningsandprecautionsindicatedinthismanualcontainimportantinformation

pertainingtoyoursafety.Besuretoobservethem.

• Handthismanual,togetherwiththeoperatingmanual,tothecustomer.Requestthe

customertokeepthemonhandforfutureuse,suchasforrelocatingorrepairingthe

unit.

WARNING

Indicatesapotentiallyorimminentlyhazardoussituationwhich,

ifnotavoided,couldresultindeathorseriousinjury.

CAUTION

Indicatesapotentiallyhazardoussituationthatmayresultin

minorormoderateinjuryordamagetoproperty.

WARNING

Toavoidgettinganelectricshock,nevertouchtheelectricalcomponentssoonafterthe

powersupplyhasbeenturnedoff.Afterturningoffthepower,alwayswait10minutesor

morebeforeyoutouchtheelectricalcomponents.

Installationofthisproductmustbedonebyexperiencedservicetechniciansor

professionalinstallersonlyinaccordancewiththismanual.Installationby

non-professionalorimproperinstallationoftheproductmaycauseseriousaccidents

suchasinjury,waterleakage,electricshock,orre.Iftheproductisinstalledin

disregardoftheinstructionsinthismanual,itwillvoidthemanufacturer’swarranty.

Donotturnonthepoweruntilallworkhasbeencompleted.Turningonthepowerbefore

theworkiscompletedcancauseseriousaccidentssuchasanelectricshockorre.

Ifrefrigerantleakswhenyouareworking,ventilatethearea.Iftheleakingrefrigerantis

exposedtoadirectame,itmayproduceatoxicgas.

Installationmustbeperformedinaccordancewithregulations,codes,orstandardsfor

electricalwiringandequipmentineachcountry,region,ortheinstallingplace.

Donotusethisequipmentwithairoranyotherunspeciedrefrigerantintherefrigerant

lines.Excesspressurecancausearupture.

Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybeforeyourun

thecompressor.

Donotoperatethecompressorundertheconditionofrefrigerantpipingnotattached

properlywith3-wayvalveopen.Thismaycauseabnormalpressureintherefrigeration

cyclethatleadstobreakageandeveninjury.

Wheninstallingandrelocatingtheairconditioner,donotmixgasesotherthanthe

speciedrefrigerant(R32)toentertherefrigerantcycle.

Ifairorothergasenterstherefrigerantcycle,thepressureinsidethecyclewillriseto

anabnormallyhighvalueandcausebreakage,injury,etc.

Donotremovetheconnectionpipewhilethecompressorisinoperationwith3-way

valveopen.

Thismaycauseabnormalpressureintherefrigerationcyclethatleadstobreakageand

eveninjury.

Toconnecttheindoorandoutdoorunit,useairconditionerpipingandcablesavailable

locallyasstandardparts.Thismanualdescribesproperconnectionsusingsuch

installationset.

Donotmodifypowercable,useextensioncableorbranchwiring.Improperusemay

causeelectricshockorrebypoorconnection,insufcientinsulationorovercurrent.

Donotpurgetheairwithrefrigerantsbutuseavacuumpumptovacuumtheinstallation.

Thereisnoextrarefrigerantintheoutdoorunitforairpurging.

UseavacuumpumpforR32orR410Aexclusively.

Usingthesamevacuumpumpfordifferentrefrigerantsmaydamagethevacuumpump

ortheunit.

UseacleangaugemanifoldandcharginghoseforR32orR410Aexclusively.

Donotusemeanstoacceleratethedefrostingprocessortoclean,otherthanthose

recommendedbythemanufacturer.

Theapplianceshallbestoredinaroomwithoutcontinuouslyoperatingignitionsources

(forexample:openames,anoperatinggasapplianceoranoperatingelectricheater.

Donotpierceorburn.

Beawarethatrefrigerantsmaynotcontainanodour.

Donotmodifythisunit,suchasopeningaholeinthecabinet.

Duringthepump-downoperation,makesurethatthecompressoristurnedoffbefore

youremovetherefrigerantpiping.

Donotremovetheconnectionpipewhilethecompressorisinoperationwith3-way

valveopen.

Thismaycauseabnormalpressureintherefrigerationcyclethatleadstobreakageand

eveninjury.

Thisapplianceisnotintendedforusebypersons(includingchildren)withreduced

physical,sensoryormentalcapabilities,orlackofexperienceandknowledge,unless

theyhavebeengivensupervisionorinstructionconcerninguseoftheappliancebya

personresponsiblefortheirsafety.Childrenshouldbesupervisedtoensurethatthey

donotplaywiththeappliance.

Contents

1. SAFETYPRECAUTIONS............................................................................................1

2. PRODUCTSPECIFICATION....................................................................................... 4

2.1. Installationtools.................................................................................................4

2.2. Accessories........................................................................................................4

2.3. Piperequirements..............................................................................................4

2.4. Electricalrequirements.......................................................................................5

2.5. Additionalchargeamount..................................................................................5

2.6. Operatingrange.................................................................................................5

3. INSTALLATIONWORK............................................................................................... 5

3.1. Installationdimensions.......................................................................................6

3.2. Transportingtheunit..........................................................................................6

3.3. Mountingtheunit................................................................................................7

3.4. Draininstallation.................................................................................................7

3.5. Pipeinstallation..................................................................................................7

3.6. Sealingtest........................................................................................................8

3.7. Vacuumprocessanddryingprocess.................................................................8

3.8. Additionalcharging.............................................................................................9

3.9. Electricalwiring..................................................................................................9

3.10.Demandcontrol................................................................................................10

3.11.Protectionfortheintrusionofsmallanimals....................................................11

4. TESTRUN.................................................................................................................12

5. FINISHING.................................................................................................................12

5.1. Installinginsulation...........................................................................................12

6. PUMPDOWN............................................................................................................12

AIRCONDITIONER

OutdoorUnit

INSTALLATION MANUAL

PARTNo.9374995639-02

Forauthorizedservicepersonnelonly.

R32

R32.

9374995639-02_IM.indd 1 7/8/2019 08:56:56

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2-2.Work

• Priortobeginningworkonsystemscontainingammablerefrigerants,safety

checksarenecessarytoensurethattheriskofignitionisminimised.Forrepairto

therefrigeratingsystem,theprecautionsin2-2to2-8shallbecompliedwithpriorto

conductingworkonthesystem.

• Workshallbeundertakenunderacontrolledproceduresoastominimizetheriskof

aammablegasorvapourbeingpresentwhiletheworkisbeingperformed.

• Allmaintenancestaffandothersworkinginthelocalareashallbeinstructedonthe

natureofworkbeingcarriedout.

• Workinconnedspacesshallbeavoided.

• Theareaaroundtheworkspaceshallbesectionedoff.

• Ensurethattheconditionswithintheareahavebeenmadesafebycontrolofam-

mablematerial.

2-3.Checkingforpresenceofrefrigerant

• Theareashallbecheckedwithanappropriaterefrigerantdetectorpriortoanddur-

ingwork,toensurethetechnicianisawareofpotentiallyammableatmospheres.

• Ensurethattheleakdetectionequipmentbeingusedissuitableforusewitham-

mablerefrigerants,i.e.nonsparking,adequatelysealedorintrinsicallysafe.

2-4.Presenceofreextinguisher

• Ifanyhotworkistobeconductedontherefrigerationequipmentoranyassociated

parts,appropriatereextinguishingequipmentshallbeavailableathand.

• HaveadrypowderorCO

reextinguisheradjacenttothechargingarea.

2-5.Noignitionsources

• Nopersoncarryingoutworkinrelationtoarefrigerationsystemwhichinvolves

exposinganypipeworkthatcontainsorhascontainedammablerefrigerantshall

useanysourcesofignitioninsuchamannerthatitmayleadtotheriskofreor

explosion.

• Allpossibleignitionsources,includingcigarettesmoking,shouldbekeptsufciently

farawayfromthesiteofinstallation,repairing,removinganddisposal,duringwhich

ammablerefrigerantcanpossiblybereleasedtothesurroundingspace.

• Priortoworktakingplace,theareaaroundtheequipmentistobesurveyedtomake

surethattherearenoammablehazardsorignitionrisks.“NoSmoking”signsshall

bedisplayed.

2-6.Ventilatedarea

• Ensurethattheareaisintheopenorthatitisadequatelyventilatedbeforebreaking

intothesystemorconductinganyhotwork.

• Adegreeofventilationshallcontinueduringtheperiodthattheworkiscarriedout.

• Theventilationshouldsafelydisperseanyreleasedrefrigerantandpreferablyexpel

itexternallyintotheatmosphere.

2-7.Checkstotherefrigerationequipment

• Whereelectricalcomponentsarebeingchanged,theyshallbetforthepurpose

andtothecorrectspecication.

• Atalltimesthemanufacturer’smaintenanceandserviceguidelinesshallbefollowed.

• Ifindoubtconsultthemanufacturer’stechnicaldepartmentforassistance.

• Thefollowingchecksshallbeappliedtoinstallationsusingammablerefrigerants.

-Thechargesizeisinaccordancewiththeroomsizewithinwhichtherefrigerant

containingpartsareinstalled.

-Theventilationmachineryandoutletsareoperatingadequatelyandarenot

obstructed.

-Ifanindirectrefrigeratingcircuitisbeingused,thesecondarycircuitshallbe

checkedforthepresenceofrefrigerant.

-Markingtotheequipmentcontinuestobevisibleandlegible.Markingsandsigns

thatareillegibleshallbecorrected.

-Refrigerationpipeorcomponentsareinstalledinapositionwheretheyare

unlikelytobeexposedtoanysubstancewhichmaycorroderefrigerantcontain-

ingcomponents,unlessthecomponentsareconstructedofmaterialswhichare

inherentlyresistanttobeingcorrodedoraresuitablyprotectedagainstbeingso

corroded.

2-8.Checkstoelectricaldevices

• Repairandmaintenancetoelectricalcomponentsshallincludeinitialsafetychecks

andcomponentinspectionprocedures.

• Ifafaultexiststhatcouldcompromisesafety,thennoelectricalsupplyshallbecon-

nectedtothecircuituntilitissatisfactorilydealtwith.

• Ifthefaultcannotbecorrectedimmediatelybutitisnecessarytocontinueopera-

tion,anadequatetemporarysolutionshallbeused.

• Thisshallbereportedtotheowneroftheequipmentsoallpartiesareadvised.

• Initialsafetychecksshallinclude.

-Thatcapacitorsaredischarged:thisshallbedoneinasafemannertoavoidpos-

sibilityofsparking.

-Thattherenoliveelectricalcomponentsandwiringareexposedwhilecharging,

recoveringorpurgingthesystem.

-Thatthereiscontinuityofearthbonding.

CAUTION

Fortheairconditionertoworkappropriately,installitaswritteninthismanual.

Thisunitmustbeinstalledbyqualiedpersonnelwithacapacitycerticationofhandling

refrigerantuids.Refertoregulationandlawsinuseoninstallationplace.

Installtheunitbyfollowinglocalcodesandregulationsinforceintheplaceof

installation,andtheinstructionsprovidedbymanufacturer.

Thisunitispartofasetconstitutinganairconditioner.Theunitmustnotbeinstalled

aloneorbeinstalledwithdevicenotauthorizedbythemanufacturer.

Wheninstallingpipesshorterthan5m,soundoftheoutdoorunitmaybetransferredto

theindoorunit,whichmaycauselargeoperatingorabnormalsound.

Alwaysuseaseparatepowersupplylineprotectedbyacircuitbreakeroperatingonall

wireswithadistancebetweencontactof3mmforthisunit.

Toprotectthepersons,earth(ground)theunitcorrectly,andusethepowercable

combinedwithanEarthLeakageCircuitBreaker(ELCB).

Theunitsarenotexplosionproofandthereforeshouldnotbeinstalledinexplosive

atmosphere.

Thisunitcontainsnouser-serviceableparts.Alwaysconsultauthorizedservice

personneltorepairs.

Whenmovingorrelocatingtheairconditioner,consultexperiencedservicetechnicians

fordisconnectionandreinstallationoftheunit.

Childrenshouldbemonitoredtoensuretheydonotplaywiththedevice.

Donottouchthealuminumnsofheatexchangerbuilt-intheindoororoutdoorunitto

avoidpersonalinjurywhenyouinstallormaintaintheunit.

Donotplaceanyotherelectricalproductsorhouseholdbelongingsunderindoorunitor

outdoorunit.Drippingcondensationfromtheunitmightgetthemwet,andmaycause

damageormalfunctionofyourproperty.

Precautions for using R32 refrigerant

Thebasicinstallationworkproceduresarethesameasconventionalrefrigerant(R410A,

R22)models.

However,paycarefulattentiontothefollowingpoints:

WARNING

Sincetheworkingpressureis1.6timeshigherthanthatofrefrigerantR22models,

someofthepipingandinstallationandservicetoolsarespecial.(See“2.1.Installation

tools”.)

Especially,whenreplacingarefrigerantR22modelwithanewrefrigerantR32model,

alwaysreplacetheconventionalpipingandarenutswiththeR32andR410Apiping

andarenutsontheoutdoorunitside.

ForR32andR410A,thesamearenutontheoutdoorunitsideandpipecanbeused.

ModelsthatuserefrigerantR32andR410Ahaveadifferentchargingportthreaddiam-

etertopreventerroneouschargingwithrefrigerantR22andforsafety.Therefore,check

beforehand.[ThechargingportthreaddiameterforR32andR410Ais1/2inch.]

BemorecarefulthanR22sothatforeignmatter(oil,water,etc.)doesnotenterthepiping.

Also,whenstoringthepiping,securelysealtheopeningbypinching,taping,etc.(Han-

dlingofR32issimilartoR410A.)

CAUTION

1.Installation(Space)

• Thattheinstallationofpipe-workshallbekepttoaminimum.

• Thatpipe-workshallbeprotectedfromphysicaldamage.

• Thatcompliancewithnationalgasregulationsshallbeobserved.

• Thatmechanicalconnectionsshallbeaccessibleformaintenancepurposes.

• Incasesthatrequiremechanicalventilation,ventilationopeningsshallbekeptclear

ofobstruction.

• Whendisposingoftheproductisused,bebasedonnationalregulations,properly

processed.

2.Servicing

2-1.Servicepersonnel

• Anypersonwhoisinvolvedwithworkingonorbreakingintoarefrigerantcircuit

shouldholdacurrentvalidcerticatefromanindustry-accreditedassessment

authority,whichauthorizestheircompetencetohandlerefrigerantssafelyinaccord-

ancewithanindustryrecognisedassessmentspecication.

• Servicingshallonlybeperformedasrecommendedbytheequipmentmanufacturer.

Maintenanceandrepairrequiringtheassistanceofotherskilledpersonnelshallbe

carriedoutunderthesupervisionofthepersoncompetentintheuseofammable

refrigerants.

• Servicingshallbeperformedonlyasrecommendedbythemanufacturer.

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3.Repairstosealedcomponents

• Duringrepairstosealedcomponents,allelectricalsuppliesshallbedisconnected

fromtheequipmentbeingworkeduponpriortoanyremovalofsealedcovers,etc.

• Ifitisabsolutelynecessarytohaveanelectricalsupplytoequipmentduringservic-

ing,thenapermanentlyoperatingformofleakdetectionshallbelocatedatthemost

criticalpointtowarnofapotentiallyhazardoussituation.

• Particularattentionshallbepaidtothefollowingtoensurethatbyworkingonelec-

tricalcomponents,thecasingisnotalteredinsuchawaythatthelevelofprotection

isaffected.

• Thisshallincludedamagetocables,excessivenumberofconnections,terminals

notmadetooriginalspecication,damagetoseals,incorrectttingofglands,etc.

• Ensurethatapparatusismountedsecurely.

• Ensurethatsealsorsealingmaterialshavenotdegradedsuchthattheynolonger

servethepurposeofpreventingtheingressofammableatmospheres.

• Replacementpartsshallbeinaccordancewiththemanufacturer’sspecications.

NOTE:Theuseofsiliconsealantmayinhibittheeffectivenessofsometypesofleak

detectionequipment.

Intrinsicallysafecomponentsdonothavetobeisolatedpriortoworkingonthem.

4.Repairtointrinsicallysafecomponents

• Donotapplyanypermanentinductiveorcapacitanceloadstothecircuitwithout

ensuringthatthiswillnotexceedthepermissiblevoltageandcurrentpermittedfor

theequipmentinuse.

• Intrinsicallysafecomponentsaretheonlytypesthatcanbeworkedonwhilelivein

thepresenceofaammableatmosphere.

• Thetestapparatusshallbeatthecorrectrating.

• Replacecomponentsonlywithpartsspeciedbythemanufacturer.

• Otherpartsmayresultintheignitionofrefrigerantintheatmospherefromaleak.

5.Cabling

• Checkthatcablingwillnotbesubjecttowear,corrosion,excessivepressure,vibra-

tion,sharpedgesoranyotheradverseenvironmentaleffects.

• Thecheckshallalsotakeintoaccounttheeffectsofagingorcontinualvibration

fromsourcessuchascompressorsorfans.

6.Detectionofammablerefrigerants

• Undernocircumstancesshallpotentialsourcesofignitionbeusedinthesearching

forordetectionofrefrigerantleaks.

• Ahalidetorch(oranyotherdetectorusinganakedame)shallnotbeused.

7.Leakdetectionmethods

• Electronicleakdetectorsshallbeusedtodetectammablerefrigerants,butthe

sensitivitymaynotbeadequate,ormayneedre-calibration.(Detectionequipment

shallbecalibratedinarefrigerant-freearea.)

• Ensurethatthedetectorisnotapotentialsourceofignitionandissuitableforthe

refrigerantused.

• LeakdetectionequipmentshallbesetatapercentageoftheLFLoftherefrigerant

andshallbecalibratedtotherefrigerantemployedandtheappropriatepercentage

ofgas(25%maximum)isconrmed.

• Leakdetectionuidsaresuitableforusewithmostrefrigerantsbuttheuseof

detergentscontainingchlorineshallbeavoidedasthechlorinemayreactwiththe

refrigerantandcorrodethecopperpipe-work.

• Ifaleakissuspected,allnakedamesshallberemoved/extinguished.

• Ifaleakageofrefrigerantisfoundwhichrequiresbrazing,alloftherefrigerantshall

berecoveredfromthesystem,orisolated(bymeansofshutoffvalves)inapartof

thesystemremotefromtheleak.

Oxygenfreenitrogen(OFN)shallthenbepurgedthroughthesystembothbefore

andduringthebrazingprocess.

8.Removalandevacuation

• Whenbreakingintotherefrigerantcircuittomakerepairs–orforanyother

purpose–conventionalproceduresshallbeused.

However,itisimportantthatbestpracticeisfollowedsinceammabilityisaconsid-

eration.

Thefollowingprocedureshallbeadheredto:

• removerefrigerant

• purgethecircuitwithinertgas

• evacuate

• purgeagainwithinertgas

• openthecircuitbycuttingorbrazing

• Therefrigerantchargeshallberecoveredintothecorrectrecoverycylinders.

• Thesystemshallbe“ushed”withOFNtorendertheunitsafe.

• Thisprocessmayneedtoberepeatedseveraltimes.

• Compressedairoroxygenshallnotbeusedforthistask.

• FlushingshallbeachievedbybreakingthevacuuminthesystemwithOFNand

continuingtolluntiltheworkingpressureisachieved,thenventingtoatmosphere,

andnallypullingdowntoavacuum.

• Thisprocessshallberepeateduntilnorefrigerantiswithinthesystem.

• WhenthenalOFNchargeisused,thesystemshallbeventeddowntoatmos-

phericpressuretoenableworktotakeplace.

• Thisoperationisabsolutelyvitalifbrazingoperationsonthepipeworkaretotakeplace.

• Ensurethattheoutletforthevacuumpumpisnotclosetoanyignitionsourcesand

thereisventilationavailable.

9.Chargingprocedures

• Inadditiontoconventionalchargingprocedures,thefollowingrequirementsshallbe

followed.

-Ensurethatcontaminationofdifferentrefrigerantsdoesnotoccurwhenusing

chargingequipment.

-Hosesorlinesshallbeasshortaspossibletominimizetheamountofrefrigerant

containedinthem.

-Cylindersshallbekeptupright.

-Ensurethattherefrigerationsystemisearthedpriortochargingthesystemwith

refrigerant.

-Labelthesystemwhenchargingiscomplete(ifnotalready).

-Extremecareshallbetakennottooverlltherefrigerationsystem.

• PriortorechargingthesystemitshallbepressuretestedwithOFN.

• Thesystemshallbeleaktestedoncompletionofchargingbutpriortocommissioning.

• Afollowupleaktestshallbecarriedoutpriortoleavingthesite.

10.Decommissioning

• Beforecarryingoutthisprocedure,itisessentialthatthetechnicianiscompletely

familiarwiththeequipmentandallitsdetails.

• Itisrecommendedgoodpracticethatallrefrigerantsarerecoveredsafely.

• Priortothetaskbeingcarriedout,anoilandrefrigerantsampleshallbetakenin

caseanalysisisrequiredpriortore-useofreclaimedrefrigerant.

• Itisessentialthatelectricalpowerisavailablebeforethetaskiscommenced.

a)Becomefamiliarwiththeequipmentanditsoperation.

b)Isolatesystemelectrically.

c)Beforeattemptingtheprocedureensurethat:

• mechanicalhandlingequipmentisavailable,ifrequired,forhandlingrefriger-

antcylinders;

• allpersonalprotectiveequipmentisavailableandbeingusedcorrectly;

• therecoveryprocessissupervisedatalltimesbyacompetentperson;

• recoveryequipmentandcylindersconformtotheappropriatestandards.

d)Pumpdownrefrigerantsystem,ifpossible.

e)Ifavacuumisnotpossible,makeamanifoldsothatrefrigerantcanberemoved

fromvariouspartsofthesystem.

f)Makesurethatcylinderissituatedonthescalesbeforerecoverytakesplace.

g)Starttherecoverymachineandoperateinaccordancewithmanufacturer’s

instructions.

h)Donotoverllcylinders.(Nomorethan80%volumeliquidcharge).

i)Donotexceedthemaximumworkingpressureofthecylinder,eventemporarily.

j)Whenthecylindershavebeenlledcorrectlyandtheprocesscompleted,make

surethatthecylindersandtheequipmentareremovedfromsitepromptlyand

allisolationvalvesontheequipmentareclosedoff.

k)Recoveredrefrigerantshallnotbechargedintoanotherrefrigerationsystem

unlessithasbeencleanedandchecked.

11.Labelling

• Equipmentshallbelabelledstatingthatithasbeende-commissionedandemptied

ofrefrigerant.

• Thelabelshallbedatedandsigned.

• Ensurethattherearelabelsontheequipmentstatingtheequipmentcontainsam-

mablerefrigerant.

12.Recovery

• Whenremovingrefrigerantfromasystem,eitherforservicingordecommissioning,

itisrecommendedgoodpracticethatallrefrigerantsareremovedsafely.

• Whentransferringrefrigerantintocylinders,ensurethatonlyappropriaterefrigerant

recoverycylindersareemployed.

• Ensurethatthecorrectnumberofcylindersforholdingthetotalsystemchargeare

available.

• Allcylinderstobeusedaredesignatedfortherecoveredrefrigerantandlabelledfor

thatrefrigerant(i.e.specialcylindersfortherecoveryofrefrigerant).

• Cylindersshallbecompletewithpressurereliefvalveandassociatedshut-offvalves

ingoodworkingorder.

• Emptyrecoverycylindersareevacuatedand,ifpossible,cooledbeforerecovery

occurs.

• Therecoveryequipmentshallbeingoodworkingorderwithasetofinstructions

concerningtheequipmentthatisathandandshallbesuitablefortherecoveryof

ammablerefrigerants.

• Inaddition,asetofcalibratedweighingscalesshallbeavailableandingoodwork-

ingorder.

• Hosesshallbecompletewithleak-freedisconnectcouplingsandingoodcondition.

• Beforeusingtherecoverymachine,checkthatitisinsatisfactoryworkingorder,has

beenproperlymaintainedandthatanyassociatedelectricalcomponentsaresealed

topreventignitionintheeventofarefrigerantrelease.

Consultmanufacturerifindoubt.

• Therecoveredrefrigerantshallbereturnedtotherefrigerantsupplierinthecorrect

recoverycylinder,andtherelevantWasteTransferNotearranged.

• Donotmixrefrigerantsinrecoveryunitsandespeciallynotincylinders.

• Ifcompressorsorcompressoroilsaretoberemoved,ensurethattheyhavebeen

evacuatedtoanacceptableleveltomakecertainthatammablerefrigerantdoes

notremainwithinthelubricant.

• Theevacuationprocessshallbecarriedoutpriortoreturningthecompressortothe

suppliers.

• Onlyelectricheatingtothecompressorbodyshallbeemployedtoacceleratethis

process.

• Whenoilisdrainedfromasystem,itshallbecarriedoutsafely.

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Explanationofsymbolsdisplayedontheindoorunitoroutdoorunit.

WARNING

Thissymbolshowsthatthisequipmentusesaammable

refrigerant.

Iftherefrigerantisleaked,togetherwithanexternaligni-

tionsource,thereisapossibilityofignition.

CAUTION

ThissymbolshowsthattheOperationManualshouldbe

readcarefully.

CAUTION

Thissymbolshowsthataservicepersonnelshouldbe

handlingthisequipmentwithreferencetotheInstallation

Manual.

CAUTION

Thissymbolshowsthatthereisinformationincludedinthe

OperationManualand/orInstallationManual.

2. PRODUCT SPECIFICATION

2.1. Installation tools

WARNING

ToinstallaunitthatusesR32refrigerant,usededicatedtoolsandpipingmaterialsthat

havebeenmanufacturedspecicallyforR32(R410A)use.BecausethepressureofR32

refrigerantisapproximately1.6timeshigherthanR22,failuretousededicatedpiping

materialorimproperinstallationcancauseruptureorinjury.Furthermore,itcancause

seriousaccidentssuchaswaterleakage,electricshock,orre.

Donotuseavacuumpumporrefrigerantrecoverytoolswithaseriesmotor,sinceit

mayignite.

Tool name Change from R22 to R32(R410A)

Gaugemanifold Pressureishighandcannotbemeasuredwithaconventional

(R22)gauge.Topreventerroneousmixingofotherrefrigerants,

thediameterofeachporthasbeenchanged.

Itisrecommendedthegaugewithseals–0.1to5.3MPa(-1to

53bar)forhighpressure.–0.1to3.8MPa(-1to38bar)forlow

pressure.

Charginghose Toincreasepressureresistance,thehosematerialandbase

sizewerechanged.(R32/R410A)

Vacuumpump Aconventionalvacuumpumpcanbeusedbyinstallinga

vacuumpumpadapter.

(Useofavacuumpumpwithaseriesmotorisprohibited.)

Gasleakagedetector SpecialgasleakagedetectorforHFCrefrigerantR410A.

■

Copper pipes

Itisnecessarytouseseamlesscopperpipesanditisdesirablethattheamountofresidual

oilislessthan40mg/10m.Donotusecopperpipeshavingacollapsed,deformedor

discoloredportion(especiallyontheinteriorsurface).Otherwise,theexpansionvalveor

capillarytubemaybecomeblockedwithcontaminants.

AsanairconditionerusingR32(R410A)incurspressurehigherthanwhenusing

conventionalrefrigerant,itisnecessarytochooseadequatematerials.

ThicknessesofcopperpipesusedwithR32(R410A)areasshowninthetable.Neveruse

copperpipesthinnerthanthatinthetableevenwhenitisavailableonthemarket.

Thicknesses of Annealed Copper Pipes

Pipe outside diameter [mm (in.)] Thickness [mm]

9.52(3/8) 0.80

15.88(5/8) 1.00

2.2. Accessories

WARNING

Forinstallationpurposes,besuretousethepartssuppliedbythemanufacturerorother

prescribedparts.Theuseofnon-prescribedpartscancauseseriousaccidentssuchas

theunitfalling,waterleakage,electricshock,orre.

Followinginstallationpartsaresupplied.Usethemasrequired.

Keepthismanualinasafeplace,anddonotdiscardanyotheraccessoriesuntilthe

installationworkhasbeencompleted.

Name and shape Q’ty Description

Installation

manual

Thismanual

Drainpipe

Foroutdoorunitdrainpipingwork

(Maynotbesupplied,dependingon

themodel.)

Draincap

PartslistfordemandcontrolPCBkit

Name and shape Q’ty Description

Cabletiewithclips

Forxingthesignaltransmission

cable.

Cabletie(small)

ForxingtheEMIcoreandthesignal

transmissioncable.

EMIcore

Attachedtothesignaltransmission

cable.

Insulation

2 ForattachingtheEMIcore.

2.3. Pipe requirements

■

Selecting the pipe material

CAUTION

Donotuseexistingpipes.

Usepipesthathavecleanexternalandinternalsideswithoutanycontaminationwhich

maycausetroubleduringuse,suchassulfur,oxide,dust,cuttingwaste,oil,orwater.

Itisnecessarytouseseamlesscopperpipes.

Material:Phosphordeoxidizedseamlesscopperpipes.

Itisdesirablethattheamountofresidualoilislessthan40mg/10m.

Donotusecopperpipesthathaveacollapsed,deformed,ordiscoloredportion

(especiallyontheinteriorsurface).Otherwise,theexpansionvalveorcapillarytubemay

becomeblockedwithcontaminants.

Improperpipeselectionwilldegradeperformance.Asanairconditionerusing

R32(R410A)incurspressurehigherthanwhenusingconventionalrefrigerant,itis

necessarytochooseadequatematerials.

NOTE:

ThicknessesofcopperpipesusedwithR32(R410A)areasshowninthetable.

Neverusecopperpipesthinnerthanthoseindicatedinthetableeveniftheyareavailable

onthemarket.

Thicknesses of Annealed Copper Pipes

Pipe outside diameter [mm (in.)]

Thickness

[mm]

9.52(3/8) 0.80

15.88(5/8) 1.00

■

Protection of pipes

Protectthepipestopreventtheentryofmoistureanddust.

Especially,payattentionwhenpassingthepipesthroughaholeorconnectingtheendof

apipetotheoutdoorunit.

Location Working period Protection method

Outdoor

1monthormore Pinchpipes

Lessthan1month Pinchortapepipes

Indoor - Pinchortapepipes

■

Refrigerant pipe size and allowable piping length

CAUTION

Keepthepipinglengthbetweentheindoorunitandoutdoorunitwithintheallowable

tolerance.

Themaximumlengthsofthisproductareshowninthetable.Iftheunitsarefurtherapart

thanthis,correctoperationcannotbeguaranteed.

Pipediameter<Liquid/Gas>[mm(in.)] 9.52(3/8)/15.88(5/8)

Max.pipinglength(L)[m] 75

Max.heightdifference(H)

<Indoorunittooutdoorunit>[m]

View(Example)

*1:Forthestandardpipediameter.

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2.4. Electrical requirements

CAUTION

Besuretoinstallabreakerwithspeciedcapacity.

Beforetheelectricalworking,conrmelectricalstandardsandregulationsineachcountry,

region,orinstallingplace.Thenselectappropriatecablesandbreakersthatcomplywiththem.

Voltage rating 1Φ240V(50Hz)

Operating range 198to264V

Cable Conductorsize[mm

]

Type Remarks

PowerSupplyCable 2.5-4.0 Type60245IEC66

2Cable+Earth(Ground)

1Φ240V

ConnectionCable 1.5-2.5 Type60245IEC57

3Cable+Earth(Ground)

1Φ240V

Demandcontrol

signaltransmission

cable

0.5-1.5 AS/NZS5000.2

Doubleinsulated

(Max.length:30m)

Selectedsample:Selectthecorrectcabletypeandsizeaccordingtothecountryor

region’sregulations.

Max.wirelength:Setalengthsothatthevoltagedropislessthan2%.Increasethewire

diameterwhenthewirelengthislong.

Breaker Specication

Circuitbreaker(overcurrent) Current:20(A)

Earthleakagebreaker Leakagecurrent:30mA0.1secorless

Selecttheappropriatebreakerofthedescribedspecicationaccordingtothenationalor

regionalstandards.

Selectthebreakerthatenoughloadcurrentcanpassthroughit.

• Beforestartingworkcheckthatpowerisnotbeingsuppliedtoallpolesoftheindoor

unitandoutdoorunit.

• Installallelectricalworksinaccordancetostandard.

• Installthedisconnectdevicewithacontactgapofatleast3mminallpolesnearbythe

units.(Bothindoorunitandoutdoorunit)

• Wiringsizemustcomplywiththeapplicablelocalandnationalcode.

2.5. Additional charge amount

■

For Pre-charge lengths

Piping length (L) *Pre-Charge [m]

■

If additional refrigerant is required

• WhenthepipingislongerthanPre-chargelength,additionalchargingisnecessary.

• Fortheadditionalamount,seethetablebelow.

Additional charging amount

Refrigerant pipe size

[mm (in.)]

Piping length (L)*

~20m

30m 40m 50m 60m 70m 75m g/m

Liquid 9.52(3/8)

None 400g 800g

1,200g 1,600g 2,000g 2,200g

40g/m

Gas 15.88(5/8)

*Referto“Refrigerantpipesizeandallowablepipinglength”.

Maximum amount of refrigerant charge

3850g(1650g+2200g)

2.6. Operating range

Coolingmode

Drymode

Heatingmode

[Reversecyclemodelonly]

Outdoor

temperature

-10to46˚C

-15 to 24 ˚C

• Ifthisunitisoperatedoutsidetheoperatingtemperature,theprotectioncircuitsmaybe

activatedtostoptheunit.

3. INSTALLATION WORK

Makesuretoobtainthecustomer’sapprovalforselectingandinstallingtheoutdoorunit.

WARNING

Securelyinstalltheoutdoorunitatalocationthatcanwithstandtheweightoftheunit.

Otherwise,theoutdoorunitmayfallandcauseinjury.

Besuretoinstalltheoutdoorunitasprescribed,sothatitcanwithstandearthquakes

andtyphoonsorotherstrongwinds.Improperinstallationcancausetheunittotoppleor

fall,orotheraccidents.

Donotinstalltheoutdoorunitneartheedgeofabalcony.Otherwise,childrenmayclimb

ontotheoutdoorunitandfalloffofthebalcony.

CAUTION

Donotinstalltheoutdoorunitinthefollowingareas:

• Areawithhighsaltcontent,suchasattheseaside.Itwilldeterioratemetalparts,

causingthepartstofailortheunittoleakwater.

• Arealledwithmineraloilorcontainingalargeamountofsplashedoilorsteam,suchas

akitchen.Itwilldeteriorateplasticparts,causingthepartstofailortheunittoleakwater.

• Areathatgeneratessubstancesthatadverselyaffecttheequipment,suchassulfuric

gas,chlorinegas,acid,oralkali.Itwillcausethecopperpipesandbrazedjointsto

corrode,whichcancauserefrigerantleakage.

• Areacontainingequipmentthatgenerateselectromagneticinterference.Itwillcause

thecontrolsystemtomalfunction,preventingtheunitfromoperatingnormally.

• Areathatcancausecombustiblegastoleak,containssuspendedcarbonbersor

ammabledust,orvolatileinammablessuchaspaintthinnerorgasoline.Ifgas

leaksandsettlesaroundtheunit,itcancauseare.

• Areawheresmallanimalsmaylive.Itmaycausefailure,smokeorreifsmall

animalsenterandtouchinternalelectricalparts.

• Areawhereanimalsmayurinateontheunitorammoniamaybegenerated.

• Areathathasheatsources,vapors,ortheriskofleakageoraccumulationof

ammablegas.

Donottilttheoutdoorunitmorethan3degrees.

Installtheoutdoorunitinawell-ventilatedlocationawayfromrainordirectsunlight.

Iftheoutdoorunitmustbeinstalledinanareawithineasyreachofthegeneralpublic,

installasnecessaryaprotectivefenceortheliketopreventtheiraccess.

Installtheoutdoorunitinalocationthatwouldnotinconvenienceyourneighbors,as

theycouldbeaffectedbytheairowcomingoutfromtheoutlet,noise,orvibration.Ifit

mustbeinstalledinproximitytoyourneighbors,besuretoobtaintheirapproval.

Iftheoutdoorunitisinstalledinacoldregionthatisaffectedbysnowaccumulation,

snowfall,orfreezing,takeappropriatemeasurestoprotectitfromthoseelements.

Toensureastableoperation,installinletandoutletducts.

Installtheoutdoorunitinalocationthatisawayfromexhaustortheventportsthat

dischargevapor,soot,dust,ordebris.

Installtheindoorunit,outdoorunit,powersupplycable,connectioncable,andremote

controlcableatleast1mawayfromatelevisionorradioreceivers.Thepurposeofthis

istopreventTVreceptioninterferenceorradionoise.(Eveniftheyareinstalledmore

than1mapart,youcouldstillreceivenoiseundersomesignalconditions.)

Ifchildrenunder10yearsoldmayapproachtheunit,takepreventivemeasuressothat

theycannotreachtheunit.

Keepthelengthofthepipingoftheindoorandoutdoorunitswithintheallowablerange.

Formaintenancepurposes,donotburythepiping.

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3.1. Installation dimensions

3.1.1. Outdoor unit installation

When the upper space is open: (Unit:mm)

(1)Obstaclesatrearonly

100ormore

(2)Obstaclesatrearandsides

250ormore

300ormore

100ormore

(3)Obstaclesatfront

600ormore

(4)Obstaclesatfrontandrear

600ormore

100ormore

When an obstruction in the upper space: (Unit:mm)

(1)Obstaclesatrearandabove

300ormore

Max.500

600or

(2)Obstaclesattherear,sides,andabove

1,000or

100ormore

250ormore

500ormore

Max.500

3.1.2. Multiple outdoor unit installation

• Provideatleast250mmofspacebetweentheoutdoorunitsifmultipleunitsare

installed.

• Whenroutingthepipingfromthesideofanoutdoorunit,providespaceforthepiping.

When the upper space is open: (Unit:mm)

(1)Obstaclesattherearonly

300or

250ormore

(2)Obstaclesatthefrontonly

1,500ormore

250ormore

(3)Obstaclesatthefrontandrear

500ormore

1,500ormore

250ormore

When an obstruction in the upper space: (Unit:mm)

(1)Obstaclesattherearandabove

• Upto3unitscanbeinstalledsidebyside.

• When4unitsormorearearrangedinaline,providethespaceasshownbelow.

1,500ormore

500ormore

250ormore

Max.300

1,500ormore

3.1.3. Outdoor units installation multi-row (Unit:mm)

(1)Singleparallelunitarrangement

150ormore

600ormore

1,000ormore

2,000ormore

(2)Multipleparallelunitarrangement

500ormore

600ormore

1,500ormore

250ormore

3,000ormore

250ormore

1,500ormore

500ormore

250ormore

CAUTION

Donotinstalltheoutdoorunitintwo-stagewherethedrainwatercouldfreeze.

Otherwisethedrainagefromtheupperunitmayformiceandcauseamalfunctionofthe

lowerunit.

NOTES:

• Ifthespaceislargerthanstatedabove,theconditionwillbethesameaswhenthereis

noobstacle.

• Heightabovetheoorlevelshouldbe2in(50mm)ormore.

• Wheninstallingtheoutdoorunit,besuretoopenthefrontandleftsidetoobtainbetter

operationefciency.

3.2. Transporting the unit

WARNING

Donottouchthens.

Otherwise,personalinjurycouldresult.

CAUTION

Whencarryingtheunit,holdthehandlesontherightandleftsidesandbecareful.

Iftheoutdoorunitiscarriedfromthebottom,handsorngersmaybepinched.

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• Besuretoholdthehandlesonthesidesoftheunit.Otherwise,thesuctiongrilleson

thesidesoftheunitmaybedeformed.

Handle

3.3. Mounting the unit

(Unit:mm)

132

AIR

650 119

50 50

363

4-Φ12Hole



• Install4anchorboltsatthelocationsindicatedwitharrowsintheabovegure.

• Toreducevibration,donotinstalltheunitdirectlyontheground.Installitonasecure

base(suchasconcreteblocks).

• Thefoundationshallsupportthelegsoftheunitandhaveawidthof50mmormore.

• Dependingontheinstallationconditions,theoutdoorunitmayspreaditsvibration

duringoperation,whichmaycausenoiseandvibration.Therefore,attachdamping

materials(suchasdampingpads)totheoutdoorunitduringinstallation.

• Installthefoundation,makingsurethatthereisenoughspaceforinstallingthe

connectionpipes.

• Securetheunittoasolidblockusingfoundationbolts.(Use4setsofcommercially

availableM10bolts,nuts,andwashers.)

• Theboltsshouldprotrude20mm.

(Refertothegurebelow.)

• Ifoverturningpreventionisrequired,purchasethenecessarycommerciallyavailable

items.

Bolt

20mm

Nut

Base

Fixsecurelywithboltsonasolidblock.(Use4setsofcommerciallyavailableM10bolt,

nutandwasher.)

•Donotinstalldirectlyontheground,thismayresultinequipmentfailure.

•Thedrainwaterisdischargedfromthebottomoftheequipment.Constructadrainditch

aroundthebaseanddischargethedrainwaterproperly.

•Provideamplespaceforicebuildupfromcondensatebetweenthebottomoftheunitand

theflatsurfaceonwhichitismounted.Otherwise,thereisriskthatthedrainagewater

willfreezebetweenthedeviceandthesurface,disablingdrainage.

50mmormore

CAUTION

Iftheunitisinstalledinaregionthatisexposed

tohighwinds,freezingconditions,freezingrain,

snowfallorheavysnowaccumulation,take

appropriatemeasurestoprotectitfromthose

elements.

Toensurestableoperation,theoutdoorunitmust

beinstalledonaraisedstandorrack,atorabove

theanticipatedsnowdepthfortheregion.

Theinstallationofsnowhoodsanddriftprevention

fencingisrecommendedwhenblowinganddrifting

snowiscommontotheregion.

3.4. Drain installation

CAUTION

PerformdrainworkinaccordancewiththisManual,andensurethatthedrainwateris

properlydrained.Ifthedrainworkisnotcarriedoutcorrectly,watermaydripdownfrom

theunit,wettingthefurniture.

Whentheoutdoortemperatureis0°Corless,donotusetheaccessorydrainpipe

anddraincap.Ifthedrainpipeanddraincapareused,thedrainwaterinthepipemay

freezeinextremelycoldweather.(Reversecyclemodelonly)

• Ifyouareinstallingthedrainpipe,pleaseprovide

aworkingspaceunderthebaseoftheoutdoorunit.

• Asthedrainwaterowsoutoftheoutdoorunit

duringheatingoperation,installthedrainpipeand

connectittoacommercial16mmhose.(Reverse

cyclemodelonly)

• Wheninstallingthedrainpipe,plugalltheholes

otherthanthedrainpipemountingholeinthe

bottomoftheoutdoorunitwithputtysothereisno

waterleakage.(Reversecyclemodelonly)

 (Unit:mm)

Draincapmountinghole

AIR

Drainpipemountinghole

302

265

188

439

623

3.5. Pipe installation

CAUTION

Donotusemineraloilonaaredpart.Preventmineraloilfromgettingintothesystem

asthiswouldreducethelifetimeoftheunits.

Whileweldingthepipes,besuretoblowdrynitrogengasthroughthem.

■

Flaring

(1) Cuttheconnectionpipetothenecessarylengthwithapipecutter.

(2) Holdthe pipe downward so thatcuttings will not enter the pipe and remove the

burrs.

(3) Insertthearenutontothepipeandarethepipewithaaringtool.

Insertthe flare nut (always use the flare nutattached to the indoor and outdoor units

respectively)ontothepipeandperformtheareprocessingwithaaretool.

UsethespecialR32(R410A)aretool,ortheconventional(forR22)aretool.

Whenusingtheconventionalaretool,always use an allowance adjustment gaugeand

securetheAdimensionshowninthefollowingtable.

Checkif[L]isareduniformlyand

isnotcrackedorscratched.

Die

Pipe

Pipeoutside

diameter

A(mm)

Flaringtoolfor

R32orR410A,clutchtype

Conventional(R22)Flaringtool

Clutchtype Wingnuttype

ø9.52mm(3/8") 0to0.5 1.0to1.5 1.5to2.0

ø15.88mm(5/8") 0to0.5 1.0to1.5 1.5to2.0

Baseoftheoutdoorunit

Drainpipe

Drainpipemountinghole

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CAUTION

Donotblockthewallsandtheceilinguntilthesealingtestandthechargingofthe

refrigerantgashavebeencompleted.

Formaintenancepurposes,donotburythepipingoftheoutdoorunit.

• Afterconnectingthepipes,performasealingtest.

• Makesurethatthe3-wayvalvesareclosedbeforeperformingasealingtest.

• Pressurizenitrogengasto4.15MPatoperformthesealingtest.

• Addnitrogengastoboththeliquidpipesandthegaspipes.

• Checkallareconnectionsandwelds.Then,checkthatthepressurehasnot

decreased.

• Comparethepressuresafterpressurizingandlettingitstandfor24hours,andcheck

thatthepressurehasnotdecreased.

*Whentheoutdoorairtemperaturechanges5°C,thetestpressurechanges

0.05MPa.Ifthepressurehasdropped,thepipejointsmaybeleaking.

• Ifaleakisfound,immediatelyrepairitandperformthesealingtestagain.

• Aftercompletingthesealingtest,releasethenitrogengasfrombothvalves.

• Releasethenitrogengasslowly.

3.7. Vacuum process and drying process

CAUTION

Performarefrigerantleakagetest(airtightnesstest)tocheckforleaksusingnitrogen

gaswhileallvalvesintheoutdoorunitareclosed.(Usethetestpressureindicatedon

thenameplate.)

Besuretoevacuatetherefrigerantsystemusingavacuumpump.

Therefrigerantpressuremaysometimesnotrisewhenaclosedvalveisopenedafter

thesystemisevacuatedusingavacuumpump.Thisiscausedbytheclosureofthe

refrigerantsystemoftheoutdoorunitbytheelectronicexpansionvalve.Thiswillnot

affecttheoperationoftheunit.

Ifthesystemisnotevacuatedsufciently,itsperformancewilldrop.

Useacleangaugemanifoldandcharginghosethatweredesignedspecicallyforuse

withR32(R410A).Usingthesamevacuumequipmentfordifferentrefrigerantsmay

damagethevacuumpumportheunit.

Donotpurgetheairwithrefrigerants,butuseavacuumpumptoevacuatethesystem.

Always use a vacuum pump to purge the air.

Refrigerant for purging the air is not charged in the outdoor unit at the factory.

(1) Removethecap,andconnectthegaugemanifold andthevacuumpumptothe

chargingvalvebytheservicehoses.

(2) Vacuumtheindoorunitandtheconnectingpipesuntilthepressuregaugeindicates

-0.1MPa(-76cmHg).[Forvacuumgauge:65Pa(500microns)]

(3) When -0.1 MPa (-76 cmHg) [For vacuum gauge: 65 Pa (500 microns)] is reached,

operatethevacuumpumpforatleast60minutes.

(4) Disconnecttheservicehosesandtthecaptothechargingvalvetothespeciedtorque.

(5) Remove theblank caps,andfully openthespindles ofthe3-way valveswitha

hexagonwrench[Torque:6~7N·m(60to70kgf·cm)].

(6) Tightentheblankcapsofthe2-wayvalveand3-wayvalvetothespeciedtorque.

Tightening torque

Blank cap

9.52mm(3/8in.) 20to25N·m(200to250kgf·cm)

15.88mm(5/8in.) 30to35N·m(300to350kgf·cm)

Charging port cap 12.5to16N·m(125to160kgf·cm)

Outdoorunit

Connectingpipe

Blankcap

Hexagonwrench

3-wayvalve(Gas)

Chargingport

Cap

Servicehose

withvalvecore

Usea4mm

hexagonwrench.

Gaugemanifold

Vacuumpump

Servicehose

■

Bending pipes

(1) Whenbendingthepipe,becarefulnottocrushit.

(2) Topreventbreakingofthepipe,avoidsharpbends.

 Bendthepipewitharadiusofcurvatureof70mmorover.

(3) Ifthecopperpipeisbendthepipeorpulledtooften,itwillbecomestiff.Do not

bendthepipesmorethanthreetimesatoneplace.

■

Connection pipes

Outdoor unit

(1) Detachthecapsandplugsfromthepipes.

CAUTION

Besuretoapplythepipeagainsttheportontheindoorunitandtheoutdoorunitcor-

rectly.Ifthecenteringisimproper,thearenutcannotbetightenedsmoothly.Iftheare

nutisforcedtoturn,thethreadswillbedamaged.

Donotremovethearenutfromtheindoorunitpipeuntilimmediatelybeforeconnect-

ingtheconnectionpipe.

(2) Centeringthepipeagainstportontheoutdoorunit,turnthearenutwithyourhand.

Topreventgasleakage,

coatthearesurfacewith

alkylbenzeneoil(HAB).

Donotusemineraloil.

(3) Tightenthearenutoftheconnectionpipeattheoutdoorunitvalveconnector.

3-wayvalve

(Liquid)

3-wayvalve

(Gas)

Connectionpipe

(Gas)

Connection

pipe(Liquid)

Flarenut

(4) Whenthearenutistightenedproperlybyyourhand,useatorquewrenchtonally

tightenit.

90°

Holding

wrench

Torque wrench

Flare nut

Connection pipe

(liquid)

Connection pipe

CAUTION

Holdthetorquewrenchatitsgrip,keepingitintherightanglewiththepipe,inorderto

tightenthearenutcorrectly.

Flare nut Tightening torque

9.52mm(3/8in.)dia. 32to42N·m(320to420kgf·cm)

15.88mm(5/8in.)dia. 63to75N·m(630to750kgf·cm)

CAUTION

Fastenaarenutwithatorquewrenchasinstructedinthismanual.Iffastenedtoo

tight,thearenutmaybebrokenafteralongperiodoftimeandcausealeakageof

refrigerant.

Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybeforeyourun

thecompressor.Donotoperatethecompressorundertheconditionofrefrigerantpiping

notattachedproperlywith3-wayvalvesopen.Thismaycauseabnormalpressureinthe

refrigerationcyclethatleadstobreakageandeveninjury.

3.6. Sealing test

WARNING

Beforeoperatingthecompressor,installthepipesandsecurelyconnectthem.

Otherwise,ifthepipesarenotinstalledandifthevalvesareopenwhenthecompressor

operates,aircouldentertherefrigerationcycle.Ifthishappens,thepressureinthe

refrigerationcyclewillbecomeabnormallyhighandcausedamageorinjury.

Aftertheinstallation,makesurethereisnorefrigerantleakage.Iftherefrigerantleaks

intotheroomandbecomesexposedtoasourceofresuchasafanheater,stove,or

burner,itproducesatoxicgas.

Donotsubjectthepipestostrongshocksduringthesealingtest.Itcanrupturethe

pipesandcauseseriousinjury.

9374995639-02_IM.indd 8 7/8/2019 08:57:12

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CAUTION

Installinsulationaroundboththegasandliquidpipes.Failuretodosomaycausewater

leaks.

Useinsulationwithheatresistanceabove120°C.(Reversecyclemodelonly)

Inaddition,ifthehumiditylevelattheinstallationlocationoftherefrigerantpipingis

expectedtoexceed70%,installinsulationaroundtherefrigerantpiping.Iftheexpected

humiditylevelis70-80%,useinsulationthatis15mmorthicker,andiftheexpected

humiditylevelexceeds80%,useinsulationthatis20mmorthicker.

Ifinsulationisusedthatisnotasthickasspecied,condensationmayformonthe

surfaceoftheinsulation.

Inaddition,useinsulationwithheatconductivityof0.045W/(m·K)orless(at20°C).

3.8. Additional charging

WARNING

Whenmovingandinstallingtheairconditioner,donotmixgasotherthanthespecied

refrigerantR32insidetherefrigerantcycle.

Ifairorothergasenterstherefrigerantcycle,thepressureinsidethecyclewillrisetoan

abnormallyhighvalueandcausebreakage,injury,etc.

CAUTION

Aftervacuumingthesystem,addrefrigerant.

Donotreuserecoveredrefrigerant.

WhenchargingtherefrigerantR32,alwaysuseanelectronicscalesforrefrigerant

charging(tomeasuretherefrigerantbyweight).Addingmorerefrigerantthanthe

speciedamountwillcauseamalfunction.

Whenchargingtherefrigerant,takeintoaccounttheslightchangeinthecomposition

ofthegasandliquidphases,andalwayschargefromtheliquidphasesidewhose

compositionisstable.

Checkifthesteelcylinderhasasiphoninstalledornotbeforelling.(Thereisan

indication“withsiphonforllingliquid”onthesteelcylinder.)

Filling method for cylinder with siphon

R32

Gas

Liquid

Setthecylinderverticalandllwiththeliquid.

(Liquidcanbelledwithoutturningbottomupwiththe

siphoninside.)

Filling method for other cylinders

R32

Gas

Liquid

Turnbottomupandllwithliquid.

(Becarefultoavoidturningoverthecylinder.)

BesuretousethespecialtoolsforR32(R410A)forpressureresistanceandtoavoid

mixingofimpuresubstances.

Iftheunitsarefurtherapartthanthemaximumpipelength,correctoperationcannotbe

guaranteed.

Makesuretobackclosingvalveafterrefrigerantcharging.Otherwise,thecompressor

mayfail.

Minimizerefrigerantreleasetotheair.ExcessivereleaseisprohibitedundertheFreon

CollectionandDestructionLaw.

3.9. Electrical wiring

WARNING

Wiringconnectionsmustbeperformedbyaqualiedpersoninaccordancewiththe

specications.Thevoltageratingforthisproductis220-240Vat50Hz.Itshouldbe

operatedwithintherangeof198to264V.

Beforeconnectingthewires,makesurethepowersupplyisOFF.

Useadedicatedpowersupplycircuit.Insufcientpowercapacityintheelectricalcircuit

orimproperwiringmaycauseelectricshockorre.

Installabreakeratthepowersupplyforeachoutdoorunit.Improperbreakerselection

cancauseelectricshockorre.

Installaleakagecircuitbreakerinaccordancewiththerelatedlawsandregulations.An

improperlyinstalledelectricalboxcovercancauseseriousaccidentssuchaselectric

shockorrethroughexposuretodustorwater.

Acircuitbreakerisinstalledinthepermanentwiring.Alwaysuseacircuitthatcantrip

allthepolesofthewiringandhasanisolationdistanceofatleast3mmbetweenthe

contactsofeachpole.

Usedesignatedcablesandpowercables.Improperusemaycauseelectricshockorre

bypoorconnection,insufcientinsulation,orovercurrent.

Donotmodifypowercable,useextensioncableorbranchwiring.Improperusemay

causeelectricshockorrebypoorconnection,insufcientinsulationorovercurrent.

Connecttheconnectorcablesecurelytotheterminal.Checknomechanicalforcebears

onthecablesconnectedtotheterminals.Faultyinstallationcancauseare.

Useringterminalsandtightentheterminalscrewstothespeciedtorques,otherwise,

abnormaloverheatingmaybeproducedandpossiblycauseseriousdamageinsidethe

unit.

Makesuretosecuretheinsulationportionoftheconnectorcablewiththecableclamp.

Damagedinsulationcancauseashortcircuit.

Fixcablessothatcablesdonotmakecontactwiththepipes(especiallyonhigh

pressureside).Donotmakepowersupplycableandtransmissioncablecomein

contactwithvalves(Gas).

Neverinstallapowerfactorimprovementcondenser.Insteadofimprovingthepower

factor,thecondensermayoverheat.

Besuretoperformtheearthing(grounding)work.

Donotconnectearthing(grounding)wirestoagaspipe,waterpipe,lightningrodor

earthing(grounding)wireforatelephone.

• Connectiontoagaspipemaycauseareorexplosionifgasleaks.

• Connectiontoawaterpipeisnotaneffectiveearthing(grounding)methodifPVC

pipeisused.

• Connectiontotheearthing(grounding)wireofatelephoneortoalightningrodmay

causeadangerouslyabnormalriseintheelectricalpotentialiflightningstrikes.

Improperearthing(grounding)workcancauseelectricshocks.

Securelyinstalltheelectricalboxcoverontheunit.Animproperlyinstalledservicepanel

cancauseseriousaccidentssuchaselectricshockorrethroughexposuretodustor

water.

CAUTION

Theprimarypowersupplycapacityisfortheairconditioneritself,anddoesnotinclude

theconcurrentuseofotherdevices.

Donotstartoperationuntiltherefrigerantischargedcompletely.Thecompressorwill

failifitisoperatedbeforetherefrigerantpipingchargingiscomplete.

Transmissioncablebetweenindoorunitandoutdoorunitis240V.

Besurenottoremovethermistorsensoretc.frompowerwiringandconnectionwiring.

Compressormayfailifoperatedwhileremoved.

Startwiringworkafterclosingbranchswitchandovercurrentbreaker.

Useanearthleakagebreakerthatiscapableofhandlinghighfrequencies.Becausethe

outdoorunitisinvertercontrolled,ahigh-frequencyearthleakagebreakerisnecessary

topreventamalfunctionofthebreakeritself.

Whenusinganearthleakagebreakerthathasbeendesignedsolelyforearth(ground)

faultprotection,besuretoinstallafuse-equippedswitchorcircuitbreaker.

DonotconnecttheACpowersupplytothetransmissionlineterminalboard.Improper

wiringcandamagetheentiresystem.

Donotusecrossoverpowersupplywiringfortheoutdoorunit.

Ifthetemperaturesurroundingthebreakeristoohigh,theamperageatwhichthe

breakercutsoutmaydecrease.

Becarefulnottogenerateasparkasfollowsforusingaammablerefrigerant.

• Donotremovethefusewhilepowerison.

• Donotdisconnectplugfromthewalloutletandthewiringwhilethepowerison.

• Itisrecommendedtopositiontheoutletconnectioninahighposition.Placethe

cordssothattheydonotgettangled.

Conrmtheindoorunitmodelnamebeforeconnecting.

IftheindoorunitisnotR32compatible,errorsignalwillbedisplayed,andtheunitwillbe

inoperable.

■

How to connect wiring to the terminal

Cautionwhenwiringcable

Whenstrippingoffthecoatingofaleadwire,alwaysuseaspecialtoolsuchasawire

stripper.Ifthereisnospecialtoolavailable,carefullystripthecoatingwithaknifeetc.

(1) Useringterminalswithinsulatingsleevesasshowninthegurebelowtoconnect

totheterminalblock.

(2) Securelyclamptheringterminalstothewiresusinganappropriatetoolsothatthe

wiresdonotcomeloose.

Sleeve

Strip:10mm

Ringterminal

(3) Usethespeciedwires,connectthemsecurely,andfastenthemsothatthereisno

stressplacedontheterminals.

(4) Useanappropriatescrewdrivertotightentheterminalscrews.Donotusea

screwdriverthatistoosmall,otherwise,thescrewheadsmaybedamagedand

preventthescrewsfrombeingproperlytightened.

(5) Donottightentheterminalscrewstoomuch,otherwise,thescrewsmaybreak.

Wire

Screwwithspecialwasher

Ringterminal

Terminalblocks



Screwwith

specialwasher

Wire

Ringterminal

(6) Seethetablebelowfortheterminalscrewtighteningtorques.

Tightening torque

[N·m (kgf·cm)]

M4screw 1.2to1.8(12to18)

M5screw 2.0to3.0(20to30)

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■

Connection diagrams

EARTH

(GROUND)

POWERSUPPLY

Indoorunit

sideterminal

Outdoorunit

sideterminal

(GROUND)

EARTH

EARTH

(GROUND)

Earthing(Grounding)line

Powerline

Controlline

■

Connection cable preparation

Keeptheearth(ground)wirelongerthantheotherwires.

Earth(Ground)wire

20mm

Powersupplycableor

Transmissioncable

30mmormore

■

Wiring procedure

(1) Servicecoverremoval

• Removethetwomountingscrews.

• Removetheservicecoverbypushingdownwards.

Directionofthe

servicecover

removal

Hook(3places)

Servicecover

(2) Valvecoverremoval.

•Removetheonemountingscrew.

•Removethevalvecoverbyslidingupward.

Hook(4places)

Valvecover

(3) Connectthepowersupplycableandtheconnectioncabletoterminal.

(4) Fastenthepowersupplycableandconnectioncablewithcableclamp.

NL321

Terminalblocks

Firmlysecure

cableclampso

wireterminations

willnotreceive

externalstress.

Usethespecied

wiretypeand

connectitsecurely.

Cableclamp

Controlbox

Connectioncable

Powersupplycable

Terminalblocks

Indoor

unit

EARTH

3.10. Demand control

WARNING

DonotturnONthepoweruntilallworkhasbeencompleted.TurningONthepower

beforetheworkiscompletedcancauseseriousaccidentssuchaselectricshockorre.

Ensurethatanyelectricalinstallationiscompletedbyaqualiedperson.

EnsuretheelectricalinstallationisinstalledinaccordancewithAS/NZS3000.

(1)Removetheservicepanelandvalvecoveroftheoutdoorunit.

Valvecover

Servicepanel

(2)Passthesignaltransmissioncableasshowninthegure.

Signaltransmissioncable

(3)Connectthesignal transmissioncable(eld-supplied)tothe demandcontrolsignal

terminalblock.

1:DRM1

2:DRM2

3:DRM3

C:COMMON

(mm)

㪈㪉㪊㪚

NOTE:Conrmthateachwiresofthesignal

transmissioncablearermlyconnectedto

correspondingterminaloftheterminalblock

tothedemandcontrolsignalterminalblock.

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(4)Putthecabletiewithclipintotheholesonthespacer.

Cabletiewithclip

(5)Fixthesignaltransmissioncablewiththecabletie(withclip).

Thencutofftheredundantendofthecabletie(withclip).

㪈㪉㪊㪚

(6)SecuretheEMIcoretothesignaltransmissioncablebyusingthecabletie(small).

EMIcore

Cable-tie(small)

0-10

(mm)

(7)AttachtheInsulationtotheEMIcore.

Insulation

(8)Reinstalltheservicepanelandvalvecover.

NOTE: Donotpinchthesignaltransmissioncablewiththevalvecover.

CAUTION

Routethesignaltransmissioncableawayfromthepowersupplycable.

Adjacentwiringofthosecablesmayleadtheproductmalfunctionscausedbygenerated

noise.

• Whentestingtheoperationofthedemandcontrolmodes,ensuretheairconditioner

anddemandcontrolPCBhasbeeninstalledinaccordancewiththeprovided

installationmanuals.

• EnquirieswhentestingtheoperationofthedemandcontrolPCB:

ConsultFujitsuCustomerServiceandyourenergyproviderifyouhaveanyoperational

issuesorerrorsarecaused.

3.11. Protection for the intrusion of small animals

WARNING

Removethegapofthepowersupplycableandconnectioncableinlet.Ifsmallanimals

suchasinsectsentertheexternalunit,ashortcircuitmaybecausednearelectrical

componentsintheservicepanel.

1.Removethecoverplate.

Coverplate

Insulation(seal)

2. Fixthepowersupplycableandconnectioncablewiththecableclipofthebaseofthe

valves.

Powersupplycableand

connectioncable

Cableclip

3.Attachthecoverplate.

Coverplate

CAUTION

Fixcablessothatcablesdonotmakecontactwiththepipes(especiallyonhigh

pressureside).

Donotmakepowersupplycableandconnectioncablecomeincontactwithvalve

(Gas).

Powersupplycable

andconnectioncable

Valve

(Gas)

Gap

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4. TEST RUN

CAUTION

Alwaysturnonthepower12hourspriortothestartoftheoperationinorderto

ensurecompressorprotection.

MakeaTESTRUNinaccordancewiththeinstallationinstructionsheetfortheindoorunit.

5. FINISHING

WARNING

Installtheinsulatedpipessothattheydonottouchthecompressor.

5.1. Installing insulation

• DeterminethethicknessoftheinsulationmaterialbyreferringtoTableA.

Table A, Selection of insulation

(for using an insulation material with equal heat transmission rate or below

0.040 W/(m·k))

Relative humidity

[mm (in.)]

Insulation material

Minimum thickness [mm]

70%

or more

75%

or more

80%

or more

85%

or more

Pipe

diameter

9.52(3/8) 9 11 14 18

15.88(5/8) 10 12 16 20

Iftheambienttemperatureandrelativehumidityexceed32°C,increasethelevelofheat

insulationfortherefrigerantpipes.

6. PUMP DOWN

PUMP DOWN (Refrigerant collecting operation)

Performthefollowingprocedurestocollecttherefrigerantwhenmovingtheindoorunitor

theoutdoorunit.

(1) Closethe3-wayvalve(Liquid).

(2) Pressthepush-buttonswitchonthecircuitboardonce.

 TheLEDonthecircuitboardstartslighting.ThisindicatesthestartofPUMPDOWN

operation.

(3) PUMPDOWNoperationcontinuesforabout1minute.

 Thenclosethe3-wayvalve(Gas)immediately.

 Thecompressorstopsautomatically.

(4)Turnthepoweroff.

PUMPDOWNSW

WARNING

Thispart(Chokecoil)generateshighvoltages.Nevertouchthispart.

Nevertouchelectricalcomponentssuchastheterminalblocksexceptthebuttonon

thedisplayboard.Itmaycauseaseriousaccidentsuchaselectricshock.

Duringthepump-downoperation,makesurethatthecompressoristurnedoff

beforeyouremovetherefrigerantpiping.

Donotremovetheconnectionpipewhilethecompressorisinoperationwith3-way

valveopen.Thismaycauseabnormalpressureintherefrigerationcyclethatleads

tobreakageandeveninjury.



CAUTION

Performthepumpdownoperationbeforedisconnectinganyrefrigerantpipeor

electriccable.

Collectrefrigerantfromtheserviceportorthe3-wayvalveifpumpdowncannotbe

performed.

Incaseofgroupcontrolsysteminstallation,disconnectallremotecontrollercables

beforestartingthepumpdownoperation.

(Groupcontrolsysteminstallationisdescribedin“SPECIALINSTALLATION

METHODS”intheinstallationmanualoftheindoorunit.)

Pleasechecktherefrigerantcircuitforanyleaksbeforestartingthepumpdown

operation.

Donotproceedwiththepumpdownoperationifthereisnorefrigerantleftinthe

circuitduetobentorbrokenpiping.

9374995639-02_IM.indd 12 7/8/2019 08:57:32

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Fujitsu AOTG30KMTC Installation guide

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