Fujitsu AOYG12KBTA Installation guide

En-1

WARNING

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

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

sional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.

• 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.

• 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.

• Ifrefrigerantleakswhileworkisbeingcarriedout,ventilatethearea.Iftherefrigerant

comesincontactwithaame,itproduces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installationplace.

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

ant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refrigera-

tioncyclethatleadstoruptureandeveninjury.

• Wheninstallingor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rupture,injury,etc.

• Toconnecttheindoorunit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installa-

tion.

• Thereisnot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.

• 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rupture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.

CAUTION

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

• Theapplianceshallnotbeinstalledinanunventilatedspace,ifthatspaceissmaller

than1.61m

• Thisproduct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productbyfollowinglocalcodesandregulationsinforceattheplaceof

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

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

installedaloneorbeinstalledwithnon-authorizeddevicebythemanufacturer.

• 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product.

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

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

• Thisproductisnotexplosionproof,andthereforeshouldnotbeinstalledinexplosive

atmosphere.

• Thisproductcontainsnouser-serviceableparts.Alwaysconsultexperiencedservice

techniciansforrepairing.

• Wheninstallingpipesshorterthan3m,soundoftheoutdoorunitwillbetransferred

totheindoorunit,whichwillcauselargeoperatingsoundorsomeabnormalsound.

• Whenmovingorrelocatingtheairconditioner,consultexperiencedservicetechni-

ciansfordisconnectionandreinstallationoftheproduct.

• Donottouchthensoftheheatexchanger.Touchingtheheatexchangernscould

resultindamagetothensorpersonalinjurysuchasskinrupture.

AIRCONDITIONER

OUTDOORUNIT

INSTALLATION MANUAL

PARTNo.9319205243

Contents

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

2.PRODUCTSPECIFICATION.................................................................3

2.1.Installationtools...........................................................................3

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

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

2.4.Electricalrequirements................................................................4

2.5.Additionalchargeamount............................................................4

2.6.Generalinformation.....................................................................4

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

3.1.Installationdimensions................................................................5

3.2.Mountingtheunit.........................................................................6

3.3.Removingandreplacingpart.......................................................6

3.4.Draininstallation..........................................................................6

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

3.6.Sealingtest..................................................................................7

3.7.Vacuumprocess..........................................................................8

3.8.Additionalcharging......................................................................8

3.9.Electricalwiring............................................................................8

4.TESTRUN..............................................................................................9

5.FINISHING...........................................................................................10

5.1.Installinginsulation....................................................................10

1. SAFETY PRECAUTIONS

• Besuretoreadthismanualthoroughly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.

[Originalinstructions] Forauthorizedservicepersonnelonly.

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9319205243_IM.indb 1 11/30/2018 08:48:01

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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containingcompo-

nents,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

connected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

possibility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.

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

electrical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.

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

diameter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.

(Handling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ac-

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

• Servicingshallonlybeperformedasrecommendedbytheequipmentmanufac-

turer.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.

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cient-

ly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break-

ing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.

9319205243_IM.indb 2 11/30/2018 08:48:02

En-3

CAUTION

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

consideration.

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atmos-

phere,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refriger-

ant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commis-

sioning.

• 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refrig-

erant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re-

moved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.

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ignition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

Contents of change

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

(R22)gauge.Topreventerroneousmixingofotherrefriger-

ants,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.

Charge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R32/R410A.

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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conven-

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

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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.

• Thefollowinginstallationpartsaresupplied.Usethemasrequired.

• KeeptheInstallation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.)

2.3. Pipe requirements

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.

• 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]

6.35(1/4) 0.80

9.52(3/8) 0.80

12.70(1/2) 0.80

15.88(5/8) 1.00

19.05(3/4) 1.20

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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.

Model 09 12/14 18 22 24

Pipediameter<Liquid/Gas>[mm(in.)] 6.35(1/4)/

9.52(3/8)

6.35(1/4)/

12.7(1/2)

Max.pipinglength(L)[m] 20 25 30 30 30

Max.heightdifference(H)

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

15 20 20 25 25

View(Example)

2.4. Electrical requirements

CAUTION

• Besuretoinstallabreakerofthespeciedcapacity.

• Regulationofcablesandbreakerdiffersfromeachlocality,referinaccordancewith

localrules.

Voltage rating 1Φ230V(50Hz)

Operating range 198to264V

Cable Conductorsize[mm²]

Type Remarks

PowerSupplyCable

1.5(09~22model)

Type60245IEC57

2wire+Ground

1Φ230V

2.5(24model)

ConnectionCable 1.5 Type60245IEC57

3wire+Ground

1Φ230V

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

region’sregulations.

*Limitthevoltagedroplessthan2%.Increasethecablediameterifvoltagedropis2%

ormore.

Model

Breaker capacity

[A]

Earth leakage breaker

[mA]

09model 10

30

12/14model 13

18/22model 16

24model 20

• 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)

2.5. Additional charge amount

CAUTION

• Whenaddingrefrigerant,addtherefrigerantfromthechargingportatthecompletion

ofwork.

Refrigerantsuitableforapipinglengthof15m(09/12/14model)/20m(18/22/24model)is

chargedintheoutdoorunitatthefactory.

Whenthepipingisextendedlongerthanthefactorystandard,additionalchargingis

necessary.

Fortheadditionalamount,seethefollowingtable.

Model Pipelength 15m 20m 25m 30m Rate

Additional

refrigerant

None

+100g ― ― 20g/m

12/14 None +100g +200g ― 20g/m

18/22/24 None None +100g +200g 20g/m

Between15mand30m,whenusingaconnectionpipeotherthanthatinthetable,charge

additionalrefrigerantwith20g/1masthecriteria.

2.6. General information

• Iftheunitisoperatedoutsidetheoperatingtemperaturerange,variousprotective

circuitmechanismsmaybeactivatedandtheunitmaystopoperating.Forthe

operatingtemperaturerange,refertotheproductFICHEorthespecicationmanual.

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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thathasheatsources,vapors,ortheriskoftheleakageofammablegasin

thevicinity.

- 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.

• Donottilttheoutdoorunitmorethan3degrees.However,donotinstalltheunitwith

ittiltedtowardsthesidecontainingthecompressor.

• 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controller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.

Decidethemountingpositionwiththecustomerasfollows:

(1)Installtheoutdoorunitinalocationwhichcanwithstandtheweightoftheunitand

vibration,andwhichcaninstallhorizontally.

(2)Providetheindicatedspacetoensuregoodairow.

(3)Ifpossible,donotinstalltheunitwhereitwillbeexposedtodirectsunlight.

 (Ifnecessary,installablindthatdoesnotinterferewiththeairow.)

(4)Donotinstalltheunitnearasourceofheat,steam,orammablegas.

(5)Duringheatingoperation,drainwaterowsfromtheoutdoorunit.

 Therefore,installtheoutdoorunitinaplacewherethedrainwaterowwillnotbe

obstructed.

(6)Donotinstalltheunitwherestrongwindblowsorwhereitisverydusty.

(7)Donotinstalltheunitwherepeoplepass.

(8)Installtheoutdoorunitinaplacewhereitwillbefreefrombeingdirtyorgettingwetby

rainasmuchaspossible.

(9)Installtheunitwhereconnectiontotheindoorunitiseasy.

3.1. Installation dimensions

CAUTION

• Keepthespaceshownintheinstallationexamples.

Iftheinstallationisnotperformedaccordingly,itcouldcauseashortcircuitandresult

inalackofoperatingperformance.

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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

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

100ormore

Max.200

600ormore

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

600or

250ormore

100ormore

Max.200

100ormore

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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rearonly

200ormore

250ormore

(2)Obstaclesatfrontonly

1,000ormore

250ormore

(3)Obstaclesatfrontandrear

200ormore

1,000ormore

250ormore

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

(1)Obstaclesat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

200ormore

250ormore

Max.300

1,500ormore

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Outdoor units installation multi-row

(Unit:mm)

(1)Singleparallelunitarrangement

100ormore

200ormore

500ormore

1,000ormore

(2)Multipleparallelunitarrangement

200ormore

400ormore

1,000ormore

250ormore

2,000ormore

250ormore

200ormore

1,000ormore

200ormore

250ormore

NOTES:

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

isnoobstacle.

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

betteroperationefciency.

3.2. Mounting the unit

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

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

items.

(Unit:mm)

330



Bolt

Nut

Washer

Dimensions

09~22model 580

24model 600

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.

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

Ifthedrainpipeisused,thedrainwaterinthepipemayfreezeinextremelycold

climate.

Base

50mm

ormore

• 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.

3.3. Removing and replacing part

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Switch cover removal

(1) Removethetappingscrews.

(2places/09~14model,3places/

18~24model)

(2) Slidetheswitchcoverdownwardsto

release.

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Installing the switch

cover

(1) Afterinsertingthehooks(2places)on

theswitchcoverintotheholeonthe

outdoorunit,slidetheswitchcover

upwards.

(2) Replacethetappingscrews.

(2places/09~14model,3places/

18~24model)

Screws

Switchcover

Hooks

Holes

(09~14model

isunnecessary)

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.

Ifthedrainpipeisused,thedrainwaterinthepipemayfreezeinextremelycold

weather.

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

provideaworkingspaceunderthebaseof

theoutdoorunit.

•Asthedrainwaterflowsoutoftheoutdoor

unitduringheatingoperation,installthe

drainpipeandconnectittoacommercial

16mmhose.

•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.

Baseoftheoutdoorunit

Drainpipe

Drainpipemountinghole

9319205243_IM.indb 6 11/30/2018 08:48:12

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(Unit:mm)

AIR

Drainpipemountinghole

Dimensions

A B

09~22model 252 399

24model 277 409

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.

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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arenut(alwaysusetheare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6.35mm(1/4")

0to0.5 1.0to1.5 1.5to2.0

ø9.52mm(3/8")

ø12.70mm(1/2")

ø15.88mm(5/8")

ø19.05mm(3/4")

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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more.

(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.

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Flare connection

(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

correctly.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.

Connectionpipe

(Liquid)

Connectionpipe

(Gas)

Flarenuts

2-wayvalve

(Liquid)

3-wayvalve

(Gas)

(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 [mm (in.)] Tightening torque [N·m (kgf·cm)]

6.35(1/4)dia. 16to18(160to180)

9.52(3/8)dia. 32to42(320to420)

12.70(1/2)dia. 49to61(490to610)

15.88(5/8)dia. 63to75(630to750)

19.05(3/4)dia. 90to110(900to1100)

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pres-

sure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.

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.

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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230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.

• Nevertouchelectricalcomponentsimmediatelyafterthepowersupplyhasbeen

turnedoff.Electricalshockmayoccur.Afterturningoffthepower,alwayswait

10minutesormorebeforetouchingelectricalcomponents.

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

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

• Besuretoinstallanearthleakagebreaker.

Otherwise,itwillcauseelectricshockorre.

• 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,other-

wise,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groundingwork.

Donotconnectgroundingwirestoagaspipe,waterpipe,lightningrodor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groundingmethodifPVCpipeisused.

• Connectiontothegroundingwireofatelephoneortoalightningrodmaycausea

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

• Improper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.

• DonotconnecttheACpowersupplytothetransmissionlineterminalboard.Im-

properwiringcandamagetheentiresystem.

3.7. Vacuum 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sys-

tem.

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).

(3) When–0.1MPa(–76cmHg)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3-wayvalvestothespeciedtorque.

Tightening torque

Blank cap

6.35mm(1/4in.) 20to25N·m(200to250kgf·cm)

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

12.70mm(1/2in.) 28to32N·m(280to320kgf·cm)

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

19.05mm(3/8in.) 35to40N·m(350to400kgf·cm)

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

/R +L

Servicevalve

(Liquid)

Gaugemanifold

Flarenuts

Blankcaps

Vacuumpump

Chargingport

Servicevalve

(Gas)

Usea4mmhexigonwrench

Chargingportcap

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.

Chargetherefrigerantfollowingtheinstructionin“2.5.Additionalchargeamount”.

9319205243_IM.indb 8 11/30/2018 08:48:15

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CAUTION

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

includetheconcurrentuseofotherdevices.

• Iftheelectricalpowerisinadequate,contactyourelectricpowercompany.

• Installabreakerinalocationthatisnotexposedtohightemperatures.

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

breakercutsoutmaydecrease.

• Whenusinganearthleakagebreakerthathasbeendesignedsolelyforgroundfault

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

• Thissystemusesaninverter,whichmeansthatitmustbeusedanearthleakage

breakerthatcanhandleharmonicsinordertopreventmalfunctioningoftheearth

leakagebreakeritself.

• 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.

• Whentheelectricalswitchboardisinstalledoutdoors,placeitunderlockandkeyso

thatitisnoteasilyaccessible.

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

• Transmissioncablebetweenindoorunitandoutdoorunitis230V.

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

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

• Alwayskeeptothemaximumlengthoftheconnectioncable.Exceedingthe

maximumlengthmayleadtoerroneousoperation.

• 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.

• ThestaticelectricitythatischargedtothehumanbodycandamagethecontrolPC

BoardwhenhandlingthecontrolPCBoardforaddresssetting,etc.

Pleasekeepcautiontothefollowingpoints.

ProvidethegroundingofIndoorunit,OutdoorunitandOptionequipment.

Cutoffthepowersupply(breaker).

Touchthemetalsection(suchastheunpaintedcontrolboxsection)oftheindooror

outdoorunitformorethan10seconds.Dischargethestaticelectricityinyourbody.

NevertouchthecomponentterminalorpatternonthePCBoard.

• 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.

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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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Wiring method

(1) Removetheoutdoorunitswitchcover.(See“3.3.Removingandreplacingpart”.)

(2) Removetheoutdoorunitcableclamp.

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

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

(5) Installtheswitchcover.(See“3.3.Removingandreplacingpart”.)

Screw

Cableclamp

Valves

Connectioncableand

powercable

Runtheconnectioncableandpowersupply

cabletotherearoftheoutdoorunitbetween

the2valvesasshowninthegure.

(Fortheswitchcovertobeeasilyinstalled.)

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Connection diagrams

Powersupply

Powerline

Earth(Ground)line

Outdoorunitsideterminal

Indoorunitsideterminal

Earth

(Ground)line

EARTH

(GROUND)

EARTH

(GROUND)

■

Cable preparation

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

Earthwire

60mm

Powersupplycableor

Connectioncable

75mm

4. TEST RUN

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

9319205243_IM.indb 9 11/30/2018 08:48:16

En-10

5. FINISHING

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

6.35(1/4) 8 10 13 17

9.52(3/8) 9 11 14 18

12.70(1/2) 10 12 15 19

15.88(5/8) 10 12 16 20

19.05(3/4) 10 13 16 21

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

heatinsulationfortherefrigerantpipes.

9319205243_IM.indb 10 11/30/2018 08:48:16

Fujitsu AOYG12KBTA Installation guide

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