Fujitsu AOHG36KMTA Installation guide

Brand: Fujitsu

Model: AOHG36KMTA

Type: Installation guide

This manual is also suitable for

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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be-

fore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installation.

• 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.

• Anindooruniterror(errorcode:2-3)occursifanindoorunitforR410Aisconnectedto

therefrigerantsysteminaconcurrentmultipleconnectionenvironment.Inthatcase,

notetheindoormodelnamethatexperiencestheerror,andcontactourservicecentre.

AIRCONDITIONER

OUTDOORUNIT

INSTALLATION MANUAL

PARTNo.9379069984

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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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............................................................5

2.6.Generalinformation.....................................................................5

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

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

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

3.3.Mountingtheunit.........................................................................6

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

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

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

3.7.Vacuumprocess..........................................................................9

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

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

4. TESTRUN........................................................................................ 11

4.1.Pre-testruncheckitems............................................................ 11

4.2.Testoperationmethod............................................................... 11

4.3.Checklist....................................................................................12

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

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

5.2.Fillingwithputty.........................................................................12

6. HOWTOOPERATEDISPLAYUNIT................................................13

6.1.Displayunitposition...................................................................13

6.2.Descriptionofdisplayandbuttons.............................................13

7. FIELDSETTING...............................................................................13

7.1.Fieldsettingbuttons..................................................................13

7.2.Functionsettings.......................................................................14

8. EXTERNALINPUTANDOUTPUT................................................... 15

8.1.Externalinput.............................................................................15

8.2.Externaloutput..........................................................................15

9. PUMPDOWN...................................................................................16

9.1.Preparationforpumpdown....................................................... 16

9.2.Pumpdownprocedure..............................................................16

10. ERRORCODES...............................................................................17

10.1.Errordisplaymode..................................................................17

10.2.Errorcodechecktable.............................................................17

9379069984_IM.indb 1 9/2/2019 09:51:48

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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.Installa-

tion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.There-

fore,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.

9379069984_IM.indb 2 9/2/2019 09:51:52

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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atmo-

spheric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.



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.)

Draincap

One-touchbush

Forpowersupplycableandconnection

cableinstallation

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

2.3.1. 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.

Capacity [Btu/h class] 30,000 36,000

Pipediameter<Liquid/Gas>

(Standard)

[mm(in.)]

9.52(3/8)/15.88(5/8)

Max.pipinglength(L1)

[m]

Min.pipinglength(L1)

[m]

Max.heightdifference(H1)

<Indoorunittooutdoorunit>

[m]

View(Example)

*1:Forthestandardpipediameter.

2.3.2 Connectable pipe diameter and max. piping length

Theguresenclosedbyathick-linedframeindicatethestandardpipediameterandmax.

pipinglength.

Capacity [Btu/h class] 30,000 / 36,000

Pipediameter

[mm(in.)]

Liquidpipes 9.52(3/8)

Gaspipes 15.88(5/8)

Pipinglength

[m(m)]

Max.piping

length<L1>

(Pre-chargelength)

50

[30]

*1:Referto“View”inthetableof“2.3.1.Refrigerantpipesizeandallowablepipinglength”.

2.3.3. 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

2.4. Electrical requirements

CAUTION

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

• Beforetheelectricalwork,conrmelectricalstandardsandregulationsineach

country,region,orinstallingplace.Thenselectappropriatecablesandbreakersthat

complywiththem.

• EquipmentcomplyingwithIEC/EN61000-3-12

• Thisunitmustbeconnectedtoapowersupplywithimpedanceof0.419ohmandbe-

low.Ifthepowersupplydoesnotsatisfythisrequirement,pleaseconsultthepower

supplier.

Cable Cablesize[mm²] Type Remarks

PowerSupplyCable Min.4 Type60245IEC66

2Cable+Earth

(Ground)

1Φ230V

ConnectionCable Min.1.5 Type60245IEC57

3Cable+Earth

(Ground)

1Φ230V

CableLength:Limitvoltagedroptolessthan2%.Increasecablegaugeifvoltagedropis

2%ormore.

Model

Breaker capacity

[A]

Earth leakage breaker

[mA]

30/36model Min.25 30

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

region’sregulations.

• Selectthebreakerso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)

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2.5. Additional charge amount

CAUTION

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

ofwork.

2.5.1. For Pre-charge length

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

2.5.2. If additional refrigerant is required

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

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

Additional charging amount

L1(*1)>Pre-chargelength

Refrigerant pipe size

[mm (in.)]

Piping length

~30m 40m 50m g/m

Liquid 9.52(3/8)

None 400g 800g 40g/m

Gas 15.88(5/8)

*1:Referto“View”inthetableof“2.3.1.Refrigerantpipesizeandallowablepipinglength”.

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.

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pub-

lic,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.

3.1.1. Single outdoor unit installation

When the upward area is open (Unit:mm)

(1) Obstaclesatrearonly

100

ormore

(2) Obstaclesatrearandsides

250

ormore

100

ormore

100

ormore

(3) Obstaclesatfrontonly

500ormore

(4)Obstaclesatfrontandrear

500ormore

100ormore

When an obstruction is present also in the upward area (Unit:mm)

(1) Obstaclesatrearandabove

300

ormore

Max.500

1000

ormore

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

1000

ormore

200

ormore

250

ormore

500

ormore

Max.500

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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 upward area is open (Unit:mm)

(1) Obstaclesatrearonly

300

ormore

250

ormore

(2)Obstaclesatfrontonly

1500

ormore

250

ormore

(3)Obstaclesatfrontandrear

500ormore

1500ormore

250

ormore

When an obstruction is present also in the upward area (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.

1500

ormore

500ormore

250

ormore

Max.300

1500

ormore

3.1.3. Outdoor units installation in multi row

(Unit:mm)

(1)Singleparallelunitarrangement

150ormore

600ormore

1500ormore

3000ormore

(2)Multipleparallelunitarrangement

500ormore

600ormore

1500ormore

250



or

3500ormore

250



or

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. 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.

• 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

• 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)

147

AIR

650

143

50 50

354

Bolt

20mm

Nut

Block

CAUTION

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

erwise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preven-

tionfencingisrecommendedwhenblowingand

driftingsnowiscommontotheregion.

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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anddraincaps,

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)

Drainpipemountinghole

Baseoftheoutdoorunit

Drainpipe

 (Unit:mm)

270

265

170

352

267

680

Draincapmountinghole×3

Drainpipemounting

hole×1

AIR

3.5. Pipe installation

3.5.1. Opening a knock out hole

CAUTION

• Becarefulnottodeformorscratchthepanelwhileopeningtheknockoutholes.

• Toprotectthepipinginsulationafteropeningaknockouthole,removeanyburrs

fromtheedgeofthehole.Itisrecommendedtoapplyrustpreventionpainttothe

edgeofthehole.

• Pipescanbeconnectedfrom4directions,front,lateralside,rearsideandbottom.

(Fig.A)

• Whenconnectingatthebottom,removetheservicepanelandpipingcoveronthe

frontoftheoutdoorunit,andopentheknockoutholeprovidedatthebottomcorner

ofthepipingoutlet.

• Itcanbeinstalledasshownon“Fig.B”cuttingoutthe2slitsasindicatedon“Fig.C”.

(Whencuttingslits,useasteelsaw.)

Fig. A

Servicecover

Front

connection

Bottom

connection

Lateral

connection

Rear

connection

Fig. B Fig. C

Bottom

connection

Slit

3.5.2. Pipe connection

■ Brazing

CAUTION

• Ifairoranothertypeofrefrigerantenterstherefrigerationcycle,theinternal

pressureintherefrigerationcyclewillbecomeabnormallyhighandpreventtheunit

fromexertingitsfullperformance.

• Applynitrogengaswhilebrazingthepipes.Ifapipeisbrazedwithoutapplying

nitrogengas,anoxidationlmwillbecreated.

Thiscandegradeperformanceordamagetheparts

intheunit(suchasthecompressororvalves).

Nitrogengaspressure:0.02MPa

(=pressurefeltsufcientlyonthebackofthehand)

• Forbrazingmaterial,usephosphorcopper

thatdoesnotrequireux.Donotuseuxto

brazepipes.Iftheuxisthechlorinetype,itwill

causethepipestocorrode.

Furthermore,iftheuxcontainsuoride,itwilladverselyaffecttherefrigerantpipe

systemsuchasbydegradingtherefrigerant.

Ifuorideiscontained,qualityofrefrigerantdeterioratesandaffectstherefrigerant

pipingsystem.

■ Flaring

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.

• UsespecialpipecutterandaretoolexclusiveforR410A.

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

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

burrs.

(3) 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.

Leakageofrefrigerantmayresultifotherarenutsareused.

(4) Protectthepipesbypinchingthemorwithtapetopreventdust,dirt,orwaterfrom

enteringthepipes.

Checkif[L]isareduniformlyand

isnotcrackedorscratched.

Pipe

Die

Pipe outside diameter

[mm (in.)]

Dimension A [mm]

Dimension B

0.4

[mm]

Flare tool for R410A,

clutch type

6.35(1/4)

0to0.5

9.1

9.52(3/8)

13.2

12.70(1/2)

16.6

15.88(5/8)

19.7

19.05(3/4)

24.0

Pressureregulatingvalve

Cap

Brazingarea

Nitrogengas

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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)

5.2.5. Handling precautions for the valves

• Mountedpartofblankcapissealedforprotection.

• Fastenblankcaptightlyafteropeningvalves.

Table A

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

6.35(1/4) 20to25(200to250)

9.52(3/8) 20to25(200to250)

12.70(1/2) 28to32(280to320)

15.88(5/8) 30to35(300to350)

19.05(3/4) 35to40(350to400)

Operating the valves

• Useahexagonwrench(size4mm).

• Opening (1)Insertthehexagonwrenchintothevalveshaft,andturnit

counterclockwise.

(2)Stopturningwhenthevalveshaftcannolongerbeturned.

(Openposition)

• Closing (1)Insertthehexagonwrenchintothevalveshaft,andturnitclockwise.

(2)Stopturningwhenthevalveshaftcannolongerbeturned.

(Closedposition)

Openingdirection

Hexagonwrench

Seal(blankcap

installationportion)

Liquidpipe

Gaspipe

Openingdirection

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compres-

sor

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.

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

(2) Pressurizenitrogengasto4.15MPatoperformthesealingtest.

(3) Addnitrogengastoboththeliquidpipesandthegaspipes.

(4) Checkallaredandbrazedconnections.Then,checkthatthepressurehasnot

decreased.

(5) 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.

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

(7) Aftercompletingthesealingtest,releasethenitrogengasfrombothvalves.

(8) Releasethenitrogengasslowly.

• WhenusingconventionalaretoolstoareR410Apipes,thedimensionAshould

beapproximately0.5mmmorethanindicatedinthetable(foraringwithR410A

aretools)toachievethespeciedaring.Useathicknessgaugetomeasurethe

dimensionA.

Widthacrossats

Pipe outside

diameter [mm (in.)]

Width across ats

of Flare nut [mm]

6.35(1/4) 17

9.52(3/8) 22

12.70(1/2) 26

15.88(5/8) 29

19.05(3/4) 36

■ Bending pipes

CAUTION

• Topreventbreakingofthepipe,avoidsharpbends.Bendthepipewitharadiusof

curvatureof100mmto150mm.

• Ifthepipeisbentrepeatedlyatthesameplace,itwillbreak

• Ifpipesareshapedbyhand,becarefulnottocollapsethem.

• Donotbendthepipesatanangleofmorethan90°.

• Whenpipesarerepeatedlybentorstretched,thematerialwillharden,makingit

difculttobendorstretchthemanymore.

• Donotbendorstretchthepipesmorethanthreetimes.

■ Connecting pipes

CAUTION

• Besuretoinstall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outdoorunitpipeuntilimmediatelybefore

connectingtheconnectionpipe.

• Afterinstallingthepiping,makesurethattheconnectionpipesdonottouchthe

compressororouterpanel.Ifthepipestouchthecompressororouterpanel,they

willvibrateandproducenoise.

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

(2) Centerthepipeagainsttheportontheoutdoorunit,andthenturnthearenutby

hand.

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

3-wayvalve(Liquid)

3-wayvalve(Gas)

Flarenut

Connectionpipe

(Liquid)

Flarenut

Connectionpipe

(Gas)

(4) Aftertighteningthearenutbyhand,useatorquewrenchtofullytightenit.

CAUTION

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

totightenthearenutcorrectly.

• 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.

• Outerpanelmaybedistortediffastenedonlywithawrench.Besuretoxthe

elementarypartwithaspannerandfastenwithawrench.(Refertothefollowing

gure.)

• Donotapplyforcetotheblankcapofthevalveorhangawrench,etc.,onthecap.Itmay

causeleakageofrefrigerant.

90°

Flarenut

Torquewrench

Holding

wrench

Torquewrench

Topreventgasleakage,coatthe

aresurfacewithrefrigeratoroil.

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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)

Servicehose

Servicehosewithvalvecore

Chargingport

Blankcap

Hexagonwrench

Connectingpipe

Gaugemanifold

Vacuumpump

Chargingportcap

3-wayvalve

Usea4mm

hexagon

wrench

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”.

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composi-

tion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compres-

sor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.

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WARNING

• 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.

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.

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

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

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

• Donotfastenthepowersupplycableandconnectioncabletogether.

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

mum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.



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)



Knock out holes for wiring

CAUTION

• Becarefulnottodeformorscratchthepanelwhileopeningtheknockoutholes.

• Whencablesareroutedfromtheunit,aprotectionsleevefortheconduitscanbe

insertedattheknockouthole.

• Ifyoudonotuseawireconduit,besuretoprotectthewirestopreventtheedgeof

theknockoutholefromcuttingthewires.

• Itisrecommendedtoapplyanti-rustpainttotheedgeoftheknockouthole.

• Knockoutholesareprovided2eachinthesamesizeinfront,lateralandrearsides.

Installation method of One-touch bush

Pleasextheone-touchbush(accessory)asshownbelow.

(Pipecoverrear)

(Pipecoverfront)

One-touchbush

(accessories)

One-touchbush

(accessories)

Frontconnection

Lateralconnection

Rearconnection

NOTES:Pleaseensurethatthepowersupplycableandconnectioncablesarenot

installedthroughthesamecablebushholeopening.Theymustbeinstalledinto

thetwoseparateholeopeningstopreventdamagetothecable.



Wiring method

CAUTION

Whenconnectingthepowersupplycable,makesurethatthephaseofthepower

supplymatcheswiththephaseoftheterminalboard.Ifthephasesdonotmatch,the

compressorwillrotateinreverseandwillnotbeabletocompress.

● Connection diagrams

Powersupply

Outdoorunit

sideterminal

Indoorunit

sideterminal

Powerline

EARTH

(GROUND)

EARTH

(GROUND)

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● Cable preparation

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

Earth(Ground)

wire

30mm

Powersupplycableor

Connectioncable

35mm

● Wiring procedure

(1) •Removethetappingscrews.(2places)

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

Servicecover

Screws

Directionofthe

servicecover

removal

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

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

Terminalblocks

Usethespecied

wiretypeand

connectitsecurely.

Firmlysecurecable

clampsowire

terminationswillnot

receiveexternalstress.

Cabletie

Connectioncable

Powersupplycable

Indoor

unit

EARTH

(GROUND)

(4) Securethecablesusingthecabletieattachedtothebaseofthevalves.

Cableclamp

Cabletie

(5) Puttheservicecoverbackaftercompletionofthework.

  Replacethetappingscrews.(2places)

Servicecover

Directionofthe

servicecover

attachment

4. TEST RUN

4.1. Pre-test run check items

Check items

Istheoutdoorunitsecurelyinstalled?

Haveyouperformedgasleakageinspection?

(Connectionjointsofvariouspipes(angeconnection,brazing))

Istheheatinsulationdonecompletely?

(Gaspipe,liquidpipe,drainhoseextensiononindoorunitsideetc.)

Isthewaterdischargingfromdrainwithoutanyproblems?

Arethecablesconnectedcorrectly?

Arethecablesasperspecications?

Istheearth(ground)wireconnectedaccurately?

Arethereanyobstaclesblockingthesuctiongate,andoutletof

theindoor/outdoorunits?

Haveyoulledthespeciedamountofrefrigerant?

Arethestopvalvesofgaspipeandliquidpipefullyopen?

Hasthepowerbeensuppliedtocrankcaseheaterformorethan6hours?

Aftercheckingthattheaboveitemsareallinorder,referto“4.2.Testoperationmethod”to

testoperationtheunit.Ifthereareproblems,adjustimmediatelyandrecheck.

4.2. Test operation method

Be sure to congure test run settings only when the outdoor unit has stopped oper-

ating.

Testoperationsettingmethod(Itcanbeperformedinthefollowingtwoways)

• Setwithtestoperationsetting(refertotheinstallationmanualofindoorunitforfurther

details)availableintheremotecontroller.

• CoolingoperationandHeatingoperationcanbesetusing[SELECT]button(S133)

and[ENTER]button(S132)availableontheboardofdisplayunit.

(Makesuretoperformthersttestoperationwithcoolingoperation.)

Setasperthefollowingprocedure.

• Dependingonthecommunicationstatusbetweentheindoorandoutdoorunits,

itmaytakeseveralminutesforthesystemtostartoperatingaftersettingsforthe

testrunarecomplete.

• Afterthetestrunsettingsarecomplete,theoutdoorunitsandtheconnected

indoorunitswillstartoperating.Roomtemperaturecontrolwillnotactivateduring

testoperation(continuousoperation).

• Ifaknockingsoundcanbeheardintheliquidcompressionofthecompressor,

stoptheunitimmediatelyandthenenergizethecrankcaseheaterforasufcient

lengthoftimebeforerestartingtheoperation.

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6 6 6 6 6

LEDdisplaypart

Buttonpart

4.2.1. Setting method on outdoor unit board

(1) Turnonthepoweroftheoutdoorunitandenterstandbymode.

“POWER/MODE”displaylightson.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

●

○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(2) Pressthe[ENTER]button(S132)formorethan3seconds.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

○ ○ ○

Blink

○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(3) Pressthe[SELECT]button(S133),LEDofthetestrunmodeswitchedbetween

CoolingandHeating.

Coolingtestmode

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

○ ○ ○

Blink

○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

Heatingtestmode

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

○ ○

Blink

○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(4) Afterconrmingtheoperationmode,press[ENTER]button(S132).

Thedisplaychangesasfollows,andtheairconditionerstartsoperation.

Coolingtestmode

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

○ ○ ○

●

○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

Heatingtestmode

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

○ ○

●

○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(5) Press[ENTER]button(S132).

Airconditionerstopsoperation.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

●

○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

4.3. Checklist

Checkitemsduringtestoperation.

Istheoutdoorunitmakinganyabnormalnoiseorvibratingsignicantly?

Isthecoldairorhotairblowingfromindoorunitaccordingtotheoperation

mode?

Checkthatthe“ERROR”LEDblinks.

If,ithasdisplayed,checktheerrorcontentasperthe“10.2.Errorcodecheck

table”describedlater.

Operatetheunitaccordingtotheoperatingmanualprovidedwiththeindoor

unit,andcheckthatitisoperatingnormally.

5. FINISHING

WARNING

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

5.1. Installing insulation

•Installinsulationmaterialafterconducting“3.6.Sealingtest”.

•Topreventcondensationandwaterdroplets,installinsulationmaterialontherefrigerant

pipe.(Fig.A)

•Refertothetabletodeterminethethicknessoftheinsulationmaterial.

Selection of insulation

(Use an insulation material with equal heat transmission rate or below 0.040

W/(m·k))

Insulation material minimum thickness (mm)

Relative humidity ≤ 70% ≤ 75% ≤ 80% ≤ 85%

Pipediameter

(mm)

6.35 8 10 13 17

9.52 9 11 14 18

12.70 10 12 15 19

15.88 10 12 16 20

19.05 10 13 16 21

22.22 11 13 17 22

25.40 11 13 17 22

* Whentheambienttemperatureandrelativehumidityexceed32°C(DB)and85%

respectively,pleasestrengthentheheatinsulationofrefrigerantpipe.

5.2. Filling with putty

WARNING

Fillthepipingholesandwiringholeswithputty(locallypurchased)toavoidanygap

(Fig.A).Ifsmallanimalssuchasinsectsentertheexternalunit,ashortcircuitmaybe

causednearelectricalcomponentsintheservicepanel.

• Iftheoutdoorunitisinstalledatalevelthatishigherthantheindoorunit,thewater

thathascondensedinthe3-wayvalveoftheoutdoorunitcouldtraveltotheindoor

unit.Therefore,useputtyinthespacebetweenthepipeandtheinsulationtoprevent

theentryofwatertotheindoorunits.

Fig. A

Putty

Insulation

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6. HOW TO OPERATE DISPLAY UNIT

6.1. Display unit position

WARNING

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.

CAUTION

• Oncerefrigerantchargingiscompleted,besuretoopenthevalvepriorto

performingthelocalsettings.Otherwise,thecompressormayfail.

• Dischargeanystaticelectricityfromyourbodybeforetouchingthepushbuttons.

Nevertouchanyterminalorpatternofanypartsonthecontrolboard.

• Thepositionsofthebuttonsontheoutdoorunitcontrolboardareshowninthe

followinggure.

• Varioussettingscanbeadjustedbychangingpushbuttonsontheboardoftheoutdoor

unit.

Push

button

LEDdisplay

6.2. Description of display and buttons

• TheprintedcharactersfortheLEDdisplayareshownbelow.

6 6 6 6 6

LEDdisplaypart

Buttonpart

Display lamp

Function or operation method

(1)POWER/MODE Green

Lightsonwhilepoweron.Localsettinginout-

doorunitorerrorcodeisdisplayedwithblink.

(2)ERROR Red

Blinksduringabnormalairconditioner

operation.

(3)PUMPDOWN

(L1)

Orange

Lightsonduringpumpdownoperation.

(4)LOWNOISE

(L2,L3)

Orange

LightsonduringLownoisemodewhenlocal

settingisactivated.(LightingpatternofL2and

L3indicateslownoiselevel)

*Seepage14.

(5)PEAKCUT

(L4,L5,L6)

Orange

LightsonduringPeakcutmodewhenlocal

settingisactivated.(LightingpatternofL4,L5

andL6indicatespeakcutlevel)

*Seepage14.

Button

Function or operation method

S134 MODE

Toswitchbetween“Localsetting”and“Errorcode

display”.

S133 SELECT

Toswitchbetweentheindividual“Localsettings”

andthe“Errorcodedisplays”.

S132 ENTER

Toxtheindividual“Localsettings”andthe“Error

codedisplays”.

S131 EXIT Toreturnto“Operationstatusdisplays.”

S130 PUMPDOWN Tostartthepumpdownoperation.

7. FIELD SETTING

CAUTION

• Dischargethestaticelectricityfromyourbodybeforesettinguptheswitches.

• Nevertouchtheterminalsorthepatternsonthepartsthataremountedonthe

board.

7.1. Field setting buttons

• Removethefrontpaneloftheoutdoorunittoaccesstheprintcircuitboardofthe

displayunit.

Printcircuitboard

button

sforvarioussettingsandLEDdisplaysareshowninthe

gure.

6 6 6 6 6

LEDdisplaypart

Buttonpart

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7.2. Function settings

• Variousfunctionscanbeset.Followthesettingmethoddescribedin7.2.1.and7.2.2.tosetaspertherequirement.

Performthesesettingsaftertheindoorunitstops.

Table.SettingsList

No SettingItem

LEDdisplay

Factory

setting

Content

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Lownoise

modesetting

Level1

Blink

(9times)

○ ○ ○ ● ○ ○ ●

Byusingthe“Lownoisemode”,thelimitofthe

noiselevelwillbesettodecreasethenoise

level.Themodecomesin2levelswhichcan

besetaccordingly.

Toturnonthemode,usetheexternalinput

connector(P580).

*Byusingthismode,thecooling/heating

performancemaydecrease.

*Dependingontheoperatingcondition,the

noiselevelmaynotdecreaseeveniftheLow

noisemodeison.

Level2

Blink

(9times)

○ ○ ○ ● ○ ● ○

Peakcut

modesetting

Level1

Blink

(9times)

○ ○ ● ○ ○ ○ ●

Thecapacitylimitcanbeselectedwhen

operatingwiththePeakcutmode.The

operationselectioncanbedonebyexternal

inputconnector(PA580).

Thelowerthelevel,themoretheeffectof

energysaving,butthecooling/heatingperfor-

mancedecreases.

Level2

Blink

(9times)

○ ○ ● ○ ○ ● ○

Level3

Blink

(9times)

○ ○ ● ○ ○ ● ●

Level4

Blink

(9times)

○ ○ ● ○ ● ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

7.2.1. Setting for Low noise mode

(1) Switchto“Localsettingmode”bypressing[MODE]button(S134)for3secondsor

more.

(2) Conrm(POWER/MODE)blinks9times,andpress[ENTER]button(S132).

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

(9times)

○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson,():Numberofblinking

(3) Press[SELECT]button(S133),andadjustLEDdisplayasshownbelow.(Current

settingisdisplayed)

LOWNOISE

(L2) (L3)

LOWNOISE

MODE

○ Blink

Sign“

○

”:Lightsoff

(4) Press[ENTER]button(S132).

LOWNOISE

(L2) (L3)

LOWNOISE

MODE

○ ●

Sign“

○

”:Lightsoff,“

●

”:Lightson

(5) Press[SELECT]button(S133),andadjustLEDdisplayasshowninbelowgure.

PEAKCUT

(L4) (L5) (L6)

Level1

○ ○

Blink

Level2

○

Blink

○

Sign“

○

”:Lightsoff

ThenoiseofLevel2islowerthantheoneofLevel1.

(6) Press[ENTER]button(S132)andxit.

PEAKCUT

(L4) (L5) (L6)

Level1

○ ○

●

Level2

○

●

○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(7) Returnto“Operatingstatusdisplays”(normaloperation)bypressing[EXIT]button

(S131).

• Incaseofmissinghowmanytimes[SELECT]and[ENTER]buttonsarepressed,

restartfromthebeginningofoperationprocedureafterreturningto“Operationstatus

displays”(normaloperation)bypressingthe[EXIT]button(S131)once.

7.2.2. Setting for Peak cut mode

(1) Switchto“Localsettingmode”bypressing[MODE]button(S134)for3secondsor

more.

(2) Conrm(POWER/MODE)blinks9times,andpress[ENTER]button(S132).

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

(9times)

○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson,():Numberofblinking

(3) Press[SELECT]button(S133),andadjustLEDdisplayasshownbelow.(Current

settingisdisplayed)

LOWNOISE

(L2) (L3)

PEAKCUT

MODE

Blink

○

Sign“

○

”:Lightsoff

(4) Press[ENTER]button(S132).

LOWNOISE

(L2) (L3)

PEAKCUT

MODE

● ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(5) Press[SELECT]button(S133),andadjustLEDdisplayasshowninbelowgure.

PEAKCUT

(L4) (L5) (L6)

Level1 0%ofratedinputratio

○ ○ Blink

Level2 50%ofratedinputratio

○ Blink ○

Level3 75%ofratedinputratio

○ Blink Blink

Level4 100%ofratedinputratio

Blink

○ ○

Sign“

○

”:Lightsoff

9379069984_IM.indb 14 9/2/2019 09:52:36

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(6) Press[ENTER]button(S132)andxit.

PEAKCUT

(L4) (L5) (L6)

Level1 0%ofratedinputratio

○ ○ ●

Level2 50%ofratedinputratio

○ ● ○

Level3 75%ofratedinputratio

○ ● ●

Level4 100%ofratedinputratio

● ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(7) Returnto“Operatingstatusdisplays”(normaloperation)bypressing[EXIT]button

(S131).

• Whenpressednumberislostduringoperation,restartfromthebeginningof

operationprocedureafterreturningto“Operationstatusdisplays”(normaloperation)

bypressingthe[EXIT]buttononce.

8. EXTERNAL INPUT AND OUTPUT

8.1. External input

8.1.1. Wiring of connector

On/Offofthe“Lownoisemode”and“Peakcutmode”functionscanbeenabledwithan

externalelddevice.

Wheninstallingconnectioncable,speciedpart(optionalparts)mustbeused.

Refertosection“7.2.Functionsettings”,fortherequiredfunction.Thefunctionmustbe

setfortheexternalinputtowork.

Input Connector

Lownoisemode P580

Peakcutmode PA580

*MakethedistancefromthePCboardtotheconnectedunitwithin10m(33ft).

•Contactcapacity:24VDCormore,10mAormore.

P580

PA580

Circuitdiagramexample

Outdoorunitcontrol

PCboard

Connectedunit

(Locallypurchased)

Ex.)Switch

Signal

Connector

*10m(33ft)

Connectioncable(option)

8.1.2. Low noise mode (P580)

•Thisfeaturesreducestheoperatingsoundoftheoutdoorunitfromthenormalsound.

TheairconditionerissettoLownoisemodewhenclosingthecontactinputofa

commercialtimerorOn/OffswitchtoaconnectorontheoutdoorcontrolPCboard.

*Performancemaydropdependingontheoutsideairtemperaturecondition,etc.

*Setthe“Lownoisemode”level,referto“7.2.Functionsettings”.

InputSignal···On:Lownoisemode

···Off:Normaloperation

InputSignal

Lownoisemode

Off

8.1.3. Peak cut mode (PA580)

•Operationthatsuppressedthecurrentvaluecanbeperformedbymeansofthe

connectedunit.TheairconditionerissettothePeakcutmodebyapplyingthecontact

inputofacommercialOn/OffswitchtoaconnectorontheoutdoorcontrolPCboard.

*Setthe“Peakcutmode”level,referto“7.2.Functionsettings”.

InputSignal···On:Peakcutmode

···Off:Normaloperation

InputSignal

Peakcutmode

Off

8.2. External output

8.2.1. Wiring of connector

Wheninstallingconnectioncable,speciedpart(optionalparts)mustbeused.

Output Connector

Errorstatus P590

Compressorstatus PA590

*MakethedistancefromthePCboardtotheconnectedunitwithin10m(33ft).

Load

•Load:DC50mAorlessisrecommended

Indoorunit

controlPCB

Example:

Relayunit

Connectedunit(Locallypurchased)

Example:Fan

Signal

*10m

(33ft)

Connector

Relay

power

supply

P590

PA590

Circuitdiagramexample

8.2.2. Error status output (P590)

Anairconditionererrorstatussignalisproducedwhenamalfunctionoccurs.

Errorstatus

Outputsignal

Error

Normal

Off

8.2.3. Compressor status output (PA590)

Compressoroperationstatussignalisproducedwhenthecompressorisrunning.

Compressorstatus

Outputsignal

Operation

Stop

Off

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9. PUMP DOWN

WARNING

• 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2-way

or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agroupcontrolsysteminstallation,donotturnthepoweroffuntilthepump

downiscompletedinalloutdoorunits.



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

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

• Operate[PUMPDOWN]button(S130)onthedisplayboardwiththefollowing

procedure.

Push

button

LEDdisplay

6 6 6 6 6

LEDdisplaypart

Buttonpart

9.1. Preparation for pump down

• Conrmthatthepowerisoff,andthenopentheservicepanel.

9.2. Pump down procedure

(1) Checkthe3-wayvalves(boththeliquidsideandgasside)areopened.

(2) Turnthepoweron.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

● ○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(3) Press[PUMPDOWN]button(S130)for3secondsormoreafter3minutesafter

poweron.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

● ○ ● ○ ○ ● ● ●

Sign“

○

”:Lightsoff,“

●

”:Lightson

LEDdisplaylightsonasshownintheabovetable,andthefansandthe

compressorstartoperating.

• Ifthe[PUMPDOWN]button(S130)ispressedwhilethecompressorisoperating,

thecompressorwillstop,thenstartagaininabout3minutes.

(4) LEDdisplaywillchangeasshownbelowabout3minutesafterthecompressor

starts.Fullyclosethe3-wayvalveontheliquidpipesideatthisstage.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

● ○ ● ○ ○ ○ ● ●

Sign“

○

”:Lightsoff,“

●

”:Lightson

• Ifthevalveontheliquidpipesideisnotclosed,thepumpdowncannotbeperformed.

(5) WhenLEDdisplaychangesasshowninthefollowingtable,closethe3-wayvalve

onthegaspipesidetightly.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

● ○ ● ○ ○ ○ ○ ●

Sign“

○

”:Lightsoff,“

●

”:Lightson

• Ifthevalveonthegaspipesideisnotclosed,refrigerantmayowintothepiping

afterthecompressorstops.

Step(5)

Closingdirection

Step(4)

Hexagonwrench

Liquidpipe

Gaspipe

Closingdirection

(6) LEDdisplaychangesafter1minuteasshowninthetable.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

● ○ ● ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

Fansandcompressorstopautomatically.

• Ifthepumpdownissuccessfullycompleted(theaboveLEDdisplayisshown),the

outdoorunitremainsstoppeduntilthepoweristurnedoff.

(7) Turnthepoweroff.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

○ ○ ○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff

Pumpdowniscompleted.

NOTES:

• Tostoppumpdown,pressthe[PUMPDOWN]button(S130)again.

• Tostartthepumpdownagainafterthecompressorisautomaticallystoppeddue

toanerror,turnthepoweroffandopenthe3-wayvalves.Wait3minutes,turnthe

poweronandstartthepumpdownagain.

• Whenstartingtheoperationaftercompletionofthepumpdown,turnthepoweroff,

andthenopenthe3-wayvalves.Wait3minutes,turnthepoweronandperforma

testruninCoolingoperationmode.

• Ifanerroroccurs,recovertherefrigerantfromserviceport.

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10.1. Error display mode

Displaywhenanerroroccurs.

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

●

Blink

(Hispeed)

○ ○ ○ ○ ○ ○

Sign“

○

”:Lightsoff,“

●

”:Lightson

(1) Checkthatthe“ERROR”LEDblinks,thenpressthe[ENTER]button(S132)once.

10.2. Error code check table

DESCRIPTION REMARK

LEDdisplay

POWER/

MODE

ERROR

PUMP

DOWN

LOWNOISE PEAKCUT

(L1) (L2) (L3) (L4) (L5) (L6)

Serialcommunicationerror

Serialforwardtransmissionerrorimmediatelyafter

operation

Blink

(2times)

●

Blink

(1time)

Blink

(1time)

○ ○ ● ●

Serialforwardtransmissionerrorduringoperation

Blink

(2times)

●

Blink

(1time)

Blink

(1time)

○ ● ○ ○

Indoorunitcapacityerror Indoorunitcapacityerror

Blink

(2times)

●

Blink

(2times)

Blink

(2times)

○ ○ ○ ●

Indooruniterror Indooruniterror

Blink

(2times)

●

Blink

(5times)

Blink

(15times)

○ ○ ○ ●

OutdoorunitmainPCBerror OutdoorunitPCBmodelinformationerror

Blink

(2times)

●

Blink

(6times)

Blink

(2times)

○ ○ ○ ●

InverterPCBerror Invertererror

Blink

(2times)

●

Blink

(6times)

Blink

(3times)

○ ○ ○ ●

IPMerror TripterminalLerror

Blink

(2times)

●

Blink

(6times)

Blink

(5times)

○ ○ ● ●

Dischargetemp.sensorerror Dischargetemp.sensor1error

Blink

(2times)

●

Blink

(7times)

Blink

(1time)

○ ○ ○ ●

Compressortemp.sensorerror Compressortemp.sensor1error

Blink

(2times)

●

Blink

(7times)

Blink

(2times)

○ ○ ○ ●

OutdoorunitHeatEx.sensorerror

HeatEx.centertemp.sensorerror

Blink

(2times)

●

Blink

(7times)

Blink

(3times)

○ ○ ● ○

OutdoorunitHeatEx.liquidtemp.sensorerror

Blink

(2times)

●

Blink

(7times)

Blink

(3times)

○ ○ ● ●

Outdoortemp.sensorerror Outdoortemp.sensorerror

Blink

(2times)

●

Blink

(7times)

Blink

(4times)

○ ○ ○ ●

Heatsinktemp.sensorerror Heatsinktemp.sensorerror

Blink

(2times)

●

Blink

(7times)

Blink

(7times)

○ ○ ○ ●

Currentsensorerror Currentsensor1error(stoppagepermanently)

Blink

(2times)

●

Blink

(8times)

Blink

(4times)

○ ○ ○ ●

Pressuresensorerror

Highpressureswitch1error

Blink

(2times)

●

Blink

(8times)

Blink

(6times)

○ ● ○ ○

Pressuresensorerror

Blink

(2times)

●

Blink

(8times)

Blink

(6times)

○ ● ● ○

Tripdetection Tripdetection

Blink

(2times)

●

Blink

(9times)

Blink

(4times)

○ ○ ○ ●

Compressormotorcontrolerror Rotorpositiondetectionerror(stoppagepermanently)

Blink

(2times)

●

Blink

(9times)

Blink

(5times)

○ ○ ○ ●

Outdoorunitfanmotor1error Dutyabnormal

Blink

(2times)

●

Blink

(9times)

Blink

(7times)

○ ○ ● ●

Outdoorunitfanmotor2error Dutyabnormal

Blink

(2times)

●

Blink

(9times)

Blink

(8times)

○ ○ ● ●

4-wayvalveerror 4-wayvalveerror

Blink

(2times)

●

Blink

(9times)

Blink

(9times)

○ ○ ○ ●

Dischargetemp.1error Dischargetemp.1error

Blink

(2times)

●

Blink

(10times)

Blink

(1time)

○ ○ ○ ●

Compressortemp.error Compressor1temp.error

Blink

(2times)

●

Blink

(10times)

Blink

(3times)

○ ○ ○ ●

Pressureerror2 Lowpressureerror

Blink

(2times)

●

Blink

(10times)

Blink

(5times)

○ ○ ○ ●

IPMerror Temp.error

Blink

(2times)

●

Blink

(6times)

Blink

(5times)

○ ○ ○ ●

Heatsinktemp.error Heatsinktemp.error

Blink

(2times)

●

Blink

(10times)

Blink

(12times)

○ ○ ● ●

Sign“

○

”:Lightsoff,“

●

”:Lightson

10. ERROR CODES

YoucandeterminetheoperatingstatusbythelightingonandblinkingoftheLEDdisplay.

6 6 6 6 6

LEDdisplaypart

Buttonpart

9379069984_IM.indb 17 9/2/2019 09:52:40

Fujitsu AOHG36KMTA Installation guide

Brand: Fujitsu

Model: AOHG36KMTA

Type: Installation guide

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Fujitsu AOHG36KMTA Installation guide

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