Fujitsu AOHG36KMTA Installation guide

AOHG36KMTA
Fujitsu
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
2
.
• 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INPUTAND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
2
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
1
Thismanual
Drainpipe
1
Foroutdoorunitdrainpipingwork
(Maynotbesupplied,dependingon
themodel.)
Draincap
3
One-touchbush
2
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]
50
*1
Min.pipinglength(L1)
[m]
5
Max.heightdifference(H1)
<Indoorunittooutdoorunit>
[m]
30
View(Example)
L1
H1
*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>
*1
(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]
30
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
more
3500ormore
250
or
more
NOTES:
• Ifthespaceislargerthanstatedabove,theconditionwillbethesameaswhenthere
isnoobstacle.
• Wheninstallingtheoutdoorunit,besuretoopenthefrontandleftsidetoobtain
betteroperationefciency.
3.2. 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
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
16
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
49
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
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.
B
Pipe
A
Die
Pipe outside diameter
[mm (in.)]
Dimension A [mm]
Dimension B
-
0
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.
9379069984_IM.indb 8 9/2/2019 09:52:19
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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
s
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)
1
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)
○ ○ ○ ● ○ ● ○
2
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
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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
On
On
Off
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
On
On
Off
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
1
2
1
2
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
On
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
On
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
s
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
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Fujitsu AOHG36KMTA Installation guide

AOHG36KMTA
Fujitsu
Brand
Fujitsu
Model
AOHG36KMTA
Type
Installation guide
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