Fujitsu ROG18KBTA2 Installation guide

ROG18KBTA2
Fujitsu
Brand
Fujitsu
Model
ROG18KBTA2
Category
Split-system air conditioners
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
beforetheworkiscompletedcancauseseriousaccidentssuchaselectricshockor
re.
• Ifrefrigerantleakswhileworkisbeingcarriedout,ventilatethearea.Iftherefrigerant
comesincontactwithaame,itproducesatoxicgas.
• Installationmustbeperformedinaccordancewithregulations,codes,orstandards
forelectricalwiringandequipmentineachcountry,region,ortheinstallationplace.
• Donotusethisequipmentwithairoranyotherunspeciedrefrigerantintherefriger-
antlines.Excesspressurecancausearupture.
• Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybeforeyou
runthecompressor.
Donotoperatethecompressorundertheconditionofrefrigerantpipingnotattached
properlywith3-wayvalveopen.Thismaycauseabnormalpressureintherefrigera-
tioncyclethatleadstoruptureandeveninjury.
• Wheninstallingorrelocatingtheairconditioner,donotmixgasesotherthanthe
speciedrefrigerant(R32)toentertherefrigerantcycle.
Ifairorothergasenterstherefrigerantcycle,thepressureinsidethecyclewillriseto
anabnormallyhighvalueandcauserupture,injury,etc.
• Toconnecttheindoorunitandoutdoorunit,useairconditionerpipingandcables
availablelocallyasstandardparts.Thismanualdescribesproperconnectionsusing
suchinstallationset.
• Donotmodifypowercable,useextensioncableorbranchwiring.Improperusemay
causeelectricshockorrebypoorconnection,insufcientinsulationorovercurrent.
• Donotpurgetheairwithrefrigerantsbutuseavacuumpumptovacuumtheinstalla-
tion.
• Thereisnotextrarefrigerantintheoutdoorunitforairpurging.
• UseavacuumpumpforR32orR410Aexclusively.
• Usingthesamevacuumpumpfordifferentrefrigerantsmaydamagethevacuum
pumportheunit.
• UseacleangaugemanifoldandcharginghoseforR32orR410Aexclusively.
• Donotusemeanstoacceleratethedefrostingprocessortoclean,otherthanthose
recommendedbythemanufacturer.
• Theapplianceshallbestoredinaroomwithoutcontinuouslyoperatingignition
sources(forexample:openames,anoperatinggasapplianceoranoperating
electricheater).
• Donotpierceorburn.
• Beawarethatrefrigerantsmaynotcontainanodour.
• Duringthepump-downoperation,makesurethatthecompressoristurnedoffbefore
youremovetherefrigerantpiping.
Donotremovetheconnectionpipewhilethecompressorisinoperationwith3-way
valveopen.
Thismaycauseabnormalpressureintherefrigerationcyclethatleadstoruptureand
eveninjury.
• Thisapplianceisnotintendedforusebypersons(includingchildren)withreduced
physical,sensoryormentalcapabilities,orlackofexperienceandknowledge,unless
theyhavebeengivensupervisionorinstructionconcerninguseoftheappliancebya
personresponsiblefortheirsafety.Childrenshouldbesupervisedtoensurethatthey
donotplaywiththeappliance.
CAUTION
• Fortheairconditionertoworkappropriately,installitaswritteninthismanual.
• Theapplianceshallnotbeinstalledinanunventilatedspace,ifthatspaceissmaller
than1.61m
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.
AIRCONDITIONER
OUTDOORUNIT
INSTALLATION MANUAL
PARTNo.9319205281-02
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................................................................5
2.5.Additionalchargeamount............................................................6
2.6.Generalinformation.....................................................................6
3.INSTALLATIONWORK..........................................................................6
3.1.Installationdimensions................................................................6
3.2.Mountingtheunit.........................................................................7
3.3.Removingandreplacingpart.......................................................8
3.4.Draininstallation..........................................................................8
3.5.Pipeinstallation...........................................................................8
3.6.Sealingtest..................................................................................9
3.7.Vacuumprocess..........................................................................9
3.8.Additionalcharging....................................................................10
3.9.Electricalwiring..........................................................................10
4.TESTRUN............................................................................................12
4.1.MakeaTESTRUNinaccordancewiththeinstallation
Manualfortheindoorunit.......................................................... 12
5.FINISHING...........................................................................................12
5.1.Installinginsulation....................................................................12
6.PUMPDOWN.......................................................................................12
9319205281-02_IM.indb 1 18-Jun-19 3:07:20 PM
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2-7.Checkstotherefrigerationequipment
• Whereelectricalcomponentsarebeingchanged,theyshallbetforthepurpose
andtothecorrectspecication.
• Atalltimesthemanufacturer’smaintenanceandserviceguidelinesshallbefollowed.
• Ifindoubtconsultthemanufacturer’stechnicaldepartmentforassistance.
• Thefollowingchecksshallbeappliedtoinstallationsusingammablerefrigerants.
-Thechargesizeisinaccordancewiththeroomsizewithinwhichtherefrigerant
containingpartsareinstalled.
-Theventilationmachineryandoutletsareoperatingadequatelyandarenot
obstructed.
-Ifanindirectrefrigeratingcircuitisbeingused,thesecondarycircuitshallbe
checkedforthepresenceofrefrigerant.
-Markingtotheequipmentcontinuestobevisibleandlegible.Markingsandsigns
thatareillegibleshallbecorrected.
-Refrigerationpipeorcomponentsareinstalledinapositionwheretheyareunlikely
tobeexposedtoanysubstancewhichmaycorroderefrigerantcontainingcompo-
nents,unlessthecomponentsareconstructedofmaterialswhichareinherently
resistanttobeingcorrodedoraresuitablyprotectedagainstbeingsocorroded.
2-8.Checkstoelectricaldevices
• Repairandmaintenancetoelectricalcomponentsshallincludeinitialsafetychecks
andcomponentinspectionprocedures.
• Ifafaultexiststhatcouldcompromisesafety,thennoelectricalsupplyshallbe
connectedtothecircuituntilitissatisfactorilydealtwith.
• Ifthefaultcannotbecorrectedimmediatelybutitisnecessarytocontinueopera-
tion,anadequatetemporarysolutionshallbeused.
• Thisshallbereportedtotheowneroftheequipmentsoallpartiesareadvised.
• Initialsafetychecksshallinclude.
-Thatcapacitorsaredischarged:thisshallbedoneinasafemannertoavoid
possibilityofsparking.
-Thattherenoliveelectricalcomponentsandwiringareexposedwhilecharging,
recoveringorpurgingthesystem.
-Thatthereiscontinuityofearthbonding.
3.Repairstosealedcomponents
• Duringrepairstosealedcomponents,allelectricalsuppliesshallbedisconnected
fromtheequipmentbeingworkeduponpriortoanyremovalofsealedcovers,etc.
• Ifitisabsolutelynecessarytohaveanelectricalsupplytoequipmentduringservic-
ing,thenapermanentlyoperatingformofleakdetectionshallbelocatedatthe
mostcriticalpointtowarnofapotentiallyhazardoussituation.
• Particularattentionshallbepaidtothefollowingtoensurethatbyworkingon
electricalcomponents,thecasingisnotalteredinsuchawaythatthelevelof
protectionisaffected.
• Thisshallincludedamagetocables,excessivenumberofconnections,terminals
notmadetooriginalspecication,damagetoseals,incorrectttingofglands,etc.
• Ensurethatapparatusismountedsecurely.
• Ensurethatsealsorsealingmaterialshavenotdegradedsuchthattheynolonger
servethepurposeofpreventingtheingressofammableatmospheres.
• Replacementpartsshallbeinaccordancewiththemanufacturer’sspecications.
NOTE:Theuseofsiliconsealantmayinhibittheeffectivenessofsometypesofleak
detectionequipment.
Intrinsicallysafecomponentsdonothavetobeisolatedpriortoworkingon
them.
4.Repairtointrinsicallysafecomponents
• Donotapplyanypermanentinductiveorcapacitanceloadstothecircuitwithout
ensuringthatthiswillnotexceedthepermissiblevoltageandcurrentpermittedfor
theequipmentinuse.
• Intrinsicallysafecomponentsaretheonlytypesthatcanbeworkedonwhilelivein
thepresenceofaammableatmosphere.
• Thetestapparatusshallbeatthecorrectrating.
• Replacecomponentsonlywithpartsspeciedbythemanufacturer.
• Otherpartsmayresultintheignitionofrefrigerantintheatmospherefromaleak.
5.Cabling
• Checkthatcablingwillnotbesubjecttowear,corrosion,excessivepressure,vibra-
tion,sharpedgesoranyotheradverseenvironmentaleffects.
• Thecheckshallalsotakeintoaccounttheeffectsofagingorcontinualvibration
fromsourcessuchascompressorsorfans.
6.Detectionofammablerefrigerants
• Undernocircumstancesshallpotentialsourcesofignitionbeusedinthesearching
forordetectionofrefrigerantleaks.
• Ahalidetorch(oranyotherdetectorusinganakedame)shallnotbeused.
7.Leakdetectionmethods
• Electronicleakdetectorsshallbeusedtodetectammablerefrigerants,butthe
sensitivitymaynotbeadequate,ormayneedre-calibration.(Detectionequipment
shallbecalibratedinarefrigerant-freearea.)
• Ensurethatthedetectorisnotapotentialsourceofignitionandissuitableforthe
refrigerantused.
• LeakdetectionequipmentshallbesetatapercentageoftheLFLoftherefrigerant
andshallbecalibratedtotherefrigerantemployedandtheappropriatepercentage
ofgas(25%maximum)isconrmed.
• Leakdetectionuidsaresuitableforusewithmostrefrigerantsbuttheuseof
detergentscontainingchlorineshallbeavoidedasthechlorinemayreactwiththe
refrigerantandcorrodethecopperpipe-work.
• Ifaleakissuspected,allnakedamesshallberemoved/extinguished.
• Ifaleakageofrefrigerantisfoundwhichrequiresbrazing,alloftherefrigerantshall
berecoveredfromthesystem,orisolated(bymeansofshutoffvalves)inapartof
thesystemremotefromtheleak.
Oxygenfreenitrogen(OFN)shallthenbepurgedthroughthesystembothbefore
andduringthebrazingprocess.
Precautions for using R32 refrigerant
Thebasicinstallationworkproceduresarethesameasconventionalrefrigerant(R410A,
R22)models.
However,paycarefulattentiontothefollowingpoints:
WARNING
• Sincetheworkingpressureis1.6timeshigherthanthatofrefrigerantR22models,
someofthepipingandinstallationandservicetoolsarespecial.(See“2.1.Installation
tools”
.)
Especially,whenreplacingarefrigerantR22modelwithanewrefrigerantR32model,
alwaysreplacetheconventionalpipingandarenutswiththeR32andR410Apiping
andarenutsontheoutdoorunitside.
ForR32andR410A,thesamearenutontheoutdoorunitsideandpipecanbe
used.
• ModelsthatuserefrigerantR32andR410Ahaveadifferentchargingportthread
diametertopreventerroneouschargingwithrefrigerantR22andforsafety.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.
9319205281-02_IM.indb 2 18-Jun-19 3:07:20 PM
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.
9319205281-02_IM.indb 3 18-Jun-19 3:07:20 PM
En-4
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
[Heat&Coolmodel(Reversecycle)
only]
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
■
Protection of pipes
• Protectthepipestopreventtheentryofmoistureanddust.
• Especially,payattentionwhenpassingthepipesthroughaholeorconnectingthe
endofapipetotheoutdoorunit.
Location Working period Protection method
Outdoor
1monthormore Pinchpipes
Lessthan1month Pinchortapepipes
Indoor - Pinchortapepipes
■
Refrigerant pipe size and allowable piping length
CAUTION
• Keepthepipinglengthbetweentheindoorunitandoutdoorunitwithintheallowable
tolerance.
• Themaximumlengthsofthisproductareshowninthetable.Iftheunitsarefurther
apartthanthis,correctoperationcannotbeguaranteed.
Layoutexamplefortheindoorunitsandoutdoorunit.
OUTDOOR UNIT : 18 TYPE
H1
H2
H1
a
b
Outdoorunit
Indoorunit
UnitB
7-14
Connection
cable
Powercable
Circuitbreaker
PowerSource
230V~50Hz
Refrigerant
pipe
UnitA
7-14
● Connectable indoor unit capacity type
CAUTION
• Thetotalcapacityoftheindoorunitsconnectedmustbebetween14,000and
24,000BTU.
• Besuretochecktheconnectingpatternintechnicalmanualwheninstalledsince
connectionpatternisspeciedinit.Operationcannotbeguaranteedifconnectedby
amethodnotspeciedinit.Itcancausethefaultoftheproduct.
• Pleaseconnecttobothofindoorunitandoutdoorunitcertainly.
•Toinstallanindoorunit,refertotheinstallationManualincludedwiththeindoorunit.
Outdoor port Connectable model name
A 7-14
B 7-14
UNITBø6.35,ø9.52
UNITAø6.35,ø9.52
OUTDOOR UNIT : 14 TYPE
H1
H2
H1
a
b
Outdoorunit
Indoorunit
UnitB
7-12
Connection
cable
Powercable
Circuitbreaker
PowerSource
230V~50Hz
Refrigerant
pipe
UnitA
7-12
9319205281-02_IM.indb 4 18-Jun-19 3:07:21 PM
En-5
● Connectable indoor unit capacity type
CAUTION
• Thetotalcapacityoftheindoorunitsconnectedmustbebetween14,000and
21,000BTU.
• Besuretochecktheconnectingpatternintechnicalmanualwheninstalledsince
connectionpatternisspeciedinit.Operationcannotbeguaranteedifconnectedby
amethodnotspeciedinit.Itcancausethefaultoftheproduct.
• Pleaseconnecttobothofindoorunitandoutdoorunitcertainly.
•Toinstallanindoorunit,refertotheinstallationManualincludedwiththeindoorunit.
Outdoor port Connectable model name
A 7-12
B 7-12
UNITBø6.35,ø9.52
UNITAø6.35,ø9.52
● Limitation of refrigerant piping length
CAUTION
• Thetotalmaximumpipelengthsandheightdifferenceofthisproductareshownin
thetable.
• Iftheunitsarefurtherapartthanthis,correctoperationcannotbeguaranteed.
Total max. length (a+b) 30m
*1
Max. length for each indoor unit
(a or b)
20m
Max. height difference between out-
door unit and each indoor unit (H1)
15m
Max. height difference between
indoor units (H2)
10m
Min. length for each indoor unit
(a or b)
2.5m
Total min. length (a+b) 5m
*1
Ifthetotalpipinglengthislongerthan20m,additionalrefrigerantchargingisneces-
sary.(Formoreinformation,referto“3.8.Additionalcharging”.)
● Selecting pipe sizes
Thediametersoftheconnectionpipesdifferaccordingtothecapacityoftheindoorunit.
Refertothefollowingtablefortheproperdiametersoftheconnectionpipesbetweenthe
indoorandoutdoorunits.
Capacity of indoor
unit
Gas pipe size
(thickness) [mm]
Liquid pipe size (thick-
ness) [mm]
7–14 ø9.52(0.8) ø6.35(0.8)
CAUTION
• Operationcannotbeguaranteedifthecorrectcombinationofpipes,valves,etc.,is
notusedtoconnecttheindoorandoutdoorunits.
● Heat insulation around connection pipes requirements
CAUTION
• Installheatinsulationaroundboththegasandliquidpipes.Failuretodosomay
causewaterleaks.
• Useheatinsulationwithheatresistanceabove120°C.(Reversecyclemodelonly)
• Inaddition,ifthehumiditylevelattheinstallationlocationoftherefrigerantpipingis
expectedtoexceed70%,installheatinsulationaroundtherefrigerantpiping.Ifthe
expectedhumiditylevelis70-80%,useheatinsulationthatis15mmorthickerandif
theexpectedhumidityexceeds80%,useheatinsulationthatis20mmorthicker.
• Ifheatinsulationisusedthatisnotasthickasspecied,condensationmayformon
thesurfaceoftheinsulation.
• Inaddition,useheatinsulationwithheatconductivityof0.045W/(m·K)orless
(at20°C).
Connecttheconnectionpipesaccordingto“3.5.Pipeinstallation”inthisinstallation
Manual.
2.4. Electrical requirements
WARNING
• Alwaysuseaspecialbranchcircuitandinstallaspecialreceptacletosupplypowerto
theairconditioner.
• Useaspecialbranchcircuitbreakerandreceptaclematchedtothecapacityoftheair
conditioner.(Installinaccordancewithstandard.)
• Performwiringworkinaccordancewithstandardssothattheairconditionercanbe
operatedsafelyandpositively.
• Installaleakagespecialbranchcircuitbreakerinaccordancewiththerelatedlaws
andregulationsandelectriccompanystandards.
CAUTION
• Whenthevoltageislowandtheairconditionerisdifculttostart,contactthepower
companythevoltageraised.
• Besuretoinstallabreakerofthespeciedcapacity.
• Regulationofcablesandbreakerdiffersfromeachlocality,referinaccordancewith
localrules.
Voltage rating 1Φ230V(50Hz)
Operating range 198to264V
Cable
Cable size
(mm
2
)
*1
Type Remarks
Powersupplycable 1.5 Type60245IEC57
2cable+Earth(Ground),
1Ø230V
Connectioncable 1.5 Type60245IEC57
3cable+Earth(Ground),
1Ø230V
*1
Selectedsample:Selectthecorrectcabletypeandsizeaccordingtothecountryor
region’sregulations.
Max.wirelength:Setalengthsothatthevoltagedropislessthan2%.Increasethe
wirediameterwhenthewirelengthislong.
Breaker Specication
*2
Circuitbreaker(overcurrent) Current:15(A)
Earthleakagebreaker Leakagecurrent:30mA0.1secorless
*3
*2
Selecttheappropriatebreakerofthedescribedspecicationaccordingtothenational
orregionalstandards.
*3
Selectthebreakerthatenoughloadcurrentcanpassthroughit.
•Beforestartingworkcheckthatpowerisnotbeingsuppliedtoallpolesoftheindoorunit
andoutdoorunit.
•Installallelectricalworksinaccordancetostandard.
•Installthedisconnectdevicewithacontactgapofatleast3mminallpolesnearbythe
units.(Bothindoorunitandoutdoorunit)
•Wiringsizemustcomplywiththeapplicablelocalandnationalcode.
9319205281-02_IM.indb 5 18-Jun-19 3:07:22 PM
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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.
Refrigerantsuitableforatotalpipinglengthof20mischargedintheoutdoorunitatthe
factory.
Whenthepipingislongerthan20m,additionalchargingisnecessary.
Fortheadditionalamount,seethetablebelow.
Total piping length
20m 30m Rate
Additional
refrigerant
14 type
None 200g 20g/m
18 type
None 200g 20g/m
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
Pleaseobtaintheapprovalofthecustomerwhenselectingthelocationofinstallationand
installingthe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.
• Pleaseinstalltheoutdoorunitwithoutslant.
• Installtheoutdoorunitinawell-ventilatedlocationawayfromrainordirectsunlight.
• Iftheoutdoorunitmustbeinstalledinanareawithineasyreachofthegeneral
public,installasnecessaryaprotectivefenceortheliketopreventtheiraccess.
• Installtheoutdoorunitinalocationthatwouldnotinconvenienceyourneighbors,as
theycouldbeaffectedbytheairowcomingoutfromtheoutlet,noise,orvibration.If
itmustbeinstalledinproximitytoyourneighbors,besuretoobtaintheirapproval.
• Iftheoutdoorunitisinstalledinacoldregionthatisaffectedbysnowaccumulation,
snowfall,orfreezing,takeappropriatemeasurestoprotectitfromthoseelements.
Toensureastableoperation,installinletandoutletducts.
• Installtheoutdoorunitinalocationthatisawayfromexhaustortheventportsthat
dischargevapor,soot,dust,ordebris.
CAUTION
•
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.)
Branchswitchand
circuitbreaker
Branchswitchand
circuitbreaker
1mormore
1mormore
• 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
WARNING
• Donotinstallwherethereisthedangerofcombustiblegasleakage.
• Donotinstalltheunitnearheatsourceofheat,steam,orammablegas.
• Ifchildrenunder10yearsoldmayapproachtheunit,takepreventivemeasuresso
thattheycannotreachtheunit.
CAUTION
• Selectinstallationlocationsthatcanproperlysupporttheweightoftheindoorand
outdoorunits.Installtheunitssecurelysothattheydonottoppleorfall.
• Installtheunitwhereitwillnotbetiltedbymorethan3˚.However,donotinstallthe
unitwithittiltedtowardsthesidecontainingthecompressor.
• Wheninstallingtheoutdoorunitwhereitmayexposedtostrongwind,fastenit
securely.
• 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.
9319205281-02_IM.indb 6 18-Jun-19 3:07:22 PM
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■
Outdoor unit installation
When the upper space is open (Unit:mm)
(1)Obstaclesatrearonly
100ormore
(2)Obstaclesatrearandsides
250ormore
100ormore
100ormore
(3)Obstaclesatfront
600ormore
(4)Obstaclesatfrontandrear
600ormore
100ormore
When an obstruction in the upper space (Unit:mm)
(1)Obstaclesatrearandabove
100ormore
Max.200
600ormore
(2)Obstaclesatrear,sides,andabove
600or
more
250ormore
100ormore
Max.200
100ormore
■
Multiple outdoor unit installation
• Provideatleast250mmofspacebetweentheoutdoorunitsifmultipleunitsare
installed.
• Whenroutingthepipingfromthesideofanoutdoorunit,providespaceforthepiping.
When the upper space is open (Unit:mm)
(1)Obstaclesatrearonly
200ormore
(2)Obstaclesatfrontonly
1,000ormore
(3)Obstaclesatfrontandrear
200ormore
1,000ormore
When an obstruction in the upper space (Unit:mm)
(1)Obstaclesatrearandabove
• Upto3unitscanbeinstalledsidebyside.
• When4unitsormorearearrangedinaline,providethespaceasshownbelow.
1,500ormore
200ormore
Max.300
1,500ormore
■
Outdoor units installation multi-row
(Unit:mm)
(1)Singleparallelunitarrangement
100ormore
200ormore
500ormore
1,000ormore
(2)Multipleparallelunitarrangement
200ormore
400ormore
1,000ormore
2,000ormore
200ormore
NOTES:
• Ifthespaceislargerthanstatedabove,theconditionwillbethesameaswhenthere
isnoobstacle.
• Wheninstallingtheoutdoorunit,besuretoopenthefrontandleftsidetoobtain
betteroperationefciency.
3.2. Mounting the unit
• Install4anchorboltsatthelocationsindicatedwitharrowsinthegure.
• Toreducevibration,donotinstalltheunitdirectlyontheground.Installitonasecure
base(suchasconcreteblocks).
• Thefoundationshallsupportthelegsoftheunitandhaveawidthof50mmormore.
• Dependingontheinstallationconditions,theoutdoorunitmayspreaditsvibration
duringoperation,whichmaycausenoiseandvibration.Therefore,attachdamping
materials(suchasdampingpads)totheoutdoorunitduringinstallation.
• Installthefoundation,makingsurethatthereisenoughspaceforinstallingthe
connectionpipes.
• Securetheunittoasolidblockusingfoundationbolts.(Use4setsofcommercially
availableM10bolts,nuts,andwashers.)
• Theboltsshouldprotrude20mm.(Refertothegure.)
• Ifoverturningpreventionisrequired,purchasethenecessarycommerciallyavailable
items.
9319205281-02_IM.indb 7 18-Jun-19 3:07:24 PM
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AIR
Bottomside
Drainpipemountingplace
Since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)
Baseoftheoutdoorunit
Drainpipe
Drainpipemountinghole
3.5. Pipe installation
CAUTION
• Donotusemineraloilonaaredpart.Preventmineraloilfromgettingintothesys-
temasthiswouldreducethelifetimeoftheunits.
• Whileweldingthepipes,besuretoblowdrynitrogengasthroughthem.
• Themaximumlengthsofthisproductareshowninthetable.Iftheunitsarefurther
apartthanthis,correctoperationcannotbeguaranteed.
■
Flaring
(1) Cuttheconnectionpipetothenecessarylengthwithapipecutter.
(2) Holdthepipedownwardsothatcuttingswillnotenterthepipeandremovethe
burrs.
(3) Insertthearenutontothepipeandarethepipewithaaringtool
.
Insertthearenut(alwaysusethearenutattachedtotheindoorandoutdoor
unitsrespectively)ontothepipeandperformtheareprocessingwithaaretool.
UsethespecialR32(R410A)aretool,ortheconventional(forR22)aretool.
Whenusingtheconventionalaretool,alwaysuseanallowanceadjustmentgaugeand
securetheAdimensionshowninthefollowingtable.
Checkif[L]isareduniformlyand
isnotcrackedorscratched.
Die
A
Pipe
Pipeoutside
diameter
A(mm)
Flaringtoolfor
R32orR410A,clutchtype
Conventional(R22)Flaringtool
Clutchtype Wingnuttype
ø6.35mm(1/4")
0to0.5 1.0to1.5 1.5to2.0
ø9.52mm(3/8")
ø12.70mm(1/2")
ø15.88mm(5/8")
ø19.05mm(3/4")
■
Bending pipes
CAUTION
• Topreventbreakingofthepipe,avoidsharpbends.Bendthepipewitharadiusof
curvatureof100mmormore.
• 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anymore.
•Donotbendorstretchthepipesmorethan3times.
AIR
Bottomside
580mm
330mm
Fixsecurelywithboltsonasolidblock.(Use4setsofcommerciallyavailableM10bolt,
nutandwasher.)
Bolt
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.
3.3. Removing and replacing part
■
Switch cover removal
(1) Removethetappingscrews.
(2) Slidetheswitchcoverdownwardsto
release.
■
Installing the switch
cover
(1) Afterinsertingthehooks(2places)on
theswitchcoverintotheholeonthe
outdoorunit,slidetheswitchcover
upwards.
(2) Replacethetappingscrews.
Screws
Screws
Switchcover
Hole
Hook
3.4. Drain installation
CAUTION
• PerformdrainworkinaccordancewiththisManual,andensurethatthedrainwater
isproperlydrained.Ifthedrainworkisnotcarriedoutcorrectly,watermaydripdown
fromtheunit,wettingthefurniture.
• Whentheoutdoortemperatureis0°Corless,donotusetheaccessorydrainpipe
anddraincap.Ifthedrainpipeanddraincapareused,thedrainwaterinthepipe
mayfreezeinextremelycoldweather.(Reversecyclemodelonly)
• Outdoorunittobefastenwithboltsatthefourplacesindicatedbythearrowswithout
fail.
9319205281-02_IM.indb 8 18-Jun-19 3:07:25 PM
En-9
■
Flare connection
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.
Topreventgasleakage,coattheare
surfacewithalkylbenzeneoil(HAB).
Donotusemineraloil.
(3) Attachtheconnection
pipe.
Flarenut
Connectionpipe
(Liquid)
UNITB
UNITA
Connectionpipe(Gas)
Flarenut
3-wayvalve(Gas)
2-wayvalve(Liquid)
(4) Whenthearenutis
tightenedproperlybyyour
hand,useatorquewrench
tonallytightenit.
Holdingspanner
Torquewrench
Bodyside
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.
•Outerpanelmaybedistortediffastenedonlywithawrench.Besuretoxtheelemen-
tarypartwithaholdingwrench(spanner)andfastenwithatorquewrench(refertobelow
diagram).Donotapplyforcetotheblankcapofthevalveorhangawrench,etc.,onthe
cap.Ifblankcapisbroken,itmaycauseleakageofrefrig
erant.
Flare nut [mm (in.)] Tightening torque [N·m (kgf·cm)]
6.35(1/4)dia. 16to18(160to180)
9.52(3/8)dia. 32to42(320to420)
12.70(1/2)dia. 49to61(490to610)
15.88(5/8)dia. 63to75(630to750)
19.05(3/4)dia. 90to110(900to1100)
CAUTION
• Fastenaarenutwithatorquewrenchasinstructedinthismanual.Iffastenedtoo
tight,thearenutmaybebrokenafteralongperiodoftimeandcausealeakageof
refrigerant.
• Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybeforeyou
runthecompressor.Donotoperatethecompressorundertheconditionofrefrigerant
pipingnotattachedproperlywith3-wayvalvesopen.Thismaycauseabnormalpres-
sureintherefrigerationcyclethatleadstobreakageandeveninjury.
3.6. Sealing test
WARNING
• Beforeoperatingthecompressor,installthepipesandsecurelyconnectthem.
Otherwise,ifthepipesarenotinstalledandifthevalvesareopenwhenthe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.
• Makesurethatthe3-wayvalvesareclosedbeforeperformingasealingtest.
• Pressurizenitrogengasto4.15MPatoperformthesealingtest.
• Addnitrogengastoboththeliquidpipesandthegaspipes.
• Checkallareconnectionsandwelds.Then,checkthatthepressurehasnotdecreased.
• Comparethepressuresafterpressurizingandlettingitstandfor24hours,andcheck
thatthepressurehasnotdecreased.
*Whentheoutdoorairtemperaturechanges5°C,thetestpressurechanges
0.05MPa.Ifthepressurehasdropped,thepipejointsmaybeleaking.
• Ifaleakisfound,immediatelyrepairitandperformthesealingtestagain.
• Aftercompletingthesealingtest,releasethenitrogengasfrombothvalves.
• Releasethenitrogengasslowly.
3.7. Vacuum process
CAUTION
• Alwaysuseavacuumpumptopurgetheair.
• Refrigerantforpurgingtheairisnotchargedintheoutdoorunitatthefactory.
• Refrigerantmustnotbedischargedintoatmosphere.
• Useavacuumpump,gaugemanifoldandchargehoseforR32exclusively.Usingthe
samevacuumfordifferentrefrigerantsmaydamagethevacuumpumportheunit.
• Afterconnectingthepiping,checkthejointsforgasleakagewithgasleakdetectoror
soapywater.
■
Checking gas leakage and purging air
Gasleakchecksareperformedusingeithervacuumornitrogengas,soselecttheproper
onedependingonthesituation.
Checkinggasleakswithvacuum:
(1) Checkifthepipingconnectionsaresecure.
(2) Removethecapof3-wayvalve,andconnectthegaugemanifoldchargehosestothe
chargingportofthe3-wayvalve.
(3) Openthevalveofthegaugemanifoldfully.
(4) Operatethevacuumpumpandstartpumpdown.
(5) Checkthatthecompoundpressuregaugereads-0.1MPa(76cmHg),operatethe
vacuumpumpfor30minutesormoreineachvalve.
(6) Attheendofpumpdown,closethevalveofthegaugemanifoldfullyandstopthe
vacuumpump.
(Itchecksthatleaveasitisforabout10minutes,andaneedledoesnotreturn.)
(7) Disconnectthechargehosefromthe3-wayvalvechargingport.
(8) Removetheblankcaps,andfullyopenthespindlesofthe2-wayand3-wayvalves
withahexagonwrench.
[torque:6to7N·m(60to70kgf·cm)].
(9) Tightentheblankcapsandchargingportcapofthe2-wayvalveand3-wayvalveto
thespeciedtorque.
Checkinggasleakswithnitrogengas:
(1) Checkifthepipingconnectionsaresecure.
(2) Removethecapof3-wayvalve,andconnectthegaugemanifoldchargehosestothe
chargingportofthe3-wayvalve.
(3) Pressurizewithnitrogengasusingthe3-wayvalvechargingport.
(4) Donotpressurizeuptothespeciedpressureallatoncebutdosogradually.
1
Increasethepressureupto0.5Mpa(5kgf/cm2),letitsitforaboutveminutes
 andthencheckforanydecreaseinpressure.
2
Increasethepressureupto1.5Mpa(15kgf/cm2),letitsitforaboutveminutes
 andthencheckforanydecreaseinpressure.
3
Increasethepressureuptothespeciedpressure(thepressuredesignedforthe
 product)andthenmakeanoteofit.
(5) Letitsitatthespeciedpressureandifthereisnodecreaseinpressurethenitis
satisfactory.Ifapressuredecreaseisconrmed,thereisaleak,soitisnecessaryto
specifytheleaklocationandmakeminoradjustments.
9319205281-02_IM.indb 9 18-Jun-19 3:07:25 PM
En-10
(6) Dischargethenitrogengasandstartingremovingthegaswithavacuumpump.
(7) Openthevalveofthegaugemanifoldfully.
(8) Operatethevacuumpumpandstartpumpdown.
(9) Checkthatthecompoundpressuregaugereads-0.1MPa(76cmHg),operatethe
vacuumpumpfor30minutesormoreineachvalve.
(10) Attheendofpumpdown,closethevalveofthegaugemanifoldfullyandstopthe
vacuumpump.
(11) Disconnectthechargehosefromthe3-wayvalvechargingport.
(12) Removetheblankcaps,andfullyopenthespindlesofthe2-wayand3-wayvalves
withahexagonwrench.
[torque:6to7N·m(60to70kgf·cm)].
(13) Tightentheblankcapsandchargingportcapofthe2-wayvalveand3-wayvalve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(3/4in.) 35to40N·m(350to400kgf·cm)
Charging port cap
10to12N·m(100to120kgf·cm)
ChargingportCap
Outdoorunit
Connectingpipe
Blankcap
Servicehosewithvalvecore
Chargingport
3-wayvalve
Hexagonwrench
Usea4mm
hexagonwrench
Gaugemanifold
LO HI
Vacuumpump
Chargehose
CAUTION
• Donotpurgetheairwithrefrigerants,butuseavacuumpumptovacuumthe
installation!Thereisnoextrarefrigerantintheoutdoorunitforairpurging!
• UseavacuumpumpandgaugemanifoldandcharginghoseforR32exclusively.
Usingthesamevacuumfordifferentrefrigerantsmaydamagethevacuumpumpor
theunit.
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.
• 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.
• Beforeservicingtheunit,turnthepowersupplyswitchOFF.Then,donottouch
electricpartsfor5minutesduetotheriskofelectricshock.
• Makesuretoperformgroundingwork.Impropergroundingworkcancauseelectric
shocks.
9319205281-02_IM.indb 10 18-Jun-19 3:07:26 PM
En-11
CAUTION
• Theprimarypowersupplycapacityisfortheairconditioneritself,anddoesnot
includetheconcurrentuseofotherdevices.
• Iftheelectricalpowerisinadequate,contactyourelectricpowercompany.
• Installabreakerinalocationthatisnotexposedtohightemperatures.
Ifthetemperaturesurroundingthebreakeristoohigh,theamperageatwhichthe
breakercutsoutmaydecrease.
• Whenusinganearthleakagebreakerthathasbeendesignedsolelyforgroundfault
protection,besuretoinstallafuse-equippedswitchorcircuitbreaker.
• Thissystemusesaninverter,whichmeansthatitmustbeusedanearthleakage
breakerthatcanhandleharmonicsinordertopreventmalfunctioningoftheearth
leakagebreakeritself.
• Donotusecrossoverpowersupplywiringfortheoutdoorunit.
• Ifthetemperaturesurroundingthebreakeristoohigh,theamperageatwhichthe
breakercutsoutmaydecrease.
• Whentheelectricalswitchboardisinstalledoutdoors,placeitunderlockandkeyso
thatitisnoteasilyaccessible.
• Startwiringworkafterclosingbranchswitchandovercurrentbreaker.
• Transmissioncablebetweenindoorunitandoutdoorunitis230V.
• Besurenottoremovethermistorsensoretc.frompowerwiringandconnectionwir-
ing.Compressormayfailifoperatedwhileremoved.
• 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.
• Donotfastenthepowersupplycableandconnectioncabletogether.
■
How to connect wiring to the terminal
•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.
Earth(Ground)wire
Powercableor
Connectioncable
60mm
75mm
How to connect wiring to the terminal
Caution when wiring cable
(1) Use crimp-type terminals with insulating sleeves as shown in the gure to con-
nect to the terminal block.
(2) Securely clamp the crimp-type terminals to the wires using an appropriate tool
so that the wires do not come loose.
(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.
(6) See the table below for the terminal screw tightening torques.
Strip:10mm
Wire
Terminalblocks
Crimp-type
terminal
Sleeve
Wire
Crimp-type
terminal
Screwwith
specialwasher
Screwwithspecialwasher
Crimp-typeterminal
Tightening torque [N·m (kgf·cm)]
M4screw 1.2to1.8(12to18)
■
Connection diagrams
A
B
L
N
1
2
3
B
1
2
3
A
1
2
3
1
2
3
Powercable
Earth(Ground)
POWER
230V
50Hz·1ø
Connectioncable
Connectioncable
■
Outdoor unit
(1) Switchcoverremoval
•Removethexing
screws.
•Lifttheswitchcover
upward,andthenpullit
outwardtoremoveit.
Hook
Switch
cover
Screw
(2) Connectthepower
supplycableandthe
connectioncableto
terminal.
Fastenthepower
supplycableand
connectioncablewith
cableclamp.
POWER
UNITA UNITB
Cable
clamp
Cableclamp
Connectioncable
Powercable
(3) Asillustrated,drawout
thepowercableand
theconnectioncable.
Powercable
Connectioncable
(4) Installtheswitchcover.
Switchcover
9319205281-02_IM.indb 11 18-Jun-19 3:07:27 PM
En-12
4. TEST RUN
Thetestrunmethodmaybedifferentforeachindoorunitthatisconnected.Refertothe
installationManualincludedwitheachindoorunit.
CAUTION
• Alwaysturnonthepower12hourspriortothestartoftheoperationinorderto
ensurecompressorprotection.
4.1. Make a TEST RUN in accordance with the
installation Manual for the indoor unit
4. 1. 1. CHECK ITEMS
● INDOOR UNIT
(1) Isoperationofeachbuttonontheremotecontrollernormal?
(2) Doeseachlamplightnormally?
(3) Dotheairow-directionlouveroperatenormally?
(4) Isthedrainnormal?
(5) Isthereanyabnormalnoiseandvibrationduringoperation?
● OUTDOOR UNIT
(1) Isthereanyabnormalnoiseandvibrationduringoperation?
(2) Willnoise,wind,ordrainwaterfromtheunitdisturbtheneighbors?
(3) Isthereanygasleakage?
•Donotoperatetheairconditionerinthetestrunningstateforalongtime.
•Fortheoperationmethod,refertotheoperatingmanualandperformoperationcheck.
5. FINISHING
5.1. Installing insulation
• DeterminethethicknessoftheinsulationmaterialbyreferringtoTableA.
Table A, Selection of insulation
(for using an insulation material with equal heat transmission rate or below
0.040 W/(m·k))
Relative humidity
[mm (in.)]
Insulation material
Minimum thickness [mm]
70%
or more
75%
or more
80%
or more
85%
or more
Pipediameter
6.35(1/4) 8 10 13 17
9.52(3/8) 9 11 14 18
12.70(1/2) 10 12 15 19
15.88(5/8) 10 12 16 20
19.05(3/4) 10 13 16 21
• Iftheambienttemperatureandrelativehumidityexceed32°C,increasethelevelof
heatinsulationfortherefrigerantpipes.
6. PUMP DOWN
PUMPDOWNOPERATION
Toavoiddischargingrefrigerantintotheatmosphereatthetimeofrelocationordisposal,
recoverrefrigerantbydoingthecoolingoperationorforcedcoolingoperationaccordingto
thefollowingprocedure.(Whenthecoolingoperationcannotstartinwinter,andsoon,start
theforcedcoolingoperation.)
(1) Dotheairpurgingofthechargehosebyconnectingthecharginghoseofgauge
manifoldtothechargingportof3wayvalve(UNITAandUNITB)andopeningthelow
pressurevalveslightly.
(2) Closethevalvestemof2wayvalve(UNITAandUNITB)completely.
(3) Startthecoolingoperationorfollowingforcedcoolingoperation.(UNITAandUNITB)
WhenusingtheremotecontrollerPresstheTESTRUNbuttonafterstartingthecooling
operationbytheremotecontroller.Theoperationindicatorlampandtimerindicator
lampwillbegintoashsimultaneouslyduringtestrun.WhenusingtheMANUALAUTO
buttonoftheindoorunit(Theremotecontrollerislost,andsoon.)Keeponpressing
theMANUALAUTObuttonoftheindoorunitformorethan10seconds.(Theforced
coolingoperationcannotstartiftheMANUALAUTObuttonisnotkeptonpressingfor
morethan10seconds.)
(4) Closethevalvestemof3wayvalve(UNITAandUNITB)whenthereadingonthe
compoundpressuregaugebecomes0.05~0Mpa(0.5~0kg/cm
2
).
(5) Stoptheoperation.(UNITAandUNITB)PresstheSTART/STOPbuttonoftheremote
controllertostoptheoperation.PresstheMANUALAUTObuttonwhenstoppingthe
operationfromindoorunitside.(Itisnotnecessarytopressonkeepingformorethan
10seconds.)
CAUTION
• Duringthepump-downoperation,makesurethatcompressorisoffbeforeyou
removetherefrigerantpiping.Donotremovetheconnectionpipewhilethe
compressorisinoperationwith2or3wayvalveopen.Thismaycauseabnormal
pressureintherefrigerationcyclethatbreakageandinjury.
9319205281-02_IM.indb 12 18-Jun-19 3:07:27 PM
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Fujitsu ROG18KBTA2 Installation guide

ROG18KBTA2
Fujitsu
Brand
Fujitsu
Model
ROG18KBTA2
Category
Split-system air conditioners
Type
Installation guide
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