Fujitsu AOU18RGLX Installation guide

Fujitsu
Brand
Fujitsu
Model
AOU18RGLX
Type
Installation guide

This manual is also suitable for

AIR CONDITIONER
PART No. 9374995592-02
English
OUTDOOR UNIT
FrançaisEspañol
APPAREIL EXTÉRIEUR
UNIDAD EXTERIOR
INSTALLATION MANUAL
For authorized service personnel only.
MANUEL D’INSTALLATION
MANUAL DE INSTALACIÓN
Pour le personnel d’entretien autorisé uniquement.
Únicamente para personal de servicio autorizado.
9374995592-02_IM.indb 1 11/28/2018 11:05:13
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1.2. Special precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Donotsupplypowertotheunituntilallwiringandtubingarecompletedorreconnected
and checked.
• Highly dangerous electrical voltagesare used in this system. Carefully refer to
thewiring diagramand these instructions whenwiring. Improper connections and
inadequateearthing(grounding)cancauseaccidentalinjuryordeath.
• Earth(Ground)theunitfollowinglocalelectricalcodes.
• Connectallwiringtightly.Loosewiringmaycauseoverheatingatconnectionpointsand
apossiblerehazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get apartner to
help,andbendyourkneeswhenliftingtoreducestrainonyourback.Sharpedgesorthin
aluminumnsontheairconditionercancutyourngers.
When Installing...
...In a Ceiling or Wall
Makesuretheceiling/wallisstrongenoughtoholdtheunit’sweight.Itmaybenecessary
toconstructastrongwoodormetalframetoprovideaddedsupport
.
...In a Room
Properly insulate any tubingrun inside aroom to prevent “sweating” thatcan cause
drippingandwaterdamagetowallsandoors.
...In Moist or Uneven Locations
Usearaisedconcretepadorconcreteblockstoprovideasolid,levelfoundationforthe
outdoorunit.Thispreventswaterdamageandabnormalvibration.
...In an Area with High Winds
Securelyanchortheoutdoorunitdownwithboltsandametalframe.
Provideasuitableairbafe.
...In a Snowy Area (for Heat Pump-type Systems)
Installtheoutdoorunitonaraisedplatformthatishigherthandriftingsnow.
When Connecting Refrigerant Tubing
• Keepalltubingrunsasshortaspossible.
• Usethearemethodforconnectingtubing.
• Applyrefrigerantlubricanttothematchingsurfacesoftheareanduniontubesbefore
connectingthem,thentightenthenutwithatorquewrenchforaleak-freeconnection.
• Checkcarefullyforleaksbeforeopeningtherefrigerantvalves.
NOTES:
Depending onthe system type, liquid and gas lines maybe either narrowor wide.
Therefore,toavoidconfusiontherefrigeranttubingforyourparticularmodelisspecied
aseither“small”or“large”ratherthanas“liquid”or“gas”.
When Servicing
• TurnthepowerOFFatthemaincircuitbreakerpanelbeforeopeningtheunittocheck
orrepairelectricalpartsandwiring.
• Keepyourngersandclothingawayfromanymovingparts.
• Cleanupthesiteafteryounish,rememberingtocheckthatnometalscrapsorbitsof
wiringhavebeenleftinsidetheunitbeingserviced.
• Afterinstallation,explaincorrectoperationtothecustomer,usingtheoperatingmanual.
WARNING
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.
• 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
• Installationofthisproductmustbedonebyexperiencedservicetechniciansor
professionalinstallersonlyinaccordancewiththismanual.Installationbynon-
professionalorimproperinstallationoftheproductmaycauseseriousaccidents
suchasinjury,waterleakage,electricshock,orre.Iftheoutdoorunitisinstalledin
disregardoftheinstructionsintheinstallationmanual,itwillvoidthemanufacturer’s
warranty.
• Donotturnonthepoweruntilallworkhasbeencompleted.Turningonthepower
beforetheworkiscompletedcancauseseriousaccidentssuchaselectricshockor
re.
• Ifrefrigerantleakswhenyouareworking,ventilatethearea.Iftheleakingrefrigerant
isexposedtoadirectame,itmayproduceatoxicgas.
• Installationworkmustbeperformedinaccordancewithregulations,codes,or
standardsforelectricalwiringandequipmentineachcountry,region,ortheinstalling
place.
• Donotusethisequipmentwithairoranyotherunspeciedrefrigerantinthe
refrigerantlines.Excesspressurecancausearupture.
• Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybeforeyou
runthecompressor.Donotoperatethecompressorundertheconditionofrefrigerant
pipingnotattachedproperlywith3-wayvalveopen.Thismaycauseabnormal
pressureintherefrigerationcyclethatleadstoruptureandeveninjury.
• Wheninstallingandrelocatingtheairconditioner,donotmixgasesotherthanthe
speciedrefrigerant(R410A)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.
• Fortheairconditionertoworkappropriately,installitaswritteninthismanual.
Contents
1. SAFETYPRECAUTIONS ............................................................................................2
1.1. IMPORTANT!Pleasereadbeforestarting .........................................................2
1.2. Specialprecautions ............................................................................................2
2. ABOUT THIS PRODUCT.............................................................................................3
2.1. PrecautionsforusingR410Arefrigerant ............................................................3
2.2. SpecialtoolsforR410Arefrigerant ....................................................................3
2.3. Accessories ........................................................................................................3
2.4. Operatingrange .................................................................................................3
3. GENERALSPECIFICATION .......................................................................................4
3.1. Selectingcircuitbreakerandwiring ...................................................................4
3.2. Selectingthepipematerial .................................................................................4
3.3. Connection pipe requirement .............................................................................4
3.4. Additionalcharging .............................................................................................4
4. INSTALLATION WORK ............................................................................................... 4
4.1. Selectinganinstallationlocation ........................................................................4
4.2. Installation dimensions .......................................................................................4
4.3. Transportingtheunit ..........................................................................................5
4.4. Drain installation .................................................................................................6
4.5. Secure the unit ...................................................................................................6
5. PIPE INSTALLATION .................................................................................................. 6
5.1. Brazing ...............................................................................................................6
5.2. Flareconnection(pipeconnection) ....................................................................6
5.3. Sealingtest ........................................................................................................7
5.4. Vacuum process ................................................................................................7
5.5. Additionalcharge ...............................................................................................8
5.6. Gasleakageinspection ......................................................................................8
6. ELECTRICALWIRING ................................................................................................8
6.1. Notesforelectricalwiring ...................................................................................8
7. TEST RUN ...................................................................................................................9
8. PUMP DOWN ............................................................................................................10
1. SAFETY PRECAUTIONS
1.1. IMPORTANT! Please read before starting
Thisairconditioningsystemmeetsstrictsafetyandoperatingstandards.
Astheinstallerorserviceperson,itisanimportantpartofyourjobtoinstallorservicethe
systemsoitoperatessafelyandefciently.
For safe installation and trouble-free operation, you must:
• Carefullyreadthisinstructionbookletbeforebeginning.
• Followeachinstallationorrepairstepexactlyasshown.
• Observealllocal,state,andnationalelectricalcodes.
• Paycloseattentiontoallwarningandcautionnoticesgiveninthismanual.
WARNING:
Thissymbolreferstoahazardorunsafepracticewhichcanresultin
severepersonalinjuryordeath.
CAUTION:
Thissymbolreferstoahazardorunsafepracticewhichcanresultin
personalinjuryandthepotentialforproductorpropertydamage.
•Hazardalertingsymbols
: Electrical :Safety/alert
If Necessary, Get Help
Theseinstructionsareallyouneedformostinstallationsitesandmaintenanceconditions.
Ifyourequirehelpforaspecialproblem,contactoursales/serviceoutletoryourcertied
dealerforadditionalinstructions.
In Case of Improper Installation
Themanufacturershallinnowayberesponsibleforimproperinstallationormaintenance
service,includingfailuretofollowtheinstructionsinthisdocument.
INSTALLATION MANUAL
PART No. 9374995592-02
OUTDOOR UNIT
NOTES:Thismanualdescribeshowtoinstalltheairconditionerdescribedabove.
Handlingandinstallationshallonlybedonebyprofessionalsasoutlinedinthis
manual.
• Installation mustbe performed in accordance withthe requirement of NEC (National
ElectricalCode)andCEC(CanadianElectricalCode)byauthorizedpersonnelonly.
• Allproductsaremanufacturedtometricunitsandtolerances.UnitedStatescustomary
unitsareprovidedforreferenceonly.Incaseswhereexactdimensionsandtolerances
arerequired,alwaysrefertometricunits.
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- ModelsthatuserefrigerantR410Ahaveadifferentchargingportthreaddiameter
topreventerroneouschargingwithconventionalrefrigerant(R22)andforsafety.
Therefore,checkbeforehand.[ThechargingportthreaddiameterforR410Ais
1/2-20UNF.]
- Becarefulthatforeignmatter(oil,water,etc.)doesnotenterthepipingthanwith
refrigerantmodels.Also,whenstoringthepiping,securelysealtheopeningsby
pinching,taping,etc.
- Whenchargingtherefrigerant,takeintoaccounttheslightchangeinthe
compositionofthegasandliquidphases.Andalwayschargefromtheliquidphase
whererefrigerantcompositionisstable.
2.2. Special tools for R410A refrigerant
WARNING
ToinstallaunitthatusesR410Arefrigerant,usededicatedtoolsandpipingmaterials
thathavebeenmanufacturedspecificallyforR410Ause.Becausethepressureof
R410A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fire.
Tool name Changes
Gaugemanifold Pressureishighandcannotbemeasuredwithaconventional
gauge.Topreventerroneousmixingofotherrefrigerants,the
diameterofeachporthasbeenchanged.
Itisrecommendedthegaugewithseals–0.1to5.3MPa(-1to
53bar)forhighpressure.–0.1to3.8MPa(-1to38bar)forlow
pressure.
Charginghose Toincreasepressureresistance,thehosematerialandbase
sizewerechanged.
Vacuum pump Aconventionalvacuumpumpcanbeusedbyinstallinga
vacuum pump adapter.
Gasleakagedetector SpecialgasleakagedetectorforHFCrefrigerantR410A.
2.3. Accessories
WARNING
Forinstallationpurposes,besuretousethepartssuppliedbythemanufacturerorother
prescribedparts.Theuseofnon-prescribedpartscancauseseriousaccidentssuchas
theunitfalling,waterleakage,electricshock,orre.
Followinginstallationpartsaresupplied.Usethemasrequired.
Keepthismanualinasafeplace,anddonotdiscardanyotheraccessoriesuntilthe
installationworkhasbeencompleted.
Name and shape Q’ty Description
Installation
manual
1
This manual
Drain pipe
1
(Reversecyclemodelonly)
Drain cap
5
—
Thefollowingitemsarenecessarytoinstallthisairconditioner.(Theitemsarenot
includedwiththeairconditionerandmustbepurchasedseparately.)
Name
Connectionpipeassembly Decorative tape Saddle Tappingscrews
Connectioncable Vinyl tape Drain hose Sealant
Wall pipe Wall cap M10bold,nut
2.4. Operating range
Outdoor Cooling/Dry Mode Heating Mode
Temperature
-5to115°F
(-20to46°C)
-5to75°F
(-20to24°C)
• Ifoperatedatatemperaturebeyondthespeciedoperatingrange,aprotectioncircuit
maybeactivatedtostoptheoperationoftheunit.
• 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.
• Ifthesupplycordisdamaged,itmustbereplacedbythemanufacturer,itsservice
agentorsimilarlyqualiedpersonsinordertoavoidahazard.
• Donotuseanextensioncable.
• Donotmodifypowercable,useextensioncableorbranchwiring.Improperusemay
causeelectricshockorrebypoorconnection,insufcientinsulationorovercurrent.
• Donotpurgetheairwithrefrigerantsbutuseavacuumpumptovacuumthe
installation.
• Thereisnoextrarefrigerantintheoutdoorunitforairpurging.
• 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.)
• Usingthesamevacuumpumpfordifferentrefrigerantsmaydamagethevacuum
pump or the unit.
• Useacleangaugemanifold,vacuumpumpandcharginghoseforR410Aexclusively.
• Donotmodifythisunit,suchasopeningaholeinthecabinet.
• Duringthepump-downoperation,makesurethatthecompressoristurnedoffbefore
youremovetherefrigerantpiping.
Donotremovetheconnectionpipewhilethecompressorisinoperationwith2-wayor
3-wayvalvesopen.Thismaycauseabnormalpressureintherefrigerationcyclethat
leadstoruptureandeveninjury.
• Disposeofthepackingmaterialssafely.Tearanddisposeoftheplasticpackingbags
sothatchildrencannotplaywiththem.Thereisthedangerofsuffocationifchildren
playwiththeoriginalplasticbags.
• 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.
• Toavoiddangerofsuffocation,keeptheplasticbagorthinlmusedasthepackaging
materialawayfromyoungchildren.
• CancerandReproductiveHarm-www.P65Warnings.ca.gov.
CAUTION
• Thisunitmustbeinstalledbyqualiedpersonnelwithacapacitycerticationof
handlingrefrigerantuids.Refertoregulationandlawsinuseoninstallationplace.
• Installtheunitbyfollowinglocalcodesandregulationsinforceintheplaceof
installation,andtheinstallationinstructionsofthemanufacturer.
• Thisunitispartofasetconstitutinganairconditioner.Theunitmustnotbeinstalled
aloneorbeinstalledwithdevicenotauthorizedbythemanufacturer.
• Wheninstallingpipesshorterthan5m,soundoftheoutdoorunitwillbetransferredto
theindoorunit,whichwillcauselargeoperatingsoundorsomeabnormalsound.
• Alwaysuseaseparatepowersupplylineprotectedbyacircuitbreakeroperatingon
allwireswithadistancebetweencontactof3mmforthisunit.
• Toprotectthepersons,earth(ground)theunitcorrectly,andusethepowercable
combinedwithanEarthLeakageCircuitBreaker(ELCB).
• Theunitsarenotexplosionproof,andthereforeshouldnotbeinstalledinexplosive
atmosphere.
• Thisunitcontainsnouser-serviceableparts.Alwaysconsultexperiencedservice
technicianforrepairing.
• Whenmovingorrelocatingtheairconditioner,consultexperiencedservice
techniciansfordisconnectionandinstallationoftheunit.
• Childrenshouldbemonitoredtoensuretheydonotplaywiththedevice.
• Donottouchthealuminumnsofheatexchangerbuilt-intheindoororoutdoorunitto
avoidpersonalinjurywhenyouinstallormaintaintheunit.
• Donotplaceanyotherelectricalproductsorhouseholdbelongingsunderindoorunit
oroutdoorunit.Drippingcondensationfromtheunitmightgetthemwet,andmay
causedamageormalfunctionofyourproperty.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
WARNING
• Donotintroduceanysubstanceotherthantheprescribedrefrigerantintothe
refrigerationcycle.Ifairenterstherefrigerationcycle,thepressureintherefrigeration
cyclewillbecomeabnormallyhighandcausethepipingtorupture.
• Ifthereisarefrigerantleak,makesurethatitdoesnotexceedtheconcentrationlimit.
Ifarefrigerantleakexceedstheconcentrationlimit,itcanleadtoaccidentssuchas
oxygenstarvation.
• Donottouchrefrigerantthathasleakedfromtherefrigerantpipeconnectionsorother
areas.Touchingtherefrigerantdirectlycancausefrostbite.
• Ifarefrigerantleakoccursduringoperation,immediatelyvacatethepremisesand
thoroughlyventilatethearea.Iftherefrigerantcomesincontactwithaame,it
producesatoxicgas.
• Thebasicinstallationworkproceduresarethesameasconventionalrefrigerant
models.
However,paycarefulattentiontothefollowingpoints:
- Sincetheworkingpressureis1.6timeshigherthanthatofconventionalrefrigerant
(R22)models,someofthepipingandinstallationandservicetoolsarespecial.(See
thetablebelow.)
Especially,whenreplacingaconventionalrefrigerant(R22)modelwithanew
refrigerantR410Amodel,alwaysreplacetheconventionalpipingandarenutswith
theR410Apipingandarenuts.
9374995592-02_IM.indb 3 11/28/2018 11:05:15
En-4
3. GENERAL SPECIFICATION
3.1. Selecting circuit breaker and wiring
CAUTION
• Besuretoinstallabreakerofthespeciedcapacity.
• Regulationofcablesandbreakerdiffersfromeachlocality,referinaccordancewith
local rules.
Voltage rating 1ø208/230V(60Hz)
Operating range 188-253V
Cable Cable size (AWG) Cable type Remark
Powersupply
cable
AWG16to14
Sheathed PVC
cable
2wire+Earth(Ground)
Connection
cable
AWG20to16
Sheathed PVC
cable
3wire+Earth(Ground)
Selectthecorrectcabletypeandsizeaccordingtothecountryorregion’sregulations.
CableLength:Limitvoltagedroptolessthan2%.Increasecablegaugeifvoltagedropis
2%ormore.
CAUTION
MODEL 18 24 30 36
MINIMUM CIRCUIT AMPACITY 18.3A 20.8 A 20.8 A 24.6 A
MAX.CKT.BKR.(MAXIMUMCIRCUITBREAKER) 20 A 30 A 30 A 30 A
• 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thenationalstandard.
• Installthedisconnectdevicewithacontactgapofatleast2/16in(3mm)inallpoles
nearbytheunits.(Bothindoorunitandoutdoorunit)
• Installthecircuitbreakernearbytheunits.
3.2. Selecting the pipe material
CAUTION
• Donotuseexistingpipes.
• Usepipesthathavecleanexternalandinternalsideswithoutanycontamination
whichmaycausetroubleduringuse,suchassulfur,oxide,dust,cuttingwaste,oil,or
water.
• It is necessary to use seamless copper pipes.
Material:Phosphordeoxidizedseamlesscopperpipes.
Itisdesirablethattheamountofresidualoilislessthan40mg/33ft(10m).
• 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R410A
incurspressurehigherthanwhenusingconventionalrefrigerant,itisnecessaryto
choose adequate materials.
NOTES:
Thicknessesofcopperpipesusedwith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 (R410A)
Pipe outside diameter [in (mm)] Thickness [in (mm)]
1/4(6.35) 0.032(0.80)
3/8(9.52) 0.032(0.80)
1/2(12.70) 0.032(0.80)
5/8(15.88) 0.039(1.00)
3/4(19.05) 0.047(1.20)
3.3. Connection pipe requirement
CAUTION
Ifthepipelengthsandheightdifferencesarenotkeptasshowninthetable,correct
operationcannotbeguaranteed.
Model
Diameter Pipe length
Maximum height
(between indoor
and outdoor)
Liquid Gas MAX. MIN.
18
1/4in(6.35mm)
1/2in(12.70mm)
165ft(50m) 17ft(5m) 98ft(30m)
24
3/8in(9.52mm)
5/8in(15.88mm)
165ft(50m) 17ft(5m) 98ft(30m)
30
3/8in(9.52mm)
5/8in(15.88mm)
165ft(50m) 17ft(5m) 98ft(30m)
36
3/8in(9.52mm)
5/8in(15.88mm)
165ft(50m) 17ft(5m) 98ft(30m)
3.4. Additional charging
Refrigerantsuitableforapipinglengthof66ft(20m)ischargedintheoutdoorunitatthe
factory.
Whenthepipingislongerthan66ft(20m),additionalchargingisnecessary.
Fortheadditionalamount,seethetablebelow.
Model Piping length
66 ft
(20 m)
98 ft
(30 m)
131 ft
(40 m)
165 ft
(50 m)
Rate
18
Additional charge
None
7 oz
(200g)
14oz
(400g)
1lb5oz
(600g)
0.22oz/ft
(20g)
24/30/36 None
14oz
(400g)
1lb12oz
(800g)
2lb10oz
(1200g)
0.43oz/ft
(40g)
CAUTION
Whenaddingrefrigerant,addtherefrigerantfromthechargingportatthecompletion
ofwork.
4. INSTALLATION WORK
Makesuretoobtainthecustomer’sapprovalforselectingandinstallingtheoutdoorunit.
4.1. Selecting an installation location
WARNING
• Installataplacethatcanwithstandtheweightoftheoutdoorunitsandinstall
positivelysothattheunitswillnottoppleorfall.
• Besuretoinstalltheoutdoorunitasprescribed,sothatitcanwithstandearthquakes
andtyphoonsorotherstrongwinds.Improperinstallationcancausetheunittotopple
orfall,orotheraccidents.
• Donotinstalltheoutdoorunitneartheedgeofabalcony.Otherwise,childrenmay
climbontotheoutdoorunitandfalloffofthebalcony.
CAUTION
• Donotinstalltheoutdoorunitinthefollowingareas:
- Areawithhighsaltcontent,suchasattheseaside.Itwilldeterioratemetalparts,
causingthepartstofailortheunittoleakwater.
- Arealledwithmineraloilorcontainingalargeamountofsplashedoilorsteam,
suchasakitchen.Itwilldeteriorateplasticparts,causingthepartstofailortheunit
toleakwater.
- Areathatgeneratessubstancesthatadverselyaffecttheequipment,suchas
sulfuricgas,chlorinegas,acid,oralkali.Itwillcausethecopperpipesandbrazed
jointstocorrode,whichcancauserefrigerantleakage.
- Areacontainingequipmentthatgenerateselectromagneticinterference.Itwillcause
thecontrolsystemtomalfunction,preventingtheunitfromoperatingnormally.
- Areathatcancausecombustiblegastoleak,containssuspendedcarbonbersor
ammabledust,orvolatileinammablessuchaspaintthinnerorgasoline.Ifgas
leaksandsettlesaroundtheunit,itcancauseare.
- Areawheresmallanimalsmaylive.Itmaycausefailure,smokeorreifsmall
animals enter and touch internal electrical parts.
- Areawhereanimalsmayurinateontheunitorammoniamaybegenerated.
• Donottilttheoutdoorunitmorethan3degrees.
• Installtheoutdoorunitinawell-ventilatedlocationawayfromrainordirectsunlight.
• Iftheoutdoorunitmustbeinstalledinanareawithineasyreachofthegeneralpublic,
installasnecessaryaprotectivefenceortheliketopreventtheiraccess.
• Installtheoutdoorunitinalocationthatwouldnotinconvenienceyourneighbors,as
theycouldbeaffectedbytheairowcomingoutfromtheoutlet,noise,orvibration.If
itmustbeinstalledinproximitytoyourneighbors,besuretoobtaintheirapproval.
• Donotinstallinanareathathasheatsources,vapors,ortheriskofleakageor
accumulationofammablegas.
• 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.
• Donotinstalltheunitwhereastrongwindblowsorwhereitisverydusty.
• Installtheunitwherekeepawaymorethan3mfromtheantennaofTVsetand
Radio.
• 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.
• Outdoorunitshouldbesettoaplacewherebothdrainageanditselfwillnotbe
affectedwhenheating.
• Formaintenancepurposes,donotburythepiping.
4.2. Installation dimensions
CAUTION
• Theinstallationspaceshowninthefollowingexamplesisbasedonanambient
temperatureundercoolingoperationof95°F(35°C)(DB)attheairintakeofthe
outdoorunit.Providemorespacearoundtheairintakethanshownintheexamplesif
theambienttemperatureexceeds95°F(35°C)(DB)orifthethermalloadofallofthe
outdoorunitsexceedsthecapacity.
• Consider the transportation route, installation space, maintenance space, and access,
andinstalltheunitinalocationwithsufcientspacefortherefrigerantpiping.
• Installationmethodsnotshowninthefollowingexamplesarenotrecommended.
Performancemaydropsignicantly.
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4.2.1. Single outdoor unit installation
When the upward area is open [Unit:in(mm)]
(1)Obstaclesatrearonly
4(100)
or more
(2)Obstaclesatrearandsidesonly
10(250)
or more
12(300)
or more
4(100)
or more
(3)Obstaclesatfrontonly
24(600)
or more
(4)Obstaclesatfrontandrearonly
24(600)
or more
4(100)
or more
When an obstruction is present also in the upward area [Unit:in(mm)]
(1)Obstaclesatrearandaboveonly
12(300)
or more
Max.
20(500)
24(600)
or more
(2)Obstaclesatrear,sides,andaboveonly
40(1000)
or more
4(100)
or more
10(250)
or more
20(500)
or more
Max.
20(500)
4.2.2. Multiple outdoor unit installation
• Provideatleast10in(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:in(mm)]
(1)Obstaclesatrearonly
12(300)
or more
10(250)ormore
(2)Obstaclesatfrontonly
60(1500)
or more
10
(250)
or
more
(3)Obstaclesatfrontandrearonly
20(500)ormore
60(1500)ormore
10
(250)
or
more
When an obstruction is present also in the upward area [Unit:in(mm)]
(1)Obstaclesattherearandabove
•Upto3unitscanbeinstalledsidebyside.
•When4unitsormorearearrangedinaline,providethespaceasshownbelow.
60(1500)
or more
20(500)
or more
10(250)
or more
10(250)
or more
Max.12(300)
60(1500)
or more
4.2.3. Outdoor units installation in multi row
[Unit:in(mm)]
(1)Singleparallelunitarrangement
6(150)ormore
24(600)ormore
40(1000)ormore
79(2000)ormore
(2)Multipleparallelunitarrangement
20(500)ormore
24(600)ormore
60(1500)ormore
10
(250)
or
more
119(3000)ormore
10
(250)
or
more
6(150)
60(1500)
or more
20(500)
or more
10(250)
or more
NOTES:
• Ifthespaceislargerthanstatedabove,theconditionwillbethesameaswhenthereis
noobstacle.
• Heightabovetheoorlevelshouldbe50mmormore.
• Wheninstallingtheoutdoorunit,besuretoopenthefrontandleftsidetoobtainbetter
operationefciency.
4.3. 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
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4.4. 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32°F(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)
• Pleasesetuptheoutdoorunitinahighplaceandpleasedonotarrangetheframeof
installedstandunderthedrainport,becausethewaterdroppedfromthedrainport
repeatsfreezingandaccumulating,andmayblockthedrainport.
• Intheareawithheavysnowfall,iftheintakeandoutletofoutdoorunitisblockedwith
snow,itislikelytocauseofthebreakdown.Pleaseconstructacanopyandapedestal
orplacetheunitonahighstand(localcongured).
Bottom side
AIR
Draincapmountingplace
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5/8in(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Draincap(accessories)sothereisnowater
leakage.(Reversecyclemodelonly)
Drainpipemountinghole
Drainpipe(accessory)
Base
4.5. Secure the unit
WARNING
• 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.
[Unit:in(mm)]
5-3/16
(132)
AIR
25-9/16
(650)
4-11/16
(119)
1-15/16
(50)
1-15/16
(50)
5/8(16)
14-9/16(370)
4-Φ12Hole
• Install4anchorboltsatthelocationsindicatedwitharrowsintheabovegure.
• Toreducevibration,donotinstalltheunitdirectlyontheground.Installitonasecure
base(suchasconcreteblocks).
•
Thefoundationshallsupportthelegsoftheunitandhaveawidthof2in(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13/16in(20mm).
(Refertothegurebelow.)
• Ifoverturningpreventionisrequired,purchasethenecessarycommerciallyavailable
items.
Fixsecurelywithboltsonasolidblock.
Bolt
13/16in
(20mm)
Nut
Base
50 mm or more
5. PIPE INSTALLATION
5.1. 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).
Pressureregulatingvalve
Cap
Brazingarea
Nitrogengas
 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.
5.2. Flare connection (pipe connection)
5.2.1. Flaring
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
L
Pipe
A
Die
Pipe outside diameter
[in (mm)]
Dimension A [in (mm)]
Dimension B [in (mm)]
Flare tool for R410A,
clutch type
1/4(6.35)
0 to 0.020
(0to0.5)
3/8(9.1)
3/8(9.52)
1/2(13.2)
1/2(12.70)
5/8(16.6)
5/8(15.88)
3/4(19.7)
3/4(19.05)
15/16(24.0)
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Whenusing conventional are toolsto are R410A pipes,the dimensionA should be
approximately0.020in(0.5mm)morethanindicatedinthetable(foraringwithR410A
flare tools)to achieve the specified flaring. Use a thickness gauge to measurethe
dimension A.
Width across
flats
W
i
d
th
ac
r
oss
f
l
a
t
s
Pipe outside
diameter [in (mm)]
Width across ats of
Flare nut [in (mm)]
1/4(6.35)
11/16(17)
3/8(9.52)
7/8(22)
1/2(12.70)
1(26)
5/8(15.88)
1-1/8(29)
3/4(19.05)
1-7/16(36)
5.2.2. Bending pipes
CAUTION
• Topreventbreakingofthepipe,avoidsharpbends.Bendthepipewitharadiusof
curvatureof3-15/16in(100mm)to5-14/16in(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anymore.
• Donotbendorstretchthepipesmorethanthreetimes.
5.2.3. Pipe 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) Servicecoverremoval
• Removethetwomountingscrews.
• Removetheservicecoverbypushingdownwards.
Hook
(3places)
Directionof
the service
panel removal
Service cover
(2) Valve cover removal.
• Removetheonemountingscrew.
• Removethevalvecoverbyslidingupward.
Valve cover
Hook(4places)
(3) Installtheoutdoorunitwallcap(suppliedwiththeoptionalinstallationsetor
procuredatthesite)tothewallpipe.
(4) Connecttheoutdoorunitandindoorunitpiping.
(5) Aftermatchingthecenterofthearesurfaceandtighteningthenuthandtight,
tightenthenuttothespeciedtighteningtorquewithatorquewrench.
2-wayor3-wayvalves
(liquid)
Flare nut
Connection pipe
(liquid)
Connection pipe
(gas)
Flare nut
3-wayvalve
(gas)
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.
Torquewrench
Flare nut
Connection pipe
(liquid)
Flare nut
Connection pipe
Holding
spanner
90°
Topreventgasleakage,coat the
aresurfacewithrefrigeratoroil.
Flare nut [in (mm)] Tightening torque [ft·lb (N·m)]
1/4(6.35)dia. 12to13(16to18)
3/8(9.52)dia. 24to31(32to42)
1/2(12.70)dia. 36to45(49to61)
5/8(15.88)dia. 46to55(63to75)
3/4(19.05)dia. 66to81(90to110)
5.3. Sealing test
WARNING
• Beforeoperatingthecompressor,installthepipesandsecurelyconnectthem.
Otherwise,ifthepipesarenotinstalledandifthevalvesareopenwhenthe
compressoroperates,aircouldentertherefrigerationcycle.Ifthishappens,the
pressureintherefrigerationcyclewillbecomeabnormallyhighandcausedamageor
injury.
• Aftertheinstallation,makesurethereisnorefrigerantleakage.Iftherefrigerantleaks
intotheroomandbecomesexposedtoasourceofresuchasafanheater,stove,or
burner,itproducesatoxicgas.
• Donotsubjectthepipestostrongshocksduringthesealingtest.Itcanrupturethe
pipesandcauseseriousinjury.
CAUTION
Donotblockthewallsandtheceilinguntilthesealingtestandthechargingofthe
refrigerantgashavebeencompleted.
• 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41°F(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.
5.4. 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R410A.Usingthesamevacuumequipmentfordifferentrefrigerantsmay
damagethevacuumpumportheunit.
• Donotpurgetheairwithrefrigerants,butuseavacuumpumptoevacuatethe
system.
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(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(Liquid)and3-way
(Gas)valveswithahexagonwrench.
(6) Tightentheblankcapsofthe3-way(Liquid)valveand3-way(Gas)valvetothe
speciedtorque.
Tightening torque
Blank
cap
1/4in(6.35mm) 15to18ft·lb(20to25N·m)
3/8in(9.52mm) 15to18ft·lb(20to25N·m)
1/2in(12.70mm) 21to24ft·lb(28to32N·m)
5/8in(15.88mm) 22to26ft·lb(30to35N·m)
Charging port cap (R410A) 9to12ft·lb(12.5to16N·m)
Blank cap
Chargingport
Cap
Service hose
withvalvecore
Outdoor unit
3-wayvalve
Connectingpipe
Hexagonwrench
Usea3/6in(4mm)
hexagonwrench.
Lo
Hi
Service hose
Gaugemanifold
Vacuum pump
CAUTION
Useacleangaugemanifold
andcharginghoseforR410A
exclusively.
5.5. Additional charge
CAUTION
• Whenmovingandinstallingtheairconditioner,donotmixgasotherthanthespecied
refrigerantR410Ainsidetherefrigerantcycle.
• WhenchargingtherefrigerantR410A,alwaysuseanelectronicbalanceforrefrigerant
charging(tomeasuretherefrigerantbyweight).
• Whenchargingtherefrigerant,takeintoaccounttheslight
changeinthecompositionofthegasandliquidphases,
andalwayschargefromtheliquidphasesidewhose
compositionisstable.
• Addrefrigerantfromthechargingvalveafterthecompletion
ofthework.
• Iftheunitsarefurtherapartthanthemaximumpipelength,
correctoperationcannotbeguaranteed.
R410A
Liquid
Gas
5.6. Gas leakage inspection
CAUTION
• Afterconnectingthepiping,checkthealljointsforgasleakagewithgasleakdetector.
• Wheninspectinggasleakage,alwaysusethevacuumpumpforpressure.Donotuse
nitrogengas.
6. ELECTRICAL WIRING
6.1. Notes for 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208-230Vat60Hz.Itshouldbe
operatedwithintherangeof188to253V.
• Beforeconnectingthewires,makesurethepowersupplyisOFF.
• Useadedicatedpowersupplycircuit.Insufcientpowercapacityintheelectrical
circuitorimproperwiringmaycauseelectricshockorre.
• Installabreakeratthepowersupplyforeachoutdoorunit.Improperbreakerselection
cancauseelectricshockorre.
• Installaleakagecircuitbreakerinaccordancewiththerelatedlawsandregulations.
Animproperlyinstalledelectricalboxcovercancauseseriousaccidentssuchas
electricshockorrethroughexposuretodustorwater.
• Acircuitbreakerisinstalledinthepermanentwiring.Alwaysuseacircuitthatcan
tripallthepolesofthewiringandhasanisolationdistanceofatleast1/8in(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typeterminalsandtightentheterminalscrewstothespeciedtorques,
otherwise,abnormaloverheatingmaybeproducedandpossiblycauseserious
damageinsidetheunit.
• Makesuretosecuretheinsulationportionoftheconnectorcablewiththecable
clamp.Damagedinsulationcancauseashortcircuit.
• Fixcablessothatcablesdonotmakecontactwiththepipes(especiallyonhigh
pressureside).Donotmakepowersupplycableandconnectioncablecomein
contactwithvalves(Gas).
• Neverinstallapowerfactorimprovementcondenser.Insteadofimprovingthepower
factor,thecondensermayoverheat.
• Besuretoperformtheearthing(grounding)work.
Donotconnectearthing(grounding)wirestoagaspipe,waterpipe,lightningrodor
earthing(grounding)wireforatelephone.
- Connectiontoagaspipemaycauseareorexplosionifgasleaks.
- Connectiontoawaterpipeisnotaneffectiveearthing(grounding)methodifPVC
pipe is used.
- Connectiontotheearthing(grounding)wireofatelephoneortoalightningrodmay
causeadangerouslyabnormalriseintheelectricalpotentialiflightningstrikes.
Improperearthing(grounding)workcancauseelectricshocks.
• Securelyinstalltheelectricalboxcoverontheunit.Animproperlyinstalledservice
panelcancauseseriousaccidentssuchaselectricshockorrethroughexposureto
dustorwater.
CAUTION
• Theprimarypowersupplycapacityisfortheairconditioneritself,anddoesnot
includetheconcurrentuseofotherdevices.
• Donotstartoperationuntiltherefrigerantischargedcompletely.Thecompressorwill
failifitisoperatedbeforetherefrigerantpipingchargingiscomplete.
• Connectioncablebetweenindoorunitandoutdoorunitis208-230V.
• Besurenottoremovethermistorsensoretc.frompowerwiringandconnection
wiring.Compressormayfailifoperatedwhileremoved.
• Startwiringworkafterclosingbranchswitchandovercurrentbreaker.
• Useanearthleakagebreakerthatiscapableofhandlinghighfrequencies.Because
theoutdoorunitisinvertercontrolled,ahigh-frequencyearthleakagebreakeris
necessarytopreventamalfunctionofthebreakeritself.
• Whenusinganearthleakagebreakerthathasbeendesignedsolelyforearth(ground)
faultprotection,besuretoinstallafuse-equippedswitchorcircuitbreaker.
• DonotconnecttheACpowersupplytotheconnectionlineterminalboard.Improper
wiringcandamagetheentiresystem.
• Donotusecrossoverpowersupplywiringfortheoutdoorunit.
• Ifthetemperaturesurroundingthebreakeristoohigh,theamperageatwhichthe
breakercutsoutmaydecrease.
• 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.
(1) Servicecoverremoval
• Removethetwomountingscrews.
• Removetheservicecoverbypushingdownwards.
Hook
(3places)
Directionof
the service
panel removal
Service cover
9374995592-02_IM.indb 8 11/28/2018 11:05:21
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CAUTION
• Besuretocomplywithlocalcodeswhilerunningthewirefromtheindoorunittothe
outdoorunit(sizeofwireandwiringmethod,etc.).
• Everywiremustbeconnectedrmly.
• Nowireshouldbeallowedtotouchrefrigeranttubing,thecompressororanymoving
part.
• Loosewiringmaycausetheterminaltooverheatorresultinunitmalfunction.Are
hazardmayalsoexist.Therefore,besureallwiringistightlyconnected.
• Connectwirestothematchingnumbersofterminals.
1
2
3
1
2
3
L1
L2
Indoor unit
side terminal
Outdoor unit
side terminal
Disconnectswitch
(Locallypurchased)
Earthing(Grounding)line
Powerlines
Control line
230/208V
230/208V
230/208V
EARTH
(GROUND)
EARTH
(GROUND)
EARTH
(GROUND)
Single-phase,230/208V
Powersupplyline
NOTES:
Factoryinstalledprotectiveinlinefusesforindoorunits’conductorsareinstalledonthe
PowerSupplyPCB.
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:3/8in
(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 [lb·in (N·m)]
M4screw 11to16(1.2to1.8)
M5screw 17to25(2.0to3.0)
7. TEST RUN
Make a TEST RUN in accordance with installation manual for the indoor unit.
CHECK ITEMS
INDOOR UNIT
Forcheckitemsrefertotheinstallationmanualfortheindoorunit.
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?
CAUTION
Alwaysturnonthepower12hourspriortothestartoftheoperationinordertoensure
compressor protection.
(2) Fastenthepowersupplycableandtheconnectioncabletotheconduitholderusing
the lock nut.
(opentheknockoutholesifnecessary)
Lock
nut
Inter-unit line
Powersupply
Keeptheearthwirelongerthantheotherwires.
1-3/16”
(30
mm)
Powersupplycable
orconnectioncable
Earthwire
1-9/16”
(40
mm)
or more
(3) Connectthepowersupplycableandtheconnectioncabletoterminal.
(4) Fastenthepowersupplycableandconnectioncablewithcableclamp.
GG
GG
Controlbox
Terminal
Powersupplycable
Connectioncable
(indoorunitandoutdoor
unitconnectioncable)
Cableclamp
WARNING
• Disconnectswitchforovercurrentprotectiongiveninthetablebelowistobeinstalled
betweentheindoorunitandtheoutdoorunit.
• Useringterminalsandtightentheterminalscrewstothespeciedtorques,otherwise,
abnormaloverheatingmaybeproducedandpossiblycauseheavydamageinsidethe
unit.
• Matchtheterminalblocknumbersandconnectioncablecolorswiththoseofthe
outdoorunit.Erroneouswiringmaycauseburningoftheelectricparts.
• Connecttheconnectioncablesrmlytotheterminalblock.Imperfectinstallationmay
causeare.
• Alwaysfastentheoutsidecoveringoftheconnectioncablewiththecableclamp.(If
theinsulatorischafed,electricleakagemayoccur.)
• Securelyearththepowercableplug.
• Donotusetheearthscrewforanexternalconnector.Onlyuseforinterconnection
betweentwounits.
Disconnectswitch
20A
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8. PUMP DOWN
PUMP DOWN OPERATION (FORCED COOLING OPERATION)
Toavoiddischargingrefrigerantintotheatmosphereatthetimeofrelocationordisposal,
recoverrefrigerantbydoingtheforcedcoolingoperationaccordingtothefollowing
procedure.
(1) Conductpreliminaryoperationfor5to10minutesusingthetestrunoperation.
Fortestrunoperationrefertotheinstallationmanualfortheindoorunit.
(2) Closethevalvestemof2-wayvalvecompletely.
(3) Continuethetestrunoperationfor2to3minutes,thencloseallthevalvestemson
the3-wayvalves.
(4) Stoptheoperation.
•PresstheSTART/STOPbuttonoftheremotecontrollertostoptheoperation.
CAUTION
• Pleasechecktherefrigerantcircuitforanyleaksbeforestartingthepumpdown
operation.
• Donotproceedwiththepumpdownoperationifthereisnorefrigerantleftinthe
circuitduetobentorbrokenpiping.
• Duringthepumpdownoperation,besuretoturnoffthecompressorbeforeremoving
therefrigerantpiping.
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Fujitsu AOU18RGLX Installation guide

Fujitsu
Brand
Fujitsu
Model
AOU18RGLX
Type
Installation guide
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