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EnglishInstallation manualR410A Split series
Français
EspañolManual de instalaciónSerie Split R410A
INSTALLATION MANUALR410A Split Series
ModelRXS24LVJU
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1■English
Safety Precautions•ReadtheseSafetyPrecautionscarefullytoensurecorrectinstallation.•ThismanualclassifiestheprecautionsintoDANGER,WARNINGandCAUTION.Besuretofollowalltheprecautionsbelow:theyareallimportantforensuringsafety.
DANGER ...... Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING .... Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
CAUTION ..... Failure to follow any of CAUTION may in some cases result in grave consequences.
•Thefollowingsafetysymbolsareusedthroughoutthismanual:
Besuretoobservethisinstruction. Besuretoestablishagroundconnection. Neverattempt.
•Aftercompletinginstallation,testtheunittocheckforinstallationerrors.GivetheuseradequateinstructionsconcerningtheuseandcleaningoftheunitaccordingtotheOperationManual.
DANGER•Refrigerantgasisheavierthanairandreplacesoxygen.Amassiveleakcouldleadtooxygendepletion,especiallyinbasements,andanasphyxiationhazardcouldoccurleadingtoseriousinjuryordeath.
•Iftherefrigerantgasleaksduringinstallation,ventilatetheareaimmediately.Refrigerantgasmayproduceatoxicgasifitcomesincontactwithfiresuchasfromafanheater,stoveorcookingdevice.Exposuretothisgascouldcausesevereinjuryordeath.
•Aftercompletingtheinstallationwork,checkthattherefrigerantgasdoesnotleak.Refrigerantgasmayproduceatoxicgasifitcomesincontactwithfiresuchasfromafanheater,stoveorcookingdevice.Exposuretothisgascouldcausesevereinjuryordeath.
•Donotgroundunitstowaterpipes,telephonewiresorlightningrodsbecauseincompletegroundingcouldcauseasevereshockhazardresultinginsevereinjuryordeath,andtogaspipesbecauseagasleakcouldresultinanexplosionwhichcouldleadtosevereinjuryordeath.
•Safelydisposeofthepackingmaterials.Packingmaterials,suchasnailsandothermetalorwoodenparts,maycausestabsorotherinjuries.Tearapartandthrowawayplasticpackagingbagssothatchildrenwillnotplaywiththem.Childrenplayingwithplasticbagsfacethedangerofdeathbysuffocation.
•Donotinstallunitinanareawhereflammablematerialsarepresentduetoriskofexplosionresultinginseriousinjuryordeath.
•Donotgroundunitstotelephonewiresorlightningrodsbecauselightningstrikescouldcauseasevereshockhazardresultinginsevereinjuryordeath,andtogaspipesbecauseagasleakcouldresultinanexplosionwhichcouldleadtosevereinjuryordeath.
WARNING•Installationshallbelefttotheauthorizeddealeroranothertrainedprofessional.Improperinstallationmaycausewaterleakage,electricalshock,fire,orequipmentdamage.
•Installtheairconditioneraccordingtotheinstructionsgiveninthismanual.Incompleteinstallationmaycausewaterleakage,electricalshock,fireorequipmentdamage.
•Besuretousethesuppliedorexactspecifiedinstallationparts.Useofotherpartsmaycausetheunittocometofall,waterleakage,electricalshock,fireorequipmentdamage.
•Installtheairconditioneronasolidbasethatislevelandcansupporttheweightoftheunit.Aninadequatebaseorincompleteinstallationmaycauseinjuryorequipmentdamageintheeventtheunitfallsoffthebaseorcomesloose.
•Electricalworkshallbecarriedoutinaccordancewiththeinstallationmanualandthenational,stateandlocalelectricalwiringcodes.Insufficientcapacityorincompleteelectricalworkmaycauseelectricalshock,fireorequipmentdamage.
•Besuretouseadedicatedpowercircuit.Neveruseapowersupplysharedbyanotherappliance.Followallappropriateelectricalcodes.
•Forwiring,useawireorcablelongenoughtocovertheentiredistancewithnosplicesifpossible.Donotuseanextensioncord.Donotputotherloadsonthepowersupply.Useanonlyaseparatededicatedpowercircuit.(Failuretodosomaycauseabnormalheat,electricshock,fireorequipmentdamage.)
•Usethespecifiedtypesofwiresforelectricalconnectionsbetweentheindoorandoutdoorunits.Followallstateandlocalelectricalcodes.Firmlyclamptheinter-unitwiresotheirterminalsreceivenoexternalstresses.Incompleteconnectionsorclampingmaycauseterminaloverheating,fireorequipmentdamage.
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Safety Precautions WARNING
•Afterconnectingallwiresbesuretoshapethecablessothattheydonotputunduestressontheelectricalcovers,panelsorterminals.Installcoversoverthewires.Incompletecoverinstallationmaycauseterminaloverheating,electricalshock,fireorequipmentdamage.
•Wheninstallingorrelocatingthesystem,besuretokeeptherefrigerantcircuitfreefromallsubstancesotherthanthespecifiedrefrigerant(R410A),suchasair.(Anypresenceofairorotherforeignsubstanceintherefrigerantcircuitcausesanabnormalpressurerisewhichmayresultinrupture,resultingininjury.)
•Duringpump-down,stopthecompressorbeforeremovingtherefrigerantpiping.Ifthecompressorisstillrunningandthestopvalveisopenduringpump-down,airwillbesuckedinwhentherefrigerantpipingisremoved,causingabnormallyhighpressurewhichcouldleadtoequipmentdamageorandpersonalinjury.
•Duringinstallation,attachtherefrigerantpipingsecurelybeforerunningthecompressor.Iftherefrigerantpipesarenotattachedandthestopvalveisopenduringinstallation,airwillbesuckedinwhenthecompressorisrun,causingabnormallyhighpressurewhichcouldleadtoequipmentdamageandpersonalinjury.
•Besuretoinstallagroundfaultcircuitinterrupterbreaker.Failuretoinstallagroundfaultcircuitinterrupterbreakermayresultinelectricallyshocks,orfirepersonalinjury.
CAUTION•Donotinstalltheairconditionerwheregasleakagewouldbeexposedtoopenflames.Ifthegasleaksandbuildsuparoundtheunit,itmaycatchfire.
•Establishdrainpipingaccordingtotheinstructionsofthismanual.Inadequatepipingmaycausewaterdamage.
•Tightentheflarenutaccordingtothespecifiedtorque.Atorquewrenchshouldbeused.Iftheflarenutistightenedtoomuch,theflarenutmaycrackovertimeandcauserefrigerantleakage.
•Donottouchtheheatexchangerfins.Improperhandlingmayresultininjury.
•Beverycarefulaboutproducttransportation.SomeproductsusePPbandsforpackaging.DonotuseanyPPbandsforameansoftransportation.Itisdangerous.
•Makesuretoprovideforadequatemeasuresinordertopreventthattheoutdoorunitbeusedasashelterbysmallanimals.Smallanimalsmakingcontactwithelectricalpartscancausemalfunctions,smokeorfire.Pleaseinstructthecustomertokeeptheareaaroundtheunitclean.
•Thetemperatureofrefrigerantcircuitwillbehigh,pleasekeeptheinter-unitwireawayfromcopperpipesthatarenotthermallyinsulated.
•ElectricalworkmustbeperformedinaccordancewiththeNEC/CECbyauthorizedpersonnelonly.
AccessoriesAccessoriessuppliedwiththeoutdoorunit:
Installationmanual 1 Drainsocketassembly
1 Tube 2
Bindingband 2
A B
C
D
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Precautions for Selecting the Location1) Chooseaplacesolidenoughtobeartheweightandvibrationoftheunit,wheretheoperationsoundswillnotbeamplified.2) Choosealocationwherethehotairdischargedfromtheunitortheoperationsoundswillnotdisturbtheneighborsoftheuser.3) Avoidinstallingnearbedroomssothatoperationsoundswillnotbeaproblem.4) Theremustbesufficientspaceforcarryingtheunitintoandoutofthesite.5) Theremustbesufficientspaceforairpassageandnoobstructionsaroundtheairinletandtheairoutlet.6) Thesitemustbefreefromthepossibilityofflammablegasleakageinanearbyplace.7) Installunits,powercordsandinter-unitwireatleast10ft(3m)awayfromtelevisionandradiosets.Thisistopreventinterference
toimagesandsounds.(Noisesmaybeheardeveniftheyaremorethan10ft(3m)awaydependingonradiowaveconditions.)8) Incoastalareasorotherplaceswithsaltyatmosphereofsulfategas,corrosionmayshortenthelifeoftheairconditioner.9) Sincedrainflowsoutoftheoutdoorunit,donotplaceanythingundertheunitwhichmustbekeptawayfrommoisture.
NOTECannotbeinstalledhangingfromceilingorstacked.
CAUTIONWhenoperatingtheairconditionerinalowoutdoorambienttemperature,besuretofollowtheinstructionsdescribedbelow.•Topreventexposuretowind,installtheoutdoorunitwithitssuctionsidefacingthewall.
•Neverinstalltheoutdoorunitatasitewherethesuctionsidemaybeexposeddirectlytowind.
•Topreventexposuretowind,itisrecommendedtoinstallabaffleplateontheairdischargesideoftheoutdoorunit.
•Inheavysnowfallareas,selectaninstallationsitewherethesnowwillnotaffecttheunit.
Construct a large canopy.Construct a pedestal.
Install the unit high enough off the ground to prevent burying in snow.
Precautions on Installation•Checkthestrengthandleveloftheinstallationgroundsothattheunitwillnotcauseanyoperatingvibrationornoiseafterinstalled.•Inaccordancewiththefoundationdrawing,fixtheunitsecurelybymeansofthefoundationbolts.(Prepare4setsof5/16or3/8inch(M8orM10)foundationbolts,nutsandwasherseachwhichareavailableonthemarket.)
•Itisbesttoscrewinthefoundationboltsuntiltheirendsare3/4inch(20mm)fromthefoundationsurface.
3/4
inch
(2
0mm
)
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Outdoor Unit Installation Drawings
Max. allowable piping height
Min. allowable piping length
Max. allowable piping length 98.4ft (30m)
4.92ft (1.5m)
65.6ft (20m)
Liquid pipe
Gas pipe
O.D. 1/4 inch (6.4mm)
O.D. 5/8 inch (15.9mm)
0.21oz/ft (20g/m)
Additional refrigerant required for refrigerant pipe exceeding 32.8ft (10m) in length.
**
*
* Be sure to add the proper amount of additional refrigerant. Failure to do so may result in reduced performance.
** The suggested shortest pipe length is 4.92ft (1.5m), in order to avoid noise from the outdoor unit and vibration. (Mechanical noise and vibration may occur depending on how the unit is installed and the environment in which it is used.)
Wrap the insulation pipe with the finishing tape from bottom to top.
Allow 11-13/16 inch (300mm) of work space below the ceiling surface.
9-7/8 (250) from wallAllow space for piping and electrical servicing.
Right side plate
13-3/4
(350)
Clamping material
Insulation tube
Bottom frameTape
Also insulate the connection on the outdoor unit.
Use tape or insulating material on all connections to prevent air from getting in between the copper piping and the insulation tube.Be sure to do this if the outdoor unit is installed above.
(Foot bolt-h
ole
centers)
(Foot bolt-hole centers)
24-7/16(620)
Level mounting base (available separately)
If there is the danger of the unit falling or overturning, fix the unit with foundation bolts, or with wire or other means.
If the location does not have good drainage, place the unit on a level mounting base (or a plastic pedestal). Install the outdoor unit in a level position. Failure to do so may result in water leakage or accumulation.
CAUTION** Set the piping length from 4.92ft (1.5m) to 98.4ft (30m).
unit : inch (mm)
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Installation Guidelines •Whereawallorotherobstacleisinthepathofoutdoorunit’sinletoroutletairflow,followtheinstallationguidelinesbelow.•Foranyofthebelowinstallationpatterns,thewallheightontheoutletsideshouldbe47-1/4inch(1200mm)orless.
More than 3-15/16 (100)
More than 13-3/4 (350)
Side view
47-1/4(1200)or less
More than 1-15/16 (50)
More than 1-15/16 (50)
More than 13-3/4 (350)
Top view
More than 3-15/16 (100)
unit: inch (mm)
Wall facing one side Walls facing two sides
Top view
More than 3-15/16 (100)
More than 13-3/4 (350)More than
1-15/16 (50)
Walls facing three sides
Outdoor Unit Installation1. Installing outdoor unit
1) Wheninstallingtheoutdoorunit,referto“PrecautionsforSelectingtheLocation”andthe“OutdoorUnitInstallationDrawings”.2) Ifdrainworkisnecessary,followtheproceduresbelow.
2. Drain work•Usedrainplugfordrainage.•Ifthedrainportiscoveredbyamountingbaseorfloorsurface,placeadditionalfootbasesofatleast3-15/16inch(100mm)inheightundertheoutdoorunit’sfeet.
•Incoldareas,donotuseadrainsocket(A),draincaps(B)andadrainhosewiththeoutdoorunit.(Otherwise,drainwatermayfreeze,impairingheatingperformance.)
1) Insertdrainreceiver(C)ontodrainsocket(A)anddraincap(B)beyond4projectionsarounddrainsocketanddraincap.
2) Insertdrainsocketanddraincapsintotheirmatchingdrainhole;Drainsocket(A)intodrainholeIanddraincaps(B)intodrainholeIIandIII.Afterinsertion,turnthemabout40°clockwise.
Projections Projections
(C) Drain receiver
(A) Drain socket (B) Drain cap
III
III
(Besurenottoinsertthemintowrongdrainholes,ortherecauseswaterleakage.)
(Viewfrombottom)
NOTECheckthatthedrainreceiver(C)iscorrectlyengagedwiththeprojectionsofthedrainsocket(A)anddraincap(B).Otherwise,waterleakagemayresult.
Projections (4 points)
Projections (4 points)
3) Connectvinylhoseonthemarket(internaldiameterof1inch(25mm))todrainsocket(A).(Ifthehoseistoolongandhangsdown,fixitcarefullytopreventthekinks.)
4) MakesurethatthereisnowaterleakagefromportionI,II,orIII.
NOTEIfthedrainholesoftheoutdoorunitarecoveredwiththemountingbracketorthefloor,raisetheunittoprovidethespaceofmorethan3-15/16inch(100mm)underthelegoftheoutdoorunit.
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Outdoor Unit Installation3. Flaring the pipe end
1) Cutthepipeendwithapipecutter.2) Removeburrswiththecutsurfacefacing
downwardsothatthechipsdonotenterthepipe.3) Puttheflarenutonthepipe.4) Flarethepipe.5) Checkthattheflaringisproperlymade.
WARNING•Donotusemineraloilonflaredpart.•Preventmineraloilfromgettingintothesystemasthiswouldreducethelifetimeoftheunits.•Neverusepipingwhichhasbeenusedforpreviousinstallations.Onlyusepartswhicharedeliveredwiththeunit.•NeverinstalladriertothisR410Aunitinordertoguaranteeitslifetime.•Thedryingmaterialmaydissolveanddamagethesystem.•Incompleteflaringmaycauserefrigerantgasleakage.
4. Refrigerant piping
CAUTION•Usetheflarenutfixedtothemainunittopreventitfromcrackinganddeterioratingfromage.•Topreventgasleakage,applyrefrigerationoilonlytotheinnersurfaceoftheflare.(UserefrigerationoilforR410A.)•Usetorquewrencheswhentighteningtheflarenutstopreventdamagetotheflarenutsandgasleakage.
Flare nut tightening torque
Liquid side
1/4 inch (6.4mm)
10.4-12.7ft • lbf
(14.2-17.2N • m)
Gas side
5/8 inch (15.9mm)
45.6-55.6ft • lbf
(61.8-75.4N • m)
Valve cap tightening torque
Liquid side
1/4 inch (6.4mm)
15.9-20.2ft • lbf
(21.6-27.4N • m)
Gas side
5/8 inch (15.9mm)
35.5-44.0ft • lbf
(48.1-59.7N • m)
Service port cap tightening torque
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
[Apply oil]• Align the centers of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.
7.9-10.8ft • lbf
(10.8-14.7N • m)
(Cut exactly at right angles.) Remove burrs.
Set exactly at the position shown below.
A
Flaring
Die
Check
Flare’s inner surface must be flaw-free.
The pipe end must be evenly flared in a perfect circle.
Make sure that the flare nut is fitted.
A 0-0.020 inch (0-0.5mm)
Clutch-type
Flare tool for R410A
0.039-0.059 inch (1.0-1.5mm)
Clutch-type (Rigid-type)
0.059-0.079 inch (1.5-2.0mm)
Wing-nut type (Imperial-type)
Conventional flare tool
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5. Purging air and checking gas leakage
WARNING•Donotmixanysubstanceotherthanthespecifiedrefrigerant(R410A)intotherefrigerationcycle.•Whenrefrigerantgasleaksoccur,ventilatetheroomassoonandasmuchaspossible.•R410A,aswellasotherrefrigerants,shouldalwaysberecoveredandneverbereleaseddirectlyintotheenvironment.•UseavacuumpumpforR410Aexclusively.Usingthesamevacuumpumpfordifferentrefrigerantsmaydamagethevacuumpumportheunit.
•Whenpipingworkiscompleted,itisnecessarytopurgetheairandcheckforgasleakage.
•Ifusingadditionalrefrigerant,performairpurgingfromtherefrigerantpipesandindoorunitusingavacuumpump,thenchargeadditionalrefrigerant.
•Useahexagonalwrench(3/16inch(4mm))tooperatethestopvalverod.•Allrefrigerantpipejointsshouldbetightenedwithatorquewrenchatthespecifiedtighteningtorque.
1) Connectprojectionsideofcharginghose(whichcomesfromgaugemanifold)togasstopvalve’sserviceport.
2) Fullyopengaugemanifold’slow-pressurevalve(Lo)andcompletelycloseitshigh-pressurevalve(Hi).(High-pressurevalvesubsequentlyrequiresnooperation.)
3) Dovacuumpumpingandmakesurethatthecompoundpressuregaugereads–29.9inHg(–0.1MPa).*1
4) Closegaugemanifold’slow-pressurevalve(Lo)andstopvacuumpump.(Keepthisstateforafewminutestomakesurethatthecompoundpressuregaugepointerdoesnotswingback.)*2
5) Removecapsfromliquidstopvalveandgasstopvalve.
6) Turntheliquidstopvalve’srod90degreescounterclockwisewithahexagonalwrenchtoopenvalve.Closeitafter5seconds,andcheckforgasleakage.Usingsoapywater,checkforgasleakagefromindoorunit’sflareandoutdoorunit’sflareandvalverods.Afterthecheckiscomplete,wipeallsoapywateroff.
7) Disconnectcharginghosefromgasstopvalve’sserviceport,thenfullyopenliquidandgasstopvalves.(Donotattempttoturnvalverodbeyonditsstop.)
8) Tightenvalvecapsandserviceportcapsfortheliquidandgasstopvalveswithatorquewrenchatthespecifiedtorques.
*1.Pipelengthvs.vacuumpumpruntime
Pipelength Upto49.2ft(15m) Morethan49.2ft(15m)
Runtime Notlessthan10min. Notlessthan15min
*2.Ifthecompoundpressuregaugepointerswingsback,refrigerantmayhavewatercontentoraloosepipejointmayexists.Checkallpipejointsandretightennutsasneeded,thenrepeatsteps2)through4).
Gauge manifold
Compound pressure gauge
Pressure meter
Low-pressure valve
High-pressure valve
Charging hoses
Vacuum pump
Valve caps
Service port
Liquid stop valve
Gas stop valve
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Outdoor Unit Installation6. Refilling the refrigerant
Checkthetypeofrefrigeranttobeusedonthemachinenameplate.Precautions when adding R410AFill from the gas pipe in liquid form.Itisamixedrefrigerant,soaddingitingasformmaycausetherefrigerantcompositiontochange,preventingnormaloperation.
1) Beforefilling,checkwhetherthecylinderhasasiphonattachedornot.(Itshouldhavesomethinglike“liquidfillingsiphonattached”displayedonit.)
Filling a cylinder with an attached siphon
Stand the cylinder upright when filling.
There is a siphon pipe inside, so the cylinder need not be upside-down to fill with liquid.
Filling other cylinders
Turn the cylinder upside-down when filling.
•BesuretousetheR410Atoolstoensurepressureandtopreventforeignobjectsentering.
7. Refrigerant piping work7-1 Caution on pipe handling
1) Protecttheopenendofthepipeagainstdustandmoisture.2) Allpipebendsshouldbeasgentleaspossible.Useapipebenderfor
bending.
7-2 Selection of copper and heat insulation materialsWhenusingcommercialcopperpipesandfittings,observethefollowing:1) Insulationmaterial:Polyethylenefoam
Heattransferrate:0.041to0.052W/mK(0.024to0.030Btu/fth°F(0.035to0.045kcal/mh°C))BesuretouseinsulationthatisdesignedforusewithHVACSystems.
2) Besuretoinsulateboththegasandliquidpipingandtoprovideinsulationdimensionsasbelow.
Gasside LiquidsideGaspipethermal
insulationLiquidpipethermal
insulationO.D.5/8inch(15.9mm)
O.D.1/4inch(6.4mm)
I.D.5/8-25/32inch(16-20mm)
I.D.5/16-13/32inch(8-10mm)
Minimumbendradius Thickness13/32inch(10mm)Min.1-15/16inch(50mm)
ormore1-3/16inch(30mm)
ormoreThickness
0.039inch(1.0mm)(C1220T-O)
Thickness0.031inch(0.8mm)
(C1220T-O)
•Useseparatethermalinsulationpipesforgasandliquidrefrigerantpipes.
Wall
If no flare cap is available, cover the flare mouth with tape to keep dirt or water out.
Be sure to place a cap.
Rain
Gas pipeLiquid pipe
Gas pipe insulation
Liquid pipe insulation
Finishing tape Drain hose
Inter-unit wire
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Pump Down OperationIn order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Removethevalvecapfromliquidstopvalveandgasstopvalve.2) Carryoutforcedcoolingoperation.3) After5to10minutes,closetheliquidstopvalvewithahexagonalwrench.4) After2to3minutes,closethegasstopvalveandstopforcedcoolingoperation.
Forced cooling operation
■ Using the indoor unit ON/OFF switch
PresstheindoorunitON/OFFswitchforatleast5seconds.(Theoperationwillstart.)• Forcedcoolingoperationwillstopautomaticallyafteraround15minutes.
Tostoptheoperation,presstheindoorunitON/OFFswitch.
■ Using the indoor unit’s remote controller
1) Press“MODE”buttonandselectthecoolingmode.2) Press“ON/OFF”buttontoturnonthesystem.3) Pressbothof“TEMP”buttonand“MODE”buttonatthesametime.4) Press“MODE”buttontwice.( willbedisplayedandtheunitwillenterforcedcoolingoperation.)• Forcedcoolingoperationwillstopautomaticallyafteraround30minutes.
Tostoptheoperaion,press“ON/OFF”button.
Wiring WARNING
•Donotusetappedwires,strandedwires,extensioncords,orstarburstconnections,astheymaycauseoverheating,electricalshock,orfire.
•Donotuselocallypurchasedelectricalpartsinsidetheproduct.(Donotbranchthepowerforthedrainpump,etc.,fromtheterminalblock.)Doingsomaycauseelectricshockorfire.
•Besuretoinstallagroundfaultcircuitinterrupterbreaker.(Onethatcanhandlehigherharmonics.)(Thisunitusesaninverter,whichmeansthatitmustbeusedagroundfaultcircuitinterrupterbreakercapablehandlingharmonicsinordertopreventmalfunctioningofthegroundfaultcircuitinterrupterbreakeritself.)
•Useanall-poledisconnectiontypebreakerwithatleast1/8inch(3mm)betweenthecontactpointgaps.•Whencarryingoutwiringconnection,takecarenottopullattheconduit.•Donotconnectthepowerwiretotheindoorunit.Doingsomaycauseelectricshockorfire.
•Donotturnonthesafetybreakeruntilallworkiscompleted.
1) Striptheinsulationfromthewire(3/4inch(20mm)).
2) Connecttheconnectionwiresbetweentheindoorandoutdoorunitssothattheterminalnumbersmatch.Tightentheterminalscrewssecurely.Werecommendaflatheadscrewdriverbeusedtotightenthescrews.
Close
valve cap
Hexagonal wrench
Service port
Liquid stop valve
Gas stop valve
123
1 GR2 3
Safety breaker 20A
Ground faultcircuit interrupter
Ground
Firmly fix the wires with the terminal screws.
Outdoor unit
Indoor unit
Power supply60Hz 208-230V
L1 L2Use AWG16 if the connection wirelength is less than 32.8ft (10m), orAWG14 if it is 32.8ft (10m) or more. Use AWG 14 wires.
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Wiring<Methodofmountingconduit>
Passwiresthroughtheconduitandsecurethemwithalocknut.
Wire retainer
Conduit mounting plateService port
Lock nut
Conduit1/2 inch (21.3mm)
Conduit mounting plate
Tube(Accessory)
Binding band(Accessory)
Secure the wires firmly using the binding band, as shown in the figure. Secure firmly, making sure no outside pressure is exerted on the terminals.
Power supply terminal block
L1 L21 2 3
• Use the specified wires and connect them securely.
• Shape the wires so that there is no lifting of the service hatch or other structural parts.
D
C
Observethenotesmentionedfollowingwhenwiringtothepowersupplyterminalblock.Precautionstobetakenforpowersupplywiring.
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CAUTION•Whenconnectingtheconnectionwirestotheterminalblockusingasinglecorewire,besuretoperformcurling.Problemswiththeworkmaycauseheatandfires.
•Ifthestrandedwiresmustbeused,makesuretousetheroundcrimp-styleterminalforconnectiontothepowersupplyterminalblock.Placetheroundcrimp-styleterminalsonthewiresuptothecoveredpartandsecureinplace.
Stranded wire
Round crimp-styleterminal
•GroundterminalinstallationUsethefollowingmethodwheninstallingtheroundcrimp-styleterminal.
Good Wrong
Round crimp-style terminal
Flat washer
Screw
Flat washer
Round crimp-style terminal
Screw
3) Pullthewireandmakesurethatitdoesnotdisconnect.Thenfixthewireinplacewithawirestop.
Facility Setting (cooling at low outdoor temperature)This function is designed for facilities such as equipment or computer rooms. It is never to be used in a residence or office where people occupy the space.1) Youcanexpandtheoperationrangeto14°F(–10°C)byturningonswitchB(SW4)onthePCB.Iftheoutdoortemperaturefalls
to–0.4°F(–18°C)orlower,theoperationwillstop.Iftheoutdoortemperaturerises,theoperationwillstartagain.
LED-A
SW4ON
AB
CD
S102
SW1
S2
Turn on switch B.
CAUTION•Iftheoutdoorunitisinstalledwheretheheatexchangeroftheunitisexposedtodirectwind,provideawindbreakwall.•Intermittentnoisesmaybeproducedbytheindoorunitduetotheoutdoorfanturningonandoffwhenusingfacilitysettings.•Donotplacehumidifiersorotheritemswhichmightraisethehumidityinroomswherefacilitysettingsarebeingused.Ahumidifiermightcausedewcondensationfromtheindoorunitoutletvent.
•Usetheindoorunitatthehighestlevelofairflowrate.
Stripping wire at terminal block
Good Wrong
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Trial Operation and Testing1. Trial operation and testing
1-1Measurethesupplyvoltageandmakesurethatitfallsinthespecifiedrange.
1-2Trialoperationshouldbecarriedoutineithercoolingorheatingmode.
•Incoolingmode,selectthelowestprogrammabletemperature;inheatingmode,selectthehighestprogrammabletemperature.1) Trialoperationmaybedisabledineithermodedependingontheroomtemperature.2) Aftertrialoperationiscomplete,setthetemperaturetoanormallevel(78°Fto82°F(26°Cto28°C)incoolingmode,
68°Fto75°F(20°Cto24°C)inheatingmode).3) Forprotection,thesystemdisablesrestartoperationfor3minutesafteritisturnedoff.
1-3Carryoutthetestoperationinaccordancewiththeoperationmanualtoensurethatallfunctionsandparts,suchasfinmovement,areworkingproperly.•Theairconditionerrequiresasmallamountofpowerinitsstandbymode.Ifthesystemisnottobeusedforsometimeafterinstallation,shutoffthecircuitbreakertoeliminateunnecessarypowerconsumption.
•Ifthecircuitbreakertripstoshutoffthepowertotheairconditioner,thesystemwillrestoretheoriginaloperationmodewhenthecircuitbreakerisopenedagain.
2. Test itemsTestitems Symptom Check
Indoorandoutdoorunitsareinstalledproperlyonsolidbases. Fall,vibration,noise
Norefrigerantgasleaks.Incompletecooling/heatingfunction
Refrigerantgasandliquidpipesandindoordrainhoseextensionarethermallyinsulated.
Waterleakage
Draininglineisproperlyinstalled. Waterleakage
Systemisproperlygrounded. Electricalleakage
Thespecifiedwiresareusedforinter-unitwiring. Inoperativeorburndamage
Indoororoutdoorunit’sairinletorairoutlethasclearpathofair.Stopvalvesareopened.
Incompletecooling/heatingfunction
Indoorunitproperlyreceivesremotecontrolcommands. Inoperative
01_EN_3P300674-2B.indd 12 8/28/2012 6:15:27 PM