Fujitsu ARU24RGLX Installation guide

Brand: Fujitsu

Model: ARU24RGLX

Type: Installation guide

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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Electri-

cal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.

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 efficiently.

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danger,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certified

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.

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wir-

ing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 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.

AIRCONDITIONER

INDOORUNIT(Ducttype)

INSTALLATION MANUAL

PARTNo.9381386246-02

 Forauthorizedservicepersonnelonly.

Contents

1. SAFETYPRECAUTIONS ……………………………………………… 1

1.1. IMPORTANT!Pleasereadbeforestarting ……………………… 1

1.2. Specialprecautions ………………………………………………… 1

2. PRODUCTSPECIFICATION …………………………………………… 2

2.1. PrecautionsforusingR410Arefrigerant ………………………… 2

2.2. Installationtools …………………………………………………… 2

2.3. Accessories ………………………………………………………… 2

2.4. Piperequirement …………………………………………………… 3

2.5. Electricalrequirement ……………………………………………… 3

2.6. Optional parts ……………………………………………………… 3

2.7. Selectingthepipematerial ………………………………………… 3

3. INSTALLATIONWORK ………………………………………………… 4

3.1. Selectinganinstallationlocation ………………………………… 4

3.2. Installationdimension ……………………………………………… 4

3.3. Installingtheunit …………………………………………………… 4

3.4. Intakeductconnection ……………………………………………5

3.5. Draininstallation …………………………………………………… 6

3.6. Pipe installation …………………………………………………… 7

3.7. Freshairintake ……………………………………………………… 8

3.8. Electricalwiring …………………………………………………… 8

3.9. Remotecontrollerinstallation ……………………………………… 9

4. OPTIONALINSTALLATIONWORK ………………………………… 10

4.1. Optionalkitinstallation ………………………………………… 10

4.2. Externalinputandoutput ……………………………………… 10

4.3. Remotesensor ………………………………………………… 11

5. REMOTECONTROLINSTALLATION ……………………………… 11

5.1. Groupcontrol …………………………………………………… 11

5.2. Multiple remote control ………………………………………… 11

5.3. DIPswitch101setting …………………………………………… 11

6. FUNCTIONSETTING ………………………………………………… 12

6.1. Function details ………………………………………………… 12

6.2. Staticpressure …………………………………………………… 13

7. CHECKLIST …………………………………………………………… 13

8. TESTRUN ……………………………………………………………… 13

8.1. Checkitems ……………………………………………………… 13

8.2. Operation method ……………………………………………… 14

9. FINISHING ……………………………………………………………… 14

10.CUSTOMERGUIDANCE ……………………………………………… 14

11. ERRORCODES ……………………………………………………… 14

9381386246-02_IM.indb 1 17-May-19 10:00:17 AM

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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.

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profes-

sionalinstallersonlyinaccordancewiththismanual.Installationbynon-professional

orimproperinstallationoftheproductmight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.

•Donotturnonthepoweruntilallworkhasbeencompleted.Turningonthepowerbe-

foretheworkiscompletedcancauseseriousaccidentssuchaselectricshockorre.

•Ifrefrigerantleakswhenyouareworking,ventilatethearea.Iftheleakingrefrigerant

isexposedtoadirectame,itmayproduce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meanstoacceleratethedefrostingprocessortoclean,otherthanthose

recommended by the manufacturer.

•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

•Readcarefullyallsafetyinformationwritteninthismanualbeforeyouinstallorusethe

air conditioner.

•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adevicenotauthorized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1/8in(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anexplo-

sive atmosphere.

•Thisproductcontainsnouser-serviceableparts.Alwaysconsultexperiencedservice

technicians for repairing.

•Whenmovingorrelocatingtheairconditioner,consultexperiencedservicetechnicians

for disconnection and reinstallation of the product.

•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theproduct.

Condensationdrippingfromtheproductmightgetthemwet,andmaycausedamage

or malfunction to the property.

•Becarefulnottoscratchtheairconditionerwhenhandlingit.

2. PRODUCT SPECIFICATION

2. 1. Precautions for using R410A refrigerant

• Thebasicinstallationworkproceduresarethesameasconventionalrefrigerant

(R22)models.

 However,paycarefulattentiontothefollowingpoints:

• Sincetheworkingpressureis1.6timeshigherthanthatofconventionalrefriger-

ant(R22)models,someofthepipingandinstallationandservicetoolsarespecial.

(Refertothefollowingtable.)

 Especially,whenreplacingaconventionalrefrigerant(R22)modelwithanewrefriger-

antR410Amodel,alwaysreplacetheconventionalpipingandarenutswiththe

R410Apipingandarenuts.

• ModelsthatuserefrigerantR410Ahaveadifferentchargingportthreaddiameterto

preventerroneouschargingwithconventionalrefrigerant(R22)andforsafety.There-

fore,checkbeforehand.[ThechargingportthreaddiameterforR410Ais1/2-20UNF.]

• Bemorecarefulthatforeignmatter(oil,water,etc.)doesnotenterthepipingthan

withrefrigerant(R22)models.Also,whenstoringthepiping,securelysealtheopen-

ing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refriger-

ant composition is stable.

2. 2. Installation tools

Tool name Contents of change

Gauge manifold

PressureishighandcannotbemeasuredwithaR22

gauge.Topreventerroneousmixingofotherrefrigerants,

the diameter of each port has been changed.

Itisrecommendedtousegaugewithseals-30inHgto768

psi(-0.1to5.3MPa)forhighpressure.

-30inHgto551psi(-0.1to3.8MPa)forlowpressure.

Charge 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.

■

Copper pipes

Itis necessary to use seamless copper pipes and it is desirable that the amount of residual

oilislessthan0.004oz/100ft(40mg/10m).Donotusecopperpipeshavingacollapsed,

deformedordiscoloredportion(especiallyontheinteriorsurface).Otherwise,theexpansion

valueorcapillarytubemaybecomeblockedwithcontaminants.

AsanairconditionerusingR410AincurspressurehigherthanwhenusingR22,itisneces-

sarytochooseadequatematerials.

WARNING

•Donotusetheexisting(forR22)pipingandarenuts.

 Iftheexistingmaterialsareused,thepressureinsidetherefrigerantcyclewillrise

andcausefailure,injury,etc.(UsethespecialR410Amaterials.)

•Use(rellorreplacewith)speciedrefrigerant(R410A)only.Useofunspeciedrefrig-

erantcancauseproductmalfunction,burst,orinjury.

•Donotmixanygasorimpuritiesexceptspeciedrefrigerant(R410A).Inowofairor

applicationofunspeciedmaterialmakestheinternalpressureoftherefrigerantcycle

toohigh,andmaycauseproductmalfunction,burstofpiping,orinjury.

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.

•Thefollowinginstallationpartsarefurnished.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.

9381386246-02_IM.indb 2 17-May-19 10:00:17 AM

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2. 5. Electrical requirement

Theindoorunitispoweredfromtheoutdoorunit.Donotpowerindoorunitfromseparate

power source.

WARNING

Standardforelectricalwiringandequipmentdiffersineachcountryorregion.Before

youstartelectricalworking,conrmrelatedregulations,codes,orstandards.

Cable

Conductor size

(AWG)

Remarks

Connectioncable AWG18to16

3Wire+Earth(Ground),

1Ø208/230V

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

2%ormore.

Cable

Conductor size

(AWG)

Remarks

Remotecontrollercable(2-wiretype) AWG22to16

Non-polar2-wired,

twisted pair

2. 6. Optional parts

Refertoeachinstallationmanualforthemethodofinstallingoptionalparts.

Parts name Model No. Application

Wiredremotecontroller UTY-RNRUZ2

For air conditioner operation

(2-wiredtype)

Simpleremotecontroller

UTY-RSRY

For air conditioner operation

(2-wiredtype)

UTY-RHRY

W-LANinterface UTY-TFSXZ2 ForwirelessLANcontrol

IRreceiverunit UTY-LBTUM For air conditioner operation

Thermostat convertor UTY-TTRX For air conditioner operation

Externalinputandoutput

PCB

UTY-XCSX

Forconnectingexternal

devices

Externalinputandoutput

PCBbracket

UTZ-GXNA

ForinstallingtheExternalinput

andoutputPCB

Externalconnectkit UTY-XWZXZG For control output port

Airlterkit UTD-LFNA/B/C

LFNA:36/42/48model

LFNB:18/24/30model

LFNC:12model

2. 7. Selecting the pipe material

CAUTION

•Donotuseexistingpipesfromanotherrefrigerationsystemorrefrigerant.

•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0.04oz/100ft(40mg/10m).

•Donotusecopperpipesthathaveacollapsed,deformed,ordiscoloredportion(es-

pecially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(R22)refrigerant,itisnecessaryto

chooseadequatematerials.

•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) 0.039(1.20)

Name and Shape Q’ty Description

Operating Manual

InstallationManual

(indoorunit)

1 (Thisbook)

SpecialnutA

(largeange)

For suspending the indoor unit

from ceiling

SpecialnutB

(smallange)

Washer

Couplerheatinsulation(large)

Forindoorsidepipejoint

(gaspipe)

Couplerheatinsulation(small)

Forindoorsidepipejoint

(liquidpipe)

Cabletie(large)

4 Forxingtheheatinsulation

Cabletie(medium)

Forxingtheremotecontroller

cable

Cabletie(small)

Forxingtheremotecontroller

cable

Drainhoseinsulation

Insulatesthedrainhoseand

vinyl hose

Drainhose

For installing drain pipe

(Ø1in[I.D.],Ø1-1/4in[O.D.])

Hose Band

1 For installing drain hose

2. 4. Pipe requirement

CAUTION

Refertotheinstallationmanualoftheoutdoorunitfordescriptionofthelengthofcon-

necting pipe or for difference of its elevation.

Model

Diameter [in (mm)]

Gas pipe Liquid pipe

12 3/8(9.52) 1/4(6.35)

18 1/2(12.70) 1/4(6.35)

24/30/36/42/48 5/8(15.88) 3/8(9.52)

• Usepipewithwater-resistantheatinsulation.

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248°F(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to80%,useheatinsulationthatis9/16in(15mm)or

thickerandiftheexpectedhumidityexceeds80%,useheatinsulationthatis13/16in

(20mm)orthicker.Ifheatinsulationisusedthatisnotasthickasspecified,condensa-

tion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68°F(20°C)).

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3. INSTALLATION WORK

WARNING

•Donotturnonthepoweruntilallinstallationworkiscomplete.

•Carryingandinstallationoftheunitshouldbeperformedbyasufcientnumberof

peopleandwithsufcientequipmentthatisadequatefortheweightoftheunit.

Performingsuchworkwithaninsufcientnumberofpeopleorwithinadequateequip-

mentcouldresultindroppingoftheunitorpersonalinjury.

CAUTION

Forinstallationdetails,refertothetechnicaldata.

3. 1. Selecting an installation location

Decidethemountingpositiontogetherwiththecustomerasfollows.

WARNING

•Selectinstallationlocationsthatcanproperlysupporttheweightoftheindoorunit

andwhichwillnotamplifysoundorvibration.Iftheinstallationlocationisnotstrong

enough,theindoorunitmayfallandcauseinjuries.

•Installtheunitssecurelysothattheydonottoppleorfall.

CAUTION

Donotinstallthe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whereisclosetoheatsources.

– 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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animalsmayurinateontheunitorammoniamaybegenerated.

•Donotusetheunitforspecialpurposes,suchasstoringfood,raisinganimals,grow-

ingplants,orpreservingprecisiondevicesorartobjects.Itcandegradethequalityof

thepreservedorstoredobjects.

•Installtheunitwheredrainagedoesnotcauseanytrouble.

•Installtheindoorunit,outdoorunit,powersupplycable,transmissioncable,and

remotecontrolcableatleast40in(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40in(1m)apart,youcouldstillreceivenoise

undersomesignalconditions.)

•Ifchildrenunder10yearsoldmayapproachtheunit,takepreventivemeasuressothat

they cannot reach the unit.

•Installtheunitwhereambienttemperaturedoesnotreach140°F(60°C)ormore.

Takeameasuresuchasventilationforanenvironmentinwhichheatisretained.

(1) The inlet and outlet ports should not be obstructed; the air should be able to blow all

over the room.

(2) Leavethespacerequiredtoservicetheairconditioner.

(3) Installtheunitwhereconnectiontotheoutdoorunitiseasy.

(4) Installtheunitwheretheconnectionpipecanbeeasilyinstalled.

(5) Installtheunitwherethedrainpipecanbeeasilyinstalled.

(6) Installtheunitwherenoiseandvibrationsarenotamplied.

(7) Takeservicing,etc.,intoconsiderationandleavethespaces.Alsoinstalltheunitwhere

theltercanberemoved.

(8) Donotinstalltheunitwhereitwillbeexposedtodirectsunlight.

Correctinitialinstallationlocationisimportantbecauseitisdifculttomoveunitafteritis

installed.

3. 2. Installation dimension

Unit: in (mm)

6(150)

or more

12(300)

or more

99(2500)ormore

(Whennoceiling)

1(20)ormore

Provide a service access for maintenance purposes.

(Bottom side) Unit: in (mm)

AIR

Controlbox

12(300)or

20(500)ormore

Serviceaccess

*Theserviceaccessnecessaryforfanunitsandltermaintenance.

(Bottom side) Unit: in (mm)

AIR

Serviceaccess

Fan unit side

12(300)ormore

20(500)ormore

4(100)ormore

4(100)

3. 3. Installing the unit

WARNING

•Installtheairconditionerinalocationwhichcanwithstandaloadofatleast3times

theweightofthemainunitandwhichwillnotamplifysoundorvibration.Iftheinstal-

lationlocationisnotstrongenough,theindoorunitmayfallandcauseinjuries.

MODEL Withstandableweight(Unitweightx3*)

AR12 198Lbs(90kg)

AR18/24/30 277Lbs(126kg)

AR36/42/48 363Lbs(165kg)

*InaccordancewithULstandards.

•Carryingandinstallationoftheunitshouldbeperformedbyasufcientnumber

ofpeopleandwithsufcientequipmentthatisadequatefortheweightoftheunit.

Performingsuchworkwithaninsufcientnumberofpeopleorwithinadequateequip-

mentcouldresultindroppingoftheunitorpersonalinjury.

•Ifthejobisdonewiththepanelframeonly,thereisariskthattheunitwillcome

loose.Pleasetakecare.

•Whenfasteningthehangers,maketheboltpositionsuniform.

9381386246-02_IM.indb 4 17-May-19 10:00:19 AM

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CAUTION

Conrmthedirectionsoftheairintakeandoutletbeforeinstallingtheunit.

3. 3. 1. Position the ceiling hole

Hanging bolt installation diagram.

Unit: in (mm)

(Top side)

29-1/2(750)

27-9/16(700)

24-13/16(630)

Model

Dimension [in (mm)]

A B

12 27-9/16(700) 29-1/8(740) 31-1/2(800)

18/24/30 39-3/8(1000) 40-15/16(1040) 43-5/16(1100)

36/42/48 55-1/8(1400) 56-11/16(1440) 59-1/16(1500)

(Right side)

2-1/4

(57)

7/8

(22)

8-9/16(218)

10-1/16(256)

8-3/4(222)

(25)

7/8

(22)

3. 3. 2. Body installation

HangingboltM10

(Locallypurchased)

SpecialnutA

(Accessory)

Washer

(Accessory)

Hanger

SpecialnutB

(Accessory)

CAUTION

FastentheunitsecurelywithspecialnutsAandBsothattheunitdoesnotfall.

3. 3. 3. Leveling

Baseverticaldirectionlevelingontheunit(rightandleft).

(Right side)

Level

AIR

Basehorizontaldirectionlevelingontopoftheunit.

Drainhose

0to3/16in

(0to5mm)

Level

Giveaslighttilttothesidetowhichthedrainhoseisconnected.Thetiltshouldbeinthe

rangeof0to3/16in(0to5mm).

3. 4. Intake duct connection

Followtheprocedureinthefollowinggure.

*18/24/30/36/42/48modelisdifferentfromthegure.

(Backside)

12model:27-9/16in(700mm)

18/24/30model:39-3/8in(1000mm)

36/42/48model:55-1/8in(1400mm)

300mm

Theairinletductcanbechangedbyreplacingtheintakegrilleandservicepanel.

Forthebottomairintake,position(1)theintakegrille,and(2)theservicepanel,asshown

inthefollowinggure.(Thefactorysettingisbackairintake.)

(2)

(1)

9381386246-02_IM.indb 5 17-May-19 10:00:21 AM

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CAUTION

•Makesurethedrainwaterisproperlydrained.

•Topreventpeoplefromtouchingthepartsinsidetheunit,besuretoinstallgrilleson

the inlet and outlet ports. The grilles must be designed in such a way that cannot be

removed without tools.

•Settheappropriateexternalstaticpressurewithinthepermissiblerange.(Referto

“6.FUNCTIONSETTING”)

•Ifanintakeductisinstalled,takecarenottodamagethetemperaturesensor(the

temperaturesensorisattachedtotheintakeportange).

•BesuretoInstalltheairinletgrilleandairoutletgrilleforaircirculation.Thecorrect

temperature cannot be detected.

Unit

AirOutletGrille

(Fieldsupply)

AirInletGrille

(Fieldsupply)

(Room)

Duct

(Fieldsupply)

•Whenconnectingtheduct,performduct-insulationappropriatefortheinstallingenvi-

ronment.

Inappropriateinsulationworkmaycausecondensationonthesurfaceoftheinsulat-

ingmaterial,andmayleadtocondensationdripping.

3. 5. Drain installation

CAUTION

•Installthedrainhoseinaccordancewiththeinstructionsinthisinstallationmanual

andkeeptheareawarmenoughtopreventcondensation.Problemswiththepiping

mayleadtowaterleaks.

•Be sure to properly insulate the drain hose so that the water will not drip from the

connected parts.

•Thepositionoftheinstalleddrainhoseshouldhaveadownwardgradientof1/100or

more.

•Donotconnectthedrainhoseinwhichammoniaorothertypesofgasaffectingthe

unitisgenerated.Heatexchangeerosionmayoccur.

Installthedrainhoseaccordingtothemeasurementsgiveninthefollowinggure.

Unit: in (mm)

11(280)

1-9/16(40)

11-13/16(300)

5-1/16(128)

2-9/16(65)

5-11/16(145)

9-1/8(232)

1-1/8(29)

Drainpipe

O.D.Ø1-1/4(32)

Drainpipe

O.D.Ø1-1/4(32)

(Right side)

3. 5. 1. Installing the drain hose

(1) Installthedrainhose(accessory)tothedrainportoftheindoorunit.Attachthehose

bandaroundthehosewithinthedimensionshown.Securermlywiththehoseband.

(2) Attachthedrainpipe(locallypurchased).Usegeneralhardpolyvinylchloridepipe

[outsidediameter1-1/16in(26.6mm)]andconnectitwithadhesive(polyvinylchloride)

sothatthereisnoleakage.

(3) Checkthedrainage.

(4) Wrapthedrainhoseinsulationaroundthedrainhoseconnection.

Unit: in (mm)

Hoseband(Accessory)

SoftPVCside

Areato

apply

adhesive

Joint pipe

(Locallypurchased)

Drainpipe[O.D.1-1/16(26.6)]

(Locallypurchased)

3/16~3/8

(5~10)

13/16(20)

Drainhose

(Accessory)

3/16(4)orless

9/16(15)

Indoorunit

Drainhose

3-15/16in

(100mm)

Drainhoseinsulation

(Accessory)

Hoseband(Accessory)

Overlap the heat insulation.

Drainhoseinsulation

(Accessory)

■

When drain pump is used

Unit: in (mm)

Gapof60to79(1,500to2,000)

27(700)orless

Horizontalor

upward gradient

Supporter

Max.

12(300)

Locallyarrangedpipe

GOOD

O.D

1-1/16(26.6)

or more

Rise

Airbleeding

PROHIBITED

Trap

Observe the following procedures to construct centralized drain pipe

ttings.

O.D1-1/2in(38mm)ormore

Downwardgradient1/100ormore

28in(700mm)orless

■

When drain pump is not used (Natural drainage)

Ifthedrainpumpisnotused,pleasemovethepositionofthedraincapandinsulation.

NOTE:

• Installthedrainpipewithdownwardgradient(1/50to1/100)andsotherearenorisesor

traps in the pipe.

9381386246-02_IM.indb 6 17-May-19 10:00:22 AM

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Drain

pipe

Outlet

airow

Arrangethedrainpipe

lower than this portion

GOOD

• Whenthepipeislong,installsupporters.

Supporter

60to79in(1.5to2m)

Trap

Rise

PROHIBITED

Airbleeding

3. 5. 2. Check for drainage

Pourabout1literofwaterfromthepositionshowninthediagramorfromtheairowoutlet

tothedewtray.Checkforanyabnormalitiessuchasstrangenoisesandwhetherthedrain

pump functions normally.

CAUTION

Makesurethedrainwaterisproperlydrained.

3. 6. Pipe installation

WARNING

•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2-wayor3-wayvalveopen.Thismaycauseabnormalpressureinthe

refrigerationcyclethatleadstobreakageandeveninjury.

•Duringthepump-downoperation,makesurethatthecompressoristurnedoffbefore

you remove the refrigerant piping.

Donotremovetheconnectionpipewhilethecompressorisinoperationwith2-way

or3-wayvalveopen.Thismaycauseabnormalpressureintherefrigerationcycle

thatleadstobreakageandeveninjury.

•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breakage,injury,etc.

•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.

CAUTION

•Bemorecarefulsothatforeignmatter(oil,water,etc.)doesnotenterthepipingthan

withrefrigerantR410Amodels.Also,whenstoringthepiping,securelysealtheopen-

ingsbypinching,taping,etc.

•Whilebrazingthepipes,besuretoblowdrynitrogengasthroughthem.

3. 6. 1. Pipe connection

■

Flaring

UsespecialpipecutterandaretooldesignedforR410Apipework.

(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anyburrs.

(3) Insertthearenut(alwaysusethearenutattachedtotheindoorunit(s)andoutdoor

unitorbranchboxrespectively)ontothepipeandperformtheareprocessingwitha

aretool.UsethespecialR410Aaretool,ortheconventionalaretool.Leakageof

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

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

entering the pipes.

Checkif[L]isareduniformly

andisnotcrackedorscratched.

Pipe

Die

Pipe outside diameter

[in (mm)]

Dimension A [in (mm)]

Dimension B

0 (0)

-0.015 (-0.4)

[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)

Whenusingconventional(R22)flaretoolstoflareR410Apipes,thedimensionAshould

beapproximately0.020in(0.5mm)morethanindicatedinthetable(forflaringwith

R410Aflaretools)toachievethespecifiedflaring.Useathicknessgaugetomeasurethe

dimensionA.ItisrecommendedthataR410Aflaringtoolisused.

Widthacross

ats

Pipe outside diameter

[in (mm)]

Width across flats 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)

■

Bending pipes

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

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

•Whenpipesarerepeatedlybend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.

CAUTION

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

curvatureof1-15/16in(50mm)orover.

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

■

Flare connection

CAUTION

•Besuretoapplythepipeagainsttheportontheindoor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indoorunitpipeuntilimmediatelybeforecon-

necting the connection pipe.

•Donotusemineraloilonaredpart.Preventmineraloilfromgettingintothesystem

as this would reduce the lifetime of the units.

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

(2) Centeringthepipeagainstportontheindoorunit,turnthearenutwithyourhand.

(3) Whenthearenutistightenedproperlybyyourhand,holdthebodysidecouplingwith

aseparatespanner,thentightenwithatorquewrench.(Seethetablebelowforthe

arenuttighteningtorques.)

9381386246-02_IM.indb 7 17-May-19 10:00:23 AM

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CAUTION

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

totightenthearenutcorrectly.

•Tighten thearenutswithatorquewrenchusingthespeciedtighteningmethod.

Otherwise,thearenutscouldbreakafteraprolongedperiod,causingrefrigerantto

leakandgenerateahazardousgasiftherefrigerantcomesintocontactwithaame.

Connectionpipe

Tightenwith2wrenches.

HoldingWrench

Flare nut

Torquewrench

Indoorunitpipe

(Bodyside)

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)

3. 7. Fresh air intake

■

Processing before use

(1) Whentakinginfreshair,cutouttheslitofthecabinetontheleftsideoftheoutercase

with nippers.

Slit

Cabinet(ironplate)

CAUTION

•Whenremovingthecabinet(ironplate),becarefulnottodamagetheindoorunit

internalpartsandsurroundingarea(outercase).

•Whenprocessingthecabinet(ironplate),becarefulnottoinjureyourselfwithburrs,

etc.

•WhenusingtheFreshairintake,settheRoomtemperaturesensorswitching(Aux.)

to“WiredRemoteController”(01),ortousetheRemotesensor.

(2) Installtheroundangetothefreshairintake.

Roundange(Locallypurchased)

(3) Connecttheducttotheroundange.

(4) Sealwithabandandvinyltape,etc.sothatairdoesnotleakfromtheconnection.

Duct

3. 8. Electrical wiring

WARNING

•ElectricalworkmustbeperformedinaccordancewiththisManualbyapersoncerti-

edunderthenationalorregionalregulations.Besuretouseadedicatedcircuitfor

the unit.

Aninsufcientpowersupplycircuitorimproperlyperformedelectricalworkcancause

seriousaccidentssuchaselectricshockorre.

•Beforestartingwork,checkthatpowerisnotbeingsuppliedtotheindoorunitand

outdoor unit.

•Usetheincludedconnectioncablesandpowercablesoronesspeciedbythemanu-

facturer.Improperconnections,insufcientinsulation,orexceedingtheallowable

currentcancauseelectricshockorre.

•Forwiring,usetheprescribedtypeofcables,connectthemsecurely,makingsure

thattherearenoexternalforcesofthecablesappliedtotheterminalconnections.Im-

properly connected or secured cables can cause serious accidents such as overheat-

ingtheterminals,electricshock,orre.

•Donotmodifythepowercables,useextensioncables,oruseanybranchesinthe

wiring.Improperconnections,insufcientinsulation,orexceedingtheallowablecur-

rentcancauseelectricshockorre.

•Match the terminal board numbers and connection cable colors with those of the

outdoorunit.Erroneouswiringmaycauseburningoftheelectricparts.

•Securelyconnecttheconnectioncablestotheterminalboard.Inaddition,securethe

cableswithwiringholders.Improperconnections,eitherinthewiringorattheendsof

thewiring,cancauseamalfunction,electricshock,orre.

•Alwaysfastentheoutsidecoveringoftheconnectioncablewiththecableclamp.(If

theinsulatorischafed,electricleakagemayoccur.)

•Securelyinstalltheelectricalboxcoverontheunit.Animproperlyinstalledelectrical

boxcovercancauseseriousaccidentssuchaselectricshockorrethroughexpo-

sure to dust or water.

•Installsleevesintoanyholesmadeinthewallsforwiring.Otherwise,ashortcircuit

could result.

•Installagroundleakagebreaker.Inaddition,installthegroundleakagebreakerso

that the entire ACmainpowersupplyiscutoffatthesametime.Otherwise,electric

shockorrecouldresult.

•Alwaysconnecttheearth(ground)cable.

Improperearthing(grounding)workcancauseelectricshocks.

•Installtheremote control cables so as not to be touched directly with your hand.

•Perform wiring workinaccordancewithstandardssothattheairconditionercanbe

operated safely and positively.

•Connecttheconnectioncablermlytotheterminalboard.Imperfectinstallationmay

causeare.

CAUTION

•Groundtheunit.

Donotconnecttheearth(ground)cabletoagaspipe,waterpipe,lightningrod,ora

telephoneearth(ground)cable.

Improperearthing(grounding)maycauseelectricshocks.

•Donotconnectpowersupplycablestothetransmissionorremotecontrolterminals,

as this will damage the product.

•Neverbundlethepowersupplycableandtransmissioncabletogether.Bundling

these cables together will cause miss operation.

•WhenhandlingPCB,staticelectricitychargedinthebodymaycausemalfunctionof

thePCB.Followthecautionsbelow:

– Establishagroundfortheindoorandoutdoorunitsandperipheraldevices.

– Cutpower(breaker)off.

– Touchmetalpartoftheindoorandoutdoorunitsformorethan10secondstodis-

charge static electricity charged in the body.

– DonottouchterminalsofpartsandpatternsimplementedonPCB.

3. 8. 1. Wiring system diagram

■

Connection cable (to outdoor unit)

Earth(ground)line

Power line

Controlline

Indoorunit

Outdoor unit

Disconnectswitch

(Locallypurchased)

NOTES:DisconnectSwitch-Fieldsuppliedifrequiredbylocalcode.Selectthecorrect

capacity of disconnect switch according to the load.

■

Wired remote controller cable

Red

White

2-wire type

9381386246-02_IM.indb 8 17-May-19 10:00:24 AM

En-9

3. 8. 2. Connection cable preparation

■

Connection cable

Earth(ground)

wire

Conduitconnector

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

■

Remote controller cable

For 2-wire type

1-3/16in(30mm)

3. 8. 3. How to connect wiring to the terminals.

(1) Useringterminalswithinsulatingsleevesasshowninthegurebelowtoconnectto

theterminalblock.

(2) Securelycrimptheringterminalstothewiresusinganappropriatetoolsothatthe

wires do not come loose.

Strip3/8in(10mm)

Ringterminal

Sleeve

(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.

WARNING

Usering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.

Tightening torque [lbf·in (N·m)]

M4screw 11to16(1.2to1.8)

Screwwith

special washer

Ring

terminal

Terminalblocks

Wire

Screwwith

special

washer

Ring

terminal

3. 8. 4. Connection wiring

CAUTION

•Becarefulnottomistakethepowersupplycableandconnectionwireswheninstall-

ing.

•Installsothatthewiresfortheremotecontrollerwillnotcomeincontactwithother

connection wires.

(1) Removethecontrolboxcoverandinstalleachconnectionwire.

Controlboxcover

Loosenthescrews.(3locations)

Conduitconnector

(Locallypurchased)

Locknut

(Locallypurchased)

Attachtheconduitconnectoronthewiringconnectingport.

(Thegrommetedgingandtheconnectioncableclampare

notused.)

■

Connection cable

Controlline

Conduit

connector

Power line

Outdoor

unit

Earth(ground)

■

Remote controller cable

2-wire type

White

Red

Remote

controller

cable

Remotecontroller

*Earth(Ground)theremotecontrollerifithasaearth(ground)wire.

(2) Afterwiringiscomplete,securetheremotecontrollercableandconnectioncable

with the wire clamper or cable tie.

Connectioncable

(tooutdoorunit)

Remotecontrollercable

Cabletie(medium)

(Accessory)

Controlbox

Wireclamper

(3) Sealthecableoutletorothergapswithputtytopreventdewcondensationorinsect

fromenteringtheelectriccontrolbox.

(4) Replacethecontrolboxcover.

CAUTION

•Donotbundletheremotecontrollercable,orwiretheremotecontrollercableinpar-

allel,withtheindoorunitconnectionwire(totheoutdoorunit)andthepowersupply

cable.Itmaycauseerroneousoperation.

•Tightentheindoorunitconnectionwireandpowersupplyindoorandoutdoorunit,

terminalboardconnectionsrmlywiththeterminalboardscrews.Faultyconnection

maycauseare.

•Connecttheindoorunitconnectionwirebymatchingthenumbersoftheoutdoorand

indoor units terminal board numbers as shown in terminal label.

•Besuretorefertotheconnectiondiagramforthecorrecteldwiring.Wrongwiring

causes malfunction of the unit.

(5) Fixtheconduitwiththesupportersasshownbelow.

Conduit(Powersupplycable)

Indoorunit

Supporter

30in

(756mm)

or less

54in

(1,361mm)

or less

54in

(1,361mm)

or less

54in

(1,361mm)

or less

3. 9. Remote controller installation

Toinstallandsettheremotecontroller,refertotheinstallationmanualoftheremote

controller(wiredtype).

9381386246-02_IM.indb 9 17-May-19 10:00:25 AM

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4. OPTIONAL INSTALLATION WORK

4. 1. Optional kit installation

WARNING

Regulationofcablediffersfromeachlocality,referinaccordancewithlocalrules.

Y1 Y2 Y3 12Y1 Y2 Y3 12

Terminal

(Externalin)

CN8(Remotesensor)

CN48

(IRreceiver)

CN65

(Externalin/outPCB)

CN47

(Externalout)

Thisairconditionercanbeconnectedwiththefollowingoptionalkits.

Fordetailsonhowtoinstalloptionalparts,refertotheinstallationmanualincludedineach

item.

ConnectorNo. Option type

CN48 IRreceiver(UTY-LBTUM)

CN8 Remotesensor(UTY-XSZX)

CN47*1 Connectwire(UTY-XWZXZG)

CN65*2 ExternalinputandoutputPCB(UTY-XCSX)

*1:

Forexternaloutputterminalsetting,refertoFunctionNo.60in“6.FUNCTIONSETTING”.

*2:Otheroptions(WLANadapter,converters,etc.)maybeavailablebyusingtheoptional

ExternalinputandoutputPCB.

4. 2. External input and output

4. 2. 1. External input

• IndoorunitfunctionssuchasOperation/StoporForcedstopcanbe

done by using indoor unit terminals.

• “Operation/Stop”modeor“Forcedstop”modecanbeselectedwith

function setting of indoor unit.

•

Atwistedpaircable(22AWG)shouldbeused.Maximumlengthof

cableis492ft.(150m).

• Useanexternalinputandoutputcablewithappropriateexternal

dimension,dependingonthenumberofcablestobeinstalled.

• Thewireconnectionshouldbeseparatefromthepowercableline.

● Dry contact terminal

Whenapowersupplyisunnecessaryattheinputdeviceyouwanttoconnect,usetheDry

contact terminal.

PCB

Terminal

(Externalin)

Connecteddevice

*1:Theswitchcanbeusedonthefollowingcondition:DC12Vto24V,1mAto15mA.

■

Operation behavior

● Input signal type

Edge

OFF

When function setting is “Operation/Stop” mode 1.

Input signal Command

OFF→ON Operation

ON→OFF Stop

When function setting is “Forced stop” mode.

Input signal Command

OFF→ON Forced stop

ON→OFF Normal

* Whentheforcedstopistriggered,indoorunitstopsandOperation/Stopoperationbya

remote controller is restricted.

Connecteddevice

Terminal

When function setting is "Operation/Stop" mode 2.

Input signal Command

OFF→ON Operation

ON→OFF Stop(R.C.disabled)

4. 2. 2. External output

• Atwistedpaircable(22AWG)shouldbeused.Maximumlengthofcableis82ft.(25m).

• Useanexternalinputandoutputcablewithappropriateexternaldimension,depending

on the number of cables to be installed.

• Outputvoltage:HiDC12V±2V,Lo0V.

• Permissiblecurrent:50mA

■

Output select

● When interlocking with external device

CN47

PCB

Connected

device

Relay(locallypurchased)

● When displaying "Operation/Stop"

CN47

PCB

Connecteddevice

Resistor

LED

■

Operation behavior

*Iffunctionsetting"60"issetto"00"

Function setting

Status Output voltage

Stop 0V

Operation DC12V

01-05

OFF 0V

ON DC12V

Stop 0V

Operation DC12V

07-08

OFF 0V

ON DC12V

Normal 0V

Error DC12V

Indoorunitfanstop 0V

Indoorunitfanoperation DC12V

ExternalheaterOFF 0V

ExternalheaterON DC12V

4. 2. 3. Connection methods

■

Wire modication

• Removeinsulationfromwireattachedtowirekitconnector.

• Removeinsulationfromlocallypurchasedcable.Usecrimptypeinsulatedbutt

connectortojoineldcableandwirekitwire.

• Connectthewirewithconnectingwirewithsolder.

IMPORTANT: Be sure to insulate the connection between the wires.

Locallypurchased

Option parts

Externaloutputwire

Solderandinsulatetheconnectedparts.

•Connectingwirestotheterminals.

Useringterminalswithinsulatingsleevestoconnecttotheterminalblock.

•Connectionterminalsandwiringarrangement

Infollowinggure,allthepossibleconnectionsaredonefordescription.

Inactualinstallation,connectionswilldifferaccordingtoeachinstallationrequirements.

9381386246-02_IM.indb 10 17-May-19 10:00:26 AM

En-11

4. 3. Remote sensor

Remote sensor

•Removetheexistingconnectorandreplaceitwiththeremotesensorconnector(ensure

thatthecorrectconnectorisused).

•The original connector should be insulated to ensure that it does not come into contact

with other electrical circuitry.

Settingforroomtemperaturecorrection

Whenaremotesensorisconnected,setthefunctionsettingofindoorunitasindicated

below.

•SetFunctionNumber“30”(Roomtemperaturecontrolforcooling)to“00”

•SetFunctionNumber“31”(Roomtemperaturecontrolforheating)to“01”

5. REMOTE CONTROL INSTALLATION

CAUTION

•Besuretoturnofftheelectricalbreakerbeforemakingsettings.

•WhensettingDIPswitches,donottouchanyotherpartsonthecircuitboarddirectly

with your bare hands.

•UseaninsulatedscrewdrivertosettheDIPswitches.

5. 1. Group control

CAUTION

Groupcontrolisonlypossiblebetweenunitswithremotecontrollersofthesametype.

Toconrmthetypeofremotecontroller,seethebackoftheremotecontrolleror

“2.6.Optionalparts”.

Anumberofindoorunitscanbeoperatedatthesametimeusingasingleremotecontroller.

(1) Connectupto16indoorunitsinasystem.(indoorunittoremotecontroller)

BCDE

I.U. I.U. I.U. I.U.

Remote

controller

A,B,C,D,E:Remotecontrollercable.(Referto“2.5.Electricalrequirement”)

A+B+C+D+E≤1640ft(500m)

1 2 3 1 2 3 1 2 3 1 2 3

1 2 3

Indoorunit1 Indoorunit2 Indoorunit3 Indoorunit4

Remotecontroller

cable

Remotecontroller

cable

Remotecontroller

RWB

(2) SettheR.C.address(DIPswitchsetting)

 SettheR.C.addressofeachindoorunitusingtheDIPswitchontheindoorunit

circuit board.

SW100

●2-wiretype

DIPswitch(RCADSW)...Factorysetting“00”

Sincetheremotecontrolleraddresssettingsareautomaticallycongured,youdonot

needtocongurethem.

Ifconguringmanually,itisnecessarytocongureboththeindoorunitandtheremote

controller.Fordetails,pleaserefertotheremotecontrollerinstallationmanual.

Setting Setting range Switch 100

Remotecontroller

address

00to15

Setting

example00

1234

RCAD

Example

If4indoorunitsareconnected.

RC AD SW

Indoorunit1

Remote

controller

Indoorunit2 Indoorunit3 Indoorunit4

Set the R.C. address in accordance with the table below.

Indoor unit

R.C. address

DIP SWITCH No.

1 2 3 4

1 00 OFF OFF OFF OFF

2 01 ON OFF OFF OFF

3 02 OFF ON OFF OFF

4 03 ON ON OFF OFF

5 04 OFF OFF ON OFF

6 05 ON OFF ON OFF

7 06 OFF ON ON OFF

8 07 ON ON ON OFF

9 08 OFF OFF OFF ON

10 09 ON OFF OFF ON

11 10 OFF ON OFF ON

12 11 ON ON OFF ON

13 12 OFF OFF ON ON

14 13 ON OFF ON ON

15 14 OFF ON ON ON

16 15 ON ON ON ON

NOTE:

BesuretosetconsecutiveR.C.address.

Theindoorunitscannotbeoperatedifanumberisskipped.

5. 2. Multiple remote control

Upto2remotecontrollerscanbeusedtooperateoneindoorunit

CAUTION

Multipleinstallationmethoddescribedaboveisprohibitedtocombine3Wiredtypewith

2WiredType.

I.U.

Primary Primary Secondary

A,B:Remotecontrollercable.(Referto“2.5.Electricalrequirement”)

A≤1640ft(500m),A+B≤1640ft(500m)

5. 3. DIP switch 101 setting

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Fan delay setting

Thissettingcanbeusedwhentheauxiliaryheaterismounted.

Whentheoperationisstoppedwhentheindoorunitisoperatingwithanauxiliaryheater,

theoperationcontinues1minutes.

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Drainage function setting

Ifcontaineddrainpumpisnotused,setthedrainagefunctionto“Disable”inthedrainage

function switching.

ChangethefollowingsettingsbyusingtheDIPswitch.

SW101

(♦...Factorysetting)

DIP switch 101

DIP SW state

Details

OFF

Disable

Enable♦

Drainagefunctionsetting

Cannotbeused(DonotChange)

Enable

Disable♦

Fan delay setting

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6. FUNCTION SETTING

Tochangethefunctionsettings,refertotheproceduresdescribedintheinstallation

manualoftheremotecontroller(wiredtype).

The function settings are as follows.

6. 1. Function details

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Filter sign

Selectappropriateintervalsfordisplayingtheltersignontheindoorunitaccordingtothe

estimated amount of dust in the air of the room.

Iftheindicationisnotrequired,select"Noindication"(03).

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Standard(2500hours)

01 Longinterval(4400hours)

02 Shortinterval(1250hours)

03 Noindication ♦

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Room temperature control for indoor unit sensor

Dependingontheinstalledenvironment,correctionoftheroomtemperaturesensormay

berequired.

Selecttheappropriatecontrolsettingaccordingtotheinstalledenvironment.

Thetemperature correctionvaluesshow thedifferencefromtheStandard setting“00”

(manufacturer’srecommendedvalue).

(♦...Factorysetting)

Function Number

Setting

Value

Setting Description

(Forcooling)

(Forheating)

00 Standardsetting ♦

01 Nocorrection0°F(0.0°C)

02 -1°F(-0.5°C)

Cooling

Less

Heating

03 -2°F(-1.0°C)

04 -3°F(-1.5°C)

05 -4°F(-2.0°C)

06 -5°F(-2.5°C)

07 -6°F(-3.0°C)

08 -7°F(-3.5°C)

09 -8°F(-4.0°C)

10 +1°F(+0.5°C)

Less

Cooling

Heating

11 +2°F(+1.0°C)

12 +3°F(+1.5°C)

13 +4°F(+2.0°C)

14 +5°F(+2.5°C)

15 +6°F(+3.0°C)

16 +7°F(+3.5°C)

17 +8°F(+4.0°C)

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Room temperature control for wired remote controller sensor

Dependingontheinstalledenvironment,correctionofthewireremotetemperaturesensor

mayberequired.

Selecttheappropriatecontrolsettingaccordingtotheinstalledenvironment.

Tochangethissetting,setFunction42toBoth“01”.

EnsurethattheThermoSensoriconisdisplayedontheremotecontrollerscreen.

(♦...Factorysetting)

Function number

Setting

value

Setting description

(Forcooling)

(Forheating)

00 Nocorrection ♦

01 Nocorrection0°F(0.0°C)

02 -1°F(-0.5°C)

Cooling

Less

Heating

03 -2°F(-1.0°C)

04 -3°F(-1.5°C)

05 -4°F(-2.0°C)

06 -5°F(-2.5°C)

07 -6°F(-3.0°C)

08 -7°F(-3.5°C)

09 -8°F(-4.0°C)

10 +1°F(+0.5°C)

Less

Cooling

Heating

11 +2°F(+1.0°C)

12 +3°F(+1.5°C)

13 +4°F(+2.0°C)

14 +5°F(+2.5°C)

15 +6°F(+3.0°C)

16 +7°F(+3.5°C)

17 +8°F(+4.0°C)

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Auto restart

Enableordisableautomaticrestartafterapowerinterruption.

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Enable ♦

01 Disable

*Autorestartisanemergencyfunctionsuchasforpoweroutageetc.Donotattemptto

use this function in normal operation. Be sure to operate the unit by remote controller or

externaldevice.

■

Room temperature sensor switching

(Onlyforwirelessremotecontroller)

WhenusingtheWiredremotecontrollertemperaturesensor,changethesettingto"Both"

(01).

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Indoorunit ♦

01 Both

00:Sensorontheindoorunitisactive.

01: Sensorsonbothindoorunitandwiredremotecontrollerareactive.

Remotecontrollersensormustbeturnedonbyusingtheremotecontroller

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Cold air prevention

*Thissettingistodisablethecoldairpreventionfunctionduringheatingoperation.When

disabled,thefansettingwillalwaysfollowthesettingontheremotecontroller.(Excluding

defrostmode).

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Enable ♦

01 Disable

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External input control

"Operation/Stop"modeor"Forcedstop"modecanbeselected.

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Operation/Stopmode1

♦

01 (Settingprohibited)

02 Forced stop mode

03 Operation/Stopmode2

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Room temperature sensor switching (Aux.)

Tousethetemperaturesensoronthewiredremotecontrolleronly,changethesettingto

"Wiredremotecontroller"(01).Thisfunctionwillonlyworkifthefunctionsetting42isset

at"Both"(01)

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

00 Both ♦

01 Wiredremotecontroller

■

Indoor unit fan control for energy saving for cooling

Enablesor disables thepower-savingfunctionby controlling the indoorunitfan rotation

when the outdoor unit is stopped during cooling operation.

(♦...Factorysetting)

Function

Number

Setting

Value

Setting description

00 Disable ♦

01 Enable

02 Remotecontroller

00:Whentheoutdoorunitisstopped,theindoorunitfanoperatescontinuouslyfollowing

the setting on the remote controller.

01:Whentheoutdoorunitisstopped,theindoorunitfanoperatesintermittentlyatavery

low speed.

02:Enableordisablethisfunctionbyremotecontrollersetting.

*WhenusingawiredremotecontrollerwithoutIndoorunitfancontrolforenergysavingfor

coolingfunction,orwhenconnectingasinglesplitconverter,thesettingcannotbemade

byusingtheremotecontroller.Setto"00"or"01".

 Toconrmiftheremotecontrollerhasthisfunction,refertotheoperatingmanualofeach

remote controller.

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■

Switching functions for external output terminal

Functionsoftheexternaloutputterminalcanbeswitched.

(♦...Factorysetting)

Function Number

Setting

Value

Setting Description

00 Operation status ♦

01to08

Other status

(RefertotheDesign&technicalmanual.)

09 Errorstatus

10 Fresh air control

11 Auxiliaryheater

■

Setting record

• Recordanychangestothesettingsinthefollowingtable.

Function setting

Setting Value

Filter sign

Staticpressure

Roomtemperaturecontrolforindoorunitsensor

cooling

heating

Roomtemperaturecontrolforwiredremote

controller sensor

cooling

heating

Autorestart

Roomtemperaturesensorswitching

Coldairprevention

Externalinputcontrol

Roomtemperaturesensorswitching(Aux.)

Indoorunitfancontrolforenergysavingforcooling

Switchingfunctionsforexternaloutputterminal

AftercompletingtheFunctionSetting,besuretoturnoffthepowerandturnitonagain.

6. 2. Static pressure

Thestaticpressurecanbesetbythefollowing2methods.Chooseaccordingly.

a. Manual setting (Function setting)

Selecttheappropriatestaticpressureaccordingtotheinstallationconditions.

(♦...Factorysetting)

Function

Number

Setting

Value

Setting Description

03 0.12in.WG(30Pa)

04 0.16in.WG(40Pa)

05 0.20in.WG(50Pa)

06 0.24in.WG(60Pa)

07 0.28in.WG(70Pa)

08 0.32in.WG(80Pa)

09 0.36in.WG(90Pa)

10 0.40in.WG(100Pa)

11 0.44in.WG(110Pa)

12 0.48in.WG(120Pa)

13 0.52in.WG(130Pa)

14 0.56in.WG(140Pa)

15 0.60in.WG(150Pa)

16 0.64in.WG(160Pa)

17 0.68in.WG(170Pa)

18 0.72in.WG(180Pa)

19 0.76in.WG(190Pa)

20 0.80in.WG(200Pa)

Standard0.18in.WG(45Pa):12/18/24model

0.23in.WG(57Pa):30/36/42model

0.28in.WG(70Pa):48model

♦

32 Automaticairowadjustment

* The range of static pressure is different by model.

 Fordetails,seetheFanperformancecurveofthetechnicaldata.

Model name Rangeofstaticpressure

12/18/24/30/36model 0.12to0.8in.WG(30to200Pa)

42/48model

0.12to0.72in.WG(30to180Pa)

RecordthesettingvalueofFunction26intheSettingrecordtablein“6.1.Functionde-

tails”.

b. Automatic airow adjustment

CAUTION

•This function cannot be used when there is a booster fan between the ducts.

•Be surethatthestaticpressureiswithintheallowedrange.Incorrectsettingmay

cause incorrect adjustmentandmayresultininsufcientairoworwaterleakage.

•Whentheexternalstaticpressureischangeableintheinstallationbyuseofauto-

matic changeable dampers,etc.,setsothattheexternalstaticpressureisthelowest.

NOTE:

Besuretoconductthissettingbeforeanyotheroperation.Ifthemotoriswarmortheheat

exchangeriswet,falsedetectionmayleadtoincorrectadjustments.

Checkiftheelectricalwiringsandductinstallationsarecomplete.

Ifthereisadamperinstalledinthesystem,makesurethedamperisopen.

Checkiftheairlter(optional)isattached.

Ifthereareseveralinlet,outletports,makesuretheairowratesofeachportmatchthe

designedairowratebyadjustingthethrottles.

Automaticairowadjustmentispossiblebythefollowingprocedures.

1) ChangethesettingofFunction26to"Automaticairowadjustment"(32).

2) RuntheairconditioneronFanmode(High).

*Forinstructionsonhowtooperatetheairconditioner,refertotheoperationmanual

of the remote controller.

 DuringAutomaticairowadjustment,themodewillbexedatFanmode(High).

 Whenthisfunctionisactive,donotoperatetheOutdoorunit.

3) Theairconditionerwillrunforabout1to8min.thenstopautomatically.

*Donotchangethethrottlesoftheinletandoutletportsduringoperation.

 WhenusedinaGroupcontrolsystem,thesettingwilltakeabout10min.

4) Turntheairconditioneroffandonagain.

5) CheckthesettingvalueofFunction26andrecordtheobtainedsettingvalueinthe

following table.

 *Ifthesettingvaluehasnotchanged,repeattheprocedurefromstep1.

Function Number Setting value

CAUTION

•Ifthedetectedsettingvalueisnotwithintherangeofstaticpressure,pleasecheck

andre-arrangetheinstallation,thenrepeattheprocedurefromstep1.Incorrectset-

tingmayresultininsufcientairoworwaterleakage.

•WhentheductoroutletinstallationsarechangedaftertheAutomaticairowadjust-

ment is completed,repeattheprocedurefromstep1.

7. CHECK LIST

Payspecialattentiontothecheckitemsbelowwheninstallingtheindoorunit(s).After

installationiscomplete,besuretocheckthefollowingcheckitemsagain.

Check items Check box

Has the indoor unit been installed correctly?

Hastherebeenacheckforgasleaks(refrigerantpipes)?

Hasheatinsulationworkbeencompleted?

Doeswaterdraineasilyfromtheindoorunits?

Isthevoltageofthepowersourcethesameasthatindicatedonthelabel

on the indoor unit?

Arethewiresandpipesallconnectedcompletely?

Istheindoorunitgrounded?

Istheconnectioncablethespeciedthickness?

Aretheinletsandoutletsfreeofanyobstacles?

Afterinstallationiscompleted,hastheproperoperationandhandling

beenexplainedtotheuser?

Operatetheunitaccordingtotheoperatingmanualprovided,andcheck

that it is operating normally.

8. TEST RUN

8. 1. Check items

□Isoperationofeachbuttonontheremotecontrolunitnormal?

□Doeseachlamplightnormally?

□Isthedrainnormal?

□Donothaveanabnormalnoiseandvibrationduringoperation?

Donotoperatetheairconditionerintestrunforalongtime.

9381386246-02_IM.indb 13 17-May-19 10:00:28 AM

En-14

8. 2. Operation method

Dependingonyourinstallation,choosefromthefollowing:

■

By the wireless remote controller (with [TEST RUN] button)

• Tostarttestrun,pressthe[START/STOP]buttonandthe[TESTRUN]buttononthe

remote controller.

• Toendtestrun,presstheremotecontroller[START/STOP]button.

■

By the IR receiver unit

• Tostarttestrun,pressthe[MANUALAUTO]buttonoftheIRreceiverformorethan10

seconds(forcedcooling).

• Toendtestrun,pressthe[MANUALAUTO]buttonformorethan3secondsorpress

theremotecontroller[START/STOP]button.

• TheOperationindicatorlampandTimerindicatorlampwillsimultaneouslyashduring

the test run mode.

■

By the wired remote controller

• Fortheoperationmethod,refertotheinstallationmanualandtheoperatingmanualof

the wired remote controller.

HeatingtestrunwillbegininafewminuteswhenHEATisselectedbytheremotecontroller

[reversecyclemodelonly].

9. FINISHING

Installtheheatinsulationmaterialafterperformingarefrigerantleakcheck(seethe

installation manual for the outdoorunitfordetails).

Coupler heat insulation

Nogaps

Indoorunitside

Cableties(large)

(Accessory)

Pipes

(Gasandliquidpipes)

Couplerheatinsulation

(Accessory)

Be sure to overlap

the insulation.

CAUTION

There should be no gaps between the insulation and the product.

CAUTION

•Afterconnectingthepiping,checkthealljointsforgasleakagewithgasleakdetector.

•Oncethepressurecheckinghasbeencompletedusingnitrogen,pleaserefertothe

outdoor unit installation manual to complete the evacuation process.

•Installheatinsulationaroundboththelarge(gas)andsmall(liquid)pipes.Failureto

dosomaycausewaterleaks.

10. CUSTOMER GUIDANCE

Explainthefollowingtothecustomerinaccordancewiththeoperatingmanual:

(1) Startingandstoppingmethod,operationswitching,temperatureadjustment,timer,and

other remote controller operations.

(2) Cleaningandmaintenanceoftheproduct,andotheritemssuchasairltersandair

louvers if applicable.

(3) Givetheoperatingandinstallationmanualstothecustomer.

(4) Iftheindoorunitcustomcodeischanged,andtheinstallationincludesawireless

remotecontroller,informthecustomerthechangedcode.(Onsomewirelessremote

controllers,thecustomcodemayreturntoAwhenbatteriesarereplaced.)

11. ERROR CODES

Ifyouuseawiredtyperemotecontroller,errorcodeswillappearontheremotecontrol-

lerdisplay.Ifyouuseawirelessremotecontroller,thelampsontheIRreceiverunitwill

outputerrorcodesbywayofblinkingpatterns.Seethelampblinkingpatternsanderror

codesinthetablebelow.Anerrordisplayisdisplayedonlyduringoperation.

Formoredetails,refertotheinstallationmanualoftheremotecontroller.

Error display

Wired

remote

controller

Error code

Description

OPERATION

lamp (green)

TIMER

lamp

(orange)

ECONOMY

lamp

(green)



(1)



(1)

Serialcommunicationerror



(1)



(2)

Wiredremotecontroller

communication error



(1)



(5)

Checkrununnished

Automaticairowadjustmenterror



(1)



(6)

PeripheralunittransmissionPCB

connection error



(1)



(8)

Externalcommunicationerror



(2)



(1)

UnitnumberorRefrigerantcircuit

address setting error

[SimultaneousMulti]



(2)



(2)

Indoorunitcapacityerror



(2)



(3)

Combinationerror



(2)



(4)

•Connectionunitnumber

error(indoorsecondaryunit)

[SimultaneousMulti]

•Connectionunitnumbererror

(indoorunitorbranchunit)

[FlexibleMulti]



(2)



(6)

Indoorunitaddresssettingerror



(2)



(7)

Primaryunit,secondaryunitsetup

error[SimultaneousMulti]



(2)



(9)

Connectionunitnumbererrorin

wired remote controller system



(3)



(1)

Power supply interruption error



(3)



(2)

IndoorunitPCBmodel

information error



(3)



(3)

Indoorunitmotorelectricity

consumption detection error



(3)



(5)

Manual auto switch error



(3)



(9)

Indoorunitpowersupplyerrorfor

fan motor



(3)



(10)

Indoorunitcommunicationcircuit

(wiredremotecontroller)error



(4)



(1)

Roomtemp.sensorerror



(4)



(2)

Indoorunitheatex.middletemp.

sensor error



(4)



(4)

Human sensor error



(5)



(1)

Indoorunitfanmotorerror

9381386246-02_IM.indb 14 17-May-19 10:00:31 AM

En-15

Error display

Wired

remote

controller

Error code

Description

OPERATION

lamp (green)

TIMER

lamp

(orange)

ECONOMY

lamp

(green)



(5)



(3)

Drainpumperror



(5)



(4)

ElectricaircleanerreverseVDD

error



(5)



(5)

Filter set error



(5)



(7)

Dampererror



(5)



(8)

Intakegrilleerror



(5)



(9)

Indoorunitfanmotor2error

(Leftsidefan)



(5)



(10)

Indoorunitfanmotor3error

(Rightsidefan)



(5)



(15)

Indooruniterror



(6)



(1)

Outdoorunitreverse/missing

phase and wiring error



(6)



(2)

OutdoorunitmainPCB

model information error or

communication error



(6)



(3)

Invertererror



(6)



(4)

Activeltererror,PFCcircuiterror



(6)



(5)

TripterminalLerror



(6)



(8)

Outdoor unit rush current limiting

resister temp. rise error



(6)



(10)

DisplayPCBmicrocomputers

communication error



(7)



(1)

Dischargetemp.sensorerror



(7)



(2)

Compressortemp.sensorerror



(7)



(3)

OutdoorunitHeatEx.liquidtemp.

sensor error



(7)



(4)

Outdoor temp. sensor error



(7)



(5)

SuctionGastemp.sensorerror



(7)



(6)

•2-wayvalvetemp.sensorerror

•3-wayvalvetemp.sensorerror



(7)



(7)

Heatsinktemp.sensorerror



(8)



(2)

•Sub-coolHeatEx.gasinlet

temp. sensor error

•Sub-coolHeatEx.gasoutlet

temp. sensor error



(8)



(3)

Liquidpipetemp.sensorerror



(8)



(4)

Currentsensorerror

Error display

Wired

remote

controller

Error code

Description

OPERATION

lamp (green)

TIMER

lamp

(orange)

ECONOMY

lamp

(green)



(8)



(6)

•Dischargepressuresensorerror

•Suctionpressuresensorerror

•High pressure switch error



(9)



(4)

Trip detection



(9)



(5)

Compressorrotorposition

detectionerror(permanentstop)



(9)



(7)

Outdoorunitfanmotor1error



(9)



(8)

Outdoorunitfanmotor2error



(9)



(9)

4-wayvalveerror



(9)



(10)

Coil(expansionvalve)error



(10)



(1)

Dischargetemp.error



(10)



(3)

Compressortemp.error



(10)



(4)

High pressure error



(10)



(5)

Lowpressureerror



(13)



(2)

Branchboxeserror

[FlexibleMulti]

Displaymode



:0.5sON/0.5sOFF

:0.1sON/0.1sOFF

() :Numberofashing

9381386246-02_IM.indb 15 17-May-19 10:00:36 AM

Fujitsu ARU24RGLX Installation guide

Brand: Fujitsu

Model: ARU24RGLX

Type: Installation guide

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Fujitsu ARU24RGLX Installation guide

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