Hitachi RAK-25PSPA Installation guide

Brand: Hitachi

Model: RAK-25PSPA

Category: Split-system air conditioners

Type: Installation guide

This manual is also suitable for

s 0LEASEREQUESTYOURSALESAGENTORQUALIlEDTECHNICIANTOINSTALLYOURUNIT7ATERLEAKAGESHORTCIRCUITORlREMAYOCCURIFYOUDOTHE

INSTALLATIONWORKYOURSELF

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WATERLEAKAGEELECTRICSHOCKANDlRE

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COLLAPSEANDIMPOSEDANGER

s /BSERVETHERULESANDREGULATIONSOFTHEELECTRICALINSTALLATIONANDTHEMETHODSDESCRIBEDINTHEINSTALLATIONMANUALWHENDEALING

WITHTHEELECTRICALWORK5SECABLESWHICHAREAPPROVEDOFlCIALINYOURCOUNTRY"ESURETOUSETHESPECIlEDCIRCUIT!SHORTCIRCUITAND

lREMAYOCCURDUETOTHEUSEOFLOWQUALITYWIREORIMPROPERWORK

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CONDUCTORSOFTHEWIREAREINSERTEDINTOTHETERMINALSTOPREVENTTHEEXTERNALFORCEISBEINGAPPLIEDTOTHECONNECTIONSECTIONOFTHE

TERMINALBASE)MPROPERINSERTIONANDLOOSECONTACTMAYCAUSEOVERHEATINGANDlRE

s 0LEASEUSETHESPECIlEDCOMPONENTSFORINSTALLATIONWORK/THERWISETHEUNITMAYCOLLAPSEORWATERLEAKAGEELECTRICSHOCKlREOR

STRONGERVIBRATIONMAYOCCUR

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DOESNOTENTERTHEREFRIGERATIONCYCLE)FOTHERAIRSHOULDENTERTHEPRESSURELEVELOFTHEREFRIGERATIONCYCLEMAYINCREASEABNORMALLY

WHICHCOULDRESULTINARUPTUREANDINJURY

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OCCUR

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ROOMCOMINGINTOCONTACTWITHlREINTHEFANDRIVENHEATERSPACEHEATERETCAPOISONOUSGASMAYOCCUR

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TECHNICIANORELECTRICIAN)MPROPERREPAIRSMAYRESULTINWATERLEAKAGEELECTRICSHOCKANDlREETC

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THEOUTDOORANDINDOORUNIT$ONOTCONNECTTHEEARTHLINETOTHEGASTUBEWATERPIPELIGHTINGRODORTHEEARTHLINEOFTHE

TELEPHONEUNIT)MPROPEREARTHINGMAYCAUSEELECTRICSHOCKS

s 7HENlNISHINGTHEREFRIGERANTCOLLECTIONPUMPINGDOWNSTOPTHECOMPRESSORANDTHENREMOVETHECOOLANTPIPE

)FYOUREMOVETHEREFRIGERANTPIPEWHILETHECOMPRESSORISOPERATINGANDTHESERVICEVALVEISRELEASEDAIRISSUCKEDANDA

PRESSUREINTHEFREEZINGCYCLESYSTEMWILLBUILDUPSTEEPLYCAUSINGANEXPLOSIONORINJURY

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)FTHEREFRIGERANTPIPEISNOTINSTALLEDANDTHECOMPRESSORISOPERATEDWITHTHESERVICEVALVERELEASEDAIRISSUCKEDANDTHE

PRESSURELEVELOFTHEREFRIGERATIONCYCLEMAYINCREASEABNORMALLYWHICHCOULDRESULTINARUPTUREANDINJURY

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)NCASEOFOTHERINSTALLATIONSA MAINSWITCHWITH ACONTACTGAPORMORE THANMMHASTOBEINSTALLED7ITHOUTACIRCUIT BREAKER THE

DANGEROFELECTRICSHOCKEXISTS

s



$ONOTINSTALLTHEUNITNEARALOCATIONWHERETHEREISmAMMABLEGAS4HEOUTDOORUNITMAYCATCHlRE

IFmAMMABLEGASLEAKSAROUNDIT

s 0LEASEENSURESMOOTHmOWOFWATERWHENINSTALLINGTHEDRAINHOSE)MPROPERINSTALLINGMAYWETYOURFUNITURE

s !N)%#APPROVEDPOWERCORDSHOULDBEUSED0OWERCORDTYPE.9-

.O )TEM

1TY



L.H

310

299

500

792

330

INDOOR UNIT

CAUTION

FOR SERVICE PERSONNEL ONLY

WARNING

Indoor Unit / Outdoor Unit

RAK-18PSPA/RAC-18WSPA

RAK-25PSPA/RAC-25WSPA

RAK-35PSPA/RAC-35WSPA

s 2EADTHESAFETYPRECAUTIONSCAREFULLYBEFOREOPERATINGTHEUNIT

s 4HECONTENTSOFTHISSECTIONAREVITALTOENSURESAFETY0LEASEPAYSPECIALATTENTIONTOTHEFOLLOWINGSIGN

WARNING .......... Incorrect methods of installation may cause death or serious injury.

CAUTION .......... Improper installation may result in serious consequence.

Make sure to connect earth line.

This sign in the ﬁgures indicates prohibition.



"ESURETHATTHEUNITOPERATESINPROPERCONDITIONAFTERINSTALLATION%XPLAINTOCUSTOMERTHEPROPEROPERATIONANDMAINTENANCEOF

THEUNITASDESCRIBEDINTHEUSERgSGUIDE!SKACUSTOMERTOKEEPTHISINSTALLATIONMANUALTOGETHERWITHTHEINSTRUCTIONMANUAL

SAFETY PRECAUTION

WARNING

WARNING WARNING

CAUTION

THE CHOICE OF MOUNTING SITE

0LEASENOTETHEFOLLOWINGMATTERSANDOBTAINPERMISSIONFROMCUSTOMERBEFOREINSTALLATION

INDOOR UNIT

OUTDOOR UNIT

s 4HEUNITSHOULDBEMOUNTEDATSTABLENONVIBRATORYLOCATION

WHICHCANPROVIDEFULLSUPPORTTOTHEUNIT

s 4HE/UTDOOR UNITMUST BEMOUNTED ATA LOCATIONWHICH

CANSUPPORTHEAVYWEIGHT/THERWISENOISEANDVIBRATION

WILLINCREASE

s .ONEARBYHEAT SOURCE ANDNO OBSTRUCTION NEARTHE AIR

OUTLETISALLOWED

s 4HECLEARANCE DISTANCESFROM TOPRIGHTAND LEFTARE

SPECIlEDINlGUREBELOW

s 4HELOCATION MUSTBE CONVENIENTFOR WATERDRAINAGEAND

PIPECONNECTIONWITHTHE/UTDOORUNIT

s 4OAVOIDINTERFERENCEFROM NOISEPLEASE PLACETHE UNIT

ANDITS REMOTECONTROLLER ATLEAST MFROM THERADIO AND

TELEVISION

s 4OAVOIDANYERROR INSIGNAL TRANSMISSIONFROM THEREMOTE

CONTROLLERPLEASE PUTTHE CONTROLLERFARAWAYFROMHIGH

FREQUENCYMACHINESANDHIGHPOWERWIRELESSSYSTEMS

s $ONOT EXPOSETHEUNIT UNDERDIRECT SUNSHINEOR RAIN

"ESIDESVENTILATIONMUSTBEGOODANDCLEAROFOBSTRUCTION

s 4HEAIR BLOWNOUTOF THEUNIT SHOULDNOT POINTDIRECTLY TO

ANIMALSORPLANTS

s 4HECLEARANCESOFTHEUNITFROMTOPLEFTRIGHTANDFRONTARE

SPECIlEDINlGUREBELOW!TLEASTTHREEOFTHEABOVESIDES

MUSTBEOPENAIR

s 4HEINSTALLATIONHEIGHTSHOULDBEATLEASTMMORMORE

FROMTHEmOOR

s "ESURETHATTHEHOTAIRBLOWNOUTOFTHEUNITANDNOISEDO

NOTDISTURBTHENEIGHBOURHOOD

s $ONOTINSTALLATALOCATIONWHERETHEREISmAMMABLEGAS

STEAMOILANDSMOKE

s 4HELOCATIONMUSTBECONVENIENTFORWATERDRAINAGE

s 0LACETHE /UTDOORUNIT ANDITS CONNECTINGCORD ATLEAST

M AWAY FROM THEANTENNA ORSIGNAL LINEOF TELEVISION

RADIOORTELEPHONE4HISISTOAVOIDNOISEINTERFERENCE

.AMESOF)NDOOR#OMPONENTS

$IRECTIONOF0IPING

$IMENSIONOF-OUNTING

3TANDOFTHE/UTDOORUNIT

7HENTHEPOWERIS

SUPPLIEDFROMTHE

INDOORUNITPULLTHE

POWERCABLEFROMTHE

CABLEDRAWERATTHE

RIGHTORLEFTSIDEOF

THEINDOORUNIT

#ABLEDRAWERRIGHTSIDE

4HEREARE DIRECTIONSALLOWED

NAMELY BACKWARDPIPING

BACKWARDPIPING FROMLEFT

HORIZONTALLYPIPINGFROM RIGHT

HORIZONTALLYPIPINGFROM LEFT

VERTICALLYDOWNFROMRIGHTVERTICALLY

DOWNFROMLEFT

"ACKWARDPIPING

FROMLEFT

#ONNECTION

(ANGER

3CREWFOR(ANGER

!!!SIZE"ATTERY

2EMOTE#ONTROLLER

)NSULATIONSHEET

2EMOTE#ONTROLLER(OLDER

3CREWFOR2EMOTE

#ONTROLLER(OLDER

UNITMM

-OUNTING

3TAND

Figure showing the Installation

of Indoor and Outdoor Unit.

ABOVE

MM

ABOVEMM

0LUG

"ESURETO

COMPLETELY

SEALANYGAP

WITHPUTTY

ABOUTMM

MUSTNOTBEND

ABOUTM

MMORMORE

-AXIMUMPIPELENGTHM

-INIMUMPIPELENGTHM

4HEINDOORPIPINGSHOULD BE

INSULATEDWITHTHE ENCLOSED

INSULATIONPIPE)F THE INSULATOR IS

INSUFlCIENTPLEASEUSECOMMERCIAL

PRODUCTS

s 4HE REFRIGERATINGMACHINEOIL IS

EASILYAFFECTEDBYMOISTURE5SE

CAUTIONTOPREVENTWATER FROM

ENTERINGTHECYCLE

s 4HEDIFFERENCEINHEIGHTBETWEEN

THEINDOORAND OUTDOOR UNIT

SHOULDBEKEPTBELOWM

s 4HE CONNECTINGPIPENOMATTER

BIGORSMALL SHOULD ALL BE

INSULATEDWITHINSULATIONPIPEAND

THENWRAPPEDWITHVINYLTAPE

4HEINSULATORWILLDETERIORATEIFIT

ISNOTWRAPPEDWITHTAPE

4HECONNECTIONOFINSULATED DRAIN

HOSE

0LEASEUSEINSULATEDDRAIN HOSE FOR

THEINDOORPIPINGCOMMERCIAL

PRODUCT

)NNERDIAMETERMM

GIVECLEARANCEASWIDEASPOSSIBLE

ABOVEMM

ABOVE

MM

ABOVEMM

ABOVEMM

ABOVEMM

4HECLEARANCESOF THE

UNITFROM TOP LEFTRIGHT

ANDFRONTARE SPECIlED

INlGUREBELOW!TLEAST

THREEOFTHEABOVE

SIDESMUSTBEOPENAIR



GIVECLEARANC

ASWIDEAS

POSSIBLE

ABOVEMMWHEN

INSTALLEDONTHE

CEILINGOFBALCONY



1 2Installation of Hanger, Wall Penetration and Installation of Protection Pipe Installation Of The Indoor Unit

s 4HEDRAINING OFTHE WATERCONTAINERINSIDE THE)NDOOR UNITCAN BEDONE FROMTHE

LEFT4HEREFORETHE HANGERMUST BElXEDHORIZONTALLY ORSLIGHTLY TILTEDTOWARDSTHE

SIDEOFDRAINHOSE/THERWISECONDENSEDWATERMAYOVERmOWTHEWATERCONTAINER

Direct Mounting On The Wall

Procedures of Installation and Precautions

Installation Of Remote Controller

Wall Penetration and Installation of Protection Pipe

s 0LEASEUSEHIDDENBEAMSINTHEWALLTOHOLDTHEHANGER

6ISIBLEOUTLINEOFTHE

OUTDOORUNIT

$RAIN(OSE

,EVEL

,INE

7EIGHT

MM

MM

7ALLHOLE

(ANGER

3CREWFOR(ANGER

3CREWTHEHANGERATTHE

POSITIONSPOSSIBLYNEARTHE

UPPERANDLOWERHOOKSWHERE

THEINDOORUNITISHUNG5SEOR

MORESCREWSTOlXTHEHANGER

s0ROCEDURESTOlXTHEHANGER

s0ROCEDURESTOlXTHEHOLDEROFREMOTECONTROL

s 4HEREMOTECONTROLLERCANBEPLACEDINITSHOLDERWHICHISlXED

ONWALLORBEAM

s 4OOPERATETHE REMOTECONTROLLER AT ITSHOLDERPLEASEENSURE

THATTHE UNITCAN RECEIVESIGNALTRANSMITTED FROMTHE CONTROLLER

ATTHEPLACEWHERETHEHOLDERISTOBE

WHENSIGNAL ISRECEIVEDFROM THEREMOTE CONTROLLER4HESIGNAL

TRANSMISSIONISWEAKENBY THEFLUORESCENT LIGHT4HEREFORE

DURINGTHE INSTALLATIONOF THEREMOTE CONTROLHOLDERPLEASE

SWITCHONTHE LIGHTEVENDURINGDAYTIME TODETERMINETHE

MOUNTINGLOCATIONOFTHEHOLDER

s $RILLA MMHOLE ONWALL WHICHIS

SLIGHTLYTILTED TOWARDSTHEOUTDOOR SIDE

$RILLTHEWALLATASMALLANGLE

s #UTTHEPROTECTIONPIPEACCORDINGTOTHE

WALLTHICKNESS

s %MPTYGAPIN THE SLEEVEOF PROTECTION

PIPESHOULDBECOMPLETELYSEALED WITH

PUTTYTOAVOIDDRIPPINGOFRAINWATERINTO

THEROOM

s 0LEASEENSURESMOOTH FLOWOF WATER

WHENINSTALLING THEDRAINHOSE)MPROPER

INSTALLINGMAYWETYOURFUNITURE

s !N )%#APPROVEDPOWER CORDSHOULD BE

USED0OWERCORDTYPE.9-

s 4HERUBBER STRAPUSED FORFIXINGTHE

INSULATORSHOULD NOTBE TIEDWITH GREATFORCE

/THERWISETHISWILL DAMAGEHEAT INSULATION

ANDCAUSESWATERCONDENSATION

s 0LEASEPULLTHELOWERPARTOFTHE)NDOORUNIT

OUTWARDSTOCHECKIFTHEUNITISHOOKEDONTO

THEHANGER)MPROPERINSTALLATIONMAYCAUSE

VIBRATIONANDNOISE

s 4RANSFORMTHEPIPINGWHILEHOLDINGDOWNTHE

LOWERPORTIONOFPIPESUPPORTBYHAND

$RILLHOLESONWALL

!SSHOWNBELOW

$RILLHOLESONWALL

!SSHOWNBELOW

0USHPLUGINTOTHEHOLES

!SSHOWNBELOW

0USHPLUGINTOTHEHOLES

!SSHOWNBELOW

&IXTHEHANGERONWALLWITH

XSCREW!SSHOWN

INlGUREBELOW

7ALL

3CREW

(ANGER

MM

MM

0LUG

0ROCURE

LOCALLY

0LUG0ROCURELOCALLY

#EILING

2EMOTE

#ONTROL

(OLDER

4HEREMOTECONTROLLER

MUSTBESLIDEINTHE

REMOTECONTROLLER

HOLDERINTHEDIRECTION

ASSHOWNINTHElGURE

UNTILITHOOKSATTHE

LOWERENDOFTHEREMOTE

CONTROLLERHOLDER

2EMOTE

#ONTROLLER

2EMOTE

#ONTROLLER

(OLDER

3CREWPIECES

)NDOOR

/UTDOOR

MM

3EALWITH

PUTTY

3EALWITH

PUTTY

0ROTECTION

PIPE

3LEEVEOF

PROTECTION

PIPE

7!,,

"ESURETHATTHEWIREISNOT

INCONTACTWITHANYMETALIN

THEWALL0LEASE USETHE

PROTECTIONPIPEAS WIRE

PASSINGTHROUGHTHEHOLLOW

PART OFTHE WALLSOAS TO

PREVENTTHE POSSIBILITYOF

DAMAGEDBYMOUSE

5NLESSITSEALSCOMPLETELY

ANYAIRWITH HIGHHUMIDITY

mOWSFROMOUTDOORANDANY

DEWMAYDROP

Cutting Low Cover bush

s 7HILEINSTALLINGTHEPIPEFROMTHERIGHTLEFTOR

BOTTOMSIDEUSE AKNIFETO CUTOPENINGS AS

SHOWNINlGURE4HENSMOOTHENTHEEDGESOF

OPENINGSWITHAlLE

Changed of Drain Hose and Installation Procedures.

s %XCHANGETHELOCATIONOFDRAINHOSEANDDRAINCAPWHILEINSTALLINGTHEPIPEFROMTHELEFTSIDEAS

SHOWNINBELOW"ESURETOPLUGINTHEDRAINHOSEUNTILTHEINSULATINGMATERIALFOLDSUPONITSELF

s #ONNECTCONNECTINGCORD

s 0ULLOUTTHEPIPECONNECTINGCORDANDDRAINHOSE

s )NSERTTHEPIPETHROUGHTHEWALLHOLE

s 4HEREFRIGERATINGPIPESANDCONNECTINGCORD

TRANSFORMANDAREATTACHED

4HEUPPER PART OFTHE )NDOORUNIT ISHANGED ONTHE

HANGER

4HEPROJECTION ATTHE LOWERPART OFTHE )NDOORUNIT IS

HOOKEDONTOTHEHANGER

/PENINGS

PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)

PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)

0REPARATION

)NSTALLATION

#ONNECTINGCORDSPIPEAND

DRAINHOSEMUSTBELAID

TOGETHERWITH6INYLTAPE

7ALLHOLE

0ROJECTION

0LIERS

$RAIN

(OSE

3CREW

0IPE

$RAINCAP

$RAINOUTLET

3OCKEHEAD

WRENCHMM

3OCKEHEAD

WRENCHMM

2UBBERSTRAPTIED

WITHGREATFORCE

4RANSFORMAFTER

BENDINGDOWNWARD

0IPE

SUPPORT

#ONNECTING#ORD

$RAIN(OSE

0ROTECTION

0IPE

2EFRIGERATING

0IPE

$RAINLAYOUTOF

BACKWARDPIPING

0IPE

(ANGER

$RAINHOSE#ABLE

,IFTTHEBODY

OFTHEUNIT

UPWARDSAND

THENFORCEIT

DOWNWARDS

0REPARATION

s 0LEASEUSEPLIERSTOPULL

OUTTHEDRAINCAP4HISIS

ANEASIERWAYTOREMOVE

THEDRAINCAP

)NSUFFICIENTINSERTMAY

RESULTINWATERLEAKAGE

s0USHTHEPIPE DEEPLYUNTIL THE

INSULATINGSECTIONOFTHEDRAINHOSE

ENDGETSOVERTHE RIBATTHEINDOOR

UNITSIDEANDlXITBYSCREW

s2EMOVELOWCOVER

s5SESOCKETHEADWRENCH TO )NSERT

DRAINCAPUPTOTHELOCATIONSECURELY

TILLTHECAPSTOPS

$RAIN(OSE

INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES

THE CONNECTION OF REFRIGERATING PIPE DURING

THE INSTALLATION OF INDOOR UNIT

s 4HEREFRIGERATING PIPESHOULD BEADJUSTED TOlT INTO

THEHOLE ONTHE WALLANDTHEN READYFORFURTHER

CONNECTION

s 4HETERMINALSOFCONNECTEDPIPESMUSTBECOVERED

WITHINSULATORUSEDFORTERMINALCONNECTION4HENTHE

PIPESAREWRAPPEDWITHINSULATIONPIPE

s #ONNECTTHECONNECTING CORDAFTER REMOVINGLOW

COVER

 2EFERTO#/..%#4)/./&0/7%2#/2$

s !FTERADJUSTMENTlTTHE CONNECTINGCORDANDPIPES

INTOTHESPACEAVAILABLEUNDERTHEUNIT5SEHOLDERTO

HOLDTHEMTIGHT

s (OLDERCAN BE ATTACHEDAT THEEITHER OF PLACES

0LEASESELECTTHEEASIERPOSITION

$RAINHOSE

0ROJECTION

0ROJECTION

PIPE

(OOK

ABOUTCM

(OLDER

BELOW

MM

MM

#ONNECTING

CORD

)NSULATIONPIPEMUSTBEWRAPPEDWITH

VINYLTAPEATEVERYMM

4HEENDOFTHEREFRIGERATINGPIPESAREAT

LOCATIONSMARKEDWITHh

vSYMBOL

0LEASEBENDATASMALL

RADIUSTOFORMANARC

0REPARATION4O)NSTALL2EFRIGERATING0IPES

)NSTALLATION

(ANGTHEINDOOR UNITONTO THEHANGER 5SETHE TEMPORARY STAND

ATTHE BACKOFTHE )NDOORUNIT TOPUSH ITSLOWERPART CM

FORWARDS

s 0LACETHEDRAINHOSETHROUGHTHEHOLEONTHEWALL

s 7RAPTHEREFRIGERATINGPIPESWITH INSULATION PIPEAFTER

CONNECTINGREFRIGERATINGPIPE

s #ONNECTTHECONNECTINGCORDAFTERREMOVINGLOWCOVER

 2EFERTO#ONNECTIONOF0OWER#ORD

s !FTERADJUSTMENTTHECONNECTINGCORDANDREFRIGERATINGPIPES

AREPLACEDINTOTHESPACEAVAILABLEUNDERTHE)NDOORUNIT

s 4HEPROJECTIONOF)NDOORUNITMUSTHOOKTOTHEHANGER

$RAINHOSE

#ONNECTINGCORD

#ONNECTED

SECTION

)NSULATIONMATERIALFORPIPE

CONNECTION

3LEEVEOF

PROTECTIONPIPE

0ULLTHISTOTHEFRONTDURINGTHE

CONNECTIONOFREFRIGERATING

PIPETOEASETASK

#ONNECTING

CORD

2EFRIGERATING

PIPE

7ALLHOLE

$RAINHOSE

$RAINLAYOUTOFBACKWARDPIPINGFROMLEFT

0IPE

#ABLE

(EAT

INSULATIONPIPE

3 Heat Insulation and Finish of the Piping

4 Installation of Drain Hose

s 4HECONNECTEDTERMINALSSHOULDBECOMPLETEDSEALED

WITHHEATINSULATORANDTHENTIEDUPWITHRUBBERSTRAP

s $ONOTTIETHETERMINALSWITHTHETAPETOOTIGHT

)FANYCLEARANCE OROVERTIGHTENINGMAYCAUSE

CONDENSATION

s 0LEASETIETHEPIPEANDPOWERLINETOGETHERWITHVINYL

TAPEASSHOWNINTHElGURESHOWINGTHEINSTALLATIONOF

)NDOORAND/UTDOORUNITS

s 4OENHANCETHEHEATINSULATIONANDTOPREVENTWATER

CONDENSATIONPLEASE COVERTHEOUTDOOR PART OFTHE

DRAINHOSEANDPIPEWITHINSULATIONPIPE

s #OMPLETELYSEALANYGAPWITHPUTTY

0UTTY

"ENDINGUPWARDS #ONDENSEDWATER

POND

#ONDENSEDWATER

POND

$ITCH

"ESURETHATTHEDRAINHOSEIS

NOTLOOSELYCONNECTEDBENDOR

PROPERCONDITIONLIKELEFTlGURE

9OUAREFREE TOCHOOSE THE SIDELEFT ORRIGHT FORTHE INSTALLATIONOF DRAIN

HOSE0LEASEENSURETHESMOOTHmOWOFCONDENSEDWATEROFTHE)NDOOR

UNITDURINGINSTALLATION#ARELESSMAYRESULTINWATERLEAKAGE

CAUTION

OUTDOOR UNIT

INSTALLATION OFREFRIGERATING PIPES AND AIRREMOVAL

CONNECTION OF POWER CORD

FINAL STAGE OF INSTALLATION

L N C D

(A) (B)

30mm

10mm

70mm

10mm

50mm

10mm

50mm

AIR REMOVAL

0LEASEFACETHISSIDESUCTION

SIDEOFTHEUNITTOTHEWALL

0LEASEREMOVESIDECOVER

WHENCONNECTINGTHEPIPING

ANDCONNECTINGCORD

0ULLDOWNWARD

s $ONOTTOUCHTHESUCTIONPORT

BOTTOMSURFACEORALUMINUM

lNOFTHEOUTDOORUNIT

&AILURETODOSOMAYCAUSE

ANINJURY

1 Preparation of Pipe 3 Remove of Air From The Pipe And Gas Leakage Inspection

2 Pipe Connection

#OPPERPIPE

$IE

4RIMMINGTOOL

s 2EMOVEBURRANDJAGGEDEDGEWILLCAUSELEAKAGE

s 0OINTTHE SIDETO BETRIMMEDDOWNWARDSDURING TRIMMING TOPREVENTCOPPER

CHIPSFROMENTERINGTHEPIPE

&LARENUT

7RENCH

4ORQUE

WRENCH

Procedures of using Vacuum Pump for Air Removal

!SSHOWNIN RIGHT lGUREREMOVETHECAP

OFVALVECORE4HEN CONNECTTHE CHARGE

HOSE 2EMOVETHECAP OFVALVEHEAD

#ONNECTTHEVACUUMPUMPADAPTERTOTHE

VACUUMPUMPAND CONNECTTHE CHARGE

HOSETOTHEADAPTER

&ULLYTIGHTERTHE(ISHUTTLEOFTHEMANIFOLD

VALVEAND COMPLETELYUNSCREW THE,O

SHUTTLE 2UNTHE VACUUMPUMP FORABOUT

MINUTESTHEN COMPLETELYTIGHTEN THE

,OSHUTTLE ANDSWITCHOFF THEVACUUM

PUMP

s ,OOSENTHESPINDLEOF THESERVICEVALVE

WITHSMALL DIAMETERBY TURN AND

TIGHTENTHESPINDLE IMMEDIATELYAFTER 

TOSECONDS

s 2EMOVETHE CHARGINGHOSE FROMTHE

SERVICEVALVE

#OMPLETELYUNSCREWTHE SPINDLEOF THE

SERVICEVALVEATPLACESINANTICLOCKWISE

DIRECTIONTO ALLOWTHEFLOW OFREFRIGERANT

USING(EXAGONAL7RENCHKEY

4IGHTENTHE CAPOF VALVEHEAD#HECKTHE

CAPgSPERIPHERYIFTHEREISANYGASLEAKAGE

4HETASKISTHENCOMPLETED

0LEASEUSEGASLEAKAGEDETECTORTOCHECKIFLEAKAGE

OCCURSAT CONNECTIONOF &LARENUT ASSHOWNON THE

RIGHT

)FGASLEAKAGEOCCURSFURTHERTIGHTENTHECONNECTION

TOSTOPLEAKAGE

7HENTHEMETERREACHES+0A

CM(GDURING PUMPING FULLY

TIGHTENTHESHUTTLE

-ETERSHOWING

PRESSURE

#HARGE

HOSE

2!

-ANIFOLD

6ACUUM

PUMP

6ACUUM

PUMP

ADAPTER

7HENPUMPINGSTARTS SLIGHTLY

LOOSENTHEmARENUTTOCHECKOF

AIRSUCKEDIN4HEN TIGHTEN THE

mARENUT

4HEBODYOFSERVICE

VALVE

#APOF

VALVECORE

(EXAGONAL

WRENCH+EY

#APOFVALVE

HEAD

#APOFVALVE

HEAD

#LOSED

VALVE

6ALVE

'ASLEAKAGEINSPECTION

WARNING

s 4()3!00,)!.#%-534"%

%!24(%$

Procedures of Wiring

)NDOOR5NIT

'REEN9ELLOW

'REEN9ELLOW 'REEN9ELLOW

3TRIPWIRES

#ONNECTING#ORD

!#6

(Z

#ONNECTINGCORD

!FTERREMOVETHESCREW

ANDTERMINAL COVER AND

PUTTHECONNECTING CORDS

ANDlXTHETERMINALCOVER

WITHSCREW

%ARTH

$ETAILOFCUTTINGTHECONNECTINGCORD

OR



/UTDOOR5NIT

Method to remove the low cover

s 4HENAKEDPARTOFTHEWIRECORESHOULDBEMMlXITTOTHETERMINALTIGHTLY4HEN

TRYTOPULLTHEINDIVIDUALWIRETOCHECKIFTHECONTACTISTIGHT)MPROPERINSERTIONMAY

BURNTHETERMINAL

s "ESURETOUSEONLYWIRESPECIlEDFORTHEUSEOFAIRCONDITIONER

s 0LEASEREFERTOTHE MANUALFORWIRE CONNECTIONAND THEWIRING TECHNIQUE SHOULD

MEETTHESTANDARDOFTHEELECTRICALINSTALLATION

s 4HEREISAN!#VOLTAGEDROPBETWEENTHE,.TERMINALIFTHEPOWERISON4HEREFORE

BESURETOREMOVETHEPLUGFROMITSSOCKET

s ,EAVESOME SPACE INTHE CONNECTINGCORD FORMAINTENANCE

PURPOSEANDBESURETOSECUREITWITHTHECORDBAND

s 3ECURETHECONNECTING CORDALONG THECOATED PARTOF THEWIRE

USINGTHE CORDBAND$ONOT EXERTPRESSUREON THEWIRE ASTHIS

MAYCAUSEOVERHEATINGORlRE

s .EVERREMODELTHEPOWERPLUGNOREXTENDTHELONGDISTANCE

CORD

s +EEPADDITIONALLENGTHFORTHEPOWERCORDANDDONOTRENDER

THEPLUGUNDEREXTERNALFORCEASTHISMAYCAUSEPOORCONTACT

s $ONOTlXTHEPOWERCORDWITH5SHAPENAIL

s 4HEPOWERCABLEEASILYGENERATES HEAT$ONOT BRINGTHE

CABLETOGETHERWITHAWIREORVINYLTIE

s 0LEASEENSURE THATTHE AIRCONDITIONER ISIN NORMAL OPERATING

CONDITIONDURINGTHEOPERATIONTEST

s %XPLAINTO YOURCUSTOMERTHE PROPEROPERATION PROCEDURESAS

DESCRIBEDINTHEUSERgSMANUAL

s )FTHE INDOORUNIT WONgTOPERATECHECK THECABLEFORCORRECT

CONNECTION

s 4URNONTHELAMPINTHEROOMWHERETHEINDOORUNITISINSTALLED

ANDCHECKTHEREMOTECONTROLLERFORNORMALOPERATION

Wiring of The Indoor Unit

Wiring of the Outdoor Unit

s 0LEASEREMOVETHESIDECOVERFORWIRECONNECTION

Checking for the electric source and the voltage range

s "EFOREINSTALLATION THE POWERSOURCEMUST BECHECKEDAND NECESSARY WIRINGWORKMUST

BECOMPLETED4OMAKETHE WIRINGCAPACITY PROPERUSE THEWIRE GAUGELIST BELOWFORTHE

WIRINGFROMHOUSEDISTRIBUTIONFUSEBOXTOTHEOUTDOORUNITINCONSIDERATIONOFTHEBLOCKED

ROTORCURRENT

s )NVESTIGATETHE POWERSUPPLYCAPACITY ANDOTHER

ELECTRICALCONDITIONSATTHEINSTALLINGLOCATION

$EPENDINGONTHEMODELOFROOMAIRCONDITIONERTOBE

INSTALLEDREQUESTTHECUSTOMERTOMAKEARRANGEMENTS

FORTHENECESSARYELECTRICALWORKETC

4HEELECTRICAL WORK INCLUDESTHE WIRINGWORKUP THE

OUTDOORUNIT)NLOCALITIES WHEREELECTRICAL CONDITIONS

AREPOORUSEOFAVOLTAGEREGULATIONISRECOMMENDED

s )NSTALLOUTDOORFORTHEROOM AIRCONDITIONERWITHIN THE

REACHINGRANGEOFTHELINECORD

s &ORWIRECONNECTIONOFTHE)NDOORUNITYOUNEEDTOREMOVETHEFRONTCOVERTHELOWCOVER

UNDERTHEBODYOFTHEUNITANDTERMINALCOVER

s 2EMOVETHECOVERFROMTHETERMINALBASEANDSCREWTHECABLE

s "EFOREmARINGPLEASEPUTONTHEmARENUT

s 0LEASEBECAREFULWHENBENDINGTHECOPPERPIPE

s 3CREWINMANUALLYWHILE ADJUSTINGTHE CENTER !FTERTHAT USEA TORQUEWRENCH TO

TIGHTENTHECONNECTION

s 0LEASEUSE

EXCLUSIVETOOLFOR

REFRIGERANT2!

/UTER

$IAMETER

!MM2IGID&LARING4OOL

&OR2!TOOL &OR2TOOL



 



 

s )NCASEOFREMOVINGmARENUTOFAINDOORUNITlRSTREMOVE

ANUTOFSMALLDIAMETERSIDEORASEALCAPOFBIGDIAMETER

SIDEWILL FLYOUT&REEFROM WATERINTO THEPIPING WHEN

WORKING

s "ESURETOTIGHTENTHEmARENUTTOTHESPECIlEDTORQUEWITH

ATORQUEWRENCH

)FTHEmARENUTISOVERTIGHTENEDTHENUTMAYBESPLITAFTERA

LONGPERIODHASPASSEDANDMAYCAUSEAREFRIGERANTLEAK

/UTERDIAMETER



OFPIPE

4ORQUE.qM

KGFqCM

3MALLDIAMETERSIDE 

nn

,ARGEDIAMETERSIDE 

nn

6ALVE

HEADCAP

3MALLDIAMETERSIDE



nn

,ARGEDIAMETERSIDE



nn

6ALVECORECAP

nn

s 0ULLAT THE

AND

IN

THEDIRECTIONS ASSHOWN

BYARROWSTOREMOVETHE

COVER

How to connect the optional parts

(RAC Adapter, Weekly Timer Wired Remote Control, Wired Remote Control)

s &OR CABLECONNECTIONTO CONTROL07"YOUNEED TO

REMOVEFRONTCOVERANDELECTRICALBOXCOVER

 %ACHCONNECTINGLOCATIONISASBELOW



#ARD+EY#.



(,).+#.



7IRED2EMOTE#ONTROL#.

s 0LEASECHECKAND CONFIRM MANUALSATTACHED TOEACH

OPTIONALPARTSFORMORECONNECTIONDETAILS

s 9OUCANREFERTOTHISINSTALLATIONMANUALHOWTOREMOVE

ANDREATTACHTHEFRONTCOVER

s 0LEASEBECAREFULNOTTODAMAGELEADWIRESBYEDGEOF

PLATEWHENCONNECTINGTHEOPTIONALPARTS

s )FYOUCANNOTATTACHTHESIDEPLATEDUETOTHECONNECTIONCORDPLEASE

PRESSTHECONNECTINGCORDINTHEDIRECTIONTOTHEFRONTPANELTOlXIT

s "ESURETHATTHEHOOKSOFTHESIDECOVERlXEDINCERTAINLY/THERWISE

WATERLEAKAGEMAYOCCURANDTHISCAUSESSHORTCIRCUITORFAULTS

s 4HECONNECTINGCORDSHOULDNOTTOUCHTOSERVICEVALVEANDPIPES

ITBECOMESHIGHTEMPERATUREINHEATINGOPERATION

#.

#.

#.

WARNING

)-0/24!.4

7IRELENGTH 7IREGAUGE

UPTO

M MM

UPTOM MM

UPTOM MM

COVER

%ARTHTERMINAL

&USE#APACITY

!TIMEDELAYFUSE

Power Source And Operation Test

Power Source

Force-cooling operation How to remove the front cover How to Attach the Front Cover

Operation test

!FTERCOMPLETING THESERVICE SWITCH

OPERATIONBESURETOKEEPTHESWITCH

PRESSEDFORONE ORMORESECONDS

ANDSTOPTHEFORCECOOLINGOPERATION

s 7HENTHE SERVICE SWITCHOFTHE OUTDOORUNIT IS PRESSEDFOR

OR MORESECONDSTHE FORCECOOLINGOPERATION STARTS5SE

THISMODEWHENPERFORMINGTHEFAILUREDIAGNOSISORCOLLECTING

REFRIGERANTINTOTHEOUTDOORUNIT

3CREW

3ERVICESWITCH)FTHESWITCHISPRESSEDFORONE

ORMORESECONDS THE FORCECOOLINGOPERATION

STARTS)F THESWITCHIS PRESSED FORADDITIONAL

ONEORMORESECONDSTHEOPERATIONSTOPS

s $ONOTOPERATETHEUNITFORMORETHAN

MINUTESWHILE THESPINDLE OF THE

SERVICEVALVEISCLOSED

 2EMOVETHEFRONTPANEL

 2EMOVETHElLTERS

!FTERREMOVINGTWOSCREWSPULLTHECENTEROFTHEFRONTCOVER

TOWARDSYOUANDRELEASETHECLAWS

0ULLTHESIDEFACESLOWERSECTIONSOFTHEFRONTCOVERTOWARDS

YOUASSHOWNINTHElGUREANDREMOVETHECOVER

s 0LEASEREMOVEANDATTACHTHEFRONTPANELBYBOTHHANDS

s !FTEROPENINGTHEFRONTPANELBYBOTHHANDS

 5NDOTHERIGHTARMWHILEPUSHINGITINSIDE

3LIDETHEFRONTPANELTORIGHTASSHOWNINlGURE4HENREMOVE

WHILEPULLINGITTOFRONT

 #HECKTHATTHEDRAINPANISSECURELYATTACHED

!FTERINSTALLINGTHEFRONTCOVERONTOTHEUNITHOOKTHREECLAWSAT

UPPERSIDE OFTHE COVERSECURELY4HEN PUSHTHE CENTEROF THE

FRONTCOVERTOLOCKTHECLAWS

4IGHTENTHETWOSCREWS

 )NSTALLTHElLTER

3LIDE THESHAFTS OFTHE RIGHT ANDLEFT ARMS ONTHE FRONTPANEL

ALONGTHESTEPSTOINSERTTHESHAFTSINTOTHEHOLESTILLTHEYSTOP

!FTERCHECKINGTHATTHESHAFTSARESECURELYINSERTEDCLOSETHE

PANEL

HOW TO REMOVE INDOOR UNIT

s 0USHUPTHE;053(=SECTIONSATTHEBOTTOMOFTHEINDOORUNITAND

PULLTHE BOTTOMPLATE TOWARDSYOU4HEN THECLAWSARE RELEASED

FROMTHESTATIONARYPLATE

 4HE;053(=SECTIONSAREINDICATEDBYARROWSINTHERIGHTlGURE

;053(=MARKPOSITIONS

s 0LEASEMOUNTTHE/UTDOORUNITOFSTABLEGROUNDTOPREVENTVIBRATIONANDINCREASE

OFNOISELEVEL

s $ECIDETHELOCATIONFORPIPINGAFTERSORTINGOUTTHEDIFFERENTTYPESOFPIPEAVAILABLE

s 7HENREMOVING SIDECOVERPLEASE PULLTHE HANDLEAFTER UNDOINGTHE HOOKBY

PULLINGITDOWNWARD2EINSTALLTHESIDECOVERINTHEREVERSEORDEROFTHEREMOVAL

s 5SEAPIPECUTTERTOCUTTHECOPPERPIPEANDREMOVEBURR

CAUTION

WARNING

CAUTION

< 10030C : >

Hitachi RAK-25PSPA Installation guide

Brand: Hitachi

Model: RAK-25PSPA

Category: Split-system air conditioners

Type: Installation guide

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Hitachi RAK-25PSPA Installation guide

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