Hitachi RAC-18WSPA, Installation Manual, Page: 2 / 2

OUTDOOR UNIT
INST
ALLA
TION OFREFRIGERA
TING PIPES
AND
AIRREMOV
AL
CONNECTION OF POWER CORD
FINAL
ST
AGE OF INST
ALLA
TION
L N C D
(A) (B)
30mm
10mm
10mm
70mm
10mm
50mm
10mm
50mm
D
C
C D
AIR REMOV
AL
0LEASEFACETHISSIDESUCTION
SIDE OFTHEUNITTOTHEWALL 0LEASEREMOVESIDECOVER
WHENCONNECTINGTHEPIPING
ANDCONNECTINGCORD
0ULLDOWNWARD
s $ONOTTOUCHTHESUCTIONPORT
BOTTOMSURFACEORALUMINUM
lNOFTHEOUTDOORUNIT
&AILURETODOSOMAYCAUSE
ANINJURY
1 Preparation of Pipe 3 Remove of Air From The Pipe And Gas Leakage Inspection
2 Pipe Connection
#OPPERPIPE
#OPPERPIPE
$IE
$IE
!
4RIMMINGTOOL
s 2EMOVEBURRANDJAGGEDEDGEWILLCAUSELEAKAGE
s 0OINTTHESIDETOBETRIMMEDDOWNWARDSDURINGTRIMMINGTOPREVENTCOPPER
CHIPSFROMENTERINGTHEPIPE
&LARENUT
7RENCH
4ORQUE
WRENCH
Procedures of using Vacuum Pump for Air Removal
1
2
3
4
!SSHOWNINRIGHTlGUREREMOVETHECAP
OF VALVE CORE4HEN CONNECT THE CHARGE
HOSE 2EMOVE THE CAP OF VALVE HEAD
#ONNECTTHEVACUUMPUMPADAPTERTOTHE
VACUUM PUMP AND CONNECT THE CHARGE
HOSETOTHEADAPTER
&ULLYTIGHTERTHE(ISHUTTLEOFTHEMANIFOLD
VALVE AND COMPLETELY UNSCREW THE ,O
SHUTTLE2UNTHEVACUUM PUMPFORABOUT
MINUTESTHENCOMPLETELYTIGHTENTHE
,O SHUTTLE AND SWITCH OFF THE VACUUM
PUMP
s ,OOSENTHESPINDLEOFTHESERVICEVALVE
WITH SMALL DIAMETER BY TURN AND
TIGHTENTHESPINDLEIMMEDIATELYAFTER
TOSECONDS
s 2EMOVE THE CHARGING HOSE FROM THE
SERVICEVALVE
#OMPLETELY UNSCREW THE SPINDLE OF THE
SERVICEVALVEATPLACES INANTICLOCKWISE
DIRECTION TO ALLOW THE FLOW OF REFRIGERANT
USING(EXAGONAL7RENCHKEY
4IGHTENTHECAPOFVALVEHEAD#HECKTHE
CAPgSPERIPHERYIFTHEREISANYGASLEAKAGE
4HETASKISTHENCOMPLETED
0LEASEUSEGASLEAKAGEDETECTORTOCHECKIFLEAKAGE
OCCURS AT CONNECTION OF &LARE NUT AS SHOWN ON THE
RIGHT
)FGASLEAKAGEOCCURSFURTHERTIGHTENTHECONNECTION
TOSTOPLEAKAGE
7HENTHEMETER0A
CM(G DURING PUMPING FULLY
TIGHTENTHESHUTTLE
-ETERSHOWING
PRESSURE
#HARGE
HOSE
2!
-ANIFOLD
6ACUUM
PUMP
6ACUUM
PUMP
ADAPTER
7HEN PUMPING STARTS SLIGHTLY
LOOSENTHEmARENUTTOCHECKOF
AIRSUCKEDIN4HENTIGHTENTHE
mARENUT
4HEBODYOFSERVICE
VALVE
#APOF
VALVECORE
(EXAGONAL
EY
#APOFVALVE
HEAD
#APOFVALVE
HEAD
#LOSED
VALVE
6ALVE
6ALVE
'ASLEAKAGEINSPECTION
WARNING
s 4()3!00,)!.#%-534"%
%!24(%$
Procedures of Wiring
)NDOOR5NIT
)NDOOR5NIT
'REEN9ELLOW
'REEN9ELLOW 'REEN9ELLOW
3TRIPWIRES
#ONNECTING#ORD
!#6
’(Z
#ONNECTINGCORD
#ONNECTINGCORD
!FTER REMOVE THE SCREW
AND TERMINAL COVER AND
PUTTHECONNECTINGCORDS
ANDlXTHETERMINALCOVER
WITHSCREW
%ARTH $ETAILOFCUTTINGTHECONNECTINGCORD
’OR
’
/UTDOOR5NIT
/UTDOOR5NIT
Method to remove the low cover
s 4HENAKEDPARTOFTHEWIRECORESHOULDBEMMlXITTOTHETERMINALTIGHTLY4HEN
TRYTOPULLTHEINDIVIDUALWIRETOCHECKIFTHECONTACTISTIGHT)MPROPERINSERTIONMAY
BURNTHETERMINAL
s "ESURETOUSEONLYWIRESPECIlEDFORTHEUSEOFAIRCONDITIONER
s 0LEASEREFERTOTHEMANUALFORWIRECONNECTIONANDTHEWIRINGTECHNIQUESHOULD
MEETTHESTANDARDOFTHEELECTRICALINSTALLATION
s 4HEREISAN!#VOLTAGEDROPBETWEENTHE,.TERMINALIFTHEPOWERISON4HEREFORE
BESURETOREMOVETHEPLUGFROMITSSOCKET
s ,EAVE SOME SPACE IN THE CONNECTING CORD FOR MAINTENANCE
PURPOSEANDBESURETOSECUREITWITHTHECORDBAND
s 3ECURE THE CONNECTING CORD ALONG THE COATED PART OF THE WIRE
USINGTHECORDBAND$ONOTEXERTPRESSUREONTHEWIREASTHIS
MAYCAUSEOVERHEATINGORlRE
s .EVERREMODELTHEPOWERPLUGNOREXTENDTHELONGDISTANCE
CORD
s +EEPADDITIONALLENGTHFORTHEPOWERCORDANDDONOTRENDER
THEPLUGUNDEREXTERNALFORCEASTHISMAYCAUSEPOORCONTACT
s $ONOTlXTHEPOWERCORDWITH5SHAPENAIL
s 4HEPOWERCABLEEASILYGENERATESHEAT$ONOTBRINGTHE
CABLETOGETHERWITHAWIREORVINYLTIE
s 0LEASEENSURETHATTHEAIRCONDITIONERISINNORMALOPERATING
CONDITIONDURINGTHEOPERATIONTEST
s %XPLAINTOYOURCUSTOMERTHEPROPEROPERATIONPROCEDURESAS
DESCRIBEDINTHEUSERgSMANUAL
s )F THE INDOOR UNIT WONgT OPERATE CHECK THE CABLE FOR CORRECT
CONNECTION
s 4URNONTHELAMPINTHEROOMWHERETHEINDOORUNITISINSTALLED
ANDCHECKTHEREMOTECONTROLLERFORNORMALOPERATION
Wiring of The Indoor Unit
Wiring of the Outdoor Unit
s 0LEASEREMOVETHESIDECOVERFORWIRECONNECTION
Checking for the electric source and the voltage range
s "EFOREINSTALLATIONTHEPOWERSOURCEMUSTBECHECKEDANDNECESSARYWIRINGWORKMUST
BECOMPLETED4OMAKETHEWIRINGCAPACITYPROPERUSETHEWIREGAUGELISTBELOWFORTHE
WIRINGFROMHOUSEDISTRIBUTIONFUSEBOXTOTHEOUTDOORUNITINCONSIDERATIONOFTHEBLOCKED
ROTORCURRENT
s )NVESTIGATE THE POWER SUPPLY CAPACITY AND OTHER
ELECTRICALCONDITIONSATTHEINSTALLINGLOCATION
$EPENDINGONTHEMODELOFROOMAIRCONDITIONERTOBE
INSTALLEDREQUESTTHECUSTOMERTOMAKEARRANGEMENTS
FORTHENECESSARYELECTRICALWORKETC
4HE ELECTRICAL WORK INCLUDES THE WIRING WORK UP THE
OUTDOORUNIT)NLOCALITIESWHEREELECTRICALCONDITIONS
AREPOORUSEOFAVOLTAGEREGULATIONISRECOMMENDED
s )NSTALLOUTDOORFORTHEROOMAIRCONDITIONERWITHINTHE
REACHINGRANGEOFTHELINECORD
s &ORWIRECONNECTIONOFTHE)NDOORUNITYOUNEEDTOREMOVETHEFRONTCOVERTHELOWCOVER
UNDERTHEBODYOFTHEUNITANDTERMINALCOVER
s 2EMOVETHECOVERFROMTHETERMINALBASEANDSCREWTHECABLE
s "EFOREmARINGPLEASEPUTONTHEmARENUT
s 0LEASEBECAREFULWHENBENDINGTHECOPPERPIPE
s 3CREWINMANUALLYWHILEADJUSTINGTHECENTER!FTERTHATUSEATORQUEWRENCHTO
TIGHTENTHECONNECTION
s 0LEASEUSE
EXCLUSIVETOOLFOR
REFRIGERANT2!
/UTER
$IAMETERŒ
!MM 2IGID&LARING4OOL
&OR2!TOOL &OR2TOOL
s )NCASEOFREMOVINGmARENUTOFAINDOORUNITlRSTREMOVE
ANUTOFSMALLDIAMETERSIDEORASEALCAPOFBIGDIAMETER
SIDE WILL FLY OUT &REE FROM WATER INTO THE PIPING WHEN
WORKING
s "ESURETOTIGHTENTHEmARENUTTOTHESPECIlEDTORQUEWITH
ATORQUEWRENCH
)FTHEmARENUTISOVERTIGHTENEDTHENUTMAYBESPLITAFTERA
LONGPERIODHASPASSEDANDMAYCAUSEAREFRIGERANTLEAK
/UTERDIAMETER
OFPIPE’
4ORQUE.qM
KGFqCM
3MALLDIAMETERSIDE nn
,ARGEDIAMETERSIDE nn
6ALVE
HEADCAP
3MALLDIAMETERSIDE nn
,ARGEDIAMETERSIDE nn
6ALVECORECAP nn
1
2
s 0ULL AT THE
1
AND
2
IN
THEDIRECTIONSASSHOWN
BYARROWSTOREMOVETHE
COVER
How to connect the optional parts
(RAC Adapter, Weekly Timer Wired Remote Control, Wired Remote Control)
s &OR CABLE CONNECTION TO CONTROL 07" YOU NEED TO
REMOVEFRONTCOVERANDELECTRICALBOXCOVER
%ACHCONNECTINGLOCATIONISASBELOW
1
#ARD+EY#.
2
(,).+#.
3
7IRED2EMOTE#ONTROL#.
s 0LEASECHECKANDCONFIRMMANUALSATTACHEDTOEACH
OPTIONALPARTSFORMORECONNECTIONDETAILS
s 9OUCANREFERTOTHISINSTALLATIONMANUALHOWTOREMOVE
ANDREATTACHTHEFRONTCOVER
s 0LEASEBECAREFULNOTTODAMAGELEADWIRESBYEDGEOF
PLATEWHENCONNECTINGTHEOPTIONALPARTS
s )FYOUCANNOTATTACHTHESIDEPLATEDUETOTHECONNECTIONCORDPLEASE
PRESSTHECONNECTINGCORDINTHEDIRECTIONTOTHEFRONTPANELTOlXIT
s "ESURETHATTHEHOOKSOFTHESIDECOVERlXEDINCERTAINLY/THERWISE
WATERLEAKAGEMAYOCCURANDTHISCAUSESSHORTCIRCUITORFAULTS
s 4HECONNECTINGCORDSHOULDNOTTOUCHTOSERVICEVALVEANDPIPES
ITBECOMESHIGHTEMPERATUREINHEATINGOPERATION
#.
#.
#.
WARNING
)-0/24!.4
)-0/24!.4
7IRELENGTH 7IREGAUGE
UPTO M MM
2
UPTOM MM
2
UPTOM MM
2
COVER
%ARTHTERMINAL
&USE#APACITY
!TIMEDELAYFUSE
Power Source And Operation Test
Power Source
Force-cooling operation How to remove the front cover How to Attach the Front Cover
Operation test
!FTERCOMPLETINGTHESERVICESWITCH
OPERATIONBESURETOKEEPTHESWITCH
PRESSEDFORONEORMORESECONDS
ANDSTOPTHEFORCECOOLINGOPERATION
s 7HENTHESERVICESWITCHOFTHEOUTDOORUNITISPRESSEDFOR
ORMORESECONDSTHEFORCECOOLINGOPERATIONSTARTS5SE
THISMODEWHENPERFORMINGTHEFAILUREDIAGNOSISORCOLLECTING
REFRIGERANTINTOTHEOUTDOORUNIT
3CREW
3ERVICESWITCH)FTHESWITCHISPRESSEDFORONE
ORMORESECONDSTHEFORCECOOLINGOPERATION
STARTS)FTHESWITCHISPRESSEDFORADDITIONAL
ONEORMORESECONDSTHEOPERATIONSTOPS
s $ONOTOPERATETHEUNITFORMORETHAN
MINUTES WHILE THE SPINDLE OF THE
SERVICEVALVEISCLOSED
1
2EMOVETHEFRONTPANEL
2
2EMOVETHElLTERS
3
!FTERREMOVINGTWOSCREWSPULLTHECENTEROFTHEFRONTCOVER
TOWARDSYOUANDRELEASETHECLAWS
4
0ULLTHESIDEFACESLOWERSECTIONS OFTHEFRONTCOVERTOWARDS
YOUASSHOWNINTHElGUREANDREMOVETHECOVER
s 0LEASEREMOVEANDATTACHTHEFRONTPANELBYBOTHHANDS
s !FTEROPENINGTHEFRONTPANELBYBOTHHANDS
1
5NDOTHERIGHTARMWHILEPUSHINGITINSIDE
2
3LIDETHEFRONTPANELTORIGHTASSHOWNINlGURE4HENREMOVE
WHILEPULLINGITTOFRONT
1
#HECKTHATTHEDRAINPANISSECURELYATTACHED
2
!FTERINSTALLINGTHEFRONTCOVERONTOTHEUNITHOOKTHREECLAWSAT
UPPERSIDEOFTHECOVERSECURELY4HENPUSHTHECENTEROFTHE
FRONTCOVERTOLOCKTHECLAWS
3
4IGHTENTHETWOSCREWS
4
)NSTALLTHElLTER
5
3LIDETHESHAFTSOFTHERIGHTANDLEFTARMSONTHEFRONTPANEL
ALONGTHESTEPSTOINSERTTHESHAFTSINTOTHEHOLESTILLTHEYSTOP
!FTERCHECKINGTHATTHESHAFTSARESECURELYINSERTEDCLOSETHE
PANEL
HOW TO REMOVE INDOOR UNIT
s 0USHUPTHE;053(=SECTIONSATTHEBOTTOMOFTHEINDOORUNITAND
PULLTHEBOTTOMPLATETOWARDSYOU4HENTHECLAWSARERELEASED
FROMTHESTATIONARYPLATE
4HE;053(=SECTIONSAREINDICATEDBYARROWSINTHERIGHTlGURE
;053(=MARKPOSITIONS
s 0LEASEMOUNTTHE/UTDOORUNITOFSTABLEGROUNDTOPREVENTVIBRATIONANDINCREASE
OFNOISELEVEL
s $ECIDETHELOCATIONFORPIPINGAFTERSORTINGOUTTHEDIFFERENTTYPESOFPIPEAVAILABLE
s 7HEN REMOVINGSIDE COVER PLEASE PULL THE HANDLE AFTER UNDOING THE HOOK BY
PULLINGITDOWNWARD2EINSTALLTHESIDECOVERINTHEREVERSEORDEROFTHEREMOVAL
s 5SEAPIPECUTTERTOCUTTHECOPPERPIPEANDREMOVEBURR
CAUTION
CAUTION
CAUTION
WARNING
WARNING
WARNING
CAUTION
< 10030C : >