Hitachi RAC-25WSPA - Safety Precautions; Installation Safety Guidelines; Shifting and Maintenance Safety Measures

OUTDOOR UNIT
INSTALLATION OFREFRIGERATING PIPES AND AIRREMOVAL
CONNECTION OF POWER CORD
FINAL STAGE OF INSTALLATION
L N C D
(A) (B)
30mm
10mm
10mm
70mm
10mm
50mm
10mm
50mm
D
C
CD
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
#OPPERPIPE
$IE
$IE
!
4RIMMINGTOOL
s 2EMOVEBURRANDJAGGEDEDGEWILLCAUSELEAKAGE
s 0OINTTHE SIDETO BETRIMMEDDOWNWARDSDURING TRIMMING TOPREVENTCOPPER
CHIPSFROMENTERINGTHEPIPE
&LARENUT
7RENCH
4ORQUE
WRENCH
Procedures of using Vacuum Pump for Air Removal
1
2
3
4
!SSHOWNIN RIGHT lGUREREMOVETHECAP
OFVALVECORE4HEN CONNECTTHE CHARGE
HOSE 2EMOVETHECAP OFVALVEHEAD
#ONNECTTHEVACUUMPUMPADAPTERTOTHE
VACUUMPUMPAND CONNECTTHE CHARGE
HOSETOTHEADAPTER
&ULLYTIGHTERTHE(ISHUTTLEOFTHEMANIFOLD
VALVEAND COMPLETELYUNSCREW THE,O
SHUTTLE 2UNTHE VACUUMPUMP FORABOUT
MINUTESTHEN COMPLETELYTIGHTEN THE
,OSHUTTLE ANDSWITCHOFF THEVACUUM
PUMP
s ,OOSENTHESPINDLEOF THESERVICEVALVE
WITHSMALL DIAMETERBY TURN AND
TIGHTENTHESPINDLE IMMEDIATELYAFTER 
TOSECONDS
s 2EMOVETHE CHARGINGHOSE FROMTHE
SERVICEVALVE
#OMPLETELYUNSCREWTHE SPINDLEOF THE
SERVICEVALVEATPLACESINANTICLOCKWISE
DIRECTIONTO ALLOWTHEFLOW OFREFRIGERANT
USING(EXAGONAL7RENCHKEY
4IGHTENTHE CAPOF VALVEHEAD#HECKTHE
CAPgSPERIPHERYIFTHEREISANYGASLEAKAGE
4HETASKISTHENCOMPLETED
0LEASEUSEGASLEAKAGEDETECTORTOCHECKIFLEAKAGE
OCCURSAT CONNECTIONOF &LARENUT ASSHOWNON THE
RIGHT
)FGASLEAKAGEOCCURSFURTHERTIGHTENTHECONNECTION
TOSTOPLEAKAGE
7HENTHEMETERREACHES+0A
CM(GDURING PUMPING FULLY
TIGHTENTHESHUTTLE
-ETERSHOWING
PRESSURE
#HARGE
HOSE
2!
-ANIFOLD
6ACUUM
PUMP
6ACUUM
PUMP
ADAPTER
7HENPUMPINGSTARTS SLIGHTLY
LOOSENTHEmARENUTTOCHECKOF
AIRSUCKEDIN4HEN TIGHTEN THE
mARENUT
4HEBODYOFSERVICE
VALVE
#APOF
VALVECORE
(EXAGONAL
WRENCH+EY
#APOFVALVE
HEAD
#APOFVALVE
HEAD
#LOSED
VALVE
6ALVE
6ALVE
'ASLEAKAGEINSPECTION
WARNING
s 4()3!00,)!.#%-534"%
%!24(%$
Procedures of Wiring
)NDOOR5NIT
)NDOOR5NIT
'REEN9ELLOW
'REEN9ELLOW 'REEN9ELLOW
3TRIPWIRES
#ONNECTING#ORD
!#6
(Z
#ONNECTINGCORD
#ONNECTINGCORD
!FTERREMOVETHESCREW
ANDTERMINAL COVER AND
PUTTHECONNECTING CORDS
ANDlXTHETERMINALCOVER
WITHSCREW
%ARTH
$ETAILOFCUTTINGTHECONNECTINGCORD
OR

/UTDOOR5NIT
/UTDOOR5NIT
Method to remove the low cover
s 4HENAKEDPARTOFTHEWIRECORESHOULDBEMMlXITTOTHETERMINALTIGHTLY4HEN
TRYTOPULLTHEINDIVIDUALWIRETOCHECKIFTHECONTACTISTIGHT)MPROPERINSERTIONMAY
BURNTHETERMINAL
s "ESURETOUSEONLYWIRESPECIlEDFORTHEUSEOFAIRCONDITIONER
s 0LEASEREFERTOTHE MANUALFORWIRE CONNECTIONAND THEWIRING TECHNIQUE SHOULD
MEETTHESTANDARDOFTHEELECTRICALINSTALLATION
s 4HEREISAN!#VOLTAGEDROPBETWEENTHE,.TERMINALIFTHEPOWERISON4HEREFORE
BESURETOREMOVETHEPLUGFROMITSSOCKET
s ,EAVESOME SPACE INTHE CONNECTINGCORD FORMAINTENANCE
PURPOSEANDBESURETOSECUREITWITHTHECORDBAND
s 3ECURETHECONNECTING CORDALONG THECOATED PARTOF THEWIRE
USINGTHE CORDBAND$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
1
2
s 0ULLAT THE
1
AND
2
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

1
#ARD+EY#.

2
(,).+#.

3
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
)-0/24!.4
7IRELENGTH 7IREGAUGE
UPTO
M MM
2
UPTOM MM
2
UPTOM MM
2
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
1
 2EMOVETHEFRONTPANEL
2
 2EMOVETHElLTERS
3
!FTERREMOVINGTWOSCREWSPULLTHECENTEROFTHEFRONTCOVER
TOWARDSYOUANDRELEASETHECLAWS
4
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
1
 5NDOTHERIGHTARMWHILEPUSHINGITINSIDE
2
3LIDETHEFRONTPANELTORIGHTASSHOWNINlGURE4HENREMOVE
WHILEPULLINGITTOFRONT
1
 #HECKTHATTHEDRAINPANISSECURELYATTACHED
2
!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
3
4IGHTENTHETWOSCREWS
4
 )NSTALLTHElLTER
5
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
CAUTION
CAUTION
WARNING
WARNING
WARNING
CAUTION
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