Download Mitsubishi Electric MXZ-3C54VA Installation manual

Split-type Air-Conditioner
MXZ-3C54VA
MXZ-4C71VA
Installation Manual
ForINSTALLER
• Thismanualonlydescribestheinstallationofoutdoorunit.
Wheninstallingtheindoorunit,refertotheinstallationmanualofindoorunit.
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English
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ENGLISH
CONTENTS
. BEFOREINSTALLATION............................................................ 2. OUTDOORUNITINSTALLATION............................................... 4
3. FLARINGWORKANDPIPECONNECTION............................... 4
4. PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN......... 5
5. RELOCATIONANDMAINTENANCE.......................................... 6
Required Tools for Installation
Phillipsscrewdriver
FlaretoolforR40A
Level
GaugemanifoldforR40A
Scale
VacuumpumpforR40A
Utilityknifeorscissors
ChargehoseforR40A
Torquewrench
Pipecutterwithreamer
Wrench(orspanner)
4mmhexagonalwrench
1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspecifiedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
n Do not install the unit by yourself (user).
Incompleteinstallationcouldcausefireorelectricshock,injuryduetothe
unitfalling,orleakageofwater.Consultthedealerfromwhomyoupurchasedtheunitoraqualifiedinstaller.
n Perform the installation securely referring to the installation manual.
Incompleteinstallationcouldcausefireorelectricshock,injuryduetothe
unitfalling,orleakageofwater.
n When installing the unit, use appropriate protective equipment and
tools for safety.
Failuretodosocouldcauseinjury.
n Install the unit securely in a place which can bear the weight of the unit.
If the installation location cannot bear the weight of the unit, the unit
couldfallcausinginjury.
n Perform electrical work according to the installation manual and be
sure to use an exclusive circuit. Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufficient or there is incomplete
electricalwork,itcouldresultinafireoranelectricshock.
n Do not damage the wires by applying excessive pressure with parts
or screws.
Damagedwirescouldcausefire.
n Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failuretodosocouldcauseelectricshock.
n Usethespecifiedwirestoconnecttheindoorandoutdoorunitssecurelyandattachthewiresfirmlytotheterminalblockconnecting
sections so the stress of the wires is not applied to the sections.
Incompleteconnectingandsecuringcouldcausefire.
n Donotinstalltheunitinaplacewhereinflammablegasmayleak.
Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcause
anexplosion.
n Do not use intermediate connection of the power cord or the extension cord and do not connect many devices to one AC outlet.
Itcouldcauseafireoranelectricshockduetodefectivecontact,defectiveinsulation,exceedingthepermissiblecurrent,etc.
n Besuretousethepartsprovidedorspecifiedpartsfortheinstallation work.
Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterdue
toafire,anelectricshock,theunitfalling,etc.
n When plugging the power supply plug into the outlet, make sure
that there is no dust, clogging, or loose parts in both the outlet and
the plug. Make sure that the power supply plug is pushed completely into the outlet.
Ifthereisdust,clogging,orloosepartsonthepowersupplyplugorthe
outlet,itcouldcauseelectricshockorfire.Ifloosepartsarefoundonthe
powersupplyplug,replaceit.
CAUTION
n Attach the electrical cover to the indoor unit and the service panel
to the outdoor unit securely.
Iftheelectricalcoveroftheindoorunitand/ortheservicepanelofthe
outdoor unit are not attached securely, it could result in a fire or an
electricshockduetodust,water,etc.
n When installing, relocating, or servicing the unit, make sure that
no substance other than the specified refrigerant (R410A) enters
the refrigerant circuit.
Any presence of foreign substance such as air can cause abnormal
pressureriseandmayresultinexplosionorinjury.Theuseofanyrefrigerantotherthanthatspecifiedforthesystemwillcausemechanical
failure, system malfunction, or unit breakdown. In the worst case, this
couldleadtoaseriousimpedimenttosecuringproductsafety.
n Do not discharge the refrigerant into the atmosphere. If refrigerant
leaks during installation, ventilate the room.
Ifrefrigerantcomesincontactwithafire,harmfulgascouldbegenerated.
Refrigerantleakagemaycausesuffocation.Ventilatetheroom.
n Check that the refrigerant gas does not leak after installation has
been completed.
Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeflame
of a fan heater, space heater, stove, etc., harmful substances will be
generated.
n Use appropriate tools and piping materials for installation.
ThepressureofR40Ais.6timesmorethanR22.Notusingappropriatetoolsormaterialsandincompleteinstallationcouldcausethepipes
toburstorinjury.
n When pumping down the refrigerant, stop the compressor before
disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is runningandthestopvalveisopen,aircouldbedrawninandthepressure
in the refrigeration cycle could become abnormally high. This could
causethepipestoburstorinjury.
n When installing the unit, securely connect the refrigerant pipes
before starting the compressor.
Ifthecompressorisstartedbeforetherefrigerantpipesareconnected
andwhenthestopvalveisopen,aircouldbedrawninandthepressure in the refrigeration cycle could become abnormally high. This
couldcausethepipestoburstorinjury.
n Fastenaflarenutwithatorquewrenchasspecifiedinthismanual.
Iffastenedtootight,aflarenutmaybreakafteralongperiodandcause
refrigerantleakage.
n The unit shall be installed in accordance with national wiring regulations.
n Earth the unit correctly.
Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortelephoneearth.Defectiveearthingcouldcauseelectricshock.
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
n Install an earth leakage breaker depending on the installation place.
Ifanearthleakagebreakerisnotinstalled,itcouldcauseelectricshock.
n Perform the drainage/piping work securely according to the installation manual.
Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromthe
unit,soakinganddamaginghouseholdgoods.
n Donottouchtheairinletorthealuminumfinsoftheoutdoorunit.
Thiscouldcauseinjury.
n Do not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it
could cause a malfunction, smoke emission, or fire. Also, advise user
tokeeptheareaaroundtheunitclean.
1-2. SPECIFICATIONS
Powersupply*
Model
MXZ-3C54VA
MXZ-4C7VA
Wirespecifications*2
Pipelengthandheightdifference*3,*4,*5,*6,*7,*8
Max.no.ofbends
Max.pipelength
Rated Fre- Breaker
RefrigerantadjustIndoor/outdoor
Max.height
perindoorunit/
Powersupply
perindoorunit/
mentA*0
Voltage quency capacity
connectingwire
difference*9
formultisystem
formulti-system
25m/50m
25/50
4-core
230V 50Hz
25A 3-core2.5mm2
5m
20g/m
.0/.5mm2
25m/60m
25/60
* Connect to the power switch which has a gap of 3 mm or more when
opentointerruptthesourcepowerphase.(Whenthepowerswitchisshut
off,itmustinterruptallphases.)
*2 Use wires in conformity with design 60245 IEC 57. Use the indoor/outdoorconnectingwireinconformitywiththewirespecificationsspecifiedin
theinstallationmanualoftheindoorunit.
*3 Neverusepipeswiththicknesslessthanspecified.Thepressureresistancewillbeinsufficient.
*4 Useacopperpipeoracopper-alloyseamlesspipe.
*5 Becarefulnottocrushorbendthepipeduringpipebending.
*6 Refrigerantpipebendingradiusmustbe00mmormore.
*7 Insulationmaterial:Heatresistingfoamplastic0.045specificgravity
*8 Besuretousetheinsulationofspecifiedthickness.Excessivethickness
may cause incorrect installation of the indoor unit and insufficient thicknessmaycausedewdrippage.
*9 Iftheoutdoorunitisinstalledhigherthantheindoorunit,max.height
differenceisreducedto0m.
*0Ifpipelengthexceeds40m,additionalrefrigerant(R40A)chargeisrequired.(Noadditionalchargeisrequiredforpipelengthlessthan40m.)
Additionalrefrigerant=A×(pipelength(m)-40)
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1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTS
Ifthediameterofconnectionpipedoesnotmatchtheportsizeofoutdoorunit,useoptionaldifferent-diameterjointsaccordingtothefollowingtable.
(Unit:mm(inch))
MXZ3C54VA
Portsizeofoutdoorunit
MXZLiquid/Gas
4C7VA
-
AUNIT
6.35(/4)/2.7(/2)
A-CUNIT
B-DUNIT
6.35(/4)/9.52(3/8)
Optionaldifferent-diameterjoints(portsizeofoutdoorunit→diameterofconnectionpipe)
6.35(/4)→9.52(3/8):PAC-493PI
9.52(3/8)→2.7(/2):MAC-454JP
9.52(3/8)→5.88(5/8):PAC-SG76RJ
2.7(/2)→9.52(3/8):MAC-A455JP
2.7(/2)→5.88(5/8):MAC-A456JP
Refertotheinstallationmanualofindoorunitforthediameterofconnectionpipeofindoorunit.
1-4. SELECTING THE INSTALLATION LOCATION
•
•
•
•
•
Whereitisnotexposedtostrongwind.
Whereairflowisgoodanddustless.
Whererainordirectsunshinecanbeavoidedasmuchaspossible.
Whereneighboursarenotannoyedbyoperationsoundorhotair.
Whererigidwallorsupportisavailabletopreventtheincreaseofoperationsoundorvibration.
• Wherethereisnoriskofcombustiblegasleakage.
• Wheninstallingtheunit,besuretosecuretheunitlegs.
• Whereitisatleast3mawayfromtheantennaofTVsetorradio.OperationoftheairconditionermayinterferewithradioorTVreceptionin
areaswherereceptionisweak.Anamplifiermayberequiredfortheaffecteddevice.
• Installtheunithorizontally.
• Please install it in an area not affected by snowfall or blowing snow.
Inareaswithheavysnow,pleaseinstallacanopy,apedestaland/or
somebaffleboards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce
vibrationtransmittedfromthere.
FREE SPACE REQUIRED AROUND OUTDOOR UNIT
1. Obstacles above
When there is no obstacle in front
and on the sides of the unit, it is allowed to install the unit where an
obstacle is above the unit only if the 500ormore
spaceshowninthefigureisprovided.
00ormore
Note:
Whenoperatingtheairconditionerinlowoutsidetemperature,besure
tofollowtheinstructionsdescribedbelow.
• Neverinstalltheoutdoorunitinaplacewhereitsairinlet/outletside
maybeexposeddirectlytowind.
• Topreventexposuretowind,installtheoutdoorunitwithitsairinlet
sidefacingthewall.
• Topreventexposuretowind,itisrecommendedtoinstallabaffle
boardontheairoutletsideoftheoutdoorunit.
Avoidthefollowingplacesforinstallationwhereairconditionertrouble
isliabletooccur.
• Whereflammablegascouldleak.
• Wherethereismuchmachineoil.
• Saltyplacessuchastheseaside.
• Wheresulfidegasisgeneratedsuchasahotspring.
• Wherethereishigh-frequencyorwirelessequipment.
• WherethereisemissionofhighlevelsofVOCs,includingphthalate
compounds,formaldehyde,etc.,whichmaycausechemicalcracking.
2. Front (blowing) side open
As long as space indicated
in the figure is provided, it
is allowed to install the unit
where obstacles are behind
and on the sides of the unit.
(Noobstacleabovetheunit)
200ormore
350ormore
00ormore
3. Obstacles in front (blowing) only
4. Obstacles in front and behind
Whenthereisanobstacleinfrontof
theunitasshowninthefigure,open
space above, behind, and on the
sidesoftheunitisrequired.
500ormore
Theunitcanbeusedbyattachinganoptionaloutdoor
blowingguide(MAC-856SG)
(butbothsidesandtopare
open).
00ormore
500ormore
Blowingguide(MAC-856SG)
6. Service space
5. Obstacles in front, behind and on side(s)
• Wheninstallingtheunitinanareathatisenclosedwithwallssuch
asaverandah,besuretohaveenoughspaceasshownbelow.
In this case, the air conditioning capacity and power consumption
mightdeteriorate.
• Whenthereisalackofairfloworthereisapossibilityofbecoming
shortcycle,installanoutletguideandmakesurethereisenough
spacebehindoftheunit.
• Wheninstallingtwoormoreunits,donotinstalltheunitsinfrontor
behindeachother.
Providespaceforserviceandmaintenanceasshowninthefigure.
Servicespace
00ormore
500ormore
200ormore
00ormore
350ormore
00ormore
500ormore
Heightoftheobstacleis200orless
500ormore
350ormore
350ormore
(Unit:mm)
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1-5. INSTALLATION DIAGRAM
Aftertheleaktest,applyinsulatingmaterialtightlysothatthereis
nogap.
Whenthepipingistobeattachedtoawallcontainingmetals
(tinplated)ormetalnetting,use
achemicallytreatedwooden
piece20mmorthickerbetween
thewallandthepipingorwrap7
to8turnsofinsulationvinyltape
aroundthepiping.
Touseexistingpiping,perform
COOLoperationfor30minutes
andpumpdownbeforeremoving
theoldairconditioner.Remake
flareaccordingtothedimension
fornewrefrigerant.
Openasarule
Morethan500mm
ifthefrontandboth
sidesareopen
Morethan00mm
Morethan200mmifthereare
obstaclestobothsides
Morethan
00mm
ACCESSORIES
Checkthefollowingpartsbeforeinstallation.
() Drainsocket
(2) Draincap
2
PARTS TO BE PROVIDED AT YOUR SITE
(A)
(B)
(C)
(D)
(E)
Powersupplycord*
Indoor/outdoorunitconnectingwire*
Extensionpipe
Wallholecover
Pipingtape
Extensiondrainhose
(F) (orsoftPVChose,5mminner
diameterorhardPVCpipeVP6)
(G) Refrigerationoil
(H)
(I)
(J)
(K)
Putty
Pipefixingband
Fixingscrewfor(I)
Wallholesleeve
SoftPVChose,5mminnerdi(L) ameterorhardPVCpipeVP6for
drainsocket()
Little
amount
2to7
2to7
* Note:
Place indoor/outdoor unit connecting wire (B) and
power supply cord (A) at least m away from the
TVantennawire.
Openasarule
Morethan500mmiftheback,
bothsidesandtopareopen
The“Q’ty”for(B)to(K)intheabovetableisquantitytobeusedperindoorunit.
Morethan350mm
IMPORTANT NOTES
TocomplywiththerequirementsofAustralianstandardAS/NZS3000electricalinstallations(wiring
rules),theelectricalwiringrequiredbetweentheindoorandoutdoorunitsmustbeinstalledbya
licencedelectricalcontractor.
Outdoor unit installation
Unitsshouldbeinstalledbylicensedcontractor
accordingtolocalcoderequirements.
835
396
Airinlet
36
500
Airinlet
330
66
Airoutlet
4-0×2Ovalholes
(Unit:mm)
1-6. DRAIN PIPING FOR OUTDOOR UNIT
Pleaseperformthedrainpipingworkonlywhendrainingfromoneplace.
)Chooseoneholetodischargedrainandinstallthedrainsocket()tothehole.
2)Closetherestoftheholeswiththedraincaps(2).
3)ConnectthesoftPVChose(L)of5mmintheinsidediameteronthemarketwiththedrainsocket()andleaddrain.
Note:
Installtheunithorizontally.
Donotusethedrainsocket()andthedraincaps(2)inthecoldregions.Drainmayfreezeanditmakesthefanstop.
Theoutdoorunitproducescondensateduringtheheatingoperation.Selecttheinstallationplacetoensuretopreventtheoutdoorunitand/orthegrounds
frombeingwetbydrainwaterordamagedbyfrozendrainwater.
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2. OUTDOOR UNIT INSTALLATION
2-1. CONNECTING WIRES FOR OUTDOOR UNIT
)Removetheservicepanel.
2)Loosenterminalscrew,andconnectindoor/outdoorunitconnectingwire(B)from
theindoorunitcorrectlyontheterminalblock.Becarefulnottomakemis-wiring.
Fixthewiretotheterminalblocksecurelysothatnopartofitscoreisappeared,
andnoexternalforceisconveyedtotheconnectingsectionoftheterminalblock.
3)Firmlytightentheterminalscrewstopreventthemfromloosening.Aftertightening,pullthewireslightlytoconfirmthattheydonotmove.
4)Perform2)and3)foreachindoorunit.
5)Connectpowersupplycord(A).
6)Fixindoor/outdoorunitconnectingwire(B)andpowersupplycord(A)withthe
cableclamps.
7)Closetheservicepanelsecurely.Makesurethat3-2.PIPECONNECTIONis
completed.
• Aftermakingconnectionsbetweenbothpowersupplycord(A)andindoor/outdoorunitconnectingwire(B),besuretofixbothcableandwirewithcable
clamps.
Terminalblockforpowersupply
4C7VA
Servicepanel
<OUTDOORUNIT>
Indoor/outdoorunit
connectingwire
Terminalblock
Terminalblockfor
powersupply
Terminalblock
5mm
35mm
Leadwire
Terminalblock
POWERSUPPLY
~/N230V50Hz
Terminalblock
<INDOORUNIT>
• Be sure to attach each screw to its correspondent terminal
whensecuringthecordand/orthewiretotheterminalblock.
• Makeearthwirealittlelongerthanothers.(Morethan35mm)
• Forfutureservicing,giveextralengthtotheconnectingwires.
Dunitisfor4C7VAonly
3. FLARING WORK AND PIPE CONNECTION
3-1. FLARING WORK
)Cutthecopperpipecorrectlywithpipecutter.(Fig.,2)
2)Completelyremoveallburrsfromthecutcrosssectionofpipe.(Fig.3)
• Aimthecopperpipedownwardwhileremovingburrstopreventburrsfrom
droppinginthepipe.
3)Remove flare nuts attached to indoor and outdoor units, then put them on
pipehavingcompletedburrremoval.(Notpossibletoputthemonafterflaring
work.)
4)Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in
thetable.SelectAmmfromthetableaccordingtothetoolselected.
5)Check
• ComparetheflaredworkwithFig.6.
• Ifflareisnotedtobedefective,cutofftheflaredsectionanddoflaringwork
again.
A(mm)
Pipediameter Nut Clutch
Clutch Wingnut
(mm)
(mm) typetool typetool typetool
forR40A forR22
forR22
ø6.35(/4”) 7
.5to2.0
ø9.52(3/8”) 22
0to0.5 .0to.5
ø2.7(/2”) 26
2.0to2.5
ø5.88(5/8”) 29
TiltedUnevenBurred
Fig.
3.7to7.7
34.3to4.2
49.0to56.4
73.5to78.4
Copperpipe
Sparereamer
Pipecutter
Clutchtype
Fig.3
kgf•cm
40to80
350to420
500to575
750to800
Fig.2
Flaringtool
Burr
Tighteningtorque
N•m
Nogood
Good
Copper
pipe
Wingnuttype
Fig.4
Smoothall
around
Insideisshiningwithoutany
scratches.
Copperpipe
Die
Evenlength
allaround
Flarenut
3-2. PIPE CONNECTION
Fig.5
Fig.6
1)Applyathincoatofrefrigerationoil(G)totheflaredendsofthepipesand
thepipeconnectionsoftheoutdoorunit.
2)Alignthecenterofthepipewiththatofthepipeconnectionsoftheoutdoor
unit,thenhandtightentheflarenut3to4turns.
WARNING
3)Tightentheflarenutwithatorquewrenchasspecifiedinthetable.
•Over-tighteningmaycausedamagetotheflarenut,resultinginrefrigerant When installing the unit, securely
leakage.
connect the refrigerant pipes before
•Besuretowrapinsulationaroundthepiping.Directcontactwiththebare starting the compressor.
pipingmayresultinburnsorfrostbite.
3-3. INSULATION AND TAPING
)Coverpipingjointswithpipecover.
2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.
CAUTION
3)Usingpipingtape(E),applytapingstartingfromtheentryofoutdoorunit.
• Stoptheendofpipingtape(E)withtape(withadhesiveagentattached).
When there are the ports which are
• Whenpipinghavetobearrangedthroughaboveceiling,closetorwhere not used, make sure their nuts are
thetemperatureandhumidityarehigh,windadditionalcommerciallysold tightened securely.
insulationtopreventcondensation.
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4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
4-1. PURGING PROCEDURES AND LEAK TEST
)Removeserviceportcapofstopvalveonthesideoftheoutdoorunit
gaspipe.(Thestopvalvesarefullyclosedandcoveredincapsin
theirinitialstate.)
2)Connectgaugemanifoldvalveandvacuumpumptoserviceportof
stopvalveonthegaspipesideoftheoutdoorunit.
3)Runthevacuumpump.(Vacuumizeformorethan5minutes.)
4)Checkthevacuumwithgaugemanifoldvalve,thenclosegauge
manifoldvalve,andstopthevacuumpump.
5)Leaveasitisforoneortwominutes.Makesurethepointerofgauge
manifoldvalveremainsinthesameposition.Confirmthatpressure
gaugeshows-0.0MPa[Gauge](-760mmHg).
6)Removegaugemanifoldvalvequicklyfromserviceportofstopvalve.
7)Fullyopenallstopvalvesonthegaspipeandtheliquidpipe.Operatingwithoutfullyopeninglowerstheperformanceandthiscauses
trouble.
8)Referto-2.,andchargetheprescribedamountofrefrigerantif
needed.Besuretochargeslowlywithliquidrefrigerant.Otherwise,
compositionoftherefrigerantinthesystemmaybechangedand
affectperformanceoftheairconditioner.
9)Tightencapofserviceporttoobtaintheinitialstatus.
0)Leaktest
Stopvalvecap
(Torque9.6to
29.4N•m,200
to300kgf•cm)
*4to5turns
*Close
Compoundpressure
–0.0MPa gauge(forR40A)
(–760mmHg)
Pressuregauge
(forR40A)
*Open
Gaugemanifold
valve(forR40A)
Serviceportcap
(Torque3.7to
7.7N•m,40to
80kgf•cm)
Stopvalve
forGAS
Precautionswhenusing
thecontrolvalve
Close
A
Open
Control
valve
HandleHigh
Handle
Low
Hexagonalwrench
Body
Stopvalve
forLIQUID
Chargehose
(forR40A)
Vacuumpump
(forR40A)
Whenattachingthecontrolvalveto
theserviceport,valvecoremaydeformorloosenifexcesspressureis
applied.Thismaycausegasleak.
Serviceport
Whenattachingthecontrolvalveto
theserviceport,makesurethatthe
Chargehose valvecoreisinclosedposition,and
then tighten partA. Do not tighten
(forR40A)
partAorturnthebodywhenvalve
coreisinopenposition.
4-2. GAS CHARGE
Performgaschargetounit.
)Connectgascylindertotheserviceportofstopvalve.
2)Performairpurgeofthepipe(orhose)comingfromrefrigerantgascylinder.
3)Replenish specified amount of the refrigerant, while operating the air conditionerforcooling.
Note:
Incaseofaddingrefrigerant,complywiththequantityspecifiedfortherefrigeratingcycle.
CAUTION:
Whenchargingtherefrigerantsystemwithadditionalrefrigerant,besuretouse
liquid refrigerant.Adding gas refrigerant may change the composition of the
refrigerantinthesystemandaffectnormaloperationoftheairconditioner.Also,
chargetheliquidrefrigerantslowly,otherwisethecompressorwillbelocked.
To maintain the high pressure of the gas cylinder, warm the gas cylinder with
warmwater(under40°C)duringcoldseason.Butneverusenakedfireorsteam.
Stopvalve
Liquid
pipe
Union
Union
Indoor
unit
Union
Union
Refrigerantgas
cylinder
operatingvalve
(forR40A)
Outdoor
unit
Stopvalvewith
Gas
serviceport
pipe
Gaugemanifold
valve(forR40A)
*Dunitisfor
4C7VAonly.
Chargehose
(forR40A)
RefrigerantgascylinderforR40Awithsiphon
Refrigerant(liquid)
Electronicscaleforrefrigerantcharging
4-3. REMOVING THE MAINTENANCE PANEL
ThesettingofDipSwitchontheoutdoorcontrollerboardcanbechanged
withoutremovingthefrontpanel.
Followtheproceduresbelowtoremovethemaintenancepanelandset
theDipSwitch.
1)Removescrew(s)whichfixthemaintenancepanel.
2)Removethemaintenancepanel,andperformnecessarysettings.
3)Installthemaintenancepanel.
Note:
Makesuretofixthemaintenancepanelsecurely.Incompleteinstallation
couldcausemalfunction.
maintenancepanel
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4-4. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
• Descriptionofthefunction:
With this function, once the operation mode is locked to either COOL/DRY
modeorHEATmode,theairconditioneroperatesinthatmodeonly.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainabout
thisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
[How to lock the operation mode]
)Be sure toturnoffthemain power fortheairconditioner beforemaking the
setting.
2)Setthe“2”ofSWontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)TolocktheoperationmodeinCOOL/DRYmode,setthe“”ofSWonthe
outdoorcontrollerboardtoOFF.TolocktheoperationinHEATmode,setthe
sameswitchtoON.
4)Turnonthemainpowerfortheairconditioner.
COOL/DRY
HEAT
4-5. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT
• Descriptionofthefunction:
Withthisfunction,theoperatingnoiseoftheoutdoorunitcanbeloweredbyreducingtheoperationload,forexample,duringnighttimeinCOOLmode.
However,pleasenotethatthecoolingandheatingcapacitymaylowerifthisfunctionisactivated.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
[How to lower the operating noise]
)Be sure toturnoffthemain power fortheairconditioner beforemaking the
setting.
2)Setthe“3”ofSWontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)Turnonthemainpowerfortheairconditioner.
Lowertheoperatingnoise
4-6. TEST RUN
• Testrunsoftheindoorunitsshouldbeperformedindividually.Seetheinstallationmanualcomingwiththeindoorunit,andmakesurealltheunitsoperateproperly.
• Ifthetestrunwithalltheunitsisperformedatonce,possibleerroneousconnectionsoftherefrigerantpipesandtheindoor/outdoorunitconnectingwires
cannotbedetected.Thus,besuretoperformthetestrunonebyone.
Makesurethatthefollowingisdone.
• Powerissuppliedtotheunit.
• Stopvalvesareopen.
About the restart protective mechanism
Oncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnotoperatefor3minutestoprotecttheairconditioner.
4-7. EXPLANATION TO THE USER
• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairfilters,howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.).
• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.
5. RELOCATION AND MAINTENANCE
5-1. PUMPING DOWN
Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmosphere.
)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.
2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.
3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0
MPa[Gauge](0kgf/cm2).
4)StarttheemergencyCOOLoperationonalltheindoorunits.
TostarttheemergencyoperationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After5seconds,connectthepower
supplyplugand/orturnonthebreaker,andthenpresstheE.O.SWonce.(TheemergencyCOOLoperationcanbeperformedcontinuouslyforupto30
minutes.)
5)Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm2).
6)StoptheemergencyCOOLoperation.
PresstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.
WARNING
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
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HEADOFFICE:TOKYOBLDG.,2-7-3,MARUNOUCHI,CHIYODA-KU,TOKYO00-830,JAPAN
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