Installation Manual ForINSTALLER• Thismanualonlydescribestheinstallationofoutdoorunit. Wheninstallingtheindoorunit,refertotheinstallationmanualofindoorunit.

Split-type Air-ConditionerMXZ-4D80VAMXZ-5D100VA

English

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1. BEFORE INSTALLATION1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.• Besuretoobservethewarningsandcautionsspecifiedhereastheyincludeimportantitemsrelatedtosafety.• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.

1-2. SPECIFICATIONS

CAUTION (Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)

n Do not install the unit by yourself (user). Incompleteinstallationcouldcausefireorelectricshock,injuryduetothe

unitfalling,orleakageofwater.Consultthedealerfromwhomyoupur-chasedtheunitoraqualifiedinstaller.

n Perform the installation securely referring to the installation manual. Incomplete installationcouldcausefire,electricshock, 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 Electrical work should be performed by a qualified, experienced elec-

trician, according to the installation manual. Be sure to use an exclu-sive circuit. Do not connect other electrical appliances to the circuit.

If the capacity of thepower circuit is insufficient or there is incompleteelectricalwork,itcouldresultinafireoranelectricshock.

n Do not damage the wires by applying excessive pressure with parts or screws.

Damagedwirescouldcausefireorelectricshock.n Be sure to cut off the main power in case of setting up the indoor P.C.

board or wiring works. Failuretodosocouldcauseelectricshock.n Use the specified wires to connect the indoor and outdoor units se-

curely and attach the wires firmly to the terminal block connecting sections so the stress of the wires is not applied to the sections. Do not extend the wires, or use intermediate connection.

Incompleteconnectingandsecuringcouldcausefire.n Do not install the unit in a place where inflammable gas may leak. Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcause

anexplosion.n Do not use intermediate connection of the power cord or the exten-

sion cord and do not connect many devices to one AC outlet. Itcouldcauseafireoranelectricshockduetodefectivecontact,defec-

tiveinsulation,exceedingthepermissiblecurrent,etc.n Be sure to use the parts provided or specified parts for the installa-

tion 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 complete-ly into the outlet.

Ifthereisdust,clogging,orloosepartsonthepowersupplyplugortheoutlet,itcouldcauseelectricshockorfire.Ifloosepartsarefoundonthepowersupplyplug,replaceit.

n Attach the electrical cover to the indoor unit and the service panel to the outdoor unit securely.

Iftheelectricalcoveroftheindoorunitand/ortheservicepaneloftheoutdoor unit arenot attached securely, it could result in a fireor anelectricshockduetodust,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 abnormalpressureriseandmayresultinexplosionorinjury.Theuseofanyre-frigerantotherthanthatspecifiedforthesystemwillcausemechanicalfailure,systemmalfunction,orunitbreakdown. In theworstcase, thiscouldleadtoaseriousimpedimenttosecuringproductsafety.

n Do not discharge the refrigerant into the atmosphere. If refrigerant leaks during installation, ventilate the room.

Ifrefrigerantcomesincontactwithafire,harmfulgascouldbegenerated.n Check that the refrigerant gas does not leak after installation has

been completed. Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeflame

ofa fanheater, spaceheater, stove,etc.,harmful substanceswill begenerated.

n Use appropriate tools and piping materials for installation. ThepressureofR4�0Ais�.6timesmorethanR22.Notusingappropri-

atetoolsormaterialsandincompleteinstallationcouldcausethepipestoburstorinjury.

n When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.

If the refrigerantpipesaredisconnectedwhile thecompressor is run-ningandthestopvalveisopen,aircouldbedrawninandthepressurein the refrigeration cycle could become abnormally high. This couldcausethepipestoburstorinjury.

n When installing the unit, securely connect the refrigerant pipes before starting the compressor.

Ifthecompressorisstartedbeforetherefrigerantpipesareconnectedandwhenthestopvalve isopen,aircouldbedrawninandthepres-sure in the refrigeration cycle couldbecomeabnormally high.Thiscouldcausethepipestoburstorinjury.

n Fasten a flare nut with a torque wrench as specified in this manual. Iffastenedtootight,aflarenutmaybreakafteralongperiodandcause

refrigerantleakage.n The unit shall be installed in accordance with national wiring regu-

lations. n Earth the unit correctly. Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortel-

ephoneearth.Defectiveearthingcouldcauseelectricshock.n Be sure to install an earth leakage breaker. Failuretoinstallanearthleakagebreakermayresult inelectricshock

orfire.

n Perform the drainage/piping work securely according to the installa-tion manual.

If there isdefect in thedrainage/pipingwork,watercoulddropfromtheunit,soakinganddamaginghouseholdgoods.

n Do not touch the air inlet or the aluminum fins of the outdoor unit. 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

couldcauseamalfunction,smokeemission,orfire.Also,adviseusertokeeptheareaaroundtheunitclean.

WARNING (Couldleadtodeath,seriousinjury,etc.)

*� Connect to the power switch which has a gap of 3 mm or more whenopentointerruptthesourcepowerphase.(Whenthepowerswitchisshutoff,itmustinterruptallphases.)

*2 Use wires in conformity with design 60245 IEC 57. Use the indoor/out-doorconnectingwireinconformitywiththewirespecificationsspecifiedintheinstallationmanualoftheindoorunit.

*3 Neverusepipeswiththickness lessthanspecified.Thepressureresist-ancewillbeinsufficient.

*4 Useacopperpipeoracopper-alloyseamlesspipe.*5 Becarefulnottocrushorbendthepipeduringpipebending.

*6 Refrigerantpipebendingradiusmustbe�00mmormore.*7 Insulationmaterial:Heatresistingfoamplastic0.045specificgravity*8 Besuretousetheinsulationofspecifiedthickness.Excessivethickness

maycause incorrect installationof the indoorunit and insufficient thick-nessmaycausedewdrippage.

*9 Iftheoutdoorunitisinstalledhigherthantheindoorunit,max.heightdifferenceisreducedto�0m.

*�0Ifpipelengthexceeds40m,additionalrefrigerant(R4�0A)chargeisre-quired.(Noadditionalchargeisrequiredforpipelengthlessthan40m.)

Additionalrefrigerant=A×(pipelength(m)-40)

Required Tools for InstallationPhillipsscrewdriverLevelScaleUtilityknifeorscissorsTorquewrenchWrench(orspanner)4mmhexagonalwrench

FlaretoolforR4�0AGaugemanifoldforR4�0AVacuumpumpforR4�0AChargehoseforR4�0APipecutterwithreamer

EN

GLI

SH CONTENTS

�.BEFOREINSTALLATION............................................................ �2.OUTDOORUNITINSTALLATION............................................... 43.FLARINGWORKANDPIPECONNECTION............................... 54.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN......... 55.RELOCATIONANDMAINTENANCE.......................................... 7

Model

Powersupply*� Wirespecifications*2 Pipelengthandheightdifference*3,*4,*5,*6,*7,*8

RatedVoltage

Fre-quency

Breakercapacity Powersupply Indoor/outdoor

connectingwire

Max.pipelengthperindoorunit/formulti-system

Max.heightdifference*9

Max.no.ofbendsperindoorunit/formultisystem

Refrigerantadjust-mentA*�0

MXZ-4D80VA230V 50Hz 25A 3-core2.5mm2 4-core

�.0/�.5mm225m/70m

�5m25/70

20g/m25m/80m 25/80MXZ-5D�00VA

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3. Obstacles in front (blowing) onlyWhenthereisanobstacleinfrontoftheunitasshowninthefigure,openspace above, behind, and on thesidesoftheunitisrequired.

2. Front (blowing) side openAs long as space indicatedin the figure is provided, itis allowed to install the unitwhere obstacles are behindandon thesidesof theunit.(Noobstacleabovetheunit)

FREE SPACE REQUIRED AROUND OUTDOOR UNIT

1-4. SELECTING THE INSTALLATION LOCATION• Whereitisnotexposedtostrongwind.• Whereairflowisgoodanddustless.• Whererainordirectsunshinecanbeavoidedasmuchaspossible.• Whereneighboursarenotannoyedbyoperationsoundorhotair.• Whererigidwallorsupportisavailabletopreventtheincreaseofop-

erationsoundorvibration.• Wherethereisnoriskofcombustiblegasleakage.• Wheninstallingtheunit,besuretosecuretheunitlegs.• Whereitisatleast3mawayfromtheantennaofTVsetorradio.Op-

erationoftheairconditionermayinterferewithradioorTVreceptioninareaswherereceptionisweak.Anamplifiermayberequiredfortheaf-fecteddevice.

• Installtheunithorizontally.• Please install it inanareanotaffectedbysnowfallorblowingsnow.

Inareaswithheavysnow,pleaseinstallacanopy,apedestaland/orsomebaffleboards.

Note:It isadvisable tomakeapiping loopnearoutdoorunitsoas to reducevibrationtransmittedfromthere.

500ormore

200ormore

350ormore�00ormore

1. Obstacles aboveWhen there is no obstacle in frontandon thesidesof theunit, it isal-lowed to install the unit where anobstacle isabove theunitonly if thespaceshowninthefigureisprovided.

�00ormore

500ormore

�00ormore

Servicespace

350ormore350ormore

6. Service spaceProvidespaceforserviceandmaintenanceasshowninthefigure.

500ormore

�00ormore

• Wheninstallingtheunitinanareathatisenclosedwithwallssuchasaverandah,besuretohaveenoughspaceasshownbelow.

Inthiscase,theairconditioningcapacityandpowerconsumptionmightdeteriorate.

• Whenthereisalackofairfloworthereisapossibilityofbecomingshortcycle,installanoutletguideandmakesurethereisenoughspacebehindoftheunit.

• Wheninstallingtwoormoreunits,donotinstalltheunitsinfrontorbehindeachother.

�00ormore

200ormore

350ormore

500ormore 500ormore

(Unit:mm)

5. Obstacles in front, behind and on side(s)

4. Obstacles in front and behindTheunitcanbeusedbyat-tachinganoptionaloutdoorblowingguide(MAC-856SG)(butbothsidesandtopareopen).

�00ormore

500ormore

Blowingguide(MAC-856SG)

Heightoftheobstacleis�200orless

1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTSIfthediameterofconnectionpipedoesnotmatchtheportsizeofoutdoorunit,useoptionaldifferent-diameterjointsaccordingtothefollowingtable.

Portsizeofoutdoorunit Optionaldifferent-diameterjoints(portsizeofoutdoorunit→diameterofconnectionpipe)MXZ-

4D80VAMXZ-

5D�00VA Liquid/Gas 6.35(�/4)→9.52(3/8):PAC-493PI9.52(3/8)→�2.7(�/2):MAC-A454JP

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.

AUNIT 6.35(�/4)/�2.7(�/2)

B-DUNIT B-EUNIT 6.35(�/4)/9.52(3/8)

(Unit:mm(inch))

Note: Whenoperatingtheairconditionerinlowoutsidetemperature,besuretofollowtheinstructionsdescribedbelow.• Neverinstalltheoutdoorunitinaplacewhereitsairinlet/outletside

maybeexposeddirectlytowind.• Topreventexposuretowind,installtheoutdoorunitwithitsairinlet

sidefacingthewall.• Topreventexposure towind, it is recommended to install abaffle

boardontheairoutletsideoftheoutdoorunit.Avoidthefollowingplacesforinstallationwhereairconditionertroubleisliabletooccur.• Whereflammablegascouldleak.• Wherethereismuchmachineoil.• Whereoilissplashedorwheretheareaisfilledwithoilysmoke(such

as cooking areas and factories, in which the properties of plasticcouldbechangedanddamaged).

• Saltyplacessuchastheseaside.• Wheresulfidegasisgeneratedsuchasahotspring.• Wherethereishigh-frequencyorwirelessequipment.• WherethereisemissionofhighlevelsofVOCs,includingphthalate

compounds, formaldehyde,etc.,whichmaycausechemicalcrack-ing.

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1-5. INSTALLATION DIAGRAM

Unitsshouldbeinstalledbylicensedcontractoraccordingtolocalcoderequirements.

ACCESSORIESCheckthefollowingpartsbeforeinstallation.(�) Drainsocket �

PARTS TO BE PROVIDED AT YOUR SITE(A) Powersupplycord* �(B) Indoor/outdoorunitconnectingwire* �(C) Extensionpipe �(D) Wallholecover �(E) Pipingtape �

(F)Extensiondrainhose(orsoftPVChose,�5mminnerdiameterorhardPVCpipeVP�6)

�

(G) Refrigerationoil Littleamount

(H) Putty �(I) Pipefixingband 2to7(J) Fixingscrewfor(I) 2to7(K) Wallholesleeve �

(L)SoftPVChose,�5mminnerdi-ameterorhardPVCpipeVP�6fordrainsocket(�)

�

* Note:Place indoor/outdoor unit connecting wire (B) andpowersupplycord(A)at least�maway fromtheTVantennawire.

The“Q’ty”for(B)to(K)intheabovetableisquan-titytobeusedperindoorunit.

Morethan�00mm

OpenasaruleMorethan500mmifthefrontandbothsidesareopen

Morethan�00mmMorethan200mmifthereareobstaclestobothsides

OpenasaruleMorethan500mmiftheback,bothsidesandtopareopen

Morethan350mm

Outdoor unit installation

Airinlet

Airoutlet

Airinlet

900mm

500mm200mm

2-U-shapenotchedholes(BaseboltM�0)

320

mm

2-�2mm×36mmovalholes(BaseboltM�0)

355

mm

387

mm

Aftertheleaktest,apply insulat-ingmaterialtightlysothatthereisnogap.

When the piping is to be at-tachedtoawallcontainingmetals(tin plated) or metal netting, usea chemical ly treated woodenpiece 20 mmor thicker betweenthewallandthepipingorwrap7to8 turnsof insulationvinyl tapearoundthepiping.To useexistingpiping, performCOOL operation for 30 minutesandpumpdownbeforeremovingthe old air conditioner. Remakeflareaccording to thedimensionfornewrefrigerant.

1-6. DRAIN PIPING FOR OUTDOOR UNITPleaseperformthedrainpipingworkonlywhendrainingfromoneplace.�)Providedrainpipingbeforeindoorandoutdoorpipingconnection.2)ConnectthesoftPVChose(L)I.D.�5mmasshownintheillustration.3)Makesuretoprovidedrainpipingwithadownhillgradeforeasydrainflow.

Note:Installtheunithorizontally.Donotusethedrainsocket(�)inthecoldregions.Drainmayfreezeanditmakesthefanstop.Theoutdoorunitproducescondensateduringtheheatingoperation.Select the in-stallationplacetoensuretopreventtheoutdoorunitand/orthegroundsfrombeingwetbydrainwaterordamagedbyfrozendrainwater. (�)Drainsocket

(L)SoftPVChose

IMPORTANT NOTES TocomplywiththerequirementsofAustralianstandardAS/NZS3000electricalinstallations(wiringrules),theelectricalwiringrequiredbetweentheindoorandoutdoorunitsmustbeinstalledbyalicencedelectricalcontractor.

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2. OUTDOOR UNIT INSTALLATION2-1. INSTALLING THE UNIT

2-2. CONNECTING WIRES FOR OUTDOOR UNIT

35mm�5mm

Leadwire

• Besuretoattacheachscrewtoitscorrespondentterminalwhensecuringthecordand/orthewiretotheterminalblock.• Makeearthwirealittlelongerthanothers.(Morethan35mm)• Forfutureservicing,giveextralengthtotheconnectingwires.

• Besuretofixtheunit’slegswithboltswheninstallingit.• Besuretoinstalltheunitfirmlytoensurethatitdoesnotfallbyanearthquakeoragust.• Refertothefigureintherightforconcretefoundation.• Donotusethedrainsocketandthedraincapsinthecoldregion. Drainmayfreezeanditmakesthefanstop.

�)Removetheservicepanel.2)Loosen terminal screw, and connect indoor/outdoor unit connecting

wire(B)fromtheindoorunitcorrectlyontheterminalblock.Becarefulnottomakemis-wiring.Fixthewiretotheterminalblocksecurelysothatnopartofitscoreisappeared,andnoexternalforceisconveyedtotheconnectingsectionoftheterminalblock.

3)Firmlytightentheterminalscrewstopreventthemfromloosening.Af-tertightening,pullthewireslightlytoconfirmthattheydonotmove.

4)Perform2)and3)foreachindoorunit.5)Connectpowersupplycord(A).6)Fixindoor/outdoorunitconnectingwire(B)andpowersupplycord(A)

withthecableclamps.7)Closetheservicepanelsecurely.Makesurethat3-2.PIPECONNEC-

TIONiscompleted.• Aftermakingconnectionsbetweenbothpowersupplycord(A)andindoor/outdoorunitconnectingwire(B),besuretofixbothcableandwirewithcableclamps.

Connectingorder• Connect the terminal block in

followingorder. A→B→C→D→E→P

<OUTDOORUNIT>

Indoor/outdoorunitconnectingwire

<INDOORUNIT>

Terminalblock

POWERSUPPLY~/N230V50HzTerminalblock Terminalblock

TerminalblockforpowersupplyTerminalblock

ServicepanelScrews

FixherewithM�0bolts.

Makethesettingdepthdeeper.

Makewithwider.

Anchorleg

25o

rles

s

Anchorbothlength Anchorbothpitch

(Unit:mm)

5D�00VA

Terminalblockforpowersupply

Eunitisfor5D�00VAonly

Powersupply

Terminalblockforindoor/outdoorunit

Cableclamp

Eunitisfor5D�00VAonly

500

330

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4-1. PURGING PROCEDURES AND LEAK TEST

Fig.� Fig.2

Fig.3 Fig.4

Fig.5 Fig.6

3. FLARING WORK AND PIPE CONNECTION3-1. FLARING WORK

Pipediameter(mm)

Nut(mm)

A(mm) TighteningtorqueClutch

typetoolforR4�0A

ClutchtypetoolforR22

WingnuttypetoolforR22

N•m kgf•cm

ø6.35(�/4”) �7

0to0.5 �.0to�.5�.5to2.0

�3.7to�7.7 �40to�80ø9.52(3/8”) 22 34.3to4�.2 350to420ø�2.7(�/2”) 26

2.0to2.549.0to56.4 500to575

ø�5.88(5/8”) 29 73.5to78.4 750to800

TiltedUnevenBurred

Good Nogood

Burr CopperpipeSparereamer

Pipecutter

Smoothallaround

Evenlengthallaround

Insideisshin-ingwithoutanyscratches.

Flarenut

DieCopperpipe

Clutchtype

Flaringtool

Wingnuttype

3-2. PIPE CONNECTION1)Applya thincoatof refrigerationoil (G) to theflaredendsof thepipes

andthepipeconnectionsoftheoutdoorunit.Donotapplyrefrigerationoilonscrewthreads.Excessive tightening torquewill result indamageonthescrew.

2)Alignthecenterofthepipewiththatofthepipeconnectionsoftheout-doorunit,thenhandtightentheflarenut3to4turns.

3)Tightentheflarenutwithatorquewrenchasspecifiedinthetable.•Over-tighteningmaycausedamagetotheflarenut,resultinginrefrig-

erantleakage.•Besure towrap insulationaround thepiping.Direct contactwith the

barepipingmayresultinburnsorfrostbite.

3-3. INSULATION AND TAPING�)Coverpipingjointswithpipecover.2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.3)Usingpiping tape (E), apply taping starting from theentry of outdoor

unit.• Stop the endof piping tape (E) with tape (with adhesiveagent at-

tached).• When piping have to be arranged through above ceiling, closet or

wherethetemperatureandhumidityarehigh,windadditionalcommer-ciallysoldinsulationtopreventcondensation.

4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

Copperpipe

�)Cutthecopperpipecorrectlywithpipecutter.(Fig.�,2)2)Completelyremoveallburrsfromthecutcrosssectionofpipe.(Fig.3)

• Aim the copper pipe downward while removing burrs to preventburrsfromdroppinginthepipe.

3)Removeflarenutsattachedtoindoorandoutdoorunits,thenputthemonpipehavingcompletedburrremoval.(Notpossibletoputthemonafterflaringwork.)

4)Flaringwork (Fig. 4, 5). Firmly hold copper pipe in the dimensionshowninthetable.SelectAmmfromthetableaccordingtothetoolselected.

5)Check• ComparetheflaredworkwithFig.6.• Ifflareisnotedtobedefective,cutofftheflaredsectionanddoflar-

ingworkagain.

�)Removeserviceportcapofstopvalveonthesideoftheoutdoorunitgaspipe.(Thestopvalvesarefullyclosedandcoveredincapsintheirinitialstate.)

2)Connect gauge manifold valve and vacuum pump to service port ofstopvalveonthegaspipesideoftheoutdoorunit.

3)Runthevacuumpump.(Vacuumizeformorethan�5minutes.)4)Checkthevacuumwithgaugemanifoldvalve,thenclosegaugemani-

foldvalve,andstopthevacuumpump.5)Leaveasitisforoneortwominutes.Makesurethepointerofgauge

manifold valve remains in the sameposition.Confirm that pressuregaugeshows-0.�0�MPa[Gauge](-760mmHg).

6)Removegaugemanifoldvalvequicklyfromserviceportofstopvalve.7)Fullyopenallstopvalvesonthegaspipeandtheliquidpipe.Operat-

ingwithoutfullyopeninglowerstheperformanceandthiscausestrou-ble.

8)Refer to �-2., and charge the prescribed amount of refrigerant ifneeded. Be sure to charge slowly with liquid refrigerant. Otherwise,compositionof therefrigerant inthesystemmaybechangedandaf-fectperformanceoftheairconditioner.

9)Tightencapofserviceporttoobtaintheinitialstatus.�0)Leaktest

WARNINGWhen installing the unit, securely connect the refrigerant pipes before starting the compressor.

CAUTIONWhen there are the ports which are not used, make sure their nuts are tightened securely.

Serviceportcap(Torque�3.7to�7.7N•m,�40to�80kgf•cm)

StopvalveforGAS

Stopvalvecap(Torque�9.6to29.4N•m,200to300kgf•cm)

Gaugemanifoldvalve(forR4�0A)

Compoundpressuregauge(forR4�0A)–0.�0�MPa

(–760mmHg)

HandleLow

HandleHigh

Vacuumpump(forR4�0A)

Chargehose(forR4�0A)

*Close*Open

Hexagonalwrench

*4to5turns

StopvalveforLIQUID

Pressuregauge(forR4�0A)

Precautionswhenusingthecontrolvalve

Whenattachingthecontrolvalvetotheserviceport,valvecoremayde-formorloosenifexcesspressureisapplied.Thismaycausegasleak.

Serviceport

Chargehose(forR4�0A)Body

Close

Open

Controlvalve

A

Whenattachingthecontrolvalvetotheserviceport,makesurethatthevalvecoreisinclosedposition,andthen tightenpartA.Do not tightenpartAor turnthebodywhenvalvecoreisinopenposition.

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4-3. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)

4-4. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT

4-2. GAS CHARGEPerformgaschargetounit.�)Connectgascylindertotheserviceportofstopvalve.2)Performairpurgeofthepipe(orhose)comingfromrefrigerantgascylinder.3)Replenishspecifiedamountof the refrigerant,whileoperating theaircondi-

tionerforcooling.

Note:Incaseofaddingrefrigerant,complywiththequantityspecifiedfortherefrigerat-ingcycle.

CAUTION:Whenchargingtherefrigerantsystemwithadditionalrefrigerant,besuretouseliquid refrigerant.Adding gas refrigerant may change the composition of therefrigerantinthesystemandaffectnormaloperationoftheairconditioner.Also,chargetheliquidrefrigerantslowly,otherwisethecompressorwillbelocked.To maintain the highpressureof the gas cylinder,warm the gas cylinderwithwarmwater(under40°C)duringcoldseason.Butneverusenakedfireorsteam.

• 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]�)Besure to turnoff themainpower for theairconditionerbeforemaking the

setting.2)Setthe“�”ofSW�ontheoutdoorcontrollerboardtoONtoenablethisfunc-

tion.3)TolocktheoperationmodeinCOOL/DRYmode,set the“2”ofSW�onthe

outdoorcontrollerboardtoOFF.TolocktheoperationinHEATmode,setthesameswitchtoON.

4)Turnonthemainpowerfortheairconditioner.

• Descriptionofthefunction: Withthisfunction,theoperatingnoiseoftheoutdoorunitcanbeloweredbyreducingtheoperationload,forexample,duringnighttimeinCOOLmode.

However,pleasenotethatthecoolingandheatingcapacitymaylowerifthisfunctionisactivated.* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.

4-5. CHANGING THE AMPERE LIMIT• Descriptionofthefunction: Withthisfunction,theamountofcurrentthatflowsintheoutdoorunitcanbe

changed.

Note:Usethisfunctiononlywhentheamountofcurrentexceedstheallowedvalue.

[How to change the ampere limit]�)Besure to turnoff themainpower for theairconditionerbeforemaking the

setting.2)Makethesettingreferringtothetablebelow.3)Turnonthemainpowerfortheairconditioner.

Lowertheoperatingnoise

[How to lower the operating noise]�)Besure to turnoff themainpower for theairconditionerbeforemaking the

setting.2)Setthe“3”ofSW�ontheoutdoorcontrollerboardtoONtoenablethisfunc-

tion.3)Turnonthemainpowerfortheairconditioner.

Union

Stopvalve

Liquidpipe

Indoorunit

Stopvalvewithserviceport Gas

pipe

Refrigerantgascylinderoperatingvalve(forR4�0A)

Gaugemanifoldvalve(forR4�0A)

Chargehose(forR4�0A)

RefrigerantgascylinderforR4�0Awithsiphon

Electronicscaleforrefrigerantcharging

Refrigerant(liquid)

Outdoorunit

*Eunitisfor5D�02VAonly.

Union

Union

Union

HEATCOOL/DRY

SW2 MXZ-5D�00VA MXZ-4D80VA

�0.5A �0.5A

�5.5A �5.5A

FactorysettingFull

FactorysettingFull

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4-6. TEST RUN• Testrunsoftheindoorunitsshouldbeperformedindividually.Seetheinstallationmanualcomingwiththeindoorunit,andmakesurealltheunitsoper-

ateproperly.• Ifthetestrunwithalltheunitsisperformedatonce,possibleerroneousconnectionsoftherefrigerantpipesandtheindoor/outdoorunitconnectingwires

cannotbedetected.Thus,besuretoperformthetestrunonebyone.

About the restart protective mechanismOncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnotoperatefor3minutestoprotecttheairconditioner.

Wiring/piping correction functionThisunithasawiring/pipingcorrectionfunctionwhichcorrectswiringandpipingcombination.Whenthereispossibilityofincorrectwiringandpipingcombi-nation,andconfirmingthecombinationisdifficult,usethisfunctiontodetectandcorrectthecombinationbyfollowingtheproceduresbelow.

Makesurethatthefollowingisdone.• Powerissuppliedtotheunit.• Stopvalvesareopen.

Note:Duringdetection,theoperationoftheindoorunitiscontrolledbytheoutdoorunit.Duringdetection,theindoorunitautomaticallystopsoperation.Thisisnotamalfunction.

ProcedurePressthepiping/wiringcorrectionswitch(SW87�)�minuteormoreafterturningonthepowersupply.

• Correctioncompletesin�0to�5minutes.Whenthecorrectioniscompleted,itsresultisshownbyLEDindication.Detailsaredescribedinthefollowingtable.

• Tocancelthisfunctionduringitsoperation,pressthepiping/wiringcorrectionswitch(SW87�)again.

• Whenthecorrectioncompletedwithouterror,donotpressthepiping/wiringcorrectionswitch(SW87�)again.

When the resultwas “cannot be corrected”, press the piping/wiring correction switch(SW871)againtocancelthisfunction.Then,confirmthewiringandpipingcombinationinaconventionalmannerbyoperatingtheindoorunitsonebyone.

• The operation is done while the power is supplied. Make sure not to contact partsotherthantheswitch,includingtheP.C.board.Thismaycauseelectricshockorburnbyhotpartsandlivepartsaroundtheswitch.ContactingthelivepartsmaycauseP.C.boarddamage.

• TopreventelectroniccontrolP.C.boarddamage,makesuretoperformstaticelimi-nationbeforeoperatingthisfunction.

• Thisfunctiondoesnotoperatewhentheoutsidetemperatureis0°Corbelow.

LED indication during detection:LED�(Red)

LED2(Yellow)

LED3(Green)

Lighted Lighted Once

Result of piping/wiring correction functionLED�(Red)

LED2(Yellow)

LED3(Green) Result

Lighted Notlighted LightedCompleted(Problemcorrectedornormal)

Once Once Once Notcompleted(Detectionfailed)

Otherindications

Referto“SAFETYPRE-CAUTIONSWHENLEDFLASHES”locatedbehindtheservicepanel.

5. RELOCATION AND MAINTENANCE5-1. PUMPING DOWNWhenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmos-phere.�)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0

MPa[Gauge](0kgf/cm2).4)StarttheemergencyCOOLoperationonalltheindoorunits. TostarttheemergencyoperationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After�5seconds,connectthepower

supplyplugand/orturnonthebreaker,andthenpresstheE.O.SWonce.(TheemergencyCOOLoperationcanbeperformedcontinuouslyforupto30minutes.)

5)Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm2).6)StoptheemergencyCOOLoperation. PresstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.

When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. The compressor may burst if air etc. get into it.

WARNING

4-7. EXPLANATION TO THE USER• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairfil-

ters,howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.).• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.

BH79A024H0�

HEADOFFICE:TOKYOBLDG.,2-7-3,MARUNOUCHI,CHIYODA-KU,TOKYO�00-83�0,JAPAN

BH79A024H01_en.indd 7 2014/01/21 13:46:51