Mitsubishi MXZ-6E120VAD Air Conditioner User Manual

Split-type Air-Conditioner

MXZ-6E120VAD

English

Installation Manual

For INSTALLER

• This manual only describes the installation of outdoor unit.

When installing the indoor unit, refer to the installation manual of indoor unit.

BH79A274H01_en.indd 1 2016/03/23 10:42:14

En-1

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.

• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.

• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.

• EquipmentcomplyingwithIEC/EN61000-3-12.

1-2. SPECIFICATIONS

Model

Powersupply*1 Wirespecications*2 Pipelengthandheightdifference

*3,*4,*5,*6,*7,*8

Rated

Voltage

Fre-

quency

Breaker

capacity

Power

supply

Indoor/outdoor

connectingwire

Max.pipe

lengthper

indoorunit/for

multi-system

Max. height

difference*9

Max. no. of bends

perindoorunit/

for multi system

Refrigerant

adjustment

A*10

MXZ-6E120VAD 230V 50Hz 32A

3-core

4.0mm

4-core

1.0/1.5mm

25m/80m 15m 25/80 20g/m

*1 Connecttothepowerswitchwhichhasagapof3mmormorewhenopen

tointerruptthesourcepowerphase.(Whenthepowerswitchisshutoff,it

mustinterruptallphases.)

*2 Usewiresinconformitywithdesign60245IEC57.Usetheindoor/outdoor

connectingwireinconformitywiththewirespecicationsspeciedinthe

installation manual of the indoor unit.

*3 Neverusepipeswiththicknesslessthanspecied.Thepressureresistance

willbeinsufcient.

*4 Useacopperpipeoracopper-alloyseamlesspipe.

*5 Becarefulnottocrushorbendthepipeduringpipebending.

*6 Refrigerantpipebendingradiusmustbe100mmormore.

*7 Insulationmaterial:Heatresistingfoamplastic0.045specicgravity

*8 Besuretousetheinsulationofspeciedthickness.Excessivethickness

maycauseincorrectinstallationoftheindoorunitandinsufcientthickness

maycausedewdrippage.

If the outdoor unit is installed higher than the indoor unit, max. height

differenceisreducedto10m.

Ifpipelengthexceeds30m,additionalrefrigerant(R410A)chargeisre-

quired.(Noadditionalchargeisrequiredforpipelengthlessthan30m.)

 Additionalrefrigerant=A×(pipelength(m)-30)

Required Tools for Installation

Phillipsscrewdriver

Level

Scale

Utilityknifeorscissors

Torquewrench

Wrench(orspanner)

4mmhexagonalwrench

FlaretoolforR410A

GaugemanifoldforR410A

VacuumpumpforR410A

ChargehoseforR410A

Pipecutterwithreamer

ENGLISH

CONTENTS

1.BEFOREINSTALLATION ............................................................1

2.OUTDOORUNITINSTALLATION ...............................................4

3.FLARINGWORKANDPIPECONNECTION ...............................5

4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN .........5

5.PUMPINGDOWN ........................................................................ 7

CAUTION

(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)

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

 Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit

falling,orleakageofwater.Consultthedealerfromwhomyoupurchased

theunitoraqualiedinstaller.

n Perform the installation securely referring to the installation manual.

 Incompleteinstallationcouldcausere,electricshock,injuryduetothe

unitfalling,orleakageofwater.

n When installing the unit, use appropriate protective equipment and

tools for safety.

Failure to do so could cause injury.

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could

fall causing injury.

n Electrical work should be performed by a qualied, experienced electri-

cian, according to the installation manual. Be sure to use an exclusive

circuit. Do not connect other electrical appliances to the circuit.

 If thecapacity of the power circuit is insufcient or there is incomplete

electricalwork,itcouldresultinareoranelectricshock.

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

or screws.

 Damagedwirescouldcausereorelectricshock.

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

board or wiring works.

 Failuretodosocouldcauseelectricshock.

n Use the specied wires to connect the indoor and outdoor units

securely and attach the wires rmly 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.

 Incompleteconnectingandsecuringcouldcausere.

n Do not install the unit in a place where inammable gas may leak.

 Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcausean

explosion.

n Do not use intermediate connection of the power cord or the extension

cord and do not connect many devices to one AC outlet.

 Itcouldcauseareoranelectricshockduetodefectivecontact,defective

insulation,exceedingthepermissiblecurrent,etc.

n Be sure to use the parts provided or specied parts for the installation

work.

 Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterdue

toare,anelectricshock,theunitfalling,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.

 Ifthereisdust,clogging,orloosepartsonthepowersupplyplugorthe

outlet,itcouldcauseelectricshockorre.Ifloosepartsarefoundonthe

powersupplyplug,replaceit.

n Attach the electrical cover to the indoor unit and the service panel

to the outdoor unit securely.

 Iftheelectricalcoveroftheindoorunitand/ortheservicepanelofthe

outdoorunitarenotattachedsecurely,itcouldresultinareoranelectric

shockduetodust,water,etc.

n When installing, relocating, or servicing the unit, make sure that no

substance other than the specied refrigerant (R410A) enters the

refrigerant circuit.

 Anypresenceofforeignsubstancesuchasaircancauseabnormalpres-

sureriseandmayresultinexplosionorinjury.Theuseofanyrefrigerant

otherthan thatspeciedfor the systemwillcause mechanicalfailure,

systemmalfunction,orunitbreakdown.Intheworstcase,thiscouldlead

toaseriousimpedimenttosecuringproductsafety.

n Do not discharge the refrigerant into the atmosphere. If refrigerant

leaks during installation, ventilate the room.

 Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.

n Check that the refrigerant gas does not leak after installation has

been completed.

Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofa

fanheater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.

n Use appropriate tools and piping materials for installation.

 ThepressureofR410Ais1.6timesmorethanR22.Notusingappropriate

toolsormaterialsandincompleteinstallationcouldcausethepipesto

burst or injury.

n When pumping down the refrigerant, stop the compressor before

disconnecting the refrigerant pipes.

 Iftherefrigerantpipesaredisconnectedwhilethecompressorisrunning

andthestopvalveisopen,aircouldbedrawninandthepressureinthe

refrigeration cycle could become abnormally high. This could cause the

pipestoburstorinjury.

n When installing the unit, securely connect the refrigerant pipes

before starting the compressor.

 Ifthecompressorisstartedbeforetherefrigerantpipesareconnected

andwhenthestopvalveisopen,aircouldbedrawninandthepressure

in the refrigeration cycle could become abnormally high. This could cause

thepipestoburstorinjury.

n Fasten a are nut with a torque wrench as specied in this manual.

 Iffastenedtootight,aarenutmaybreakafteralongperiodandcause

refrigerantleakage.

n The unit shall be installed in accordance with national wiring regula-

tions.

n Earth the unit correctly.

 Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortel-

ephoneearth.Defectiveearthingcouldcauseelectricshock.

n Be sure to install an earth leakage breaker.

Failuretoinstallanearthleakagebreakermayresultinelectricshockorre.

n Perform the drainage/piping work securely according to the installation

manual.

 Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromtheunit,

soakinganddamaginghouseholdgoods.

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

This could cause injury.

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re.Also,adviseusertokeep

the area around the unit clean.

WARNING

(Couldleadtodeath,seriousinjury,etc.)

1. BEFORE INSTALLATION

BH79A274H01_en.indd 1 2016/03/23 10:42:15

En-2

1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTS

Ifthediameterofconnectionpipedoesnotmatchtheportsizeofoutdoorunit,useoptionaldifferent-diameterjointsaccordingtothefollowingtable.

Portsizeofoutdoorunit Optionaldifferent-diameterjoints(portsizeofoutdoorunit

→

diameterofconnectionpipe)

MXZ-6E Liquid/Gas

6.35(1/4)

→

9.52(3/8):PAC-493PI

9.52(3/8)

→

12.7(1/2):MAC-A454JP

9.52(3/8)

→

15.88(5/8):PAC-SG76RJ

12.7(1/2)

→

9.52(3/8):MAC-A455JP

12.7(1/2)

→

15.88(5/8):MAC-A456JP

Refertotheinstallationmanualofindoorunitforthediameterofconnectionpipeofindoorunit.

AUNIT 6.35(1/4)/12.7(1/2)

B-FUNIT 6.35(1/4)/9.52(3/8)

1-4. SELECTING THE INSTALLATION LOCATION

• Whereitisnotexposedtostrongwind.

• Whereairowisgoodanddustless.

• Whererainordirectsunshinecanbeavoidedasmuchaspossible.

• Whereneighboursarenotannoyedbyoperationsoundorhotair.

• Whererigidwallorsupportisavailabletopreventtheincreaseofopera-

tionsoundorvibration.

• Wherethereisnoriskofcombustiblegasleakage.

• Wheninstallingtheunit,besuretosecuretheunitlegs.

• Whereitisatleast3mawayfromtheantennaofTVsetorradio.Opera-

tionoftheairconditionermayinterferewithradioorTVreceptioninareas

wherereceptionisweak.Anampliermayberequiredfortheaffected

device.

• Installtheunithorizontally.

• Pleaseinstallitinanareanotaffectedbysnowfallorblowingsnow.In

areaswithheavysnow,pleaseinstallacanopy,apedestaland/orsome

bafeboards.

Note:

Itis advisabletomake a pipingloop near outdoorunit so asto reduce

vibrationtransmittedfromthere.

Note:

Whenoperatingtheairconditionerinlowoutsidetemperature,besure

tofollowtheinstructionsdescribedbelow.

• Neverinstalltheoutdoorunitinaplacewhereitsairinlet/outletside

maybeexposeddirectlytowind.

• Topreventexposuretowind,installtheoutdoorunitwithitsairinlet

sidefacingthewall.

•

Topreventexposuretowind,itisrecommendedtoinstallabafeboard

on the air outlet side of the outdoor unit.

Avoidthefollowingplacesforinstallationwhereairconditionertrouble

is liable to occur.

• Whereammablegascouldleak.

• Wherethereismuchmachineoil.

• Saltyplacessuchastheseaside.

• Wheresuldegasisgenerated suchashotspring,sewage,waste

water.

• Wherethereishigh-frequencyorwirelessequipment.

• WherethereisemissionofhighlevelsofVOCs,includingphthalate

compounds,formaldehyde,etc.,whichmaycausechemicalcracking.

(Unit:mm(inch))

3. Obstacles in front (blowing) only

When there is an obstacle in front of

theunitasshowninthegure,open

spaceabove,behind,andonthesides

oftheunitisrequired.

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.

(Noobstacleabovetheunit)

FREE SPACE REQUIRED AROUND OUTDOOR UNIT

500ormore

200ormore

350ormore100ormore

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spaceshown

inthegureisprovided.

100ormore

500ormore

100ormore

Servicespace

350ormore

350ormore

6. Service space

Providespaceforserviceandmaintenanceasshowninthegure.

500ormore

100ormore

• Wheninstallingtheunitinanareathatisenclosedwithwallssuch

asaverandah,besuretohaveenoughspaceasshownbelow.

 Inthiscase,theairconditioningcapacityandpowerconsumption

might deteriorate.

• Whenthereisalackofairoworthereisapossibilityofbecoming

shortcycle,installanoutletguideandmakesurethereisenough

spacebehindoftheunit.

• Wheninstallingtwoormoreunits,donotinstalltheunitsinfrontor

behind each other.

100ormore

200ormore

350ormore

500ormore

(Unit:mm)

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

4. Obstacles in front and behind

The unit can be used by at-

tachinganoptionaloutdoor

blowingguide(PAC-

SH96SG-E)(butbothsides

andtopareopen).

100ormore

500ormore

Blowingguide(PAC-SH96SG-E)

Heightoftheobstacleis1200orless

BH79A274H01_en.indd 2 2016/03/23 10:42:15

En-3

1-5. INSTALLATION DIAGRAM

Unitsshouldbeinstalledbylicensedcontractoraccordingtolocalcoderequirements.

After the leak test, apply insulat-

ing material tightly so that there

isnogap.

ACCESSORIES

Checkthefollowingpartsbeforeinstallation.

(1) Drainsocket 1

(2) Draincap 5

PARTS TO BE PROVIDED AT YOUR SITE

(A) Powersupplycord* 1

(B) Indoor/outdoorunitconnectingwire* 1

(D) Wallholecover 1

(E) Pipingtape 1

(F)

Extension drain hose

(orsoftPVChose,15mminner

diameterorhardPVCpipeVP16)

(G) Refrigeration oil

Little

amount

(H) Putty 1

(I) Pipexingband 2to7

(J) Fixingscrewfor(I) 2to7

(K) Wallholesleeve 1

(L)

SoftPVChose,15mminner

diameterorhardPVCpipeVP16

fordrainsocket(1)

* Note:

Place indoor/outdoor unit connecting wire (B)and

powersupplycord (A) atleast1maway from the

TVantennawire.

The“Q’ty”for(B)to(K)intheabovetableisquantity

tobeusedperindoorunit.

More than

100mm

Openasarule

Morethan500mm

if the front and both

sidesareopen

Morethan100mm

Morethan200mmifthereare

obstacles to both sides

Openasarule

Morethan500mmiftheback,

bothsidesandtopareopen

Morethan350mm

Outdoor unit installation

Air inlet

Air outlet

Air inlet

950mm

600mm

175

2-U-shapenotchedholes

(BaseboltM10)

330mm

2-12mm×36mm

ovalholes(BaseboltM10)

370mm

417mm

Whenthepipingistobeattachedto

awallcontainingmetals(tinplated)

or metal netting, use a chemically

treated wooden piece20 mm or

thicker between the wall and the

pipingorwrap7to8turnsofinsula-

tionvinyltapearoundthepiping.

To use existing piping, perform

COOL operation for30 minutes

and pump down before removing

theoldairconditioner.Remakeare

accordingtothedimensionfornew

refrigerant.

1-6. DRAIN PIPING FOR OUTDOOR UNIT

1) Performthedrainpipingworkonlywhendrainingfromoneplace.

2) Providedrainpipingbeforeindoorandoutdoorpipingconnection.

3) Attachthedrainsockettooneoftheseveraldrainholes.

 Fixthedrainsocketintothedrainholeofthebaseusingthecatchestosecureitin

place.

4) ConnectthesoftPVChoseI.D.15mmasshownintheillustration.

5) Makesuretoprovidedrainpipingwithadownhillgradeforeasydrainow.

6) Gluethedraincapstoclosealltheotherunnecessaryholeswiththeglue(Prepare

intheeld).

Note:

Applythegluesecurely,astheglue(Prepareintheeld)willworkassealtoprevent

waterfromleaking.

Usetheadhesivefortherubberandmetal.

Attention

The outdoorunit is providedwith several holes for drainage at the bottom to make

drainage easier.

Thedrainsocketisusedtoclosetheunnecessaryholesandcentralizethedrainage

whenusingthedraintubeattheinstallationplace.

Donottousethedrainsocketincoldregion.Thedraintubecanbefrozen.

(1)Drainsocket

(L)SoftPVChose

(2)Draincap

BH79A274H01_en.indd 3 2016/03/23 10:42:15

En-4

A B C

D E F

A B C

D E F

A B C

E F

A B C

D E F

A B C

D D E F

DRDRDRDRDR

P P P P P

2-1. INSTALLING THE UNIT

Fixherewith

M10bolts.

Makethesetting

depthdeeper.

Makewidthwider.

Anchor leg

25orless

Anchor bolt length

Anchorboltpitch

(Unit:mm)

2-2. CONNECTING WIRES FOR OUTDOOR UNIT

Terminalblock

forpowersupply

• Besuretoxtheunit’slegswithboltswheninstallingit.

• Besuretoinstalltheunitrmlytoensurethatitdoesnotfallbyanearthquakeoragust.

• Refertothegureintherightforconcretefoundation.

• Donotusethedrainsocketandthedraincapsinthecoldregion.

 Drainmayfreezeanditmakesthefanstop.

• Removethetapeonthepanelwhenopeningthepackage.(DONOTremovetheLABELSonthepanel.)

1)Removetheservicepanel.

2)Loosenterminalscrew,andconnectindoor/outdoorunitconnectingwire

(B)fromtheindoorunitcorrectlyontheterminalblock.Becarefulnot

tomakemis-wiring.Fixthewiretotheterminalblocksecurelysothat

nopartofitscoreisappeared,andnoexternalforceisconveyedtothe

connectingsectionoftheterminalblock.

3)Firmlytightentheterminalscrewstopreventthemfromloosening.After

tightening,pullthewireslightlytoconrmthattheydonotmove.

4)Perform2)and3)foreachindoorunit.

5)Connectpowersupplycord(A).

6)Fixindoor/outdoorunitconnectingwire(B)andpowersupplycord(A)

withthecableclamps.

7)Closetheservicepanelsecurely.Makesurethat3-2.PIPECONNEC-

TIONiscompleted.

• After making connectionsbetweenbothpowersupplycord(A) and

indoor/outdoorunitconnectingwire(B),besuretoxbothcableand

wirewithcableclamps.

Connectingorder

• Connect theterminal block in

followingorder.

→

Terminalblockforindoor/outdoorunit

Cableclamps

600

370

Servicepanel

Screws

Note:

• Removingthehandleincreasestheeffectivenessofthewiringoperation.

• Besuretoreinstallthehandle.

2. OUTDOOR UNIT INSTALLATION

Terminalblock

forDREDInterface

DREDInterface

Powersupply

35mm

15mm

Leadwire

• Besuretoattacheachscrewtoitscorrespondent

terminalwhensecuringthecordand/orthewireto

theterminalblock.

• Makeearthwirealittlelongerthanothers.

(Morethan35mm)

• Forfutureservicing,giveextralengthtothecon-

nectingwires.

1 2 3 C

<OUTDOORUNIT>

Indoor/outdoorunit

connectingwire

<INDOORUNIT>

Terminalblock

Terminalblock Terminalblock

Terminalblockfor

powersupply

Terminalblock

<INDOORUNIT>

POWERSUPPLY

~/N230V50Hz

ThisunithasdemandresponsecapabilitywhichiscompliantwithAS/NZS4755.3.1.Toactivatethisfunction,youneedtomakeacontractwithremote

agentssuchaselectricsupplycompany,thenthisunitshouldbeconnectedtoDemandresponseenablingdevise(DRED).Forfurtherinformation,

consultyourdealer.Thisunitsupports3DemandResponseModes(DRMs):DRM1,DRM2andDRM3.

CAUTION

•Topreventmalfunctioncausedbynoise,routethecordconnectingthisunittoDREDandthepowersupplycordasparallelaspossible.

•Donotconnectthedemandcontroltransmissioncabletotheterminalblockforpowersupply.

•Donotpull,extremelybendorapplystrongpressureonthewiretopreventfailure.

•DonotscrewDREDtooutdoorunit.

•DonotputDREDinoutdoorunit.

•Secureelectricalwiringaboveclamp.

•DonotgetDREDwirecaughtintheservicepanel.

1:DRM1

2:DRM2

3:DRM3

C:COMMON

AS/NZS4755

terminalblock

BH79A274H01_en.indd 4 2016/03/23 10:42:17

En-5

Fig. 1 Fig.2

Fig.3 Fig.4

Fig.5 Fig.6

3-1. FLARING WORK

Pipediameter

(mm)

Nut

(mm)

A(mm) Tighteningtorque

Clutch

typetool

forR410A

Clutch

typetool

forR22

Wing nut

typetool

forR22

N•m kgf•cm

ø6.35(1/4”) 17

0to0.5 1.0to1.5

1.5to2.0

13.7to17.7 140to180

ø9.52(3/8”) 22 34.3to41.2 350to420

ø12.7(1/2”) 26

2.0to2.5

49.0to56.4 500to575

ø15.88(5/8”) 29 73.5to78.4 750to800

TiltedUnevenBurred

Good

No good

Burr

Copperpipe

Sparereamer

Pipecutter

Smooth all

around

Evenlength

all around

Inside is shin-

ingwithoutany

scratches.

Flare nut

Die

Copperpipe

Clutchtype

Flaring tool

Wingnuttype

3-2. PIPE CONNECTION

1)Applyathincoatofrefrigerationoil(G)tothearedendsofthepipes

andthepipeconnectionsoftheoutdoorunit.Donotapplyrefrigeration

oilonscrewthreads.Excessivetighteningtorquewillresultindamage

onthescrew.

2)Alignthecenterofthepipewiththatofthepipeconnectionsoftheoutdoor

unit,thenhandtightenthearenut3to4turns.

3)Tightenthearenutwithatorquewrenchasspeciedinthetable.

• Over-tighteningmaycausedamagetothearenut,resultinginrefriger-

antleakage.

• Besuretowrapinsulationaroundthepiping.Directcontactwiththe

barepipingmayresultinburnsorfrostbite.

3-3. INSULATION AND TAPING

1)Coverpipingjointswithpipecover.

2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.

3)Usingpipingtape(E),applytapingstartingfromtheentryofoutdoorunit.

• Stoptheendofpipingtape(E)withtape(withadhesiveagentattached).

• Whenpipinghavetobearrangedthroughaboveceiling,closetorwhere

thetemperatureandhumidityarehigh,windadditionalcommercially

soldinsulationtopreventcondensation.

Copper

pipe

1)Cutthecopperpipecorrectlywithpipecutter.(Fig.1,2)

2)Completelyremoveallburrsfromthecutcrosssectionofpipe.(Fig.3)

• Aimthecopperpipedownwardwhileremovingburrstopreventburrs

fromdroppinginthepipe.

3)Removearenutsattachedtoindoorandoutdoorunits,thenputthem

onpipehavingcompletedburrremoval.(Notpossibletoputthemon

afteraringwork.)

4)Flaringwork(Fig.4,5).Firmlyholdcopperpipeinthedimensionshown

in the table. Select A mm from the table according to the tool selected.

5)Check

• ComparethearedworkwithFig.6.

• Ifareisnotedtobedefective,cutoffthearedsectionanddoaring

workagain.

WARNING

When installing the unit, securely

connect the refrigerant pipes before

starting the compressor.

CAUTION

When there are the ports which are

not used, make sure their nuts are

tightened securely.

4-1. PURGING PROCEDURES AND LEAK TEST

1)Removeserviceportcapofstopvalveonthesideoftheoutdoorunit

gaspipe.(Thestopvalvesarefullyclosedandcoveredincapsintheir

initialstate.)

2)Connectgaugemanifoldvalveandvacuumpumptoserviceportofstop

valveonthegaspipesideoftheoutdoorunit.

3)Runthevacuumpump.(Vacuumizeformorethan15minutes.)

4)Checkthevacuumwithgaugemanifoldvalve,thenclosegaugemanifold

valve,andstopthevacuumpump.

5)Leaveasitisforoneortwominutes.Makesurethepointerofgauge

manifoldvalveremainsinthesameposition.Conrmthatpressuregauge

shows-0.101MPa[Gauge](-760mmHg).

6)Removegaugemanifoldvalvequicklyfromserviceportofstopvalve.

7)Fullyopenallstopvalvesonthegaspipeandtheliquidpipe.Operating

withoutfullyopeninglowerstheperformanceandthiscausestrouble.

8)Referto1-2.,andchargetheprescribedamountofrefrigerantifneeded.

Besuretochargeslowlywithliquidrefrigerant.Otherwise,composition

oftherefrigerantinthesystemmaybechangedandaffectperformance

of the air conditioner.

9)Tightencapofserviceporttoobtaintheinitialstatus.

)Leaktest

Stopvalve

forGAS

Gaugemani-

foldvalve(for

R410A)

Compoundpressure

gauge(forR410A)

–0.101MPa

(–760mmHg)

Handle

Low

HandleHigh

Vacuumpump

(forR410A)

Chargehose

(forR410A)

*Close

*Open

Hexagonal

wrench

*4to5turns

Stopvalve

forLIQUID

Pressuregauge

(forR410A)

Precautionswhenus-

ingthecontrolvalve

Whenattachingthecontrolvalve

totheserviceport,valvecoremay

deformorloosenifexcesspres-

sureisapplied.Thismaycause

gasleak.

Serviceport

Chargehose

(forR410A)

Body Close

Open

Controlvalve

Whenattachingthecontrolvalveto

theserviceport,makesurethatthe

valvecoreisinclosedposition,and

then tighten partA. Do nottighten

partA orturnthebodywhenvalve

coreisinopenposition.

4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

Stopvalvecap

(Torque24.4to

30.4N•m,250to

310kgf•cm)

Serviceportcap

(Torque10to12N•m,

100to120kgf•cm)

Serviceportcap

(Torque10to12N•m,

100to120kgf•cm)

Stopvalvecap

(Torque21.5to

27.5N•m,220

to280kgf•cm)

3. FLARING WORK AND PIPE CONNECTION

BH79A274H01_en.indd 5 2016/03/23 10:42:18

En-6

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 CHARGE

Performgaschargetounit.

1)Connectgascylindertotheserviceportofstopvalve.

2)Performairpurgeofthepipe(orhose)comingfromrefrigerantgascylinder.

3)Replenishspeciedamountoftherefrigerant,whileoperatingtheairconditioner

for cooling.

Note:

Incaseofaddingrefrigerant,complywiththequantityspeciedfortherefrigerat-

ing cycle.

CAUTION:

Whenchargingtherefrigerantsystemwithadditionalrefrigerant,besuretouse

liquidrefrigerant.Addinggasrefrigerantmaychangethecompositionoftherefriger-

antinthesystemandaffectnormaloperationoftheairconditioner.Also,charge

theliquidrefrigerantslowly,otherwisethecompressorwillbelocked.

Tomaintain the highpressure of thegas cylinder, warm the gas cylinder with

warmwater(under40°C)duringcoldseason.Butneverusenakedreorsteam.

COOL/DRY HEAT

• Descriptionofthefunction:

 Withthisfunction, once theoperationmodeis locked toeitherCOOL/DRYmodeor

HEATmode,theairconditioneroperatesinthatmodeonly.

* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunc-

tiontoyourcustomersandaskthemwhethertheywanttouseit.

[How to lock the operation mode]

1)Besuretoturnoffthemainpowerfortheairconditionerbeforemakingthesetting.

2)Setthe“3”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.

3)TolocktheoperationmodeinCOOL/DRY mode,setthe“4”ofSW1onthe outdoor

controllerboardtoOFF.TolocktheoperationinHEATmode,setthesameswitchto

ON.

4)Turnonthemainpowerfortheairconditioner.

• Descriptionofthefunction:

 Withthisfunction,theoperatingnoiseoftheoutdoorunitcanbeloweredbyreducingtheoperationload,forexample,duringnighttimeinCOOLmode.

However,pleasenotethatthecoolingandheatingcapacitymaylowerifthisfunctionisactivated.

* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.

Union

Stopvalve

Liquid

pipe

Indoor

unit

Stopvalvewith

serviceport

Gas

pipe

Refrigerant gas

cylinder

operatingvalve

(forR410A)

Gaugemanifold

valve(forR410A)

Chargehose

(forR410A)

RefrigerantgascylinderforR410Awithsiphon

Electronic scale for refrigerant charging

Refrigerant(liquid)

Outdoor

unit

Union

SW1

1 2 3 4 5 6

SW1

1 2 3 4 5 6

SW1

1 2 3 4 5 6

Lowertheoperatingnoise

[How to lower the operating noise]

1)Besureto turn off themainpowerfortheairconditionerbeforemaking the

setting.

2)Setthe“5”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.

3)Turnonthemainpowerfortheairconditioner.

LED

SW1

SW871

SW2

Terminalblock

forDREDInterface

BH79A274H01_en.indd 6 2016/03/23 10:42:18

En-7

4-5. TEST RUN

• Testrunsoftheindoorunitsshouldbeperformedindividually.Seetheinstallationmanualcomingwiththeindoorunit,andmakesurealltheunitsoperate

properly.

• Ifthetestrunwithalltheunitsisperformedatonce,possibleerroneousconnectionsoftherefrigerantpipesandtheindoor/outdoorunitconnectingwires

cannotbedetected.Thus,besuretoperformthetestrunonebyone.

About the restart protective mechanism

Oncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnotoperatefor3minutestoprotecttheairconditioner.

Wiring/piping correction function

Thisunithasawiring/pipingcorrectionfunctionwhichcorrectswiringandpipingcombination.Whenthereispossibilityofincorrectwiringandpipingcombi-

nation,andconrmingthecombinationisdifcult,usethisfunctiontodetectandcorrectthecombinationbyfollowingtheproceduresbelow.

Makesurethatthefollowingisdone.

• Powerissuppliedtotheunit.

• Stopvalvesareopen.

Note:

Duringdetection,theoperationoftheindoorunitiscontrolledbytheoutdoorunit.Duringdetection,theindoorunitautomaticallystopsoperation.Thisisnot

a malfunction.

Procedure

Pressthepiping/wiringcorrectionswitch(SW871)1minuteormoreafterturningonthe

powersupply.

• Correctioncompletesin10to20minutes.Whenthecorrectioniscompleted,itsresult

isshownbyLEDindication.Detailsaredescribedinthefollowingtable.

• Tocancelthisfunctionduringitsoperation,pressthepiping/wiringcorrectionswitch

(SW871)again.

• Whenthecorrectioncompletedwithouterror,donotpressthepiping/wiringcorrection

switch(SW871)again.

When the result was “cannot be corrected”, press thepiping/wiring correction switch

(SW871)againtocancelthisfunction.Then,conrmthewiringandpipingcombinationin

aconventionalmannerbyoperatingtheindoorunitsonebyone.

• Theoperationisdonewhilethepowerissupplied.Makesurenottocontactpartsother

thantheswitch,includingtheP.C.board.Thismaycauseelectricshockorburnbyhot

partsandlivepartsaroundtheswitch.ContactingthelivepartsmaycauseP.C.board

damage.

• TopreventelectroniccontrolP.C.boarddamage,makesuretoperformstaticelimination

beforeoperatingthisfunction.

• Thisfunctiondoesnotoperatewhentheoutsidetemperatureis0°Corbelow.

LED indication during detection:

LED1

(Red)

LED2

(Yellow)

LED3

(Green)

Lighted Lighted Once

Result of piping/wiring correction function

LED1

(Red)

LED2

(Yellow)

LED3

(Green)

Result

Lighted Not lighted Lighted

Completed

(Problemcorrectedor

normal)

Once Once Once

Notcompleted

(Detectionfailed)

Otherindications

Referto“SAFETYPRE-

CAUTIONSWHENLED

BLINKS”locatedbehind

theservicepanel.

4-6. EXPLANATION TO THE USER

• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairlters,

howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.).

• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.

Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmosphere.

1)Turnoffthebreaker.

2)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.

3)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.

4)Turnonthebreaker.

5)StarttheemergencyCOOLoperationonalltheindoorunits.

6)Whenthepressuregaugeshows0–0.05MPa[Gauge](approx.0–0.5kgf/cm

),fullyclosethestopvalveonthegaspipesideoftheoutdoorunitand

stoptheoperation.(Refertotheindoorunitinstallationmanualaboutthemethodforstoppingtheoperation.)

 * Iftoomuchrefrigeranthasbeenaddedtotheairconditionersystem,thepressuremaynotdropto0–0.05MPa[Gauge](approx.0–0.5kgf/cm

),or

theprotectionfunctionmayoperateduetothepressureincreaseinthehigh-pressurerefrigerantcircuit.Ifthisoccurs,usearefrigerantcollectingdevice

tocollectalloftherefrigerantinthesystem,andthenrechargethesystemwiththecorrectamountofrefrigerantaftertheindoorandoutdoorunitshave

been relocated.

7)Turnoffthebreaker.Removethepressuregaugeandtherefrigerantpiping.

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

The compressor may burst and cause injury if any foreign substance, such as air, enters the pipes.

WARNING

5. PUMPING DOWN

BH79A274H01_en.indd 7 2016/03/23 10:42:18