Mitsubishi MFZ-KJ12NA-U1 Installation guide

FLOOR TYPE AIR CONDITIONERS

MFZ-KJ09NA MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA

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INSTALLATION MANUAL

For INSTALLER

• Wheninstallingmultiunits,refertotheinstallationmanual of the multi unit for

outdoorunitinstallation.

MANUAL DE INSTALACIÓN

PARA EL INSTALADOR

• Alinstalarunidadesmúltiples,consulteelmanualdeinstalacióndelaunidad

múltipleparaobtenerinformaciónsobrelainstalacióndelaunidadexterior.

NOTICE D’INSTALLATION

POUR L’INSTALLATEUR

• Lorsdel’installationd’unitésmultiples,consultezlanoticed’installationdesuni-

tésexternesmultiples.

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

• Besuretoreadthesesafetyprecautionsandinstructions.

• Besuretoobservethewarningsandcautionsspeciedhere.

• Afterreadingthismanual,besuretostoreitwiththeOPERATINGINSTRUCTIONSforfuturereference.

• Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.

CAUTION

(Couldleadtoseriousinjurywhenoperatedincorrectly.)

Required Tools for Installation

Tubebenders

Phillipsscrewdriver

Level

Scale

Utilityknifeorscissors

3in.(75mm)holesaw

Torquewrench

Wrench(orspanner)

5/32in.(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

Wheninstallingmultiunits,refertothe

installationmanualofthemultiunitfor

outdoorunitinstallation.

CONTENTS

1.BEFOREINSTALLATION......................1

2.INDOORUNITINSTALLATION.............4

3.OUTDOORUNITINSTALLATION..........8

4.FLARECONNECTION,PIPE

CONNECTION.......................................9

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

 Improperorincompleteinstallationcouldcausere,electricshock,injury

duetotheunitfalling,orwaterleakage.Consultaqualiedinstallerorthe

dealerfromwhomyoupurchasedtheunit.

n Follow the instructions detailed in the installation manual.

 Incompleteinstallationcouldcausereor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 that 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 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insufcientorthereisincompleteelectri-

calwork,itcouldresultinareoranelectricshock.

n Ground the unit correctly.

 Donotconnectthegroundwiretoagaspipe,waterpipe,lightningrodor

telephoneground.Defectivegroundingcouldcauseelectricshock.

n Do not damage the wires.

 Damagedwirescouldcausere.

n Be sure to shut off the main power when setting up the indoor P.C. board

or wiring.

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

n Usethespeciedwirestosecurelyconnecttheindoorandoutdoorunits.

Attachthewiresrmlytoavoidapplyingstresstotheterminalblock.

 Improperconnectioncouldcausere.

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

 Ifgasleaksandaccumulatesaroundtheunit,itcouldcauseanexplosion.

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

cord. Do not connect many devices to one AC outlet.

 Itcouldcauseareoranelectricshock.

n 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, blockage, or loose parts both in the outlet and on the plug.

Verify that the power supply plug is completely in the outlet.



Ifthereisdust,blockage,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 Securely attach the electrical cover to the indoor unit and the service

panel to the outdoor unit.



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

unitarenotattachedsecurely,dust,water,etc.couldcollectintheunitandcould

causeareoranelectricshock.

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

stanceotherthanthespeciedrefrigerant(R410A)enterstherefrigerant

circuit.

 Anypresenceofforeignsubstancesuchasaircancauseabnormalpressure

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mal-

function,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. Check that the

refrigerant gas does not leak after installation has been completed. If

refrigerant leaks during installation, ventilate the room.

 Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.

 Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofa

fanheater,spaceheater,stove,etc.,harmfulgaseswillbegenerated.

n Use appropriate tools and piping materials for installation.

 ThepressureofR410Ais1.6timeshigherthanR22.Notusingtheappropri-

atetoolsandmaterials,orimproperinstallationcouldcausethepipesto

burstcausinganinjury.

n When pumping down the refrigerant, stop the compressor before discon-

necting 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,causingthepipestoburst.

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

thestopvalveisopen,aircouldbedrawninandthepressureintherefrig-

erationcyclecouldbecomeabnormallyhigh,causingthepipestoburst.

n Fastenaarenutwithatorquewrenchasspeciedinthismanual.

 Iffastenedtootight,aarenutcouldbreakandcauserefrigerantleakage.

n Install the unit according to national wiring regulations.

n Depending on the installation area, install a Ground Fault Interrupt (GFI)

circuit breaker.

 IftheGroundFaultInterrupt(GFI)circuitbreakerisnotinstalled,anelectric

shockcouldoccur.

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

manual.

 Ifthereisdefectinthedrainage/pipingwork,watercoulddripfromtheunit,

anddamagehouseholditems.

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theunitanddamageitselectricalparts,itcouldcause

amalfunction,smokeemission,orre.Keeptheareaaroundtheunitclean.

WARNING

(Couldleadtodeathorseriousinjury.)

1. BEFORE INSTALLATION

5.

PURGINGPROCEDURES,LEAKTEST,

ANDTESTRUN

.....................................10

6.PUMPINGDOWN................................10

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Electricalspecications

MODEL

MFZ-KJ09NA

MFZ-KJ12NA

MFZ-KJ15NA MFZ-KJ18NA

INDOORUNIT

Powersupply(V,PHASE,Hz) 208/230,1,60

Min.CircuitAmpacity (A) 1.0

Fanmotor(F.L.A.) (A) 0.62 0.72

OUTDOORUNIT

Powersupply(V,PHASE,Hz) 208/230,1,60

Max.Fusesize(timedelay)(A) 15 20

Min.CircuitAmpacity (A) 11 16

Fanmotor(F.L.A.) (A) 0.50 0.93

Compressor

(R.L.A.) (A) 8.2 12.0

(L.R.A.) (A) 10.3 15.0

Controlvoltage

Indoorunit-Remotecontroller:(Wireless)

Indoorunit-Outdoorunit:DC12-24V(Polar)

Pipe

Outside

diameter

Minimum

wallthick-

ness

Insulation

thickness

Insulation

material

inch(mm)

Forliquid MFZ-KJ09/12/15/18NA 1/4(6.35)

0.0315

(0.8)

5/16(8)

Heatresistant

foamplastic

0.045Specic

gravity

Forgas

MFZ-KJ09/12NA 3/8(9.52)

0.0315

(0.8)

5/16(8)

MFZ-KJ15/18NA 1/2(12.7)

0.0315

(0.8)

5/16(8)

Limits

Pipelength

MFZ-KJ09/12NA 65ft.(20m)max.

MFZ-KJ15/18NA 100ft.(30m)max.

Heightdifference

MFZ-KJ09/12NA 40ft.(12m)max.

MFZ-KJ15/18NA 50ft.(15m)max.

No.ofbends 10max.

Pipelength

Upto25ft.(7.5m) Noadditionalchargeisrequired.

Exceeding25ft.(7.5m)

Additionalchargeisrequired.

(Refertothetablebelow.)

Refrigeranttobe

added

MFZ-KJ09/12NA 1.08ozeach5ft.(20g/m)

MFZ-KJ15/18NA 1.62ozeach5ft.(30g/m)

1-3. SPECIFICATIONS

1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR

WIRE CONNECTION

• Powershouldbetakenfromanexclusivebranchedcircuit.

•

Wiringworkshouldbebasedonapplicabletechnicalstandards.

• Wiringconnectionsshouldbemadefollowingthediagram.

• Securelytightenscrews.

Connecting wires and the ground wire

• Use solid conductor Min.AWG14 or stranded conductor

Min.AWG14.

• Usedoubleinsulatedcopperwirewith600Vinsulation.

• Usecopperconductorsonly.

 *Followlocalelectricalcodes.

Power supply cable and ground wire

• Usesolidorstrandedconductor.

 KJ09/12NA Min.AWG14

 KJ15/18NA Min.AWG12

• Usecopperconductorsonly.

 *Followlocalelectricalcodes.

Note:

Whentheindoorunitispoweredfromtheoutdoorunit,depend-

ingonlocalcode,adisconnectswitchneedstobeinstalledtoa

powersupplycircuit.

1-3-2. REFRIGERANT PIPES

• Topreventcondensation,insulatethetworefrigerantpipes.

• Refrigerantpipebendingradiusmustbe4in.(100mm)ormore.

CAUTION

Besuretousetheinsulationofspeciedthickness(tableonthe

right).Excessiveinsulationmaycauseincorrectinstallationof

theindoorunit,andtoolittleinsulationmaycausecondensate

toform.

• Theunit hasaredconnectionsonbothindoorandoutdoor

sides.

• Removethevalvecoverfromtheoutdoorunit,thenconnect

thepipe.

• Refrigerantpipesareusedtoconnecttheindoorandoutdoor

units.

• Becarefulnottocrushoroverbendthepipeinpipebending.

• Refrigerantadjustment...Ifpipelengthexceeds25ft.(7.5m),

additionalrefrigerant(R410A)chargeisrequired.

(Theoutdoorunitischargedwithrefrigerantforpipelengthup

to25ft.[7.5m])

1-2. SELECTING THE INSTALLATION LOCATION

INDOOR UNIT

• Whereairowisnotblocked.

• Whereairspreadsovertheentireroom.

• Rigidwallandatoorwithoutvibration.

• Whereitis notexposedtodirectsunlight.Do not

exposetodirectsunlightalsoduringtheperiodfol-

lowingunpackingtobeforeuse.

• Whereeasilydrained.

• Atadistance3ft.(1m)ormoreawayfrom your

TVandradio.Operationoftheairconditionermay

interferewithradioorTVreception.Anampliermay

berequiredfortheaffecteddevice.

• Inaplaceasfarawayaspossiblefromuorescent

andincandescentlights.Inordertomaketheinfrared

remotecontroloperatetheairconditionernormally.

Theheatfromthelightsmaycausedeformationor

theultravioletmaycausedeterioration.

• Wheretheairltercanberemovedandreplaced

easily.

• Whereitisawayfromtheotherheatorsteamsource.

REMOTE CONTROLLER

• Whereitiseasytooperateandeasilyvisible.

• Wherechildrencannottouchit.

• Selectthepositionwheretheindoorunitcanreceive

thesignalfromtheremotecontrollerproperly.Check

thatsignalsfromtheremotecontrolleraresurelyre-

ceivedbytheindoorunitfromthatposition(‘beep’or

‘beepbeep’receivingtonesounds).Afterthat,attach

remotecontrollerholdertoapillarorwallandinstall

wirelessremotecontroller.

Note:

Inrooms where inverter type uorescent lamps are

used, the signal from the wireless remote controller

maynotbereceived.

OUTDOOR UNIT

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

• Whereairowisgoodanddustless.

• Whererainordirectsunlight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operationsoundorvibration.

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

• Wheninstallingtheunitatahighlevel,besureto

securetheunitlegs.

• Whereitisatleast10ft.(3m)awayfromtheantenna

ofTVsetorradio.Operation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and

abafe

boardontheairoutletside.

Avoidthefollowingplacesforinstallationwhereair

conditionertroubleisliabletooccur.

• Whereammablegascouldleak.

• Wherethereisanexcessiveamountofmachine

oilintheair.

• Whereoilissplashedorwheretheareaislled

withoilysmoke(suchascookingareasandfac-

tories,inwhichthepropertiesofplasticcouldbe

changedanddamaged).

• 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 equip-

ment.

• WherethereisemissionofhighlevelsofVOCs,

including phthalate compounds, formaldehyde,

etc.,whichmaycausechemicalcracking.

JG79Y071H02_en.indd 2 2016/01/21 13:19:59

En-3

Indoorunit

Wallhole

sleeve(C)

Cutoffthe

extralength.

Pipeattachment

strap(E)

Usethewallhole

sleeve(C)to

preventindoor/

outdoorconnect-

ingwire(A)from

contactingmetal

partsinthewall

andtoprotect

thewiringfrom

rodents.

Wallholecover(D)

Sealthewallhole

gapwithputty(H).

Attachthepipe

towallwithpipeat-

tachmentstrap(E).

Attachmentscrew(F)

1-4.INSTALLATIONDIAGRAM

ACCESSORIES

Checkthefollowingpartsbeforeinstallation.

<Indoorunit>

(1) Drainhose*1 1

(2) Remotecontrollerholder 1

(3) Screwsfor(2)3.5×16mm(Black) 2

(4) Pipecover 1

(5) Band 2

(6) Battery(AAA)for(12) 2

(7) Indoorunitmountingbracket 1

(8)

Fixingscrewsfor(7)4×25mm

(9) Woodscrewforindoorunitxation 4

(10) Washerof(9) 4

(11)

Felttape(Forleftorleft-rearpiping)

(12) Wirelessremotecontroller 1

Note:

*1TheDrainhoseisconnectedtotheunit.

FIELD-SUPPLIED PARTS

(A) Indoor/outdoorunitconnectingwire*2 1

(B) Extensionpipe 1

(D) Wallholecover 1

(E) Pipexingband 2to5

(F) Fixingscrewfor(E)4×20mm 2to5

(G) Pipingtape 1

(H) Putty 1

(J)

Drainhose

(orsoftPVChose,19/32in.(15mm)in-

nerdiameterorhardPVCpipeVP16)

(K) Refrigerationoil 1

(L) Powersupplycord*2 1

Note:

*2Placeindoor/outdoorunitconnectingwire(A)

andpowersupplycord(L)atleast3ft.(1m)

awayfromtheTVantennawire.

Unitsshouldbeinstalledbylicensedcontractor

accordingtolocalcoderequirements.

Aftertheleaktest,apply

insulatingmaterialtightlyso

thatthereisnogap.

Whenthepipingistobeat-

tachedtoawallcomprisedof

tinplateormetalnetting,use

chemically treated wooden

piece25/32 in. (20 mm) or

thickerbetweenthewalland

thepiping,orwrapinsulation

vinyltape7to8turnsaround

thepiping.

Touseexistingpiping,per-

form COOLoperation for

30minutesandpumpdown

beforeremovingtheoldair

conditioner.Remake flare

accordingtothe dimension

fornewrefrigerant.

(L)

(J)

4

in.

(100



mm)

more

14

in.



(350



mm)

more



in.



(200



mm)



ormore

4in.

(100

mm)

more

Unit:inch Unit:mm

31-1/2

19-11/16

Airinlet

Airoutlet

13-9/16

11-1/4

2-3/8

13/16

slot

12~12-3/4

1-9/16

800

500

Airinlet

Airoutlet

2-10

21slot

344.5

285

150

304~325

5-15/16

(J)

(L)

Unit:inch Unit:mm

in.

(100



mm)

more

4

in.

(100

mm)

more



in.



(350



mm)

ormore

20

in.

(500



mm)



more

Drain piping for outdoor unit

Installtheunithorizontally.

Donotusedrainsocketincoldregions.Drainmayfreezeandmakethefanstop.

Theoutdoorunitproducescondensateduringtheheatingoperation.Selecttheinstallationplacetoensuretopreventtheoutdoorunitand/orthegroundsfrom

beingwetbydrainwaterordamagedbyfrozendrainwater.

33-1/16

13-3/4~14-5/8

19-11/16

Airinlet

6-7/8

15-3/8

Airoutlet

2-3/8x13/16slot

1-9/16 40

840

175 500

Airinlet

390

330

349~371

Airoutlet

2-10x21slot

clear*3

*34in.(100mm)ormorewhenfront

andsidesofunitareclear

*4Whenany2sidesofleft,rightand

rearofunitareclear

clear*5

*520in.(500mm)ormorewhenfront

andsidesofunitareclear

*6Whenany2sidesofleft,rightand

rearofunitareclear

Obstacles above

It’spossibleto

installanobstacle

tothefollowing

area.

6in.(150mm)or

belowfromtheoor

in.

(100



mm)



more

Noobstruction

in.

(100



mm)



more

1-37/64in.

(40mm)or

less

30°orless

1-49/64in.(45mm)ormore

JG79Y071H02_en.indd 3 2016/01/21 13:20:00

En-4

Wall

Outdoor

side

2-2. HOLE DRILLING

1)Determinethewallholeposition.

2)Drillaø3in.(ø75mm)hole.Theoutdoorsideshouldbe6/32to9/32in.(5to

7mm)lowerthantheindoorside.

3)Insertwallholesleeve(C).

2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET

• Findastructuralmaterial(suchasastud)inthewallandxbracket(7)horizontallywithxingscrews(8).

• Topreventbracket(7)fromvibrating,besuretoinstallthexingscrewsintheholesindicatedintheillustration.Foraddedsupport,xingscrewsmayalsobeinstalled

inotherholes.

2. INDOOR UNIT INSTALLATION

6-27/32

(174)

5-7/16

(138)

29-17/32 (750)

12-21/64

(313)

2-7/16

(62)

17-1/4

(438)

23/32 (18)

7/8 (22)

2-3/4

(70)

3-13/16

(97)

3-7/64 (79)

23-5/8 (600)

19/32 (15)

FORRIGHTDOWNWARDORLEFTDOWN-

WARDPIPING

(Thefollowinggureisaviewofthebottomof

theindoorunitfromabove.)

FORREARORLEFT-REARPIPING

(Thefollowinggureisafrontview

oftheindoorunitinstallationlocation.)

FORLEFTPIPING FORRIGHTPIPING

2-3/8

(60)

1-3/16

(30)

2-3/8

(60)

1-3/16

(30)

2-3/8

(60)

2-3/8

(60)

29-17/32 (750)

8-37/64

(218)

6-3/16

(157)

12-21/64

(313)

2-7/16

(62)

8-15/32

(215)

5-45/64

(145)

2-61/64

(75)

5-7/8

(150)

2-3/8

(60)

HOLE POSITIONS

ø3in.(ø75mm)

6/32-9/32in.

(5-7mm)

2-3. INDOOR UNIT PREPARATION

Removethefrontpaneloftheindoorunit.

1)Pushdownthetabonthebothsidesoftheunittoopenthefrontpanel.

2)Pullthefrontpaneltowardyoutoremoveit.

3)Removethe2screws.

4)Opentherearhorizontalvane.

5)Pushthe2locationsonthetopofthepanel,andthenpulltheupperpartofthepaneltowardyou.

6)Removethepanelwhileliftingitup(slightly).

Rearhorizontal

vane

Panel

Push

Indoorunit

Frontpanel

Indoorunit

Indoor

side

Rearhorizontal

vane

inch(mm)

JG79Y071H02_en.indd 4 2016/01/21 13:20:01

En-5

2-4-3.EMBEDDINGTHEINDOORUNITINAWALL

1.Makeaholeinthewall.

2.Usingreinforcementmaterial,adjustthedepth.

3.Remove6screwsthatxthebasetotheunit.Removethebasefromtheunit.

4.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)andwashers

(10).Tightenthescrewssecurely.

22-41/64 (575)

29-9/64 (740)

2-3/4

(

)

27-3/4(705)

2-4.INDOORUNITINSTALLATION

2-4-1.INSTALLINGTHEINDOORUNITONTHEFLOOR

1.Placetheindoorunitontheatoor.

2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)andwashers

(10).Tightenthescrewssecurely.

2-4-2.MOUNTINGTHEINDOORUNITONTHEWALL

1.Hookthetopoftheindoorunitontheindoorunitmountingbracket(7).

2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)andwashers

(10).Tightenthescrewssecurely.

15-15/16(405)

5-25/64

(137)

15-15/64(387)

Reinforcement

material

Unit

Base

Wrapthefelttape(11)tightlyaroundthepipesandhosestartingnearwhere

thepipesandhoseareroutedfromtheindoorunit.(Theoverlapwidthofthe

felttape(11)shouldnotbemorethan1/2ofthetapewidth.)

Felttape(11)

Startwrappingthepipingtape(G)around

thepipesandhose25/64in.(10mm)

insidetheindoorunit.

Fastentheendofthefelttape(11)with

abandagestopper.

Makesurethatthedrainhose

isnotroutedupward.

FORLEFTORLEFT-REARPIPING

Bundletheconnectingpipesanddrainhosetogether,andthenwrapthemin

felttape(11).

Cutandusethelowersidepanelsontheleftandrightsidesoftheindoorunit

asshownbelow.

Smooththecutedgesofthesidepanelssothattheywillnotdamagetheinsula-

tioncoating.

• Forleftorrightpiping

• Installingushagainstawallwithmolding

Molding

Cutthelowersidepanelsto

matchtheheightofthemolding.

Piping

tape

Drainhose

Refrigerantpiping

Indoorunit

Push

Pipingbentoutward

• Besuretoinsulatetheconnectingpipessothattheydonotcontactthe

panel.

• Becarefulnottocrushtheconnectingpipeswhenbendingthem.

 (Useatubebendersforleftorrightpiping.)

• Thepipecovercannotbeattachedwithoutconnectingtheconduitpipe

afterconnectingthepipes.

Removethecover.

RIGHTDOWNWARDPIPING OTHERPIPING

Band(5)

Pipecover(4)

Band(5)

Conduitpipe

8-5/64(205)

6-1/2(165)

inch(mm)

2-5. PIPE FORMING AND INSTALLATION

Note: Referto4.FLARECONNECTION,PIPECONNECTION.

Pipe Forming

• Routethedrainhosediagonallybelowtheconnectingpipes.

• Makesurethatthedrainhoseisnotroutedupwardandthatthereareno

wavesinthehose.

• Donotpullthehosewhenapplyingthetape.

• Routethepipingsothatitdoesnotprojectpasttherearoftheindoorunit.

(Refertotheguretotheright.)

Connecting Pipe Installation

• Installtheconnectingpipessothatthepipingcanmoveslightlytothe

front,back,left,andright.

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• Makeearthwirealittlelongerthanothers.(Morethan45mm)

• Forfutureservicing,giveextralengthtotheconnectingwires.

• Donotfoldtheexcesswire,orcramitintosmallspace.Takecautionnottodamagethe

wires.

• Besuretoattacheachscrewtoitscorrespondentterminalwhensecuringthecordand/

orthewiretotheterminalblock.

INDOOR UNIT

Terminalblock

208/230VAC

1phase,60Hz

Grounding

terminal**

Disconnect

switch*

OUTDOOR UNIT

Groundingterminal**

Ground

Powersupply

208/230VAC,

1phase2wires.

60Hz

Terminal

block1

Remark:

* Adisconnectswitch(15A

MAX)shouldberequired.

Checkthelocalcode.

** Usearingtongueterminal

inordertoconnectaground

wiretoterminal.

Terminalblock2

2-6. CONNECTING WIRES FOR INDOOR UNIT

Note: Whentheindoorunitispoweredfromtheoutdoorunit,dependingonlocalcode,adisconnectswitchneedstobeinstalledtoapowersupplycircuit.

1)Removetheelectricalcover.

2)Removetheconduitplate.

3)Attachtheconduitpipetotheconduitplatewiththelocknut.Theindoor/outdoorunitconnectingwire(A)appearingfromtheinsideofconduitpipeshouldbe

lessthan7/8in.(23mm).(Fig.1)

4)Processtheendofgroundwire(Fig.2).Connectittothegroundterminaloftheelectricalpartsbox.

5)Processtheendofindoor/outdoorunitconnectingwire(A)(Fig.2).Attachittotheterminalblock.Becarefulnottomakemis-wiring.Attachthewiretotheterminal

blocksecurelysothatitscorecannotbeseen,andnoexternalforceaffectstheconnectingsectionoftheterminalblock.

6)Firmlytightentheterminalscrews.Aftertightening,verifythatthewiresaretightlyfastened.

7)Reinstalltheconduitplate.

8)Reinstalltheelectricalcover.

Fig.1

Lead

wire

19/32in.

(15mm)

Fig.2

Terminalblock

Locknut

Electricalcover

Electricalbox

Conduitpipe

Grounding

terminal

Screw

Lessthan7/8in.

(23mm)

Conduitplate

Conduitpipe

Locknut

Conduitplate

Donotmakedrainpipingasshownbelow.

Accumulated

drainwater

Air

Waving

Water

leakage

Donotraise

Water

leakage

Water

leakage

Tipofdrain

hosedipped

inwater

Ditch

Atleast

1-31/32in.

(50mm)gap

Downward

slope

Drain

hose

SofthoseI.D.

19/32in.

(15mm)

Drainhose

Hardvinylchloride

pipeI.D.1-3/16in.

(30mm)

Insert

securely

Differentdiameterjoint

27-9/16in.

(70cm)or

Fig.1 Fig.2 Fig.3

2-7. DRAIN PIPING

• Iftheextensiondrainhosehastopassthrougharoom,besuretowrapitwithcommerciallysoldinsulation.

• Thedrainhoseshouldpointdownwardforeasydrainow.(Fig.1)

• Ifthedrainhoseprovidedwiththeindoorunitistooshort,connectitwithdrainhose(J)thatshouldbeprovidedatyoursite.(Fig.2)

• Whenconnectingthedrainhosetothehardvinylchloridepipe,besuretoinsertitsecurelyintothepipe.(Fig.3)

Fig.5

Projection

Makesureto

hookthecatch.

Drainhose

Pullthehoseto

conrmitiscon-

nectedsecurely.

Fig.4

The Drain hose is removed at installation.

• Whenroutingthedrainpiping,makesurethatthedrainhose

(1)isroutedasshown.(Fig.4)

• Insertthedrainhoseallthewaytothebaseofthedrain

pan(endconnection).(Fig.5)

Makesurethatthecatchofthedrainhoseissecurely

hookedontotheprojectiononthehosettingofthedrain

pan.

• Afterconnectingthedrainhose,besuretopullthehoseto

conrmthatitisconnectedsecurely.

Conduitpipe

Pipe

cover

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1)Removethepanel.

2)OpenthecoveroftheindoorcontrolP.C.board.

3)JointheconnectingcabletoCN105and/orCN24ontheindoorcontrolP.C.

board.

4)Routetheconnectingcablethroughthispointinthegure.

5)Attachthecableclampprovidedwithinterface/connectorcabletothethick

partoftheconnectingcablewithascrew4×16asshowninthegure.

6)ClosethecoveroftheindoorcontrolP.C.board.Becarefulnottocatchthe

thinpartoftheconnectingcableinthecover.Reinstallthepanel.

3)CN105

WARNING

Fix the connecting cable at the prescribed position securely.

Incorrectinstallationmaycauseelectricshock,re,and/ormalfunction.

Whenmountingtheinterface

andtheconnectorcable,use

thisscrewtoxtheconnect-

ingcable.

3)CN24

2-9.CONNECTING AN INTERFACE (option)/CONNECTOR CABLE (option) TO THE AIR CONDITIONER

Thinpartoftheconnectingcable.

Placethispartwherecustomers

cannottouchit.

Roomair

conditioner

Mainbodyofaninterface

Thickpartoftheconnecting

cable

Indoorcontrol

P.C.board

CN105forinterface

CN24forconnectorcable

• Connectaninterface/connectorcabletotheindoorcontrolP.C.boardof

anairconditionerwithaconnectingcable.

• Cuttingorextendingtheconnectingcableoftheinterface/connectorca-

bleresultsindefectsinconnecting.Donotbundletheconnectingcable

togetherwithpowersupplycord,indoor/outdoorconnectingwire,and/or

earthwire.Keepasmuchdistanceaspossiblebetweentheconnecting

cableandthosewires.

• Thethinpartoftheconnectingcableshouldbestoredandplaced

wherecustomerscannottouchit.

2-8. FRONT PANEL INSTALLATION

1)Opentherearhorizontalvane.

2)Attachthepanel.Makesurethatthecatchesareengaged.

3)Fixthepanelwithscrews.

4)Insertthebottompartofthefrontpanel.

5)Push3placesontheupperpartofthefrontpaneltocloseit.

Frontpanel

Indoorunit

Panel

Rearhorizontal

vane

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3-1. CONNECTING WIRES FOR OUTDOOR UNIT

1)Removetheservicepanel.

2)Removetheconduitcover.

3)Attachtheconduitconnectorstotheconduitplatewithlocknutsthensecure

itagainstunitwithscrews.

4)Connectthegroundwiresofindoor/outdoorunitconnectingwire(A)andpower

supplycord(L)totheTBsupport.

5)Loosentheterminalscrews,thenattachindoor/outdoorunitconnectingwire

(A)andpowersupplycord(L)fromtheindoorunitcorrectlytotheterminal

block.Attachthewirestotheterminalblocksecurelysothatthecorescannot

beseen,andnoexternalforceaffectstheconnectingsectionoftheterminal

block.

6)Firmlytightentheterminalscrews.Aftertightening,verifythatthewiresare

tightlyfastened.

7)Installtheconduitcover.

8)Installtheservicepanelsecurely.

3. OUTDOOR UNIT INSTALLATION

Power supply cord (L)

Lead

wire

19/32in.

(15mm)

Terminalblock

Power supply cord (L)

Indoor/outdoorunit

connectingwire(A)

• Makeearthwirealittlelongerthanothers.(Morethan4in.[100mm])

• Forfutureservicing,leavesomeslackintheconnectingwires.

• Besuretoattacheachscrewtoitscorrespondentterminalwhensecuring

thecordand/orthewiretotheterminalblock.

Servicepanel

Locknut

Conduitcover

Conduitplate

Conduitpipe

Grounding

terminal

Grounding

terminal

TBsupport

Terminalblock

toconduitcover

Power supply cord (L)

Indoor/outdoorunit

connectingwire(A)

TBsupport

Servicepanel

Locknut

Conduitcover

Conduit

plate

Conduitpipe

toconduitcover

3-2. PIPE FORMING AND INSTALLATION

Note: Referto4.FLARECONNECTION,PIPECONNECTION.

3-3. INSULATION AND TAPING

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

2)Foroutdoorunitside,insulatethepiping,includingvalves.

3)Applypipingtape(G)startingfromtheconnectionontheoutdoorunit.

• Whenpipinghastobeinstalledthroughaceiling,closetorwherethetem-

peratureandhumidityarehigh,useadditionaleld-suppliedinsulationto

preventcondensation.

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4-1.FLARECONNECTION

1)Cutthecopperpipeasstraightaspossiblewithapipecutter.(Fig.1,2)

2)Removeallburrsfromthecutsectionofthepipe,ensuringthatprecautions

aretakentoavoidgettingmetalshavingsintothepiping.(Fig.3)

3)Removearenutsattachedtoindoorandoutdoorunits,thenputthemon

pipe.

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

table.SelectAinch(mm)fromthetableaccordingtothetoolyouuse.

5)Check

• ComparethearedworkwithFig.6.

• Ifareisdefective,cutoffthesectionandrepeatprocedure.

Pipe

diameter

inch(mm)

Binch

(mm)

Ainch(mm) Tighteningtorque

Clutch

typetool

forR410A

Clutch

typetool

forR22

Wingnut

typetool

forR22

ft-lb

(kgf•cm)

N•m

ø1/4

(6.35)

21/32

(17)

0to0.02

(0to0.5)

0.04to

0.06

(1.0to1.5)

0.06to

0.08

(1.5to2.0)

10to13

(140to180)

13.7to

17.7

ø3/8

(9.52)

7/8(22)

25to30

(350to420)

34.3to

41.2

ø1/2

(12.7)

1-1/32

(26)

0.08to

0.10

(2.0to2.5)

36to42

(500to575)

49.0to

56.4

ø5/8

(15.88)

1-5/32

(29)

54to58

(750to800)

73.5to

78.4

4. FLARECONNECTION,PIPECONNECTION

Copper

pipe

Good

90°

Tilted

Nogood

Fig.1

Burr

Copperpipe

Sparereamer

Pipecutter

Fig.4

Smoothallaround

Evenlength

allaround

Insideis

shining

withoutany

scratches.

Fig.6

Clutchtype

Flaringtool

Wingnuttype

Uneven Burred

Flarenut

Die

Copperpipe

Fig.2

Fig.3

Fig.5

4-2.PIPECONNECTION

• Fastenarenutwithatorquewrenchasspeciedinthetable(referto3-2.).

• Whenfastenedtootight,arenutmayeventuallybreakandcauserefrigerant

leakage.

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

pipingmayresultinburnsorfrostbite.

Indoor unit connection

Connectbothliquidandgaspipingstoindoorunit.

• Applyathincoatofrefrigerationoil(K)onthearedendsofthepipes.Do

notapplyrefrigerationoilonscrewthreads.Excessivetighteningtorquewill

resultindamageonthescrew.

• Toconnect,rstalignthecenter,thentightentherst3to4turnsofarenut.

• Usetighteningtorquetableaboveasaguidelineforindoorunitsidejoints,and

tightenusingtwowrenches.Excessivetighteningdamagesthearesection.

Outdoor unit connection

Connectpipestostopvalvepipejointoftheoutdoorunitfollowingthesame

proceduredetailedinindoorunitconnection.

• Fortightening,useatorquewrenchorspanner.

WARNING

When installing the unit, securely connect the refrigerant pipes before

starting the compressor.

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En-10

5-1. PURGING PROCEDURES AND LEAK TEST

1)

Removeserviceportcapsfromstopvalvesonbothsidesofrefrigerantlines.

(Thestopvalvesarefullyclosedwhenshipped.)Leaveclosed.

2)Connectgaugemanifoldtoportsofstopvalves.

5-4.EXPLANATIONTOTHEUSER

• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousethe

airconditioner(theremotecontroller,removingtheairlters,placingorremov-

ingtheremotecontrollerfromtheremotecontrollerholder,cleaningmethods,

precautionsforoperation,etc.)

• RecommendthattheuserreadtheOPERATINGINSTRUCTIONScarefully.

Stopvalve

forGAS

Stopvalvecap

(Torque15to

22ft-lb,19.6to

29.4N•m,200

to300kgf▪cm)

Vacuumpump(orthe

vacuumpumpwiththe

functiontopreventthe

backow)

Gaugemanifold

valve(forR410A)

Compoundpressure

gauge(forR410A)

–14.7psi[Gauge]

(–0.101Mpa)

Handle

Low

HandleHigh

Adapterfor

preventingthe

backow

Chargehose

(forR410A)

*Close

*Open

Hexagonal

wrench

Precautionswhenusingthe

controlvalve

Whenattachingthecontrolvalve

totheserviceport,valvecoremay

deformorloosenifexcesspressure

isapplied.Thismaycausegasleak.

Serviceport

Chargehose

Body

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.

Serviceportcap

(Torque10to13

ft-Ib,13.7to17.7

N•m,140to180

kgf•cm)

*4to5turns

3)Evacuate the system to 4000 microns from both service valves. System

manifoldgaugesmustnotbeusedtomeasurevacuum.Amicrongaugemust

beusedatalltimes.BreakthevacuumwithNitrogen(N2)intothedischarge

servicevalveto0PSIG.

4)Evacuatethesystemto1500microns.BreakthevacuumwithNitrogen(N2)

intothedischargeservicevalveto0PSIG.

5)Evacuatethesystemto500microns.

6)Closegaugemanifoldvalves,stopthepump,andconducta30minuterise

test.

7)Systemshouldhold500micronsforaminimumof1hour.

8)Fullyopenallstopvalvesonbothsidesofgaspipeandliquidpipe.Operating

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

9)Referto 1-3 and charge the prescribed amount of additional refrigerant if

needed.Besuretochargeslowlywithliquidrefrigerant.Otherwisecomposi-

tionoftherefrigerantinthesystemmaybechangedandaffectperformance

oftheairconditioner.

10)Removegaugemanifoldsandreplaceserviceportcapsandtighten.

11)Leaktest

Stopvalve

forLIQUID

5. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

Pressuregauge

(forR410A)

Caution:

• Aftertestrunorremotesignalreceptioncheck,turnofftheunitwiththe

E.O.SWortheremotecontrollerbeforeturningoffthepowersupply.Ifthis

procedureisnotperformed,theunitwillautomaticallybeginoperationwhen

powersupplyisresumed.

To the user

• Afterinstallingtheunit,explaintotheuseraboutautorestartfunction.

• Ifautorestartfunctionisunnecessary,itcanbedeactivated.Consultthe

servicerepresentativetodeactivatethefunction.Refertotheservicemanual

fordetails.

5-2. TEST RUN

1)Insertpowersupplyplugintothepoweroutletand/or

turnonthebreaker.

2)PresstheE.O.SWonceforCOOL,andtwiceforHEAT

operation.Testrunwillbeperformedfor30minutes.If

theleftlampoftheoperationindicatorblinksevery0.5

seconds,inspecttheindoor/outdoorunitconnecting

wire(A)formis-wiring.Afterthetestrun,emergency

mode(settemperature75°F[24°C])willstart.

3)Tostopoperation,presstheE.O.SWseveraltimes

untilallLEDlampsturnoff.Refertooperatinginstruc-

tionsfordetails.

Checking the remote (infrared) signal reception

PresstheOFF/ONbuttonontheremotecontroller(12)andlistenforan

audibleindicatorfromtheindoorunit.PresstheOFF/ONbuttonagaintoturn

theairconditioneroff.

• Oncethecompressor stops,therestartpreventivedevice operatessothe

compressorwillnotoperatefor3minutestoprotecttheairconditioner.

5-3. AUTO RESTART FUNCTION

Thisproductisequippedwithanautorestartfunction.Whenthepowersupply

iscutoffduringoperation,suchasduringblackouts,thefunctionautomatically

startsoperationintheprevioussettingoncethepowersupplyisresumed.

(Refertotheoperatinginstructionsfordetails.)

Emergencyoperation

switch(E.O.SW)

6. PUMPING DOWN

Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatrefrigerantisnotreleasedintotheatmosphere.

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

2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.

3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0psi[Gauge]

(0Mpa).

4)StarttheemergencyCOOLoperation.

 TostarttheemergencyoperationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After15seconds,connectthepowersupplyplug

and/orturnonthebreaker,andthenpresstheE.O.SWonce.(TheemergencyCOOLoperationcanbeperformedcontinuouslyforupto30minutes.)

5)

Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows(

0.1to0psi[Gauge](0.05to0Mpa))

6)StoptheemergencyCOOLoperation.

 Tostopoperation,presstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.

WARNING

When pumping down the refrigerant, stop the compressor before dis-

connecting the refrigerant pipes. The compressor may burst if air etc.

get into it.

JG79Y071H02_en.indd 10 2016/01/21 13:20:07