Mitsubishi Electric NTXFKs12a112a Series User manual

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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.
NOTICE D’INSTALLATION POUR L’INSTALLATEUR
• Lorsdel’installationd’unitésmultiples,consultezlanoticed’installationdesuni-
tésexternesmultiples.
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.
FLOOR TYPE AIR CONDITIONERS
NTXFKS09A112A✱ NTXFKS12A112A✱ NTXFKS15A112A✱ NTXFKS18A112A✱
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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
■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.
■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.
■When installing the unit, use appropriate protective equipment and tools
for safety.
 Failuretodosocouldcauseinjury.
■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.
■ 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.
■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.
 Ifrequired,takemeasuresagainstleakagecurrent.
■ Do not damage the wires.
 Damagedwirescouldcausere.
■ 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.
■ 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.
■ 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.
■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.
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
■ Install the unit according to national wiring regulations.
■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.
■ Donottouchtheairinletorthealuminumnsoftheoutdoorunit.
 Thiscouldcauseinjury.
■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
NTXFKS09A112A✱
NTXFKS12A112A✱NTXFKS15A112A✱NTXFKS18A112A✱
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
NTXFKS09/12/15/18A112A✱
1/4(6.35) 0.0315
(0.8) 5/16(8) Heatresistant
foamplastic
0.045Specic
gravity
Forgas
NTXFKS09/12A112A✱3/8(9.52) 0.0315
(0.8) 5/16(8)
NTXFKS15/18A112A✱1/2(12.7) 0.0315
(0.8) 5/16(8)
Limits
Pipelength NTXFKS09/12A112A✱65ft.(20m)max.
NTXFKS15/18A112A✱100ft.(30m)max.
Heightdifference NTXFKS09/12A112A✱40ft.(12m)max.
NTXFKS15/18A112A✱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
NTXFKS09/12A112A✱1.08ozeach5ft.(20g/m)
NTXFKS15/18A112A✱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.
 NTXFKS09/12A112A✱Min.AWG14
 NTXFKS15/18A112A✱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.
BH79A443H01_01En.indd 2 2018/07/25 10:02:09

En-3
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 5
(9) Woodscrewforindoorunitxation 4
(10) Washerof(9) 4
(11)
Felttape(Forleftorleft-rearpiping) 1
(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
(C) Wallholesleeve 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)
1
(K) Refrigerationoil 1
(L) Powersupplycord*2 1
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,perform
COOLoperationfor30min-
utesandpumpdownbefore
removingtheoldaircondi-
tioner.Remakeareaccord-
ingtothedimensionfornew
refrigerant.
(L) (J)
4in.(100mm)
ormore
14in.(350mm)
ormore
8in.(200mm)*4
ormore
4in.(100mm)
or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
40
304~325
5-15/16
<09/12> <15/18>
(J)
(L)
Unit:inch Unit:mm
4in.(100mm)
ormore
4in.(100mm)
ormore
14in.(350mm)
ormore
20in.(500mm)*6
or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
Airinlet
Airinlet Airinlet
Airinlet
6-7/8
15-3/8
13
Airoutlet
2-3/8×13/16slot 1-9/16 40
840
175 500
Airinlet
390 330
349~371
Airoutlet
2-10×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.
Usethewallholesleeve(C)toprevent
indoor/outdoorconnectingwire(A)from
contactingmetalpartsinthewalland
toprotectthewiringfromrodents.
Indoor
unit
Wallhole
sleeve(C)
Cutoffthe
extralength.
Pipeattachment
strap(E)
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)
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.
Note:
• The dimensionsindicatedinthearrows ( ) above
showtherequiredspacetoguaranteeperformanceof
theairconditioner.Installtheoutdoorunitwherethe
maximumpossiblespacecanbeprovided,considering
laterrelocation,services,orrepairs.
• Thecooling/heatingperformanceandtheefciencyof
powerusagemayfallabout10%attheplacewhereshort
cycleislikelyoccurduetopoorventilation.Installingthe
airoutletguide(optional)canimproveperformances.
• Ifairfromtheoutletblowsagainstthewall,itmaycause
stainsonthewall.
Donottakeintheoutletair
dischargedbyotherunitsdirectly.
15-3/4in.ormore
(400mmormore)
39-3/8in.ormore
(1000mmormore)
6in.(150mm)or belowfromtheoor
4in.(100mm)
ormore
Noobstruction
4in.(100mm)
ormore
1-37/64in.
(40mm)or
less
30°orless
1-49/64in.(45mm)ormore
BH79A443H01_01En.indd 3 2018/07/25 10:02:09

En-4
5
5
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
Panel Push Indoorunit
Frontpanel
Frontpanel
Indoorunit
Indoor
side
Rearhorizontal
vane
inch(mm)
BH79A443H01_01En.indd 4 2018/07/25 10:02:10