Mitsubishi Electric MFZ-KJ25VE User manual
FLOOR TYPE AIR CONDITIONERS
MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE MFZ-KJ60VE
English
INSTALLATION MANUAL For INSTALLER
• When installing multi units, refer to the installation manual of the multi unit for
outdoorunitinstallation.
Note:
Thesemodelscanbeconnectedtothemultiunits,exceptforKJ60.
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CONTENTS
1. BEFOREINSTALLATION....................................1
2. INDOORUNITINSTALLATION...........................3
3. OUTDOORUNITINSTALLATION.......................6
4. PURGINGPROCEDURES,LEAKTEST,AND
TESTRUN...........................................................7
5. PUMPINGDOWN................................................7
1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
1-2. SELECTING THE INSTALLATION LOCATION
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
25,35class65mm/
50,60class75mm
holesawTorquewrench
Wrench(orspanner)
4mmhexagonalwrench
FlaretoolforR410A
GaugemanifoldforR410A
VacuumpumpforR410A
ChargehoseforR410A
Pipecutterwithreamer
nDo not install the unit by yourself (user).
Incompleteinstallationcouldcausefire,electric
shock, injury due to the unit falling, or leakage of
water.Consultthedealerfromwhomyoupurchased
theunitoraqualiedinstaller.
nPerform the installation securely referring to the
installation manual.
Incompleteinstallationcouldcausefire,electric
shock, injury due to the unit falling, or leakage of
water.
nWhen installing the unit, use appropriate protec-
tive equipment and tools for safety.
Failuretodosocouldcauseinjury.
nInstall the unit securely in a place which can
bear the weight of the unit.
Iftheinstallationlocationcannotbeartheweightof
theunit,theunitcouldfallcausinginjury.
n Electrical work should be performed by a quali-
ed, experienced electrician, according to the
installation manual. Be sure to use an exclusive
circuit. Do not connect other electrical appli-
ances to the circuit.
Ifthe capacity of the powercircuit is insufcient or
thereisincompleteelectricalwork,itcouldresultin
areoranelectricshock.
nEarth the unit correctly.
Donotconnecttheearthtoagaspipe,waterpipe,
lightningrodortelephone earth. Defectiveearthing
couldcauseelectricshock.
n Do not damage the wires by applying excessive
pressure with parts or screws.
Damagedwirescouldcausereorelectricshock.
n Be sure to cut off the main power in case of set-
ting up the indoor P.C. board or wiring works.
Failuretodosocouldcauseelectricshock.
n Use the specied 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 inter-
mediate connection.
Incomplete connecting and securing could cause
re.
n Do not install the unit in a place where inam-
mable gas may leak.
Ifgasleaksandaccumulatesintheareaaroundthe
unit,itcouldcauseanexplosion.
nDo not use intermediate connection of the
power cord or the extension cord and do not
connect many devices to one AC outlet.
Itcouldcauseareoranelectricshockduetode-
fective contact, defective insulation, exceeding the
permissiblecurrent,etc.
n Be sure to use the parts provided or specied
parts for the installation work.
Theuseofdefectivepartscouldcauseaninjuryor
leakageofwaterduetoare,anelectricshock,theunit
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 com-
pletely into the outlet.
Ifthereisdust,clogging,orloosepartsonthe power
supplyplugortheoutlet,itcouldcauseelectricshock
or re. If loose parts are found on the power supply
plug,replaceit.
n Attach the electrical cover to the indoor unit and
the service panel to the outdoor unit securely.
Iftheelectricalcoveroftheindoorunitand/ortheserv-
icepaneloftheoutdoorunitarenotattachedsecurely,
itcouldresultinareoranelectricshockduetodust,
water,etc.
n When installing, relocating, or servicing the unit,
make sure that no substance other than the
specied refrigerant (R410A) enters the refriger-
ant circuit.
Anypresenceofforeignsubstancesuchasaircan
causeabnormalpressureriseandmayresultin
explosionorinjury.Theuseofanyrefrigerantother
than that specified for the system will cause me-
chanical failure, system malfunction, or unit break-
down.Intheworstcase,thiscouldleadtoaserious
impedimenttosecuringproductsafety.
n Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, venti-
late the room.
If refrigerant comes in contact with a re, harmful
gascouldbegenerated.
n Check that the refrigerant gas does not leak
after installation has been completed.
Ifrefrigerantgasleaksindoors,andcomesinto
contactwiththeameofafanheater,spaceheater,
stove,etc.,harmfulsubstanceswillbegenerated.
n Use appropriate tools and piping materials for
installation.
ThepressureofR410Ais1.6timesmorethanR22.
Notusingappropriatetoolsormaterialsandincom-
plete installation could cause the pipes to burst or
injury.
n When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant pipes.
If the refrigerant pipes are disconnected while the
compressor is running and the stop valve is open,
aircouldbedrawninandthepressureintherefrig-
eration cycle could become abnormally high. This
couldcausethepipestoburstorinjury.
n When installing the unit, securely connect the
refrigerant pipes before starting the compres-
sor.
If the compressor is started before the refrigerant
pipesareconnectedand whenthestopvalveis
open,aircouldbedrawninandthepressureinthe
refrigeration cycle could become abnormally high.
Thiscouldcausethepipestoburstorinjury.
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
longperiodandcauserefrigerantleakage.
n The unit shall be installed in accordance with
national wiring regulations.
nInstall an earth leakage breaker depending on
the installation place.
Ifanearthleakagebreakerisnotinstalled,itcould
causeelectricshock.
nPerform the drainage/piping work securely ac-
cording to the installation manual.
Ifthereisdefectinthedrainage/pipingwork,water
coulddropfromtheunit,soakinganddamaging
householdgoods.
n Do not touch the air inlet or the aluminum ns
of the outdoor unit.
Thiscouldcauseinjury.
nDo not install the outdoor unit where small ani-
mals may live.
If small animals enter and touch the electric parts
insidetheunit,itcouldcauseamalfunction,smoke
emission,orre.Also,adviseusertokeepthearea
aroundtheunitclean.
WARNING (Couldleadtodeath,seriousinjury,etc.)
ENGLISH
INDOOR UNIT
• Whereairowisnotblocked.
• Whereairspreadsovertheentireroom.
• Rigidwallwithoutvibration.
• Where it is not exposed to direct sunshine. Do not
exposetodirectsunshinealsoduringtheperiodfol-
lowingunpackingtobeforeuse.
• Whereeasilydrained.
• At a distance 1 m or more away from your TV and
radio. Operation of the air conditioner may interfere
with radio or TV reception. An amplier may be re-
quiredfortheaffecteddevice.
• In a place as far away as possible from uorescent
andincandescentlights.
Inordertomaketheinfraredremotecontroloperatetheair-
conditioner normally. The heat from the lights may cause
deformationortheultravioletmaycausedeterioration.
•
Wheretheairltercanberemovedandreplacedeasily.
REMOTE CONTROLLER
• Whereitiseasytooperateandeasilyvisible.
• Wherechildrencannottouchit.
• Select the position where theindoorunit can receive
thesignal from the remote controller properly.Check
that signals from the remote controller are surely re-
ceivedbytheindoor unit fromthatposition(‘beep’or
‘beepbeep’receivingtonesounds). After that,attach
remote controller holder to a pillar or wall and install
wirelessremotecontroller.
Note:
Inroomswhereinvertertypefluorescentlampsare
used,thesignalfromthewirelessremotecontrollermay
notbereceived.
OUTDOOR UNIT
• Whereitisnotexposedtostrongwind.
• Whereairowisgoodanddustless.
• Whererainordirectsunlightcanbeavoidedasmuch
aspossible.
• Where neighboursarenotannoyedbyoperation
soundorhotair.
• Whererigidwallorsupportisavailabletopreventthe
increaseofoperationsoundorvibration.
• Wherethereisnoriskofcombustiblegasleakage.
• When installing the unit at a high level, be sure to
securetheunitlegs.
• Whereitisatleast3mawayfromtheantennaof
TV set or radio. Operation of the air conditioner may
interferewithradioorTVreceptioninareaswherere-
ceptionisweak.Anampliermay berequiredforthe
affecteddevice.
• Installtheunithorizontally.
• Pleaseinstallitinanareanotaffectedbysnowfallor
blowingsnow.In areas with heavy snow, please in-
stallacanopy,apedestaland/orsomebafeboards.
Note:
Itisadvisabletomakeapipingloopnearoutdoorunit
soastoreducevibrationtransmittedfromthere.
Note:
Whenoperatingtheairconditionerinlowoutsidetem-
perature, be sure to follow the instructions described
below.
• Never installtheoutdoorunitinaplacewhere
its air inlet/outlet side may be exposed directly to
wind.
• To prevent exposure to wind, install the outdoor
unitwithitsairinletsidefacingthewall.
• To prevent exposure to wind, it is recommended
toinstallabafeboardontheairoutletsideofthe
outdoorunit.
Avoid the following places for installation where air
conditionertroubleisliabletooccur.
• Whereammablegascouldleak.
• Wherethereismuchmachineoil.
• 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
changedanddamaged).
• Saltyplacessuchastheseaside.
• Wheresulfidegasisgeneratedsuchasahot
spring.
• Where there is high-frequency or wireless equip-
ment.
• Where there is emission of high levels of VOCs,
includingphthalatecompounds,formaldehyde,
etc.,whichmaycausechemicalcracking.
Model names are indicated in 1-3.
Wheninstallingmultiunits,referto
theinstallationmanualofthemulti
unitforoutdoorunitinstallation.
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Indoorunit
Wallhole
sleeve(C)
Cutofftheextra
length. Pipexingband
(E)
Wallholecover(D)
Sealthewallhole
gapwithputty(H).
Fixthepipetowall
withpipexing
band(E).
Fixingscrew
(F)
1-3. SPECIFICATIONS
1-4. INSTALLATION DIAGRAM
ACCESSORIES
Checkthefollowingpartsbeforeinstallation.
(1) Drainhose* 1
(2) Remotecontrollerholder 1
(3) Fixingscrewfor(2)3.5×16mm(Black) 2
(4) Pipecover 1
(5) Band 2
(6) Battery(AAA)for(12) 2
(7) Indoorunitmountingbracket 1
(8) Fixingscrewfor(7)4×25mm 5
(9) Woodscrewforindoorunitxation 4
(10) Washerof(9) 4
(11) Felttape(Forleftorleft-rearpiping) 1
(12) Wirelessremotecontroller 1
(13) Aircleaninglter 2
* Note:
TheDrainhoseisconnectedtotheunit.
<Outdoorunit>
(14) Drainsocket(VEtypeonly) 1
Unitsshouldbeinstalledbylicensed
contractoraccordingtolocalcode
requirements.
Aftertheleaktest,applyinsulatingmaterialtightlysothatthereisnogap.
Besuretousewallhole
sleeve(C)topreventindoor/
outdoorconnectingwire(A)
fromcontactingmetalparts
inthewallandtoprevent
damagebyrodentsincase
thewallishollow.
PARTS TO BE PROVIDED AT YOUR SITE
(A) Indoor/outdoorunitconnectingwire* 1
(B) Extensionpipe 1
(C) Wallholesleeve 1
(D) Wallholecover 1
(E) Pipexingband 2to5
(F) Fixingscrewfor(E)4×20mm 2to5
(G) Pipingtape 1
(H) Putty 1
(I)
Drainhose
(orsoftPVChose,15mminnerdia.or
hardPVCpipeVP16) 1 or 2
(J) Refrigerationoil 1
(K) Powersupplycord* 1
* Note:
Placeindoor/outdoorunitconnectingwire(A)and
powersupplycord(K)atleast1mawayfromtheTV
antennawire.
150mmorbelow
fromtheoor
100mmormore
Noobstruction
100mmormore
*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 Usewiresinconformitywithdesign60245IEC57.
*3 Never use pipes with thickness less than specied. The
pressureresistancewillbeinsufcient.
*4 Useacopperpipeoracopper-alloyseamlesspipe.
*5 Becarefulnottocrushorbendthepipeduringpipebend-
ing.
*6 Refrigerantpipebendingradiusmustbe100mmormore.
*7 Ifpipe lengthexceeds7 m,additionalrefrigerant(R410A)
charge is required. (No additional charge is required for
pipelengthlessthan7m.)
Additionalrefrigerant=A×(pipelength(m)–7)
*8 Insulation material : Heat resisting foam plastic 0.045
specicgravity
*9 Be sure to use the insulation of specied thickness. Ex-
cessive thickness may cause incorrect installation of the
indoorunitandinsufcientthicknessmaycausedewdrip-
page.
*10
Singleconnectiononly.
Model Powersupply*1 Wirespecications*2 Pipesize
(thickness*3,*4)
Indoorunit Outdoorunit Rated
Voltage Frequency Breaker
capacity
Powersupply
(3-core)
Indoor/outdoor
connectingwire Gas/Liquid
MFZ-KJ25VE
MFZ-KJ35VE
MUFZ-KJ25VE
MUFZ-KJ35VE
230V 50Hz
10A 1.0mm2
4-core
2.0mm2
ø9.52/6.35mm
(0.8mm)
MFZ-KJ50VE MUFZ-KJ50VE(HZ) 16A 2.0mm2ø12.7/6.35mm
(0.8mm)
MFZ-KJ60VE*10 MUFZ-KJ60VE(HZ) 20A
(KJ25,35/KJ50,60)
Pipelengthandheightdifference
Max.pipelength 20/30m
Max.heightdifference 12/15m
Max.numberofbends*5,*6 10
RefrigerantadjustmentA*7 30/20g/m
Insulationthickness*8,*9 8mm
(KJ25,35/KJ50,60)
100/500mmormore
100mm
ormore
(KJ25,35/KJ50,60)
200/500mmormore
350mm
ormore
100mm
ormore
Appearanceofthe
outdoorunitmaydiffer
fromsomemodels.
Airinlet
Airoutlet
Outdoor unit installation(KJ25,35/KJ50,60)
2/4-10mm×21mmslot
800/840mm
150/175
mm 500mm
344.5/390mm
285/330mm
304-325/349-371mm
40mm
Whenthepipingistobeattachedtoawallcontainingmetals(tin
plated)ormetalnetting,useachemicallytreatedwoodenpiece20
mmorthickerbetweenthewallandthepipingorwrap7to8turnsof
insulationvinyltapearoundthepiping.
Touseexistingpiping,performCOOLoperationfor30minutesand
pumpdownbeforeremovingtheoldairconditioner.Remakeare
accordingtothedimensionfornewrefrigerant.
Drain piping for outdoor unit
<VE type only>
•Providedrainpipingbeforeindoorandoutdoor
pipingconnection.
•Connectdrainhose(I)I.D.15mmasshownin
theillustration.
•Makesuretoprovidedrainpipingwithadown-
hillgradeforeasydrainow.
(14) (I)
Note:
Installtheunithorizontally.
Donotusedrainsocket(14)incoldregions.
Drainmayfreezeandmakethefanstop.
Theoutdoorunitproducescondensateduring
theheatingoperation.Selecttheinstallation
placetoensuretopreventtheoutdoorunitand/
orthegroundsfrombeingwetbydrainwateror
damagedbyfrozendrainwater.
IMPORTANT NOTES
Tocomplywiththerequirements
ofAustralianstandardAS/NZS
3000electricalinstallations(wir-
ingrules),theelectricalwiring
requiredbetweentheindoorand
outdoorunitsmustbeinstalledby
alicencedelectricalcontractor.
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Wall
Outdoor
side
2-2. HOLE DRILLING
1)Determinethewallholeposition.
2)Drilladia.65mmhole(dia.75mmforKJ50/60).Theoutdoorside
shouldbe5to7mmlowerthantheindoorside.
3)Insertwallholesleeve(C).
2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET
• Findastructuralmaterial(suchasastud)inthewallandxbracket(7)horizontallywithxingscrews(8).
• Topreventbracket(7)fromvibrating,besuretoinstallthexingscrewsintheholesindicatedintheillustration.Foraddedsupport,xingscrewsmay
alsobeinstalledinotherholes.
2. INDOOR UNIT INSTALLATION
FORRIGHTDOWNWARDORLEFTDOWN-
WARDPIPING
(Thefollowinggureisaviewofthebottomof
theindoorunitfromabove.)
FORREARORLEFT-REARPIPING
(Thefollowinggureisafrontview
oftheindoorunitinstallationlocation.)
FORLEFTPIPING FORRIGHTPIPING
HOLE POSITIONS
ø65mm(KJ25/35)
ø75mm(KJ50/60) 5-7mm
2-3. INDOOR UNIT PREPARATION
Removethefrontpaneloftheindoorunit.
1)Pushdownthetabonthebothsidesoftheunittoopenthefrontpanel.
2)Pullthefrontpaneltowardyoutoremoveit.
3)Removethe2screws.
4)Opentherearhorizontalvane.
5)Pushthe2locationsonthetopofthepanel,andthenpulltheupperpartofthepaneltowardyou.
6)Removethepanelwhileliftingitup(slightly).
Rearhorizontal
vane
Panel
Panel Push Indoorunit
60
60
6030
6030
Frontpanel
Frontpanel
Indoorunit
Indoor
side
Rearhorizontal
vane
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2-4-3. EMBEDDING THE INDOOR UNIT IN A WALL
1.Makeaholeinthewall.
2.Usingreinforcementmaterial,adjustthedepth.
3.Remove6screwsthatxthebasetotheunit.Removethebasefrom
theunit.
4.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
4
575
740
70
4
333
333
705
2-4. INDOOR UNIT INSTALLATION
2-4-1. INSTALLING THE INDOOR UNIT ON THE FLOOR
1.Placetheindoorunitontheatoor.
2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
2-4-2. MOUNTING THE INDOOR UNIT ON THE WALL
1. Hookthetopoftheindoorunitontheindoorunitmountingbracket(7).
2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
405
137
387
Indoorterminalblock
Indoor/outdoorunit
connectingwire(A)
Outdoorterminalblock
Earthwire
(green/yellow)
• Makeearthwirealittlelongerthanothers.(Morethan45mm)
• Forfutureservicing,giveextralengthtotheconnectingwires.
• Donot foldthe excess wire, or cram it into small space. Take cautionnot to
damagethewires.
• Besuretoattacheachscrewtoitscorrespondentterminalwhensecuringthe
cordand/orthewiretotheterminalblock.
2-5. CONNECTING WIRES FOR INDOOR UNIT
1)RemoveVAclamp.
2)Passindoor/outdoorunitconnectingwire(A)fromthebackoftheindoorunit
andprocesstheendofthewire.
3)Loosen terminal screw, and connect rst the earth wire, then indoor/outdoor
unit connecting wire (A) to the terminal block. Be careful not to make mis-
wiring.Fixthewiretotheterminalblocksecurelysothatnopartofitscoreis
appeared,andnoexternalforceisconveyedtotheconnectingsectionofthe
terminalblock.
4)Firmlytightentheterminalscrewstopreventthemfromloosening.Aftertight-
ening,pullthewireslightlytoconrmthattheydonotmove.
5)Secureindoor/outdoorunitconnectingwire(A)andtheearthwirewiththeVA
clamp.Neverfailtohook theleftclawoftheVAclamp.Attachthe VAclamp
securely.
Terminalblock
Fixingscrew
Indoor/outdoorunit
connectingwire(A)
VAclamp
Leadwire
35mm
15mm
2-6. PIPE FORMING AND INSTALLATION
Pipe Forming
• Routethedrainhosediagonallybelowtheconnectingpipes.
• Makesurethatthedrainhoseisnotroutedupwardandthatthereareno
wavesinthehose.
• Donotpullthehosewhenapplyingthetape.
• Routethepipingsothatitdoesnotprojectpasttherearoftheindoorunit.(Refer
totheguretotheright.)
Connecting Pipe Installation
• Installtheconnectingpipessothatthepipingcanmoveslightlytothefront,
back,left,andright.
Piping
tape
Drainhose
Refrigerant
piping
Pipingbentout-
ward
Push
• Besuretoinsulatetheconnectingpipessothattheydonotcontactthepanel.
• Becarefulnottocrushtheconnectingpipeswhenbendingthem.
Removethecover.
RIGHTDOWNWARDPIPING OTHERPIPING
Band(5)
Pipecover(4)
Band(5)
Reinforcement
material
Unit
Base
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Donotmakedrainpipingasshownbelow.
Accumulated
drainwater
Air
Waving
Water
leakage
Donotraise
Water
leakage
Water
leakage
Tipofdrain
hosedipped
inwater
Ditch
Atleast
50mm
gap
Downward
slope
Drain
hose
Softhose
I.D.15mm
Drainhose
Hardvinylchloride
pipeI.D.30mm
Insert
securely
Different
diameterjoint
70cmor
more
Fig.1 Fig.2 Fig.3
2-7. DRAIN PIPING
• Iftheextensiondrainhosehastopassthrougharoom,besuretowrapitwithcommerciallysoldinsulation.
• Thedrainhoseshouldpointdownwardforeasydrainow.(Fig.1)
• Ifthedrainhoseprovidedwiththeindoorunitistooshort,connectitwithdrainhose(I)thatshouldbeprovidedatyoursite.(Fig.2)
• Whenconnectingthedrainhosetothehardvinylchloridepipe,besuretoinsertitsecurelyintothepipe.(Fig.3)
2-8. FRONT PANEL INSTALLATION
1)Opentherearhorizontalvane.
2)Attachthepanel.Makesurethatthecatchesareengaged.
3)Fixthepanelwithscrews.
4)Insertthebottompartofthefrontpanel.
5)Push3placesontheupperpartofthefrontpaneltocloseit.
Wrap the felt tape (11) tightly around the pipes and hose starting near where
thepipesandhoseareroutedfromtheindoorunit.(Theoverlapwidthofthefelt
tape(11)shouldnotbemorethan1/2ofthetapewidth.)
Felttape(11)
Startwrappingthepipingtape(G)around
thepipesandhose10mminsidethe
indoorunit.
Fastentheendofthefelttape(11)with
abandagestopper.
Makesurethatthedrainhose
isnotroutedupward.
FORLEFTORLEFT-REARPIPING
Bundletheconnectingpipesanddrainhosetogether,andthenwraptheminfelt
tape(11).
Cutandusethelowersidepanelsontheleftandrightsidesoftheindoorunitas
shownbelow.
Smooththecutedgesofthesidepanelssothattheywillnotdamagetheinsulation
coating.
• Forleftorrightpiping
• Installingushagainstawallwithmolding
Molding
Cutthelowersidepanelsto
matchtheheightofthemolding.
Fig.5
Projection
Makesureto
hookthecatch.
Drainhose
Pullthehoseto
conrmitiscon-
nectedsecurely.
Fig.4
The Drain hose is removed at installation.
• When routing the drain piping, make sure that the drain
hose(1)isroutedasshown.(Fig.4)
• Insertthedrainhoseallthewaytothebaseofthedrain
pan(endconnection).(Fig.5)
Makesurethatthecatchofthedrainhoseissecurely
hookedontotheprojectiononthehosettingofthedrain
pan.
• Afterconnectingthedrainhose,besuretopullthehoseto
conrmthatitisconnectedsecurely.
Frontpanel
Indoorunit
Indoorunit
Panel
Panel
2-9. CONNECTING AN INTERFACE (option)/CONNECTOR CABLE (option) TO THE AIR CONDITIONER
Thinpartoftheconnectingcable.
Placethispartwherecustomers
cannottouchit.
Roomair
conditioner Mainbodyofaninterface
Thickpartoftheconnectingcable
Indoorcontrol
P.C.board
CN105forinterface
CN104forconnectorcable
• Connectaninterface/connectorcabletotheindoorcontrolP.C.
boardofanairconditionerwithaconnectingcable.
• Cuttingorextendingtheconnectingcableoftheinterface/
connectorcableresultsindefectsinconnecting.Donot
bundletheconnectingcabletogetherwithpowersupplycord,
indoor/outdoorconnectingwire,and/orearthwire.Keepas
muchdistanceaspossiblebetweentheconnectingcableand
thosewires.
• Thethinpartoftheconnectingcableshouldbestoredand
placedwherecustomerscannottouchit.
Rearhorizontal
vane
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1)Removethepanel.
2)OpenthecoveroftheindoorcontrolP.C.board.
3)JointheconnectingcabletoCN105and/orCN104ontheindoorcontrolP.C.board.
4)Routetheconnectingcablethroughthispointinthegure.
5)Attachthecableclampprovidedwithinterface/connectorcabletothethickpartofthe
connectingcablewithascrew4×16asshowninthegure.
6)ClosethecoveroftheindoorcontrolP.C.board.Becarefulnottocatchthethinpart
oftheconnectingcableinthecover.Reinstallthepanel.
5)
4)
3)CN105
WARNING
Fix the connecting cable at the prescribed position securely.
Incorrect installation may cause electric shock, re, and/ or malfunction.
3. OUTDOOR UNIT INSTALLATION
3-2. FLARING WORK
1)Cutthecopperpipecorrectlywithpipecutter.(Fig.1,2)
2)Completelyremoveallburrsfromthecutcrosssectionofpipe.(Fig.3)
• Puttheendofthecopperpipetodownwarddirectionasyouremoveburrsin
ordertoavoidtoletburrsdropinthepiping.
3)Removearenutsattachedtoindoorandoutdoorunits,thenputthemonpipehaving
completedburrremoval.(Notpossibletoputthemonafteraringwork.)
4)Flaringwork(Fig.4,5).Firmlyholdcopperpipeinthedimensionshowninthetable.
SelectAmmfromthetableaccordingtothetoolyouuse.
5)Check
• ComparethearedworkwithFig.6.
• Ifareisnotedtobedefective,cutoffthearedsectionanddoaringworkagain.
3-3. PIPE CONNECTION
• Fastenarenutwithatorquewrenchasspeciedinthetable.
• Whenfastenedtootight,arenutmaybreakafteralongperiodandcauserefrigerantleakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or
frostbite.
Indoor unit connection
Connectbothliquidandgaspipingstoindoorunit.
• Applya thin coatof refrigeration oil (J) onthe ared endsof the pipes.Do notapply refrigeration oilon
screwthreads.Excessivetighteningtorquewillresultindamageonthescrew.
• Forconnection,rstalignthecenter,thentightentherst3to4turnsofarenut.
• Usetighteningtorquetableaboveasaguidelineforindoorunitsideunionjointsection,andtightenusing
twowrenches.Excessivetighteningdamagesthearesection.
Outdoor unit connection
Connectpipestostopvalvepipejointoftheoutdoorunitinthesamemannerappliedforindoorunit.
• Fortightening,useatorquewrenchorspannerandusethesametighteningtorqueappliedforindoorunit.
3-4. INSULATION AND TAPING
1)Coverpipingjointswithpipecover.
2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.
3)Usingpipingtape(G),applytapingstartingfromtheentryofoutdoorunit.
• Stoptheendofpipingtape(G)withtape(withadhesiveagentattached).
• Whenpipinghavetobearrangedthroughaboveceiling,closetorwherethetemperatureandhumidity
arehigh,windadditionalcommerciallysoldinsulationtopreventcondensation.
Pipediameter
(mm)
Nut
(mm)
A(mm) Tighteningtorque
Clutchtype
tool
forR410A
Clutchtype
tool
forR22
Wingnut
typetool
forR22
N•m kgf•cm
ø6.35(1/4”) 17
0to0.5 1.0to1.5
1.5to2.0 13.7to17.7 140to180
ø9.52(3/8”) 22 34.3to41.2 350to420
ø12.7(1/2”) 26 2.0to2.5 49.0to56.4 500to575
- - - -
Copper
pipe
Good
TiltedUnevenBurred
Nogood
Fig.1 Fig.2
Burr Copperpipe
Sparereamer
Pipecutter
Clutchtype
Flaringtool
Fig.4
Fig.3
Smoothall
around
Evenlength
allaround
Insideisshining
withoutany
scratches.
Flarenut
Die
Fig.5 Fig.6
Copper
pipe
Wingnuttype
WARNING
When installing the unit, securely
connect the refrigerant pipes before
starting the compressor.
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1)Opentheservicepanel.
2)Loosenterminalscrew,andconnectindoor/outdoorunitconnectingwire(A)fromthe
indoorunitcorrectlyontheterminalblock.Becarefulnottomakemis-wiring.Fixthe
wiretotheterminalblocksecurelysothatnopartofitscoreisappeared,andnoex-
ternalforceisconveyedtotheconnectingsectionoftheterminalblock.
3)Firmly tighten the terminal screws to prevent them from loosening. After tightening,
pullthewireslightlytoconrmthattheydonotmove.
4)Connectpowersupplycord(K).
5)Fixindoor/outdoorunitconnectingwire(A)andpowersupplycord(K)withthecord
clamp.
6)Closetheservicepanelsecurely.
• Makeearthwirealittlelongerthanothers.(Morethan100mm)
• Forfutureservicing,giveextralengthtotheconnectingwires.
• Besuretoattacheachscrewtoitscorrespondentterminalwhensecuringthecordand/or
thewiretotheterminalblock.
Terminalblock
Cordclamp
Terminalblock
Powersupply
cord(K)
15mm
35mm
Leadwire
<KJ25,35> <KJ50,60>
Indoor/outdoor
unitconnecting
wire(A)
Power supply
cord (K)
Whenmountingthe
interfaceandthe
connectorcable,use
thisscrewtoxthe
connectingcable.
3)CN104
JG79A867H02_en.indd 6 2014/06/25 13:39:04
En-7
Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmos-
phere.
1)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.
2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.
3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0
MPa[Gauge](0kgf/cm2).
4)StarttheemergencyCOOLoperation.
TostarttheemergencyoperationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After15seconds,connectthepower
supplyplugand/orturnonthebreaker,andthenpresstheE.O.SWonce.(TheemergencyCOOLoperationcanbeperformedcontinuouslyforupto
30minutes.)
5)Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm2).
6)StoptheemergencyCOOLoperation.
PresstheE.O.SWtwicetostoptheoperation.
5. PUMPING DOWN
4-4. EXPLANATION TO THE USER
• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairl-
ters,howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.)
• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.
Caution:
• Aftertestrunorremotesignalreceptioncheck,turnofftheunitwiththeE.O.SWortheremotecontrollerbeforeturningoffthepowersupply.Notdo-
ingsowillcausetheunittostartoperationautomaticallywhenpowersupplyisresumed.
To the user
• Afterinstallingtheunit,makesuretoexplaintheuseraboutautorestartfunction.
• Ifautorestartfunctionisunnecessary,itcanbedeactivated.Consulttheservicerepresentativetodeactivatethefunction.Refertotheservicemanual
fordetails.
4-3. AUTO RESTART FUNCTION
Thisproductisequippedwithanautorestartfunction.Whenthepowersupplyisstoppedduringoperation,suchasduringblackouts,thefunctionautomati-
callystartsoperationintheprevioussettingoncethepowersupplyisresumed.(Refertotheoperatinginstructionsfordetails.)
4-2. TEST RUN
Make sure the following is done.
•Panelisinstalledcorrectly.
•Indoorandoutdoorunitsareinstalledcorrectly,andpowerissupplied.
1)PresstheE.O.SWonceforCOOL,andtwiceforHEAToperation.Testrunwillbeperformedfor30minutes.Iftheleftlamp
oftheoperationindicatorblinksevery0.5seconds,inspecttheindoor/outdoorunitconnectingwire(A)formis-wiring.After
thetestrun,emergencymode(settemperature24ºC)willstart.
2)Tostopoperation,presstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.
Checking the remote (infrared) signal reception
PresstheON/OFFbuttonontheremotecontroller(12)andcheckthatanelectronicsoundisheardfromtheindoorunit.Press
theON/OFFbuttonagaintoturntheairconditioneroff.
• Oncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnotoperatefor3minutestopro-
tecttheairconditioner.
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Emergencyoperation
switch(E.O.SW)
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
4-1. PURGING PROCEDURES AND LEAK TEST
Stopvalvefor
GAS
Stopvalvecap
(Torque19.6to
29.4N•m,200
to300kgf•cm)
Vacuumpump(orthevacuum
pumpwiththefunctionto
preventthebackow)
Gaugemanifoldvalve
(forR410A)
Compoundpressuregauge
(forR410A)
–0.101MPa
(–760mmHg)
Handle
Low HandleHigh
Adapterforpre-
ventingtheback
ow
Chargehose
(forR410A)
*Close
*Open
Hexagonalwrench
Precautionswhenusingthecontrolvalve Whenattachingthecontrolvalveto
theserviceport,valvecoremayde-
formorloosenifexcesspressureis
applied.Thismaycausegasleak.
Serviceport
Body
Close
Open
Controlvalve
A
Whenattachingthecontrolvalveto
theserviceport,makesurethatthe
valvecoreisinclosedposition,and
then tighten partA. Do not tighten
partAorturnthebodywhenvalve
coreisinopenposition.
Serviceportcap
(Torque13.7to
17.7N•m,140to
180kgf•cm)
*4to5turns
1)Removeservice port capof stop valveon the side ofthe
outdoorunitgaspipe.(Thestopvalvesarefullyclosedand
coveredincapsininitialstate.)
2)Connectgaugemanifoldvalveandvacuumpumptoserv-
iceportofstop valve on thegaspipeside of theoutdoor
unit.
3)Runthevacuumpump.(Vacuumizeformorethan15min-
utes.)
4)Check the vacuumwith gauge manifold valve, thenclose
gaugemanifoldvalve,andstopthevacuumpump.
5)
Leave as it is for one or two minutes. Make sure pointer
gaugemanifoldvalveremainsinthesameposition.Conrm
thatpressuregaugeshows–0.101MPa[Gauge](–760
mmHg).
6)Removegaugemanifoldvalvequicklyfromserviceportof
stopvalve.
7)Afterrefrigerantpipesareconnectedandevacuated,fully
open all stop valves on both sides of gas pipe and liquid
pipe. Operating without fully opening lowers the perform-
anceandthiscausestrouble.
8)Referto1-3.,andchargetheprescribedamountofre-
frigerant if needed. Be sure to charge slowly with liquid
refrigerant.Otherwise,compositionoftherefrigerantinthe
systemmaybechangedandaffectperformanceoftheair
conditioner.
9)Tightencapofserviceporttoobtaintheinitialstatus.
10)Leaktest
Stopvalve
forLIQUID
Pressuregauge
(forR410A)
Chargehose
JG79A867H02_en.indd 7 2014/06/25 13:39:05
JG79A867H02_en.indd 8 2014/06/25 13:39:05
JG79A867H02_en.indd 9 2014/06/25 13:39:05
JG79A867H02_en.indd 10 2014/06/25 13:39:05
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
JG79A867H02
JG79A867H02_cover.indd 1 2014/06/05 16:14:08
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