Mitsubishi Electric MSZ-HR42VF Installation Manual

CN105
CN104
When the refrigeration circuit has a leak, do not execute pump down with the
compressor.
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
2-1. FIXING OF INSTALLATION PLATE
• Findastructuralmaterial(suchasastud)inthewallandxinstallationplate(1)horizon-
tallybytighteningthexingscrews(2)rmly.
• Topreventinstallationplate(1)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.
• Whentheknockoutisremoved,applyvinyltapetotheknockoutedgestopreventdamag-
ingthewires.
• Whenboltsrecessedintheconcretewallaretobeutilized,secureinstallationplate(1)
using11×20·11×26ovalhole(450mmpitch).
• Iftherecessedboltistoolong,changeitforashorteroneavailableinthemarket.
2-2. WALL HOLE DRILLING
1)Determinethewallholeposition.
2)Drill aø65mmhole.Theoutdoor side should be5 to
7mmlowerthantheindoorside.
3)Insertwallholesleeve(C).
(G)
(E)
(C)
(4)
(D)
(F)
(2)
(1)
*4
(I)
(B)
(A)
(K)
(3)
(5)
1-4. INSTALLATION DIAGRAM
Whenthepipingistobeattachedtoawallcontainingmetals(tinplated)ormetal
netting,useachemicallytreatedwoodenpiece20mmorthickerbetweenthe
wallandthepipingorwrapofinsulationvinyltapearoundthepiping.
To use existing piping, perform COOL operation for 30 minutes and pump
downbeforeremovingtheoldairconditioner.Remakeareaccordingtothe
dimensionfornewrefrigerant.
clear*2
100mm
ormore
100mm
ormore
Note:
*1Place indoor/outdoor unit connecting wire (A) and
powersupplycord(K)atleast1mawayfromtheTV
antennawire.
Aftertheleaktest,applyinsulatingmaterialtightly
sothatthereisnogap.
WARNING
To avoid risk of re, embed or protect the refrigerant piping.
External damage on the refrigerant piping can be cause of re.
(6)
(J)
PARTS TO BE PROVIDED AT YOUR SITE
(A) Indoor/outdoorunitconnectingwire*1 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
(I)
Drainhose
(orsoftPVChose,15mminner
diameterorhardPVCpipeVP30)
1
(J)
Drainhose
(orsoftPVChose,15mminner
diameterorhardPVCpipeVP16)
0or1
(K) Powersupplycord*1 1
ACCESSORIES
Checkthefollowingpartsbeforeinstallation.
<Indoorunit>
(1) Installationplate 1
(2)
Installationplatexingscrew
4×25mm
5
(3) Wirelessremotecontroller 1
(4)
Felttape
(Forleftorleft-rearpiping)
1
(5) Battery(AAA)for(3) 2
<Outdoorunit>
(6) Drainsocket 1
IMPORTANT NOTES
Checkthatcablingwillnotbesubjecttowear,corrosion,excessivepressure,
vibration,sharpedgesoranyotheradverseenvironmentale󰀨ects.Thecheck
shallalsotakeintoaccountthee󰀨ectsofagingorcontinualvibrationfrom
sourcessuchascompressorsorfans.
350mm
ormore
Note:
Installtheunithorizontally.
Donotusedrainsocket(6)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.
Drain piping for outdoor unit
•Providedrainpipingbeforeindoorandoutdoorpip-
ingconnection.
•Connectdrainhose(J)I.D.15mmasshowninthe
illustration.
• Make sure to provide drain piping with a downhill
gradeforeasydrainow.
2. INDOOR UNIT INSTALLATION
Wall
Outdoor
side
ø65mm
5-7mm
Burr
Copperpipe
Sparereamer
Pipecutter
3-2. FLARING WORK
1)Cutthecopperpipecorrectlywithpipecutter.(Fig.1,2)
2)Completelyremoveallburrsfromthecutcrosssection
ofpipe.(Fig.3)
• Puttheendofthecopperpipetodownwarddirection
asyouremoveburrsinordertoavoidtoletburrsdrop
inthepiping.
3)Removearenutsattachedtoindoorandoutdoorunits,
thenputthemonpipehavingcompletedburrremoval.
(Notpossibletoputthemonafteraringwork.)
4)Flaringwork(Fig.4,5).Firmlyholdcopperpipeinthe
dimensionshowninthetable.SelectAmmfromthetable
accordingtothetoolyouuse.
5)Check
• ComparethearedworkwithFig.6.
• Ifareisnotedtobedefective,cuto󰀨thearedsec-
tionanddoaringworkagain.
Pipediameter
(mm)
Nut
(mm)
A(mm) Tighteningtorque
Clutch
typetool
forR32,
R410A
Clutch
typetool
forR22
Wing nut
typetool
forR22
N•m kgf•cm
ø6.35(1/4”) 17
0to0.5 1.0to1.5
1.5to2.0
13.7to
17.7
140to
180
ø9.52(3/8”) 22
34.3to
41.2
350to
420
ø12.7(1/2”) 26
2.0to2.5
49.0to
56.4
500to
575
ø15.88(5/8”) 29
73.5to
78.4
750to
800
Copper
pipe
Good
TiltedUnevenBurred
Nogood
Fig.1
Fig.2
Clutchtype
Flaringtool
Fig.4Fig.3
Smoothall
around
Evenlength
allaround
Inside is shin-
ingwithoutany
scratches.
Flare nut
Die
Fig.5 Fig.6
3. OUTDOOR UNIT INSTALLATION
Copperpipe
Wingnuttype
3-1. CONNECTING WIRES FOR THE OUTDOOR UNIT
1)Opentheservicepanel.
2)Loosenterminalscrew, andconnectindoor/outdoor unitconnectingwire (A)fromthe
indoorunitcorrectlyontheterminalblock.Becarefulnottomakemis-wiring.Fixthewire
totheterminalblocksecurelysothatnopartofitscoreisappeared,andnoexternalforce
isconveyedtotheconnectingsectionoftheterminalblock.
3)Firmlytightentheterminalscrewstopreventthemfromloosening.Aftertightening,pull
thewireslightlytoconrmthattheydonotmove.
4)Connectpowersupplycord(K).
5)
Fixindoor/outdoorunitconnectingwire(A)andpowersupplycord(K)withthecordclamp.
6)Closetheservicepanelsecurely.
• Makeearthwirelongerthanothersaspicture.
• Forfutureservicing,giveextralengthto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.
3-4. INSULATION AND TAPING
1)Coverpipingjointswithpipecover.
2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.
3)Usingpipingtape(G),applytapingstartingfromtheentryofoutdoorunit.
• Stoptheendofpipingtape(G)withtape(withadhesiveagentattached).
• Whenpipinghavetobearrangedthroughaboveceiling,closetorwherethetempera-
ture and humidity are high, wind additional commercially sold insulation to prevent
condensation.
4-1. PURGING PROCEDURES AND LEAK TEST
1)Removeserviceportcapofstopvalveonthesideoftheoutdoorunitgaspipe.(Thestop
valvesarefullyclosedandcoveredincapsininitialstate.)
2)Connectgaugemanifoldvalveandvacuumpumptoserviceportofstopvalveonthegas
pipesideoftheoutdoorunit.
4-2. TEST RUN
1)Insertpowersupplyplugintothepoweroutletand/orturnonthe
breaker.
2)PressingtheE.O.SWwillperformatestrunfor30minutes.
 (ForMSZ,pressingtheswitchoncewillperformCOOLoperation
andtwicewillperformHEAToperation.)Iftheupper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24ºC)willstart.
3)Tostopoperation,presstheE.O.SWseveraltimesuntilallLED
lampsturno󰀨.Refertooperatinginstructionsfordetails.
4)Checkingtheremote(infrared)signalreception
• Press the OFF/ON button on the remote controller (3) and
checkthatanelectronicsoundisheardfromtheindoorunit.
PresstheOFF/ONbuttonagaintoturntheairconditionero󰀨.
• Once the compressor stops, the restart preventive device
operatessothecompressorwillnotoperatefor3
minutesto
protecttheairconditioner.
Stopvalvefor
GAS
Stopvalvecap
(Torque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R32,R410A)
Compoundpressuregauge
(forR32,R410A)
–0.101MPa
(
–760mmHg)
Handle
Low
Handle High
Adapterfor
preventingthe
backow
Chargehose
(forR32,R410A)
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
Body
Close
Open
Control
valve
A
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13.7to
17.7N•m,140to
180kgf•cm)
3)Runthevacuumpump.(Vacuumizeuntil500micronsisachieved.)
4)Checkthevacuumwithgaugemanifoldvalve,thenclosegaugemanifoldvalve,andstop
thevacuumpump.
5)Leaveasitisforoneortwominutes.Makesurepointergaugemanifoldvalveremains
inthesameposition.Conrmthatpressure
gaugeshows–0.101MPa[Gauge](–760
mmHg).
6)Removegaugemanifoldvalvequicklyfromserviceportofstopvalve.
Stopvalve
forLIQUID
Caution:
• Aftertestrunorremotesignalreceptioncheck,turno󰀨theunitwiththeE.O.SWor
theremotecontrollerbeforeturningo󰀨thepowersupply.Notdoingsowillcausethe
unittostartoperationautomaticallywhenpowersupplyisresumed.
To the user
• Afterinstallingtheunit,makesuretoexplain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.
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Pressuregauge
(forR32,R410A)
Charge
hose
4-4. EXPLANATION TO THE USER
• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner
(howtousetheremotecontroller,howtoremovetheairlters,howtoclean,precautions
foroperation,etc.).
• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.
WARNING
To avoid risk of re, make sure that there are no ammable hazards or ignition
risks before opening the stop valves.
7)Afterrefrigerantpipesareconnectedandevacuated,fullyopenthevalvestemofallstop
valvesonbothsidesofgaspipeandliquidpipebythehexagonalwrench.Ifthevalve
stemhitsthestopper,donotturnitanyfurther.Operatingwithoutfullyopeninglowers
theperformanceandthiscausestrouble.
8)Referto1-3.,andchargetheprescribedamountofrefrigerantifneeded.Besuretocharge
slowlywithliquidrefrigerant.Otherwise,compositionoftherefrigerantinthesystemmay
bechangedanda󰀨ectperformanceoftheairconditioner.
9)Tightencapofserviceporttoobtaintheinitialstatus.
10)Leaktest
4-3. AUTO RESTART FUNCTION
Thisproductisequippedwithanautorestartfunction.Whenthepowersupplyisstopped
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.)
Besuretousewallholesleeve(C)
topreventindoor/outdoorconnect-
ingwire(A)fromcontactingmetal
parts in the wall and to prevent
damage by rodents in case the
wallishollow.
Indoorunit
Wallhole
sleeve(C)
Cuto󰀨the
extralength.
Pipexingband(E)
Wallholecover(D)
Fixingscrew(F)
Thisproductisdesignedandintendedforuseintheresidential,commercial
andlight-industrialenvironment.
HEADOFFICE:TOKYOBUILDING,2-7-3,MARUNOUCHI,CHIYODA-KU,
TOKYO100-8310,JAPAN
7. CONNECTING THE INTERFACE/CONNECTOR CABLE TO THE AIR CONDITIONER
Fix the connecting cable at the prescribed position securely. Incorrect installation
may cause electric shock, re, and/or malfunction.
WARNING
Sealthewallhole
gapwithputty(H).
Fixthepipetowall
withpipexingband
(E).
153mm
ormore
59
mmormore/
145
mmormore
forleft/leftrearpiping
(usingspacer)
163
mm
ormore
11mm
ormore
1.8mormorefromtheoor.
Upto2.3misrecommended.
Installationplate(1)
Centerof
ø65mmhole
163 mm
ormore
153 mm
ormore
Ceiling
Wall
Wall
Fixing
screw(2)
Insertthescale.*
Alignthe
scale with
theline.*
100mm
Level
*Sameforlefthole.
Emergencyoperation
switch(E.O.SW)
59mmormore
145mmormoreforleft/leftrear
piping(usingspacer)
• ConnecttheINTERFACE/CONNECTORCABLEtotheIndoorelectroniccontrolP.C.boardoftheairconditionerwiththeconnectingcable.
• CuttingorextendingtheconnectingcableoftheINTERFACE/CONNECTORCABLE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.
1) Removethepanelandthelowerrightcornerbox.
2)OpenthecoversoftheIndoorelectroniccontrolP.C. board.
3)ConnecttheconnectingcabletoCN105*and/orCN104ontheIndoorelectroniccontrolP.C. board.
 Passthethinpartoftheconnectingcablethroughtheribasshowninthegure.
4)AttachthecableclampprovidedwithInterfacetothethickpartoftheconnectingcablewithascrew4×16asshownin
thegure.
5)Passtheconnectingcablethroughtheribasshowninthegure.
6)ClosethecoversoftheIndoorelectroniccontrolP. C.board.Becarefulnottocatchthethinpartoftheconnecting
cableinthecover.Reinstallthepanelandthelowerrightcornerbox.
Airconditioner
Thinpartoftheconnectingcable.
Placethispartwherecustomerscannottouchit.
Thickpartoftheconnectingcable
Indoorelectronic
controlP.C.board
CN105*forINTERFACE
CN104forCONNECTORCABLE
Connecting
5. CONNECTION SETUP OF THE Wi-Fi INTERFACE (VFK type only)
ThisproductisequippedwiththeWi-FiInterfaceasstandard.
RefertotheSETUPQUICKREFERENCEGUIDEandOPERATINGINSTRUCTIONSprovidedwiththeindoorunitforconnectionwiththerouter.
6-1. REMOVING AND INSTALLING THE PANEL ASSEM BLY 6-3. PUMPING DOWN
Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowing
theprocedurebelowsothatnorefrigerantisreleasedintotheatmosphere.
1)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MPa[Gauge](0
kgf/cm²).
4)StarttheemergencyCOOLoperation.
 TostarttheemergencyoperationinCOOLmode,disconnectthepowersupplyplug
and/orturno󰀨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0.05
to0MPa[Gauge](approx.0.5to0kgf/cm²).
6)StoptheemergencyCOOLoperation.
 Press the E.O. SW several times until all LED lamps turn o󰀨. Refer to operating
instructionsfordetails.
6. RELOCATION AND MAINTENANCE
Removal procedure
1)Removethe2screwswhichxthepanelassembly.
2)Removethepanelassembly.Besuretoremoveits
bottomendrst.
Installation procedure
1)Install the panel assembly following the removal
procedureinreverse.
2)Be sure to press the positions as indicated by the
arrowsinordertoattachtheassemblycompletelyto
theunit.
6-2. REMOVING THE INDOOR UNIT
Removethebottomoftheindoorunitfromtheinstal-
lationplate.
Releasebothleftandrightbottompartofindoorunit
andpullitdownwardandforwardasshowninthe
gureontheright.
Close
Open
Valvestem(inside)
Power supply cord (K)
Earth wire
15mm
35mm
100mm
ormore
Others
15mm
35mm
WARNING
When installing the unit, securely connect the refrigerant pipes before starting
the compressor.
Outdoor unit connection
Connectpipestostopvalvepipejointoftheoutdoorunitinthesamemannerappliedfor
indoorunit.
• Fortightening, use atorque wrenchor spannerand usethesame tighteningtorque
appliedforindoorunit.
3mmorless
3-3. PIPE CONNECTION
• Fastenarenutwithatorquewrenchasspeciedinthetable.
• Whenfastenedtootight,arenutmaybreakafteralongperiodandcauserefrigerant
leakage.
• Besuretowrapinsulationaroundthepiping. Directcontactwiththebarepipingmay
resultinburnsorfrostbite.
• Usearednutinstalledtothisindoorunit.
Indoor unit connection
Connectbothliquidandgaspipingstoindoorunit.
• Donotapplyrefrigerationoilonscrewthreads.Excessivetighteningtorquewillresultin
damageonthescrew.
• Forconnection,rstalignthecenter,thentightentherst3to4turnsofarenutbyhand.
• Usetighteningtorquetableaboveasaguidelineforindoorunitsideunionjointsection,
andtightenusingtwowrenches.Excessivetighteningdamagesthearesection.
Flare nut Unionjoint
ExternalthreadsideInternal thread side
Tightenthearenut
withatorquewrench.
Gripthenutonthe
unionjointwithaspanner.
5mmorless
Drain Piping
• Donotcutthedrainhoseoftheunit.(Fig.1)
• Iftheextensiondrainhosehastopassthrougharoom,besuretowrapitwithcom-
merciallysoldinsulation.
• Thedrainhoseshouldpointdownwardforeasydrainow.(Fig.2)
• Ifthedrainhoseprovidedwiththeindoorunitistooshort,connectitwithdrainhose
(I)thatshouldbeprovidedatyoursite.(Fig.3)
• Whenconnectingthedrainhosetothehardvinylchloridepipe,besuretoinsertit
securelyintothepipe.(Fig.4)
• Makesurethatnostressisappliedtotheconnectingportionofthedrainhoseafter
installingtheindoorunit.Otherwise,breakageorwaterleakagemayresult.
• Besuretousethedrainhoseattachedtotheindoorunit.Otherwise,waterleakage
orbreakageduetochemicalmayresult.
• Donotapplyanyagentonthedrainport.Doingsomaycausebreakage.
Donotmakedrainpipingasshownbelow.
Downward
slope
Drain
hose
Softhose
I.D.15mm
Drainhose
Hardvinylchloride
pipeI.D.30mm
Insert
securely
Di󰀨erent
diameterjoint
70cm
ormore
Fig.2 Fig.3 Fig.4
Fig.1
Felttape(4)
Pipingtape(G)
Cuto󰀨incaseof
leftpiping.
Draincap
Draincap
Drainhose
Draincap
Drainhose
Fig.1
Fig.2
Fig.3
Fig.4
Fig.5
1)Puttherefrigerantpipingandthedrainhosetogether,
thenrmlyapplyfelttape(4)fromtheend.
 Felttape(4)overlapwidthshouldbe1/3thetapewidth.
Useabandagestopperattheendoffelttape(4).
2)Pulloutthedraincapattherearrightoftheindoor
unit.(Fig.1)
• Hold the convex section at the end and pull the
draincap.
3)Pulloutthedrain hoseattherearleft of theindoor
unit.(Fig.2)
• Holdtheclawmarkedbythearrowsandpullout
thedrainhoseforward.
4)Putthedraincapintothesectiontowhichthedrain
hoseistobeattachedattherearoftheindoorunit.
(Fig.3)
• Insertnotsharp-edgedtoolssuchasscrewdrivers
intotheholeattheendofthecapandinsertthe
capfullyintothedrainpan.
5)Insertthedrainhosefullyintothedrainpanattherear
rightoftheindoorunit.(Fig.4)
• Checkifthehoseishookedsecurelytotheprojec-
tionofitsinsertingpartatthedrainpan.
6)Insert thedrain hose into wallhole sleeve (C),
and
hooktheupperpartofindoorunitoninstallationplate
(1).Then,movetheindoorunitcompletelytotheleft
inordertomakeplacingthepipinginthebackspace
oftheuniteasier.
7)Cutoutapieceofcardboardfromtheshippingbox,roll
itup,hookitontothebackrib,anduseitasaspacer
tolifttheindoorunit.(Fig.5)
8)Connecttherefrigerantpipingwiththeextensionpipe
(B).
9)Thrustthelowerpartoftheindoorunitintotheinstal-
lationplate(1).
Left or left-rear piping
Note:
Besuretoreattachthedrainhose
andthedraincapincaseofleftor
left-rearpiping.
Otherwise, it could cause drops
of water to drip down from the
drainhose.
Donotraise
Accumulated
drain water
Air
Waving
Water
leakage
Water
leakage
Water
leakage
Tipofdrain
hosedipped
in water
Ditch
Atleast
50mm
gap
2-4. PIPE FORMING AND DRAIN PIPING
Pipe Forming
• Placethedrainhosebelowtherefrigerantpiping.
• Makesurethatthedrainhoseisnotheavedorsnaked.
• Donotpullthehosewhenapplyingthetape.
• When the drain hose passes the room, be sure to wrap
insulationmaterial(obtainableatastore)aroundit.
Rear, right, or downward piping
1)Puttherefrigerantpipingandthedrainhose
together,thenrmlyapplypipingtape(G)from
theend.
2)Insertthepipingandthedrainhoseintothe
wallholesleeve(C),andhooktheupperpart
oftheindoorunitontheinstallationplate(1).
3)Checkiftheindoorunitishookedsecurelyontheinstallationplate(1)bymoving
theunittoleftandright.
4)Thrustthelowerpartoftheindoorunitintotheinstallationplate(1).
Liquidpipe
Gaspipe
Felttape(4)
Indoor/outdoorunit
connectingwire(A)
Pipingtape(G)
Cuto󰀨incaseof
rightpiping.
Cuto󰀨incaseof
downwardpiping.
2-3. CONNECTING WIRES FOR THE INDOOR UNIT
Youcanconnectindoor/outdoorleadwirewithoutremovingthefrontpanel.
1)Openthefrontpanel.
2)RemoveVAclamp.
3)Passindoor/outdoorunitconnectingwire(A)fromthebackoftheindoorunitandprocess
theendofthewire.
4)Loosenterminalscrew,andconnectrsttheearthwire,thenindoor/outdoorunitcon-
nectingwire(A)totheterminalblock.Becarefulnottomakemis-wiring.Fixthewireto
theterminalblocksecurelysothatnopartofitscoreisappeared,andnoexternalforce
isconveyedtotheconnectingsectionoftheterminalblock.
5)Firmlytightentheterminalscrewstopreventthemfromloosening.Aftertightening,pull
thewireslightlytoconrmthattheydonotmove.
6)Secureindoor/outdoorunitconnectingwire(A)andtheearthwirewiththeVAclamp.
NeverfailtohooktheclawoftheVAclamp.AttachtheVAclampsecurely.
• Forfutureservicing,giveextralengthtotheconnectingwires.
• Makeearthwirelongerthanothersaspicture.
• 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.
 Note:Donotplacethe wires betweentheindoorunit and theinstallationplate(1).
Damagedwirecouldcauseheatgenerationorre.
Earth wire
15mm
35mm
60mm
ormore
Others
15mm
35mm
Indoorterminalblock
Indoor/outdoor
unitconnecting
wire (A)
Outdoorterminalblock
Earth wire
(green/yellow)
S1 S2 S3
S1 S2 S3
Covertheconnectionpartwithtapetopreventwaterfromleaking.
Donotblocktheinletoftheoutdoorunitwiththeexcesspartofthepipes.
*DonotholdtheApartwheninstalling/remov-
ingorcarryingthepanel,orthepanelmightbe
damaged.
Apart:lowerpartofair
outletofthepanel
JG79N606H01
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
65mmholesaw
Torquewrench
Wrench(orspanner)
4mmhexagonalwrench
FlaretoolforR32,R410A
GaugemanifoldforR32,R410A
VacuumpumpforR32,R410A
ChargehoseforR32,R410A
Pipecutterwithreamer
ENGLISH
REFRIGERANT
SPLIT-TYPE AIR CONDITIONERS
INSTALLATION MANUAL
Model names are indicated in 1-3.
Wheninstallingmultiunits,refertothe
installationmanualofthemultiunitfor
outdoorunitinstallation.
English is
original.
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Riskofre)
Thisunitusesaammablerefrigerant.
Ifrefrigerantleaksandcomesincontactwithreorheatingpart,itwillcreateharmfulgasandthereisriskofre.
ReadtheOPERATINGINSTRUCTIONScarefullybeforeoperation.
ServicepersonnelarerequiredtocarefullyreadtheOPERATINGINSTRUCTIONSandINSTALLATIONMANUALbeforeoperation.
FurtherinformationisavailableintheOPERATINGINSTRUCTIONS,INSTALLATIONMANUAL,andthelike.
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• BeforestartingtheconnectionsetupoftheWi-Fiinterface,checkthesafetyprecautionsinOPERATINGINSTRUCTIONSoftheroomairconditioner.Wi-Fi
®
is a registered
trademarkofWi-FiAlliance
®
.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
■Do not install the unit by yourself (user).
 Incompleteinstallationcouldcausere,electricshock,
injuryduetotheunitfalling,orleakageofwater.Con-
sultthedealerfromwhomyoupurchasedtheunitora
qualiedinstaller.
■Perform the installation securely referring to the
installation manual.
 Incompleteinstallationcouldcausere,electricshock,
injuryduetotheunitfalling,orleakageofwater.
■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 which can bear
the weight of the unit.
 Iftheinstallationlocationcannotbeartheweightofthe
unit,theunitcouldfallcausinginjury.
■Do not alter the unit.
 Itmaycausere,electricshock,injuryorwaterleakage.
■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 appliances to the circuit.
 Ifthecapacityofthepowercircuitisinsu󰀩cientorthere
isincompleteelectricalwork,itcouldresultinareor
anelectricshock.
■Earth the unit correctly.
 Do not connect the earth to a gas pipe, water pipe,
lightning rod, or telephone earth. Defective earthing
couldcauseelectricshock.
■Do not damage the wires by applying excessive
pressure with parts or screws.
 Damagedwirescouldcausereorelectricshock.
■Be sure to cut o󰀨 the main power in case of setting
up the indoor P.C. board or wiring works.
 Failuretodosocouldcauseelectricshock.
■Use the specied wires to connect the indoor and
outdoor units securely and attach the wires rmly to
the terminal block connecting sections so the stress
of the wires is not applied to the sections. Do not
extend the wires, or use intermediate connection.
 Incompleteconnectingandsecuringcouldcausere.
■Do not install the unit in a place where ammable
gas may leak.
 Ifgas leaksand accumulatesin thearea around the
unit,itcouldcauseanexplosion.
■Do not use intermediate connection of the power
cord or the extension cord and do not connect many
devices to one AC outlet.
 Itcouldcauseareoranelectricshockdueto
defective
contact,defectiveinsulation,exceedingthepermissible
current,etc.
■Be sure to use the parts provided or specied parts
for the installation work.
 The use of defective parts could cause an injury or
leakageof waterdue toa re, anelectric shock,the
unitfalling,etc.
■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.
 Ifthereisdust,clogging,orloosepartsonthepower
supplyplugortheoutlet,itcouldcauseelectricshockor
re.Ifloosepartsarefoundonthepowersupplyplug,
replaceit.
■Attach the electrical cover to the indoor unit and the
service panel to the outdoor unit securely.
 Iftheelectricalcoveroftheindoorunitand/ortheservice
paneloftheoutdoorunitarenotattachedsecurely,it
couldresultinareoranelectricshockduetodust,
water,etc.
■When installing, relocating, or servicing the unit,
make sure that no substance other than the speci-
ed refrigerant (R32) enters the refrigerant circuit.
 Any presence of foreign substance such as air can
causeabnormalpressureriseandmayresultinexplo-
sionorinjury.Theuseofanyrefrigerantotherthanthat
speciedforthesystemwillcausemechanicalfailure,
system malfunction, or unit breakdown. In the worst
case,thiscouldleadtoaseriousimpedimenttosecuring
productsafety.
■Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, ven-
tilate the room. Check that the refrigerant does not
leak after installation has been completed.
 If refrigerant leaks and comes in contact with re or
heatingpartofsuchafanheater,keroseneheater,or
cookingstove,itwillcreateharmfulgas.Provideventila-
tion
inaccordancewithEN378-1.
■Use appropriate tools and piping materials for instal-
lation.
 ThepressureofR32is1.6timesmorethanR22.Not
using appropriate tools or materials and incomplete
installationcouldcausethepipestoburstorinjury.
■When pumping down the refrigerant, stop the com-
pressor before disconnecting the refrigerant pipes.
 If the refrigerant pipes are disconnected while the
compressorisrunningandthestopvalveisopen,air
couldbedrawninandthepressureintherefrigeration
cyclecouldbecomeabnormallyhigh.Thiscouldcause
thepipestoburstorinjury.
■When installing the unit, securely connect the re-
frigerant pipes before starting the compressor.
 Ifthecompressorisstartedbeforetherefrigerantpipes
areconnectedandwhenthestopvalveisopen,aircould
bedrawninandthepressureintherefrigerationcycle
couldbecomeabnormallyhigh.Thiscouldcausethe
pipestoburstorinjury.
■Fasten a are nut with a torque wrench as specied
in this manual.
 Iffastenedtootight,aarenutmaybreakafteralong
periodandcauserefrigerantleakage.
■The unit shall be installed in accordance with na-
tional wiring regulations.
■When using a gas burner or other ame-producing
equipment, completely remove all of the refrigerant
from the air conditioner and ensure that the area is
well-ventilated.
 Iftherefrigerantleaksandcomesincontactinreor
heatingpart,itwillcreateharmfulgasandthereisrisk
ofre.
■Do not use means to accelerate the defrosting pro-
cess or to clean, other than those recommended by
the manufacturer.
■The appliance shall be stored in a room without
continuously operating ignition sources (for exam-
ple: open ames, an operating gas appliance or an
operating electric heater).
■Do not pierce or burn.
■Be aware that refrigerants may not contain an odour.
■Pipe-work shall be protected from physical damage.
■The installation of pipe-work shall be kept to a
minimum.
■Compliance with national gas regulations shall be
observed.
■Keep any required ventilation openings clear of
obstruction.
For Wi-Fi interface
■Do not install the indoor unit equipped with the Wi-Fi
interface nearby the automatic control devices such
as automatic doors or re alarms.
 Itcancauseaccidentsduetomalfunctions.
■Do not use the indoor unit equipped with the Wi-Fi
interface nearby the medical electrical equipment
or people who have a medical device such as a
cardiac pacemaker or an implantable cardioverter-
debrillator.
 It can cause an accident due to malfunctions of
 the
medicalequipmentordevice.
■This indoor unit equipped with the Wi-Fi interface
should be installed and operated with a minimum
distance of 20 cm between the device and the user
or bystanders.
1-2. SELECTING THE INSTALLATION LOCATION
1-3. SPECIFICATIONS
Model Powersupply*1 Wirespecications
Pipesize
(thickness*3,*4)
Maximumamountof
refrigerantcharge*7
Indoorunit Outdoorunit RatedVoltage Frequency
Breaker
capacity
Powersupply*2
Indoor/outdoor
connectingwire*2
Gas/Liquid
MSZ-HR25VF(K) MUZ-HR25VF
230V 50Hz
10A
3-core
1.0mm²
4-core
1.0mm²
ø9.52/6.35mm
(0.8mm)
660g
MSZ-HR35VF(K) MUZ-HR35VF 710g
MSZ-HR42VF(K) MUZ-HR42VF 960g
MSZ-HR50VF(K) MUZ-HR50VF 12A
3-core
1.5mm²
1060g
Pipelengthandheightdi󰀨erence
Max.pipelength 20m
Max.heightdi󰀨erence 12m
Max.numberofbends*5,*6 10
RefrigerantadjustmentA*7 20g/m
Insulationthickness*8,*9 8mm
INDOOR UNIT
*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o󰀨,itmustinterruptallphases.)
*2Usewiresinconformitywithdesign60245IEC57.
*3Neverusepipeswiththicknesslessthanspecied.Thepressureresistancewillbeinsu󰀩cient.
*4Useacopperpipeoracopper-alloyseamlesspipe.
*5Becarefulnottocrushorbendthepipeduringpipebending.
*6Refrigerantpipebendingradiusmustbe100mmormore.
*7Ifpipelengthexceeds7m,additionalrefrigerant(R32)chargeisrequired.(Noadditionalchargeisrequiredforpipelength
lessthan7m.)
 Additionalrefrigerant
=A×(pipelength(m)–7)
*8Insulationmaterial:Heatresistingfoamplastic0.045specicgravity
*9Besuretousetheinsulationofspeciedthickness.Excessivethicknessmaycauseincorrectinstallationoftheindoorunit
andinsu󰀩cientthicknessmaycausedewdrippage.
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
■Install an earth leakage breaker depending on the
installation place.
 Ifanearthleakagebreakerisnotinstalled,itcouldcause
electricshock.
■Perform the drainage/piping work securely ac-
cording to the installation manual.
 Ifthereisdefectinthedrainage/pipingwork,watercould
dropfromtheunit,soakinganddamaginghousehold
goods.
■Do not touch the air inlet or the aluminum ns of
the outdoor unit.
 Thiscouldcauseinjury.
■Please wear protective equipment when you
touch the base of the outdoor unit.
 Itcouldcauseinjuryifyoudonotweartheprotective
equipment.
■Do not install the outdoor unit where small ani-
mals may live.
 Ifsmallanimalsenterandtouchtheelectricpartsinside
theunit,itcouldcauseamalfunction,smokeemission,
orre.Also,adviseusertokeeptheareaaroundthe
unitclean.
■Do not operate the air conditioner during interior
construction and nishing work, or while waxing
the oor.
 Beforeoperatingtheairconditioner,ventilatetheroom
well after such work is performed. Otherwise, it may
causevolatileelementstoadhereinsidetheaircondi-
tioner,resultinginwaterleakageorscatteringofdew.
For Wi-Fi interface
■To prevent damage from static electricity, touch
a nearby metal body to discharge static electric-
ity from yourself before touching the indoor unit
equipped with the Wi-Fi interface.
 Staticelectricityfromthehumanbodymaydamagethe
Wi-Fiinterfaceunit.
■Do not use the indoor unit equipped with the
Wi-Fi interface nearby other wireless devices,
microwaves, cordless phones, or facsimiles.
 Itcancausemalfunctions.
• Whereairowisnotblocked.
• Wherecool(orwarm)airspreadsovertheentireroom.
• Rigidwallwithoutvibration.
• Whereitisnotexposedtodirectsunshine.Donotexposetodirectsunshinealso
duringtheperiodfollowingunpackingtobeforeuse.
• Whereeasilydrained.
• Atadistance
1mormoreawayfromyourTVandradio.Operationoftheaircondi-
tionermayinterferewithradioorTVreception.Anampliermayberequiredforthe
a󰀨ected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.
For Wi-Fi interface
• Pleaseensure that theRouter supports the WPA2-AES encryption setting before
commencementoftheinstallationofthisindoorunitequippedwiththeWi-Fiinterface.
• TheEndusershouldreadandacceptthetermsandconditionsoftheWi-Fiservice
beforecommencementoftheinstallationofthisindoorunitequippedwiththeWi-Fi
interface.
• ThisindoorunitequippedwiththeWi-Fiinterfaceshouldnotbeinstalledandcon-
nectedtoanyMitsubishiElectricsystemwhichistoprovideapplicationcriticalcooling
orheating.
REMOTE CONTROLLER
• Whereitiseasytooperateandeasilyvisible.
• Wherechildrencannottouchit.
• Selectapositionabout1.2mabovetheoorandcheckthatsignalsfrom
theremote
controlleraresurelyreceivedbytheindoorunitfromthatposition(‘beep’or‘beep
beep’receivingtonesounds).Whentheremotecontrollerholderissupplied,install
itatapositionfromwhichtheindoorunitcanreceivesignals.
OUTDOOR UNIT
• Whereitisnotexposedtostrongwind.Iftheoutdoorunitisexposedtoawindduring
defrosting,thedefrostingtimewillbelonger.
• 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(orcool)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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a󰀨ecteddevice.
• Installtheunithorizontally.
• Pleaseinstallitinanareanota󰀨ectedbysnowfallorblowingsnow.Inareaswith
heavysnow,pleaseinstallacanopy,
apedestaland/orsomeba󰀪eboards.
Note:
Itisadvisabletomakeapipingloopnearoutdoorunitsoastoreducevibration
transmittedfromthere.
Note:
Whenoperatingtheairconditionerinlowoutsidetemperature,besuretofollowthe
instructionsdescribedbelow.
• Neverinstalltheoutdoorunitinaplacewhereitsairinlet/outletsidemaybeexposed
directlytowind.
•
Topreventexposuretowind,installtheoutdoorunitwithitsairinletsidefacingthewall.
• Topreventexposuretowind,itisrecommendedtoinstallaba󰀪eboardontheair
outletsideoftheoutdoorunit.
Avoidthefollowingplacesforinstallationwhereairconditionertroubleisliabletooccur.
• Whereammablegascouldleak.
• Wherethereismuchmachineoil.
•
Whereoilissplashedorwheretheareaislledwithoilysmoke(suchascookingareas
andfactories,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equipment.
• WherethereisemissionofhighlevelsofVOCs,includingphthalatecompounds,
formaldehyde,etc.,whichmaycausechemicalcracking.
• Theapplianceshallbestoredsoastopreventmechanicaldamagefromoccurring.
WARNING
The unit should be installed in rooms which have the oor space specied
below.
HR25: 1.7 m² or larger HR35: 2.0 m² or larger
HR42: 2.5 m² or larger HR50: 2.7 m² or larger
As for the details, please refer to the Installation Service Manual for New
Refrigerant System.
When the indoor unit is connected to the multi type outdoor unit of R32
refrigerant, please consult your dealer about the oor space specied.
Note:
Inroomswhereinvertertypeuorescentlampsareused,thesignalfromthewireless
remotecontrollermaynotbereceived.
Airinlet
Airoutlet
Outdoor unit installation (HR25, 35)
40mm
2-10.3mm×19.3mmslot
699mm
500mm
285mm
249mm
249-267mm
121mm
Airinlet
Airinlet
Airoutlet
Outdoor unit installation (HR42, 50)
40mm
2-10.3mm×21mmslot
800mm
500mm
344.5mm
285mm
304-325mm
150mm
Airinlet
Fixingscrew
VAclamp
Indoor/outdoorunit
connectingwire(A)
Terminalblock
Cordclamp
Power supply cord (K)
Indoor/outdoorunit
connectingwire(A)
Thisindoorunitisequippedwiththebuilt-inWi-Fiinterface.(VFKtypeonly)
Claw
Appearanceoftheoutdoorunitmaydi󰀨erfromsomemodels.
clear *3
*2Whenfrontandsidesofunitareclear,100mmormore
*3Whenany2sidesofleft,rightandrearofunitareclear,
HR25,35:100mmormore
HR42,50:200mmormore
*4Themanufacturingyearandmonthisindicatedonthespecnameplate.
JG79N606H01_01En.indd 1JG79N606H01_01En.indd 1 2023/04/07 11:52:562023/04/07 11:52:56

Mitsubishi Electric MSZ-HR42VF Specifications

General

Brand	Mitsubishi Electric
Model	MSZ-HR42VF
Category	Air Conditioner
Language	English