PN 240009908, Rev C [01/13/2014]
MZI Series
Multi-Zone ~16SEER High-Wall
Ductless Inverter Split Systems
Installation, Operation &
Manintenance Manual
Air Handler (Indoor) Models: MWHA/MWHB
Condenser (Outdoor) Models: MHA/MHB
An ISO 9001-2008 Certied Company
ECR International, Inc.
2201 Dwyer Avenue • Utica, New York 13501
Phone: 800.325.5279 • Web: enviromaster.com
Presents
1
REFRIGERANT PIPE C ONNECTION
Refrigerant pipe connection ....................... ...................................................................................
ELECTRICAL WORK
Electrical work ............. ..... .................. .................................. .......................................................
TEST RUNNING
Test runnin g ..................................................................... ................................. ............................
AIR PURGING
Air p urging with vacuum pump ........... ........... ......................................... ............ ..........................14
Safety and leakage check ............. ...............................................................................................
SOCIABLE REMARK
Sociable remark.......................................... .......................... ........... ................ ........................... ...
SAFETY PRECAUTIONS
Warning .......... ....................................................................... .......................................................
Caution ........ ........ ....................................... ............................... ........... ................................... .....
OPERATING INSTRUCTIONS
Identification of parts.......................................................................................................................
Operating temperature.................................... ........... .............. .......................................................
Manual operation. .............................. .......................................... ............................. ......................
19
20
21
22
22
24
25
26
28
30
32
17
16
13
10
9
2
SAFETYPRECAUTIONS
WARNING
ReadthefollowSAFETYPRECAUTIONScarefullybeforeinstallation.
Electricalworkmustbeinstalledbyalicensedelectrician.Besuretousethecorrectrating
ofthepowerplugandmaincircuitforthemodeltobeinstalled.
Incorrectinstallationduetoignoringoftheinstructionwillcauseharmordamage.
Theseriousnessisclassifiedbythefollowingindications.
Thissymbolindicatesthepossibilityofdeathorseriousinjury.
Theitemstobefollowedareclassifiedbythesymbols:
SymbolwithbackgroundwhitedenotesitemthatisPROHIBITEDfromdoing.
CAUTION
Thissymbolindicatesthepossibilityofinjuryordamagetoproperty.
WARNING
1)Engagedealerorspecialistforinstallation.Ifinstallationdonebytheuserisdefective,itwillcausewater
leakage,electricalshockfire.
2)Installaccordingtothisinstallationinstructionsstrictly.Ifinstallationisdefective,itwillcausewater
leakage,electricalshockfire.
3)Usetheattachedaccessoriespartsandspecifiedpartsforinstallation.otherwise,itwillcausethesettofall,
waterleakage,electricalshockfire.
4)Installatastrongandfirmlocationwhichisabletowithstandthesetsweight.Ifthestrengthisnotenough
orinstallationisnotproperlydone,thesetwilldropandcauseinjury.
,
5)Forelectricalwork,followthelocalnationalwiringstandard,regulationandthisinstallationinstructions.An
independentcircuitandsingleoutletmustbeused.Ifelectricalcircuitcapacityisnotenoughordefectfound
inelectricalwork,itwillcauseelectricalshockfire.
6)Usethespecifiedcableandconnecttightlyandclampthecablesothatnoexternalforcewillbeactedon
theterminal.Ifconnectionorfixingisnotperfect,itwillcauseheat-uporfireattheconnection.
7)Wiringroutingmustbeproperlyarrangedsothatcontrolboardcoverisfixedproperly.Ifcontrolboardcover
isnotfixedperfectly,itwillcauseheat-upatconnectionpointofterminal,fireorelectricalshock.
8)Whencarryingoutpipingconnection,takecarenottoletairsubstancesotherthanthespecified
refrigerantgointorefrigerationcycle.Otherwise,itwillcauselowercapacity,abnormalhighpressure
intherefrigerationcycle,explosionandinjury.
9)Donotmodifythelengthofthepowersupplycordoruseofextensioncord,anddonotsharethe
singleoutletwithotherelectricalappliances.Otherwise,itwillcausefireorelectricalshock.
CAUTION
1)Thisequipmentmustbeearthedandinstalledwithearthleakagecurrentbreaker.Itmaycauseelectrical
shockifgroundingisnotperfect.
2)Donotinstalltheunitatplacewhereleakageofflammablegasmayoccur.Incasegasleaksand
accumulatesatsurroundingoftheunit,itmaycausefire.
3)Carryoutdrainagepipingasmentionedininstallationinstructions.Ifdrainageisnotperfect,water
mayentertheroomanddamagethefurniture.
3
Selectinginstallationplace
Readcompletely,thenfollowstepbystep.
Indoorunit
Donotexposetheindoorunittoheatorsteam.
Selectaplacewheretherearenoobstacles
infrontoraroundtheunit.
Makesurethatcondensationdrainagecan
beconvenientlyroutedaway.
Donotinstallnearadoorway.
Ensurethatthespaceontheleftandright
oftheunitismorethan12cm.
Useastudfindertolocatestudstopreventunnecessarydamagetothewall.
Theindoorunitshouldbeinstalledonthewallataheightof2.0metresormorefromthefloor.
Theindoorunitshouldbeinstalledallowingaminimumclearanceof15cmfromtheceiling.
Anyvariationsinpipelengthwill/mayrequireadjustmenttorefrigerantcharge.
Thereshouldnotbeanydirectsunlight.Otherwise,thesunwillfadetheplasticcabinetand
affectitsappearance.Ifunavoidable,sunlightpreventionshouldbetakenintoconsideration.
Outdoorunit
Ifanawningisbuiltovertheoutdoorunitto
preventdirectsunlightorrainexposure,
makesurethatheatradiationfromthe
condenserisnotrestricted.
Ensurethattheclearancearoundtheback
oftheunitismorethan30cm
.Thefrontoftheunitshould
havemorethan200cmofclearanceandthe
connectionside(rightside)shouldhavemore
than60cmofclearance.
Donotplaceanimalsandplantsinthepathoftheairinletoroutlet.
Taketheairconditionerweightintoaccountandselectaplacewherenoiseandvibration
willnotbeanissue.
Selectaplacesothatthewarmairandnoisefromtheairconditionerdonotdisturbneighbors.
Iftheoutdoorunitisinstalledonaroofstructure,besuretoleveltheunit.
Ensuretheroofstructureandanchoringmethodareadequatefortheunitlocation.
Consultlocalcodesregardingrooftopmounting.
Iftheoutdoorunitisinstalledonroofstructuresorexternalwalls,thismayresultin
excessivenoiseandvibration,andmayalsobeclassedasanonserviceableinstallation.
andleftsideis
morethan30cm
Rooftopinstallation:
INSTALLATIONINSTRUCTIONS
Fig.2
Fig.1
1.Wall-mountedtype
4
Accessories
INSTALLATIONINSTRUCTIONS
Note: Excepttheabovepartsprovided,theotherpartsneededduringinstallationyoumust
purchase.
Levelgauge
Screwdriver
Electricdrill,Holecoredrill(65φ mm)
Flaringtoolset
Specifiedtorquewrenches:1.8kgf.m,4.2kgf.m,
5.5kgf.m,6.6kgf.m(differentdependingonmodelNo.)
Spanner(halfunion)
Hexagonalwrench(4mm)
Gas-leakdetector
Toolsneededforinstallation:
Vacuumpump
Gaugemanifold
Usersmanual
Thermometer
Multimeter
Pipecutter
Measuringtape
Partsyoumustpurchase
Consultthetechnician
forthepropersize.
6.35
9.53
12.7
6
2
Self-tappingScrewBST2.9X10
Remotecontroller
InstallationPlate
NameofAccessories
Self-tappingScrewAST3.9X25
Seal(forcooling&heatingmodelsonly)
DrainJoint
Magneticring
(Hitchitontheconnectivecablebetweenindoor
unitandoutdoorunitafterinstallation.)
Transferconnector
()
(Pipesizedifferfromappliancetoappliance.
Tomeetdifferentpipesizerequirement,sometimes
thepipeconnectionsneedthetransferconnector
toinstallontheoutdoorunit.)
NOTE:
Packedwiththeindoorunit
Connecting
pipe
Assembly
Liquidside
PlasticExpansionSheath
Number
Qty/oneunit’
Gasside
7
Remotecontrollerholder
1
(forcooling&heatingmodelsonly)
1
5-8
(dependingonmodels)
5-8
(dependingonmodels)
1
1
Optionalpart
(onepiece/onecable)
1
(onsomemodels)
1
5
4
9
11
10
8
3
2
1
Optional
parts
Thisillustrationisforexplanationpurposesonly.
Theactualshapeofyouraircondtionermaybe
slightlydifferent.
Copperlinesmustbeinsulatedindependently
Useastudfindertolocatestudstoprevent
unnecessarydamagetothewall.
Aminimumpiperunof3metresisrequired
tominimisevibration&excessivenoise.
TwooftheA,BandCdirectionsshouldbe
freefromobstructions.
CAUTION
INSTALLATIONINSTRUCTIONS
5
CAUTIONS
One-Two
One-Three
One-Four
One-Five
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Morethan15cm
Remote
controller
A
B
C
Airout
Loopa
connective
cable
1
2
3
4
5
6
Fig.3
6
INSTALLATIONINSTRUCTIONS
Fig.4
Correctorientation
ofInstallationPlate
Wall
Indoor
Outdoor
Fig.6
Fig.5
Indoorunitinstallation(wall-mountedtype)
2.Drillaholeinthewall
Note:
1.FittheInstallationPlate
1.Fittheinstallationplatehorizontally
onstructuralpartsofthewallwith
spacesaroundtheinstallationplate.
2.Ifthewallismadeofbrick,concrete
orthelike,drillfiveoreight5mmdiameter
holesinthewall.InsertClipanchorfor
appropriatemountingscrews.
3.Fittheinstallationplateonthewall
withfiveoreighttype “A” screws.
FittheInstallationPlateanddrill
holesinthewallaccordingtothe
wallstructureandcorresponding
mountingpointsontheinstallation
plate.TheInstallationPlatemaybe
slightlydifferentaccordingtothe
differentmodelsofindoorunit.
(Dimensionsarein “mm” unless
otherwisestated)
1.Determineholepositionsaccording
tothediagramdetailedinFig.5.Drill
one(1)hole(65mm)slantingslightly
tooutdoorside.
2.Alwaysusewallholeconduitwhen
drillingmetalgrid,metalplateorthelike.
φ
3.ConnectivePipeandDrainage
Installation
1.Runthedrainhoseslopingdownward.
Donotinstallthedrainhoseas
illustratedinFig.7.
Drainage
Fig.7
Donotblockwaterflowbyarise.
Donotputtheendof
drainhoseintowater.
150mmormoretoceiling
Indoorunitoutline
Installationplate
Rightrearside
refrigerant
pipehole65
φ
Leftrearside
refrigerant
pipehole65
φ
120mmor
moretowall
120mmor
moretowall
918
190
150
A
Rightrearside
refrigerant
pipehole65
φ
Installationplate
Indoorunitoutline
Leftrearside
refrigerant
pipehole65
φ
150mmormoretoceiling
120mmor
moretowall
120mmor
moretowall
ModelA(A:710,B:250,C:100,D:110)
ModelA(A:710,B:250,C:100,D:110)
ModelA(A:920,B:293,C:150,D:185)
ModelB()A:790,B:265,C:100,D:150
ModelB()A:790,B:275,C:100,D:85
ModelC()A:850,B:290,C:100,D:115
ModelB()A:995,B:293,C:150,D:200
ModelC()A:850,B:305,C:150,D:145
C
D
7
INSTALLATIONINSTRUCTIONS
1.Fortheleft-handandright-handpiping,
removethepipecoverfromtheside
panel.
2.Fortherear-right-handandrear-left-hand
piping,installthepipingasshowninFig.10.
3.Fixtheendoftheconnectivepipe.(Refer
toTighteningConnectioninREFRIGERANT
PIPINGCONNECTION)
Connectivepipeinstallation
2.Whenconnectingextensiondrainhose,
insulatetheconnectingpartofextension
drainhosewithashieldpipe,donotlet
thedrainhoseslack.
Right-handpiping
Left-handpiping
Rear-rightpiping
Rear-leftpiping
Fig.8
Fig.9
Fig.10
4.Pipingandwrapping
Bundlethetubing,connectingcable,anddrain
hosewithtapesecurely,evenlyasshownin
Fig.11.
Becausethecondensedwaterfromrearofthe
indoorunitisgatheredinpondingboxandis
pipedoutofroom.Donotputanythingelsein
thebox.
Indoorunit
Connective
pipe
Piperoom
Pondingbox
Wrappingbelt
Connective
cable
Drainhose
Fig.11
Connecttheindoorunitfirst,thenthe
outdoorunit.
Donotallowthepipingtoletoutfrom
thebackoftheindoorunit.
Becarefulnottoletthedrainhoseslack.
Heatinsulatedbothoftheauxiliarypiping.
Besurethatthedrainhoseislocatedat
thelowestsideofthebundle.Locating
attheuppersidecancausedrainpan
tooverflowinsidetheunit.
Neverintercrossnorintertwistthepower
wirewithanyotherwiring.
Runthedrainhoseslopeddownwardto
drainoutthecondensedwatersmoothly.
CAUTION
8
INSTALLATIONINSTRUCTIONS
Fig.12
1.Passthepipingthroughtheholeinthe
wall.
2.Puttheupperclawatthebackofthe
indoorunitontheupperhookofthe
installationplate,movetheindoorunit
fromsidetosidetoseethatitissecurely
hooked(seeFig.12).
3.Pipingcaneasilybemadebyliftingthe
indoorunitwithacushioningmaterial
betweentheindoorunitandthewall.
Getitoutafterfinishpiping.
4.Pushthelowerpartoftheindoorunitup
onthewall,thenmovetheindoorunit
fromsidetoside,upanddowntocheck
ifitishookedsecurely.
4.Indoorunitinstallation
(R410A)
Max.50m
(R407c/R22)
Max.10m
Max.5m
(R410A)
(R407c/R22)
10.5KW
7
Settlementofoutdoorunit
Anchortheoutdoorunitwith
aboltandnut10or8tightly
andhorizontallyonaconcrete
orrigidmount.
φφ
Fig.45
Installtheoutdoorunitonarigidbaseto
preventincreasingnoiselevelandvibration.
Determinetheairoutletdirectionwherethe
dischargedairisnotblocked.Inthecasethat
theinstallationplaceisexposedtostrongwind
suchasaseaside,makesurethefanoperating
properlybyputtingtheunitlengthwisealongthe
wallorusingadustorshieldplates.
Speciallyinwindyarea,installtheunittoprev-
enttheadmissionofwind.Ifneedsuspending
installation,theinstallationbracketshould
accordwithtechniquerequirementinthe
installationbracketdiagram.
Theinstallationwallshouldbesolidbrick,
concreteorthesameintensityconstruction,or
actionstoreinforce,dampingsupportingshould
betaken.Theconnectionbetweenbracketand
wall,bracketandtheairconditionershouldbe
firm,stableandreliable.
Besurethereisnoobstaclewhichblock
radiatingair.
Strong
wind
Fig.44
Outdoorunitinstallation
Outdoorinstallationprecaution
INSTALLATIONINSTRUCTIONS
530
560
290
335
624
366
590
333
760x590x285
845x700x320
900x860x315
990x965x345
L2(mm)
W2(mm)
Mountingdimensions
9
Fitthesealintothedrainjoint,theninsertthe
drainjointintothebasepanholeofoutdoorunit,
rotate90tosecurelyassemblethem.
Connectingthedrainjointwithanextensiondrain
hose(Locallypurchased),incaseofthewater
drainingofftheoutdoorunitduringtheheating
mode.
。
Drainjointinstallation
Seal
Drainjoint
Basepanholeof
outdoorunit
Seal
Drainpipe
Refrigerantpipeconnection
Oblique
90
。
Roughness Burr
Maincauseforrefrigerantleakage
isduetodefectintheflaringwork.
Carryoutcorrectflaringwork
usingthefollowingprocedure:
1.Usethepipingkitaccessoryorpipes
purchasedlocally.
2.Measurethedistancebetweentheindoor
andtheoutdoorunit.
3.Cutthepipesalittlelongerthanthe
measureddistance.
4.Cutthecable1.5mlongerthanthepipe
length.
A:Cutthepipesandthecable.
1.Flaringwork
Fig.46
B:Burrremoval
1.Completelyremoveallburrsfromthecut
crosssectionofpipe/tube.
2.Puttheendofthecoppertube/pipeina
downwarddirectionasyouremoveburrsin
ordertoavoiddroppingburrsintothetubing.
Pipe
Reamer
Pointdown
Fig.47
Fig.48
C:Puttingnuton
Removeflarenutsattachedtoindoorand
outdoorunit,thenputthemonpipe/tube
havingcompletedburrremoval.(notpossible
toputthemonafterflaringwork)
Flarenut
Coppertube
Fig.49
REFRIGERANTPIPECONNECTION
(1)
(2)
NOTE:Thedrainjointdifferfromappliance
toappliance.
10
ELECTRICALWORK
Bar
Copperpipe
Clamphandle
Redarrowmark
Cone
Yoke
Handle
Bar
Fig.50
D:Flaringwork
Firmlyholdcopperpipeinadieinthe
dimensionshowninthetablebelow.
Caution
Alignthecenterofthepipes.
Sufficientlytightentheflare
nutwithfingers,andthentighten
itwithaspannerandtorquewrench
asshowninFig.51&52.
TighteningConnection
Excessivetorquecanbreaknut
dependingoninstallationconditions.
Outerdiam.
(mm)
A(mm)
Max.
Min.
6.35 1.3 0.7
9.53
1.6 1.0
12.7
1.8
1.0
Fig.52
Indoorunittubing Flarenut Pipings
Fig.51
ElectricsafetyregulationsfortheinitialInstallation
1.Ifthereisserioussafetyproblemaboutthepowersupply,thetechniciansshouldrefuse
toinstalltheairconditionerandexplaintotheclientuntiltheproblemissolved.
2.Powervoltageshouldbeintherangeof90%~110%ofratedvoltage.
3.Thecreepageprotectorandmainpowerswitchwitha1.5timescapacityofMax.Current
oftheunitshouldbeinstalledinpowercircuit.
4.Ensuretheairconditionerisgroundedwell.
7.Anindividualbranchcircuitandsinglereceptacleusedonlyforthisairconditionermustbeavailable.
5.AccordingtotheattachedElectricalConnectionDiagramlocatedonthepaneloftheoutdoor
unittoconnectthewire.
6.Allwiringmustcomplywithlocalandnationalelectricalcodesandbeinstalled
byqualifiedandskilledelectricians.
12.7
1.8
1.0
Electricalwork
Outer
diam.
Tightening
torque(N.cm)
Additionaltightening
torque(N.cm)
6.35
12.7
9.52
1500
(153kgf.cm)
1600
(163kgf.cm)
3500
(357kgf.cm)
3600
(367kgf.cm)
2500
(255kgf.cm)
2600
(265kgf.cm)
11
ELECTRICALWORK
Fig.53
Connectthecabletotheoutdoorunit
1.Removetheelectricalcontrolboardcover
fromtheoutdoorunitbylooseningthescrew
asshowninFig.53.
2.Connecttheconnectivecablestothe
terminalsasidentifiedwiththeirrespective
matchednumbersontheterminalblockof
indoorandoutdoorunits.
3.Securethecableontothecontrolboardwith
thecordclamp.
4.Topreventtheingressofwater,fromaloop
oftheconnectivecableasillustratedinthe
installationdiagramofindoorandoutdoor
units.
5.Insulateunusedcords(conductors)with
PVC-tape.Processthemsotheydonot
touchanyelectricalormetalparts.
Wiringconnection
NOTE:Beforeperforminganyelectrical
work,turnoffthemainpowertothesystem.
ConnectionCable
10mm
40mm
CAUTIONS
Donottouchthecapacitorevenifyou
havedisconnectedthepowerforthereis
stillhighvoltagepoweronit,orelectric
shockhazardmayoccur.Foryoursafety,
youshouldstartrepairingatleast5minutes
laterafterthepowerisdisconnected.
ThepowerissuppliedfromtheOutdoor
Unit.TheIndoorUnitsareconnected
withsignalwiresorpowercordsare
connectedreliablyandcorrectly,orthe
airconditionercouldnotrunnormally.
Fig.54
CAUTIONS
Makesuretoconnecttheindoorunit(A,B,C,D,
E)totheHiandLovalveandterminalsofsignal
wires(A,B,C,D,E)ofoutdoorunitasidentified
withtheirrespectivematchedconnection.
Wrongwiringconnectionsmaycausesome
electricalpartstomalfunction.
Minimumnorminalcross-sectionalarea
ofconductors:
Ratedcurrentofappliance
(A)
Nominalcross-sectional
area(mm)
2
>3and<6
>6and<10
>10and<16
>16and<25
0.75
1
1.5
2.5
Screw
Cover
Connectivecable
ofindoorunitand
outdoorunit
Connectivecable
ofindoorunitand
outdoorunit
Connectivecable
ofindoorunitand
outdoorunit
Connectivecable
ofindoorunitand
outdoorunit
Connectivecable
ofindoorunitand
outdoorunit
One-two One-three One-four
One-five
POWER
E
E
12
POWER
L
N
TOA
TOB
L(A)
L(B)
N(A) N(B)
S(A)
S(B)
One-twomodels:
One-threemodels:
One-fourmodels:
One-fivemodels:
Fig.55
L
N
S(A)
L(A)
N(A)
TOA
TOA
L
N
L(A)
N(A)
S(A)
NOTE:pleaserefertothefollowingfigures,iftheclientwantwirebythemselves.
ELECTRICALWORK
L2
S
L2
L1
L1
SUPPLY
S
TOA
L2
L1
L1
L2
SUPPLY
Y/G
Y/G
Y/G
TOA
TOA
TOB
L1
L2
SUPPLY
SUPPLY
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G
TOB
TOC
TOC
TOD
TOD
TOE
L1
L2
ModelA
ModelA
ModelA
ModelA
ModelB
Magneticring(notsupplied,
optionalpart)
ModelB
ModelB
ModelB
LN
TOB
TOA
L(B)
N(B)
S(B)
L(A)
N(A)
S(A)
(Usedtohitchtotheconnective
cableofindoorandoutdoor
unitsafterinstallation.)
13
Aftertheconfirmationoftheaboveconditions,preparethewiringasfollows:
1)Neverfailtohaveanindividualpowercircuitspecificallyfortheairconditioner.Asfor
themethodofwiring,beguidedbythecircuitdiagrampostedontheinsideofcontrol
cover.
2)Thescrewwhichfastenthewiringinthecasingofelectricalfittingsareliabletocome
loosefromvibrationstowhichtheunitissubjectedduringthecourseof
transportation.Checkthemandmakesurethattheyarealltightlyfastened.(Ifthey
areloose,itcouldcauseburn-outofthewires.)
3)Specificationofpowersource.
4)Confirmthatelectricalcapacityissufficient.
5)Seetothatthestartingvoltageismaintainedatmorethan90percentoftherated
voltagemarkedonthenameplate.
6)Confirmthatthecablethicknessisasspecifiedinthepowersourcespecification.
7)Alwaysinstallanearthleakagecircuitbreakerinawetormoistarea.
8)Thefollowingwouldbecausedbyvoltagedrop.
Vibrationofamagneticswitch,whichwilldamagethecontactpoint,fusebreaking,disturbanceofthe
normalfunctionoftheoverload.
9)Themeansfordisconnectionfromapowersupplyshallbeincorporatedinthefixed
wiringandhaveanairgapcontactseparationofatleast3mmineachactive(phase)
conductors.
Airandmoistureintherefrigerantsystemhaveundesirableeffectsasindicatedbelow:
Pressureinthesystemrises.
Operatingcurrentrises.
Coolingorheatingefficiencydrops.
Moistureintherefrigerantcircuitmayfreezeandblockcapillarytubing.
Watermayleadtocorrosionofpartsintherefrigerationsystem.
Therefore,theindoorunitandtubingbetweentheindoorandoutdoorunitmustbeleaktested
andevacuatedtoremoveanynoncondensablesandmoisturefromthesystem.
●
●
●
●
●
Airpurgingwithvacuumpump
●
Preparation
Checkthateachtube(bothliquidandgassidetubes)betweentheindoorandoutdoorunits
havebeenproperlyconnectedandallwiringforthetestrunhasbeencompleted.Remove
theservicevalvecapsfromboththegasandtheliquidsideontheoutdoorunit.Notethat
boththeliquidandthegassideservicevalvesontheoutdoorunitarekeptclosedatthis
stage.
●
Pipelengthandrefrigerantamount:
Connective
pipelength
Lessthan5m
Morethan5m
Airpurging
method
Usevacuum
pump.
Usevacuum
pump.
Additionalamountofrefrigeranttobecharged
AIRPURGING
Airpurging
R22:(Pipelength-5m)x30g/m
R410A:(Pipelength-5m)x15g/m
R407c:(Pipelength-5m)x30g/m
14
AIRPURGING
Whenrelocatetheunittoanotherplace,
performevacuationusingvacuumpump.
Makesuretherefrigerantaddedintotheair
conditionerisliquidforminanycase.
(NotapplicabletotheunitsadoptfreonR22)
Openthevalvestemuntilithitsagainstthe
stopper.Donottrytoopenitfurther.
Securelytightenthevalvestemcapwitha
spannerorthelike.
Valvestemcaptighteningtorque(See
Tighteningtorquetableinpreviouspage).
Outdoor
unit
Indoor
unit
Refrigerant
Flarenut
Stopper
Cap
Valvebody
Packedvalve Halfunion
Gasside
Liquidside
A
C
D
B
Valvestem
Fig.56
Fig.57
WhenUsingtheVacuumPump
(Formethodofusingamanifoldvalve,refer
toitsoperationmanual.)
1.Completelytightentheflarenuts,A,B,C,D,
valvechargehosetoa
chargeportofthelow-pressurevalveonthe
gaspipeside.
2.Connectthechargehoseconnectiontothe
vacuumpump.
3.FullyopenthehandleLoofthemanifoldvalve.
4.Operatethevacuumpumptoevacuate.After
slightlyloosetheflarenut
oftheLovalveonthegaspipeside
checkthattheairisentering(Operationnoise
pumpchangesanda
commeterindicates0insteadofminus)
5.Aftertheevacuationiscomplete,fullyclose
manifoldvalveandstop
theoperationofthevacuumpump.Make
evacuationfor15minutesormore
compoundmeterindicates
-76cmHg(-1x10Pa).
6.TurnthestemofthepackedvalveBabout
45counterclockwisefor6~7secondsafter
thegascomingout,thentightentheflarenut
again.Makesurethepressuredisplayinthe
pressureindicatorisalittlehigherthanthe
atmospherepressure.
7.RemovethechargehosefromtheLow
pressurechargehose.
8.FullyopenthepackedvalvestemsBandA.
9.Securelytightenthecapofthepackedvalve.
connectthemanifold
startingevacuation,
and
ofthevacuum
pound
thehandleLoofthe
andcheck
thatthe
5
o
Manifoldvalve
Compoundmeter
-76cmHg
HandleLo
HandleHi
Chargehose
Chargehose
Vacuumpump
Pressuregauge
Lowpressurevalve
Fig.58
Cautioninhandlingthepackedvalve
15
Performtheelectricsafecheckafter
completinginstallation:
1.Insulatedresistance
Theinsulatedresistancemustbemorethan
2M.
2.Groundingwork
Afterfinishinggroundingwork,measurethe
groundingresistancebyvisualdetectionand
groundingresistancetester.Makesurethe
groundingresistanceislessthan4.
3.Electricalleakagecheck(performingduring
testrunning)
Duringtestoperationafterfinishinginstallation,
theservicemancanusetheelectroprobeand
multimetertoperformtheelectricalleakage
check.Turnofftheunitimmediatelyifleakage
happens.Checkandfindoutthesolution
waystilltheunitoperateproperly.
Ω
Ω
A:LopackedvalveB:Hipackedvalve
CandDareendsofindoorunitconnection.
CAUTION
Electricalsafetycheck●
Gasleakcheck●
1.
Applyasoapwateroraliquidneutral
detergentontheindoorunitconnection
oroutdoorunitconnectionsbyasoft
brushtocheckforleakageofthe
connectingpointsofthpiping.Ifbubbles
comeout,thepipeshaveleakage.
2.
Soapwatermethod:
Leakdetector
Usetheleakdetectortocheckforleakage.
Safetyandleakagecheck
15
Indoorunit
checkpoint
Outdoorunit
checkpoint
n
m
k
j
i
h
A
B
C
a
c
b
d
e
f
a,b,c,d,h,i,j,karepointsforone-twotype.
a,b,c,d,e,f,,h,i,j,k,m,narepointsforone-threetype.
A,B,C,Darepointsforone-fourtype.
A,B,C,D,Earepointsforone-fivetype.
Indoorunit
checkpoint
Outdoorunit
checkpoint
AIRPURGING
Fig.59
Fig.60
NOTE: Theillustrationisforexplanation
purposeonly.TheactualorderofA,B,C
DandEonthemachinemaybeslightly
differentfromtheunityoupurchased.The
actualshapeshallprevail.
E
16
Testrunning
Performtestoperationaftercompletinggasleakcheckattheflarenutconnectionsand
electricalsafetycheck.
Checkthatalltubingandwiringhavebeenproperlyconnected.
Checkthatthegasandliquidsideservicevalvesarefullyopen.
1.Connectthepower,presstheON/OFFbuttonontheremotecontrollertoturntheuniton.
2.UsetheMODEbuttontoselectCOOL,HEAT,AUTOandFANtocheckifallthefunctions
workswell.
3.Whentheamienttemperatureistoolow(lowerthan17C),theunitcannotbecontrolledby
theremotecontrollertorunatcoolingmode,manualoperationcanbetaken.Manual
operationisusedonlywhentheremotecontrollerisdisableormaintenancenecessary.
PresstheManualcontrolbuttontoselecttheAUTOorCOOL,theunitwilloperateunder
ForcedAUTOorCOOLmode(seeUserManualfordetails).
4.Thetestoperationshouldlastabout30minutes.
Holdthepanelsidesandliftthepaneluptoanangleuntilitremainsfixedwithaclicking
sound.
Manualcontrol
Button
TESTRUNNING
Fig.61
Manualcontrol
button
AUTO/COOL
17
Beforeusingyourairconditioner,pleaseread
thismanualcarefullyandkeepitforfuturereference.
INVERTERONE-TWO/ONE-THREE/ONE-FOURSPLIT-TYPE
ROOMAIRCONDITIONER
ReadThisManual
Insideyouwillfindmanyhelpfulhintsonhow
touseandmaintainyourairconditionerproperly.
Justalittlepreventativecareonyourpartcan
saveyouagreatdealoftimeandmoneyover
thelifeofyourairconditioner.You'llfindmany
answerstocommonproblemsinthechartof
troubleshootingtips.Ifyoureviewthechartof
TroubleshootingTipsfirst,youmaynotneed
tocallforservice.
18
SOCIABLEREMARK
DISPOSAL: Donotdisposethisproductasunsortedmunicipalwaste.Collectionofsuchwaste
separatelyforspecialtreatmentisnecessary.
Itisprohibitedtodisposeofthisapplianceindomestichouseholdwaste.
Fordisposal,thereareseveralpossibilities:
A)Themunicipalityhasestablishedcollectionsystems,whereelectronicwastecanbedisposedofat
leastfreeofchargetotheuser.
B)Whenbuyinganewproduct,theretailerwilltakebacktheoldproductatleastfreeofcharge.
C)Themanufacturewilltakebacktheoldappliancefordisposalatleastfreeofchargetotheuser.
D)Asoldproductscontainvaluableresources,theycanbesoldtoscrapmetaldealers.
Wilddisposalofwasteinforestsandlandscapesendangersyourhealthwhenhazardoussubstances
leakintotheground-waterandfindtheirwayintothefoodchain.
WhenusingthisairconditionerintheEuropeancountries,thefollowinformationmustbe
followed:
19
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