mundoclima MUEN-30-H6T Service manual

MODULAR CHILLER MUEN-H6
Installation & Owner's manual
English
CL25616
MUEN-30-H6T
www.mundoclima.com

NO.
NAME
1 2 3 4 5 6
Top coverAiroutlet Airinlet Waterinlet Electric
control box
Wateroutlet
MAINPARTSOFTHEUNIT
3 1
2
4
5 6
3

OPERATION&PERFORMANCE
a. Thestandardvoltageofpowersupplyis380-415V3N~50Hz,theminimumallowablevoltage is342V, andthemaximumvoltageis
456V.
b. Tomaintainbetterperformance,pleaseoperatetheunitunderthefollowingoutdoortemperature:
Operating range undercooling mode Operating range underheatingmode
-10 C~46 C -10 C~21 C
c. Theunitisof outlet watertemperaturecontrolmode
outletwatertemperaturecontrol cooling: minimumtemperature5 C,maximumtemperature17 C;heating: minimumtempera-
tureC,maximumtemperature50 C.
Performance characteristics oftheunit
Use conditionsoftheunit
Theair-cooledheatpumpmodularunitiscomposedofoneormoremodules.Eachmodulehasitsownindependentelectric
controlunit, andtheelectriccontrolunitsofmodulesconductinformationexchange through communicationnetwork.The
air-cooledheatpumpmodularunit ischaracteristicsofcompactstructureandeasytransportationandlifting,andinthemeanwhile,
italsosavesfacilities,includingcoolingtower, coolingpump, andsoon, fortheuser, andreducesinstallationcost.
Theunitsprovidecentralairhandlingdevicesorterminalequipmentwithchilledwaterorhotwater.Theunitisacompletely
independententiretytypeone,whichisdesignedtobeinstalledoutdoors(onthegroundorthe roof).Eachunit includessuchmain
partsashigh-efficientandlow-noisescrollcompressor,air-cooledcondenser,shell andtube(orplate)evaporator, micro-computer
controlcenter, andsoon. Thesepartsareinstalledonsteelstructurebase, sotheyaresoundanddurable.
TheunitappliesChinesemicro-computercontrolsystem,whichcanautomaticallyconductenergycontrolaccordingtothe
magnitudeofload,toachieveoptimalmatching andthusactuallyrealizingoptimalenergy-savingoperation.Theproductis
modularized unit, andparallelconnectionof16modulescanberealizedatmost,sotheusercanadoptmodulecombination
according hisowndemands.Theproductcan bewidelyappliedinair-conditioningengineeringofvariousnewly-builtandrebuilt
industrialandcivil buildings,suchasrestaurant,hotel,apartment,officebuilding,hospital,industrialplant,andsoon.The
air-cooledheatpumpmodularunitisthebestchoicefortheplacewhichhashighrequirementinnoiseandambientenvironment
andwhichisshort of water.
Cooling low water temperature
（Unit:℃）
Ambient
temperature
Outlet water
temperature
Cooling operating range
46
-10
Heating low water temperature
（Unit:℃）
Ambient
temperature
Outlet water
temperature
Heating operating range
21
Low water outlet temperature control—cooling: minimum temperature 0℃, maximum temperature 17℃(under this using condition,
the system must be added antifreeze agent); heating: minimum temperature 22℃, maximum temperature 50℃.
40
To activate low water outlet temperature control should be set the micro-switches on the
main PCB (see settings on page 12 of this manual).

1.PRECAUTIONS
Topreventinjurytotheuserorotherpeopleandproperty
damage,thefollowing instructionsmustbefollowed. Incorrect
operationduetoignoringofinstructionsmaycause harmor
damage.
Ask yourdealerforinstallationoftheairconditioner.
Incompleteinstallationperformedbyyourself mayresult ina
waterleakage, electricshock, andfire.
Ask yourdealerforimprovement, repair,andmaintenance.
Incompleteimprovement,repair,andmaintenancemay
resultinawaterleakage,electricshock, andfire.
Inordertoavoidelectricshock, fireorinjury,orif youdetect
anyabnormalitysuchassmelloffire,turnoff thepower
supplyandcall yourdealerforinstructions.
Neverreplaceafusewiththatofwrongratedcurrentor
otherwireswhenafuseblowsout.
Useofwireorcopperwiremaycausetheunit tobreakdown
orcauseafire.
Donotinsert fingers,rodsorotherobjectsintotheairinletor
outlet.
Whenthefanisrotatingat highspeed,itwillcauseinjury.
Neveruseaflammablespraysuchashairspray,lacqueror
paintneartheunit.
Itmaycauseafire.
CAUTION
Donot usetheairconditionerforotherpurposes.
Inordertoavoidanyqualitydeterioration,donotusetheunit
forcooling precisioninstruments,food,plants,animalsor
worksof art.
Beforecleaning,be suretostop the operation,turnthe
breakeroff orpull out the supplycord.
Otherwise,anelectricshock andinjurymayresult.
Inordertoavoidelectricshockorfire,makesurethatan
earthleakdetectorisinstalled.
Besuretheairconditionerisgrounded.
Inordertoavoidelectricshock,makesurethatthe unitis
groundedandthattheearthwireisnotconnectedtogasor
waterpipe, lightningconductorortelephoneearthwire.
Inordertoavoidinjury,donotremovethefanguardofthe
outdoorunit.
Donot operatetheairconditionerwithawet hand.
Anelectricshockmayhappen.
Donot touchtheheatexchangerfins.
Thesefinsaresharpandcouldresultincuttinginjuries.
Neverinspect orservicetheunit byyourself.
Ask aqualifiedservicepersontoperformthiswork.
Donotdisposethisproductasunsorted municipal
waste.Collectionofsuchwasteseparatelyforspecialtreatment
isnecessary.
Keepfarawayfromhigh-frequency equipment.
Keepawayfromthefollowingplaces:
aplacewhereitisfull ofoilgas;placeswheresaltyair
surrounding(nearthecoast);aplacewhereiscausticgas(the
sulfideinhotspring).Locationinthefollingplacesmaycause
malfunctionorshortenthelifespanof themanchine.
Inthecaceofextremelystrong wind,pleasepreventtheair
fromflowingbackwardsintotheoutdoorunit.
Snowcanopyisnecessaryinsonwfallplacesontheoutdoor
unit. Pleaseconsult thelocaldealerfordetails.
Inthe frequentthunderstruck place,lightningproofactions
shouldbe taken.
Topreventrefrigerantleak, contact yourdealer.
Whenthesystemisinstalledandrunsinasmallroom,itis
requiredtokeeptheconcentrationoftherefrigerant, ifbyany
chancecomingout,belowthelimit.Otherwise,oxygeninthe
roommaybeaffected,resultinginaseriousaccident.
Therefrigerantintheairconditionerissafeandnormallydoes
notleak.
Iftherefrigerantleaks intheroom,contactwithafireofa
burner,aheateroracookermayresult inaharmfulgas.
Turnoffanycombustibleheatingdevices,ventilatetheroom,
andcontactthedealerwhereyoupurchasedtheunit.
Donotusetheairconditioneruntilaservicepersonconfirms
thattheportionwheretherefrigerant leaksisrepaired.
WARNING
WARNING
Failuretoobserveawarningmayresult in death.
CAUTION
Thesafetyprecautionslistedherearedividedintotwocategories.In
eithercase,importantsafetyinformationislistedwhichmust beread
carefully.
Failuretoobserveacautionmayresultinjuryordamage
totheequipment.
CONTENTS PAGE
PRECAUTIONS..........................................................................1
TRANSPORTATION....................................................................................2
INSTALLATIONOFTHEUNIT.....................................................................3
WATERSYSTEMINSTALLATION..............................................................5
ELECTRICWIRING..................................................................................10
TRIALRUN..............................................................................................15
USE.........................................................................................................16
MAINTENANCEANDUPKEEP..................................................................20
APPLICABLEMODELSANDMAINPARAMETERS...............................25
ATTACHED DRAWING (I)......................................................................26
Installation & owner's manual Modular Chiller MUEN-H6
1
WIRE CONTROLLER (KJR-120D/BMK-E) ................................................ 27

Afteralonguse,checktheunitstandandfittingfordamage.
Ifdamaged, theunitmayfalland resultininjury.
Toavoidoxygendeficiency,ventilatetheroomsufficientlyif
equipmentwithburnerisusedtogetherwiththeair
conditioner.
Arrange thedrainhosetoensuresmoothdrainage.
Incompletedrainage maycausewetting ofthebuilding,
furnitureetc.
Neverexposelittlechildren,plantsoranimalsdirectlytothe
airflow.
Adverseinfluencetolittlechildren,animalsandplantsmay
result.
Noticetoavoidplaceswhereoperationnoisemayeasilybe
spreadawayorbeenhanced.
Noisecanbeamplifiedbyanythingblockingtheairoutletof
outdoorunit.
Chooseaproperplacethatthenoiseandhotorcoldwind
blownoutoftheoutdoorunitwillnotbringinconvenienceto
yourneighborsandnot affectthegrowthoranimalorplant.
Recommending locateandoperatethe equipmentatthe
altitudeheightnot exceededthan1000m.
2.TRANSPORTATION
Endurabletemperatureduringtransportationis-25 C~55 C.
Suchequipmentcould endure70 Cofthe maximum
temperaturein24hrs.
Donotallowachildtomountontheoutdoorunitoravoid
placinganyobject onit.
Fallingortumblingmayresultin injury.
Donotoperatethe airconditionerwhenusingaroom
fumigation-typeinsecticide.
Failuretoobservecould causethechemicalstobecome
deposited intheunit,whichcouldendangerthe healthof
thosewhoarehypersensitivetochemicals.
Donotplaceapplianceswhichproduceopenfireinplaces
exposedtotheairflowfromtheunit orundertheindoorunit.
Itmaycauseincompletecombustonordeformationofthe
unitduetotheheat.
Donotinstalltheairconditioneratanyplacewhere
flammablegasmayleakout.
Ifthegasleaks outandstays aroundtheairconditioner,a
firemaybreakout.
Theapplianceisnotintendedforusebyyoungchildrenor
infirmpersonswithoutsupervision.
Youngchildren shouldbesupervisedtoensurethattheydo
notplaywiththeappliance.
Fig.2-1 Liftingoftheunit
Handling oftheunit
Theangleofinclinationshouldnot bemorethan15ºwhencarryingtheunit,toavoidoverturnof theunit.
a. Rollinghandling:severalrollingrodsofthesamesizeareplacedunderthebaseof the unit, andthelengthofeachrodmust bemore
thantheouterframeof thebaseandsuitableforbalancingoftheunit.
b. Lifting:thestrengthliftingrope (belt)canbearshouldbe 4timestheweightoftheunit. Checktheliftinghookandensurethat it isfirmly
attachedtothe unit, andtheliftingangleshouldbemorethan60º. Toavoiddamagestotheunit, thecontactpositionof theunitandlifting
ropeshouldbeprovidedwithanatleast 50mmthick woodblock, clothorhardpaper.Anypersonisnot allowedtostandbelowtheunit
whenliftingit.
Liftingangle
Thepositionshouldbeprovidedwithanat
least 50mm thick woodblock,clothorhard
paper,toavoiddamagestotheunit.
Installation & owner's manual
2
Modular Chiller MUEN-H6

3.INSTALLATIONOFTHEUNIT
3.1Selection ofinstallationsites
3.1.1Theunitcanbeinstalledonthegroundoronthe
suitableroof,butenoughventilationvolumeshouldbe
ensuredinbothcases.
3.1.2Theunitshouldnotbeinstalledwherenoiseand
vibrationarerequiredtoacertainextent.
3.1.3Theinstalledunitshouldbeshelteredfromdirect
sunlightasmuchaspossible,andbefarawayfrom
boilerfluesandambientairwhichmayerodecondenser
coilsand coppertubepartsoftheunit.
3.1.4Iftheinstalledunitcan be approached by
unauthorizedpersons,safetymeasuresofisolation
shouldbetaken,suchasrailguards.Thesemeasures
willavoidartificialdamagesandaccidentaldamages,
andprevent thecontrolboxesfrombeingopenedleading
toexposureof electriccomponentsinoperation.
3.1.5Theheightoftheinstallationfoundationfortheunit
shouldnotbeless than300mm,andfloordrainsare
requiredininstallationsites,toensuresmoothdrainage
andremoveanyseeper.
3.1.6Incaseofinstallationontheground, thesteelbase
oftheunitshouldbelocatedontheconcretefoundation,
andtheconcreteplinthshouldextendbelowfrozensoil
layer.Thefoundationoftheunitshouldnot beconnected
tothefoundationofthebuilding,toavoidaffectingthe
peopleduetotransferofnoiseandvibration.Thebase
oftheunitisprovidedwithinstallationholes,whichcan
beusedtoconnecttheunit andthefoundationfirmly.
3.1.7Incaseofinstallationontheroof,theroofmust
possessenoughstrengthtosustainweightoftheunit
andmaintenancepersonnel.Theunitcanbesupported
onconcretefoundationsorchannelsteelframessimilar
tothoseused intheunitinstallationontheground.The
load-bearingchannelsteelmustbeinalignment withthe
installationholesoftheunitdamper,andthechannel
steelshould possessenough widthforinstalling the
damper.
3.1.8Consultthebuildingcontractor,thearchitectural
designerorotherspecialistsaboutthecaseswithspecial
installationrequirements.
Theselectedinstallationsiteof theunitshouldfacilitateconnection
ofwaterpipesandwires,andbefreefromwaterinletofoilfume,
steamorotherheatsources.Besides,the noiseof theunitandcold
andhotairshouldnotinfluencethesurroundingenvironment.
Fig.3-1
Table
3.1
Afterinstallingthespringdamper,thetotalheightoftheunit
willincreaseby135mmorso.
Theportsofinletandoutletpipesshouldbeflange ports,and
flangesshouldbehubbedslip-on-weldingsteelpipeflanges.
NOTE NOTE
Installation & owner's manual
3
Modular Chiller MUEN-H6
Front view
E F
D
Left view
C
Top view
A
3.2Outlinedimensional drawing (unit:mm)
A B C D E F
1514 841 1865 100 317 874
Model
G
200
MUEN-30-H6T

3.3Requirementsofarrangementspace oftheunit
3.3.1Requirementsof arrangement spaceoftheunit
3.3.1.1Toensureadequateairflowenteringthecondenser,
theinfluenceofdescendingairflowcausedbythe high-rise
buildingsaroundupontheunitshouldbe takenintoaccount
wheninstallingtheunit.
3.3.1.2If theunitisinstalledwheretheflowingspeedofairis
high,suchasontheexposedroof, themeasuresincluding
sunkfenceand Persianblindscanbetaken,topreventthe
turbulentflowfromdisturbing theairenteringtheunit. Ifthe
unitneedstobeprovidedwithsunkfence,theheightofthe
lattershouldnotbemorethanthatoftheformer;ifPersian
blindsarerequired,thetotal lossofstaticpressureshouldbe
less than the staticpressureoutsidethefan.The space
betweentheunitandsunkfenceorPersianblindsshouldalso
meetthe requirement oftheminimuminstallationspaceofthe
unit.
3.3.1.3Iftheunitneedstooperateinwinter,and the
installationsitemaybe coveredbysnow,theunitshouldbe
locatedhigherthanthesnowsurface,toensurethatairflows
throughthecoilssmoothly.
Fig.3-2
Input of airflow
Input of airflow
Input of airflowInput of airflow
3.4Space requirementsforparallelinstallation of
multiplemodularunits
Toavoidbackflowoftheairin thecondenserandoperational
faultsoftheunit,theparallelinstallationofmultiplemodular
unitscan followthedirectionAandDasshowninFig.3-2, the
spacesbetweentheunitandtheobstaclearegiveninTable
3.1,andthespacebetweenadjacentmodularunitsshouldnot
be less than 300mm;theinstallation can alsofollowthe
directionBandCasshowninFig.3-2,thespacesbetweenthe
unitandtheobstaclearegiveninTable3-1,andthespace
between adjacentmodularunitsshouldnotbeless than
600mm;the installation canalsofollowthe direction
combinationofAandD, andBandC,thespacesbetween the
unitand the obstaclearegiven inTable 3-1,the space
betweenadjacentmodularunitsinthedirection AandDshould
notbelessthan300mm,andthe spacebetweenadjacent
modularunitsinthedirectionBandCshouldnotbelessthan
600mm.If thespacesmentionedabovecannotbemet, theair
passingfromtheunittothecoilsmaybe restricted,orback
flowofairdischarge mayoccur,andtheperformanceofthe
unitmaybeaffected,ortheunit mayfailtooperate.
3.5Installation foundation
a.Theunitshouldbelocated onthehorizontalfoundation,the
groundfloorortheroofwhichcanbearoperatingweightof the
unitandtheweightofmaintenancepersonnel.RefertoTable
9.1(Table ofapplicablemodelsandparameters)foroperating
weight.
b.If theunitislocatedsohigh thatitisinconvenientfor
maintenancepersonneltoconductmaintenance,thesuitable
scaffoldcanbeprovidedaroundtheunit.
c.Thescaffoldmustbeabletobeartheweightofmaintenance
personnelandmaintenancefacilities.
d.Thebottomframeoftheunitisnotallowed tobeembedded
intotheconcreteofinstallationfoundation.
3.5.1Locationdrawingofinstallationfoundationoftheunit: (unit:
mm)
Schematicdiagramofinstallationdimensionoftheunit
ConcreteCement mortarDrainage channel
Table3-2
Fig.3-3
Fig.3-4
A D
Installation & owner's manual
4
Modular Chiller MUEN-H6
Installation space (mm)
A
B
C
D
E
≥1200
≥1200
≥1200
≥1200
≥2000
Drainage channel
Anchor bolt

3.6Installation ofdampingdevices
3.6.1Damping devices mustbeprovidedbetweentheunit
and itsfoundation.
Bymeansofthe Φ15mm diameterinstallationholesonthe
steelframeoftheunitbase,theunitcan befastenedon
the foundationthrough the springdamper.See
Fig.3-3(Schematicdiagramofinstallationdimensionofthe
unit)fordetailsaboutcenterdistanceoftheinstallation
holes.The damperdoesnotgowiththeunit,andtheuser
can selectthedamperaccording totherelevant
requirements.Whentheunit isinstalledonthehigh roofor
theareasensitivetovibration,pleaseconsulttherelevant
personsbeforeselectingthedamper.
3.6.2Installation stepsofthedamper
Step 1.Makesurethatthe flatness oftheconcrete
foundationiswithin ±3mm,andthenplacetheunitonthe
cushionblock.
Step 2. Raisethe unittotheheightsuitableforinstallation
of thedampingdevice.
c. Removetheclampnutsofthedamper.
Step 3.Placetheunitonthedamper,andalignthefixing
boltholesofthedamperwiththefixingholeson the unit
base.
Step 4.Returntheclampnutsofthedampertothefixing
holesontheunitbase,andtightenthemintothe damper.
Step 5.Adjusttheoperationalheightofthedamperbase,
andscrewdownthelevelingbolts.Tightentheboltsby
onecircletoensureequal heightadjustmentvarianceof
thedamper.
Step 6.The lockboltscanbetightenedafterthecorrect
operationalheight isreached.
Dampingdevice
Nut
Ferrol
Itisrecommendedthat thedampershouldbefastenedon
thefoundationwiththeprovidedholes.Aftertheunitis
placedonthefoundation, thedamperconnectedwiththe
unitshouldnot bemoved,andthecentral clampnutisnot
allowedtobetightenedbeforethedampersustainsload.
Fig.3-5
4.WATER SYSTEMINSTALLATION
4.1Basicrequirementsofconnection ofchilled
waterpipes
●Aftertheunitisinplace, chilledwaterpipescan belaid.
●Therelevantinstallationregulationsshould beabidedwith
whenconductingconnectionofwaterpipes.
●Thepipelinesshouldbefree ofanyimpurity,andallchilled
waterpipesmustconformtolocalrulesand regulationsof
pipelineengineering.
●Connectionrequirementsof chilledwaterpipes
a.Allchilledwaterpipelinesshouldbethoroughlyflushed,tobe
freeofanyimpurity,beforetheunitisoperated.Anyimpurity
shouldnot beflushedtoorintotheheatexchanger.
b.Watermustentertheheatexchangerthroughthe inlet;
otherwisetheperformanceoftheunit willdecline.
c.The inletpipeoftheevaporatormustbeprovidedwitha
targetflowcontroller,torealizeflow-breakprotectionforthe
unit.Bothendsofthetargetflowcontrollermustbesupplied
withhorizontalstraightpipesectionswhosediameteris5times
that of theinletpipe. Thetargetflowcontrollermustbeinstalled
instrictaccordancewith “Installation&RegulationGuidefor
TargetFlowController”(Figure4.3~4.4).Thewiresofthetarget
flowcontrollershouldbeledtotheelectriccabinetthrough
shieldedcable(seeElectricControllingSchematicDiagramfor
details).Theworking pressureofthetargetflowcontrolleris
1.0MPa,and itsinterfaceis1inchindiameter.Afterthe
pipelinesareinstalled,the targetflowcontrollerwillbe set
properlyaccordingtotheratedwaterflowoftheunit.
d.Thepumpinstalledinthewaterpipelinesystemshould be
equippedwithstarter.Thepumpwill directlypress waterinto
theheatexchangerofthewatersystem.
e.Thepipesandtheirportsmustbeindependentlysupported
butshouldnotbesupportedon theunit.
f.Thepipesandtheirportsoftheheatexchangershouldbe
easytodisassemble foroperationand cleaning,aswellas
inspectionof port pipesof theevaporator.
g.Theevaporatorshouldbeprovidedwithafilterwithmore
than40meshesperinchatsite.Thefiltershouldbeinstalled
neartotheinletportasmuchaspossible,andbeunderheat
preservation.
h.The by-pass pipesandby-passvalvesasshowninFig.4-1
mustbemountedfortheheatexchanger,tofacilitatecleaning
oftheoutsidesystemofwaterpassagebeforethe unitis
adjusted.Duringmaintenance,thewaterpassage oftheheat
exchangercan be cutoffwithoutdisturbing otherheat
exchangers.
i.Theflexibleportsshouldbeadoptedbetweentheinterfaceof
theheatexchangerandon-sitepipeline,toreducetransferof
vibrationtothebuilding.
j. Tofacilitatemaintenance,theinletand outletpipesshouldbe
providedwiththermometerormanometer.Theunitisnot
equippedwithpressureandtemperatureinstruments,sothey
needtobe purchasedbytheuser.
k.Alllowpositionsofthewatersystemshouldbeprovidedwith
drainageports,todrainwaterintheevaporatorandthe system
completely;andallhigh positionsshouldbesupplied with
discharge valves,tofacilitateexpellingairfromthepipeline. The
discharge valvesanddrainageportsshouldnotbeunderheat
preservationtofacilitatemaintenance.
CAUTION
NOTE
Installation & owner's manual
5
Modular Chiller MUEN-H6
Anchor bolt (M10X300)

l.Allpossiblewaterpipesinthesystemtobechilledshouldbe
underheatpreservation,includinginlet pipesand flangesofthe
heat exchanger.
m.Theoutdoorchilledwaterpipelinesshouldbewrappedwith
anauxiliaryheatingbeltforheatpreservation,andthematerial
oftheauxiliaryheatbeltshould be PE,EDPM,etc.,with
thicknessof20mm,topreventthepipelinesfromfreezingand
thuscrackingunderlowtemperature.Thepowersupplyofthe
heatingbeltshouldbeequipped withanindependent fuse.
n.Whentheambienttemperatureislowerthan2 C,andthe
unit willbenotusedforalongtime,waterinsidetheunitshould
bedrained.Iftheunitisnotdrainedinwinter,itspowersupply
shouldnotbecutoff, and the fancoilsinthewatersystemmust
beprovidedwiththree-wayvalves,toensuresmoothcirculation
of thewatersystemwhentheanti-freezingpumpisstartedupin
winter.
o.Thecommonoutletpipelinesofcombinedunitsshouldbe
providedwithmixingwatertemperaturesensor.
WARNING
●Forthewaterpipelinenetworkincludingfiltersandheat
exchangers,dreg ordirtmayseriouslydamagestheheat
exchangersandwaterpipes.
●Theinstallationpersonsorthe usersmustensurethe
qualityofchilledwater,andde-icingsaltmixturesandair
shouldbeexcludedfromthe watersystem,sincetheymay
oxidizeandcorrodesteelpartsinsidetheheat exchanger.
4.2Connectiondrawing ofpipelinesystem
Stop valve Pressuregauge Waterflowswitch Gatevalve Flexiblejoint
Y-shapedfilter ThermometerCirculatingpump Checkvalve Automaticdischargevalve
Symbol explanation
Fig.4-1
Incertainoccasion(especiallyinmanufacturecoolingprocess),
forconformingthesystemwatercontentrequirement,it’snecessary
tomountatankequippingwithacut-off baffleat thesystemtoavoid
watershort-circuit, Pleaseseethefollowingschemes:
kWistheunitforcoolingcapacityandListheunitforG
waterflowintheformulacountingtheminimumwaterflow.
Comfortabletypeairconditioner
G=coolingcapacity×2.6L
process typeaircooling
G=coolingcapacity×7.4L
4.3Design ofthetankinthesystem
Installation & owner's manual
6
Modular Chiller MUEN-H6
Main unit
Expansion tank
Water replenishing
Dirt discharge valve
Differential pressure by-pass valve
Two-way valve
Three-way valve
Terminal
Auxiliary electric heater

4.5Waterqualitycontrol
4.5.1Waterqualitycontrol
Whenindustrialwaterisusedaschilledwater,littlefurringmay
occur;however,wellwaterorriverwater,usedaschilledwater,
maycausemuchsediment,suchasfurring,sand,and soon.
Therefore,wellwaterorriverwatermustbefilteredandsoftened
insofteningwaterequipmentbeforeflowingintochilledwater
system. Ifsandandclaysettleintheevaporator, circulationof
chilledwatermaybeblocked,andthusleading tofreezing
accidents;ifhardnessofchilledwateristoohigh,furringmay
occureasily,andthedevicesmaybecorroded.Therefore,the
qualityofchilledwatershouldbeanalyzedbeforebeingused,
suchasPHvalue,conductivity,concentrationofchlorideion,
concentrationof sulfideion,andsoon.
<50ppm
<50ppm
<30ppm
<200μV/cm(25℃)
<0.3ppm
<50ppm
<50ppm
4.5.2Applicablestandardofwaterqualityfortheunit
PHvalue
Totalhardness
Conductivity
Sulfideion
Chlorideion
Ammoniaion
Sulfateion
Silicon
Ironcontent
Sodiumion
Calciumion
No
No
Norequirement
Table4-1
7～8.5
4.6Installation &regulationguidefortargetflow
controller
Pleasecarefullycheck flowswitchesbeforeconducting
installationofthetargetflowcontroller.Packingshouldbein
good condition,and theappearanceshouldbe free of
damageanddeformation.If anyproblem,pleasecontactthe
manufacturer.
Flowswitchescanbeinstalledinthehorizontalpipelineor
theverticalpipeline withupwardflowingdirectionbutcannot
bemountedinthepipelinewithdownwardflowingdirection.
Theinlet waterofgravityshouldbetaken intoaccountwhen
flowswitchesareinstalledin thepipelinewithupwardflowing
direction.
Targetflowcontrollermustbeinstalledon asectionof
straight-linepipeline,anditsbothendsmustbesupplied with
straight-linepipeswhoselengthisatleast5timesdiameter
of thepipe.Inthemeanwhile,thefluidflowingdirectioninthe
pipelinemustbeconsistentwiththedirectionofarrowonthe
controller.Theconnectionterminalshouldbelocated where
wiringconnectioncanbe easilydone.
Payattentiontothe followingitems when conducting
installationandwireconnection:
4.6.1
4.6.2
4.6.3
4.6.4
Error Recommendation
Fig.4-2
Recommendation
Error
Collisionofthewrenchwiththesoleplateoftheflowswitch
isprohibited,sincesuchcollisionmaycausedeformation
andfailureoftheflowswitch.
Toavoidelectricshock anddamagestothedevices,the
powersupplyshouldbecutoff, whenwiresareconnected
oradjustment isdone.
Whenwiringconnectionisconducted,adjustmentofother
screwsexceptconnectionterminalsofmicroswitchesand
groundscrewsisprohibited.Inthemeanwhile,overgreat
forceshouldnotappliedwhenwiresofmicroswitchesare
connected,otherwisemicroswitchesmaysuffer
displacement,thusleadingtofailureof flowswitches.
Specialgrounding screwsshould be used forearth
connection.Boltsshouldnotbeinstalledorremovedat
will;otherwiseflowswitchesmaysufferdeformationand
failure.
Flowswitcheshavebeensetat minimalflowvaluepriorto
ex-factory.Theyshould notbeadjusted belowthe
ex-factorysettingvalue,ortheymaysufferfailure.After
installingflowswitches,pleasepresstheflowswitchlever
severaltimestocheckthem.Whentheleverisfoundnot
torespondwith “clatter”,rotatethescrewinaclockwise
direction, until “clatter”occurs.
a.
b.
c.
d.
e.
4.4Selectionandinstallationofthepump
4.4.1Select thepump
a. Selectthewater-flowofthepump
Theratedwater-flowmustnolessthantheunitratedwater-flow;
intermsofmulti-connecttheunits,thatwater-flowmustnoless
thantotalunits’ratedwater-flow.
b. Selecttheleft of thepump.
H=h1+h2+h3+h4
H:Theliftofthepump.
h1:Mainunit waterresistance.
h2:Pumpwaterresistance.
h3:Waterresistanceofthelongestwater-loop distance, includes:
pipe resistance,differentvalve’sresistance,flexiblepipe
resistance,pipe elbowand three-wayresistance,two-way
resistanceorthree-wayresistance, aswellasfilterresistance.
H4: thelongest terminalresistance.
4.4.2Installationthepump
a.Thepumpshouldbe installedatthewaterinletpipe,bothof
whichsidesmustmountthesoft connectorsforvibration-proof.
b. Thebackuppumpforthesystem(recommended).
c.Unitsmustwithamainunitcontrols(Pleasesee Fig.5-3forthe
controlswiringdiagram).
Installation & owner's manual
7
Modular Chiller MUEN-H6

Determinewhetherthe flowswitchand the system
connectedwithitareingoodoperationaccordingtothe
measuredvaluebyflowmeter,namely,whenthemeasured
valueonflowmeterisless than60%ofratedwaterflowof
the unit,thetargetflowcontrollershouldbe cutoffand
observedfor3workingperiods,anditshouldbecovered
withflowswitchshell timely.
4.6.5
Fig.4-3
4.7Installationofsingle-modulewater systempipe-
line
Besuretodeterminethemodeloftargetsliceaccordingto
theratedflowoftheunit, thediameteroftheoutletpipe
andtheadjustmentrangeofthetargetsliceoftheflow
switch.Besides,thetargetsliceshouldnotcontactwith
otherrestrictorsinthepipelineorontheinnerwallofthe
pipeline, ortheflowswitchcannotbereset normally.
f.
5A 5A
● Schematicdiagramoftargetflowcontroller(see Fig.4-3Table4-2)
4.8Installation ofmulti-modulewatersystem pipeline
Multi-modulecombinationinstallation involvesspecialdesignof theunit,sorelevant explanationisgivenasfollows.
4.8.1Installation modeofmulti-modulecombination watersystem pipeline
No.nmodule
No.(n-1)address
No.1module No.(n-1)module
No.(n-2)address
No.0address
Fig.4-5
Fig.4-4
Totalwateroutlet
temperaturesensor
Wateroutlet
Waterinlet
Electric
controlbox
Drill deadholeat the
position, andmovethe
totaleffluent temperature
sensorat No.0address to
theposition
Waterflowswitch
Pump
Installation & owner's manual
8
Modular Chiller MUEN-H6
Table4-2
4.8.2Tableofdiameterparametersofmaininletand outletpip
30×1 30×9
30×2 30×10
30×11
30×12
30×13
30×14
30×4
30×15
30×3
30×16
30×5
30×6
30×7
30×8
40mm
65mm
80mm
100mm
125mm
Unit model x quantity Total inlet and outlet water
pipe inside nominal diameter Unit model x quantity Total inlet and outlet water pipe inside nominal diameter

Installation & owner's manual
9
Modular Chiller MUEN-H6
The minimum chilled water flow is shown in the table 4-3.
If the system flow is less than the minimum unit flow rate,
the evaporator flow can be recirculated, as shown in the
diagram.
4.9 Minimum chilled water flow
Fig. 4-6
Evaporator
Recirculation
For minimum chilled water flow rate
4.10 Maximum chilled water flow
The maximum chilled water flow is limited by the permitted
pressure drop in the evaporator. It is provided in the table 4-3.
If the system flow is more than the maximum unit flow rate,
bypass the evaporator as shown in the diagram to obtain a lower
evaporator flow rate.
For maximum chilled water flow rate
Evaporator
Recirculation
Fig. 4-7
4.11 Minimum and Maximum water flow rates
Table 4-3
Water flow rate(m3/h)
Maximum
Minimum
Item
Model
4.64 5.68
CAUTION
Pleasepayattentiontothefollowingitems wheninstallingmultiplemodules:
●Eachmodulecorrespondstoanaddresscodewhichcannotberepeated.
●Mainwateroutlettemperaturesensing bulb,targetflowcontrollerandauxiliaryelectricheaterareundercontrolofthemain
module.
●Onewired controllerandonetarget flowcontrollerarerequiredandconnectedonthemainmodule.
●Theunitcanbestartedupthroughthewiredcontrolleronlyafteralladdressesaresetandtheaforementioneditemsare
determined. Thewiredcontrolleris ≤500mawayfromtheoutdoorunit.
MUEN-30-H6T

5.ELECTRICWIRING
5.2Powersupplyspecification
Table5-1 Outdoorpowersupply
Power
supply Manual
switch Fuse Wiring
Item
Model
380-415V
3N~50Hz 50A 36A10mm2
(<30m)
Noadditionalcontrolcomponentsarerequiredintheelectric
cabinet(suchasrelay, andsoon),andthepowersupplyand
controlwiresnotconnectedwiththeelectriccabinetarenot
allowed togothrough theelectricbox.Otherwise,
electromagneticinterferencemaycausefailureoftheunit
andcontrolcomponentsandevendamagestothem,which
thusleadtoprotectivefailure.
Allcablesled totheelectricboxshouldbe supported
independentlybut bytheelectricbox.
Thestrong currentwiresgenerallypass the electricbox,and
220-240Valternatingcurrentmayalsopassthecontrol
board,sowiringconnectionshouldconformtotheprinciple
ofseparationofstrongcurrentandweakcurrent,andthe
wiresofpowersupplyshouldbekeptmorethan100mm
awayfromthecontrolwires.
Onlyuse380-415V3N~50Hzratedpowersupplyfortheunit,
andthemaximumallowablerangeofvoltageis342V~456V.
Allelectricwiresmustconformtolocalwiringconnection
norm.Thesuitablecablesshouldbeconnectedtopower
supplyterminal through wiring connectionholesatthe
bottomoftheelectriccabinet.AccordingtoChinese
standard,theuserisresponsibleforprovidingvoltage and
currentprotectionfortheinputpowersupplyoftheunit.
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3Requirementsofwiringconnection
5.3.6Allpowersuppliesconnectedtotheunitmustpassone
manualswitch,toensurethatthe voltageson allnodesof
electriccircuit of the unitarereleasedwhenthe switchiscutoff.
5.3.7Thecablesofcorrectspecificationmustbeusedtosupply
powerforthe unit. Theunitshoulduseindependentpower
supply,andthe unitisnotallowedtousethesamepowersupply
togetherwithotherelectricdevices,toavoid over-loaddanger.
Thefuseormanual switchofthepowersupplyshouldbe
compatiblewithworkingvoltageandcurrentofthe unit. Incase
ofparallelconnectionofmultiplemodules,therequirementsof
wiringconnectionmodeandconfigurationparametersforthe
unitareshowninthe followingfigure.
5.3.8Someconnectionportsin the electricboxareswitch
signals,forwhichtheuserneedstoprovidepower,andthe
ratedvoltageofthepowershouldbe220-240VAC.Theuser
mustbeawarethatallpowersuppliestheyprovidedshouldbe
obtainedthrough powercircuitbreakers(providedbytheuser),
toensurethatallvoltagesonthenodesoftheprovidedpower
supplycircuitarereleasedwhenthecircuit breakersarecut off.
5.3.9Allinductivecomponentsprovidedbytheuser(suchas
coilsofcontactor,relay,andsoon)mustbesuppressedwith
standardresistance-capacitancesuppressors,toavoid
electromagneticinterference,thusleadingtofailureofthe unit
anditscontrollerandevendamagestothem.
5.3.10Allweakcurrentwiresledtotheelectricboxmustapply
shieldedwires,whichmustbeprovidedwithgroundingwires.
Theshieldwiresand powersupplywiresshouldbe laid
separately, toavoidelectromagneticinterference.
5.3.11Theunitmustbeprovided withgroundingwires,which
arenotallowed tobeconnectedwiththegroundingwiresof gas
fuelpipelines,waterpipelines,lightning conductorsor
telephones.Improperearthconnectionmaycauseelectric
shock,sopleasecheckwhetherearthconnectionoftheunitis
firmornot frequently.
Outdoor
unit 1
Outdoor
unit 2
Outdoor
unit 3
Outdoor
unit 4
Outdoor
unit N
Manualswitch
Manualswitch
Manualswitch
Manualswitch
Manualswitch
Only16modularunitscanbecombinedatmost.
5.4Wiringsteps
Step 1.Check the unitand ensurethatitisconnectedwith
groundingwirescorrectly,toavoidleakage,andthegrounding
devicesshould bemounted instrictaccordancewiththe
requirementsofelectricalengineeringrules.Thegroundingwires
canprevent electricshock.
Step2.Thecontrol boxofthe mainpowerswitchmustbe
mountedinaproperposition.
Step 3.Wiringconnectionholesofthemainpowershouldbe
providedwithgluecushion.
Step 4.Themainpowerandneutralwiresandgroundingwiresof
powersupplyareled intotheelectricboxof theunit.
Step 5.Thewiresofthemain powermust pass thebondingclamp.
Step 6.Wiresshould beconnectedfirmlytothe connection
terminalsL1, L2,L3, NandPE.
Fig.5-1
NOTE
5.1Electricwiring
1.Theair-conditionershouldapplyspecialpowersupply,whose
voltageshouldconformtoratedvoltage.
2. Wiring constructionmust beconductedbytheprofessional
techniciansaccording tothelabelingonthecircuitdiagram.
3.Thepowerwireandthegroundingwiremust be connected
thesuitable terminals.
4.Thepowerwireandthegroundingwiremust be fastenupby
suitabletools.
5.Theterminalsconnectedthepowerwireandthegrounding
wiremustbefullyfastenedand regularlychecked,incaseto
becomeflexible.
6. Onlyusetheelectriccomponentsspecifiedbyourcompany,
andrequireinstallationandtechnicalservicesfromthe
manufacturerorauthorizeddealer.If wiringconnectionfailsto
conformtoelectricinstallationnorm,failureofthecontroller,
electronicshock,andsoonmaybe caused.
7.Theconnectedfixedwiresmust be equippedwithfull
switching-offdeviceswithatleast 3mm contactseparation.
8. Set leakageprotectivedevicesaccordingtotherequirements
of nationaltechnicalstandardaboutelectricequipment.
9.Aftercompletingallwiringconstruction,conductcarefulcheck
beforeconnectingthepowersupply.
10.Pleasecarefullyreadthelabelsontheelectriccabinet.
11. Theuser’sattempt torepairthecontrollerisprohibited, since
improperrepairmaycauseelectricshock, damagestothe
controller,andsoon.If theuserhasanyrequirement of repair,
pleasecontact the maintenancecenter.
CAUTION
Installation & owner's manual
10
Modular Chiller MUEN-H6
MUEN-30-H6T

Step 7.Phasesequencesmustbeconsistent whenthewiresofthemainpower.
Step 8.Themainpowershouldbelocatedoutofeasyreachofnon-professionalmaintenancepersonnel,toavoidmal-operationand
improvesafety.
Step 9.Connectionofcontrolwiresofwaterflowswitches:thewireleads(preparedbytheuser) of waterflowswitchesareconnected
totheconnectionterminalsW1andW2ofthemainunit.
Step 10.Connectionofcontrolwiresofauxiliaryelectricheaters:thecontrolwiresofACcontactoroftheauxiliaryelectricheatermust
passtheconnectionterminalsH1andH2ofthemainunit, asshowninFig. 5-2.
Step 11.Connectionofcontrolwiresofpump:thecontrolwiresofACcontactorof thepumpmustpasstheconnectionterminalsP1and
P2of themainunit, asshowninFig.5-3.
Step 12.The connectionwayofthewirecontrollerconnectswitheverysignalwiresfrompackageunits:signalwiresP,Q,Eare
connectedinthesamewayof mainwiresconnectionmethodandaccordinglyconnect totheterminalsP, Q,Einthewirecontroller.
H1
H2
P1
P2
Fig.5-2 Fig.5-3
Fig.5-4
Overcurrent relay
ControlcoilofAC contactor
Overcurrent relay
ControlcoilofAC contactor
Switch(Fortrialrunof pump)
5.5Electriccontrolschematicdiagram oftheunit
55 1 Electric controldiagramofthemain unitandsubordinateunits(seeAttachedDrawing(I))
5.5.2Indicatingdiagramof electriccontrolof main controlboard(seeFig.5-4
Installation & owner's manual
11
Modular Chiller MUEN-H6
The picture is for reference only, refer to the actual board.
1
3 4 22 65
13 14 29303734 10 11
17
12
33
7
18
16
15
35
92
8
24
28
25
38
32 19 20 21 31 23 26 36 27

5.6Detail descriptionforparts(fig.5-4)
Table5-2
Installation & owner's manual
12
Modular Chiller MUEN-H6
1
2
3
5
6
Detail information
Detection of current of the compressor A (protection code P4)
T4: outdoor ambient temperature sensor (fault code E7)
T3B: pipe temperature sensor of the condenser B (fault code E6 and protection code P7)
T3A: pipe temperature sensor of the condenser A (fault code E5 and protection code P6)
1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric
control of the unit. Start outdoor fan A only, startAand B gears, and control the unit through T4.
2) T3B and T3A: when the electric control of the modular unit detects the temperature of the outdoor
pipe T3Aor T3B of the system exceeds the protective temperature 65。C, the corresponding system
will be shut down. And it will be re-started up, after the temperature drops below the recovery tempera-
ture 60。C. Another system will be not affected.
3) T4, T3B and T3A: when the temperature sensor is detected to suffer open circuit or short circuit, fault
alarm will occur.
●When the main unit suffer fault of temperature sensor: the main unit and subordinate units will be shut
down.
●When the subordinate unit suffer fault of temperature sensor: the unit will be shut down, but other
subordinate units will not be affected.
Unit outlet water temperature sensor (fault code E4)
Under refrigeration mode and heating mode, conduct adjustment according to the magnitude of unit outlet
water temperature.
Adjustment range of constant speed capability: ON and OFF.
Total outlet water temperature sensor (fault code E3)
Only the main unit is valid, and the subordinate units are invalid.
Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet
watertemperature. Adjustment range: Load, stabilize, unload, Emergency Stop.
7
8
No.
Detection of current of the compressor B (protection code P5)
Current is not detected within the initial 5 seconds after the compressor is started up. When the current of
the compressor is detected to exceed protective value setor constant speed compressor), it will be shut
down and re-started after some minutes.
Spot check. The operating status of outdoor system can be observed through spot check, and specific display
contents are as shown in the following figure:
●Display contents of “operating mode”: 1. cooling; 2. heating; 4. pump; 8. Stand-by
●Display contents of “number of online units”: the main unit can display the number of online units, and the
subordinate unit displays 0.
Factory setting
Normal display
Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenser A
T61 frost-proof temp Unit outlet water temp Unit inlet-water temp Temp. of the condenser B
TXV opening A TXV opening B Operating current of system A Operating current of system B The last failure
Mode
Outlet water temp.
Cooling(S5 address)
Default(OFF)
5~17℃
Low water temp.(ON) 0~17℃
Heating(S4 address)
Default (OFF) 40~50℃
Low water temp. (ON) 22~50℃
Mode
Ambient temp.
Cooling
Normally（S8 address OFF）
10~46℃
Low temp. (S8 address ON)
-10~46℃
Remote setting
Control only with wire control (OFF)
With remote function (ON)
Remote (S7 add.)
Note: S2, S3 and S9 have reserved function.

Installation & owner's manual
13
Modular Chiller MUEN-H6
9
10
11
12
13
14
15
Detail information
No.
COM (I) 485 communication port (fault code E2)
COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication.
1) If faults occur between the wired controller and the main unit module, all modules will be shut down.
2) If faults occur between the main unit and subordinate units, the subordinate unit module suffering
communication fault will be shut down. Less units will be detected by the wired controller, which may
display EC, and in the meanwhile, the indicator lamp of the wired controller will flash.
estart 3 minutes later after malfunction be removed.
8
9
A
B
C
D E F
8 7 6 5
4
3
2
1
0
0 1 2 3
4
5
6
7
8
F
E
D
C
B A 9 8
ADDRESS
ADDRESS
When the address
is 1,2,3……F, it
serves as the
subordinate unit
1,2,3……15.
When the
address is 0, it
serves as the
main unit.
Each modular part of modular unit has the same
electric control function, and the main unit and
subordinate units can be set through address code
on the electric control board. The address code 0 #
is provided as the main unit. The priority of being
the main unit is given to the unit with digital
compressor, and other addresses are subordinate
units. Only the unit is chosen as the main unit, its
electric control can activate such functions as
direct communication with the wired controller,
refrigerating and heating capability adjustment,
pump control, auxiliary electric heater control, total
effluent temperature detection and water flow
switch detection.
COM (O) 485 communication port (fault code E2)
high-pressure protection of the system A and discharge temperature switch protection (protection code P0);
high-pressure protection of the system B and discharge temperature switch protection (protection code P2);
low-pressure protection of the system A (protection code P1);
low-pressure protection of the system B (protection code P3);
Constant speed compressor: connection of discharge temperature switch and high-pressure switch of the
system in series.
Inlet water temperature sensor (fault code EF)
Shell and tube low-temperature ant-freeze sensor (fault code Eb)
Water flow detection (fault code of the main unit E9) is only valid for the main unit but invalid for subordi-
nate units.
1) Main unit: if abnormal water flow occurs , the main unit board and the wired controller will display fault
code E9.
2) Subordinate unit: (water flow detection will not be done).
16 Power phase detection (fault code E1)
17 Electronic expansion valve of the system B
Electronic expansion valve of the system A
Electronic expansion valve is used to control refrigerant flow under different operating modes and different loads.
18
19
Auxiliary electric heater
Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220-230V control
power supply, so special attention should be paid when installing the auxiliary electric heater.
Attention!
Under heating mode, when the main unit board detects total water outlet temperature to be lower than 45℃, the
switch will be closed, and the auxiliary electric heater will begin to work; when the total water outlet temperature
is higher than 50℃, the switch will be opened, and the auxiliary electric heater will stop working.

Installation & owner's manual
14
Modular Chiller MUEN-H6
1. Faults
When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the subordinate unit suffers faults, only the unit stops operating, and other units are not affected.
2. Protection
When the main unit is under protection, only the unit stops operating, and other units keep running;
When the subordinate unit is under protection, only the unit stops operating, and other units are not affected.
CAUTION
Detection of current of the compressor B2 (protection code P5)
Plate heat exchanger heater/Pump heater port(DC 12V signal).
20
21
22
23
24
25
26
27
28
Detail information
No.
PUMP.
Attention: the control port value of the pump actually detected is ON/OFF but not 220-230V control power supply, so
special attention should be paid when installing the pump.
1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in
the process of operation.
2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating.
3) In case of shutdown under the pump mode, the pump can be directly shut down.
Input of transformer, 220-230V AC current. (only valid for the main unit)
One compressor of the system B(B1);
Neutral wire;
One compressor of the system A(A1);
Neutral wire.
Numerical code tube.
1) In case of stand-by, the address of the module is displayed;
2) In case of normal operation, 10. is displayed (10 is followed by dot).
3) In case of fault or protection, fault code or protection code is displayed.
Four-way valve of the system B;
Neutral wire.
Four-way valve of the system A; Neutral wire.
Outdoor fan A, controlled by T4.
Outdoor fan B, controlled by T4.
PWM pressure relif valve control(for digital compressor)
Input of three-phase four-wire power supply (fault code E1)
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be
120º among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will
be displayed. When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase
dislocation of power supply are detected only in the early period after the power supply is connected, and they are not
detected while the unit is in operation.
29 Output of transformer
31
34
35
36
37
38
32
33
One compressor of the system B(B2); Neutral wire;
One compressor of the system A(A2) ; Neutral wire.
30 Power port for the current board
The alarm signal output of the unit(ON/OFF signal)
Remote control port(ON/OFF signal,effect on NO.0 unit)
Remote mode control port(ON/OFF signal,effect on NO.0 unit)
2、If the port is closed,the unit is turned on,else,the unit is turned off.
2、First,the ON/OFF port is closed,second,if this port is closed,the unit enters the heating mode,else,the unit enters
the cooling mode.
1、Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode
(the wire controller is invalid)
1、Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode
(the wire controller is invalid)
Anti-freezing pressure protection of the system A(protection code Pc)
Anti-freezing pressure protection of the system B(protection code Pd)

6.TRIALRUN
6.1Pointsforattention priortotrialrun
Afterthewatersystempipelineisflushedseveraltimes,pleasemakesurethatthepurityofwatermeetstherequirements;the
systemisre-filledwithwateranddrained,andthepumpisstartedup,thenmakesurethatwaterflowandthepressureattheoutlet
meet therequirements.
Theunitisconnectedtothemainpower12 hoursbeforebeingstartedup,tosupplypowertotheheatingbeltandpre-heatthe
compressor.Inadequatepre-heatingmaycausedamagestothecompressor.
Settingof thewiredcontroller. Seedetailsof themanualconcerningsettingcontentsofthecontroller,includingsuchbasicsettingsas
refrigeratingandheatingmode,manualadjustmentand automaticadjustmentmode andpumpmode.Undernormalcircumstances,
theparametersaresetaroundstandardoperatingconditionsfortrialrun,andextremeworkingconditionsshouldbepreventedas
muchaspossible.
Carefullyadjust thetarget flowcontrolleronthe watersystemorthe inletstopvalveoftheunit, tomakethewaterflowofthesystem
be90%of thewaterflowspecifiedinTable7-1.
6.1.1
6.1.2
6.1.3
6.1.4
6.2Checkitem tableafterinstallation
Checkingitem Description Yes No
Whetherinstalling site
ismeetforrequirements
Whetherwatersystem
ismeeting for
requirements
Whetherelectricwiring
systemismeeting for
requirements
Unitsarefixedmountingonlevelbase.
Ventilatingspaceforheatexchangeratthe
airsideismeetingforrequirement
Maintenancespaceismeetingforrequirement.
Noiseandvibrationismeeting forrequirement.
Sunradiationandrainorsnowproofmeasuresare
meetingforrequirements.
Externalphysicalismeetingforrequirement.
Pipediameterismeetingforrequirement
Thelengthofsystemismeetingforrequirement
Waterdischargeismeetingforrequirement
Waterqualitycontrolismeetingforrequirement
Flexibletube’sinterfaceismeetingforrequirement
Pressurecontrolismeetingforrequirement
Thermalinsulationismeeting forrequirement
Wirecapacityismeetingforrequirement
Switchcapacityismeetingforrequirement
Fusecapacityismeetingforrequirement
Voltageandfrequency aremeetingforrequirement
Connectingtightlybetweenwires
Operationcontroldeviceismeetingforrequirement
Safetydeviceismeetingforrequirement
Chainedcontrol ismeetingforrequirement
Phasesequenceofpowersupplyismeetingfor
requirement
Table6-1
Installation & owner's manual
15
Modular Chiller MUEN-H6

CAUTION
6.3Trialrun
6.3.1Startupthecontrollerandcheckwhethertheunitdisplaysa
faultcode.If afault occurs, removethefaultfirst, andstart the
unitaccordingtotheoperatingmethodinthe “unitcontrol
instruction”,afterdeterminingthatthereisnofaultexistingin
theunit.
6.3.2Conducttrialrunfor30 min.Whentheinfluentandeffluent
temperaturebecomesstabilized,adjustthewaterflowto
nominalvalue, toensurenormaloperationoftheunit.
6.3.3Aftertheunitisshutdown,itshouldbeputintooperation10
minlater,toavoidfrequentstart-upoftheunit.Intheend,
checkwhethertheunitmeetstherequirementsaccordingto
thecontentsinTable9.1.
●Thetargetflowcontrollermustbeinstalledcorrectly.The
wiresofthetarget flowcontrollermust beconnectedaccording
toelectriccontrolschematicdiagram,orthefaultscausedby
waterbreakingwhiletheunitisinoperationshouldbethe
user’sresponsibility.
●Donotre-starttheunitwithin10minaftertheunitisshut
downduringtrialrun.
●Whentheunitisusedfrequently,donotcutoffthepower
supplyaftertheunitisshutdown;otherwisethe compressor
cannot beheated, thusleadingtoitsdamages.
●Iftheunitisnotinserviceforalongtime,andthepower
supplyneedstobecut off, theunitshouldbeconnectedtothe
powersupply12hourspriortore-startingoftheunit,to
pre-heat thecompressor.
7.USE
●Theunitcan controlstart-upandshut-downof theunit, so
whenthewatersystemisflushed, theoperationof thepump
shouldnot becontrolledbytheunit.
●Donot start uptheunit beforedraining thewatersystem
completely.
7.1Useconditionsoftheunit
Fig.7-1
14 13
3
1
2
4
16
11
15
5
6
7
8
9
10
11
12
4
1.Operation icon
2.Modearea
3.Settingtemperature
4.TimingOn/Off
5.Function Icon
6.On-lineUnitQty. Indication
7.Reserved
8.Clock
9. Watertemp.
10.ON/OFFKey
11.Right, LeftRightKey
12.OKkey
13. Setting key
14.Add,Reducekey
15. Cancelkey
16. Reserved . key
(Press for3secto
canceltimer) (Press for3secto unlock)
AUXILIARY
Installation & owner's manual
16
Modular Chiller MUEN-H6

7.2Operatinginstructionsofbuttons
1
2
3
4
5
Operationicon :IndicatetheONandOFFstatus; when itisON,
it will display; whenit isOFF, it will disappear;
Modearea: Indicatethemainunitoperatingmode;
Settingtemperature:3statuscanbe displayed: ;
Timing ON/OFFindication: Indicatethe timinginformation;
Functionicon
1)Computer: Displaywhenconnectstocomputer;
2)Maintenance: Whentheiconislighted on itmeansshouldarrange
professionalstodo the cleaningmaintenance;longpress
“AUXILIARY”for3secondsthen thisiconwill beoff, untilthe
next maintenance;
3)E-heating: Displaywhentheelectricauxiliaryheatingwater
functionisoperated;
4)Check: Displaywhen checkfunctionisoperated;
5)Anti-freezing:Displaywhenthemainunitambienttemperatureis
below2 , toremindthemainunitshouldbedotheanti-freezing
measurement;
6)Lock: When the icon islightedon, itmeansthe button hasbeen
locked(no keys operationfor2minutes),longpress “OK”keyfor
3secondstounlock;
7)Error:Whenthemainunit haserrororprotection, thisiconwill be
displayed. Theunit need tobemaintainedbyprofessionals.
6
7
8
9
10
11
12
13
14
On-lineunitqty.indication: Undernormalstatusdisplaythe quantityof
theunitsconnectedtothewired controller;undercheckstatusdisplaythe
deviceserialnumber;
Reserved;
Clock: Undernormalstatusdisplayclock;during timing setting itdisplays
thesettingtiming time;
Watertemperature: Undernormalstatusdisplaywatertemperature; during
watertemperaturesettingitdisplaysthe settingnumericalvalue; underthe
checkstatusdisplaycheckparameter;
Wired controllerthechecksequenceisasfollows：
ON/OFFkey: OnandOff functions;
Right,Leftkey: Undermainpage topress thiskeycanquerythe setting
watertemperature,setting timing etc;during timing setting pressthe right
keythen shift to the next stepsetting;during spotchecktheyareused to
turnovertheunit parameterinformation;
OKkey: Aftersetting the parameterthen pressthiskeytoconfirm.After
keyslockingthenlong pressthiskeyfor3secondstounlock;
Settingkey: Settingthe watertemperature, timing, modeetc,longpress
thiskeyfor3secondsentertothecheck;
Add,Reducekey: Settingwatertemperature,timing,waterleveletc;
during spot check theyareused toread over#0～#15units;
1
2
3
4
Outlet watertemperatureTou->
Inlet watertemperatureTin->
5Current of the compressorIA->
Current of the compressorIB->
Outdoorpipe temperatureT3A->
Outdoorambient temperaturesT4->
Outdoorpipe temperatureT3B->
6
7
8
9
10
11
Anti-frozen temperatureT6->
Electronic expansion valvopening FA->
12 Last thirderrororprotection ->
Outlet watertemperature Tou……
Last one errororprotection ->
Electronic expansion valvopening FB->
Last second errororprotection->
13
1
Cancelkey: Duringsetting parameterspressthiskeytocancelsetting.
Aftertiming settingand then long pressthiskey3secondstocancel
timing;
Reserved key.
15
16
7.3ON/OFF
FollowthefollowingdiagramforsystemON/OFF
Turnontheunit
Press “setting”keytoset theintended
mode.
Poweruptomodule unitandinitiallydeliver
powertowiredcontroller.
Press “Add/Reduce”keytoset the
intendedtemperature.
Press “OK”keytosavethesettings.
Unitwillrunafterpress “ON/OFF”
key7minuteslater.
Turnofftheunit
Whenintendtoshuttheunit
Press “ON/OFF”key
Toselectturn-off settings
Fig.7-2
Installation & owner's manual
17
Modular Chiller MUEN-H6