2. Danfoss
  3. Termix Compactstation 28 MS VVX

Danfoss Termix Compactstation 28 MS VVX Operating instructions

  • Hello! I'm your chat assistant, and I've analyzed the provided Operating Guide for the Danfoss Termix Compact 28 MS VVX district heating substation. This document covers essential aspects, including safety precautions, installation, start-up procedures, and troubleshooting tips. It also details the features of the device, such as its efficient heat exchanger and electronic regulation. I am ready to answer your questions about this device!
  • What type of buildings is the Termix Compact 28 MS VVX intended for?
    What are the main functions of the Termix Compact 28 MS VVX?
    What materials are the pipes and components made of?
    What is the maximum operating pressure of the substation?
    What should I do if I notice discolored or bad-smelling domestic hot water?
OperatingGuide
TermixCompact28MSVVX
1.0TableofContents
1.0TableofContents.............................................1
2.0Functionaldescription......................................2
3.0Safetynotes.....................................................3
3.1SafetyNotes–general............................................3
4.0Mounting........................................................4
4.1MountingtheCompactstation..................................4
4.2Start-up..............................................................10
4.3Electricalconnections.............................................12
5.0Design.............................................................13
5.1Design...............................................................13
5.2Schematicdiagram................................................14
6.0Controls..........................................................15
6.1Heatingcircuit......................................................15
6.2Other.................................................................19
6.3Maintenance........................................................20
7.0Troubleshooting..............................................21
7.1Troubleshootingingeneral......................................21
7.2TroubleshootingDHW............................................22
7.3TroubleshootingHE...............................................23
7.4Disposal.............................................................25
8.0Declaration......................................................27
8.1Declarationofconformity........................................27
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2.0Functionaldescription
Districtheatingsubstationforindirectheatingand
instantaneousdomestichotwater.
Spaceheatinganddomestichotwater(DHW)
TheTermixCompact28MSVVXisacompleteunitforindirect
spaceheatinganddomestichotwaterfordistrictheatinginlarge
buildingssuchassportscentres,schools,blocksofflatsetc.
Itcanbeusedforconnectiontoindirectdistrictheatinginplaces
wherethedistrictheatingplantrequiresahydraulicbreak.Itis
alsosuitableforconversiontodistrictheatingwhenthesecondary
heatingsystemisunsuitabletobeingconnectedtodirectdistrict
heatingorwhenaparticularlyeffectivesecurityagainstleakagein
theheatingsystemisrequired.
Efficientheatexchanger
Thesubstationisfittedwithanefficientplateheatexchanger,
whichensuresthemostfavourableheatextractionandachieves
optimumcomfortandoperatingeconomy.
Electronicregulation
TheTermixCompact28MSVVXisbuiltwithaplateheatexchanger
forinstantaneousdomestichotwaterproductionandheat
exchangerforspaceheating.Eachcircuitisalsosuppliedwithits
ownflowcontroller.
Thisallowsthegreatestdegreeofindividualcontrol,thus
preventingoscillationatdifferentloads.Theelectroniccontrolleris
factorypre-set.Electricalcomponentsarepre-wired,andtheunitis
equippedwithaplugfor230Va.c.
Itisrecommendedthatbalancingvalvesareinstalledinthe
building’srisersintheheatsupplyandontheheatingsystem’s
returnlineimmediatelybeforetheunit.
Minimalheatloss
Completeinsulationoftheunitensuresminimalheatloss.
Easyinstallation
Theunitconsistsoftwomodules,oneforspaceheatingandone
fordomestichotwaterproduction,whichiseasilyassembled
intoonesinglemodule.Thismodulardesignmakesworkduring
installationsignificantlyeasier,astheweightissplitbetweentwo
modulesduringhandling.
Flexiblesolution
Pipeconnectioncanbemadefromeitherthetoporbottom,which
makesthissolutionhighlyflexible.Atthesametime,bothspace
andtimearesavedwheninstalling.
Reliableandeasytoinstall
TermixCompact28MSVVXisoperationallyreliable.Aquality
productmanufacturedinDenmarkwhichiseasytoinstalland
quicklycommissioned.
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3.0Safetynotes
3.1SafetyNotes–general
Thefollowinginstructionsrefertothestandarddesignof
substation.Specialversionsofsubstationsareavailableon
request.
Thisoperatingmanualshouldbereadcarefullybeforeinstallation
andstart-upofthesubstation.Themanufactureracceptsno
liabilityfordamageorfaultsthatresultfromnon-compliancewith
theoperatingmanual.Pleasereadandfollowalltheinstructions
carefullytopreventaccidents,injuryanddamagetoproperty.
Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.
Pleasecomplywiththeinstructionsissuedbythesystem
manufacturerorsystemoperator.
Corrosionprotection
Allpipesandcomponentsaremadeofstainlesssteelandbrass.
Themaximumchloridecompoundsoftheflowmediumshouldnot
behigherthan150mg/l.
Theriskofequipmentcorrosionincreasesconsiderablyifthe
recommendedlevelofpermissiblechloridecompoundsis
exceeded.
Energysource
Thesubstationisdesignedfordistrictheatingastheprimary
sourceofenergy.However,alsootherenergysourcescanbeused
wheretheoperatingconditionsallowitandalwaysarecomparable
todistrictheating.
Application
Thesubstationisdesignedtobeconnectedtothehouse
installationinafrost-freeroom,wherethetemperaturedoesnot
exceed50°Candthehumiditydoesnotexceed60%.Donotcover
orwallupthesubstationorinanyotherwayblocktheentrance
tothestation.
Choiceofmaterial
Choiceofmaterialsalwaysincompliancewithlocallegislation.
Safetyvalve(s)
Werecommendmountingofsafetyvalve(s),however,alwaysin
compliancewithlocalregulations.
Connection
Thesubstationmustbeequippedwithfeaturesthatensurethat
thesubstationcanbeseparatedfromallenergysources(also
powersupply).
Emergency
Incaseofdangeroraccidents-fire,leaksorotherdangerous
circumstances-interruptallenergysourcestothestationif
possible,andseekexperthelp.
Incaseofdiscolouredorbad-smellingdomestichotwater,closeall
shut-offvalvesonthesubstation,informtheoperatingpersonnel
andcallforexperthelpimmediately.
REACH
AllDanfossA/SproductsfulfilltherequirementsinREACH.
OneoftheobligationsinREACHistoinformcustomersabout
presenceofCandidatelistsubstancesifany,weherebyinform
youaboutonesubstanceonthecandidatelist:Theproduct
containsbrasspartswhichcontainslead(CASno:7439-92-1)ina
concentrationabove0.1%w/w.
Storage
Anystorageofthesubstationwhichmaybenecessarypriorto
installationshouldbeinconditionswhicharedryandheated.
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.
Pleaseobserveinstructionscarefully
Toavoidinjurytopersonsanddamagetothedevice,itisabsolutely
necessarytoreadandobservetheseinstructionscarefully.
Warningofhighpressureandtemperature
Beawareoftheinstallation’spermissiblesystempressureand
temperature.
Themaximumtemperatureoftheflowmediuminthesubstationis
110°C.
Themaximumoperatingpressureofthesubstationis16bar.
Theriskofpersonsbeinginjuredandequipmentdamagedincreases
considerablyiftherecommendedpermissibleoperatingparameters
areexceeded.
Thesubstationinstallationmustbeequippedwithsafetyvalves,
however,alwaysinaccordancewithlocalregulations.
Warningofhotsurface
Thesubstationhasgothotsurfaces,whichcancauseskinburns.
Pleasebeextremelycautiousincloseproximitytothesubstation.
Powerfailurecanresultinthemotorvalvesbeingstuckinopen
position.Thesurfacesofthesubstationcangethot,whichcancause
skinburns.Theballvalvesondistrictheatingsupplyandreturnshould
beclosed.
Warningoftransportdamage
Beforesubstationinstallation,pleasemakesurethatthesubstation
hasnotbeendamagedduringtransport.
IMPORTANT-Tighteningofconnections
Duetovibrationsduringtransportallflangeconnections,screwjoints
andelectricalclampandscrewconnectionsmustbecheckedand
tightenedbeforewaterisaddedtothesystem.Afterwaterhasbeen
addedtothesystemandthesystemhasbeenputintooperation,
re-tightenALLconnections.
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4.0Mounting
4.1MountingtheCompactstation
Installationmustbeincompliancewithlocalstandardsand
regulations.
Districtheating(DH)-Inthefollowingsections,DHreferstothe
heatsourcewhichsuppliesthesubstations.Avarietyofenergy
sources,suchasoil,gasorsolarpower,couldbeusedasthe
primarysupplytoDanfosssubstations.Forthesakeofsimplicity,
DHcanbetakentomeantheprimarysupply.
Connections:
1.Districtheating(DH)supply
2.Districtheating(DH)return
3.Hotwatercirculation(HWC)
4.Heating(HE)supply
5.Heating(HE)return
6.Domestichotwater(DHW)
7.Domesticcoldwater(DCW)
Connectionsizes:
DH+HE+DHW+DCW:G1”(int.thread)
HWC:G¾”(int.thread)
Dimensions(mm):
Withinsulation:H1063xW905xD400
Weight(approx.):55kg
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.
Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.
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Removethefront.
Removeotherblocks.
Attachthemountingrailtothewall.
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Liftthestation.
Mountthestationonthemountingrail.
Attachthestationtothewallintheholesonthemountingplate.
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Installisolationvalvewithpressuregaugetotheleft—Heating
supply.
Installisolationvalvewithsafetyvalvetotheright—Heating
return.
Installthecirculationpumpwiththesinglecheckvalve.
MountblockAontheleft-handsideofthepump.AttachblockE
toblockA,andattachittothepipeabovethepumpbyclicking
itinplace.
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MountblockBontheright-handsideofthepump.
MountblockF.Theblockishingedandcanbedrawnaroundthe
valve.AttachtheblocktoblockBandE.
MountblockJandHaroundthevalveforthetankcontrol.
Mountthefrontcover.
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4.1.1InstallingtheCompactstation
Mounting:
Adequatespace
Pleaseallowadequatespacearoundthesubstationformounting
andmaintenancepurposes.
Orientation
Thestationmustbemountedsothatcomponents,keyholes
andlabelsareplacedcorrectly.Ifyouwishtomountthestation
differentlypleasecontactyoursupplier.
Drillings
Wheresubstationsaretobewall-mounted,drillingsareprovided
inthebackmountingplate.Floormountedunitshavesupport.
Labelling
Eachconnectiononthesubstationislabelled.
Beforeinstallation:
Cleanandrinse
Priortoinstallation,allsubstationpipesandconnectionsshouldbe
cleanedandrinsed.
Tightening
Duetovibrationduringtransport,allsubstationconnectionsmust
becheckedandtightenedbeforeinstallation.
Unusedconnections
Unusedconnectionsandshut-offvalvesmustbesealedwitha
plug.Shouldtheplugsrequireremoval,thismustonlybedoneby
anauthorizedservicetechnician.
Installation:
Strainer
Ifastrainerissuppliedwiththestationitmustbefittedaccording
toschematicdiagram.Pleasenotethatthestrainermaybe
suppliedloose.
Connections
Internalinstallationanddistrictheatingpipesconnectionsmustbe
madeusingthreaded,flangedorweldedconnections.
Keyholeformounting.
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4.2Start-up
Start-up,Indirectheating
Filling:
1:Firstfill
Whencarryingoutfirstfill,theheatexchangermustbeslowlyfilled
withwateruntilitreachesworkingpressure.
2:Pressuregauge
TheHEpressuregaugeindicatesthepressureoftheHEsystem.This
instructionmustbefollowedstrictly,toavoiddangeroussituations.
3:Supplyhose
AballvalvewithplugisinstalledintheHEreturnline.Tofillthe
system,theballvalvemustfirstbeclosed,theplugremovedand
asupplyhoseconnected.Onre-openingtheballvalve,system
fillcancommence.
4:Pre-pressure
Whenfillingthesystemwithwater,thepressuregaugeshouldbe
observedclosely.Theexpansionvesselissuppliedpre-pressurised
to0.5bar.Thepre-pressurerequiredateachsubstationwill
dependonsystemhead(thedistancebetweenthelowestand
highestpointinthesystem),forexample:
5:Fillingstop
Fillingmuststopwhenthepressuregaugeshowsapressure
approximately1-2barhigherthanthepre-pressuresetting.The
ballvalveisthenclosed,thehoseremovedandtheplugputback
in.
Start-up:
1:Pumpspeed
Setthepumptohighestspeedbeforestart-up.
2:Startpump
Startthepumpandheatthroughthesystem.
3:Openshut-offvalves
Theshut-offvalvesshouldthenbeopenedandtheunitobserved
asitentersservice.Visualcheckingshouldconfirmtemperatures,
pressures,acceptablethermalexpansionandabsenceofleakage.
Iftheheatexchangeroperatesinaccordancewithdesign,itcanbe
puttoregularuse.
4:Ventsystem
Switchoffthepumpandventtheinstallationaftertheradiators
havebeenwarmedup.
5:Adjustpumpspeed
Setthepumptothelowestspeedconsistentwithcomfortand
electricityconsumption.
Normallythechange-overswitchissetinthemidposition(default).
Howeverforsystemswithunderfloorheatingorsinglepipeloop
systems,itmaybenecessarytoturnthechange-overswitch
upwards.
Higherpumpspeedsareonlyusediftheheatingrequirement
increases.
Re-tightenconnections
Afterwaterhasbeenaddedtothesystemandthesystemhasbeen
putintooperation,re-tightenALLconnections.
Pump
Thepumpmustbeswitchedoffduringsystemfill.
Height(m)Pressure(bar)
0–50,5
5–101,0
10–151,5
15–202,0
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Underfloorheating:
Pumpstopfunction
Ifthesubstationisusedinconnectionwithunderfloorheating,the
circulationpumpmustbeconnectedtothepumpstopfunctionin
theunderfloorheatingcontroller.Thepumpmustbestoppedif
allunderfloorheatingcircuitsareclosed.
Warranty
Ifthisisnotpossible,thenflowmustbecontinuedthroughthe
by-pass.Failingthis,thepumpwillbeatriskofseizureandany
remainingwarrantywillbewithdrawn.
Summeroperation:
Switchoffpump
Insummerthecirculationpumpmustbeswitchedoffandthe
shut-offvalvetoHEsupplyclosed.
Runningpumpbi-weekly
Itisrecommendedtostartupthecirculationpump(for2minutes)
onceamonthduringsummer;theshut-offvalveoftheHEsupply
mustbeshut.
Electroniccontroller
Mostelectroniccontrollerswillstartupthepumpautomatically
(pleasenotemanufacturer´sinstructions).
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4.3Electricalconnections
Beforemakingelectricalconnections,pleasenotethe
following:
Safetynotes
Pleasereadtherelevantpartsofthesafetynotes.
230V
Thesubstationmustbeconnectedto230VACandearth.
Potentialbonding
Potentialbondingshouldbecarriedoutaccording
to60364-4-41:2007andIEC60364-5-54:2011.
Bondingpointonthemountingplatebelowrightcornermarked
withearthsymbol.
Disconnection
Thesubstationmustbeelectricallyconnectedsothatitcanbe
disconnectedforrepairs.
Outdoortemperaturesensor
Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.
Theoutdoorsensormustbeconnectedtothestationonthe
terminalblockundertheelectroniccontrol.
Authorizedelectrician
Electricalconnectionsmustbemadebyanauthorizedelectricianonly.
Localstandards
Electricalconnectionsmustbemadeinaccordancewithcurrent
regulationsandlocalstandards.
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5.0Design
5.1Design
Yoursubstationmightlookdifferentthanthesubstationshown.
Designdescription
AHeatexchanger,HE9Strainer27Actuator
BHeatexchanger,DHW10Circulatorpump292–waymotorizedvalve
FElectroniccontroller11HWCpump30Flowcontrollerw/intg.controlvalve
1Isolationvalve19Surfacesensor31Differentialpressurecontroller
2Singlecheckvalve20Filling/drainvalve48Airvent,manual
4Safetyvalve,HE26Pressuregauge
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5.2Schematicdiagram
5.2.1SchematicdiagramTermixCompact28MSVVX
Yoursubstationmightlookdifferentthantheschematicdiagramshown.
Schematicdescription
AHeatexchanger,HTG10Circulatorpump26Pressuregauge
BHeatexchangerDHW11HWCpump27Actuator
FElectroniccontroller16Outdoorsensor292–waymotorizedvalve
1Isolationvalve19Surfacesensor30Flowcontrollerw/intg.controlvalve
2Singlevalve20Filling/drainvalve31Differentialpressurecontroller
4Safetyvalve23Ballvalve40Immersionsensor
9Strainer24Deliveredloosewithunit48Airvent,manual
DHSupply:DistrictHeatingSupply
DHReturn:DistrictHeatingReturn
HESupply:HeatingSupply
HEReturn:HeatingReturn
DHW:Domestichotwater
HWC:Hotwatercirculation
DCW:Domesticcoldwater
5.2.2Technicalparameters
Nominalpressure:PN16
Max.DHsupplytemperature:110°C
Brazingmaterial(HEX):Copper
Heatexchangerstestpressure:30bar
Soundlevel:≤55dB
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6.0Controls
6.1Heatingcircuit
6.1.1Differentialpressurecontroller
Thedifferentialpressurecontrollersmoothsoutthefluctuationsin
pressurearrivingfromthedistrictheatingnetwork.Theoperating
pressureinthesubstationisthusheldsteady.
6.1.2Flowcontrollerwithintegratedcontrolvalve
Thecontrollerisaself-actingflowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.flowisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.
6.1.3Electric2–waymotorizedvalve
Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.
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6.1.4Electroniccontrol
Substationswithelectroniccontrolmustbesetinaccordancewith
manufacturer´sinstructions.
Wheretheroomtemperatureiscontrolledbyradiatorthermostats,
itisrecommendedthatthermostatsbesetforminimum
temperatureineachroom.
6.1.5Outsidetemperaturesensor
Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.
6.1.6CirculatorpumpUPM3
UPM3Pumpscanbecontrolledinconstantpressure,proportional
pressureorconstantspeedmodedefinedbythemeansofasmart
userinterface.
Thevariablespeedmodulatingmodesallowthepumptomatchits
performancetothesystemrequirements,helpingtoreducenoise
whenthermostaticvalvesareclosingdown.
EnergylabellingclassA
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6.1.7GrundfosUPM3AUTOinstructions
Controlmode
Eachpushonthebuttonswitchestothenextprogramsetting.Thechoiceofoperationmodedependsonthetypeofheatingsystem
andthepressurelossinthesystem.
Settings
Function:Recommendedfor:GreenGreenYellowYellowYellow
ProportionalpressureAutoadapt�
ConstantpressureAutoadapt�
Proportionalpressure1��
Proportionalpressure22-pipesystems���
Proportionalpressure3—MAX����
Constantpressure11-pipesystems��
Constantpressure2Underfloorheating���
Constantpressure3—MAX����
ConstantCurve1�
ConstantCurve2��
ConstantCurve3—MAX���
Alarmstatus
Function:Recommendedfor:RedGreenYellowYellowYellow
PowerSupplyfailure
Blocked��
Supplyvoltagelow��
Electricalerror��
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6.1.8HEpressuregauge
TheHEpressuregaugeindicatesthepressureoftheHEsystem.
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6.2Other
6.2.1Safetyvalve
Thepurposeofthesafetyvalveistoprotectthesubstationfrom
excessivepressure.
Theblow-offpipefromthesafetyvalvemustnotbeclosed.The
blow-offpipeoutletshouldbeplacedsothatitdischargesfreely
anditispossibletoobserveanydrippingfromthesafetyvalve.
Itisrecommendedtochecktheoperationofsafetyvalvesat
intervalsof6months.Thisisdonebyturningthevalveheadin
directionindicated.
6.2.2Strainer
Strainersshouldbecleanedregularlybyauthorizedpersonnel.The
frequencyofcleaningwoulddependonoperatingconditionsand
themanufacturer’sinstructions.
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6.3Maintenance
Thesubstationrequireslittlemonitoring,apartfromroutine
checks.Itisrecommendedtoreadtheenergymeteratregular
intervals,andtowritedownthemeterreadings.
RegularinspectionsofthesubstationaccordingtothisInstruction
arerecommended,whichshouldinclude:
Strainers
Cleaningofstrainers.
Meters
Checkingofalloperatingparameterssuchasmeterreadings.
Temperatures
Checkingofalltemperatures,suchasDHsupplytemperatureand
DHWtemperature.
Connections
Checkingallconnectionsforleakages.
Safetyvalves
Theoperationofthesafetyvalvesshouldbecheckedbyturning
thevalveheadintheindicateddirection.
Venting
Checkingthatthesystemisthoroughlyvented.
Inspectionsshouldbecarriedoutminimumeverytwoyears.
SparepartscanbeorderedfromDanfoss.Pleaseensurethatany
enquiryincludesthesubstationserialnumber.
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.
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