Danfoss Termix VMTD-Compact 28 Operating instructions

  • Hello! I am an AI chatbot trained to assist you with the Danfoss Termix VMTD-Compact 28 Operating instructions. I’ve already reviewed the document and can help you find the information you need or explain it in simple terms. Just ask your questions, and providing more details will help me assist you more effectively!
InstallationGuide
TermixVMTDCompact28
1.0TableofContents
1.0TableofContents.............................................1
2.0Functionaldescription......................................2
3.0Safetynotes.....................................................3
3.1SafetyNotesgeneral............................................3
4.0Mounting........................................................4
4.1Mounting...........................................................4
4.2Start-up..............................................................6
4.3Electricalconnections.............................................7
5.0Design.............................................................8
5.1Design...............................................................8
5.2Schematicdiagram................................................9
6.0Controls..........................................................10
6.1Heatingcircuit......................................................10
6.2DHWtemperaturecontrol........................................12
6.3Other.................................................................14
6.4Maintenance........................................................14
7.0Troubleshooting..............................................15
7.1Troubleshootingingeneral......................................15
7.2TroubleshootingDHW............................................15
7.3TroubleshootingHE...............................................16
7.4Disposal.............................................................17
8.0Declaration......................................................19
8.1Declarationofconformity........................................19
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
1
InstallationGuideTermixVMTDCompact28
2.0Functionaldescription
Districtheatingsubstationfordirectheatingand
instantaneousdomestichotwaterwiththermostaticor
electroniccontrols.Designedforwall-mounting.
Application
TheTermixVMTDCompact28isacompletesolutionwitha
built-inwaterheaterandaheatingcircuitwithmixingloop.The
substationistheperfectsolutionforapartmentbuildingswithup
to25apartments.
Districtheating(DH)
Thedistrictheatingcircuitisprefabricatedwithaowcontroller
withintegratedcontrolvalveaswellasstrainersandballvalves.
Furthermorethesubstationisdeliveredwithamixingloop,which
includespumpandnon-returnvalve.
Heating(HE)
Theheatingcircuitisdesignedfordirectconnection.Theow
controllerwithintegratedcontrolvalvesetstheoptimumoperation
conditionsforradiatorthermostatsinordertoenableindividual
temperaturecontrolineachroom.nThemixingloopcreatesa
suitabletemperaturelevelfortheheatingsystem.
Domestichotwater(DHW)
Thedomestichotwaterispreparedintheplateheatexchanger
andthetemperatureisregulatedwiththermostaticorelectronic
controls.Theefcientheatexchangeroffersexceptionallygood
heatextractionwithhighoutput.NoreadjustmentoftheDHW
temperatureisrequiredafterinstallationandinitialsettingofthe
controls.Thethermostaticcontrolvalveautomaticallyretainsthe
comforttemperatureofthehotwater,evenwhentheheating
systemisinreducedoperationduringsummerorifthedistrict
heatingplantchangesoperatingparametersbetweensummerand
winter.Thiseitherbyloweringorincreasingtheowtemperature
ofthedistrictheatingwaterand/ortheoperatingpressureinthe
network.
2
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
3.0Safetynotes
3.1SafetyNotesgeneral
Thefollowinginstructionsrefertothestandarddesignof
substation.Specialversionsofsubstationsareavailableon
request.
Thisoperatingmanualshouldbereadcarefullybeforeinstallation
andstart-upofthesubstation.Themanufactureracceptsno
liabilityfordamageorfaultsthatresultfromnon-compliancewith
theoperatingmanual.Pleasereadandfollowalltheinstructions
carefullytopreventaccidents,injuryanddamagetoproperty.
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Pleasecomplywiththeinstructionsissuedbythesystem
manufacturerorsystemoperator.
Corrosionprotection
Allpipesandcomponentsaremadeofstainlesssteelandbrass.
Themaximumchloridecompoundsoftheowmediumshouldnot
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-re,leaksorotherdangerous
circumstances-interruptallenergysourcestothestationif
possible,andseekexperthelp.
Incaseofdiscolouredorbad-smellingdomestichotwater,closeall
shut-offvalvesonthesubstation,informtheoperatingpersonnel
andcallforexperthelpimmediately.
Storage
Anystorageofthesubstationwhichmaybenecessarypriorto
installationshouldbeinconditionswhicharedryandheated.
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Pleaseobserveinstructionscarefully
Toavoidinjurytopersonsanddamagetothedevice,itisabsolutely
necessarytoreadandobservetheseinstructionscarefully.
Warningofhighpressureandtemperature
Beawareoftheinstallationspermissiblesystempressureand
temperature.
Themaximumtemperatureoftheowmediuminthesubstationis
120°C.
Themaximumoperatingpressureofthesubstationis10bar.PN16
versionsareavailableonenquiry.
Theriskofpersonsbeinginjuredandequipmentdamagedincreases
considerablyiftherecommendedpermissibleoperatingparameters
areexceeded.
Thesubstationinstallationmustbeequippedwithsafetyvalves,
however,alwaysinaccordancewithlocalregulations.
Warningofhotsurface
Thesubstationhasgothotsurfaces,whichcancauseskinburns.
Pleasebeextremelycautiousincloseproximitytothesubstation.
Powerfailurecanresultinthemotorvalvesbeingstuckinopen
position.Thesurfacesofthesubstationcangethot,whichcancause
skinburns.Theballvalvesondistrictheatingsupplyandreturnshould
beclosed.
Warningoftransportdamage
Beforesubstationinstallation,pleasemakesurethatthesubstation
hasnotbeendamagedduringtransport.
IMPORTANT-Tighteningofconnections
Duetovibrationsduringtransportallangeconnections,screwjoints
andelectricalclampandscrewconnectionsmustbecheckedand
tightenedbeforewaterisaddedtothesystem.Afterwaterhasbeen
addedtothesystemandthesystemhasbeenputintooperation,
re-tightenALLconnections.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
3
InstallationGuideTermixVMTDCompact28
4.0Mounting
4.1Mounting
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.Heating(HE)supply
4.Heating(HE)return
5.Domestichotwater(DHW)
6.Domesticcoldwater(DCW)
7.Hotwatercirculation(HWC)
Connectionsizes:
DH+HE:
G1”(int.thread)
DCW+DHW:
G1”(int.thread)
HWC:
G¾”(int.thread)
Dimensions(mm):
Withoutcover:
H940xW750xD440
Withcover:
H940xW800xD522
Weight(approx.):75kg
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.
4
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
4.1.1Installation
Mounting:
Adequatespace
Pleaseallowadequatespacearoundthesubstationformounting
andmaintenancepurposes.
Orientation
Thestationmustbemountedsothatcomponents,keyholes
andlabelsareplacedcorrectly.Ifyouwishtomountthestation
differentlypleasecontactyoursupplier.
Drillings
Wheresubstationsaretobewall-mounted,drillingsareprovided
inthebackmountingplate.Floormountedunitshavesupport.
Labelling
Eachconnectiononthesubstationislabelled.
Beforeinstallation:
Cleanandrinse
Priortoinstallation,allsubstationpipesandconnectionsshouldbe
cleanedandrinsed.
Thightening
Duetovibrationduringtransport,allsubstationconnectionsmust
becheckedandtightenedbeforeinstallation.
Unusedconnections
Unusedconnectionsandshut-offvalvesmustbesealedwitha
plug.Shouldtheplugsrequireremoval,thismustonlybedoneby
anauthorizedservicetechnician.
Installation:
Strainer
Ifastrainerissuppliedwiththestationitmustbettedaccording
toschematicdiagram.Pleasenotethatthestrainermaybe
suppliedloose.
Connections
Internalinstallationanddistrictheatingpipesconnectionsmustbe
madeusingthreaded,angedorweldedconnections.
Keyholeformounting.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
5
InstallationGuideTermixVMTDCompact28
4.2Start-up
Start-up,Heatingwithmixingloop
Start-up:
1:Pumpspeed
Setthepumptohighestspeedbeforestart-up.
2:Startpump
Startthepumpandheatthroughthesystem.
3:Openshut-offvalves
Theshut-offvalvesshouldthenbeopenedandtheunitobserved
asitentersservice.Visualcheckingshouldconrmtemperatures,
pressures,acceptablethermalexpansionandabsenceofleakage.
Ifthesystemoperatesinaccordancewithdesign,itcanbeput
toregularuse.
4:Ventsystem
Switchoffthepumpandventtheinstallationaftertheradiators
havebeenwarmedup.
5:Adjustpumpspeed
Setthepumptothelowestspeedconsistentwithcomfortand
electricityconsumption.
Normallythechange-overswitchissetinthemidposition(default).
Howeverforsystemswithunderoorheatingorsinglepipeloop
systems,itmaybenecessarytoturnthechange-overswitch
upwards.
Higherpumpspeedsareonlyusediftheheatingrequirement
increases.
Re-thightenconnections
Afterwaterhasbeenaddedtothesystemandthesystemhasbeen
putintooperation,re-tightenALLconnections.
Pump
Thepumpmustbeswitchedoffduringsystemll.
Underoorheating:
Pumpstopfunction
Ifthesubstationisusedinconnectionwithunderoorheating,the
circulationpumpmustbeconnectedtothepumpstopfunctionin
theunderoorheatingcontroller.Thepumpmustbestoppedif
allunderoorheatingcircuitsareclosed.
Warranty
Ifthisisnotpossible,thenowmustbecontinuedthroughthe
by-pass.Failingthis,thepumpwillbeatriskofseizureandany
remainingwarrantywillbewithdrawn.
Summeroperation:
Switchoffpump
Insummerthecirculationpumpmustbeswitchedoffandthe
shut-offvalvetoHEsupplyclosed.
Runningpumpbi-weekly
Itisrecommendedtostartupthecirculationpump(for2minutes)
onceamonthduringsummer;theshut-offvalveoftheHEsupply
mustbeshut.
Electroniccontroller
Mostelectroniccontrollerswillstartupthepumpautomatically
(pleasenotemanufacturer´sinstructions).
6
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
4.3Electricalconnections
Beforemakingelectricalconnections,pleasenotethe
following:
Safetynotes
Pleasereadtherelevantpartsofthesafetynotes.
230V
Thesubstationmustbeconnectedto230VACandearth.
Disconnection
Thesubstationmustbeelectricallyconnectedsothatitcanbe
disconnectedforrepairs.
Outdoortemperaturesensor
Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.
Theoutdoorsensormustbeconnectedtothestationonthe
terminalblockundertheelectroniccontrol.
Authorizedelectrician
Electricalconnectionsmustbemadebyanauthorizedelectricianonly.
Localstandards
Electricalconnectionsmustbemadeinaccordancewithcurrent
regulationsandlocalstandards.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
7
InstallationGuideTermixVMTDCompact28
5.0Design
5.1Design
Yoursubstationmightlookdifferentthanthesubstationshown.
Designdescription
B
Heatexchanger,DHW
11
Domestichotwaterpump
30
Flowcontrollerwithintegratedcontrolvalve
F
Electroniccontroller
25
Pressuregaugewithballvalve
48
Airvent,manual
2
Singlecheckvalve,HE
27AActuator,HE
10
Circulationpump,HE
27BActuator,DHW
8
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
5.2Schematicdiagram
DH
Supply
HE
Supply
DH
Return
HE
Return
DHW
DCW
HWC
Yoursubstationmightlookdifferentthantheschematicdiagramshown.
Schematicdescription
B
Heatexchanger,DHW
11
Domestichotwaterpump
27
Actuator
F
Electroniccontrollerheating
16
Outdoorsensor
30
Flowcontrollerwithintegratedcontrolvalve
1
Ballvalve
18
Thermometer
48
Airvent,manual
2
Singlecheckvalve
19
Surfacesensor
10
Circulationpump
25
Pressuregaugewithballvalve
5.2.1Technicalparameters
Technicalparameters
Nominalpressure:
PN16
Max.DHsupplytemperature:
120°C
Min.DCWstaticpressure:
0.5bar
Brazingmaterial(HEX):
Copper
Heatexchangerstestpressure:30bar
Soundlevel:55dB
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
9
InstallationGuideTermixVMTDCompact28
6.0Controls
6.1Heatingcircuit
6.1.1Differentialpressurecontroller
Thedifferentialpressurecontrollersmoothsouttheuctuationsin
pressurearrivingfromthedistrictheatingnetwork.Theoperating
pressureinthesubstationisthusheldsteady.
6.1.2AVTBcontroller(30–100°)
Thetemperaturesettingisasfollows:
1=35°C
2=55°C
3=75°C
4=95°C
5=100°C
Thevaluesareintendedasaguide.
10
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
6.1.3Electric2–waymotorizedvalve
Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.
6.1.4Flowcontrollerwithintegratedcontrolvalve
Thecontrollerisaself-actingowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.owisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.
6.1.5Electroniccontrol
Substationswithelectroniccontrolmustbesetinaccordancewith
manufacturer´sinstructions.
Wheretheroomtemperatureiscontrolledbyradiatorthermostats,
itisrecommendedthatthermostatsbesetforminimum
temperatureineachroom.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
11
InstallationGuideTermixVMTDCompact28
6.1.6Outdoortemperaturesensor(ESMT)
Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.
6.1.7Circulationpump
TheGrundfosMAGNArangeisdesignedforheating,district
heatinganddomestichotwatersupplyinbuildingsonanyscale.
TheMAGNAsarespeed-controlledpumpswithbuilt-inintelligence
thatletsthemanalyzecurrentconditionsandadjusttheir
performanceaccordingly.
EnergylabellingclassA
6.2DHWtemperaturecontrol
DHWtemperaturecontrol
TherearevarioustypesofDHWtemperaturecontrolusedin
Danfosssubstations.
DHWtemperatureshouldbeadjustedto45-50°C,asthisprovides
optimalutilisationofDHwater.AtDHWtemperaturesabove55°C,
thepossibilityoflimescaledepositsincreasessignicantly.
12
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
6.2.1AVTBcontroller(20–60°)
Thetemperaturesettingisasfollows:
1=20°C
2=35°C
3=50°C
4=60°C
5=70°C
Thevaluesareintendedasaguide.
TheAVTBoperatesatitsbestatDHsupplytemperaturesofupto
90°C.
Thermostaticcontrol
DHWtemperatureisadjustedasfollows:
Toincreasetemperature,turnthehandleonthethermostatic
controllertoselectahighernumber.
Todecreasetemperature,turnthehandleonthethermostatic
controllertoselectalowernumber.
6.2.2Flowcontrollerwithintegratedcontrolvalve
Thecontrollerisaself-actingowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.owisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.
6.2.3Electric2–waymotorizedvalve
Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
13
InstallationGuideTermixVMTDCompact28
6.3Other
6.3.1Strainer
Strainersshouldbecleanedregularlybyauthorizedpersonnel.The
frequencyofcleaningwoulddependonoperatingconditionsand
themanufacturer’sinstructions.
6.4Maintenance
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
qualiedandauthorizedpersonnelonly.
14
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
7.0Troubleshooting
7.1Troubleshootingingeneral
Intheeventofoperatingdisturbances,thefollowingbasicfeatures
shouldbecheckedbeforecarryingoutactualtroubleshooting:
thesubstationisconnectedtoelectricity,
thestrainerontheDHsupplypipeisclean,
thesupplytemperatureoftheDHisatthenormallevel
(summer,atleast60°C-winter,atleast70°C),
thedifferentialpressureisequaltoorhigherthanthenormal
(local)differentialpressureintheDHnetworkifindoubt,ask
theDHplantsupervisor,
pressureonthesystem-checktheHEpressuregauge.
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
7.2TroubleshootingDHW
ProblemPossiblecauseSolution
Strainerinsupplyorreturnlineclogged.Cleanstrainer(s).
DHWcirculationpumpoutoforderorwith
toolowsetting.
Checkcirculationpump.
Defectiveorcloggednon-returnvalve.
Replaceclean.
Noelectricity.Check.
Wrongsettingofautomaticcontrols,ifany.Toadjustanelectroniccontrollerfor
DHW,pls.noteenclosedinstructionsfor
electroniccontroller.
Scalingoftheplateheatexchanger.
Replacerinseout.
Defectivemotorizedvalve.Check(usemanualfunction)replace.
Defectivetemperaturesensors.
Checkreplace.
ToolittleornoDHW.
Defectivecontroller.
Checkreplace.
DCWisbeingmixedwiththeDHW,e.g.in
adefectivethermostaticmixingvalve.
Checkreplace.
Hotwaterinsometapsbutnotinall.
Defectiveorcloggednon-returnvalveon
circulationvalve.
Replaceclean.
Taptemperaturetoohigh;DHWtapload
toohigh.
Thermostaticvalveadjustedtoatoohigh
level.
Checkset.
Scalingoftheplateheatexchanger.
Replacerinseout.
Temperaturedropduringtapping.
LargerDHWowthanthesubstationhas
beendesignedfor.
ReduceDHWow.
Thermostaticcontrolvalvedoesnotclose
TemperaturedifferencebetweenDH
supplyandDHWsetpointtoolow.
Lowerthesetpointtemperatureor
increasetheDHsupplytemperature.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
15
InstallationGuideTermixVMTDCompact28
7.3TroubleshootingHE
ProblemPossiblecauseSolution
Toolittleornoheat.StrainercloggedinDHorHEcircuit
(radiatorcircuit).
Cleangate/strainer(s).
ThelterintheenergymeteronDHcircuit
clogged.
Cleanthelter(afterconsultingtheDH
plantoperator).
Defectiveorwronglyadjusteddifferential
pressurecontroller.
Checktheoperationofthedifferential
pressurecontrollercleanthevalveseatif
required.
Sensordefectiveorpossiblydirtinthe
valvehousing.
Checktheoperationofthethermostat
cleanthevalveseatifrequired.
Automaticcontrols,ifany,wronglysetor
defective-possiblypowerfailure.
Checkifthesettingofthecontroller
iscorrectseeseparateinstructions.
Checkthepowersupply.Temporary
settingofmotortomanual”controlsee
instructionsonautomaticcontrols.
Pumpoutofoperation.Checkifthepumpisreceivingpowerand
thatitturns.Checkifthereisairtrappedin
thepumphousingseepumpmanual.
Thepumpissetattoolowspeedof
rotation.
Setthepumpathigherspeedofrotation.
Pressuredropthepressuredropon
theradiatorcircuitshowslowerthan
recommendedoperatingpressure.
Fillwateronthesystemandcheckthe
functioningofthepressureexpansion
vesselifrequired.
Airpocketsinthesystem.Venttheinstallationthoroughly.
Limitingofthereturntemperature
adjustedtoolow.
Adjustaccordingtoinstructions.
Defectiveradiatorvalves.
Checkreplace.
Unevenheatdistributioninbuilding
becauseofincorrectlysetbalancingvalves,
orbecausetherearenobalancingvalves.
Adjust/installbalancingvalves.
Diameterofpipetosubstationtoosmallor
branchpipetoolong.
Checkpipedimensions.
Unevenheatdistribution.Airpocketsinthesystem.Venttheinstallationthoroughly.
DHsupplytemperaturetoohigh.
Wrongsettingofthermostatorof
automaticcontrols,ifany.
Adjustautomaticcontrols,see
instructionsforautomaticcontrols.
Defectivecontroller.Thecontrollerdoes
notreactasitshouldaccordingtothe
instructions.
Callautomaticcontrolsmanufactureror
replacetheregulator.
Defectivesensoronself-actingthermostat.
Replacethermostatorsensoronly.
DHsupplytemperaturetoolow.
Wrongsettingofautomaticcontrols,ifany.
Adjustautomaticcontrolsseeinstructions
forautomaticcontrols.
Defectivecontroller.Thecontrollerdoes
notreactasitshouldaccordingtothe
instructions.
Callinautomaticcontrolsmanufactureror
replacecontroller.
Defectivesensoronself-actingthermostat.
Replacethermostatorsensoronly.
Wrongplacement/ttingofoutdoor
temperaturesensor.
Adjustlocationofoutdoortemperature
sensor.
Strainerclogged.Cleangate/strainer.
16
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
ToohighDHreturntemperature.
Toosmallheatingsurface/toosmall
radiatorscomparedtothetotalheating
requirementofthebuilding.
Increasetotalheatingsurface.
Poorutilizationofexistingheatingsurface.
Defectivesensoronself-actingthermostat.
Makesuretheheatisdistributedevenly
acrossthefullheatingsurfaceopenall
radiatorsandkeeptheradiatorsinthe
systemfromheatingupatthebottom.It
isextremelyimportanttokeepthesupply
temperaturetotheradiatorsaslowas
possible,whilemaintainingareasonable
levelofcomfort.
Thesystemissinglepipeloop.
Thesystemshouldfeatureelectronic
controlsaswellasreturnsensors.
Pumppressuretoohigh.Adjustpumptoalowerlevel.
Airinsystem.
Ventthesystem.
Defectiveorincorrectlysetradiator
valve(s).Singlepipeloopsystemsrequire
specialone-piperadiatorvalves.
Checkset/replace.
Dirtinthemotorizedvalveorinthe
differentialpressurecontroller.
Checkcleanout.
Defectivemotorizedvalve,sensoror
automaticcontroller.
Checkreplace.
Electroniccontrollernotadjustedcorrectly.Adjustaccordingtoinstructions.
Noiseinsystem.
Pumppressuretoohigh.Adjustpumptoalowerlevel.
Heatloadtoohigh.
Defectivemotorizedvalve,sensoror
electroniccontroller.
Checkreplace.
7.4Disposal
Disposal
Thisproductshouldbedismantledanditscomponents
sorted,ifpossible,invariousgroupsbeforerecycling
ordisposal.
Alwaysfollowthelocaldisposalregulations.
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
17
InstallationGuideTermixVMTDCompact28
18
DEN-GT
VI.CW.Y2.02/LUK42260
DanfossDistrictEnergy
InstallationGuideTermixVMTDCompact28
8.0Declaration
8.1Declarationofconformity
Declarationofcompliance
We:
GeminaTermixA/S
MemberoftheDanfossGroup
Navervej15-17
DK-7451Sunds
doherebyonourownresponsibilitydeclarethatthefollowingproducts:
TermixSubstations
coveredbythisdeclarationisinconformitywiththefollowingdirective(s),
standard(s)orothernormativedocument(s),
providedthattheproductsareusedinaccordancewithourinstructions.
EUDirectives:
MachineryDirective2006/42/EEC
ENISO14121-1Safetyofmachinery-Riskassessment
EN60204-1Safetyofmachinery-Electricalequipmentofmachines
EMCDirective2004/108/EEC
EN61000-6-22007Electromagneticcompatibility
-Genericstandard:Immunityindustry
EN61000-6-32007Electromagneticcompatibility
-Genericstandard:Emissionforresidential,commercialandlightindustry
PEDDirective97/23/EEC
AllsubstationsthatfallsunderArticle3.3andcategory1shallnotbeCE-marked
accordingtothisdirective,howeverallessentialsafetyrequirementsfromthe
PEDDirective97/23/EECarefollowedtoensurehydraulicsafety
Thisdeclarationisimmediatelyannulled,iftheproductisinterferedwithinanyway,
whichinterfereswiththeabovementioneddirectivesandstandards,
withoutthewrittenconsentfromGeminaTermixA/S.
2010.01.05Sunds
Timeandplace
LarsGinnerup
Responsibleforquality
DanfossDistrictEnergy
VI.CW.Y2.02/LUK42260
DEN-GT
19
InstallationGuideTermixVMTDCompact28
ProducedbyDanfossA/S©01/2012
/