Danfoss Termix VVX Compact 28 - 40 Operating instructions

Type
Operating instructions

Danfoss Termix VVX Compact 28 - 40 is a complete solution for hot water and space heating with optimal safety, efficient energy transfer, service-friendly construction, and a compact design. Applicable for indirect heating and instantaneous domestic hot water. Features a prefabricated district heating circuit, a heating circuit with a plate heat exchanger and circulation pump, and a domestic hot water circuit with thermostatic or electronic controls.

Danfoss Termix VVX Compact 28 - 40 is a complete solution for hot water and space heating with optimal safety, efficient energy transfer, service-friendly construction, and a compact design. Applicable for indirect heating and instantaneous domestic hot water. Features a prefabricated district heating circuit, a heating circuit with a plate heat exchanger and circulation pump, and a domestic hot water circuit with thermostatic or electronic controls.

InstallationGuide
TermixVVXCompact28-40
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........................................11
6.3Other.................................................................12
6.4Maintenance........................................................14
7.0Troubleshooting..............................................15
7.1Troubleshootingingeneral......................................15
7.2TroubleshootingDHW............................................15
7.3TroubleshootingHE...............................................16
7.4Disposal.............................................................17
8.0Declaration......................................................18
8.1Declarationofconformity........................................18
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
1
InstallationGuideTermixVVXCompact28-40
2.0Functionaldescription
Districtheatingsubstationforindirectheatingand
instantaneousdomestichotwater.
Application
TheTermixVVXCompact28-40isacompletesolutionforhot
waterandspaceheatingwithoptimalsafety,efcientenergy
transfer,service-friendlyconstructionandacompactdesign.The
substationisapplicable,ifaheatexchangerisrequiredorona
conversiontodistrictheating,wheretheexistingequipmentis
unsuitablefordirectconnection.
Districtheating(DH)
Thedistrictheatingcircuitisprefabricatedwithaowcontroller
withintegratedcontrolvalveaswellasthermometersandball
valves.
Heating(HE)
Theheatingcircuitconsistsofaplateheatexchanger,safetyvalve,
manometer,thermometers,ballvalves,drainvalve,airvalveand
circulationpumpandcanbecontrolledthermostaticallyorby
anelectroniccontrollerwithanoutdoortemperaturesensor.
Dependingontheapplication,differentheatexchangerscanbe
dimensioned.
Domestichotwater(DHW)
Thedomestichotwaterispreparedintheheatexchangerand
thetemperatureisregulatedwiththermostaticorelectronic
controls.Theefcientheatexchangeroffersexceptionallygood
heatextractionwithhighoutput.NoreadjustmentoftheDHW
temperatureisrequiredafterinstallationandinitialsettingofthe
controls.Thethermostaticcontrolvalveautomaticallyretainsthe
comforttemperatureofthehotwater,evenwhentheheating
systemisinreducedoperationduringsummerorifthedistrict
heatingplantchangesoperatingparametersbetweensummerand
winter,eitherbyloweringorincreasingtheowtemperatureofthe
districtheatingwaterand/ortheoperatingpressureinthenetwork.
2
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
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.GP .G2.02/LUK43460
DEN-GT
3
InstallationGuideTermixVVXCompact28-40
4.0Mounting
4.1Mounting
Installationmustbeincompliancewithlocalstandardsand
regulations.
Districtheating(DH)-Inthefollowingsections,DHreferstothe
heatsourcewhichsuppliesthesubstations.Avarietyofenergy
sources,suchasoil,gasorsolarpower,couldbeusedasthe
primarysupplytoDanfosssubstations.Forthesakeofsimplicity,
DHcanbetakentomeantheprimarysupply.
Connections:
1.Heating(HE)supply
2.Heating(HE)return
3.Districtheating(DH)supply
4.Districtheating(DH)return
5.Domestichotwater(DHW)
6.Domesticcoldwater(DCW)
7.Hotwatercirculation(HCW)
Dimensions(mm):H1011xW1856xD423
Weight(approx.):80kg
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.
4
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
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.
Mountingframe.
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
5
InstallationGuideTermixVVXCompact28-40
4.2Start-up
Start-up,Indirectheating
Filling:
1:Firstll
Whencarryingoutrstll,theheatexchangermustbeslowlylled
withwateruntilitreachesworkingpressure.
2:Pressuregauge
TheHEpressuregaugeindicatesthepressureoftheHEsystem.This
instructionmustbefollowedstrictly,toavoiddangeroussituations.
3:Supplyhose
AballvalvewithplugisinstalledintheHEreturnline.Tollthe
system,theballvalvemustrstbeclosed,theplugremovedand
asupplyhoseconnected.Onre-openingtheballvalve,system
llcancommence.
4:Pre-pressure
Whenllingthesystemwithwater,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.Visualcheckingshouldconrmtemperatures,
pressures,acceptablethermalexpansionandabsenceofleakage.
Iftheheatexchangeroperatesinaccordancewithdesign,itcanbe
puttoregularuse.
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.
Height(m)Pressure(bar)
050,5
5101,0
1015
1,5
15202,0
6
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
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).
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.GP .G2.02/LUK43460
DEN-GT
7
InstallationGuideTermixVVXCompact28-40
5.0Design
5.1Design
Yoursubstationmightlookdifferentthanthesubstationshown.
Designdescription
A
Heatexchanger,HE
10
Circulationpump
27AActuator,HE
B
Heatexchanger,DHW
11
Domestichotwaterpump
27BActuator,DHW
F
Electroniccontroller
20
Filling/drainvalve
30
Flowcontrollerwithintegratedcontrolvalve
2
Singlecheckvalve
25
Pressuregaugewithballvalve
48
Airvent,manual
4
Safetyvalve
26
Pressuregauge
8
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
5.2Schematicdiagram
DH
Supply
HE
Supply
DH
Return
HE
Return
DHW
DCW
HWC
Yoursubstationmightlookdifferentthantheschematicdiagramshown.
Schematicdescription
A
Heatexchanger,HE
10
Circulationpump
25
Pressuregaugewithballvalve
B
Heatexchanger,DHW
11
Domestichotwaterpump
26
Pressuregauge
F
Electroniccontroller
16
Outdoorsensor
27
Actuator
1
Ballvalve
18
Thermometer
30
Flowcontrollerwithintegratedcontrolvalve
2
Singlecheckvalve
19
Surfacesensor
40
Immersionsensor
4
Safetyvalve
20
Filling/drainvalve
48
Airvent,manual
9
Strainer
24
Deliveredloosewithunit
DHW:DomesticHotWater
DCW:
DomesticColdWater
HWC:
HotWaterCirculation
DHSupply:DistrictHeatingSupply
DHReturn:DistrictHeatingReturn
HESupply:HeatingSupply
HEReturn:HeatingReturn
5.2.1Technicalparameters
Technicalparameters
Nominalpressure:
PN16
Max.DHsupplytemperature:
120°C
Min.DCWstaticpressure:
0.5bar
Brazingmaterial(HEX):
Copper
Heatexchangerstestpressure:30bar
Soundlevel:55dB
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
9
InstallationGuideTermixVVXCompact28-40
6.0Controls
6.1Heatingcircuit
6.1.1Flowcontrollerwithintegratedcontrolvalve
Thecontrollerisaself-actingowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.owisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.
6.1.2Electric2–waymotorizedvalve
Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.
6.1.3Electroniccontrol
Substationswithelectroniccontrolmustbesetinaccordancewith
manufacturer´sinstructions.
Wheretheroomtemperatureiscontrolledbyradiatorthermostats,
itisrecommendedthatthermostatsbesetforminimum
temperatureineachroom.
10
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
6.1.4Outdoortemperaturesensor(ESMT)
Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.
6.1.5Circulationpump
TheGrundfosMAGNArangeisdesignedforheating,district
heatinganddomestichotwatersupplyinbuildingsonanyscale.
TheMAGNAsarespeed-controlledpumpswithbuilt-inintelligence
thatletsthemanalyzecurrentconditionsandadjusttheir
performanceaccordingly.
EnergylabellingclassA
6.1.6HEpressuregauge
TheHEpressuregaugeindicatesthepressureoftheHEsystem.
6.2DHWtemperaturecontrol
DHWtemperaturecontrol
TherearevarioustypesofDHWtemperaturecontrolusedin
Danfosssubstations.
DHWtemperatureshouldbeadjustedto45-50°C,asthisprovides
optimalutilisationofDHwater.AtDHWtemperaturesabove55°C,
thepossibilityoflimescaledepositsincreasessignicantly.
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
11
InstallationGuideTermixVVXCompact28-40
6.2.1Flowcontrollerwithintegratedcontrolvalve
Thecontrollerisaself-actingowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.owisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.
6.2.2Electric2–waymotorizedvalve
Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.
6.3Other
6.3.1Safetyvalve
Thepurposeofthesafetyvalveistoprotectthesubstationfrom
excessivepressure.
Theblow-offpipefromthesafetyvalvemustnotbeclosed.The
blow-offpipeoutletshouldbeplacedsothatitdischargesfreely
anditispossibletoobserveanydrippingfromthesafetyvalve.
Itisrecommendedtochecktheoperationofsafetyvalvesat
intervalsof6months.Thisisdonebyturningthevalveheadin
directionindicated.
12
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
6.3.2Strainer
Strainersshouldbecleanedregularlybyauthorizedpersonnel.The
frequencyofcleaningwoulddependonoperatingconditionsand
themanufacturer’sinstructions.
6.3.3Fittingpiece
Thesubstationisequippedwithattingpieceforenergymeter.
Assemblyofenergymeters:
1:Closeballvalves
ClosetheballvalvesonDHSupplyandDHReturn,ifthereiswater
onthesystem.
2:Loosennuts
Loosenthenutsonthettingpiece.
3:Removettingpiece
Removethettingpieceandreplaceitwiththeenergymeter.Do
notforgetthegaskets.
4:Tightenconnections
Aftermountingoftheenergymeterremembertocheckand
tightenallthreadedconnections.
Sensorpocket,energymeter
Thesensorsoftheenergymeterismountedinthesensorpockets.
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
13
InstallationGuideTermixVVXCompact28-40
6.3.4Domestichotwaterpump
Important!
Itisnecessarytomountadomestichotwatercirculationpumpon
thewaterheatertoavoidregulationproblems.
Thecirculationpumpcannotbeswitchedoff,sincethiswillresult
inregulationproblems.(noowatthesensor).
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.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
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.GP .G2.02/LUK43460
DEN-GT
15
InstallationGuideTermixVVXCompact28-40
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.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
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.GP .G2.02/LUK43460
DEN-GT
17
InstallationGuideTermixVVXCompact28-40
8.0Declaration
8.1Declarationofconformity
8.1.1Substationlabel
Normallythebelowmentioneddeclarationofconformityapplies:
"Substations-Category0withelectricalequipment".
Unlessttedwithayellowlabel(PEDKAT.1)onthesubstationlabel
thenthefollowingdeclarationofconformityapplies:"Substations-
Category1withelectricalequipment".
PED
KAT.
1
8.1.2Category0withelectricalequipment
ECDeclarationofConformity
GeminaTermixA/S
MemberoftheDanfossGroup
Navervej15-17
DK-7451Sunds
Declaresonoursoleresponsibilitythatthebelowproducts:
SubstationsCategory0withelectricalequipment,
coveredbythisdeclarationareinconformitywiththefollowingdirectives,standardsandothernormative
documents,providedthattheyareusedaccordingtoourinstructions.
MachineryDirective2006/42/EC
DS/EN60204-1/A1:2009.Safetyofmachinery
Part1GeneralRequirements.
DS/EN12100:2011.SafetyofmachineryRisk
assessment.
LVDLowVoltageDirective2006/95/EC
DS/EN60204-1/A1:2009.Safetyofmachinery
Part1GeneralRequirements.
EMCDirective2004/108/EC
DS/EN61000-6-2/Corr.:2005.Electromagnetic
compatibilityGenericstandard:Immunity
industry.
DS/EN61000-6-3:2007.Electromagnetic
compatibilityGenericstandard:Emissionfor
residential,commercial&lightindustry.
Sunds2014.01.31
PlaceanddateofissueClausGjøderumMortensen
Quality&EnvironmentManager
18
DEN-GT
VI.GP .G2.02/LUK43460
DanfossDistrictEnergy
InstallationGuideTermixVVXCompact28-40
8.1.3Category1withelectricalequipment
ECDeclarationofConformity
GeminaTermixA/S
MemberoftheDanfossGroup
Navervej15-17
DK-7451Sunds
Declaresonoursoleresponsibilitythatthebelowproducts:
SubstationsCategory1withelectricalequipment,
coveredbythisdeclarationareinconformitywiththefollowingdirectives,standardsandothernormative
documents,providedthattheyareusedaccordingtoourinstructions.
MachineryDirective2006/42/EC
DS/EN60204-1/A1:2009.Safetyofmachinery
Part1GeneralRequirements.
DS/EN12100:2011.SafetyofmachineryRisk
assessment.
LVDLowVoltageDirective2006/95/EC
DS/EN60204-1/A1:2009.Safetyofmachinery
Part1GeneralRequirements.
PressureEquipmentDirective97/23/EC
EMCDirective2004/108/EC
DS/EN61000-6-2/Corr.:2005.Electromagnetic
compatibilityGenericstandard:Immunity
industry.
DS/EN61000-6-3:2007.Electromagnetic
compatibilityGenericstandard:Emissionfor
residential,commercial&lightindustry.
Sunds2014.01.31
PlaceanddateofissueClausGjøderumMortensen
Quality&EnvironmentManager
DanfossDistrictEnergy
VI.GP .G2.02/LUK43460
DEN-GT
19
InstallationGuideTermixVVXCompact28-40
ProducedbyDanfossA/S©01/2014
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20

Danfoss Termix VVX Compact 28 - 40 Operating instructions

Type
Operating instructions

Danfoss Termix VVX Compact 28 - 40 is a complete solution for hot water and space heating with optimal safety, efficient energy transfer, service-friendly construction, and a compact design. Applicable for indirect heating and instantaneous domestic hot water. Features a prefabricated district heating circuit, a heating circuit with a plate heat exchanger and circulation pump, and a domestic hot water circuit with thermostatic or electronic controls.

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI