Danfoss Termix Novi User manual

InstallationGuide
TermixNovi
1.0TableofContents
1.0TableofContents.............................................1
2.0Functionaldescription......................................2
3.0Safetynotes.....................................................3
3.1SafetyNotes–general............................................3
4.0Mounting........................................................4
4.1Mounting...........................................................4
5.0Design.............................................................6
5.1Design...............................................................6
5.2Schematicdiagram................................................7
6.0Controls..........................................................9
6.1DHWtemperaturecontrol........................................9
6.2Maintenance........................................................11
7.0Troubleshooting..............................................12
7.1Troubleshootingingeneral......................................12
7.2TroubleshootingDHW............................................12
7.3Disposal.............................................................13
8.0Declaration......................................................15
8.1Declarationofconformity........................................15
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InstallationGuideTermixNovi
2.0Functionaldescription
Instantaneouswaterheaterwithheatexchangerand
owcompensatedtemperaturecontroller.Designedfor
wall-mounting.
Application
TheTermixWaterheaterisaninstantaneouswaterheaterfeaturing
superbheatextractionandhighperformance.TheTermixWater
heaterissuitableforats,single-familyhousesaswellasforsmall
apartmentbuildings.Thewaterheaterisavailableintwosizes,
eitherfor1apartment,orupto4apartments.TheTermixWater
heaterisapplicablefordecentralizedheatingsystems.Theheat
exchangerintheTermixWaterheatercoolsthedistrictheating
waterveryefciently,therebycreatingaverygoodoperation
economy.
Domestichotwater(DHW)
Thedomestichotwaterispreparedintheheatexchangerandthe
temperatureisregulatedbyaowcontrollerwithaintegrated
differentialpressurecontroller.
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InstallationGuideTermixNovi
3.0Safetynotes
3.1SafetyNotes–general
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
Beawareoftheinstallation’spermissiblesystempressureand
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.
DanfossDistrictEnergyVI.GE.N3.02/LUK38040DEN-GT3

InstallationGuideTermixNovi
4.0Mounting
4.1Mounting
Installationmustbeincompliancewithlocalstandardsand
regulations.
Districtheating(DH)-Inthefollowingsections,DHreferstothe
heatsourcewhichsuppliesthesubstations.Avarietyofenergy
sources,suchasoil,gasorsolarpower,couldbeusedasthe
primarysupplytoDanfosssubstations.Forthesakeofsimplicity,
DHcanbetakentomeantheprimarysupply.
Connections:
1.Domesticcoldwater(DCW)
2.Domestichotwater(DHW)
3.Districtheating(DH)supply
4.Districtheating(DH)return
Connectionsizes:
DH+DCW+DHW:G¾”(ext.thread)
Dimensions(mm):
Type1+2withinsulation:
H432xW300xD155
Type1+2withcover:
H442xW315xD155
Weightincl.cover:7–9kg(incl.packing)
Cover:Greyfull-insulation
Authorizedpersonnelonly
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.
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InstallationGuideTermixNovi
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.
DanfossDistrictEnergyVI.GE.N3.02/LUK38040DEN-GT5

InstallationGuideTermixNovi
5.0Design
5.1Design
Yoursubstationmightlookdifferentthanthesubstationshown.
Designdescription
BHeatexchanger,DHW
NCirculationconnection
63Sieve
74IHPTcontroller,DHW
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InstallationGuideTermixNovi
5.2Schematicdiagram
DHW
DCW
DH
Supply
DH
Return
Yoursubstationmightlookdifferentthantheschematicdiagramshown.
SchematicdescriptionwithGTU
BHeatexchanger,DHW63Sieve
62GTUPressureequalizer74IHPTcontroller
DHW
HWC
DCW
DH
Supply
DH
Return
Yoursubstationmightlookdifferentthantheschematicdiagramshown.
Schematicdescriptionwithsafetyvalve
BHeatexchanger,DHW4Safetyvalve63Sieve
2Singlecheckvalve21Tobeorderedseparately74IHPTcontroller
2CSinglecheckvalveincl.circulationpipe
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InstallationGuideTermixNovi
DHW:DomesticHotWater
DCW:DomesticColdWater
HWC:HotWaterCirculation
DHSupply:DistrictHeatingSupply
DHReturn:DistrictHeatingReturn
5.2.1Technicalparameters
Technicalparameters
Nominalpressure:PN16
Max.DHsupplytemperature:120°C
Min.DCWstaticpressure:1.0bar
Brazingmaterial(HEX):Copper
Heatexchangerstestpressure:30bar
Soundlevel:≤55dB
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InstallationGuideTermixNovi
6.0Controls
6.1DHWtemperaturecontrol
DHWtemperaturecontrol
TherearevarioustypesofDHWtemperaturecontrolusedin
Danfosssubstations.
DHWtemperatureshouldbeadjustedto45-50°C,asthisprovides
optimalutilisationofDHwater.AtDHWtemperaturesabove55°C,
thepossibilityoflimescaledepositsincreasessignicantly.
6.1.1IHPT90controller(45–65°)
IHPTisaself-actingow-compensatedtemperaturecontrollerwith
integrateddifferentialpressurecontroller.
TheIHPToperatesatitsbestatDHsupplytemperaturesofupto
100°C.
Byturningthehandlefortemperaturesettingin(+)direction
thesettingisincreased,byturningitin(-)directionthesettingis
decreased.
Turns*DHWTemperatureSetting[°C]
064
161
258
355
452
548
644
743
*Startposition:Handleturnedfullyin(+)direction.
Thevaluesareintendedasaguide.
6.1.2Safetyvalve
Thepurposeofthesafetyvalveistoprotectthesubstationfrom
excessivepressure.
Theblow-offpipefromthesafetyvalvemustnotbeclosed.The
blow-offpipeoutletshouldbeplacedsothatitdischargesfreely
anditispossibletoobserveanydrippingfromthesafetyvalve.
Itisrecommendedtochecktheoperationofsafetyvalvesat
intervalsof6months.Thisisdonebyturningthevalveheadin
directionindicated.
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InstallationGuideTermixNovi
6.1.3Strainer
Strainersshouldbecleanedregularlybyauthorizedpersonnel.The
frequencyofcleaningwoulddependonoperatingconditionsand
themanufacturer’sinstructions.
6.1.4GTUPressureEqualizer
TheGTUPressureEqualizerabsorbstheexpansiononthe
secondarysideoftheTermixwaterheatersandcanbeusedasa
substitutetothesafetyvalve.
Furthermorethepressureequalizerabsorbsapossibleincreasein
pressure,soadischargeoutletisomitted.
TheGTUPressureEqualizermaynotbeappliedinsystemswithhot
watercirculation.
6.1.5Circulationpipe
Thecirculationpipesetismounteddirectlyonthecontroller.
Thesetincludescirculationpipe,singlecheckvalveandtting.
Whenmountingthehotwatercirculationdirectlyonthecontroller
thehotwatercirculationtemperaturewillbeequaltotheidle
temperature.Theidletemperatureisafewdegreeslowerthanthe
setdomestichotwatertemperature.
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