Danfoss Termix Novi Operating instructions

Brand: Danfoss

Model: Termix Novi

Type: Operating instructions

Danfoss Termix Novi is a cutting-edge instantaneous water heater designed to provide efficient and reliable hot water for your home. It features a compact design for wall-mounting, making it suitable for various spaces. The Termix Novi utilizes a heat exchanger to extract heat from the district heating system, ensuring high-performance hot water production. Its precise temperature control ensures a consistent and comfortable hot water supply, while the flow-compensated design maintains the desired temperature even with fluctuating flow rates.

Operatingguide

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

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

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.

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

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.

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

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.

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

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.

Tightening

Duetovibrationduringtransport,allsubstationconnectionsmust

becheckedandtightenedbeforeinstallation.

Unusedconnections

Unusedconnectionsandshut-offvalvesmustbesealedwitha

plug.Shouldtheplugsrequireremoval,thismustonlybedoneby

anauthorizedservicetechnician.

Installation:

Strainer

Ifastrainerissuppliedwiththestationitmustbettedaccording

toschematicdiagram.Pleasenotethatthestrainermaybe

suppliedloose.

Connections

Internalinstallationanddistrictheatingpipesconnectionsmustbe

madeusingthreaded,angedorweldedconnections.

Keyholeformounting.

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

5.0Design

5.1Design

Yoursubstationmightlookdifferentthanthesubstationshown.

Designdescription

Heatexchanger,DHW

Circulationconnection

Sieve

IHPTcontroller,DHW

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

5.2Schematicdiagram

DHW

DCW

Supply

Return

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

SchematicdescriptionwithGTU

Heatexchanger,DHW

Sieve

GTUPressureequalizer

IHPTcontroller

DHW

HWC

DCW

Supply

Return

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

Schematicdescriptionwithsafetyvalve

Heatexchanger,DHW

Safetyvalve

Sieve

Singlecheckvalve

Tobeorderedseparately

IHPTcontroller

Singlecheckvalveincl.circulationpipe

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

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

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

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*

Scale

DHWTemperatureSetting[°C]

661

455

352

248

144

043

*Startposition:Handleturnedfullyin(+)direction.

Thevaluesareintendedasaguide.

6.1.2Safetyvalve

Thepurposeofthesafetyvalveistoprotectthesubstationfrom

excessivepressure.

Theblow-offpipefromthesafetyvalvemustnotbeclosed.The

blow-offpipeoutletshouldbeplacedsothatitdischargesfreely

anditispossibletoobserveanydrippingfromthesafetyvalve.

Itisrecommendedtochecktheoperationofsafetyvalvesat

intervalsof6months.Thisisdonebyturningthevalveheadin

directionindicated.

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

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.

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

6.2Maintenance

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.

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

7.0Troubleshooting

7.1Troubleshootingingeneral

Intheeventofoperatingdisturbances,thefollowingbasicfeatures

shouldbecheckedbeforecarryingoutactualtroubleshooting:

•thesubstationisconnectedtoelectricity,

•thestrainerontheDHsupplypipeisclean,

•thesupplytemperatureoftheDHisatthenormallevel

(summer,atleast60°C-winter,atleast70°C),

•thedifferentialpressureisequaltoorhigherthanthenormal

(local)differentialpressureintheDHnetwork–ifindoubt,ask

theDHplantsupervisor,

•pressureonthesystem-checktheHEpressuregauge.

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby

qualiedandauthorizedpersonnelonly.

7.2TroubleshootingDHW

ProblemPossiblecauseSolution

Strainerinsupplyorreturnlineclogged.Cleanstrainer(s).

DHWcirculationpumpoutoforderorwith

toolowsetting.

Checkcirculationpump.

Defectiveorcloggednon-returnvalve.

Replace–clean.

Noelectricity.Check.

Wrongsettingofautomaticcontrols,ifany.Toadjustanelectroniccontrollerfor

DHW,pls.noteenclosedinstructionsfor

electroniccontroller.

Scalingoftheplateheatexchanger.

Replace–rinseout.

Defectivemotorizedvalve.Check(usemanualfunction)–replace.

Defectivetemperaturesensors.

Check–replace.

ToolittleornoDHW.

Defectivecontroller.

Check–replace.

DCWisbeingmixedwiththeDHW,e.g.in

adefectivethermostaticmixingvalve.

Check–replace. Hotwaterinsometapsbutnotinall.

Defectiveorcloggednon-returnvalveon

circulationvalve.

Replace–clean.

Taptemperaturetoohigh;DHWtapload

toohigh.

Thermostaticvalveadjustedtoatoohigh

level.

Check–set.

Scalingoftheplateheatexchanger.

Replace–rinseout. Temperaturedropduringtapping.

LargerDHWowthanthesubstationhas

beendesignedfor.

ReduceDHWow.

Thermostaticcontrolvalvedoesnotclose

TemperaturedifferencebetweenDH

supplyandDHWsetpointtoolow.

Lowerthesetpointtemperatureor

increasetheDHsupplytemperature.

Idletemperaturetoolow(forstations

equippedwithIHPT).

Setpointtoolow.Turnthermostatin(+)direction.

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

7.3Disposal

Disposal

Thisproductshouldbedismantledanditscomponents

sorted,ifpossible,invariousgroupsbeforerecycling

ordisposal.

Alwaysfollowthelocaldisposalregulations.

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

DEN-GT

VI.GE.N4.02/LUK38040

DanfossDistrictEnergy

OperatingguideTermixNovi

8.0Declaration

8.1Declarationofconformity

Category0withoutelectricalequipment

DanfossDistrictEnergy

VI.GE.N4.02/LUK38040

DEN-GT

OperatingguideTermixNovi

Danfoss Termix Novi Operating instructions

Danfoss Termix Novi Operating instructions

Danfoss Termix Novi Operating instructions

Related papers

Other documents