Danfoss Termix BL Operating instructions

Brand: Danfoss

Model: Termix BL

Type: Operating instructions

Danfoss Termix BL

Instantaneous water heater with heat exchanger and automatic controls. Designed for large apartment houses, sports arenas, and schools, where large amounts of hot water are needed. Available in 7 different sizes with an output from 70-222 kW and supplied with insulated plate heat exchangers.

Features:

Suitable for charging systems with high momentary demands for hot water
Automatic controls for regulation of charging temperature
Pressure control to avoid cyclic variations in differential pressure
Standard connections for domestic hot water (DHW) circulation including circulation pump and non-return valve

Danfoss Termix BL

Features:

Suitable for charging systems with high momentary demands for hot water
Automatic controls for regulation of charging temperature
Pressure control to avoid cyclic variations in differential pressure
Standard connections for domestic hot water (DHW) circulation including circulation pump and non-return valve

OperatingGuide

TermixBL

1.0TableofContents

1.0TableofContents.............................................1

........................................................................2

2.0Functionaldescription......................................3

3.0Safetynotes.....................................................4

3.1SafetyNotes–general............................................4

4.0Mounting........................................................5

4.1Mounting...........................................................5

4.2Electricalconnections.............................................7

5.0Design.............................................................8

5.1Design...............................................................8

5.2Schematicdiagram................................................9

5.3Design...............................................................10

5.4Schematicdiagram................................................11

6.0Controls..........................................................12

6.1DHWtemperaturecontrol........................................12

6.2Other.................................................................13

6.3Maintenance........................................................14

7.0Troubleshooting..............................................15

7.1Troubleshootingingeneral......................................15

7.2TroubleshootingDHW............................................15

7.3Disposal.............................................................16

8.0Declaration......................................................18

8.1Declarationofconformity........................................18

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OperatingGuideTermixBL

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VI.EH.D4.02/LUK41570

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OperatingGuideTermixBL

2.0Functionaldescription

Instantaneouswaterheaterwithheatexchangerand

automaticcontrols.Designedforwall-mounting.

Application

TheTermixBLisawaterheaterwithautomaticcontrolsprepared

forachargingsystem.TheTermixBLissuitableforlargeapartment

houses,sportsarenasandschools,wherelargeamountsofhot

waterareneeded.Thehotwatersystemsareavailablein7different

sizeswithanoutputfrom70-222kW.TheTermixBLunitissupplied

withPUinsulatedplateheatexchangers.

Domestichotwater(DHW)

TheTermixBLisavailableforchargingsystemswithlarge

momentarydemandsforhotwaterorininstallationswithrelatively

lowsupplycapacity.TheTermixBLchargingsystemisdelivered

withDanfossautomaticcontrolsforregulationofthecharging

temperatureandthetemperatureinthehotwaterbuffertank.The

controlvalvewithintegratedpressurecontrolhelpstoavoidcyclic

variationsofthedifferentialpressureinthedistrictheatingsupply.

Domestichotwatercirculation

TheTermixBLsubstationissuppliedwithconnectionsforDHW

circulationincludingcirculationpumpandanon-returnvalveas

astandard.

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OperatingGuideTermixBL

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.

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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.Hotwatercirculation(HWC)

4.Domestichotwater(DHW)

5.Domesticcoldwater(DCW)

Connectionsizes:

DH+DCW+DHW:

G1”(int.thread)

HWC:

G¾”(int.thread)

Dimensions(mm):

Type2-5withoutcover:

H660xW510xD240

Type2-5withcover:

H800xW540xD360

Type6-8withoutcover:

H920xW720xD385

Type6-8withcover:

H920xW800xD450

Weight(approx.):20–40kg

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby

qualiedandauthorizedpersonnelonly.

Type2–5

Type6–8

Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote

themarkingsonthestation.

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OperatingGuideTermixBL

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.

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4.2Electricalconnections

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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OperatingGuideTermixBL

5.0Design

5.1Design

Yoursubstationmightlookdifferentthanthesubstationshown.

Designdescription

Heatexchanger,DHW

Electroniccontroller,DHW

Singlecheckvalve

Domestichotwaterpump

Actuator

Flowcontrolwithcontrolvalve

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5.2Schematicdiagram

Schematicdiagramtype2-5(example)

DHW

Supply

Return

DCW

HWC

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

Schematicdescription

Heatexchanger,DHW

Safetyvalve

Actuator

Hotwatertank

Domestichotwaterpump

Flowcontrolwithcontrolvalve

Electroniccontroller,DHW

Chargingpump

Balancingvalve

Borderofdelivery

Thermometer

Immersionsensor

Ballvalve

Surfacesensor

Ballvalveclosed

Singlecheckvalve

Deliveredloosewithunit

Immersionsensor

DHW:DomesticHotWater

DCW:

DomesticColdWater

HWC:

HotWaterCirculation

DHSupply:DistrictHeatingSupply

DHReturn:DistrictHeatingReturn

5.2.1Technicalparameters

Technicalparameters

Nominalpressure:

PN16

Max.DHsupplytemperature:

120°C

Min.DCWstaticpressure:

0.5bar

Brazingmaterial(HEX):

Copper

Heatexchangerstestpressure:30bar

Soundlevel:≤55dB

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5.3Design

Yoursubstationmightlookdifferentthanthesubstationshown.

Designdescription

Heatexchanger,DHW

Chargingpump

Electroniccontroller,DHW

Actuator

Singlecheckvalve

Flowcontrolwithcontrolvalve

Domestichotwaterpump

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5.4Schematicdiagram

Schematicdiagramtype6-8(example)

DHW

Supply

Return

DCW

HWC

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

Schematicdescription

Heatexchanger,DHW

Safetyvalve

Flowcontrolwithcontrolvalve

Hotwatertank

Domestichotwaterpump

Balancingvalve

Electroniccontroller,DHW

Chargingpump

Immersionsensor

Borderofdelivery

Thermometer

Ballvalveclosed

Ballvalve

Surfacesensor

Immersionsensor

Singlecheckvalve

Actuator

DHW:DomesticHotWater

DCW:

DomesticColdWater

HWC:

HotWaterCirculation

DHSupply:DistrictHeatingSupply

DHReturn:DistrictHeatingReturn

5.4.1Technicalparameters

Technicalparameters

Nominalpressure:

PN16

Max.DHsupplytemperature:

120°C

Min.DCWstaticpressure:

0.5bar

Brazingmaterial(HEX):

Copper

Heatexchangerstestpressure:30bar

Soundlevel:≤55dB

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OperatingGuideTermixBL

6.0Controls

6.1DHWtemperaturecontrol

DHWtemperaturecontrol

TherearevarioustypesofDHWtemperaturecontrolusedin

Danfosssubstations.

DHWtemperatureshouldbeadjustedto45-50°C,asthisprovides

optimalutilisationofDHwater.AtDHWtemperaturesabove55°C,

thepossibilityoflimescaledepositsincreasessignicantly.

Twovalvesincascade

Iftwothermostaticcontrolvalvesaremountedparallelincascade,

itisimportanttoadjustthevalvesaccordingtothefollowing:The

smallvalveisforcontrollingsmalltappingowsandthelargevalve

isforcontrollinglargetappingows.

1.Thelargevalveisclosedcompletely(thehandleisturnedall

thewaytothetop).

2.Onetapisopened.

3.Thesmallvalveissetatthedesiredtemperature(50°C).Theset

pointismarkedandthevalveisclosedcompletely.

4.Severaltapsareopenedandthelargevalveisset3-5°Clower

thanthesmallvalve.

5.Thehandleofthesmallvalveisturnedbacktothemarked

point.

Pleasenote

Itisimportantthatthesmallvalveisset3-5°Chigherthanthe

largevalve;otherwiseitisnotpossibletocontrolthetemperature

ofsmalltappingowscorrectly.

6.1.1Electroniccontrol

Substationswithelectroniccontrolmustbesetinaccordancewith

manufacturer´sinstructions.

Wheretheroomtemperatureiscontrolledbyradiatorthermostats,

itisrecommendedthatthermostatsbesetforminimum

temperatureineachroom.

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6.1.2Electric2–waymotorizedvalve

Actuatorswithorwithoutsafetyfunctionareavailablefor3-point

controls.Spring-returnactuatorscanbeusedtoprovidesafety

shut-offintheeventofpowerfailure.

6.2Other

6.2.1Safetyvalve

Thepurposeofthesafetyvalveistoprotectthesubstationfrom

excessivepressure.

Theblow-offpipefromthesafetyvalvemustnotbeclosed.The

blow-offpipeoutletshouldbeplacedsothatitdischargesfreely

anditispossibletoobserveanydrippingfromthesafetyvalve.

Itisrecommendedtochecktheoperationofsafetyvalvesat

intervalsof6months.Thisisdonebyturningthevalveheadin

directionindicated.

6.2.2Domestichotwaterpump

Important!

Itisnecessarytomountadomestichotwatercirculationpumpon

thewaterheatertoavoidregulationproblems.

Thecirculationpumpcannotbeswitchedoff,sincethiswillresult

inregulationproblems.(noowatthesensor).

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OperatingGuideTermixBL

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

qualiedandauthorizedpersonnelonly.

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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.

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7.3Disposal

Disposal

Thisproductshouldbedismantledanditscomponents

sorted,ifpossible,invariousgroupsbeforerecycling

ordisposal.

Alwaysfollowthelocaldisposalregulations.

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8.0Declaration

8.1Declarationofconformity

8.1.1Substationlabel

Normallythebelowmentioneddeclarationofconformityapplies:

"Substations-Category0withelectricalequipment".

Unlessttedwithayellowlabel(PEDKAT.1)onthesubstationlabel

thenthefollowingdeclarationofconformityapplies:"Substations-

Category1withelectricalequipment".

PED

KAT.

Category0withelectricalequipment

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Category1withelectricalequipment

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OperatingGuideTermixBL

Danfoss Termix BL Operating instructions

Brand: Danfoss

Model: Termix BL

Type: Operating instructions

Danfoss Termix BL

Features:

Suitable for charging systems with high momentary demands for hot water
Automatic controls for regulation of charging temperature
Pressure control to avoid cyclic variations in differential pressure
Standard connections for domestic hot water (DHW) circulation including circulation pump and non-return valve

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Danfoss Termix BL Operating instructions

Danfoss Termix BL Operating instructions

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