Danfoss A237, A337 Operating guide

OperatingGuide

ECLComfort210/296/310,applicationA237/A337

1.0TableofContents

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

1.1Importantsafetyandproductinformation.....................2

2.0Installation........................................................6

2.1Beforeyoustart.....................................................6

2.2Identifyingthesystemtype......................................13

2.3Mounting...........................................................16

2.4Placingthetemperaturesensors................................20

2.5Electricalconnections.............................................22

2.6InsertingtheECLApplicationKey..............................30

2.7Checklist............................................................37

2.8Navigation,ECLApplicationKeyA237/A337................38

3.0Dailyuse.........................................................44

3.1Howtonavigate...................................................44

3.2Understandingthecontrollerdisplay..........................45

3.3Ageneraloverview:Whatdothesymbolsmean?...........49

3.4Monitoringtemperaturesandsystem

components........................................................50

3.5Influenceoverview................................................51

3.6Manualcontrol.....................................................52

3.7Schedule............................................................53

4.0Settingsoverview............................................54

5.0Settings...........................................................57

5.1IntroductiontoSettings..........................................57

5.2Flowtemperature/Inlettemperature.........................58

5.3Roomlimit..........................................................62

5.4Returnlimit.........................................................64

5.5Flow/powerlimit.................................................70

5.6Optimization........................................................75

5.7Controlparameters................................................81

5.8Application.........................................................85

5.9Heatcut-out........................................................96

5.10Tanktemperature..................................................99

5.11Alarm..............................................................104

5.12Alarmoverview..................................................107

5.13Anti-bacteria......................................................108

6.0Commoncontrollersettings............................110

6.1Introductionto‘Commoncontrollersettings’..............110

6.2Time&Date.......................................................111

6.3Holiday............................................................112

6.4Inputoverview...................................................114

6.5Log.................................................................115

6.6Outputoverride..................................................116

6.7Keyfunctions.....................................................117

6.8System.............................................................119

7.0Miscellaneous................................................126

7.1ECA30/31setupprocedures.................................126

7.2Overridefunction................................................134

7.3Severalcontrollersinthesamesystem......................137

7.4Frequentlyaskedquestions....................................140

7.5Definitions........................................................143

7.6Type(ID6001),overview.......................................147

7.7Automatic/manualupdateoffirmware.....................148

7.8ParameterIDoverview..........................................149

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OperatingGuideECLComfort210/296/310,applicationA237/A337

1.1Importantsafetyandproductinformation

1.1.1Importantsafetyandproductinformation

ThisOperatingGuideisassociatedwithECLApplicationKeyA237
(ordercodeno.087H3806).

TheECLApplicationKeyA237contains4subtypes:

•A237.1andA237.2(applicableinECLComfort210,296and310)

•A337.1andA337.2(applicableinECLComfort310)

•A237.1:HeatingandDHWheating

•A237.2:HeatingandDHWcharging

•A337.1:HeatingandDHWheating.Externalsetpointoptional
(0-10V)

•A337.2:HeatingandDHWcharging.Externalsetpointoptional
(0-10V)

TheA237applicationkeyalsocontainsaFloor(Screed)Drying
Program.Seeseparatedocumentation.(InEnglishandGerman
languageonly).

SeetheInstallationGuide(deliveredwiththeapplicationkey)for
applicationexamplesandelectricalconnections.

Thedescribedfunctionsarerealizedin:

•ECLComfort210forbasicsolutions

•ECLComfort296forbasicsolutions,M-busandEthernet
(Internet)communication

•ECLComfort310foradvancedsolutions,M-bus,Modbusand
Ethernet(Internet)communication.

TheApplicationKeyA237complieswithECLComfort210/310
controllersasoffirmwareversion1.11.
TheApplicationKeyA237compliesalsowithECLComfort296
controllersasoffirmwareversion1.58.
Thefirmware(controllersoftware)versionisvisibleatstart-upof
thecontrollerandin‘Commoncontrollersettings’in‘System’ .

UptotwoRemoteControlUnits,ECA30orECA31,canbe
connectedforremotemonitoringandsetting.Thebuilt-inroom
temperaturesensorcanbeutilized.

TogetherwiththeECLComfort310,theadditionalInternalI/O
moduleECA32(ordercodeno.087H3202)canbeusedforextra
datacommunicationtoSCADA:

•Temperature,Pt1000(default)

•0-10voltsignals

•Digitalinput

Theset-upofinputtypecanbedonebymeansoftheDanfoss
Software"ECLTool".

Navigation:Danfoss.com>Products&Solutions>DistrictHeating
andCooling>T ools&Software>ECLTool.

TheURLis:

https://www.danfoss.com/en/service-and-support/downloads/

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TheInternalI/OmoduleECA32isplacedinthebasepartforECL
Comfort310.

ECLComfort210isavailableas:

•ECLComfort210,230volta.c.(087H3020)

•ECLComfort210B,230volta.c.(087H3030)

ECLComfort296isavailableas:

•ECLComfort296,230volta.c.(087H3000)

ECLComfort310isavailableas:

•ECLComfort310,230volta.c.(087H3040)

•ECLComfort310B,230volta.c.(087H3050)

•ECLComfort310,24volta.c.(087H3044)

TheB-typeshavenodisplayanddial.TheB-typesareoperatedby
meansoftheRemoteControlunitECA30/31:

•ECA30(087H3200)

•ECA31(087H3201)

BasepartsforECLComfort:

•forECLComfort210,230volt(087H3220)

•forECLComfort296,230volt(087H3240)

•forECLComfort310,230voltand24volt(087H3230)

AdditionaldocumentationforECLComfort210,296and310,
modulesandaccessoriesisavailableonhttp://heating.danfoss.com/.

DocumentationforECLPortal:Seehttp://ecl.portal.danfoss.com.

SafetyNote

Toavoidinjuryofpersonsanddamagestothedevice,itisabsolutely
necessarytoreadandobservetheseinstructionscarefully.

Necessaryassembly,start-up,andmaintenanceworkmustbe
performedbyqualifiedandauthorizedpersonnelonly.

Locallegislationsmustberespected.Thiscomprisesalsocable
dimensionsandtypeofisolation(doubleisolatedat230V).

AfusefortheECLComfortinstallationismax.10Atypically.

TheambienttemperaturerangesforECLComfortinoperationare:
ECLComfort210/310:0-55°C
ECLComfort296:0-45°C.
Exceedingthetemperaturerangecanresultinmalfunctions.

Installationmustbeavoidedifthereisariskforcondensation(dew).

Thewarningsignisusedtoemphasizespecialconditionsthatshould
betakenintoconsideration.

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OperatingGuideECLComfort210/296/310,applicationA237/A337

Thissymbolindicatesthatthisparticularpieceofinformationshould
bereadwithspecialattention.

Applicationkeysmightbereleasedbeforealldisplaytextsare
translated.InthiscasethetextisinEnglish.

Automaticupdateofcontrollersoftware(firmware):
Thesoftwareofthecontrollerisupdatedautomaticallywhenthekey

isinserted(asofcontrollerversion1.11(ECL210/310)andversion

1.58(ECL296)).Thefollowinganimationwillbeshownwhenthe
softwareisbeingupdated:

Progressbar

Duringupdate:

•DonotremovetheKEY
Ifthekeyisremovedbeforethehour-glassisshown,youhave
tostartafresh.

•Donotdisconnectthepower
Ifthepowerisinterruptedwhenthehour-glassisshown,the
controllerwillnotwork.

•Manualupdateofcontrollersoftware(firmware):
Seethesection"Automatic/manualupdateoffirmware"

AsthisOperatingGuidecoversseveralsystemtypes,specialsystem
settingswillbemarkedwithasystemtype.Allsystemtypesareshown
inthechapter:'Identifyingyoursystemtype'.

°C(degreesCelsius)isameasuredtemperaturevaluewhereasK
(Kelvin)oftenisusedfortemperaturedifferences.

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TheIDno.isuniquefortheselectedparameter.

ExampleFirstdigitSeconddigitLastthreedigits

1117411174

-

Circuit1Parameterno.

12174

IfanIDdescriptionismentionedmorethanonce,itmeansthatthere
arespecialsettingsforoneormoresystemtypes.Itwillbemarked
withthesystemtypeinquestion(e.g.12174-A266.9).

ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.

xstandsforcircuit/parametergroup.

1

-

DisposalNote

Thissymbolontheproductindicatesthatitmaynot
bedisposedofashouseholdwaste.

Itmustbehandedovertotheapplicabletake-back
schemefortherecyclingofelectricalandelectronic
equipment.

•Disposeoftheproductthroughchannelsprovided
forthispurpose.

•Complywithalllocalandcurrentlyapplicablelaws
andregulations.

2

Circuit2Parameterno.

174

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2.0Installation

2.1Beforeyoustart

Thetwoapplications,A237.1/A337.1arealmostidentical.
However,A337.1hassomeextrafunctionswhicharedescribed
additionally.

TheapplicationsA237.1/A337.1areveryflexible.Thesearethe
basicprinciples:

Heating(circuit1):

Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.
Thelowertheoutdoortemperature,thehigherthedesiredflow
temperature.

Bymeansofaweekschedule,theheatingcircuitcanbein
‘Comfort’or‘Saving’mode.Theweekschedulecanhaveupto3
‘Comfort’periods/day.Avalueforthedesiredroomtemperature
canbesetineachofthemodes.
InSavingmodetheheatingcanbereducedorswitchedofftotally.

ThemotorizedcontrolvalveM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.

ThereturntemperatureS5canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.Inboiler-basedheatingsupplythe
returntemperatureshouldnotbetoolow(sameadjustment
procedureasabove).

Ifthemeasuredroomtemperature(directlyconnectedtemperature
sensorESM-10(S2)orRemotecontrolunitECA30/31)doesnot
equalthedesiredroomtemperature,thedesiredflowtemperature
canbeadjusted.

ThecirculationpumpP1isONatheatdemandoratfrost
protection.ThecirculationpumpP1canbeswitchedOFFwhen
heatingtheDHW.Ifthesystemhasachangeovervalve(P2/M2)
betweentheheatingandDHWcircuit,thecirculationpumpP1
isONwhenheatingtheDHW.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.

TypicalA237.1/A337.1application:

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL210/296/
310

S1

S2Roomtemperaturesensor

S3

S5Returntemperaturesensor,circuit1

S6

S7

S8

P1

P2DHWpump,circuit2

P3

M1

A1

ElectroniccontrollerECLComfort210,296or310

Outdoortemperaturesensor

Flowtemperaturesensor,circuit1

DHWtanktemperaturesensor,upper

Flow/energymeter(pulsesignal)

DHWtanktemperaturesensor,lower

Circulationpump,heating,circuit1

DHWcirculationpump,circuit2

Motorizedcontrolvalve(3-pointcontrolled).
Alternative:Thermoactuator(DanfosstypeABV)

Alarm

Aconnectedfloworenergymeterbasedonpulses(S7)canlimit
thefloworenergytoasetmaximumvalue.Furthermore,the
limitationcanbeinrelationtotheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedflow/power.

Thefrostprotectionmodemaintainsaselectableflowtemperature
value,forexample10°C.

Analarmcanbeactivatediftheactualflowtemperaturediffers
fromthedesiredflowtemperature.

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A237.1,ex.a,A337.1,ex.a

DuringDHWheating,thecirculationpumpP1intheheatingcircuit
can:

•beswitchedOFF(DHWprioritymode)

or

•remainON,aslongastheheatingtemperatureatS3doesnot
differmorethanasetvaluefromthedesiredtemperature
(dependentparallelmode)

or

•becontinuouslyON.Thismeanssametemperatureinthe
heatingcircuitastheDHWheatingtemperature(parallel
mode).

A237.1usedinECL296/310

Theflow/powersignalcancomeasapulsesignaloranM-bus
signal.

A337.1

Thedesiredflowtemperatureoftheheatingcircuitcan,viaS10,be
controlledbymeansofanexternalvoltageintherange0-10volt.

ModbuscommunicationtoaSCADAsystemcanbeestablished.

AconnectedfloworenergymeterbasedonM-bussignalcan
limitthefloworpowertoasetmaximumvalue.Furthermore,the
limitationcanbeinrelationtotheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedflow/power.
M-busdatacanbetransferredtotheModbuscommunication.

Heatingingeneral

Exerciseofcirculationpumpsandcontrolvalveinperiodswithout
heatingdemandcanbearranged.

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OperatingGuideECLComfort210/296/310,applicationA237/A337

DHW(circuit2):

Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode.Theweekschedulecanhaveupto3‘Comfort’
periods/day.AvalueforthedesiredDHWtemperaturecanbe
setineachofthemodes.

DHWheatingstart,DHWtankwith1or2temperaturesensors

WhenthemeasuredDHWtemperatureS6getslowerthanthestart
temperature,theheatingcirculationpumpP1isswitchedOFFand
theDHWheatingpumpP2isswitchedON.
ThemotorizedcontrolvalveM1iscontrolledinordertomaintain
theheatingtemperatureatS3.
AdelayedstartoftheDHWheatingpumpcanbearranged.Inthis
case,S3mustbeplacedintheheat-exchanger.
TheDHWheatingtemperatureisdeterminedbythedesiredDHW
temperatureatS6plusthesetchargingdifference.Thecharging
temperatureistypically5-10degreeshigherthanthedesired
DHWtemperature.

ThereturntemperatureS5,whentheDHWheating/chargingis
active,canbelimitedtoasetvalue.

Chargingstop,DHWtankwith1temperaturesensor

WhenthemeasuredDHWtemperatureS6getshigherthanthe
charging-stoptemperature,theDHWheatingpumpP2isswitched
OFF.Apost-runtimecanbeset.

Chargingstop,DHWtankwith2temperaturesensors

A237.1/A337.1examplea:

A237.1/A337.1exampleb:

A237.1/A337.1examplec:

WhenthemeasuredDHWtemperatureS6gets2Khigherthanthe
heating-starttemperatureANDthelowertanktemperatureS8gets
higherthantheheating-stoptemperature,theDHWheatingpump
P2isswitchedOFF.Apost-runtimecanbeset.

Iftheinstallationhasachangeovervalve(P2/M2),alsocalled
priority-valve,betweentheheatingandtheDHWcircuits,the
changeovervalveisactivatedatDHWheatingdemand.The
circulationpump(P1)isONwhenheatingtheDHW.

Parallelmodeintwo-pumpapplications:
Ifthechargingtemperaturehasavalueclosetothedesiredflow
temperatureintheheatingcircuit,thecirculationpump(P1)inthe
heatingcircuitwillnotbeswitchedOFFduringDHWheating.

Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.

TheDHWcircuitcanbeconnectedprimarilyandthevalve‘P2/
M2’operatesasON/OFFvalve.

TheDHWcirculationpump(P3)hasaweekscheduleforupto3
ON-periods/day.

TheDHWcirculationpumpP3canbeswitchedOFFduringDHW
heating/charging.

A237.1/A337.1exampled:

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OperatingGuideECLComfort210/296/310,applicationA237/A337

ApplicationA237.1andA337.1,ingeneral

Unusedinputcan,bymeansofanoverrideswitch,beusedto
overridethescheduletoafixed'Comfort'or'Saving'mode.

ModbuscommunicationtoaSCADAsystemcanbeestablished.
InECLComfort296/310theM-busdatacanfurthermorebe
transferredtotheModbuscommunication.

Thetwoapplications,A237.2/A337.2arealmostidentical.
However,A337.2hassomeextrafunctionswhicharedescribed
additionally.

TheapplicationsA237.2/A337.2areveryflexible.Thesearethe
basicprinciples:

Heating(circuit1):

Theheatingcircuitworksasdescribedpreviously.

A237.2,ex.a,A337.2,ex.a

DuringDHWheating,thecirculationpumpP1intheheatingcircuit
can:

•beswitchedOFF(DHWprioritymode)

or

•remainON,aslongastheheatingtemperatureatS3doesnot
differmorethanasetvaluefromthedesiredtemperature
(dependentparallelmode)

or

•becontinuouslyON.Thismeanssametemperatureinthe
heatingcircuitastheDHWheatingtemperature(parallel
mode).

A237.2usedinECL296

Theflow/powersignalcancomeasapulsesignaloranM-bus
signal.

A337.2

Thedesiredflowtemperatureoftheheatingcircuitcan,viaS10,be
controlledbymeansofanexternalvoltageintherange0-10volt.

TypicalA237.2/A337.2application:

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL210/296/

ElectroniccontrollerECLComfort210,296or310

310
S1

Outdoortemperaturesensor

S2Roomtemperaturesensor

S3

Flowtemperaturesensor,circuit1

S5Returntemperaturesensor,circuit1

S6

S7

S8

P1

DHWtanktemperaturesensor,upper

Flow/energymeter(pulsesignal)

DHWtanktemperaturesensor,lower

Circulationpump,heating,circuit1

P2DHWpump,circuit2

P3

P4

M1

DHWcirculationpump,circuit2

DHWchargingpump,circuit2

Motorizedcontrolvalve(3-pointcontrolled).
Alternative:Thermoactuator(DanfosstypeABV).

A1

Alarm(A337.2only)

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OperatingGuideECLComfort210/296/310,applicationA237/A337

DHW(circuit2):

Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode.Theweekschedulecanhaveupto3‘Comfort’
periods/day.AvalueforthedesiredDHWtemperature
canbesetineachofthemodes.

DHWchargingstart,DHWtankwith1or2temperaturesensors

WhenthemeasuredDHWtemperatureS6getslowerthanthe
charging-starttemperature,theheatingcirculationpumpP1is
switchedOFFandtheDHWheatingpumpP2isswitchedON.

AdelayedstartoftheDHWchargingpumpP4canbearranged.
Also,itcanbearrangedthatthestartofthechargingpump
dependsontheDHWheatingtemperature.Inthiscase,S4mustbe
placedintheheat-exchanger.

TheDHWheatingtemperatureisdeterminedbythedesiredDHW
temperatureatS6plusthesetchargingdifference.Thecharging
temperatureistypically5-10degreeshigherthanthedesired
DHWtemperature.

ThereturntemperatureS5,whentheDHWheating/chargingis
active,canbelimitedtoasetvalue.

TheDHWheatingtemperatureatS3isadaptedtothedesiredDHW
chargingtemperatureatS4.IftheDHWchargingtemperatureat
S4cannotbereached,theECLcontrollergraduallyincreasesthe
desiredDHWheatingtemperatureatS3inordertoobtaintheDHW
chargingtemperature.TheECLcontrollerrememberstheadapted
S3temperature.Amaximumtemperaturevaluecanbeset.

A237.2/A337.2examplea:

A237.2/A337.2exampleb:

ThemotorizedcontrolvalveM1iscontrolledinordertomaintain
thechargingtemperatureatS4.

DHWchargingstop,DHWtankwith1temperaturesensor

WhenthemeasuredDHWtemperatureS6getshigherthan
thecharging-stoptemperature,theDHWchargingpumpP4is
switchedOFF.Apost-runtimecanbeset.

Chargingstop,DHWtankwith2temperaturesensors

WhenthemeasuredDHWtemperatureS6gets2Khigherthan
thecharging-starttemperatureANDthelowertanktemperature
S8getshigherthanthecharging-stoptemperature,theDHW
chargingpumpP4isswitchedOFF.Apost-runtimecanbeset.

Iftheinstallationhasachangeovervalve(P2/M2),alsocalled
priority-valve,betweentheheatingandtheDHWcircuits,the
changeovervalveisactivatedatDHWheatingdemand.The
circulationpump(P1)isONwhenheatingtheDHW.

Parallelmodeintwo-pumpapplications:
Ifthechargingtemperaturehasavalueclosetothedesiredflow
temperatureintheheatingcircuit,thecirculationpump(P1)inthe
heatingcircuitwillnotbeswitchedOFFduringDHWheating.

Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.

TheDHWcirculationpump(P3)hasaweekscheduleforupto3
ON-periodsperday.

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ApplicationA237.2andA337.2,ingeneral:

Unusedinputcan,bymeansofanoverrideswitch,beusedto
overridethescheduletoafixed'Comfort'or'Saving'mode.

ModbuscommunicationtoaSCADAsystemcanbeestablished.In
ECLComfort310theM-busdatacanfurthermorebetransferred
totheModbuscommunication.

A237,ingeneral

Flow/energylimitation.

ECLComfort210:
ThesubtypesA237.1andA237.2canutilizetheflow/powersignal
comingasapulsesignal.

ECLComfort296:
ThesubtypesA237.1andA237.2canutilizetheflow/powersignal
comingasapulsesignaloranM-bussignal.

ECLComfort310:
ThesubtypesA337.1andA337.2canutilizetheflow/powersignal
comingasanM-bussignal.

Alarm

A237.1:
AlarmA1(=relay4)canbeactivated:

•iftheactualflowtemperaturediffersfromthedesiredflow
temperature

•ifatemperaturesensororitsconnectiondisconnects/short
circuits.(See:Commoncontrollersettings>System>Raw
inputoverview)

A237.2:
Noalarmfunctionpresent

A337.1,A337.2:
AlarmA1(=relay6)canbeactivated:

•iftheactualflowtemperaturediffersfromthedesiredflow
temperature

•ifatemperaturesensororitsconnectiondisconnects/short
circuits.(See:Commoncontrollersettings>System>Raw
inputoverview)

Inputconfiguration

Inputs(asfromS7andup)whicharenotpartoftheapplication
canbeconfiguredtobePt1000,0-10VoltorDigitalinput.This
featuremakesitpossibletocommunicateextrasignals,suchas
temperatures,pressures,ON/OFFconditions,viaModbusand
ECLPortal.
TheconfigurationisdonebymeansoftheECLTool(freesoftware
fordownload)ordirectlyinadedicatedmenuintheECLPortal.

Dependingonsystemtype,itisrecommendedtochangesome
factorysettingsindividuallyinordertooptimizethefunctionality.
Thesesettingchanges,ifrequired,arelistedbelowthesystem
typesinthesection'Identifyingthesystemtype'.

WhentheA237hasbeenuploadedtheECLComfortcontroller
startsinManualmode.Thiscanbeusedforcheckingthecontrolled
componentsforcorrectfunctionality.

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Thecontrollerispre-programmedwithfactorysettingsthatareshown
inthe‘ParameterIDoverview’appendix.

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2.2Identifyingthesystemtype

Sketchyourapplication

TheECLComfortcontrollerseriesisdesignedforawiderange
ofheating,domestichot-water(DHW)andcoolingsystemswith
differentconfigurationsandcapacities.Ifyoursystemdiffers
fromthediagramsshownhere,youmaywanttomakeasketch
ofthesystemabouttobeinstalled.Thismakesiteasiertouse
theOperatingGuide,whichwillguideyoustep-by-stepfrom
installationtofinaladjustmentsbeforetheend-usertakesover.

TheECLComfortcontrollerisauniversalcontrollerthatcanbe
usedforvarioussystems.Basedontheshownstandardsystems,
itispossibletoconfigureadditionalsystems.Inthischapteryou
findthemostfrequentlyusedsystems.Ifyoursystemisnotquite
asshownbelow,findthediagramwhichhasthebestresemblance
withyoursystemandmakeyourowncombinations.

SeetheInstallationGuide(deliveredwiththeapplicationkey)for
applicationtypes/sub-types.

Thecirculationpump(s)inheatingcircuit(s)canbeplacedintheflow
aswellasthereturn.Placethepumpaccordingtothemanufacturer’s
specification.

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Adviceforsettings:

Factorysettingsinthesubtypeswillrunthemostapplication
examples.Someoftheapplicationexamplesneedchangeof
dedicatedsettings.

Seethedocumentationforapplicationsandsubtypes,delivered
withtheapplicationkey.

A237.1,ex.a
A337.1,ex.a

Twopumpsystem:

Issue:

DHWcircuit(2):

Pump

A237.1,ex.b
A337.1,ex.b

OnepumpandChange-overvalvesystem:

Issue:

DHWcircuit(2):

Change-overvalve

A237.1,ex.c
A237.1,ex.d
A337.1,ex.c
A337.1,ex.d

DHWheatingconnectedprimarily:

Issue:

DHWcircuit(2):

Change-overvalve

DHWcircuit(2):

Tankprimarily

Navigation:

MENU\Settings\Application:
'Ch.-o.valve/P'

Navigation:

MENU\Settings\Application:
'Ch.-o.valve/P'

Navigation:

MENU\Settings\Application:
'Ch.-o.valve/P'

MENU\Settings\Application:
'Tank,sec./prim'

IDno.:

12051

IDno.:

12051

IDno.:

12051

12053

Recommended
setting:

ON

Recommended
setting:

OFF

Recommended
setting:

OFF

ON

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Adviceforsettings:

A237.2,ex.a
A337.2,ex.a

Twopumpsystem:

Issue:

DHWcircuit(2):

Pump

A237.2,ex.b
A337.2,ex.b

OnepumpandChange-overvalvesystem:

Issue:

DHWcircuit(2):

Pump

Navigation:

MENU\Settings\Application:
'Ch.-o.valve/P'

Navigation:

MENU\Settings\Application:
'Ch.-o.valve/P'

IDno.:

12051

IDno.:

12051

Recommended
setting:

ON

Recommended
setting:

OFF

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2.3Mounting

2.3.1MountingtheECLComfortcontroller

SeetheInstallationGuidewhichisdeliveredtogetherwiththe
ECLComfortcontroller.

Foreasyaccess,youshouldmounttheECLComfortcontrollernear
thesystem.

ECLComfort210/296/310canbemounted

•onawall

•onaDINrail(35mm)

ECLComfort296canbemounted

•inapanelcut-out

ECLComfort210canbemountedinanECLComfort310basepart
(forfutureupgrade).

Screws,PGcableglandsandrawlplugsarenotsupplied.

LockingtheECLComfort210/310controller

InordertofastentheECLComfortcontrollertoitsbasepart,secure
thecontrollerwiththelockingpin.

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Topreventinjuriestopersonsorthecontroller,thecontrollerhasto
besecurelylockedintothebase.Forthispurpose,pressthelocking
pinintothebaseuntilaclickisheardandthecontrollernolonger
canberemovedfromthebase.

Ifthecontrollerisnotsecurelylockedintothebasepart,thereisarisk
thatthecontrollerduringoperationcanunlockfromthebaseandthe
basewithterminals(andalsothe230Va.c.connections)areexposed.
Topreventinjuriestopersons,alwaysmakesurethatthecontroller
issecurelylockedintoitsbase.Ifthisisnotthecase,thecontroller
shouldnotbeoperated!

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Mountingonawall

Mountthebasepartonawallwithasmoothsurface.Establishthe
electricalconnectionsandpositionthecontrollerinthebasepart.
Securethecontrollerwiththelockingpin.

MountingonaDINrail(35mm)

MountthebasepartonaDINrail.Establishtheelectrical
connectionsandpositionthecontrollerinthebasepart.Secure
thecontrollerwiththelockingpin.

Theeasywaytolockthecontrollertoitsbaseorunlockitistousea
screwdriveraslever.

DismountingtheECLComfortcontroller

Inordertoremovethecontrollerfromthebasepart,pulloutthe
lockingpinbymeansofascrewdriver.Thecontrollercannowbe
removedfromthebasepart.

Theeasywaytolockthecontrollertoitsbaseorunlockitistousea
screwdriveraslever.

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2.3.2MountingtheRemoteControlUnitsECA30/31

Selectoneofthefollowingmethods:

•Mountingonawall,ECA30/31

•Mountinginapanel,ECA30

Screwsandrawlplugsarenotsupplied.

Mountingonawall

MountthebasepartoftheECA30/31onawallwithasmooth
surface.Establishtheelectricalconnections.PlacetheECA30/
31inthebasepart.

BeforeremovingtheECLComfortcontrollerfromthebasepart,ensure
thatthesupplyvoltageisdisconnected.

Mountinginapanel

MounttheECA30inapanelusingtheECA30framekit(ordercode
no.087H3236).Establishtheelectricalconnections.Securethe
framewiththeclamp.PlacetheECA30inthebasepart.TheECA
30canbeconnectedtoanexternalroomtemperaturesensor.

TheECA31mustnotbemountedinapanelifthehumidity
functionistobeused.

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2.3.3MountingtheinternalI/OmoduleECA32

MountingoftheinternalI/OmoduleECA32

TheECA32module(ordercodeno.087H3202)mustbeinserted
intotheECLComfort310/310Bbasepartforadditionalinputand
outputsignalsinrelevantapplications.

TheconnectionbetweentheECLComfort310/310BandECA32
isa10-pole(2x5)connector.Theconnectionisautomatically
establishedwhentheECLComfort310/310Bisplacedonthe
basepart.

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2.4Placingthetemperaturesensors

2.4.1Placingthetemperaturesensors

Itisimportantthatthesensorsaremountedinthecorrectposition
inyoursystem.

Thetemperaturesensormentionedbelowaresensorsusedforthe
ECLComfort210/296/310serieswhichnotallwillbeneeded
foryourapplication!

Outdoortemperaturesensor(ESMT)

Theoutdoorsensorshouldbemountedonthatsideofthebuilding
whereitislesslikelytobeexposedtodirectsunshine.Itshouldnot
beplacedclosetodoors,windowsorairoutlets.

Flowtemperaturesensor(ESMU,ESM-11orESMC)

Placethesensormax.15cmfromthemixingpoint.Insystems
withheatexchanger,DanfossrecommendsthattheESMU-typeto
beinsertedintotheexchangerflowoutlet.

Makesurethatthesurfaceofthepipeiscleanandevenwhere
thesensorismounted.

Returntemperaturesensor(ESMU,ESM-11orESMC)

Thereturntemperaturesensorshouldalwaysbeplacedsothatit
measuresarepresentativereturntemperature.

Roomtemperaturesensor
(ESM-10,ECA30/31RemoteControlUnit)

Placetheroomsensorintheroomwherethetemperatureistobe
controlled.Donotplaceitonoutsidewallsorclosetoradiators,
windowsordoors.

Boilertemperaturesensor(ESMU,ESM-11orESMC)

Placethesensoraccordingtotheboilermanufacturer’s
specification.

Airducttemperaturesensor(ESMB-12orESMUtypes)

Placethesensorsothatitmeasuresarepresentativetemperature.

DHWtemperaturesensor(ESMUorESMB-12)

PlacetheDHWtemperaturesensoraccordingtothemanufacturer’s
specification.

Slabtemperaturesensor(ESMB-12)

Placethesensorinaprotectiontubeintheslab.

ESM-11:Donotmovethesensorafterithasbeenfastenedinorderto
avoiddamagetothesensorelement.

ESM-11,ESMCandESMB-12:Useheatconductingpasteforquick
measurementofthetemperature.

ESMUandESMB-12:Usingasensorpockettoprotectthesensorwill,
however,resultinaslowertemperaturemeasurement.

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Pt1000temperaturesensor(IEC751B,1000Ω/0°C)

Relationshipbetweentemperatureandohmicvalue:

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2.5Electricalconnections

2.5.1Electricalconnections230Va.c.

Warning

ElectricconductorsonPCB(PrintedCircuitBoard)forsupplyvoltage,
relaycontactsandtriacoutputsdonothavemutualsafetydistanceof
minimum6mm.Theoutputsarenotallowedtobeusedasgalvanic
separated(voltfree)outputs.

Ifagalvanicseparatedoutputisneeded,anauxiliaryrelayis
recommended.

24Voltcontrolledunits,forexampleactuators,aretobecontrolledby
meansofECLComfort310,24Voltversion.

SafetyNote

Necessaryassembly,start-up,andmaintenanceworkmustbe
performedbyqualifiedandauthorizedpersonnelonly.

Locallegislationsmustberespected.Thiscomprisesalsocablesize
andisolation(reinforcedtype).

AfusefortheECLComfortinstallationismax.10Atypically.

TheambienttemperaturerangefortheECLComfortinoperationis
0-55°C.Exceedingthistemperaturerangecanresultinmalfunctions.

Installationmustbeavoidedifthereisariskforcondensation(dew).

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Thecommongroundterminalisusedforconnectionofrelevant
components(pumps,motorizedcontrolvalves).

ECL210/310

ECL296

SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.

Maximumloadratings:

Relayterminals

4(2)A/230Va.c.
(4Aforohmicload,2Afor
inductiveload)

Triac(=electronic

0,2A/230Va.c.

relay)terminals

Wirecrosssection:0.5-1.5mm²
Incorrectconnectioncandamagetheelectronicoutputs.
Max.2x1.5mm²wirescanbeinsertedintoeachscrewterminal.

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2.5.2Electricalconnections,Pt1000temperaturesensors

SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.

Sensor

S1

Description

Outdoortemperature
sensor*

S2
S3

S4

Roomtemperaturesensor**

Flowtemperaturesensor***

A237.2/A337.2:
DHWchargingtemperature
sensor

S5Returntemperaturesensor

S6

DHWtanktemperature
sensor,upper****

S7

A237.1,A237.2:
Flow/energymeter(pulse
signal)

S8

DHWtanktemperature
sensor,lower

S9

ECL310only:
Notused

S10

ECL310only:
A337.1,A337.2
Voltagesignal(0-10V)for
externalcontrolofdesired
flowtemperature

Recommended
type

ESMT

ESM-10

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESMB/
ESMU

ESMB/
ESMU

*

Iftheoutdoortemperaturesensorisnotconnectedorthe
cableisshort-circuited,thecontrollerassumesthatthe
outdoortemperatureis0(zero)°C.

**

Onlyforroomtemperaturesensorconnection.Theroom
temperaturesignalcanalternativelybeavailablefroma
RemoteControlUnit(ECA30/31).See'Electricalconnections,
ECA30/31'.

***

Theflowtemperaturesensormustalwaysbeconnected
inordertohavethedesiredfunctionality.Ifthesensoris
notconnectedorthecableisshort-circuited,themotorized
controlvalvecloses(safetyfunction).

****

Thissensorisusedifonlyonetanktemperaturesensoris
required.

Wirecrosssectionforsensorconnections:Min.0.4mm².
Totalcablelength:Max.200m(allsensorsincl.internalECL485

communicationbus).
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).

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A337.1/A337.2:

Connectionofvoltagesignal(0–10V)forexternalcontrolof
desiredflowtemperature

Connectionofflow/energymeterwithpulsesignal

SeetheInstallationGuide(deliveredwiththeapplicationkey).

Theoutputoftheflow/energymetercanbeequippedwithan
externalpull-upresistorifaninternalpull-upresistorisnotpresent.

Connectionofswitchforexternaloverride

Pulsebasedsignalforflow/power ,appliedtoinputS7

Formonitoring:
Frequencyrangeis0.01-200Hz

Forlimitation:
Minimumfrequencyisrecommendedtobe1Hzinordertohavea

stablecontrol.Furthermore,thepulsesmustappearregularly.

Wirecrosssectionforsensorconnections:Min.0.4mm².
Totalcablelength:Max.200m(allsensorsincl.internalECL485

communicationbus).
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).

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2.5.3Electricalconnections,ECA30/31

Terminal
ECL

Terminal
ECA30/31

30
31

4

1
322
333

4

5

*

Afteranexternalroomtemperaturesensorhasbeenconnected,

Description

Twistedpair

Twistedpair

Ext.roomtemperature
sensor*

Type
(recomm.)

Cable2x
twistedpair

ESM-10

ECA30/31mustberepowered.

ThecommunicationtotheECA30/31mustbesetupintheECL
Comfortcontrollerin'ECAaddr.'

TheECA30/31mustbesetupaccordingly.

AfterapplicationsetuptheECA30/31isreadyafter2–5min.A
progressbarintheECA30/31isdisplayed.

Iftheactualapplicationcontainstwoheatingcircuits,itispossible
toconnectanECA30/31toeachcircuit.Theelectricalconnections
aredoneinparallel.

Max.2ECA30/31canbeconnectedtoanECLComfort310controller
ortoECLComfort210/296/310controllersinamaster-slavesystem.

SetupproceduresforECA30/31:Seesection‘Miscellaneous’ .

ECAinformationmessage:
‘Applicationreq.newerECA’:
Thesoftware(firmware)ofyourECAdoesnotcomplywiththe

software(firmware)ofyourECLComfortcontroller.Pleasecontact
yourDanfosssalesoffice.

Someapplicationsdonotcontainfunctionsrelatedtoactualroom
temperature.TheconnectedECA30/31willonlyfunctionasremote
control.

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Totalcablelength:Max.200m(allsensorsincl.internalECL485
communicationbus).

Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).

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2.5.4Electricalconnections,master/slavesystems

Thecontrollercanbeusedasmasterorslaveinmaster/slave
systemsviatheinternalECL485communicationbus(2xtwisted
paircable).

TheECL485communicationbusisnotcompatiblewiththeECL
businECLComfort110,200,300and301!

Terminal

Description

Type
(recomm.)

30

Commonterminal
+12V*,ECL485communicationbus

31

*OnlyforECA30/31andmaster/
slavecommunication

32

B,ECL485communicationbus

33

A,ECL485communicationbus

Cable2x
twistedpair

ECL485buscable

MaximumrecommendedlengthoftheECL485busiscalculatedlike
this:

Subtract"TotallengthofallinputcablesofallECLcontrollersinthe
master-slavesystem"from200m.

Simpleexamplefortotallengthofallinputcables,3xECL:

1xECL

3xECL

3xECLReturntemp.sensor:

3xECLRoomtemp.sensor:

Total:

Outdoortemp.sensor:

Flowtemp.sensor:

15m

18m

18m

30m

81m

2.5.5Electricalconnections,communication

Electricalconnections,Modbus

ECLComfort210:Non-galvanicisolatedModbusconnections
ECLComfort296:GalvanicisolatedModbusconnections
ECLComfort310:GalvanicisolatedModbusconnections

MaximumrecommendedlengthoftheECL485bus:
200-81m=119m

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2.5.6Electricalconnections,communication

Electricalconnections,M-bus

ECLComfort210:Notimplemented
ECLComfort296:Onboard,non-galvanicisolated.Max.cable
length50m.
ECLComfort310:Onboard,non-galvanicisolated.Max.cable
length50m.

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2.6InsertingtheECLApplicationKey

2.6.1InsertingtheECLApplicationKey

TheECLApplicationKeycontains

•theapplicationanditssubtypes,

•currentlyavailablelanguages,

•factorysettings:e.g.schedules,desiredtemperatures,
limitationvaluesetc.Itisalwayspossibletorecoverthefactory
settings,

•memoryforusersettings:specialuser/systemsettings.

Afterhavingpowered-upthecontroller,differentsituationsmight
beexisting:

1.Thecontrollerisnewfromthefactory,theECLApplicationKey
isnotinserted.

2.Thecontrolleralreadyrunsanapplication.TheECLApplication
Keyisinserted,buttheapplicationneedstobechanged.

3.Acopyofthecontrollerssettingsisneededforconfiguring
anothercontroller.

ECLComfort210/310

ECLComfort210/310

Usersettingsare,amongothers,desiredroomtemperature,desired
DHWtemperature,schedules,heatcurve,limitationvaluesetc.

Systemsettingsare,amongothers,communicationset-up,display
brightnessetc.

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