Danfoss A266 Operating guide
OperatingGuide
ECLComfort210/296/310,applicationA266
1.0TableofContents
1.0TableofContents...............................................1
1.1Importantsafetyandproductinformation.....................2
2.0Installation........................................................6
2.1Beforeyoustart.....................................................6
2.2Identifyingthesystemtype......................................14
2.3Mounting...........................................................15
2.4Placingthetemperaturesensors................................19
2.5Electricalconnections.............................................21
2.6InsertingtheECLApplicationKey..............................30
2.7Checklist............................................................37
2.8Navigation,ECLApplicationKeyA266.........................38
3.0Dailyuse.........................................................58
3.1Howtonavigate...................................................58
3.2Understandingthecontrollerdisplay..........................59
3.3Ageneraloverview:Whatdothesymbolsmean?...........63
3.4Monitoringtemperaturesandsystem
components........................................................64
3.5Influenceoverview................................................65
3.6Manualcontrol.....................................................66
3.7Schedule............................................................67
4.0Settingsoverview............................................68
5.0Settings...........................................................71
5.1IntroductiontoSettings..........................................71
5.2Flowtemperature..................................................72
5.3Roomlimit..........................................................75
5.4Returnlimit.........................................................77
5.5Flow/powerlimit.................................................83
5.6Optimization........................................................88
5.7Controlparameters................................................95
5.8Application.......................................................102
5.9Heatcut-out......................................................110
5.10Alarm..............................................................113
5.11Alarmoverview..................................................119
5.12Anti-bacteria......................................................120
6.0Commoncontrollersettings............................122
6.1Introductionto‘Commoncontrollersettings’..............122
6.2Time&Date.......................................................123
6.3Holiday............................................................124
6.4Inputoverview...................................................126
6.5Log.................................................................127
6.6Outputoverride..................................................128
6.7Keyfunctions.....................................................129
6.8System.............................................................131
7.0Miscellaneous................................................138
7.1ECA30/31setupprocedures.................................138
7.2Overridefunction................................................146
7.3Severalcontrollersinthesamesystem......................149
7.4Frequentlyaskedquestions....................................152
7.5Definitions........................................................155
7.6Type(ID6001),overview.......................................159
7.7Automatic/manualupdateoffirmware.....................160
7.8ParameterIDoverview..........................................161
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OperatingGuideECLComfort210/296/310,applicationA266
1.1Importantsafetyandproductinformation
1.1.1Importantsafetyandproductinformation
ThisOperatingGuideisassociatedwithECLApplicationKeyA266
(ordercodeno.087H3800).
TheECLApplicationKeyA266contains4subtypes,allapplicablein
ECLComfort210,296and310:
•A266.1:HeatingandDHW
•A266.2:HeatingandadvancedDHW
•A266.9:HeatinginclusivepressuremonitoringandDHW.
Returntemperaturemonitoringonheatingside.
•A266.10:HeatingandDHW.Returntemperaturemonitoringon
heatingside.
TheA266applicationkeyalsocontainsaFloor(Screed)Drying
Program.Seeseparatedocumentation.(InEnglishandGerman
languageonly).
SeetheInstallationGuide(deliveredwiththeapplicationkey)for
applicationexamplesandelectricalconnections.
ThedescribedfunctionsarerealizedinECLComfort210for
basicsolutionsandinECLComfort296and310foradvanced
solutions,forexampleM-bus,ModbusandEthernet(Internet)
communication.
TheapplicationKeyA266complieswithECLComfort210,ECL
Comfort296andECLComfort310controllersasofsoftware
version1.11(visibleatstart-upofthecontrollerandin'Common
controllersettings'in'System').
UptotwoRemoteControlUnits,ECA30orECA31,canbe
connectedandthebuilt-inroomtemperaturesensorcanbe
utilized.
TogetherwiththeECLComfort310,theadditionalInternalI/O
moduleECA32(ordercodeno.087H3202)canbeusedforextra
datacommunicationtoSCADA:
•Temperature,Pt1000(default)
•0-10voltsignals
Theset-upofinputtypecanbedonebymeansoftheDanfoss
Software"ECLTool".
Navigation:Danfoss.com>Serviceandsupport>Downloads>
Tools>ECLTool.TheURLis:
https://www.danfoss.com/en/service-and-support/downloads
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)
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OperatingGuideECLComfort210/296/310,applicationA266
TheB-typeshavenodisplayanddial.TheB-typesareoperatedby
meansoftheRemoteControlunitECA30/31:
•ECA30(087H3200)
•ECA31(087H3201)
BasepartsforECLComfort:
•forECLComfort210,230volta.c.(087H3220)
•forECLComfort296,230volta.c.(087H3240)
•forECLComfort310,230volta.c.and24volta.c(087H3230)
AdditionaldocumentationforECLComfort210,296and310,
modulesandaccessoriesisavailableonhttp://danfoss.com/.
DocumentationforECLPortal:Seehttps://ecl.portal.danfoss.com.
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"
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OperatingGuideECLComfort210/296/310,applicationA266
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.
Thissymbolindicatesthatthisparticularpieceofinformationshould
bereadwithspecialattention.
AsthisOperatingGuidecoversseveralsystemtypes,specialsystem
settingswillbemarkedwithasystemtype.Allsystemtypesareshown
inthechapter:'Identifyingyoursystemtype'.
°C(degreesCelsius)isameasuredtemperaturevaluewhereasK
(Kelvin)oftenisusedfortemperaturedifferences.
TheIDno.isuniquefortheselectedparameter.
ExampleFirstdigitSeconddigitLastthreedigits
1117411174
-
Circuit1Parameterno.
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12174
IfanIDdescriptionismentionedmorethanonce,itmeansthatthere
arespecialsettingsforoneormoresystemtypes.Itwillbemarked
withthesystemtypeinquestion(e.g.12174-A266.9).
1
-
2
Circuit2Parameterno.
174
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OperatingGuideECLComfort210/296/310,applicationA266
ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.
xstandsforcircuit/parametergroup.
DisposalNote
Thissymbolontheproductindicatesthatitmaynot
bedisposedofashouseholdwaste.
Itmustbehandedovertotheapplicabletake-back
schemefortherecyclingofelectricalandelectronic
equipment.
•Disposeoftheproductthroughchannelsprovided
forthispurpose.
•Complywithalllocalandcurrentlyapplicablelaws
andregulations.
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OperatingGuideECLComfort210/296/310,applicationA266
2.0Installation
2.1Beforeyoustart
TheECLApplicationkeyA266contains4subtypes,A266.1,
A266.2,A266.9andA266.10whicharealmostidentical.
TheapplicationA266.1isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.Theflowtemperaturesensor(S3)isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredroomtemperature).
InSavingmodetheheatingcanbereducedorswitchedofftotally.
Themotorizedcontrolvalve(M2)isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
Thereturntemperature(S5)canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Ifthemeasuredroomtemperaturedoesnotequalthedesired
roomtemperature,thedesiredflowtemperaturecanbeadjusted.
Thecirculationpump,P2,isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Aconnectedfloworenergymeterbasedonpulses(S7)canlimit
thefloworenergytoasetmaximumvalue.Furthermorethe
limitationcanbeinrelationtotheoutdoortemperature.Typically,
thelowertheoutdoortemperature,thehighertheacceptedflow/
power.WhentheA266.1isusedinanECLComfort310theflow/
energysignalcanalternativelycomeasanM-bussignal.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
DHW(circuit2):
IfthemeasuredDHWtemperature(S4)islowerthanthedesired
DHWtemperature,themotorizedcontrolvalve(M1)isopened
graduallyandviceversa.
Thereturntemperature(S6)canbelimitedtoafixedvalue.
TypicalA266.1application:
M1,M2=3–point/0–10V
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
ECL210/296
/310
S1
S2
S3
S4
S5
S6
S7
P1
P2
M1
M2
A1
V1
V2
ElectroniccontrollerECLComfort210,296or310
Outdoortemperaturesensor
(Optional)Roomtemperaturesensor
Flowtemperaturesensor,circuit1
DHWflowtemperaturesensor,circuit2
(Optional)Returntemperaturesensor,circuit1
(Optional)DHWreturntemperaturesensor,circuit2
(Optional)Flow/energymeter(pulsesignal)
Circulationpump,DHW,circuit2
Circulationpump,heating,circuit1
Motorizedcontrolvalve(3-pointcontrolled),circuit2
Motorizedcontrolvalve(3-pointcontrolled),circuit1
Alternative:Thermoactuator(DanfosstypeABV)
Alarm
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredDHWtemperature).
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OperatingGuideECLComfort210/296/310,applicationA266
Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.
IfthedesiredDHWtemperaturecannotbereached,theheating
circuitcanbeclosedgraduallytoallowmoreenergytotheDHW
circuit.
A266.1,ingeneral:
AlarmA1(=relay4)canbeactivatediftheactualflowtemperature
differsfromthedesiredflowtemperature.
HolidayprogramsarepresentforHeatingandDHW.Besides,a
holidayprogramispresentfortheentirecontroller.
WhenthesubtypeA266.1hasbeenuploaded,theECLComfort
controllerstartsinmanualmode.Thiscanbeusedforcheckingthe
controlledcomponentsforcorrectfunctionality.
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OperatingGuideECLComfort210/296/310,applicationA266
TheapplicationA266.2isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.Theflowtemperaturesensor(S3)isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredroomtemperature).
InSavingmodetheheatingcanbereducedorswitchedofftotally.
Themotorizedcontrolvalve(M2)isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
Thereturntemperature(S5)canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
TypicalA266.2application:
M2=3–point/0–10V
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Ifthemeasuredroomtemperaturedoesnotequalthedesired
roomtemperature,thedesiredflowtemperaturecanbeadjusted.
Thecirculationpump,P2,isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Aconnectedfloworenergymeterbasedonpulses(S7)canlimit
thefloworenergytoasetmaximumvalue.Furthermorethe
limitationcanbeinrelationtotheoutdoortemperature.Typically,
thelowertheoutdoortemperature,thehighertheacceptedflow/
power.WhentheA266.2isusedinanECLComfort310theflow/
energysignalcanalternativelycomeasanM-bussignal.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
DHW(circuit2):
TheDHWtemperatureatS4ismaintainedat‘Comfort’levelata
DHWdraw-off(DHWtapping)(theflowswitch(S8)isactivated).
IfthemeasuredDHWtemperature(S4)islowerthanthedesired
DHWtemperature,themotorizedcontrolvalve(M1)isopened
graduallyandviceversa.
TheDHWtemperaturecontrolisinrelationtoactualsupply
temperature(S6).Inordertocompensateforthereactiontime,the
motorizedcontrolvalvecanbepre-activatedatthestartofaDHW
draw-off(DHWtapping).Anidletemperaturecanbemaintainedat
eitherS6orS4whenthereisnodraw-off(DHWtapping).
Listofcomponents:
ECL210/296
/310
S1
S2
S3
S4
S5
S6
S7
S8
P1
P2
M1
M2
A1
V2
ElectroniccontrollerECLComfort210,296or310
Outdoortemperaturesensor
(Optional)Roomtemperaturesensor
Flowtemperaturesensor,circuit1
DHWflowtemperaturesensor,circuit2
(Optional)Returntemperaturesensor,circuit1,circuit
2orbothcircuits
(Optional)Supplytemperaturesensor,circuit2
(Optional)Flow/energymeter(pulsesignal)
Flowswitch,DHWdraw-off,circuit2
Circulationpump,DHW,circuit2
Circulationpump,heating,circuit1
Motorizedcontrolvalve(3-pointcontrolled),circuit2
Motorizedcontrolvalve(3-pointcontrolled),circuit1
Alternative:Thermoactuator(DanfosstypeABV
Alarm
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
Thereturntemperature(S5)canbelimitedtoafixedvalue.
Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredDHWtemperature).
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OperatingGuideECLComfort210/296/310,applicationA266
Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.
IfthedesiredDHWtemperaturecannotbereached,theheating
circuitcanbeclosedgraduallytoallowmoreenergytotheDHW
circuit.
A266.2,ingeneral:
AlarmA1(=relay4)canbeactivated:
•iftheactualflowtemperaturediffersfromthedesiredflow
temperature
•ifthetemperatureatS3exceedsanalarmvalue
HolidayprogramsarepresentforHeatingandDHW.Besides,a
holidayprogramispresentfortheentirecontroller.
IfthetemperatureatS3exceedsthealarmvalue'Max.flowT',the
circulationpumpP2isswitchedOFFafterelapseofthe'Delay' .
P2isswitchedONagainwhenthetemperatureatS3getsbelow
alarmvalue.
WhenthesubtypeA266.2hasbeenuploaded,theECLComfort
controllerstartsinmanualmode.Thiscanbeusedforcheckingthe
controlledcomponentsforcorrectfunctionality.
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OperatingGuideECLComfort210/296/310,applicationA266
TheapplicationA266.9isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.Theflowtemperaturesensor(S3)isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredroomtemperature).
InSavingmodetheheatingcanbereducedorswitchedofftotally.
Themotorizedcontrolvalve(M2)isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
Thereturntemperature(S5)canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Thecirculationpump,P2,isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thesecondaryreturntemperature(S2)isusedformonitoring.The
pressuremeasuring(S7)isusedtoactivateanalarmiftheactual
pressureishigherorlowerthanthechosensettings.
WhentheA266.9isusedinanECLComfort310,aconnected
floworenergymeterbasedonM-bussignalcanlimittheflowor
energytoasetmaximumvalue.Furthermorethelimitationcanbe
inrelationtotheoutdoortemperature.Typically,thelowerthe
outdoortemperature,thehighertheacceptedflow/power.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
DHW(circuit2):
IfthemeasuredDHWtemperature(S4)islowerthanthedesired
DHWtemperature,themotorizedcontrolvalve(M1)isopened
graduallyandviceversa.IfthedesiredDHWtemperaturecannot
bereached,theheatingcircuitcanbeclosedgraduallytoallow
moreenergytotheDHWcircuit.
ThereturntemperatureS6canmeasure,formonitoringpurpose,
thereturntemperatureonthesecondaryside.Analternative
positionforS6canbeinthereturnontheprimarysideinorderto
limitthereturntemperaturetoafixedvalue.
TypicalA266.9application:
M1,M2=3–point/0–10V
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
ECL210/296
ElectroniccontrollerECLComfort210,296or310
/310
S1
S2
Outdoortemperaturesensor
(Optional)Returntemperaturesensor,circuit1,for
monitoring
S3
S4
S5
S6
Flowtemperaturesensor,circuit1
DHWflowtemperaturesensor,circuit2
(Optional)Returntemperaturesensor,circuit1
(Optional)Returntemperaturesensor,secondaryside,
circuit2.Alternativeposition:Return,primaryside
S7
S8
P1
P2
M1
M2
A1
V1
(Optional)Pressuretransmitter,circuit1
(Optional)Alarminput
Circulationpump,DHW,circuit2
Circulationpump,heating,circuit1
Motorizedcontrolvalve,circuit2
Motorizedcontrolvalve,circuit1
Alarm
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
V2
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredDHWtemperature).
IfthedesiredDHWtemperaturecannotbereached,theheating
circuitcanbeclosedgraduallytoallowmoreenergytotheDHW
circuit.
Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.
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OperatingGuideECLComfort210/296/310,applicationA266
A266.9,ingeneral:
AlarmA1(=relay4)canbeactivated:
•ifthetemperatureatS3exceedsanalarmvalue
•ifthepressureatS7isnotinsideanacceptablepressurerange
•ifthealarminputS8isactivated
IfthetemperatureatS3exceedsthealarmvalue'Max.flowT',the
circulationpumpP2isswitchedOFFafterelapseofthe'Delay' .
P2isswitchedONagainwhenthetemperatureatS3getsbelow
alarmvalue.
WhenthesubtypeA266.9hasbeenuploaded,theECLComfort
controllerstartsinscheduledmode.
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OperatingGuideECLComfort210/296/310,applicationA266
TheapplicationA266.10isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.Theflowtemperaturesensor(S3)isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredroomtemperature).
InSavingmodetheheatingcanbereducedorswitchedofftotally.
Themotorizedcontrolvalve(M2)isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
Thereturntemperature(S5)canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Thecirculationpump,P2,isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thesecondaryreturntemperature(S2)isusedformonitoring.
Aconnectedfloworenergymeterbasedonpulses(S7)canlimitthe
floworenergytoasetmaximumvalue.Furthermorethelimitation
canbeinrelationtotheoutdoortemperature.Typically,thelower
theoutdoortemperature,thehighertheacceptedflow/power.
WhentheA266.10isusedinanECLComfort310theflow/energy
signalcanalternativelycomeasanM-bussignal.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
DHW(circuit2):
IfthemeasuredDHWtemperature(S4)islowerthanthedesired
DHWtemperature,themotorizedcontrolvalve(M1)isopened
graduallyandviceversa.IfthedesiredDHWtemperaturecannot
bereached,theheatingcircuitcanbeclosedgraduallytoallow
moreenergytotheDHWcircuit.
ThereturntemperatureS6canmeasure,formonitoringpurpose,
thereturntemperatureonthesecondaryside.Analternative
positionforS6canbeinthereturnontheprimarysideinorderto
limitthereturntemperaturetoafixedvalue.
TypicalA266.10application:
M1,M2=3–point/0–10V
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
ECL210/296
ElectroniccontrollerECLComfort210,296or310
/310
S1
S2
Outdoortemperaturesensor
(Optional)Returntemperaturesensor,circuit1,for
monitoring
S3
S4
S5
S6
Flowtemperaturesensor,circuit1
DHWflowtemperaturesensor,circuit2
(Optional)Returntemperaturesensor,circuit1
(Optional)Returntemperaturesensor,secondaryside,
circuit2.Alternativeposition:Return,primaryside
S7
S8
P1
P2
M1
M2
A1
V1
(Optional)Flow/energymeter(pulsesignal)
(Optional)Alarminput
Circulationpump,DHW,circuit2
Circulationpump,heating,circuit1
Motorizedcontrolvalve,circuit2
Motorizedcontrolvalve,circuit1
Alarm
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
V2
Motorizedcontrolvalve(0–10V)
(ECLComfort310+ECA32only)
Bymeansofaweekschedule,theDHWcircuitcanbein‘Comfort’
or‘Saving’mode(twovaluesforthedesiredDHWtemperature).
IfthedesiredDHWtemperaturecannotbereached,theheating
circuitcanbeclosedgraduallytoallowmoreenergytotheDHW
circuit.
Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.
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A266.10,ingeneral:
AlarmA1(=relay4)canbeactivated:
•ifthetemperatureatS3exceedsanalarmvalue
•ifthealarminputS8isactivated
IfthetemperatureatS3exceedsthealarmvalue'Max.flowT',the
circulationpumpP2isswitchedOFFafterelapseofthe'Delay' .
P2isswitchedONagainwhenthetemperatureatS3getsbelow
alarmvalue.
WhenthesubtypeA266.10hasbeenuploaded,theECLComfort
controllerstartsinscheduledmode.
A266,ingeneral:
UptotwoRemoteControlUnits,ECA30/31canbeconnectedto
oneECLcontrollerinordertocontroltheECLcontrollerremotely.
Exerciseofcirculationpumpsandcontrolvalveinperiodswithout
heatingdemandcanbearranged.
AdditionalECLComfortcontrollerscanbeconnectedviatheECL
485businordertoutilizecommonoutdoortemperaturesignal,
timeanddatesignals.TheECLcontrollersintheECL485system
canworkinmaster-slavesystem.
Unusedinputcan,bymeansofanoverrideswitch,beusedto
overridethescheduletoafixed'Comfort'or'Saving'mode.
ModbuscommunicationtoaSCADAsystemcanbeestablished.
TheM-busdata(ECLComfort310)canfurthermorebetransferred
totheModbuscommunication.
AlarmA1(=relay4)canbeactivated:
•ifatemperaturesensororitsconnectiondisconnects/short
circuits.(See:Commoncontrollersettings>System>Raw
inputoverview).
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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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.
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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2.5.2Electricalconnections24Va.c.
SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.
Maximumloadratings:
Relayterminals
Triac(=electronic
relay)terminals
4(2)A/24Va.c.
(4Aforohmicload,2Afor
inductiveload)
1A/24Va.c.
Donotconnect230Va.c.poweredcomponentstoa24Va.c.power
suppliedcontrollerdirectly.Useauxilliaryrelays(K)toseparate230
Va.c.from24Va.c.
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2.5.3Electricalconnections,safetythermostats,ingeneral
SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.
WhenSTisactivatedbyahightemperature,thesafetycircuitinthe
motorizedcontrolvalveclosesthevalveimmediately.
WhenST1isactivatedbyahightemperature(theTRtemperature),the
motorizedcontrolvalveisclosedgradually.Atahighertemperature
(theSTtemperature),thesafetycircuitinthemotorizedcontrolvalve
closesthevalveimmediately.
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2.5.4Electricalconnections,Pt1000temperaturesensorsandsignals
SeetheInstallationGuide(deliveredwiththeapplicationkey)for
sensorandinputconnections.
Sensor
S1
S2
S3
S4
S5Returntemperaturesensor
(S5)
S6
(S6)
S7
S8
Description
Outdoortemperaturesensor*
A266.1,A266.2:
Roomtemperaturesensor**
Alternative:ECA30/31
A266.9,A266.10:
Returntemperaturesensor
(heating,secondaryside)
Flowtemperaturesensor***
(heating)
Flowtemperaturesensor***
(DHW)
(heating)
A266.2:
Returntemperaturesensor,
alternativepositions
A266.1,A266.9,A266.10:
Returntemperaturesensor
(DHW)
A266.2:
Supplytemperaturesensor
A266.9,A266.10:
Returntemperaturesensor,
alternativeposition
A266.1,A266.2,A266.10:
Flow/heatmeter(pulsesignal)
A266.9:
Pressuretransmitter,0-10Vor
4-20mA
A266.2:
Flowswitch
A266.9,A266.10:
Alarmcontact/switch
Recommended
type
ESMT
A266.1,A266.2:
ESM-10
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
*
Iftheoutdoortemperaturesensorisnotconnectedorthe
cableisshort-circuited,thecontrollerassumesthatthe
outdoortemperatureis0(zero)°C.
**
Onlyforroomtemperaturesensorconnection.Theroom
temperaturesignalcanalsobeavailablefromaRemote
ControlUnit(ECA30/31).SeetheInstallationGuide
(deliveredwiththeapplicationkey)forspecificconnections.
***
Theflowtemperaturesensormustalwaysbeconnected
inordertohavethedesiredfunctionality.Ifthesensoris
notconnectedorthecableisshort-circuited,themotorized
controlvalvecloses(safetyfunction).
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Connectionofflowmeter
SeetheInstallationGuide(deliveredwiththeapplicationkey).
Connectionofflowswitchoralarmcontact/switch
ThealarmcontactactsasaNormallyClosed(NC)contact.The
set-upcanbechangedtoreactonaNormallyOpen(NO)contact.
SeeCircuit1>MENU>Alarm>Digital>Alarmvalue:
0=AlarmforNOcontact
1=AlarmforNCcontact
Connectionofpressuretransmitter
ScaleforconversionofvoltagetopressureissetintheECLComfort.
Thepressuretransmitterispoweredwith12-24Vd.c.
Outputtypes:0-10Vor4-20mA.
4-20mAsignalisconvertedtoa2-10Vsignalbymeansofa500
ohm(0,5W)resistor.
Wirecrosssectionforsensorconnections:Min.0.4mm².
Totalcablelength:Max.200m(allsensorsincl.internalECL485
communicationbus).
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).
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2.5.5Electricalconnections,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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2.5.6Electricalconnections,master/slavesystems
Thecontrollercanbeusedasmasterorslaveinmaster/slave
systemsviatheinternalECL485communicationbus(2xtwisted
paircable).
TheECL485communicationbusisnotcompatiblewiththeECL
businECLComfort110,200,300and301!
Totalcablelength:Max.200m(allsensorsincl.internalECL485
communicationbus).
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).
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
2.5.7Electricalconnections,communication
Electricalconnections,Modbus
ECLComfort210:Non-galvanicisolatedModbusconnections
ECLComfort296:GalvanicisolatedModbusconnections
ECLComfort310:GalvanicisolatedModbusconnections
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MaximumrecommendedlengthoftheECL485bus:
200-81m=119m
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2.5.8Electricalconnections,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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