Danfoss A231, A331 Operating guide
OperatingGuide
ECLComfort210/296/310,applicationA231/
A331
1.0TableofContents
1.0TableofContents...............................................1
1.1Importantsafetyandproductinformation.....................2
2.0Installation........................................................6
2.1Beforeyoustart.....................................................6
2.2Identifyingthesystemtype......................................15
2.3Mounting...........................................................16
2.4Placingthetemperaturesensors................................20
2.5Electricalconnections.............................................22
2.6InsertingtheECLApplicationKey..............................31
2.7Checklist............................................................38
2.8Navigation,ECLApplicationKeyA231/A331................39
3.0Dailyuse.........................................................45
3.1Howtonavigate...................................................45
3.2Understandingthecontrollerdisplay..........................46
3.3Ageneraloverview:Whatdothesymbolsmean?...........49
3.4Monitoringtemperaturesandsystem
components........................................................50
3.5Influenceoverview................................................51
3.6Manualcontrol.....................................................52
3.7Schedule............................................................53
4.0Settingsoverview............................................54
5.0Settings...........................................................56
5.1IntroductiontoSettings..........................................56
5.2Flowtemperature..................................................57
5.3Returnlimit.........................................................62
5.4Flow/powerlimit.................................................66
5.5Optimization........................................................70
5.6Controlparameters................................................76
5.7Pumpcontrol.......................................................79
5.8Refillwater..........................................................82
5.9Application.........................................................87
5.10Alarm................................................................92
5.11Alarmoverview....................................................96
6.0Commoncontrollersettings..............................97
6.1Introductionto‘Commoncontrollersettings’................97
6.2Time&Date.........................................................98
6.3Holiday..............................................................99
6.4Inputoverview...................................................101
6.5Log.................................................................102
6.6Outputoverride..................................................103
6.7Keyfunctions.....................................................104
6.8System.............................................................106
7.0Miscellaneous................................................113
7.1ECA30/31setupprocedures.................................113
7.2Overridefunction................................................121
7.3Severalcontrollersinthesamesystem......................124
7.4Frequentlyaskedquestions....................................127
7.5Definitions........................................................131
7.6Type(ID6001),overview.......................................135
7.7Automatic/manualupdateoffirmware.....................136
7.8ParameterIDoverview..........................................137
©Danfoss|2021.02AQ000086469805en-010501|1
ECLComfort210/296/310,applicationA231/A331
1.1Importantsafetyandproductinformation
1.1.1Importantsafetyandproductinformation
ThisInstallationGuideisassociatedwithECLApplicationKeyA231
(ordercodeno.087H3805).
TheA231Keycontainstwosetsofapplications:oneset(A231.1/
A231.2)andanotherset(A331.1/A331.2).
SeetheInstallationGuide(deliveredwiththeapplicationkey)for
applicationexamplesandelectricalconnections.
Thedescribedfunctionsarerealizedin:
•ECLComfort210forbasicsolutions
•ECLComfort296forbasicsolutions,inclusiveM-bus,Modbus
andEthernet(Internet)communication
•ECLComfort310foradvancedsolutions,inclusiveM-bus,
ModbusandEthernet(Internet)communication.
TheextensionmoduleECA32canbeusedforextendingthe
numbersofinputsformonitoringviatheECLPortal.Eachinputcan
beconfiguredasPt1000,0-10Voltordigital.
TheApplicationKeyA231complieswithECLComfort210/310
controllersasoffirmwareversion1.11.
TheApplicationKeyA231alsocomplieswithECLComfort296
controllersasoffirmwareversion1.58.
Thefirmware(controllersoftware)versionisvisibleatstart-upof
thecontrollerandin‘Commoncontrollersettings’in‘System’ .Up
totwoRemoteControlUnits,ECA30orECA31,canbeconnected
forremotemonitoringandsetting.
ECLPortal,internet-basedconnection,allowsECL296,310and
310Btobemonitoredandcontrolledremotelyviastandard
Internetbrowsers(forexampleInternetExplorer,GoogleChrome
andSafari).
TogetherwiththeECLComfort310,theadditionalInternalI/O
moduleECA32(ordercodeno.087H3202)canbeusedforextra
datacommunicationtoSCADA:
•Temperature,Pt1000(default)
•0-10voltsignals
•Digitalinput
Theset-upofinputtypecanbedonebymeansoftheDanfoss
Software"ECLTool".
Navigation:Danfoss.com>Serviceandsupport>Downloads>
Tools>Heating>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)
2|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
TheB-typeshavenodisplayanddial.TheB-typesareoperatedby
meansoftheRemoteControlunitECA30/31:
•ECA30(087H3200)
•ECA31(087H3201)
BasepartsforECLComfort:
•forECLComfort210,230volt(087H3220)
•forECLComfort296,230volt(087H3240)
•forECLComfort310,230voltand24volt(087H3230)
•forECLComfort310,230voltand24volt(087H3230)
Extensionmodule(tobeinsertedintothebasepartofECL310):
•ECA32(087H3202)
AdditionaldocumentationforECLComfort210,296and310,
modulesandaccessoriesisavailableonhttp://heating.danfoss.com/
orhttp://store.danfoss.com.
DocumentationforECLPortal:Seehttp://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"
AQ000086469805en-010501
©Danfoss|2021.02|3
ECLComfort210/296/310,applicationA231/A331
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.
4|©Danfoss|2021.02
12174
IfanIDdescriptionismentionedmorethanonce,itmeansthatthere
arespecialsettingsforoneormoresystemtypes.Itwillbemarked
withthesystemtypeinquestion(e.g.12174-A266.9).
1
-
2
Circuit2Parameterno.
174
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.
xstandsforcircuit/parametergroup.
DisposalNote
Thissymbolontheproductindicatesthatitmaynot
bedisposedofashouseholdwaste.
Itmustbehandedovertotheapplicabletake-back
schemefortherecyclingofelectricalandelectronic
equipment.
•Disposeoftheproductthroughchannelsprovided
forthispurpose.
•Complywithalllocalandcurrentlyapplicablelaws
andregulations.
AQ000086469805en-010501
©Danfoss|2021.02|5
ECLComfort210/296/310,applicationA231/A331
2.0Installation
2.1Beforeyoustart
TheapplicationA231.1isveryflexible.Thesearethebasic
principles:
Heating:
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein
‘Comfort’or‘Saving’mode(twodifferenttemperaturevaluesfor
desiredroomtemperature).
ThemotorizedcontrolvalvesM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
ThereturntemperatureS5tothedistrictheatingsupplyshouldnot
betoohigh.Ifso,thedesiredflowtemperaturecanbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingofthe
motorizedcontrolvalve.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Furthermore,thereturntemperaturelimitationcanbedependent
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
ThecirculationpumpinquestionisONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thestaticpressureonthesecondaryside(consumerside)can1)
bemeasuredasa0-10Vsignal(fromapressuretransmitter)or
2)beaswitchsignalfromapressureswitch.Incaseofatoolow
pressure,therefillwaterfunctionwillsupplementwithwaterfrom
thesupplyside.
TypicalA231.1application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S3
Flowtemperaturesensor
S5Returntemperaturesensor
S7
Differentialpressureswitch
S8
Pressuretransmitterorpressureswitch
P1
Circulationpump
P2
Circulationpump
P3
Refillwaterpump
M1
Motorizedcontrolvalve
V1
ON/OFFvalve,refillwatervalve
A1
Relayoutput,alarm
WhentheECLComfortcontrolleroperatesasaslave,onlytherefill
watervalveiscontrolled.Themastercontrolsacommonrefill
waterpumpfortheentiresystem.
6|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
ApplicationA231.1ingeneral:
ThecirculationpumpsP1andP2workinshiftaccordingtoa
schedule.Onepumpisusedassparepumpandtheotherpump
isworking.Incaseofmalfunction(missingdifferentialpressure)
ofonepump,theotherpumpwilltakeover.Analarmwillbe
generatedandthedefectivepumpcanbeinspected/repaired.
Alarm(relay4)canbeactivatedif:
•Theactualflowtemperaturediffersfromthedesiredflow
temperature.
•Theactivatedcirculationpumpdoesnotgenerateapressure
difference.
•Therefillwaterfunctiondoesnotgenerateapressurewithin
apresettime.
TypicalA231.1application:
AQ000086469805en-010501
©Danfoss|2021.02|7
ECLComfort210/296/310,applicationA231/A331
TheapplicationA231.2isveryflexible.Thesearethebasic
principles:
Heating:
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Thesupplytemperature(S2)isusedto1)controltheS3
temperatureinrelationtotheS2temperatureor2)maximizethe
limitofthedesiredflowtemperature.
Thefactorysetting,wherethesupplytemperature(S2)determines
thedesiredflowtemperature,doesnotchangethedesiredflow
temperatureaccordingto‘Comfort’or‘Saving’mode.
However,ifthesupplytemperature(S2)determinesamax.
limitationofthedesiredflowtemperature,the‘Comfort’and
‘Saving’modewillhavetwodifferenttemperaturevaluesfor
desiredroomtemperature.
ThemotorizedcontrolvalveM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
ThereturntemperatureS5tothedistrictheatingsupplyshouldnot
betoohigh.Ifso,thedesiredflowtemperaturecanbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingofthe
motorizedcontrolvalve.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Furthermore,thereturntemperaturelimitationcanbedependent
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
ThecirculationpumpinquestionisONatheatdemandoratfrost
protection.
TypicalA231.2application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S2
Supplyflowtemperaturesensor
S3
Flowtemperaturesensor
S5Returntemperaturesensor
S7
Differentialpressureswitch
S8
Pressuretransmitterorpressureswitch
P1
Circulationpump
P2
Circulationpump
P3
Refillwaterpump
M1
Motorizedcontrolvalve
V1
ON/OFFvalve,refillwatervalve
A1
Relayoutput,alarm
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thestaticpressureonthesecondaryside(consumerside)can1)
bemeasuredasa0-10Vsignal(fromapressuretransmitter)or
2)beaswitchsignalfromapressureswitch.Incaseofatoolow
pressure,therefillwaterfunctionwillsupplementwithwaterfrom
thesupplyside.
WhentheECLComfortcontrolleroperatesasaslave,onlytherefill
watervalveiscontrolled.Themastercontrolsacommonrefill
waterpumpfortheentiresystem.
8|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
ApplicationA231.2ingeneral:
ThecirculationpumpsP1andP2workinshiftaccordingtoa
schedule.Onepumpisusedassparepumpandtheotherpump
isworking.Incaseofmalfunction(missingdifferentialpressure)
ofonepump,theotherpumpwilltakeover.Analarmwillbe
generatedandthedefectivepumpcanbeinspected/repaired.
Alarm(relay4)canbeactivatedif:
•Theactualflowtemperaturediffersfromthedesiredflow
temperature.
•Theactivatedcirculationpumpdoesnotgenerateapressure
difference.
•Therefillwaterfunctiondoesnotgenerateapressurewithin
apresettime.
TypicalA231.2application:
AQ000086469805en-010501
©Danfoss|2021.02|9
ECLComfort210/296/310,applicationA231/A331
TheapplicationA331.1isveryflexible.Thesearethebasic
principles:
Heating:
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Bymeansofaweekschedule,theheatingcircuitcanbein
‘Comfort’or‘Saving’mode(twodifferenttemperaturevaluesfor
desiredroomtemperature).
ThemotorizedcontrolvalvesM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
ThereturntemperatureS5tothedistrictheatingsupplyshouldnot
betoohigh.Ifso,thedesiredflowtemperaturecanbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingofthe
motorizedcontrolvalve.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Furthermore,thereturntemperaturelimitationcanbedependent
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
ThecirculationpumpinquestionisONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thestaticpressureonthesecondaryside(consumerside)can1)be
measuredasa0-10Vsignal(fromapressuretransmitter)or2)bea
switchsignalfromapressureswitch.Incaseofatoolowpressure,
therefillwaterfunctionwillsupplementwithwaterfromthe
supplyside.Thetworefillwaterpumpsareoperatedalternately.
WhentheECLComfortcontrolleroperatesasaslave,onlytherefill
watervalveiscontrolled.Themastercontrolsacommonrefill
waterpumpfortheentiresystem.
TypicalA331.1application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S3
Flowtemperaturesensor
S5Returntemperaturesensor
S7
Differentialpressureswitch
S8
Pressuretransmitterorpressureswitch
S9
Alarminput
S10
Pressuretransmitter(formonitoringonly)
P1
Circulationpump
P2
Circulationpump
P3
Refillwaterpump
P5
Refillwaterpump
M1
Motorizedcontrolvalve
V1
ON/OFFvalve,refillwatervalve
A1
Relayoutput,alarm
10|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
ApplicationA331.1ingeneral:
ThecirculationpumpsP1andP2workinshiftaccordingtoa
schedule.Onepumpisusedassparepumpandtheotherpump
isworking.Incaseofmalfunction(missingdifferentialpressure)
ofonepump,theotherpumpwilltakeover.Analarmwillbe
generatedandthedefectivepumpcanbeinspected/repaired.
Alarm(relay4)canbeactivatedif:
•Theactualflowtemperaturediffersfromthedesiredflow
temperature.
•Theactivatedcirculationpumpdoesnotgenerateapressure
difference.
•Therefillwaterfunctiondoesnotgenerateapressurewithin
apresettime.
•TheuniversalalarminputsS9isactivated.
ModbuscommunicationtoaSCADAsystemcanbeestablished.
M-buscommunicationenablesconnectiontofloworenergymeter.
Thecontrollercanlimitthefloworenergytoasetmaximumbut
alsoinrelationtotheoutdoortemperature.
Furthermore,theM-busdatacanbetransferredtotheModbus
communication.
TypicalA331.1application:
AQ000086469805en-010501
©Danfoss|2021.02|11
ECLComfort210/296/310,applicationA231/A331
TheapplicationA331.2isveryflexible.Thesearethebasic
principles:
Heating:
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.
Thesupplytemperature(S2)isusedto1)controltheS3
temperatureinrelationtotheS2temperatureor2)maximizethe
limitofthedesiredflowtemperature.
Thefactorysetting,wherethesupplytemperature(S2)determines
thedesiredflowtemperature,doesnotchangethedesiredflow
temperatureaccordingto‘Comfort’or‘Saving’mode.
However,ifthesupplytemperature(S2)determinesamax.
limitationofthedesiredflowtemperature,the‘Comfort’and
‘Saving’modewillhavetwodifferenttemperaturevaluesfor
desiredroomtemperature.
ThemotorizedcontrolvalvesM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
ThereturntemperatureS5tothedistrictheatingsupplyshouldnot
betoohigh.Ifso,thedesiredflowtemperaturecanbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingofthe
motorizedcontrolvalve.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Furthermore,thereturntemperaturelimitationcanbedependent
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
ThecirculationpumpinquestionisONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thestaticpressureonthesecondaryside(consumerside)can1)be
measuredasa0-10Vsignal(fromapressuretransmitter)or2)bea
switchsignalfromapressureswitch.Incaseofatoolowpressure,
therefillwaterfunctionwillsupplementwithwaterfromthe
supplyside.Thetworefillwaterpumpsareoperatedalternately.
TypicalA331.2application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S2
Supplyflowtemperaturesensor
S3
Flowtemperaturesensor
S5Returntemperaturesensor
S7
Differentialpressureswitch
S8
Pressuretransmitterorpressureswitch
S9
Alarminput
S10
Pressuretransmitter(formonitoringonly)
P1
Circulationpump
P2
Circulationpump
P3
Refillwaterpump
P5
Refillwaterpump
M1
Motorizedcontrolvalve
V1
ON/OFFvalve,refillwatervalve
A1
Relayoutput,alarm
WhentheECLComfortcontrolleroperatesasaslave,onlytherefill
watervalveiscontrolled.Themastercontrolsacommonrefill
waterpumpfortheentiresystem.
12|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
ApplicationA331.2ingeneral:
ThecirculationpumpsP1andP2workinshiftaccordingtoa
schedule.Onepumpisusedassparepumpandtheotherpump
isworking.Incaseofmalfunction(missingdifferentialpressure)
ofonepump,theotherpumpwilltakeover.Analarmwillbe
generatedandthedefectivepumpcanbeinspected/repaired.
Alarm(relay4)canbeactivatedif:
•Theactualflowtemperaturediffersfromthedesiredflow
temperature.
•Theactivatedcirculationpumpdoesnotgenerateapressure
difference.
•Therefillwaterfunctiondoesnotgenerateapressurewithin
apresettime.
•TheuniversalalarminputsS9isactivated.
ModbuscommunicationtoaSCADAsystemcanbeestablished.
M-buscommunicationenablesconnectiontofloworenergymeter.
Thecontrollercanlimitthefloworenergytoasetmaximumbut
alsoinrelationtotheoutdoortemperature.
Furthermore,theM-busdatacanbetransferredtotheModbus
communication.
TypicalA331.2application:
AQ000086469805en-010501
©Danfoss|2021.02|13
ECLComfort210/296/310,applicationA231/A331
A231,ingeneral:
Offsetadjustment
Ameasuredtemperaturecanbeoffsetadjusted,ifneeded.
(Navigation:MENU>Commoncontroller>System>Sensoroffset)
Applicationupload
Theapplicationuploadprocedureisthefollowingafterhaving
powereduptheECLComfortcontroller:
1.Inserttheapplicationkey
2.Selectlanguage
3.Selectsubtype(theInstallationGuideshowssubtypes)
4.SetTimeandDate
TheECLComfortcontrollerinstallstheapplication,initializesand
restarts.Outputrelaysareactivated/de-activated(click-sounds
fromthiscanbeheard).Thisalsomeansthat,forexample,
circulationpumpscanbeswitchedONandOFFshortly.
Commissioning
WhentheA231/A331applicationhasbeenuploadedtheECL
ComfortcontrollerstartsinManualmode.Thiscanbeusedto
verifycorrectconnectionsoftemperature,pressureandflow
sensors.Alsoverifyingthecontrolledcomponents(valveactuators,
pumpsetc.)forcorrectfunctionalitycanbedone.
Theapplicationkeyisdeliveredwithfactorysettings.
Dependingonsystemtype,itmightbenecessarytochangesome
factorysettingsindividuallyinordertooptimizethefunctionality.
Theapplicationkeymustbeinsertedinordertochangesettings.
Power-down/power-up
WhenthepowersupplytotheECLComfortcontrolleris
disconnected(power-down),theoutputrelaysgotode-activated
position.
Thismeansthat,forexample,circulationpumpscanbeswitched
ON.
SeetheelectricalconnectiondiagramsintheInstallationGuide.
Allrelaycontactsareshowninde-activatedsituation.Somerelay
contactsareclosed,somerelaycontactsareopen.
WhenthepowersupplytotheECLComfortcontrolleris
re-established(power-up),theoutputrelaysareactivated/
de-activated(click-soundsfromthiscanbeheard).Thisalsomeans
that,forexample,circulationpumpscanbeswitchedONandOFF
shortly.
Important:
•Setthecorrectrunningtime"Mrun"oftheMotorizedControl
ValveM1.(Circuit1>MENU>Settings>Controlparameters
>Mrun).
14|©Danfoss|2021.02
Thecontrollerispre-programmedwithfactorysettingsthatareshown
inthe‘ParameterIDoverview’appendix.
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
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.
AQ000086469805en-010501
©Danfoss|2021.02|15
ECLComfort210/296/310,applicationA231/A331
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.
16|©Danfoss|2021.02
Topreventinjuriestopersonsorthecontroller,thecontrollerhasto
besecurelylockedintothebase.Forthispurpose,pressthelocking
pinintothebaseuntilaclickisheardandthecontrollernolonger
canberemovedfromthebase.
Ifthecontrollerisnotsecurelylockedintothebasepart,thereisarisk
thatthecontrollerduringoperationcanunlockfromthebaseandthe
basewithterminals(andalsothe230Va.c.connections)areexposed.
Topreventinjuriestopersons,alwaysmakesurethatthecontroller
issecurelylockedintoitsbase.Ifthisisnotthecase,thecontroller
shouldnotbeoperated!
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
Mountingonawall
Mountthebasepartonawallwithasmoothsurface.Establishthe
electricalconnectionsandpositionthecontrollerinthebasepart.
Securethecontrollerwiththelockingpin.
MountingonaDINrail(35mm)
MountthebasepartonaDINrail.Establishtheelectrical
connectionsandpositionthecontrollerinthebasepart.Secure
thecontrollerwiththelockingpin.
Theeasywaytolockthecontrollertoitsbaseorunlockitistousea
screwdriveraslever.
DismountingtheECLComfortcontroller
Inordertoremovethecontrollerfromthebasepart,pulloutthe
lockingpinbymeansofascrewdriver.Thecontrollercannowbe
removedfromthebasepart.
Theeasywaytolockthecontrollertoitsbaseorunlockitistousea
screwdriveraslever.
AQ000086469805en-010501
©Danfoss|2021.02|17
ECLComfort210/296/310,applicationA231/A331
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.
18|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
2.3.3MountingtheinternalI/OmoduleECA32
MountingoftheinternalI/OmoduleECA32
TheECA32module(ordercodeno.087H3202)mustbeinserted
intotheECLComfort310/310Bbasepartforadditionalinputand
outputsignalsinrelevantapplications.
TheconnectionbetweentheECLComfort310/310BandECA32
isa10-pole(2x5)connector.Theconnectionisautomatically
establishedwhentheECLComfort310/310Bisplacedonthe
basepart.
AQ000086469805en-010501
©Danfoss|2021.02|19
ECLComfort210/296/310,applicationA231/A331
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.
20|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
Pt1000temperaturesensor(IEC751B,1000Ω/0°C)
Relationshipbetweentemperatureandohmicvalue:
AQ000086469805en-010501
©Danfoss|2021.02|21
ECLComfort210/296/310,applicationA231/A331
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).
22|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
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.
AQ000086469805en-010501
©Danfoss|2021.02|23
ECLComfort210/296/310,applicationA231/A331
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.
24|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
2.5.3Electricalconnections,Pt1000temperaturesensorsandsignals
A231.1/A231.2:
Sensor
S1
S2
S3
S5Returntemperaturesensor
S7
S8Pressuretransmitter
*
**
***
Description
Outdoortemperature
sensor*
Supplyflowtemperature
sensor**
Flowtemperaturesensor***
Differentialpressureswitch
(0–10V)
orpressureswitch
Iftheoutdoortemperaturesensorisnotconnectedorthe
cableisshort-circuited,thecontrollerassumesthatthe
outdoortemperatureis0(zero)°C.
OnlyforapplicationA231.2.
Theflowtemperaturesensormustalwaysbeconnected
inordertohavethedesiredfunctionality.Ifthesensoris
notconnectedorthecableisshort-circuited,themotorized
controlvalvecloses(safetyfunction).
Recommendedtype
ESMT
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
Connectionofdifferentialpressureswitch,S7
ThedrawingshowsconnectiontoECL210,butisalsovalidfor
connectiontoECL296andECL310.
Connectionofapressuretransmitterwith0-10Voutput,S8
AQ000086469805en-010501
©Danfoss|2021.02|25
ECLComfort210/296/310,applicationA231/A331
Connectionofapressureswitch,S8
ThedrawingshowsconnectiontoECL210,butisalsovalidfor
connectiontoECL296andECL310.
A331.1/A331.2:
Sensor
S1
S2
S3
S5Returntemperaturesensor
S7
S8Pressuretransmitter
S9
S10Pressuretransmitter
*
**
***
Description
Outdoortemperature
sensor*
Supplyflowtemperature
sensor**
Flowtemperaturesensor***
Differentialpressureswitch
(0–10V)
orpressureswitch
Alarmswitch
(0–10V)
Iftheoutdoortemperaturesensorisnotconnectedorthe
cableisshort-circuited,thecontrollerassumesthatthe
outdoortemperatureis0(zero)°C.
OnlyforapplicationA331.2.
Theflowtemperaturesensormustalwaysbeconnected
inordertohavethedesiredfunctionality.Ifthesensoris
notconnectedorthecableisshort-circuited,themotorized
controlvalvecloses(safetyfunction).
Recommendedtype
ESMT
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
ESM-11/ESMB/
ESMC/ESMU
Connectionofdifferentialpressureswitch,S7
26|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
Connectionofapressuretransmitterwith0-10Voutput,S8
Connectionofapressuretransmitterwith0-10Voutput,S10
Connectionofapressureswitch,S8
Connectionofalarmswitch,S9
Wirecrosssectionforsensorconnections:Min.0.4mm².
Totalcablelength:Max.200m(allsensorsincl.internalECL485
communicationbus)
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).
AQ000086469805en-010501
©Danfoss|2021.02|27
ECLComfort210/296/310,applicationA231/A331
2.5.4Electricalconnections,ECA30/31
Terminal
ECL310
Terminal
ECA30/
Description
Type
(recomm.)
31
30
31
322
333
*
Afteranexternalroomtemperaturesensorhasbeenconnected,
4
Twistedpair
1
Twistedpair
4
Ext.roomtemperature
sensor*
5
Cable2x
twistedpair
ESM-10
ECA30/31mustberepowered.
ThecommunicationtotheECA30/31mustbesetupintheECL
Comfortcontrollerin'ECAaddr.'
TheECA30/31mustbesetupaccordingly.
AfterapplicationsetuptheECA30/31isreadyafter2–5min.A
progressbarintheECA30/31isdisplayed.
ECAinformationmessage:
‘Applicationreq.newerECA’:
Thesoftware(firmware)ofyourECAdoesnotcomplywiththe
software(firmware)ofyourECLComfortcontroller.Pleasecontact
yourDanfosssalesoffice.
Someapplicationsdonotcontainfunctionsrelatedtoactualroom
temperature.TheconnectedECA30/31willonlyfunctionasremote
control.
Totalcablelength:Max.200m(allsensorsincl.internalECL485
communicationbus).
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).
28|©Danfoss|2021.02
AQ000086469805en-010501
ECLComfort210/296/310,applicationA231/A331
2.5.5Electricalconnections,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
2.5.6Electricalconnections,communication
Electricalconnections,Modbus
ECLComfort210:Non-galvanicisolatedModbusconnections
ECLComfort296:GalvanicisolatedModbusconnections
ECLComfort310:GalvanicisolatedModbusconnections
MaximumrecommendedlengthoftheECL485bus:
200-81m=119m
AQ000086469805en-010501
©Danfoss|2021.02|29
ECLComfort210/296/310,applicationA231/A331
2.5.7Electricalconnections,communication
Electricalconnections,M-bus
ECLComfort210:Notimplemented
ECLComfort296:Onboard,non-galvanicisolated.Max.cable
length50m.
ECLComfort310:Onboard,non-galvanicisolated.Max.cable
length50m.
30|©Danfoss|2021.02
AQ000086469805en-010501
Loading...