Danfoss A275, A375 Operating guide

OperatingGuide

ECLComfort210/296/310,applicationA275/A375

1.0TableofContents

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

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

2.0Installation........................................................7

2.1Beforeyoustart.....................................................7

2.2Identifyingthesystemtype......................................29

2.3Mounting...........................................................45

2.4Placingthetemperaturesensors................................48

2.5Electricalconnections.............................................50

2.6InsertingtheECLApplicationKey..............................59

2.7Checklist............................................................66

2.8Navigation,ECLApplicationKeyA275.........................67

3.0Dailyuse.........................................................79

3.1Howtonavigate...................................................79

3.2Understandingthecontrollerdisplay..........................80

3.3Ageneraloverview:Whatdothesymbolsmean?...........84

3.4Monitoringtemperaturesandsystem

components........................................................85

3.5Influenceoverview................................................87

3.6Manualcontrol.....................................................88

3.7Schedule............................................................89

4.0Settingsoverview............................................90

5.0Settings...........................................................93

5.1IntroductiontoSettings..........................................93

5.2Flow(boiler)temperature........................................94

5.3Tanktemperature..................................................98

5.4Roomlimit........................................................101

5.5Returnlimit.......................................................103

5.6Optimization......................................................108

5.7Boiler...............................................................114

5.8Controlparameters..............................................122

5.9Application.......................................................127

5.10Alarm..............................................................135

5.11Alarmoverview..................................................142

5.12Anti-bacteria......................................................143

6.0Commoncontrollersettings............................145

6.1Introductionto‘Commoncontrollersettings’..............145

6.2Time&Date.......................................................146

6.3Holiday............................................................147

6.4Inputoverview...................................................149

6.5Log.................................................................150

6.6Outputoverride..................................................151

6.7Keyfunctions.....................................................152

6.8System.............................................................154

7.0Miscellaneous................................................161

7.1ECA30/31setupprocedures.................................161

7.2Overridefunction................................................169

7.3Severalcontrollersinthesamesystem......................172

7.4Frequentlyaskedquestions....................................175

7.5Definitions........................................................179

7.6Type(ID6001),overview.......................................183

7.7Automatic/manualupdateoffirmware.....................184

7.8ParameterIDoverview..........................................185

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OperatingGuideECLComfort210/296/310,applicationA275/A375

1.1Importantsafetyandproductinformation

1.1.1Importantsafetyandproductinformation

ThisOperatingGuideisassociatedwithECLApplicationKeyA275
(ordercodeno.087H3814).

TheECLapplicationkeyA275containstwosetsofapplications:

•A275(subtypesA275.1,A275.2,A275.3)

•A375(subtypesA375.1,A375.2,A375.3,A375.4,A375.5).A375
subtypesonlyruninECL310.

SubtypesA275.1,A275.2andA275.3arefor1-burnersolutions.
SubtypesA375.1,A375.2andA375.3areformultipleburner
solutions.
SubtypesA375.4andA375.5arefor1-burnersolutions,inclusive
0-10Voltcontrolofburnertemperature.

Thefunctionscanberealizedin:

•ECLComfort210(A275)forsimplesolutionsor

•ECLComfort296(A275)forsimplesolutions,buthaving
advancedcommunication,suchasM-bus,Modbusand
Ethernet(Internet)communicationor

•ECLComfort310(A275/A375)foradvancedsolutions,e.g.
M-bus,ModbusandEthernet(Internet)communication.

FloworpowerlimitationviaM-busisnotusedinA275/A375.

TheapplicationA275complieswithECLComfortcontroller210
and310asofsoftwareversion1.11(visibleatstart-upofthe
controllerandin‘Commoncontrollersettings’in‘System’).

TheApplicationKeyA275alsocomplieswithECLComfort296
controllersasoffirmwareversion1.58.

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

ECLPortal,Internetbasedconnection,allowsECL296,310and
310Btobemonitoredandcontrolledremotelyviastandard
Internetbrowsers(forexampleInternetExplorer,GoogleChrome
andSafari).

SeetheInstallationGuide(deliveredwiththeapplicationkey)for
applicationexamplesandelectricalconnections.

AdditionaldocumentationforECLComfort210,296and310and
accessoriesareavailableonhttps://store.danfoss.com.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

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)

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/
orhttp://store.danfoss.com.

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

A275/A375navigationingeneral:

A275.1/A375.1/A375.4A275.2/A375.2A275.3/A375.3/A375.5

CircuitCircuitCircuit

11

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2

1

23

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Burnercontroloverview:

R2–R10=relaynos.inECL/ECA32

Seethesection‘Electricalconnections’formoredetailedinformation.

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,applicationA275/A375

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.

12174

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

1

-

2

Circuit2Parameterno.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

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,applicationA275/A375

2.0Installation

2.1Beforeyoustart

TheapplicationA275.1isveryflexible.Thesearethebasic
principles:

Heating(circuit1):

Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
theboilertemperature.ThedesiredboilertemperatureatS3is
calculatedintheECLcontroller,basedontheoutdoortemperature
(S1)andthedesiredroomtemperature.Thelowertheoutdoor
temperature,thehigherthedesiredboilertemperature.Theboiler
temperatureisalsotheflowtemperatureinthedirectconnected
heatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

TheburnerisswitchedONwhentheboilertemperatureis
lowerthanthedesiredboilertemperatureandswitchedOFF
whentheboilertemperatureishigherthanthedesiredboiler
temperature.AswitchingdifferencedeterminestheON/OFF
control.Furthermore,theboilerprotectionfunctionwillonly
switchONthecirculationpumpiftheboilertemperaturegets
aboveaminimumtemperature.AminimumON-timecanbesetfor
theburnerinordertoincreasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.

TypicalA275.1application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

S1

Outdoortemperaturesensor

S3

(mandatory)Boilertemperaturesensor

S5Returntemperaturesensor

S7

Roomtemperaturesensor/ECA30

P1

Circulationpump

B1Burner

A1

Alarm

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.

AQ042286456873en-010501

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

©Danfoss|2021.04|7

OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA275.2isveryflexible.Thesearethebasic
principles:

Heating(circuit1):

Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
theboilertemperature.ThedesiredboilertemperatureatS3is
calculatedintheECLcontroller,basedontheoutdoortemperature
(S1)andthedesiredroomtemperature.Thelowertheoutdoor
temperature,thehigherthedesiredboilertemperature.Theboiler
temperatureisalsotheflowtemperatureinthedirectconnected
heatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

TheburnerisswitchedONwhentheboilertemperatureis
lowerthanthedesiredboilertemperatureandswitchedOFF
whentheboilertemperatureishigherthanthedesiredboiler
temperature.AswitchingdifferencedeterminestheON/OFF
control.Furthermore,theboilerprotectionfunctionwillonly
switchONthecirculationpumpiftheboilertemperaturegets
aboveaminimumtemperature.AminimumON-timecanbesetfor
theburnerinordertoincreasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.

TypicalA275.2application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

S1

Outdoortemperaturesensor

S3

(mandatory)Boilertemperaturesensor

S5Returntemperaturesensor

S6

DHWtanktemperaturesensor

S7

Roomtemperaturesensor/ECA30

P1

Circulationpump,heating

B1Burner

P3

DHWheatingpump

A1

Alarm

8|©Danfoss|2021.04

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

A275.2,basicprinciples,continued:

DHW(circuit2):

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
DHWcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesfordesiredDHWtemperature).
IfthemeasuredDHWtemperature(S6)islowerthanthedesired
DHWtemperature,theDHWheatingprocedurestarts:

•ThecirculationpumpP1intheheatingcircuitisswitchedOFF

•TheDHWheatingpumpP3isswitchedON

•ThedesiredboilertemperatureatS3isincreased.

Thedesiredboilertemperatureistypically10-15degreeshigher
thanthedesiredDHWtemperature.

WhenthemeasuredDHWtemperature(S6)getshigherthanthe
desiredDHWtemperature,theDHWheatingpump(P3)isswitched
OFF.StartandstopdifferencesdeterminetheON/OFFcontrol.A
post-runtimecanbeset.

Ananti-bacteriafunctionisavailableforactivationontheselected
daysoftheweek.

TheDHWheatinghaspriority,i.e.pumpP3isONandpumpP1is
OFF.Iftheapplicationhasachangeovervalve(priorityvalve)for
theDHWheating,thecirculationpumpP1isstillONduringDHW
heating.

TypicalA275.2application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

S1

Outdoortemperaturesensor

S3

(mandatory)Boilertemperaturesensor

S5Returntemperaturesensor

S6

DHWtanktemperaturesensor

S7

Roomtemperaturesensor/ECA30

P1

Circulationpump,heating

B1Burner

P3

DHWheatingpump

A1

Alarm

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA275.3isveryflexible.Thesearethebasic
principles:

Heating(circuit1):

Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
theboilertemperature.ThedesiredboilertemperatureatS3is
calculatedintheECLcontroller,basedontheoutdoortemperature
(S1)andthedesiredroomtemperature.Thelowertheoutdoor
temperature,thehigherthedesiredboilertemperature.Theboiler
temperatureisalsotheflowtemperatureinthedirectconnected
heatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

TheburnerisswitchedONwhentheboilertemperatureis
lowerthanthedesiredboilertemperatureandswitchedOFF
whentheboilertemperatureishigherthanthedesiredboiler
temperature.AswitchingdifferencedeterminestheON/OFF
control.Furthermore,theboilerprotectionfunctionwillonly
switchONthecirculationpumpiftheboilertemperaturegets
aboveaminimumtemperature.AminimumON-timecanbesetfor
theburnerinordertoincreasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.

TypicalA275.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

S1

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

(mandatory)Boilertemperaturesensor,circuit1

S4

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S6

DHWtanktemperaturesensor

S7

Roomtemperaturesensor/ECA30,circuit1

S8

Roomtemperaturesensor/ECA30,circuit2

M2

Motorizedcontrolvalve,circuit2

P1

Circulationpump,circuit1

B1Burner

P3

DHWheatingpump,circuit3

P4

Circulationpump,circuit2

10|©Danfoss|2021.04

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

A275.3,basicprinciples,continued:

Heating(circuit2):

Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS4isthemost
importantsensor.ThedesiredflowtemperatureatS4iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

ThemotorizedcontrolvalveM2isopenedgraduallywhentheflow
temperature,S4,islowerthanthedesiredflowtemperatureand
viceversa.

ThedesiredflowtemperatureatS4willtypicallydeterminethe
desiredboilertemperature(S3).

Thereturntemperature(S2)canbelimited.Ifso,thedesiredflow
temperatureatS4canbedecreasedorincreased.

Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

TypicalA275.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Ifthemeasuredroomtemperature(measuredbyS8ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredflowtemperaturecanbeadjusted.

Thecirculationpump(P4)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalueoraDHWheatingpriorityispresent.

Listofcomponents:

S1

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

(mandatory)Boilertemperaturesensor,circuit1

S4

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S6

DHWtanktemperaturesensor

S7

Roomtemperaturesensor/ECA30,circuit1

S8

Roomtemperaturesensor/ECA30,circuit2

M2

Motorizedcontrolvalve,circuit2

P1

Circulationpump,circuit1

B1Burner

P3

DHWheatingpump,circuit3

P4

Circulationpump,circuit2

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

AQ042286456873en-010501

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OperatingGuideECLComfort210/296/310,applicationA275/A375

A275.3,basicprinciples,continued:

DHW(circuit3):

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
DHWcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesfordesiredDHWtemperature).
IfthemeasuredDHWtemperature(S6)islowerthanthedesired
DHWtemperature,theDHWheatingprocedurestarts:

•ThecirculationpumpP1intheheatingcircuitisswitchedOFF

•TheDHWheatingpumpP3isswitchedON

•ThedesiredboilertemperatureatS3isincreased.

Thedesiredboilertemperatureistypically10-15degreeshigher
thanthedesiredDHWtemperature.

WhenthemeasuredDHWtemperature(S6)getshigherthanthe
desiredDHWtemperature,theDHWheatingpump(P3)isswitched
OFF.StartandstopdifferencesdeterminetheON/OFFcontrol.A
post-runtimecanbeset.

Ananti-bacteriafunctionisavailableforactivationontheselected
daysoftheweek.

TheDHWheatinghaspriority,i.e.pumpP3isONandpumpP1is
OFF.Iftheapplicationhasachangeovervalve(priorityvalve)for
theDHWheating,thecirculationpumpP1isstillONduringDHW
heating.

TypicalA275.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

S1

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

(mandatory)Boilertemperaturesensor,circuit1

S4

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S6

DHWtanktemperaturesensor

S7

Roomtemperaturesensor/ECA30,circuit1

S8

Roomtemperaturesensor/ECA30,circuit2

M2

Motorizedcontrolvalve,circuit2

P1

Circulationpump,circuit1

B1Burner

P3

DHWheatingpump,circuit3

P4

Circulationpump,circuit2

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

ApplicationA275ingeneral:

UptotwoRemoteControlUnits,ECA30/31,canbeconnectedto
oneECLcontrollertocontroltheECLcontrollerremotely.
Exerciseofcirculationpumpsandcontrolvalveinperiodswithout
heatingdemandcanbearranged.
AdditionalECLComfortcontrollerscanbeconnectedviatheECL
485bustoutilizecommonoutdoortemperaturesignal,timeand
datesignals.
SeveralECLcontrollers,internallyconnectedviaECL485bus,work
inMaster/Slaveconnection.InaMaster/Slavesystemmaximum
2ECA30/31canbepresent.

Unusedinput(fromS7andup)can,bymeansofanoverride
switch,beusedtooverridethescheduletoafixed'Comfort'or
'Saving'mode.

Modbuscommunication(ECL296andECL310)toaSCADAsystem
canbeestablished.

ECLPortal,Internetbasedconnection,allowsECL296,310and
310Btobemonitoredandcontrolledremotelyviastandard
Internetbrowsers(forexampleInternetExplorer,GoogleChrome
andSafari).

Heat-meters:
Upto5heat-meterscanbeconnectedtotheM-busterminals(ECL
296/310).
DatacanbetransferredtotheSCADAsystemviaModbusandTCP/
IPtotheECLPortal.

ModbuscommunicationtoaSCADAsystemcanbeestablished.
TheM-busdata(ECLComfort296/310)canfurthermorebe
transferredtotheModbuscommunication.

Alarm,A275.1andA275.2:

AlarmA1(relayR4)andthealarmsymbol(

•ifatemperaturesensororitsconnectiondisconnects/
shortcircuits.

Alarm,A275.3:

Thealarmsymbol(

•iftheactualflowtemperatureatS4(heatingcircuit2),differs
fromthedesiredflowtemperature.

•ifatemperaturesensororitsconnectiondisconnects/
short-circuits.

)canbeactivated:

)canbeactivated:

AQ042286456873en-010501

©Danfoss|2021.04|13

OperatingGuideECLComfort210/296/310,applicationA275/A375

ApplicationA275ingeneral,continued:

Offsetadjustment

Ameasuredtemperaturecanbeoffsetadjusted,ifneeded.
(Navigation:MENU>Commoncontroller>System>Sensoroffset)

Inputconfiguration

Inputs(asfromS7andup),whicharenotpartoftheapplication
canbeconfiguredtobePt1000,0-10Volt,frequency(pulse
counter)ordigitalinput.ThisfeaturemakesitpossibleinECL296/
310tocommunicateextrasignals,suchastemperatures,pressures,
ON/OFFconditions,viaModbusandECLPortal.
TheconfigurationisdonebymeansoftheECLTool(freesoftware
fordownload)ordirectlyinadedicatedmenuintheECLPortalor
theconnectionforModbus(BMS/SCADA).

Applicationupload

Theapplicationuploadprocedureisthefollowingafterhaving
powereduptheECLComfortcontroller:

1.Inserttheapplicationkey

2.Selectlanguage,*1,*2

3.Selectsubtype(theInstallationGuideshowssubtypes)

4.SetTimeandDate

TheECLComfortcontrollerinstallstheapplication,initializesand
restarts.Outputrelaysareactivated/de-activated(click-sounds
fromthiscanbeheard).Thisalsomeansthat,forexample,
circulationpumpscanbeswitchedONandOFFshortly.

*1:Seealsosection"InsertingtheECLApplicationKey" .
*2:(ECLComfort310,24Volt)Iflanguagecannotbeselected,the
powersupplyisnota.c.(alternatingcurrent).

Commissioning

WhentheselectedapplicationhasbeenuploadedtheECLComfort
controllerstartsinManualmode.Thiscanbeusedtoverifycorrect
connectionsof,forexample,temperature,pressureandflow
sensors.Alsoverifyingthecontrolledcomponents(valveactuators,
pumps,burneretc.)forcorrectfunctionalitycanbedone.

Theapplicationkeyisdeliveredwithfactorysettings.
Dependingonsystemtype,itmightbenecessarytochangesome
factorysettingsindividuallyforoptimizingthefunctionality.

Theapplicationkeymustbeinsertedforchangingsettings.

Power-down/power-up

WhenthepowersupplytotheECLComfortcontrolleris
disconnected(power-down),theoutputrelaysgotode-activated
position.
Thismeansthat,forexample,circulationpumpsandburnercanbe
switchedON.
SeetheelectricalconnectiondiagramsintheInstallationGuide.
Allrelaycontactsareshowninde-activatedsituation.Somerelay
contactsareclosed,somerelaycontactsareopen.
WhenthepowersupplytotheECLComfortcontrolleris
re-established(power-up),theoutputrelaysareactivated/
de-activated(click-soundsfromthiscanbeheard).Thisalsomeans
that,forexample,circulationpumpsandburnercanbeswitched
ONandOFFshortly.

ImportantforA275.3:

•Setthecorrectrunningtime"Mrun"oftheMotorizedControl
ValveM2.(Circuit2>MENU>Settings>Controlparameters
>Mrun).

14|©Danfoss|2021.04

AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

Thecontrollerispre-programmedwithfactorysettingsthatareshown
inthe‘ParameterIDoverview’appendix.

AQ042286456873en-010501

©Danfoss|2021.04|15

OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA375.1isveryflexible.Thesearethebasic
principles:

TheapplicationsA375.1/A375.2/A375.3canON/OFFcontrolup
to8burnersteps.

InapplicationA375.1thefirst4burnerstepsarecontrolledby
relaysintheECL310.Thenext,max.4burnersteps,arecontrolled
byrelaysintheextensionmoduleECA32(placedinthebasepart
oftheECL310).

Heating(circuit1):

Typically,thecommonboilertemperatureisadjustedaccordingto
yourrequirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
thecommonboilertemperature.Thedesiredboilertemperature
atS3iscalculatedintheECLcontroller,basedontheoutdoor
temperature(S1)andthedesiredroomtemperature.Thelowerthe
outdoortemperature,thehigherthedesiredboilertemperature.
Theboilertemperatureisalsotheflowtemperatureinthedirect
connectedheatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

ThefirstburnerstepisswitchedONwhenthecommonboiler
temperatureislowerthanthedesiredboilertemperature.The
controllerobservesthecommonboilertemperatureandswitches
ONthenextburnerstepifthecommonboilertemperaturedoes
notincreasesatisfactorily.TheswitchingOFFprocedureofburner
stepsisviceversa.AswitchingdifferencedeterminestheON/OFF
control.

Theburnerscanbecontrolledin:

•fixedsequence(example:Always1-2-3-4-5)or

•automaticrotatingsequence(example:Firstperiod:1-2-3-4-5,
secondperiod:2-3-4-5-1,thirdperiod:3-4-5-1-2andsoon)

•semi-automaticrotatingsequence(example:Firstperiod:1,
2-3-4-5,secondperiod:1,3-4-5-2,thirdperiod:1,4-5-2-3and
soon)

Furthermore,theboilerprotectionfunctionwillswitchONthe
circulationpumpwhentheboilertemperaturegetsabovea
minimumvalue.AminimumON-timecanbesetfortheburnerin
ordertoincreasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

TypicalA375.1application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310
ECA32

S1

S3

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

(mandatory)Commonboilertemperaturesensor

S5Returntemperaturesensor

S7

(S10)

P1

Roomtemperaturesensor/ECA30

(Externaltemperaturecontrol,notillustrated)

Circulationpump

B1–B8Burner1...8

A1

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

Boilersequencerotation/shifttakesplaceatmidnight.

Alarm

Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA

30)doesnotequalthedesiredroomtemperature,thedesired

boilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.

Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.

16|©Danfoss|2021.04

AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA375.2isveryflexible.Thesearethebasic
principles:

TheapplicationsA375.1/A375.2/A375.3canON/OFFcontrolup
to8burnersteps.

InapplicationA375.2thefirst2burnerstepsarecontrolledby
relaysintheECL310.Thenext,max.4burnersteps,arecontrolled
byrelaysintheextensionmoduleECA32(placedinthebasepartof
theECL310).Thelast,max.2burnerstepsarecontrolledbytriacs
intheECL310.Auxillaryrelaysmustbeconnectedtothetriacs.

Heating(circuit1):

Typically,thecommonboilertemperatureisadjustedaccordingto
yourrequirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
thecommonboilertemperature.Thedesiredboilertemperature
atS3iscalculatedintheECLcontroller,basedontheoutdoor
temperature(S1)andthedesiredroomtemperature.Thelowerthe
outdoortemperature,thehigherthedesiredboilertemperature.
Theboilertemperatureisalsotheflowtemperatureinthedirect
connectedheatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

ThefirstburnerstepisswitchedONwhenthecommonboiler
temperatureislowerthanthedesiredboilertemperature.The
controllerobservesthecommonboilertemperatureandswitches
ONthenextburnerstepifthecommonboilertemperaturedoes
notincreasesatisfactorily.TheswitchingOFFprocedureofburner
stepsisviceversa.AswitchingdifferencedeterminestheON/OFF
control.

Theburnerscanbecontrolledin:

•fixedsequence(example:Always1-2-3-4-5)or

•automaticrotatingsequence(example:Firstperiod:1-2-3-4-5,
secondperiod:2-3-4-5-1,thirdperiod:3-4-5-1-2andsoon)

•semi-automaticrotatingsequence(example:Firstperiod:1,
2-3-4-5,secondperiod:1,3-4-5-2,thirdperiod:1,4-5-2-3and
soon)

Furthermore,theboilerprotectionfunctionwillswitchONthe
circulationpumpwhentheboilertemperaturegetsabovea
minimumvalue.AminimumON-timecanbesetfortheburnerin
ordertoincreasetheboiler'sefficiency.

TypicalA375.2application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

S3

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

(mandatory)Commonboilertemperaturesensor

S5Returntemperaturesensor

S6

S7

(S10)

P1

DHWtanktemperaturesensor

Roomtemperaturesensor/ECA30

(Externaltemperaturecontrol,notillustrated)

Circulationpump,heating

B1–B8Burner1...8

P3

A1

DHWheatingpump

Alarm

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA

30)doesnotequalthedesiredroomtemperature,thedesired

boilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.

Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.

AQ042286456873en-010501

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

Boilersequencerotation/shifttakesplaceatmidnight.

©Danfoss|2021.04|17

OperatingGuideECLComfort210/296/310,applicationA275/A375

A375.2,basicprinciples,continued:

DHW(circuit2):

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
DHWcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesfordesiredDHWtemperature).

IfthemeasuredDHWtemperature(S6)islowerthanthedesired
DHWtemperature,theDHWheatingprocedurestarts:

•ThecirculationpumpP1intheheatingcircuitisswitchedOFF

•TheDHWheatingpumpP3isswitchedON

•ThedesiredboilertemperatureatS3isincreased.

Thedesiredboilertemperatureistypically10-15degreeshigher
thanthedesiredDHWtemperature.

WhenthemeasuredDHWtemperature(S6)getshigherthanthe
desiredDHWtemperature,theDHWheatingpump(P3)isswitched
OFF.StartandstopdifferencesdeterminetheON/OFFcontrol.A
post-runtimecanbeset.

TheDHWcirculationpump(P4)hasaweekscheduleforupto3
ONperiodsperday.

Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.

TheDHWheatingcanhavepriority,i.e.pumpP3isONandpump
P1isOFF.Iftheapplicationhasachangeovervalve(priorityvalve)
fortheDHWheating,thecirculationpumpP1isstillONduring
DHWheating.

TypicalA375.2application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

S3

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

(mandatory)Commonboilertemperaturesensor

S5Returntemperaturesensor

S6

S7

(S10)

P1

DHWtanktemperaturesensor

Roomtemperaturesensor/ECA30

(Externaltemperaturecontrol,notillustrated)

Circulationpump,heating

B1–B8Burner1...8

P3

A1

DHWheatingpump

Alarm

18|©Danfoss|2021.04

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA375.3isveryflexible.Thesearethebasic
principles:

TheapplicationsA375.1/A375.2/A375.3canON/OFFcontrolup
to8burnersteps.
InapplicationA375.3thefirst2burnerstepsarecontrolledby
relaysintheECL310.Thenext,max.4burnersteps,arecontrolled
byrelaysintheextensionmoduleECA32(placedinthebasepartof
theECL310).Thelast,max.2burnerstepsarecontrolledbytriacs
intheECL310.Auxillaryrelaysmustbeconnectedtothetriacs.

Heating(circuit1):

Typically,thecommonboilertemperatureisadjustedaccordingto
yourrequirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
thecommonboilertemperature.Thedesiredboilertemperature
atS3iscalculatedintheECLcontroller,basedontheoutdoor
temperature(S1)andthedesiredroomtemperature.Thelowerthe
outdoortemperature,thehigherthedesiredboilertemperature.
Theboilertemperatureisalsotheflowtemperatureinthedirect
connectedheatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

ThefirstburnerstepisswitchedONwhenthecommonboiler
temperatureislowerthanthedesiredboilertemperature.The
controllerobservesthecommonboilertemperatureandswitches
ONthenextburnerstepifthecommonboilertemperaturedoes
notincreasesatisfactorily.TheswitchingOFFprocedureofburner
stepsisviceversa.AswitchingdifferencedeterminestheON/OFF
control.

Theburnerscanbecontrolledin:

•fixedsequence(example:Always1-2-3-4-5)or

•automaticrotatingsequence(example:Firstperiod:1-2-3-4-5,
secondperiod:2-3-4-5-1,thirdperiod:3-4-5-1-2andsoon)

•semi-automaticrotatingsequence(example:Firstperiod:1,
2-3-4-5,secondperiod:1,3-4-5-2,thirdperiod:1,4-5-2-3and
soon)

Furthermore,theboilerprotectionfunctionwillswitchONthe
circulationpumpwhentheboilertemperaturegetsabovea
minimumvalue.AminimumON-timecanbesetfortheburnerin
ordertoincreasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoo
high(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,
thedesiredboilertemperaturecanbedecreasedorincreased.
Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

TypicalA375.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Commonboilertemperaturesensor,circuit1

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S7

S8

(S10)

M2

P1

Roomtemperaturesensor/ECA30,circuit1

Roomtemperaturesensor/ECA30,circuit2

(Externaltemperaturecontrol,notillustrated)

Motorizedcontrolvalve,circuit2

Circulationpump,circuit1

B1–B8Burner1...8

P3

A1

DHWheatingpump,circuit3

Alarm

Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA

30)doesnotequalthedesiredroomtemperature,thedesired

boilertemperaturecanbeadjusted.
Thecirculationpump(P1)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.
Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.

AQ042286456873en-010501

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

Boilersequencerotation/shifttakesplaceatmidnight.

©Danfoss|2021.04|19

OperatingGuideECLComfort210/296/310,applicationA275/A375

A375.3,basicprinciples,continued:

Heating(circuit2):

Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS4isthemost
importantsensor.ThedesiredflowtemperatureatS4iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1).
Thelowertheoutdoortemperature,thehigherthedesiredflow
temperature.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedinordertoswitchOFF
theheating.

ThemotorizedcontrolvalveM2isopenedgraduallywhentheflow
temperature,S4,islowerthanthedesiredflowtemperatureand
viceversa.

ThedesiredflowtemperatureatS4willtypicallydeterminethe
desiredboilertemperature(S3).

Thereturntemperature(S2)canbelimited.Ifso,thedesiredflow
temperatureatS4canbedecreasedorincreased.

Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(measuredbyS8ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredflowtemperaturecanbeadjusted.

Thecirculationpump(P4)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalueoraDHWheatingpriorityispresent.

TypicalA375.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Commonboilertemperaturesensor,circuit1

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S7

S8

(S10)

M2

P1

Roomtemperaturesensor/ECA30,circuit1

Roomtemperaturesensor/ECA30,circuit2

(Externaltemperaturecontrol,notillustrated)

Motorizedcontrolvalve,circuit2

Circulationpump,circuit1

B1–B8Burner1...8

P3

A1

DHWheatingpump,circuit3

Alarm

20|©Danfoss|2021.04

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

A375.3,basicprinciples,continued:

DHW(circuit3):

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
DHWcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesfordesiredDHWtemperature).

IfthemeasuredDHWtemperature(S6)islowerthanthedesired
DHWtemperature,theDHWheatingprocedurestarts:

•ThecirculationpumpP1intheheatingcircuitisswitchedOFF

•TheDHWheatingpumpP3isswitchedON

•ThedesiredboilertemperatureatS3isincreased.

Thedesiredboilertemperatureistypically10-15degreeshigher
thanthedesiredDHWtemperature.

WhenthemeasuredDHWtemperature(S6)getshigherthanthe
desiredDHWtemperature,theDHWheatingpump(P3)isswitched
OFF.StartandstopdifferencesdeterminetheON/OFFcontrol.A
post-runtimecanbeset.

Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.

TheDHWheatingcanhavepriority,i.e.pumpP3isONandpump
P1isOFF.Iftheapplicationhasachangeovervalve(priorityvalve)
fortheDHWheating,thecirculationpumpP1isstillONduring
DHWheating.

TypicalA375.3application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithrelayoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Commonboilertemperaturesensor,circuit1

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor,circuit1

S7

S8

(S10)

M2

P1

Roomtemperaturesensor/ECA30,circuit1

Roomtemperaturesensor/ECA30,circuit2

(Externaltemperaturecontrol,notillustrated)

Motorizedcontrolvalve,circuit2

Circulationpump,circuit1

B1–B8Burner1...8

P3

A1

DHWheatingpump,circuit3

Alarm

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

AQ042286456873en-010501

©Danfoss|2021.04|21

OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA375.4isveryflexible.Thesearethebasic
principles:

Heating(circuit1):

Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlytomeasuretheboiler
temperature.ThedesiredboilertemperatureatS3iscalculatedin
theECLcontroller,basedontheoutdoortemperature(S1)andthe
desiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredboilertemperature.Theboilertemperature
isalsotheflowtemperatureinthedirectconnectedheatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedtoswitchOFFthe
heating.

Theburneris,viarelayoutput2,switchedONwhentheboiler
temperatureislowerthanthedesiredboilertemperatureand
switchedOFFwhentheboilertemperatureishigherthanthe
desiredboilertemperature.Aswitchingdifferencedeterminesthe
ON/OFFcontrol.

Advancedboilercontrol:

1.A0-10VoltsignalfromtheinternalmoduleECA32canbe
appliedtotheboilerforsettingthedesiredboilertemperature.

2.A3-pointsignal,viaM3,canbeappliedtotheboilerforsetting
thedesiredboilertemperature.Itisrecommendedtoseparate
galvanicallytheECL'sM3outputfromtheboiler's3-pointinput.
Typically,thiscanbedonebymeansofSolid-Staterelays.

SeetheInstallationGuideforconnections.

TheboilerprotectionfunctionwillonlyswitchONthecirculation
pumpiftheboilertemperaturegetsaboveaminimum
temperature.AminimumON-timecanbesetfortheburnerto
increasetheboiler'sefficiency.
Thereturntemperature(S5)totheboilershouldnotbetoohigh
(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,the
desiredboilertemperaturecanbedecreasedorincreased.

Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TypicalA375.4application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.

AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

S3

ElectroniccontrollerECLComfort310

Internalextensionmodulewithanalogoutputs

Outdoortemperaturesensor

(mandatory)Boilertemperaturesensor

S5Returntemperaturesensor

S7

Roomtemperaturesensor/ECA30

S9Pressuresensor

P1

B1

V1

M3

A1

Circulationpump

Burner,ON/OFFcontrol

Burner,0-10Vtemperaturecontrol

(notillustrated)3-pointcontrolofboilertemperature

Alarm

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.

A375.4canalsoruntheinstallationslikeA275.1,ex.aandex.b.
ThedifferencebetweenA375.4andA275.1is:

•A375.4hasadvancedboilercontrol

•A375.4canmeasurepressureviatransmitterandgenerate
alarm

22|©Danfoss|2021.04

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OperatingGuideECLComfort210/296/310,applicationA275/A375

TheapplicationA375.5isveryflexible.Thesearethebasic
principles:

Heating(circuit1):

Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlytomeasuretheboiler
temperature.ThedesiredboilertemperatureatS3iscalculatedin
theECLcontroller,basedontheoutdoortemperature(S1)andthe
desiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredboilertemperature.Theboilertemperature
isalsotheflowtemperatureinthedirectconnectedheatingcircuit.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedtoswitchOFFthe
heating.

Theburneris,viarelayoutput2,switchedONwhentheboiler
temperatureislowerthanthedesiredboilertemperatureand
switchedOFFwhentheboilertemperatureishigherthanthe
desiredboilertemperature.Aswitchingdifferencedeterminesthe
ON/OFFcontrol.

Advancedboilercontrol:

1.A0-10VoltsignalfromtheinternalmoduleECA32canbe
appliedtotheboilerforsettingthedesiredboilertemperature.

2.A3-pointsignal,viaM3,canbeappliedtotheboilerforsetting
thedesiredboilertemperature.Itisrecommendedtoseparate
galvanicallytheECL'sM3outputfromtheboiler's3-pointinput.
Typically,thiscanbedonebymeansofSolid-Staterelays.

SeetheInstallationGuideforconnections.

TheboilerprotectionfunctionwillonlyswitchONthecirculation
pumpiftheboilertemperaturegetsaboveaminimum
temperature.AminimumON-timecanbesetfortheburnerto
increasetheboiler'sefficiency.

Thereturntemperature(S5)totheboilershouldnotbetoohigh
(condensingboiler)ortoolow(oilorgasfiredboiler).Ifso,the
desiredboilertemperaturecanbedecreasedorincreased.

Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.

Thecirculationpump(P1)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.

TypicalA375.5application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithanalogoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Boilertemperaturesensor

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor

S6

S7

S8

DHWtanktemperaturesensor

Roomtemperaturesensor/ECA30

Roomtemperaturesensor/ECA30,circuit2

S9Pressuresensor

P1

P3

P4

P5

B1

V1

M2

M3

A1

Circulationpump

DHWheatingpump

Circulationpump,circuit2

DHWcirculationpump

Burner,ON/OFFcontrol

Burner,0-10Vtemperaturecontrol

Motorizedcontrolvalve,circuit2

(notillustrated)3-pointcontrolofboilertemperature

Alarm

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

A375.5,basicprinciples,continued:

Heating(circuit2):

Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS4isthemost
importantsensor.ThedesiredflowtemperatureatS4iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
heatingcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesforthedesiredroomtemperature).In'Saving'
modea'Totalstop'functioncanbeselectedtoswitchOFFthe
heating.

ThemotorizedcontrolvalveM2isopenedgraduallywhentheflow
temperature,S4,islowerthanthedesiredflowtemperatureand
viceversa.

ThedesiredflowtemperatureatS4willtypicallydeterminethe
desiredboilertemperature(S3).

Thereturntemperature(S2)canbelimited.Ifso,thedesiredflow
temperatureatS4canbedecreasedorincreased.

Furthermore,thereturntemperaturelimitationcanbedependent
ontheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.

TypicalA375.5application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.

Ifthemeasuredroomtemperature(measuredbyS8ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredflowtemperaturecanbeadjusted.

Thecirculationpump(P4)isONatheatdemandoratfrost
protection.

TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalueoraDHWheatingpriorityispresent.

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithanalogoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Boilertemperaturesensor

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor

S6

S7

S8

DHWtanktemperaturesensor

Roomtemperaturesensor/ECA30

Roomtemperaturesensor/ECA30,circuit2

S9Pressuresensor

P1

P3

P4

P5

B1

V1

M2

M3

A1

Circulationpump

DHWheatingpump

Circulationpump,circuit2

DHWcirculationpump

Burner,ON/OFFcontrol

Burner,0-10Vtemperaturecontrol

Motorizedcontrolvalve,circuit2

(notillustrated)3-pointcontrolofboilertemperature

Alarm

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Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

A375.5,basicprinciples,continued:

DHW(circuit3):

Bymeansofaweekschedule(upto3‘Comfort’periods/day),the
DHWcircuitcanbein‘Comfort’or‘Saving’mode(twodifferent
temperaturevaluesfordesiredDHWtemperature).
IfthemeasuredDHWtemperature(S6)islowerthanthedesired
DHWtemperature,theDHWheatingprocedurestarts:

•ThecirculationpumpP1intheheatingcircuitisswitchedOFF

•TheDHWheatingpumpP3isswitchedON

•ThedesiredboilertemperatureatS3isincreased.

Thedesiredboilertemperatureistypically10-15degreeshigher
thanthedesiredDHWtemperature.

WhenthemeasuredDHWtemperature(S6)getshigherthanthe
desiredDHWtemperature,theDHWheatingpump(P3)isswitched
OFF.StartandstopdifferencesdeterminetheON/OFFcontrol.A
post-runtimecanbeset.

Ananti-bacteriafunctionisavailableforactivationontheselected
daysoftheweek.

TheDHWheatinghaspriority,i.e.pumpP3isONandpumpP1is
OFF.Iftheapplicationhasachangeovervalve(priorityvalve)for
theDHWheating,thecirculationpumpP1isstillONduringDHW
heating.

TypicalA375.5application:

*Pressurereliefvalve

Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.

A375.5canalsoruntheinstallationslikeA275.3,ex.a.-A275.3,
ex.g.

ThedifferenciesbetweenA375.5andA275.3are:

•A375.5hasadvancedboilercontrol

•A375.5hasalarmoutput(A1)

•A375.4canmeasurepressureviatransmitterandgenerate
alarm

Listofcomponents:

ECL310

ECA32

S1

ElectroniccontrollerECLComfort310

Internalextensionmodulewithanalogoutputs

Outdoortemperaturesensor

S2Returntemperaturesensor,circuit2

S3

S4

(mandatory)Boilertemperaturesensor

Flowtemperaturesensor,circuit2

S5Returntemperaturesensor

S6

S7

S8

DHWtanktemperaturesensor

Roomtemperaturesensor/ECA30

Roomtemperaturesensor/ECA30,circuit2

S9Pressuresensor

P1

P3

P4

P5

B1

V1

M2

M3

A1

Circulationpump

DHWheatingpump

Circulationpump,circuit2

DHWcirculationpump

Burner,ON/OFFcontrol

Burner,0-10Vtemperaturecontrol

Motorizedcontrolvalve,circuit2

(notillustrated)3-pointcontrolofboilertemperature

Alarm

Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

ApplicationA375ingeneral:

UptotwoRemoteControlUnits,ECA30/31,canbeconnectedto
oneECLcontrollertocontroltheECLcontrollerremotely.
Exerciseofcirculationpumpsandcontrolvalveinperiodswithout
heatingdemandcanbearranged.
AdditionalECLComfortcontrollerscanbeconnectedviatheECL
485bustoutilizecommonoutdoortemperaturesignal,timeand
datesignals.
SeveralECLcontrollers,internallyconnectedviaECL485bus,work
inMaster/Slaveconnection.InaMaster/Slavesystemmaximum
2ECA30/31canbepresent.

Unusedinput(fromS7andup)can,bymeansofanoverride
switch,beusedtooverridethescheduletoafixed'Comfort'or
'Saving'mode.

Modbuscommunication(ECL296andECL310)toaSCADAsystem
canbeestablished.

ECLPortal,Internetbasedconnection,allowsECL296,310and
310Btobemonitoredandcontrolledremotelyviastandard
Internetbrowsers(forexampleInternetExplorer,GoogleChrome
andSafari).

Heat-meters:
Upto5heat-meterscanbeconnectedtotheM-busterminals(ECL
296/310).
DatacanbetransferredtotheSCADAsystemviaModbusandTCP/
IPtotheECLPortal.

ModbuscommunicationtoaSCADAsystemcanbeestablished.
TheM-busdata(ECLComfort296/310)canfurthermorebe
transferredtotheModbuscommunication.

Alarm,A375:

AlarmA1(relayR6)andthealarmsymbol(

•ifatemperaturesensororitsconnectiondisconnects/
shortcircuits.

Alarm,A375.3andA375.5:

AlarmA1(relayR6)andthealarmsymbol(

•iftheactualflowtemperatureatS4(heatingcircuit2),differs
fromthedesiredflowtemperature.

Alarm,A375.4,A375.5:

AlarmA1(relayR6)andthealarmsymbol(

•ifthepressure,measuredbyS9,getshigherorlowerthanset
alarmvalues.

)canbeactivated:

)canbeactivated:

)canbeactivated:

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OperatingGuideECLComfort210/296/310,applicationA275/A375

ApplicationA375ingeneral,continued:

Offsetadjustment

Ameasuredtemperaturecanbeoffsetadjusted,ifneeded.
(Navigation:MENU>Commoncontroller>System>Sensoroffset)

Inputconfiguration

Inputs(asfromS7andup),whicharenotpartoftheapplication
canbeconfiguredtobePt1000,0-10Volt,frequency(pulse
counter)ordigitalinput.ThisfeaturemakesitpossibleinECL296/
310tocommunicateextrasignals,suchastemperatures,pressures,
ON/OFFconditions,viaModbusandECLPortal.
TheconfigurationisdonebymeansoftheECLTool(freesoftware
fordownload)ordirectlyinadedicatedmenuintheECLPortalor
theconnectionforModbus(BMS/SCADA).

Applicationupload

Theapplicationuploadprocedureisthefollowingafterhaving
powereduptheECLComfortcontroller:

1.Inserttheapplicationkey

2.Selectlanguage,*1,*2

3.Selectsubtype(theInstallationGuideshowssubtypes)

4.SetTimeandDate

TheECLComfortcontrollerinstallstheapplication,initializesand
restarts.Outputrelaysareactivated/de-activated(click-sounds
fromthiscanbeheard).Thisalsomeansthat,forexample,
circulationpumpscanbeswitchedONandOFFshortly.

*1:Seealsosection"InsertingtheECLApplicationKey" .
*2:(ECLComfort310,24Volt)Iflanguagecannotbeselected,the
powersupplyisnota.c.(alternatingcurrent).

Commissioning

WhentheselectedapplicationhasbeenuploadedtheECLComfort
controllerstartsinManualmode.Thiscanbeusedtoverifycorrect
connectionsof,forexample,temperature,pressureandflow
sensors.Alsoverifyingthecontrolledcomponents(valveactuators,
pumps,burneretc.)forcorrectfunctionalitycanbedone.
Theapplicationkeyisdeliveredwithfactorysettings.
Dependingonsystemtype,itmightbenecessarytochangesome
factorysettingsindividuallyforoptimizingthefunctionality.
Theapplicationkeymustbeinsertedforchangingsettings.

Power-down/power-up

WhenthepowersupplytotheECLComfortcontrolleris
disconnected(power-down),theoutputrelaysgotode-activated
position.
Thismeansthat,forexample,circulationpumpsandburnercanbe
switchedON.
SeetheelectricalconnectiondiagramsintheInstallationGuide.
Allrelaycontactsareshowninde-activatedsituation.Somerelay
contactsareclosed,somerelaycontactsareopen.
WhenthepowersupplytotheECLComfortcontrolleris
re-established(power-up),theoutputrelaysareactivated/
de-activated(click-soundsfromthiscanbeheard).Thisalsomeans
that,forexample,circulationpumpsandburnercanbeswitched
ONandOFFshortly.

ImportantforA375.3andA375.5:

•Setthecorrectrunningtime"Mrun"oftheMotorizedControl
ValveM2.(Circuit2>MENU>Settings>Controlparameters
>Mrun).

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Thecontrollerispre-programmedwithfactorysettingsthatareshown
inthe‘ParameterIDoverview’appendix.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

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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OperatingGuideECLComfort210/296/310,applicationA275/A375

A275applications:

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.1,examplea

BoilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

A275.1,exampleb

BoilerON/OFFcontrolforaheatingcircuit.Theboilercircuitisequippedwithalowlossheader.
Thecomponentmarkedwith*isapressurereliefvalve.

A275.2,examplea

BoilerON/OFFcontrolforaheatingandaDHWcircuit.OptionalDHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

AtDHWheatingP3isswitchedONandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHWtemperature.
P1isswitchedOFF.

SpecialsettingsfortypeA275.2,examplea:

Navigation:

DHWcircuit(circuit2)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

Pleasenote:
If'Ch.-o.valve/P'in12051issettoOFF,P3willbeswitchedonatDHWheating.Thedesiredboilertemperaturewillstillliea
numberofdegreesabovethedesiredDHWtemperatureandP1willremainswitchedON.

A275.2,exampleb

BoilerON/OFFcontrolforaheatingandaDHWcircuit.DHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

AtDHWheatingP3(changeovervalve)isactivatedandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHW
temperature.

P1iscontinuouslyswitchedON.

SpecialsettingsfortypeA275.2,exampleb:

IDno.:

12051

12053

Recommendedsetting:

ON

OFF

Navigation:

DHWcircuit(circuit2)

DHWheatingismanagedbychangeovervalveP3/M1:

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

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

30|©Danfoss|2021.04

IDno.:

12051

12053

Recommendedsetting:

OFF

OFF

AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.2,examplec

BoilerON/OFFcontrolforaheatingandaDHWcircuit.OptionalDHWpriority.Theboilercircuitisequippedwithalowlossheader.
Thecomponentmarkedwith*isapressurereliefvalve.

Thepumpintheboilercircuitisnotcontrolled.
AtDHWheatingP3isswitchedONandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHWtemperature.
P1isswitchedOFF.

SpecialsettingsfortypeA275.2,examplec:

Navigation:IDno.:

DHWcircuit(circuit2)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

Pleasenote:
If'Ch.-o.valve/P'in12051issettoOFF,P3willbeswitchedonatDHWheating.Thedesiredboilertemperaturewillstillliea
numberofdegreesabovethedesiredDHWtemperatureandP1remainswitchedON.

A275.2,exampled

BoilerON/OFFcontrolforaheatingandaDHWcircuit.DHWpriority.Theboilercircuitisequippedwithalowlossheader.
Thecomponentmarkedwith*isapressurereliefvalve.

Thepumpintheboilercircuitisnotcontrolled.
AtDHWheatingP3(changeovervalve)isactivatedandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHW

temperature.
P1isswitchedON.

SpecialsettingsfortypeA275.2,exampled:

12051

12053

Recommendedsetting:

ON

OFF

Navigation:

DHWcircuit(circuit2)

DHWheatingismanagedbychangeovervalveP3/M1:
MENU\Settings\Application:'Ch.-o.valve/P'

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

AQ042286456873en-010501

IDno.:

12051

12053

Recommendedsetting:

OFF

OFF

©Danfoss|2021.04|31

OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,examplea

BoilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).OptionalDHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Heatingcircuit2canalternativelybeafloorheatingcircuit.
AtDHWheatingP3isswitchedONandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHWtemperature.
P1isswitchedOFF .Heatingcircuit2canbeclosedduringDHWheating.

SpecialsettingsfortypeA275.3,examplea:
Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

Circuit2canbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'
***Set'OFF'whennottobeclosed,set'ON'whentobeclosed

DHWcircuit(circuit3)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

***

ON

OFF

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AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,exampleb

BoilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).PartlyDHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Heatingcircuit2canalternativelybeafloorheatingcircuit.
AtDHWheatingP3(changeovervalve)isactivatedandthedesiredboilertemperatureisanumberofdegreesabovethedesiredDHW

temperature.
P1iscontinuouslyswitchedON.
Heatingcircuit2canbeclosedduringDHWheating.

SpecialsettingsfortypeA275.3,exampleb:
Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'
Circuit2canbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'
***Set'OFF'whennottobeclosed,set'ON'whentobeclosed

DHWcircuit(circuit3)

DHWheatingismanagedbychangeovervalveP3/M1:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

***

OFF

OFF

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©Danfoss|2021.04|33

OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,examplec

BoilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).DHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Heatingcircuit2canalternativelybeafloorheatingcircuit.
AtDHWheating,P3(changeovervalve)isactivatedandthedesiredboilertemperatureisanumberofdegreesabovethedesiredDHW

temperature.
P1iscontinuouslyswitchedON.
Heatingcircuit2isclosedduringDHWheating.

SpecialsettingsfortypeA275.3,examplec:

Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

Circuit2mustbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'

DHWcircuit(circuit3)

DHWheatingismanagedbychangeovervalveP3/M1:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

ON

OFF

OFF

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AQ042286456873en-010501

OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,exampled

BoilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).OptionalDHWpriority.Themixingcircuit
(2)iscontrolledbymeansofa4-portmixingvalve

Thecomponentmarkedwith*isapressurereliefvalve.

Heatingcircuit2canalternativelybeafloorheatingcircuit.
AtDHWheatingP3isswitchedONandthedesiredboilertemperatureisanumberofdegreesabovethedesiredDHWtemperature.
P1isswitchedOFF.
Heatingcircuit2canbeclosedduringDHWheating.

SpecialsettingsfortypeA275.3,exampled:

Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

Circuit2canbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'
***Set'OFF'whennottobeclosed,set'ON'whentobeclosed

DHWcircuit(circuit3)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

***

ON

OFF

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,examplee

BoilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).OptionalDHWpriority.Theboiler
circuitisequippedwithalowlossheader.

Thecomponentmarkedwith*isapressurereliefvalve.

Thepumpintheboilercircuitisnotcontrolled.Heatingcircuit2canalternativelybeafloorheatingcircuit.
AtDHWheatingP3isswitchedONandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHWtemperature.
P1isswitchedOFF .Heatingcircuit2canbeclosedduringDHWheating.

SpecialsettingsfortypeA275.3,examplee:

Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

Circuit2canbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'
***Set'OFF'whennottobeclosed,set'ON'whentobeclosed

DHWcircuit(circuit3)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

***

ON

OFF

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,examplef

BoilerON/OFFcontrol,amixingcircuitcontrolandaDHWcircuitcontrol.OptionalDHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

AtDHWheatingP3isswitchedONandthedesiredboilertemperatureliesanumberofdegreesabovethedesiredDHWtemperature.
Heatingcircuit2canbeclosedduringDHWheating.

SpecialsettingsfortypeA275.3,examplef:

Navigation:IDno.:

Boilercircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

Circuit2canbeclosedduringtheDHWheatingprocess:
MENU\Settings\Application:‘DHWpriority'
***Set'OFF'whennottobeclosed,set'ON'whentobeclosed

DHWcircuit(circuit3)

DHWheatingismanagedbypumpP3:
MENU\Settings\Application:'Ch.-o.valve/P'

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

11017

12500

12052

13051

13053

Recommendedsetting:

3K**

ON

***

ON

OFF

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A275.3,exampleg

BoilerON/OFFcontrolforadirectheatingcircuit(1)andamixingcircuit(2).
Thecomponentmarkedwith*isapressurereliefvalve.

Heatingcircuit2canalternativelybeafloorheatingcircuit.

SpecialsettingsfortypeA275.3,exampleg:
Navigation:IDno.:

Heatingcircuit(circuit1)

Circuit1mustbeabletoreceiveaheatdemand(desiredflowtemperature)fromcircuit2:
MENU\Settings\Application:'Demandoffset'
**Thisvalueisaddedtotheheatdemandvaluefromcircuit2

Heatingcircuit(circuit2)

Circuit2mustbeabletosendaheatdemand(desiredflowtemperature)tocircuit1:
MENU\Settings\Application:'SenddesiredT'

11017

12500

Recommendedsetting:

3K**

ON

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A375applications:

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.1,examplea

Oneboilerwith2xburnerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

Fixedsequence:Burner1mustbeswitchedONbeforeburner2canbeswitchedON.
Burner1isactiveatlowheatdemand.Atincreasedheatdemandburner2isactivatedadditionally.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,examplea:

Navigation:IDno.:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

A375.1,exampleb

2xboilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

Rotatingsequence:Burner1isactivebeforeburner2.Nextdayburner2isactivebeforeburner1.
Oneburnerstepisactiveatlowheatdemand.Atincreasedheatdemand,thenextburnerstepisactivatedadditionally.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,exampleb:

Navigation:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

110723

110732

IDno.:

110720

Recommendedsetting:

Recommendedsetting:

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

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110732

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.1,examplec

Oneboilerwith2xburnerON/OFFcontrolforaheatingcircuit.Theboilercircuitisequippedwithalowlossheader.
Thecomponentmarkedwith*isapressurereliefvalve.

Thepumpintheboilerisnotcontrolled.
Fixedsequence:Burner1mustbeswitchedONbeforeburner2canbeswitchedON.
Burner1isactiveatlowheatdemand.Atincreasedheatdemandburner2isactivatedadditionally.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,examplec:

Navigation:IDno.:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

A375.1,exampled

2xboilerON/OFFcontrolforaheatingcircuit.Theboilercircuitisequippedwithalowlossheader.
Thecomponentmarkedwith*isapressurereliefvalve.

Thepumpsintheboilersarenotcontrolled.
Rotatingsequence:Burner1isactivebeforeburner2.Nextdayburner2isactivebeforeburner1.
Oneburnerstepisactiveatlowheatdemand.Atincreasedheatdemandthenextburnerstepisactivatedadditionally.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,exampled:

Navigation:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

110723

110732

IDno.:

110720

Recommendedsetting:

Recommendedsetting:

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

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110732

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.1,examplee

Twoboilerswith2xburnerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

Fixedsequenceforeachboiler:Burner1(3)mustbeswitchedONbeforeburner2(4)canbeswitchedON.
Rotatingsequencefortheboilers:Boiler1isactivebeforeboiler2.Nextdayboiler2isactivebeforeboiler1.
Burnerstepsareactivatedaccordingtoheatdemand.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,examplee:

Navigation:IDno.:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

A375.1,examplef

Upto4xboilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

Rotatingsequenceoftheboilers:Boiler1-2-3-4.Nextday:Boiler2-3-4-1.Followingday:Boiler3-4-1-2andsoon.

Burnerstepsareactivatedaccordingtoheatdemand.

Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,examplef:

Navigation:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

11072

11073

IDno.:

110720

Recommendedsetting:

4

4

Recommendedsetting:

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.1,exampleg

Upto8xboilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

TheextensionmoduleECA32isusedtocontrolboiler5,6,7and8.
Rotatingsequencefortheboilers:Boiler1-2-3-4-5-6-7-8.Nextday:Boiler2-3-4-5-6-7-8-1.Followingday:Boiler3-4-

5-6-7-8-1-2andsoon.
Burnerstepsareactivatedaccordingtoheatdemand.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,exampleg:

Navigation:IDno.:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

A375.1,exampleh

Upto8xboilerON/OFFcontrolforaheatingcircuit.Thefirstboiler(highefficiency)hashighestpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Thefirstboilercanbeaheatpump.
TheextensionmoduleECA32isusedtocontrolboiler5,6,7and8.
Sequencefortheboilers:Boiler1,2-3-4-5-6-7-8.Nextday:Boiler1,3-4-5-6-7-8-2.Followingday:Boiler1,4-5-6-7

-8-2-3andsoon.
Burnerstepsareactivatedaccordingtoheatdemand.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,exampleh:

Navigation:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

110720

110731....8

IDno.:

11072

Recommendedsetting:

Recommendedsetting:

1

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

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110731....8

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.1,exampleI

Upto8xboilerON/OFFcontrolforaheatingcircuit.Thefirsttwoboilers(highefficiency)havehighestpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Thefirsttwoboilerscanbeheatpumps
TheextensionmoduleECA32isusedtocontrolboiler5,6,7and8.
Sequencefortheboilers:Boiler1,2,3-4-5-6-7-8.Nextday:Boiler1,2,4-5-6-7-8-3.Followingday:Boiler1,2,5-6-7-8-3

-4andsoon.

Burnerstepsareactivatedaccordingtoheatdemand.
Thelastburnerstepcanbedisablediftheoutdoortemperatureishigherthanasetvalue.

SpecialsettingsfortypeA375.1,examplei:

Navigation:IDno.:

Heatingcircuit(circuit1)

Sequencetype(code)forcontrollingtheburners:
MENU\Settings\Boiler:'Sequencetype'

Numberoftotalburnersteps:
MENU\Settings\Boiler:‘Steps'

110722

110731....8

Recommendedsetting:

A375.2,examplea

Upto8xboilerON/OFFcontrolforaheatingcircuitandaDHWcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.

Theapplicationdrawingshowsageneralandbasicinstallation.
TheECLComfort310controllercontrolstheboilers1and2.TheextensionmoduleECA32controlsboiler3,4,5and6.TheECLComfort

310controllercontrolsboiler7and8viaauxillaryrelays.
Theburners/boilersarecontrolledasdescribedintheA375.1,examplesa-i.
TheDHWcircuitiscontrolledasdescribedintheA275.2examples.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

SeetheInstallationGuide(deliveredwiththeapplicationkey)forapplicationexamplesandelectricalconnections.

A375.3,examplea

Upto8xboilerON/OFFcontrolforadirectheatingcircuit(1),amixingcircuit(2)andaDHWcircuit(3).OptionalDHWpriority.
Thecomponentmarkedwith*isapressurereliefvalve.

Theapplicationdrawingshowsageneralandbasicinstallation.
TheECLComfort310controllercontrolstheboilers1and2.TheextensionmoduleECA32controlsboiler3,4,5and6.TheECLComfort

310controllercontrolsboiler7and8viaauxillaryrelays.
Themixingcircuit(2)iscontrolledasdescribedintheA275.3examples.
TheDHWcircuit(3)iscontrolledasdescribedintheA275.2examples.

A375.4,examplea

BoilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.
Inaddition,theboilercanbecontrolledbymeansofa0-10Voltsignal(fromECA32)forsettingtheboilertemperature.
Basedonameasuredpressure,S9,analarmcanbeactivated.

Settingsforpressurerelatedalarmarefound(Navigation):
Heatingcircuit(circuit1)\MENU\Alarm

A375.5,examplea

BoilerON/OFFcontrolforaheatingcircuit.
Thecomponentmarkedwith*isapressurereliefvalve.
Inaddition,theboilercanbecontrolledbymeansofa0-10Voltsignal(fromECA32)forsettingtheboilertemperature.
Basedonameasuredpressure,S9,analarmcanbeactivated.

Settingsforpressurerelatedalarmarefound(Navigation):
Heatingcircuit(circuit1)\MENU\Alarm

SpecialsettingsfortypeA375.5:SeespecialsettingsforA275.3,ex.a-A275.3,ex.g.

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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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2.4Placingthetemperaturesensors

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.

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Maximumloadratings:

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

Relayterminals

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

Triac(=electronic

0,2A/230Va.c.

relay)terminals

2.5.2Electricalconnections24Va.c.

SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.

Maximumloadratings:

Relayterminals

4(2)A/24Va.c.
(4Aforohmicload,2Afor
inductiveload)

Triac(=electronic

1A/24Va.c.

relay)terminals

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.

Theconnectiondiagramsshowvarioussolutions/examples:

Safetythermostat,1–stepclosing:
Motorizedcontrolvalvewithoutsafetyfunction

Safetythermostat,1–stepclosing:
Motorizedcontrolvalvewithsafetyfunction

Safetythermostat,2–stepclosing:
Motorizedcontrolvalvewithsafetyfunction

WhenSTisactivatedbyahightemperature,thesafetycircuitinthe
motorizedcontrolvalveclosesthevalveimmediately.

WhenST1isactivatedbyahightemperature(theTRtemperature),the
motorizedcontrolvalveisclosedgradually.Atahighertemperature
(theSTtemperature),thesafetycircuitinthemotorizedcontrolvalve
closesthevalveimmediately.

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2.5.4Electricalconnections,Pt1000temperaturesensorsandsignals

SeealsotheInstallationGuide(deliveredwiththeapplicationkey)
forapplicationspecificconnections.

A275:

Sensor/description

S1

Outdoortemperaturesensor*
A275.3:

S2

Returntemperaturesensor,
circuit2

S3

Boilertemperaturesensor**,
circuit1

A275.3:

S4

Flowtemperaturesensor**,
circuit2

S5Returntemperaturesensor,

circuit1
A275.2:

S6

DHWtanktemperaturesensor,
circuit2.
A275.3:
DHWtanktemperaturesensor,
circuit3.

S7

Roomtemperaturesensor***,
circuit1

A275.3:

S8

Roomtemperaturesensor***,
circuit2

*

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

**

Theboiler/flowtemperaturesensormustalwaysbe
connectedinordertohavethedesiredfunctionality.

•Iftheboilersensorisnotconnected,orthecableis
short-circuited,theboilerwillbeswitchedOFF(safety
function).

•Iftheflowsensorisnotconnected,orthecableis
short-circuited,themotorizedcontrolvalvecloses(safety
function).

***

Onlyforroomtemperaturesensorconnection.Theroom
temperaturesignalcanalsobeavailablefromaRemote
ControlUnit(ECA30/31).See'Electricalconnections,ECA
30/31'.

Type
(recomm.)

ESMT

ESM-11/ESMB/
ESMC/ESMU

ESMU/ESMB

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESM-10

ESM-10

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A375:

Sensor/description

S1

Outdoortemperaturesensor*
A375.3,A375.5:

S2

Returntemperaturesensor,
circuit2

S3

Boilertemperaturesensor**,
circuit1

A375.3,A375.5:

S4

Flowtemperaturesensor**,
circuit2

S5Returntemperaturesensor,

circuit1
A375.2:

S6

DHWtanktemperaturesensor,
circuit2.
A375.3,A375.5:
DHWtanktemperaturesensor,
circuit3.

S7

Roomtemperaturesensor***,
circuit1

A375.3,A375.5

S8

Roomtemperaturesensor***,
circuit2

A375.4,A375.5:

S9

Pressuretransmitter,0-10V.

S10

Voltagesignal(0–10V)for
externalcontrolofdesired
boilertemperature,circuit1.

Type
(recomm.)

ESMT

ESM-11/ESMB/
ESMC/ESMU

ESMU/ESMB

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESM-11/ESMB/
ESMC/ESMU

ESM-10

ESM-10

*

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

**

Theboiler/flowtemperaturesensormustalwaysbe
connectedinordertohavethedesiredfunctionality.

•Iftheboilersensorisnotconnected,orthecableis
short-circuited,theboilerwillbeswitchedOFF(safety
function).

•Iftheflowsensorisnotconnected,orthecableis
short-circuited,themotorizedcontrolvalvecloses(safety
function).

***

Onlyforroomtemperaturesensorconnection.Theroom
temperaturesignalcanalsobeavailablefromaRemote
ControlUnit(ECA30/31).See'Electricalconnections,ECA
30/31'.

SubtypesA375.1,A375.2andA375.3only:
Connectionofvoltagesignal(0–10V)forexternalcontrolof

desiredboilertemperature

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A375.4,A375.5

Connectionofpressuretransmitter.
SeetheInstallationGuide(deliveredwiththeapplicationkey).
ScaleforconversionofvoltagetopressureissetintheECLComfort
(navigation:Circuit1>MENU>Alarm>S9pressure).
Thepressuretransmitterispoweredwith12-24Vd.c.
Outputtype:0-10V.

2.5.5Electricalconnections,ECA30/31

Terminal
ECL

*

Afteranexternalroomtemperaturesensorhasbeenconnected,
ECA30/31mustberepowered.

ThecommunicationtotheECA30/31mustbesetupintheECL
Comfortcontrollerin'ECAaddr.'

TheECA30/31mustbesetupaccordingly.

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

Connectionofswitchforexternaloverride

Terminal
ECA30/31

30
31
322
333

4
1

4
5

Description

Twistedpair

Twistedpair

Ext.roomtemperature
sensor*

Type
(recomm.)

Cable2x
twistedpair

ESM-10

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Usinganinputforoverriderequiresavoltfreecontact/switch.

IfS1...S6ischosenasoverrideinput,theoverrideswitchmusthave
gold-platedcontacts.

IfS7...S16ischosenasoverrideinput,theoverrideswitchcanbea
standardcontact.

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

communicationbus)
Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).

Iftheactualapplicationcontainstwoheatingcircuits,itispossible
toconnectanECA30/31toeachcircuit.Theelectricalconnections
aredoneinparallel.

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

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

software(firmware)ofyourECLComfortcontroller.Pleasecontact
yourDanfosssalesoffice.

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

Cablelengthsofmorethan200mmaycausenoisesensibility(EMC).

Max.twoECA30/31canbeconnectedtoanECLComfortcontroller
ortomaster/slavesystemswithseveralECLComfortcontrollers.

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2.5.6Electricalconnections,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

Electricalconnections,Modbus

ECLComfort210:Non-galvanicisolatedModbusconnections
ECLComfort296:GalvanicisolatedModbusconnections
ECLComfort310:GalvanicisolatedModbusconnections

2.5.7Electricalconnections,communication

Electricalconnections,M-bus

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

MaximumrecommendedlengthoftheECL485bus:
200-81m=119m

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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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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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ApplicationKey:Situation1
Thecontrollerisnewfromthefactory,theECLApplicationKey

isnotinserted.

AnanimationfortheECLApplicationKeyinsertionisdisplayed.
InserttheApplicationKey.

ApplicationKeynameandVersionisindicated(example:A266
Ver.1.03).

IftheECLApplicationKeyisnotsuitableforthecontroller,a"cross"
isdisplayedovertheECLApplicationKey-symbol.

Action:Purpose:

Selectlanguage

Confirm
Selectapplication(subtype)

Somekeyshaveonlyoneapplication.

Confirmwith‘Yes’

Set'Time&Date'
Turnandpushthedialtoselectand
change'Hours' ,'Minutes','Date',
'Month'and'Year' .

Choose''Next'

Confirmwith‘Yes’

Goto‘Aut.daylight’
Choosewhether‘ Aut.daylight´*

shouldbeactiveornot

*‘Aut.daylight’istheautomaticchangeoverbetweensummer
andwintertime.

DependingonthecontentsoftheECLApplicationKey,procedure
AorBistakingplace:

A
TheECLApplicationkeycontainsfactorysettings:

Thecontrollerreads/transfersdatafromtheECLApplicationKey
toECLcontroller.

Examples:

YESorNO

Theapplicationisinstalled,andthecontrollerresetsandstartsup.

B
TheECLApplicationkeycontainschangedsystemsettings:

Pushthedialrepeatedly.

’NO’:

’YES*:

Ifthekeycontainsusersettings:

Pushthedialrepeatedly.

‘NO:

‘YES*:

*If‘YES’cannotbechosen,theECLApplicationKeydoesnot
containanyspecialsettings.

Choose‘Startcopying’andconfirmwith'Yes'.

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OnlyfactorysettingsfromtheECLApplicationKeywill
becopiedtothecontroller.

Specialsystemsettings(differingfromthefactory
settings)willbecopiedtothecontroller.

OnlyfactorysettingsfromtheECLApplicationKeywill
becopiedtothecontroller.

Specialusersettings(differingfromthefactorysettings)
willbecopiedtothecontroller.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

ApplicationKey:Situation2
Thecontrolleralreadyrunsanapplication.TheECLApplication

Keyisinserted,buttheapplicationneedstobechanged.

TochangetoanotherapplicationontheECLApplicationKey,the
currentapplicationinthecontrollermustbeerased(deleted).

BeawarethattheApplicationKeymustbeinserted.

Action:Purpose:

Choose‘MENU’inanycircuit

Confirm

Choosethecircuitselectoratthetop
rightcornerinthedisplay

Confirm

Choose‘Commoncontrollersettings’

Confirm

Choose‘Keyfunctions’

Confirm

Choose‘Eraseapplication’

Confirmwith‘Yes’

Thecontrollerresetsandisreadytobeconfigured.

Followtheproceduredescribedinsituation1.

Examples:

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ApplicationKey:Situation3
Acopyofthecontrollerssettingsisneededforconfiguring

anothercontroller.

Thisfunctionisused

•forsaving(backup)ofspecialuserandsystemsettings

•whenanotherECLComfortcontrollerofthesametype(210,
296or310)mustbeconfiguredwiththesameapplicationbut
user/systemsettingsdifferfromthefactorysettings.

HowtocopytoanotherECLComfortcontroller:

Action:Purpose:

Choose‘MENU’

Confirm

Choosethecircuitselectoratthetop
rightcornerinthedisplay

Confirm

Choose'Commoncontrollersettings'

Confirm

Goto‘Keyfunctions’

Confirm

Choose‘Copy’

Confirm

Choose‘To’ .
‘ECL’or‘KEY’willbeindicated.Choose
’ECL’orKEY’

Pushthedialrepeatedlytochoose
copydirection

Choose‘Systemsettings’or‘User
settings’

Pushthedialrepeatedlytochoose
‘Yes’or‘No’in‘Copy’ .Pushtoconfirm.

Choose‘Startcopying’
TheApplicationKeyorthecontroller

isupdatedwithspecialsystemoruser
settings.

Examples:

*

’ECL’or‘KEY’ .

**

‘NO’or‘YES’

*
‘ECL’:

‘KEY’:

**
‘NO’:

‘YES’:

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DatawillbecopiedfromtheApplicationKeytothe
ECLController.
DatawillbecopiedfromtheECLControllertothe
ApplicationKey.

ThesettingsfromtheECLcontrollerwillnotbecopied
totheApplicationKeyortotheECLComfortcontroller.
Specialsettings(differingfromthefactorysettings)will
becopiedtotheApplicationKeyortotheECLComfort
controller.IfYEScannotbechosen,therearenospecial
settingstobecopied.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Language

Atapplicationupload,alanguagemustbeselected.*
IfanotherlanguagethanEnglishisselected,theselectedlanguage
ANDEnglishwillbeuploadedintotheECLcontroller.
ThismakesserviceeasyforEnglishspeakingservicepeople,just
becausetheEnglishlanguagemenuscanbevisiblebychanging
theactualsetlanguageintoEnglish.
(Navigation:MENU>Commoncontroller>System>Language)

Iftheuploadedlanguageisnotsuitable,theapplicationmustbe
erased.UserandSystemsettingscanbesavedontheapplication
keybeforeerasing.
Afternewuploadwithpreferredlanguage,theexistingUserand
Systemsettingscanbeuploaded.

*)
(ECLComfort310,24Volt)Iflanguagecannotbeselected,the
powersupplyisnota.c.(alternatingcurrent).

2.6.2ECLApplicationKey,copyingdata

Generalprinciples

Whenthecontrollerisconnectedandoperating,youcancheck
andadjustallorsomeofthebasicsettings.Thenewsettingscan
bestoredontheKey.

Factorysettingscanalwaysberestored.

HowtoupdatetheECLApplicationKeyaftersettingshave
beenchanged?

AllnewsettingscanbestoredontheECLApplicationKey.

Howtostorefactorysettinginthecontrollerfromthe
ApplicationKey?

PleasereadtheparagraphconcerningApplicationKey,Situation
1:Thecontrollerisnewfromthefactory,theECLApplicationKey
isnotinserted.

HowtostorepersonalsettingsfromthecontrollertotheKey?

PleasereadtheparagraphconcerningApplicationKey,Situation3:
Acopyofthecontrollerssettingsisneededforconfiguringanother
controller

Asamainrule,theECLApplicationKeyshouldalwaysremainin
thecontroller.IftheKeyisremoved,itisnotpossibletochange
settings.

Makeanoteofnewsettingsinthe'Settingsoverview'table.

DonotremovetheECLApplicationKeywhilecopying.Thedataon
theECLApplicationKeycanbedamaged!

ItispossibletocopysettingsfromoneECLComfortcontrollerto
anothercontrollerprovidedthatthetwocontrollersarefromthesame
series(210or310).
Furthermore,whentheECLComfortcontrollerhasbeenuploaded
withanapplicationkey,minimumversion2.44,itispossibletoupload
personalsettingsfromapplicationkeys,minimumversion2.14.

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The“Keyoverview”doesnotinform—throughECA30/31—about
thesubtypesoftheapplicationkey.

Keyinserted/notinserted,description:

ECLComfort210/310,controllerversionslowerthan1.36:

-

Takeouttheapplicationkey;for20minutes
settingscanbechanged.

-

Powerupthecontrollerwithoutthe
applicationkeyinserted;for20minutes
settingscanbechanged.

ECLComfort210/310,controllerversions1.36andup:

-

Takeouttheapplicationkey;for20minutes
settingscanbechanged.

-

Powerupthecontrollerwithoutthe
applicationkeyinserted;settingscannotbe
changed.

ECLComfort296,controllerversions1.58andup:

-

Takeouttheapplicationkey;for20minutes
settingscanbechanged.

-

Powerupthecontrollerwithoutthe
applicationkeyinserted;settingscannotbe
changed.

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2.7Checklist

IstheECLComfortcontrollerreadyforuse?

Makesurethatthecorrectpowersupplyisconnectedtoterminals9and10(230Vor24V).

Makesurethecorrectphaseconditionsareconnected:
230V:Live=terminal9andNeutral=terminal10
24V:SP=terminal9andSN=terminal10

Checkthattherequiredcontrolledcomponents(actuator,pumpetc.)areconnectedtothecorrectterminals.

Checkthatallsensors/signalsareconnectedtothecorrectterminals(see'Electricalconnections').

Mountthecontrollerandswitchonthepower.

IstheECLApplicationKeyinserted(see'InsertingtheApplicationKey').

DoestheECLComfortcontrollercontainanexistingapplication(see'InsertingtheApplicationKey').

Isthecorrectlanguagechosen(see'Language'in'Commoncontrollersettings').

Isthetime&datesetcorrectly(see'Time&Date'in'Commoncontrollersettings').

Istherightapplicationchosen(see'Identifyingthesystemtype').

Checkthatallsettingsinthecontroller(see'Settingsoverview')aresetorthatthefactorysettingscomplywithyour
requirements.

Choosemanualoperation(see'Manualcontrol').Checkthatvalvesopenandclose,andthatrequiredcontrolled
components(pumpetc.)startandstopwhenoperatedmanually.

Checkthatthetemperatures/signalsshowninthedisplaymatchtheactualconnectedcomponents.

Havingcompletedthemanualoperationcheck,choosecontrollermode(scheduled,comfort,savingorfrostprotection).

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2.8Navigation,ECLApplicationKeyA275

Navigation,A275,circuits1,2and3

Home

A275.1A275.2A275.3

CircuitCircuitCircuit

MENU

Schedule

Settings

FlowtemperatureHeatcurve((((

Tanktemperature1219313193

Roomlimit

Returnlimit

Optimization

Controlpar.

Boiler

IDnos.

1117812178
11177

1118212182
1118312183
1101512015
1103112031
1103212032
1103312033
1103412034
1103512035
1103612036
1103712037
1108512085
1101112011
1101212012

1101412014
1102612026
1102012020
1102112021
1117912179

11046
11049
11071
11038
11047

Function

Temp.max.

12177

1219513195
1219413194

12013

12174
12184
12185
12186
12187
12189

Temp.min.

Chargedifference
Startdifference
Stopdifference
Infl.-max.
Infl.-min.
Adapt.time
HighToutX1
LowlimitY1
LowToutX2
HighlimitY2
Infl.-max.
Infl.-min.
Adapt.time
Priority
Autosaving
Boost
Ramp
Optimizer
Pre-stop
Basedon
Totalstop
Summer,Cut-out
Motorpr.
Xp
Tn
Mrun
Nz
Min.act.time
Difference
Max.Tlimit
Min.ONtime
StopatTout
Protection

11

((((((

((((
((((

((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((

((((
((((
((((
((((
((((

(((
(((
(((
(((
(((

ApplicationA275

2

((
((

((

1

23

(

(
(
(
(
(
(

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Navigation,A275,circuits1,2and3,continued

Home

MENU

Settings

Holiday

Alarm

Anti-bacteria

Influenceoverview

Des.flowT
Des.DHWT

Application

Temp.monitor.

Alarmoverview

ApplicationA275

A275.1A275.2A275.3

CircuitCircuitCircuit

IDnos.

1101012010ECAaddr.((((
11017

11050

1205113051
1205313053

1204113041
115001250013500
1102212022

12023

12052

12076
1107712077
1107812078
1104012040
110931209313093
11141

1214113141
111421214213142

12147

12148

12149

12150

Function

Demandoffset
Pdemand

Ch.-o.valve/P
Tank,sec./prim.
DHWPpost-run
SenddesiredT
Pexercise

Mexercise
DHWpriority
Circ.PfrostT
PfrostT
PheatT
Ppost-run
Frostpr.T
Ext.input
Ext.mode

Upperdifference
Lowerdifference
Delay
Lowesttemp.

11

(((
(((

((((((
((((

((((
((((
((((
((((((
((((((
((((((

((((((

((((

2

((
((
((

(

((

((

1

23

(
(

(
(
(
(
(

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Navigation,applicationA275,Commoncontrollersettings

Home

MENU

Time&Date
HolidaySelectable

Inputoverview1

Inputoverview2

Inputoverview3
Log1(sensors)

Log2(sensors)

Log3(sensors)

Outputoverride

OutdoorTLogtoday
RoomT
RoomT&desiredLog2days
BoilerT&desiredLog4days
ReturnT&limit
OutdoorTLogtoday
RoomT
FlowT&desiredLog2days
ReturnT&limitLog4days
TankT&desired
TankT&desiredLogtoday

IDno.

ApplicationA275,Commoncontrollersettings

Function

Selectable

OutdoorT
Outdooracc.T
RoomT
BoilerT
ReturnT
OutdoorT
Outdooracc.T
RoomT
FlowT
ReturnT
TankT
TankT

Logyesterday

Logyesterday

Logyesterday
Log2days
Log4days
P1
B1
M2
P4
P3
A1

A275.1A275.2A275.3

(((

(((

(((

(((

(((

(((

(((

(

(

(

(

(

(

(

(((

((

((

(((

(((

(

(

(

(

(

(

(((

(((

(

(

((

((

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Navigation,applicationA275,Commoncontrollersettings,continued

Home

MENU

Keyfunctions

SystemECLversion

ApplicationA275,Commoncontrollersettings

IDno.

NewapplicationEraseapplication
Application
FactorysettingSystemsettings

Copy

Keyoverview

Extension
Ethernet
Portalconfig
M-busconfig
EnergyMeters
Rawinputoverview
Sensoroffset
Alarm
Display

Communication

Language

60058
60059

38

39
2048
2150
2151
2050

Function

Usersettings
Gotofactory
To
Systemsettings
Usersettings
Startcopying

Codeno.
Hardware
Software
Buildno.
Serialno.
Productiondate

32:Tsensordefekt
Backlight
Contrast
Modbusaddr.
Baud
ECL485addr.
Servicepin
Ext.reset
Language

A275.1A275.2A275.3

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

(((

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Navigation,A375.1,A375.2andA375.3,circuits1,2and3

Home

MENU

Schedule

Schedulecirc.P

Settings

ApplicationA375

A375.1A375.2A375.3

CircuitCircuitCircuit

IDnos.

FlowtemperatureHeatcurve((((

1117812178
11177

12177

Tanktemperature1219313193

1219513195
1219413194

Roomlimit

Returnlimit

Optimization

Controlpar.

Boiler

1118212182
1118312183
1101512015
1103112031
1103212032
1103312033
1103412034
1103512035
1103612036
1103712037
1108512085
1101112011
1101212012

12013

1101412014
1102612026
1102012020
1102112021
1117912179

12174
12184
12185
12186
12187
12189
12024

11046
11049
11071
11072
11038
11047
11048
11074
11075
11073

Function

Temp.max.
Temp.min.
Ext.desiredT

Chargedifference
Startdifference
Stopdifference
Infl.-max.
Infl.-min.
Adapt.time
HighToutX1
LowlimitY1
LowToutX2
HighlimitY2
Infl.-max.
Infl.-min.
Adapt.time
Priority
Autosaving
Boost
Ramp
Optimizer
Pre-stop
Basedon
Totalstop
Summer,cut-out
Motorpr.
Xp
Tn
Mrun
Nz
Min.act.time
Actuator
Difference
Max.Tlimit
Min.ONtime
Sequencetype
StopatTout
Protection
Bandlimit
Reaction,o.band
Reaction,inband
Steps

11

((((((

((((
((((
(((

((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((
((((

((((
((((
((((
((((
((((

(((
(((
(((
(((
(((
(((
(((
(((
(((
(((

2

(

((
((

((

1

23

(

(
(
(
(
(
(
(

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Navigation,A375.1,A375.2andA375.3,circuits1,2and3,continued

Home

MENU

Settings

Holiday

Alarm

Anti-bacteria

Influenceoverview

Des.flowT
Des.DHWT

Application

Temp.monitor.

Alarmoverview

ApplicationA375

A375.1A375.2A375.3

CircuitCircuitCircuit

IDnos.

1101012010ECAaddr.((((
11017

11050

1205113051
1205313053
12055

1204113041
115001250013500
1102212022

12023

12052

12076
1107712077
1107812078

1104012040
110931209313093
11141

1214113141
111421214213142

12147

12148

12149

12150

Function

Demandoffset
Pdemand

Ch.-o.valve/P
Tank,sec./prim.
Circ.Ppriority
DHWPpost-run
SenddesiredT
Pexercise

Mexercise
DHWpriority
Circ.PfrostT
PfrostT
PheatT
Ppost-run
Frostpr.T
Ext.input
Ext.mode

Upperdifference
Lowerdifference
Delay
Lowesttemp.

11

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Navigation,applicationA375.1,A375.2andA375.3,Commoncontrollersettings

Home

MENU

Time&Date
HolidaySelectable

Inputoverview1

Inputoverview2

Inputoverview3
Log1(sensors)

Log2(sensors)

Log3(sensors)

Outputoverride

OutdoorTLogtoday
RoomT
RoomT&desiredLog2days
BoilerT&desiredLog4days
ReturnT&limit
OutdoorTLogtoday
RoomT&desiredLogyesterday
FlowT&desiredLog2days
ReturnT&limitLog4days
TankT&desired
TankT&desiredLogtoday

IDno.

ApplicationA375,Commoncontrollersettings

Function

Selectable

OutdoorT
Outdooracc.T
RoomT
BoilerT
ReturnT
Ext.desiredT
OutdoorT
Outdooracc.T
RoomT
FlowT
ReturnT
TankT
TankT

Logyesterday

Logyesterday
Log2days
Log4days
P1
B1
B2
B3
B4
B5
B6
B7
B8
M2
P4
P3
A1

A375.1A375.2A375.3

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Navigation,applicationA375.1,A375.2andA375.3,Commoncontrollersettings,continued

Home

MENU

Keyfunctions

SystemECLversion

ApplicationA375,Commoncontrollersettings

IDno.

NewapplicationEraseapplication
Application
FactorysettingSystemsettings

Copy

Keyoverview

Extension
Ethernet
Portalconfig
M-busconfig
EnergyMeters
Rawinputoverview
Sensoroffset
Alarm
Display

Communication

Language

60058
60059

38

39
2048
2150
2151
2050

Function

Usersettings
Gotofactory
To
Systemsettings
Usersettings
Startcopying

Codeno.
Hardware
Software
Buildno.
Serialno.
Productiondate

32:Tsensordefekt
Backlight
Contrast
Modbusaddr.
Baud
ECL485addr.
Servicepin
Ext.reset
Language

A375.1A375.2A375.3

(((

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Navigation,A375.4andA375.5,circuits1,2and3

Home

MENU

Schedule

Schedulecirc.P

Settings

ApplicationA375

A375.4A375.5

CircuitCircuit

IDnos.

FlowtemperatureHeatcurve(((

1117812178
11177
11004

Tanktemperature13193

Roomlimit

Returnlimit

Optimization

Controlpar.

Boiler

1118212182
1118312183
1101512015
1103112031
1103212032
1103312033
1103412034
1103512035
1103612036
1103712037
1108512085
11029
11028
1101112011
1101212012

1101412014
1102612026
1102012020
1102112021
1117912179

11607
11608
11424
11046
11364
11184
11185
11186
11187
11189

12177

12013

12174
12184
12185
12186
12187
12189
12024

13195
13194

Function

Temp.max.
Temp.min.
DesiredT

Chargedifference
Startdifference
Stopdifference
Infl.-max.
Infl.-min.
Adapt.time
HighToutX1
LowlimitY1
LowToutX2
HighlimitY2
Infl.-max.
Infl.-min.
Adapt.time
Priority
DHW,ret.Tlimit
Con.T,ret.Tlim.
Autosaving
Boost
Ramp
Optimizer
Pre-stop
Basedon
Totalstop
Summer,cut-out
Motorpr.
Xp
Tn
Mrun
Nz
Min.act.time
Actuator
Controlvoltage
LowX
HighX
Min.offtime
Difference
Control,delay
Xp
Tn
Mrun
Nz
Min.act.time

11

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Navigation,A375.4andA375.5,circuits1,2and3,continued

Home

MENU

Settings

Holiday

Alarm

Anti-bacteria

Influenceoverview

Des.flowT
Des.DHWT

Application

S9pressure

Temp.monitor.

Alarmoverview

ApplicationA375

A375.4A375.5

CircuitCircuit

IDnos.

1101012010ECAaddr.(((
11017

11050

115001250013500
1102212022

12023
12052

12076
1107712077
1107812078
1104012040
110931209313093
11141

1214113141
111421214213142

12147

12148

12149

12150

13051
13053

13041

13607
13608
13614
13615
13617

Function

Demandoffset
Pdemand

Ch.-o.valve/P
Tank,sec./prim.
Circ.Ppriority
DHWPpost-run
SenddesiredT
Pexercise

Mexercise
DHWpriority
Circ.PfrostT
PfrostT
PheatT
Ppost-run
Frostpr.T
Ext.input
Ext.mode

Pressure
LowX
HighX
Alarmhigh
Alarmlow
Alarmtime-out
Upperdifference
Lowerdifference
Delay
Lowesttemp.

11

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Navigation,applicationA375.4andA375.5,Commoncontrollersettings

Home

MENU

Time&Date
HolidaySelectable

Inputoverview1

Inputoverview2

Inputoverview3
Log1(sensors)

Log2(sensors)

Log3(sensors)

Outputoverride

OutdoorTLogtoday
RoomT&desiredLogyesterday
BoilerT&desiredLog2days
ReturnT&limitLog4days
Pressure
OutdoorTLogtoday
RoomT&desiredLogyesterday
FlowT&desiredLog2days
ReturnT&limitLog4days
TankT&desiredLogtoday

IDno.

ApplicationA375,Commoncontrollersettings

Function

Selectable

OutdoorT
Outdooracc.T
RoomT
BoilerT
ReturnT
Pressure
OutdoorT
Outdooracc.T
RoomT
FlowT
ReturnT
TankT

Logyesterday
Log2days
Log4days
P1
B1
M2
M3
P4
P3
P5
A1

V1

A375.4A375.5

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Navigation,applicationA375.4andA375.5,Commoncontrollersettings,continued

Home

MENU

Keyfunctions

SystemECLversion

ApplicationA375,Commoncontrollersettings

IDno.

NewapplicationEraseapplication
Application
FactorysettingSystemsettings

Copy

Keyoverview

Extension
Ethernet
Portalconfig
M-busconfig
EnergyMeters
Rawinputoverview
Sensoroffset
Alarm
Display

Communication

Language

60058
60059

38

39
2048
2150
2151
2050

Function

Usersettings
Gotofactory
To
Systemsettings
Usersettings
Startcopying

Codeno.
Hardware
Software
Buildno.
Serialno.
Productiondate

32:Tsensordefekt
Backlight
Contrast
Modbusaddr.
Baud
ECL485addr.
Servicepin
Ext.reset
Language

A375.4A375.5

((

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OperatingGuideECLComfort210/296/310,applicationA275/A375

3.0Dailyuse

3.1Howtonavigate

Younavigateinthecontrollerbyturningthedialleftorrightto
thedesiredposition().

Thedialhasabuilt-inaccellerator.Thefasteryouturnthedial,the
fasteritreachesthelimitsofanywidesettingrange.

Thepositionindicatorinthedisplay(
youare.

Pushthedialtoconfirmyourchoices().

Thedisplayexamplesarefromatwo-circuitapplication:One
heatingcircuit()andonedomestichot-water(DHW)circuit().
Theexamplesmightdifferfromyourapplication.

)willalwaysshowyouwhere

ExampleshowsECL210/310

Heatingcircuit():DHWcircuit();

Somegeneralsettingswhichapplytotheentirecontrollerare
locatedinaspecificpartofthecontroller.

Toenter‘Commoncontrollersettings’:

Action:Purpose:

Choose‘MENU’inanycircuit

Confirm

Choosethecircuitselectoratthetop
rightcornerinthedisplay

Confirm

Choose‘Commoncontrollersettings’

Confirm

Examples:

Circuitselector

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OperatingGuideECLComfort210/296/310,applicationA275/A375

3.2Understandingthecontrollerdisplay

ThissectiondescribesthefunctioningeneralfortheECLComfort
210/296/310series.Theshowndisplaysaretypicalandnot
applicationrelated.Theymightdifferfromthedisplaysinyour
application.

Choosingafavoritedisplay

Yourfavoritedisplayisthedisplayyouhavechosenasthedefault
display.Thefavoritedisplaywillgiveyouaquickoverviewofthe
temperaturesorunitsthatyouwanttomonitoringeneral.

Ifthedialhasnotbeenactivatedfor20min.,thecontrollerwill
reverttotheoverviewdisplayyouhavechosenasfavorite.

Toshiftbetweendisplays:Turnthedialuntilyoureachthedisplay
selector(
turntochooseyourfavoriteoverviewdisplay.Pushthedialagain.

)atthebottomrightsideofthedisplay.Pushthedialand

Heatingcircuit

Overviewdisplay1informsabout:
actualoutdoortemperature,controllermode,
actualroomtemperature,desiredroomtemperature.

Overviewdisplay2informsabout:
actualoutdoortemperature,trendinoutdoortemperature,
controllermode,max.andmin.outdoortemperaturessince
midnightaswellasdesiredroomtemperature.

Overviewdisplay3informsabout:
date,actualoutdoortemperature,controllermode,time,desired
roomtemperatureaswellasshowsthecomfortscheduleofthe
currentday.

Overviewdisplay4informsabout:
stateofthecontrolledcomponents,actualflowtemperature,
(desiredflowtemperature),controllermode,returntemperature
(limitationvalue),influenceondesiredflowtemperature.

ThevalueabovetheV2symbolindicates0–100%oftheanalogue
signal(0–10V).

Note:

Anactualflowtemperaturevaluemustbepresent,otherwisethe
circuit'scontrolvalvewillclose.

Overviewdisplay1:Overviewdisplay2:

Overviewdisplay3:Overviewdisplay4:

Exampleofoverviewdisplaywith
Influenceindication:

Example,favoritedisplay1in
A230.3,wheremin.desiredroom
temperatureisindicated(22.7):

Dependentonthechosendisplay,theoverviewdisplaysforthe
heatingcircuitinformyouabout:

•actualoutdoortemperature(-0.5)

•controllermode()

•actualroomtemperature(24.5)

•desiredroomtemperature(20.7°C)

•trendinoutdoortemperature(

)

•min.andmax.outdoortemperaturessincemidnight(

•date(23.02.2010)

•time(7:43)

•comfortscheduleofthecurrentday(0-12-24)

•stateofthecontrolledcomponents(M2,P2)

•actualflowtemperature(49°C),(desiredflowtemperature(31))

•returntemperature(24°C)(limitationtemperature(50))

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)

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Thesettingofthedesiredroomtemperatureisimportantevenifa
roomtemperaturesensor/RemoteControlUnitisnotconnected.

Ifthetemperaturevalueisdisplayedas

"--"

thesensorinquestionisnotconnected.

"---"

thesensorconnectionisshort-circuited.

DHWcircuit

Overviewdisplay1informsabout:
actualDHWtemperature,controllermode,desiredDHW
temperatureaswellasthecomfortscheduleofthecurrentday.

Overviewdisplay2informsabout:
stateofthecontrolledcomponents,actualDHWtemperature,
(desiredDHWtemperature),controllermode,returntemperature
(limitationvalue),influenceondesiredDHWtemperature.

Dependentonchosendisplay,theoverviewdisplaysfortheDHW
circuitinformyouabout:

•actualDHWtemperature(50.3)

•controllermode(

)

•desiredDHWtemperature(50°C)

•comfortscheduleofthecurrentday(0-12-24)

•stateofthecontrolledcomponents(M1,P1)

•actualDHWtemperature(50°C),(desiredDHWtemperature(50))

•returntemperature(--°C)(limitationtemperature(30))

Settingthedesiredtemperature

Dependingonthechosencircuitandmode,itispossibletoenter
alldailysettingsdirectlyfromtheoverviewdisplays(seealsothe
nextpageconcerningsymbols).

Overviewdisplay1:Overviewdisplay2:

Exampleofoverviewdisplaywith
Influenceindication:

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Settingthedesiredroomtemperature

Thedesiredroomtemperaturecaneasilybeadjustedinthe
overviewdisplaysfortheheatingcircuit.

Action:Purpose:

Desiredroomtemperature

Confirm

Adjustthedesiredroomtemperature

Confirm

Thisoverviewdisplayinformsaboutoutdoortemperature,actual
roomtemperatureaswellasdesiredroomtemperature.

Thedisplayexampleisforcomfortmode.Ifyouwanttochange
thedesiredroomtemperatureforsavingmode,choosethemode
selectorandselectsaving.

Examples:

20.5

21.0

Thesettingofthedesiredroomtemperatureisimportantevenifa
roomtemperaturesensor/RemoteControlUnitisnotconnected.

SettingthedesiredDHWtemperature

ThedesiredDHWtemperaturecaneasilybeadjustedinthe
overviewdisplaysfortheDHWcircuit.

Action:Purpose:

DesiredDHWtemperature

Confirm

AdjustthedesiredDHWtemperature

Confirm

InadditiontotheinformationaboutdesiredandactualDHW
temperature,thetoday'sscheduleisvisible.

Thedisplayexampleindicatesthatthecontrollerisinscheduled
operationandincomfortmode.

Examples:

50

55

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Settingthedesiredroomtemperature,ECA30/ECA31

Thedesiredroomtemperaturecanbesetexactlyasinthe
controller.However,othersymbolscanbepresentinthedisplay
(pleasesee'Whatdothesymbolsmean?').

WiththeECA30/ECA31youcanoverridethedesiredroom
temperaturesetinthecontrollertemporarilybymeansoftheoverride

functions:

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OperatingGuideECLComfort210/296/310,applicationA275/A375

3.3Ageneraloverview:Whatdothesymbolsmean?

Symbol

Description

Outdoortemp.

Relativehumidityindoor

Roomtemp.

DHWtemp.

Positionindicator

Scheduledmode

Comfortmode

Savingmode

Frostprotectionmode

Manualmode

Standby

Coolingmode

Symbol

Temperature

Mode

Description

Alarm

Letter

Event

Monitoringtemperaturesensor
connection

Displayselector

Max.andmin.value

Trendinoutdoortemperature

Windspeedsensor

Sensornotconnectedornotused

Sensorconnectionshort-circuited

Fixedcomfortday(holiday)

Activeinfluence

Heatingactive(+)
Coolingactive(-)

Activeoutputoverride

Optimizedstartorstoptime

Heating

Cooling

DHW

Commoncontrollersettings

PumpON

PumpOFF

FanON

FanOFF

Actuatoropens

Actuatorcloses
Actuator,analoguecontrol

signal
Pump/fanspeed

DamperON

Circuit

Controlled
component

Numberofheatexchangers

Additionalsymbols,ECA30/31:

Symbol

InECA30/31onlythesymbolsthatarerelevanttotheapplicationin
thecontrolleraredisplayed.

Description

ECARemoteControlUnit

Connectionaddress(master:15,slaves:1-9)

15

Dayoff

Holiday

Relaxing(extendedcomfortperiod)

Goingout(extendedsavingperiod)

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DamperOFF

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OperatingGuideECLComfort210/296/310,applicationA275/A375

3.4Monitoringtemperaturesandsystemcomponents

ThissectiondescribesthefunctioningeneralfortheECLComfort
210/296/310series.Theshowndisplaysaretypicalandnot
applicationrelated.Theymightdifferfromthedisplaysinyour
application.

Boilercircuit

Theoverviewdisplayintheboilercircuitensuresaquickoverview
oftheactualand(desired)temperaturesaswellastheactualstate
ofthesystemcomponents.

Displayexample:

49°C

(45)

25°C

(35)

ThedisplayexampleisfromanA375applicationwith4boilers.In
theA275applications,thedisplaywillonlyshow1boiler.

Heatingcircuit

Theoverviewdisplayintheheatingcircuitensuresaquick
overviewoftheactualand(desired)temperaturesaswellasthe
actualstateofthesystemcomponents.

Displayexample:

49°C

(31)

24°C

(50)

DHWcircuit

TheoverviewdisplayintheDHWcircuitensuresaquickoverview
oftheactualand(desired)temperaturesaswellastheactualstate
ofthesystemcomponents.

Boilertemperature
Desiredboilertemperature
Returntemperature

Returntemperaturelimitation

Flowtemperature

Desiredflowtemperature
Returntemperature

Returntemperaturelimitation

Displayexamplewithheatexchanger:

Displayexample(heatexchanger):

50°C

(50)

--

(30)

AQ042286456873en-010501

Flowtemperature

Desiredflowtemperature

Returntemperature:sensornotconnected

Returntemperaturelimitation

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OperatingGuideECLComfort210/296/310,applicationA275/A375

Inputoverview

Anotheroptiontogetaquickoverviewofmeasuredtemperatures
isthe'Inputoverview'whichisvisibleinthecommoncontroller
settings(howtoenterthecommoncontrollersettings,see
‘Introductiontocommoncontrollersettings’ .)

Asthisoverview(seedisplayexample)onlystatesthemeasured
actualtemperatures,itisread-only.

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3.5Influenceoverview

ThissectiondescribesthefunctioningeneralfortheECLComfort
210/296/310series.Theshowndisplaysaretypicalandnot
applicationrelated.Theymightdifferfromthedisplaysinyour
application.

Themenugivesanoverviewoftheinfluencesonthedesired
flowtemperature.Itdiffersfromapplicationtoapplicationwhich
parametersarelisted.Itcanbehelpfulinaservicesituationto
explainunexpectedconditionsortemperaturesamongothers.

Ifthedesiredflowtemperatureisinfluenced(corrected)byoneor
moreparameters,itisindicatedbyasmalllinewitharrow-down,
arrow-upordouble-arrow:

Arrow-down:
Theparameterinquestionreducesthedesiredflowtemperature.

Arrow-up:
Theparameterinquestionincreasesthedesiredflowtemperature.

Double-arrow:
Theparameterinquestioncreatesanoverride(e.g.Holiday).

Straightline:
Noactiveinfluence.

Intheexample,thearrowinthesymbolpointsdownwardsfor
'Roomlim. ' .Thismeansthattheactualroomtemperatureis
higherthanthedesiredroomtemperaturewhichagainresultsina
decreaseofthedesiredflowtemperature.

ExampleofoverviewdisplaywithInfluenceindication:

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3.6Manualcontrol

ThissectiondescribesthefunctioningeneralfortheECLComfort
210/296/310series.Theshowndisplaysaretypicalandnot
applicationrelated.Theymightdifferfromthedisplaysinyour
application.

Itispossibletomanuallycontroltheinstalledcomponents.

Manualcontrolcanonlybeselectedinfavoritedisplaysinwhich
thesymbolsforthecontrolledcomponents(valve,pumpetc.)are
visible.

Action:Purpose:

Choosemodeselector

Confirm

Choosemanualmode

Confirm

Choosepump

Confirm

SwitchONthepump

SwitchOFFthepump.

Confirmpumpmode

Choosemotorizedcontrolvalve

Confirm

Openthevalve

Stopopeningthevalve

Closethevalve

Examples:

ControlledcomponentsCircuitselector

Duringmanualoperation:

•Allcontrolfunctionsaredeactivated

•Outputoverrideisnotpossible

•Frostprotectionisnotactive

Stopclosingthevalve

Confirmvalvemode

Toleavemanualcontrol,usethemodeselectortoselectthe
desiredmode.Pushthedial.

Manualcontrolistypicallyusedwhencommisioningthe
installation.Thecontrolledcomponents,valve,pumpetc.,canbe
controlledforcorrectfunction.

88|©Danfoss|2021.04

Whenmanualcontrolisselectedforonecircuit,itisautomatically
selectedforallcircuits!

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OperatingGuideECLComfort210/296/310,applicationA275/A375

3.7Schedule

3.7.1Setyourschedule

ThissectiondescribesthescheduleingeneralfortheECLComfort
210/296/310series.Theshowndisplaysaretypicalandnot
applicationrelated.Theymightdifferfromthedisplaysinyour
application.Insomeapplications,however,theremightbemore
thanoneschedule.Additionalschedulescanbefoundin‘Common
controllersettings’ .

Thescheduleconsistsofa7-dayweek:

=

M

Monday

=

T

Tuesday

=

W

Wednesday

=

T

Thursday

=

F

Friday

=

S

Saturday

=

S

Sunday

Theschedulewillday-by-dayshowyouthestartandstoptimesof
yourcomfortperiods(heating/DHWcircuits).

Changingyourschedule:

Action:

Purpose:
Choose'MENU'inanyoftheoverview

displays
Confirm

Confirmthechoice'Schedule'

Choosethedaytochange

Confirm*

GotoStart1

Confirm

Adjustthetime

Confirm

GotoStop1,Start2etc.etc.

Returnto'MENU'

Confirm

Choose'Yes'or'No'in'Save'

Confirm

Examples:

*Severaldayscanbemarked

Thechosenstartandstoptimeswillbevalidforallthechosendays
(inthisexampleThursdayandSaturday).

Youcansetmax.3comfortperiodsaday.Youcandeleteacomfort
periodbysettingstartandstoptimestothesamevalue.

AQ042286456873en-010501

Eachcircuithasitsownschedule.Tochangetoanothercircuit,goto
'Home',turnthedialandchoosethedesiredcircuit.

Thestartandstoptimescanbesetinhalf-hourly(30min.)intervals.

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OperatingGuideECLComfort210/296/310,applicationA275/A375

4.0Settingsoverview

Forfactorysettingsandsettingrange,seeappendix“ParameterIDoverview” .
ParametersindicatedwithanIDno.like"1x607"meanauniversalparameter.xstandsforcircuit/parametergroup.

SettingIDPage

Heatcurve

Ext.desiredT—(ECLComfort310)

Day

Starttime

Duration

DesiredT

Control,delay

Min.offtime

LowX

HighX

LowX

HighX

DesiredT(Desiredflowtemperature)

ECAaddr.(ECAaddress,choiceofRemoteControlUnit)

Autosaving(savingtemp.dependentonoutdoortemp.)

Boost

Ramp(referenceramping)

Optimizer(optimizingtimeconstant)

Adapt.time(adaptiontime)

Demandoffset

Basedon(optimizationbasedonroom/outdoortemp.)

Totalstop

Pexercise(pumpexercise)

Mexercise(valveexercise)

Actuator

Pre-stop(optimizedstoptime)

Con.T,re.Tlim.(Constanttemperaturemode,return
temperaturelimitation)

DHW,ret.Tlimit

HighToutX1(returntemp.limitation,highlimit,X-axis)

LowlimitY1(returntemp.limitation,lowlimit,Y-axis)

LowToutX2(returntemp.limitation,lowlimit,X-axis)

HighlimitY2(returntemp.limitation,highlimit,Y-axis)

Infl.-max.(returntemp.limitation-max.influence)

Infl.-min.(returntemp.limitation-min.influence)

Adapt.time(adaptationtime)

StopatTout

Ppost-run

DHWPpost-run(DHWpump,post-run)

11364120

11424120

11607121

11608121

13607138

13608138

1x00496

1x010127

1x011108

1x012109

1x013110

1x014110

1x015101

1x017127

1x020

1x021

1x022127

1x023127

1x024123

1x026112

1x028104

1x029104

1x031105

1x032105

1x033105

1x034105

1x035106

1x036106

1x037106

1x038

1x040128

1x041128

Factorysettingsincircuit(s)

1

94

96

143

143

144

144

111

111

114

23

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SettingIDPage

Difference

Protection

Bandlimit(subtypesA375.1,A375.2andA375.3)

Max.Tlimit

Pdemand

Ch.-o.valve/P(changeovervalve/pump)

DHWpriority(closedvalve/normaloperation)

Tank,sec./prim.(Tanksecondarilyorprimarilyconnected)

Circ.Ppriority

Min.ONtime

Sequencetype(subtypesA375.1,A375.2,A375.3)

Steps(subtypesA375.1,A375.2,A375.3)

Reaction,o.band(outsideband)(subtypesA375.1,A375.2,
A375.3)

Reaction,inband(subtypesA375.1,A375.2,A375.3)

Circ.PfrostT

PfrostT(circulationpump,frostprotectiontemp.)

PheatT(heatdemand)

Priority(priorityforreturntemp.limitation)

Frostpr.T(frostprotectiontemp.)

Ext.input(externaloverride)

Ext.mode(externaloverridemode)

Upperdifference

Lowerdifference

Delay,example

Lowesttemp.

Motorpr.(motorprotection)

Temp.min.

Temp.max.

Summer,cut-out(limitforheatingcut-out)

Infl.-max.(roomtemp.limitation,max.)

Infl.-min.(roomtemp.limitation,min.)

Xp(proportionalband)

Xp(proportionalband)

Tn(integrationtimeconstant)

Tn(integrationtimeconstant)

Mrun(runningtimeofthemotorizedcontrolvalve)

Mrun(runningtimeofthemotorizedcontrolvalve)

Nz(neutralzone)

Nz(neutralzone)

Min.act.time(min.activationtimegearmotor)

Min.act.time(min.activationtimegearmotor)

Chargedifference

1x046

1x047

1x048

1x049

1x050128

1x051128

1x052129

1x053129

1x055129

1x071116

1x072116

1x073

1x074

1x075118

1x076130

1x077130

1x078130

1x085106

1x093130

1x141

1x142131

1x147

1x148139

1x149

1x150

1x174

1x177

1x17896

1x179112

1x182101

1x183102

1x184119

1x184124

1x185119

1x185124

1x186119

1x186124

1x187120

1x187124

1x189120

1x189125

1x19398

Factorysettingsincircuit(s)

1

114

114

115

115

117

117

131

139

141

141

123

96

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Stopdifference

Startdifference

SenddesiredT

Alarmhigh

Alarmlow

Alarmtime-out

SettingIDPage

1x19498

1x19599

1x500133

1x614138

1x615138

1x617139

Factorysettingsincircuit(s)

1

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5.0Settings

5.1IntroductiontoSettings

Descriptionsofsettings(parameter'sfunctions)aredividedinto
groupsasusedintheECLComfort210/296/310controller's
menustructure.Examples:"Flowtemperature" ,"Roomlimit"and
soon.Eachgroupstartswithageneralexplanation.

Thedescriptionsofeachparameterareinnumericorder,relatedto
theparameter'sIDnumbers.Youmightcomeacrossdifferences
betweentheorderinthisOperatingGuideandtheECLComfort
210/296/310controllers.

Someparameterdescriptionsarerelatedtospecificapplication
subtypes.Thismeansthatyoumightnotseetherelatedparameter
intheactualsubtypeintheECLcontroller.

Thenote"SeeAppendix… "referstotheAppendixattheendof
thisOperatingGuide,whereparameter'ssettingrangesandfactory
settingsarelisted.

Thenavigationhints(forexampleMENU>Settings>Returnlimit
…)covermultiplesubtypes.

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5.2Flow(boiler)temperature

TheECLComfortcontrollerdeterminesandcontrolstheflow
temperaturerelatedtotheoutdoortemperature.Thisrelationship
iscalledtheheatcurve.

Theheatcurveissetbymeansof6coordinatepoints.Thedesired
flowtemperatureissetat6pre-definedoutdoortemperature
values.

Theshownvaluefortheheatcurveisanaveragevalue(slope),
basedontheactualsettings.

Outdoor

temp.

Desiredflowtemp.

A

BC

Your

settings

-30°C45°C75°C95°C

-15°C40°C60°C90°C

-5°C35°C50°C80°C
0°C32°C45°C70°C
5°C30°C40°C60°C

15°C25°C28°C35°C

Adjustthedesiredflowtemperatureat-30,-15,-5,0,5,and15°C,
ifrequired.

A:Exampleforfloorheating
B:Factorysettings
C:Exampleforradiatorheating(highdemand)

Desiredflowtemperature

Slopechanges

MENU>Settings>Flow(boiler)temperature

Heatcurve

CircuitSettingrange

20.1...4.01.0

Factorysetting

Theheatcurvecanbechangedintwoways:

1.Thevalueoftheslopeischanged(seeheatcurveexamples
onnextpage)

2.Thecoordinatesoftheheatcurvearechanged

Changethevalueoftheslope:

Pushthedialtoenter/changetheslopevalueoftheheatcurve
(example:1.0).
Whentheslopeoftheheatcurveischangedbymeansoftheslope
value,thecommonpointforallheatcurveswillbeadesiredflow
temperature=24.6°Catanoutdoortemperature=20°C

Changethecoordinates:

Pushthedialtoenter/changethecoordinatesoftheheatcurve
(example:-30,75).
Theheatcurverepresentsthedesiredflowtemperaturesat
differentoutdoortemperaturesandatadesiredroomtemperature
of20°C.

Ifthedesiredroomtemperatureischanged,thedesiredflow
temperaturealsochanges:
(DesiredroomT-20)×HC×2.5
where"HC"istheHeatCurveslopeand"2.5"isaconstant.

Coordinatechanges

Thecalculatedflowtemperaturecanbeinfluencedbythe‘Boost’and
‘Ramp’functionsetc.

Example:

Heatcurve:
Desiredflowtemp.:
Desiredroomtemp.:
Calculation(22–20)×1.0×2.5=
Result:

Thedesiredflowtemperaturewillbecorrectedfrom50°Cto55°C.

1.0
50°C
22°C
5

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Choosingaheatcurveslope

Theheatcurvesrepresentthedesiredflowtemperatureatdifferentoutdoortemperaturesandatadesiredroomtemperatureof20°C.

Thesmallarrows()indicate6differentoutdoortemperaturevaluesatwhichyoucanchangetheheatcurve.

TheECLComfort210/296/310controlstheDHWtemperature
accordingtothedesiredflowtemperatureforexampleunderthe
influenceofthereturntemperature.

ActualDHWtemp.

ThedesiredDHWtemperatureissetintheoverviewdisplay.

50.3:

50:

ActualDHWtemperature

DesiredDHWtemperature

ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.

xstandsforcircuit/parametergroup.

DesiredDHW
temp.

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MENU>Settings>Flow(boiler)temperature

DesiredT(Desiredflowtemperature)

WhentheECLComfortisinoverridemode,type"Const.T",thedesiredflow
temperaturecanbeset.
A"Const.T"relatedreturntemperaturelimitationcanalsobeset.SeeMENU
>Settings>Returnlimit>'Con.T,ret.Tlim. '

1x004

SeeAppendix“ParameterIDoverview”

MENU>Settings>Flow(boiler)temperature

Temp.min.

1x177

SeeAppendix“ParameterIDoverview”

Setthemin.flowtemperatureforthesystem.Thedesiredflow
temperaturewillnotbelowerthanthissetting.Adjustthefactory
setting,ifrequired.

Overridemode

WhenECLComfortisinScheduledmode,acontact(switch)signalcan
beappliedtoaninputinordertooverridetoComfort,Saving,Frost
ProtectionorConstanttemperature.Aslongasthecontact(switch)
signalisapplied,theoverrideisactive.

The"DesiredT"valuecanbeinfluencedby:

•temp.max.

•temp.min.

•roomtemp.limit

•returntemp.limit

•flow/powerlimit

‘Temp.min.’isoverruledif'Totalstop'isactiveinSavingmodeor
'Cut-out'isactive.

‘Temp.min.’canbeoverruledbytheinfluencefromthereturn
temperaturelimitation(see'Priority').

MENU>Settings>Flow(boiler)temperature

Temp.max.

1x178

SeeAppendix“ParameterIDoverview”

Setthemax.flowtemperatureforthesystem.Thedesired
temperaturewillnotbehigherthanthissetting.Adjustthefactory
setting,ifrequired.

Thesettingfor‘Temp.max. ’hashigherprioritythan‘Temp.min.’ .

Thesettingof‘heatcurve’ispossibleforheatingcircuitsonly.

Thesettingfor‘Temp.max. ’hashigherprioritythan‘Temp.min.’ .

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Externalsignalfordesiredflowtemperature

Avoltage(0-10V)canbeappliedtotheinputterminalS10in
ordertodeterminethedesiredflowtemperature.

ThemeasuredvoltageoninputS10mustbeconvertedtoa
temperaturevaluebythecontroller.Whenthevoltagegetshigher,
thedesiredflowtemperatureincreases.

Thefollowingsettingssetupthescaling.

MENU>Settings>Flow(boiler)temperature

Ext.desiredT—(ECLComfort310)

CircuitSettingrange

1

Theactualdesiredflowtemperatureisindicatedbytheunit°C.

Read-outonly

Factorysetting

Read-out:

--:

°C:

Externalvoltagesignalisnotconnected..

Externalvoltagesignalconvertedtodesiredflow
temperature.

Pushthedialtoseethegraphandenterthevaluesetsfortheinput
voltage(1and10volt)anddisplayeddesiredflowtemperature.

Example:Relationshipbetweeninputvoltageanddisplayeddesiredflow
temperature

Desiredflowtemp.(°C)

Volt

Thisexampleshowsthat1voltcorrespondsto10.0°Cand10volt
correspondto100°C.

Desiredflowtemperature:

10...120°C

Fixedvoltagesettings:1Vand10V
Factorysettings:

(1,10)and(10,100)

Thismeansthatthe‘Desiredflowtemperature’is10°Cat1.0V
and100°Cat10V.

Typically,thehigherthevoltage,thehigherthedisplayeddesired
flowtemperature.

Theexternalvoltagesignalmustbehigherthan1.0Vinorderto
activatetheoverride.

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5.3Tanktemperature

ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.

xstandsforcircuit/parametergroup.

MENU>Settings>Tanktemperature

Chargedifference

SetthenumberofdegreesabovethedesiredDHWtemperaturethatwill
resultintheDHWheating(charging)temperature.

SeeAppendix“ParameterIDoverview”

Value:

NumberofdegreestobeaddedtothedesiredDHW
temperaturetoobtaintheDHWheating(charging)
temperature.

1x193

=

X

#1#

#2#

#3#

#4#

#5#

ThedesiredDHWtemperatureisrelatedtothetanktemperature
sensor.

Iftwotanktemperaturesensorsareinstalled,therelationistothe
uppertanktemperaturesensor.

Time

=

Chargingdifference(ID1x193)

=

DesiredDHWtemperature

=

Startdifference(ID1x195)

=

ActualDHWtemperature

=

DHWheating/chargingactivity

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MENU>Settings>Tanktemperature

Stopdifference

SetthenumberofdegreesaboveorbelowthedesiredDHWtemperature
thatwillstoptheDHWheating/charging.

SeeAppendix“ParameterIDoverview”

Value:

Setthenumberofdegrees.

OneDHWtanktemperaturesensor(examplewithpositive‘Stop
difference’value):

1x194

=

X

#1#

#2#

#3#

#4#

Time

=

Stopdifference(ID1x194)

=

DesiredDHWtemperature

=

ActualDHWtemperature

=

DHWheating/chargingactivity

OneDHWtanktemperaturesensor(examplewithnegative‘Stop
difference’value):

=

X

#1#

#2#

#3#

#4#

Time

=

Stopdifference(ID1x194)

=

DesiredDHWtemperature

=

ActualDHWtemperature

=

DHWheating/chargingactivity

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MENU>Settings>Tanktemperature

Startdifference

SetthenumberofdegreesbelowthedesiredDHWtemperaturethatwill
starttheDHWheating(charging).

SeeAppendix“ParameterIDoverview”

Value:

Setthenumberofdegrees.

1x195

=

X

#1#

#2#

#3#

#4#

#5#

Example:

DesiredDHWtemp.:

Startdifference:

Result:
TheDHWheatingstartswhenthetemperaturemeasuredbythetank

temperaturesensor(upper)islowerthan52°C.

Time

=

Chargingdifference(ID1x193)

=

DesiredDHWtemperature

=

Startdifference(ID1x195)

=

ActualDHWtemperature

=

DHWheating/chargingactivity

55°C

-3K

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