2. Danfoss
  3. ECL Comfort 210/296/310, A275/A375

Danfoss ECL Comfort 210/296/310, A275/A375 Operating instructions

  • Hello! I am an AI chatbot trained to assist you with the Danfoss ECL Comfort 210/296/310, A275/A375 Operating instructions. I’ve already reviewed the document and can help you find the information you need or explain it in simple terms. Just ask your questions, and providing more details will help me assist you more effectively!
OperatingGuide
ECLComfort210/296/310,applicationA275/A375
1.0TableofContents
1.0TableofContents...............................................1
1.1Importantsafetyandproductinformation.....................2
2.0Installation........................................................5
2.1Beforeyoustart.....................................................5
2.2Identifyingthesystemtype......................................19
2.3Mounting...........................................................43
2.4Placingthetemperaturesensors................................46
2.5Electricalconnections.............................................48
2.6InsertingtheECLApplicationKey..............................75
2.7Checklist............................................................81
2.8Navigation,ECLApplicationKeyA275.........................82
3.0Dailyuse.........................................................90
3.1Howtonavigate...................................................90
3.2Understandingthecontrollerdisplay..........................91
3.3Ageneraloverview:Whatdothesymbolsmean?...........95
3.4Monitoringtemperaturesandsystem
components........................................................96
3.5Influenceoverview................................................98
3.6Manualcontrol.....................................................99
3.7Schedule..........................................................100
4.0Settingsoverview..........................................101
5.0Settings.........................................................104
5.1IntroductiontoSettings........................................104
5.2Flow(boiler)temperature......................................105
5.3Tanktemperature................................................110
5.4Roomlimit........................................................114
5.5Returnlimit.......................................................116
5.6Optimization......................................................122
5.7Boiler...............................................................128
5.8Controlparameters..............................................136
5.9Application.......................................................141
5.10Alarm..............................................................150
5.11Alarmoverview..................................................154
5.12Anti-bacteria......................................................155
6.0Commoncontrollersettings............................157
6.1Introductionto‘Commoncontrollersettings’..............157
6.2Time&Date.......................................................158
6.3Holiday............................................................159
6.4Inputoverview...................................................161
6.5Log.................................................................162
6.6Outputoverride..................................................163
6.7Keyfunctions.....................................................164
6.8System.............................................................166
7.0Miscellaneous................................................173
7.1ECA30/31setupprocedures.................................173
7.2Overridefunction................................................181
7.3Severalcontrollersinthesamesystem......................184
7.4Frequentlyaskedquestions....................................187
7.5Definitions........................................................190
7.6Type(ID6001),overview.......................................194
7.7ParameterIDoverview..........................................195
©Danfoss|2018.09VI.GU.L3.02|1
1.1Importantsafetyandproductinformation
1.1.1Importantsafetyandproductinformation
ThisInstallationGuideisassociatedwithECLApplicationKeyA275
(ordercodeno.087H3814).
TheECLKeyA275containstwosetsofapplications:onesetfor
A275(A275.1/A275.2/A275.3)andanothersetforA375(A375.1
/A375.2/A375.3).
TheapplicationsA275arefor1-burnersolutions.
TheapplicationsA375areformultipleburnersolutions.
Thefunctionscanberealizedin:
ECLComfort210(A275)forsimplesolutionsor
ECLComfort310(A275/A375)foradvancedsolutions,e.g.M-bus,
ModbusandEthernet(Internet)communication.
TheapplicationA275complieswithECLComfortcontroller210
and310asofsoftwareversion1.11(visibleatstart-upofthe
controllerandin‘Commoncontrollersettings’in‘System’).
AdditionaldocumentationforECLComfort210andaccessoriesis
availableonwww.ecl.doc.danfoss.com.
A275/A375navigationingeneral:
A275.1/A375.1A275.2/A375.2A275.3/A375.3
CircuitCircuitCircuit
11
2
1
23
Burnercontroloverview:
R2–R10=relaynos.inECL/ECA32
Seethesection‘Electricalconnections’formoredetailedinformation.
Applicationkeysmightbereleasedbeforealldisplaytextsare
translated.InthiscasethetextisinEnglish.
2|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
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"
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'.
VI.GU.L3.02
©Danfoss|2018.09|3
OperatingGuideECLComfort210/296/310,applicationA275/A375
°C(degreesCelsius)isameasuredtemperaturevaluewhereasK
(Kelvin)oftenisusedfortemperaturedifferences.
TheIDno.isuniquefortheselectedparameter.
ExampleFirstdigitSeconddigitLastthreedigits
1117411174
-
Circuit1Parameterno.
12174
1
2
174
-
Circuit2Parameterno.
IfanIDdescriptionismentionedmorethanonce,itmeansthatthere
arespecialsettingsforoneormoresystemtypes.Itwillbemarked
withthesystemtypeinquestion(e.g.12174-A266.9).
ParametersindicatedwithanIDno.like"1x607"meanauniversal
parameter.
xstandsforcircuit/parametergroup.
DisposalNote
Thisproductshouldbedismantledanditscomponents
sorted,ifpossible,invariousgroupsbeforerecycling
ordisposal.
Alwaysfollowthelocaldisposalregulations.
4|©Danfoss|2018.09
VI.GU.L3.02
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).Thelowertheoutdoortemperature,thehigherthedesired
boilertemperature.Theboilertemperatureisalsotheflow
temperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(measuredbyS7ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredboilertemperaturecanbeadjusted.
Thecirculationpump(P1)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFiftheoutdoortemperaturegets
higherthanasetvalue.
TypicalA275.1application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S3
Boilertemperaturesensor
S5Returntemperaturesensor
S7
Roomtemperaturesensor/ECA30
P1
Circulationpump
B1Burner
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
VI.GU.L3.02
©Danfoss|2018.09|5
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA275.2isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
theboilertemperature.ThedesiredboilertemperatureatS3is
calculatedintheECLcontroller,basedontheoutdoortemperature
(S1).Thelowertheoutdoortemperature,thehigherthedesired
boilertemperature.Theboilertemperatureisalsotheflow
temperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.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
Boilertemperaturesensor
S5Returntemperaturesensor
S6
DHWtanktemperaturesensor
S7
Roomtemperaturesensor/ECA30
P1
Circulationpump,heating
B1Burner
P3
DHWheatingpump
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
6|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA275.2isveryflexible.Thesearethebasic
principles:
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
Boilertemperaturesensor
S5Returntemperaturesensor
S6
DHWtanktemperaturesensor
S7
Roomtemperaturesensor/ECA30
P1
Circulationpump,heating
B1Burner
P3
DHWheatingpump
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
VI.GU.L3.02
©Danfoss|2018.09|7
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA275.3isveryflexible.Thesearethebasic
principles:
Heating(circuit1):
Typically,theboilertemperatureisadjustedaccordingtoyour
requirements.TheboilertemperaturesensorS3isthemost
importantsensor.Itmustbeplacedcorrectlyinordertomeasure
theboilertemperature.ThedesiredboilertemperatureatS3is
calculatedintheECLcontroller,basedontheoutdoortemperature
(S1).Thelowertheoutdoortemperature,thehigherthedesired
boilertemperature.Theboilertemperatureisalsotheflow
temperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.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
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.
8|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA275.3isveryflexible.Thesearethebasic
principles:
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(measuredbyS8ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredflowtemperaturecanbeadjusted.
Thecirculationpump(P4)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalueoraDHWheatingpriorityispresent.
TypicalA275.3application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S2Returntemperaturesensor,circuit2
S3
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.
VI.GU.L3.02
©Danfoss|2018.09|9
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA275.3isveryflexible.Thesearethebasic
principles:
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
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.
10|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
ApplicationA275ingeneral:
Unusedinputcan,bymeansofanoverrideswitch,beusedto
overridethescheduletoafixed'Comfort'or'Saving'mode.
ModbuscommunicationtoaSCADAsystemcanbeestablished.
Alarm,A275.1andA275.2:
AlarmA1(relayR4)andthealarmsymbol(
)canbeactivated:
•ifatemperaturesensororitsconnectiondisconnects/
shortcircuits.
Alarm,A275.3:
Thealarmsymbol(
)canbeactivated:
•ifatemperaturesensororitsconnectiondisconnects/
shortcircuits.
•iftheactualflowtemperatureatS4(heatingcircuit2),differs
fromthedesiredflowtemperature.
VI.GU.L3.02
©Danfoss|2018.09|11
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).Thelowertheoutdoortemperature,thehigher
thedesiredboilertemperature.Theboilertemperatureisalsothe
flowtemperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA
30)doesnotequalthedesiredroomtemperature,thedesired
boilertemperaturecanbeadjusted.
Thecirculationpump(P1)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.
Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.
TypicalA375.1application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S3
Commonboilertemperaturesensor
S5Returntemperaturesensor
S7
Roomtemperaturesensor/ECA30
(S10)
(Externaltemperaturecontrol,notillustrated)
P1
Circulationpump
B1–B8Burner1...8
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
Boilersequencerotation/shifttakesplaceatmidnight.
12|©Danfoss|2018.09
VI.GU.L3.02
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).Thelowertheoutdoortemperature,thehigher
thedesiredboilertemperature.Theboilertemperatureisalsothe
flowtemperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA
30)doesnotequalthedesiredroomtemperature,thedesired
boilertemperaturecanbeadjusted.
Thecirculationpump(P1)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.
Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.
TypicalA375.2application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S3
Commonboilertemperaturesensor
S5Returntemperaturesensor
S6
DHWtanktemperaturesensor
S7
Roomtemperaturesensor/ECA30
(S10)
(Externaltemperaturecontrol,notillustrated)
P1
Circulationpump,heating
B1–B8Burner1...8
P3
DHWheatingpump
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
Boilersequencerotation/shifttakesplaceatmidnight.
VI.GU.L3.02
©Danfoss|2018.09|13
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA375.2isveryflexible.Thesearethebasic
principles:
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:
S1
Outdoortemperaturesensor
S3
Commonboilertemperaturesensor
S5Returntemperaturesensor
S6
DHWtanktemperaturesensor
S7
Roomtemperaturesensor/ECA30
(S10)
(Externaltemperaturecontrol,notillustrated)
P1
Circulationpump,heating
B1–B8Burner1...8
P3
DHWheatingpump
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
14|©Danfoss|2018.09
VI.GU.L3.02
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).Thelowertheoutdoortemperature,thehigher
thedesiredboilertemperature.Theboilertemperatureisalsothe
flowtemperatureinthedirectconnectedheatingcircuit.
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(S7orRemotecontrolunitECA
30)doesnotequalthedesiredroomtemperature,thedesired
boilertemperaturecanbeadjusted.
Thecirculationpump(P1)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanasetvalue.
Thedesiredcommonboilertemperaturecan,viaS10,becontrolled
bymeansofanexternalvoltageintherange0-10volt.
TypicalA375.3application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S2Returntemperaturesensor,circuit2
S3
Commonboilertemperaturesensor,circuit1
S4
Flowtemperaturesensor,circuit2
S5Returntemperaturesensor,circuit1
S7
Roomtemperaturesensor/ECA30,circuit1
S8
Roomtemperaturesensor/ECA30,circuit2
(S10)
(Externaltemperaturecontrol,notillustrated)
M2
Motorizedcontrolvalve,circuit2
P1
Circulationpump,circuit1
B1–B8Burner1...8
P3
DHWheatingpump,circuit3
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
Boilersequencerotation/shifttakesplaceatmidnight.
VI.GU.L3.02
©Danfoss|2018.09|15
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA375.3isveryflexible.Thesearethebasic
principles:
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
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(measuredbyS8ortheremote
controlunitECA30)doesnotequalthedesiredroomtemperature,
thedesiredflowtemperaturecanbeadjusted.
Thecirculationpump(P4)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalueoraDHWheatingpriorityispresent.
TypicalA375.3application:
*Pressurereliefvalve
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
S1
Outdoortemperaturesensor
S2Returntemperaturesensor,circuit2
S3
Commonboilertemperaturesensor,circuit1
S4
Flowtemperaturesensor,circuit2
S5Returntemperaturesensor,circuit1
S7
Roomtemperaturesensor/ECA30,circuit1
S8
Roomtemperaturesensor/ECA30,circuit2
(S10)
(Externaltemperaturecontrol,notillustrated)
M2
Motorizedcontrolvalve,circuit2
P1
Circulationpump,circuit1
B1–B8Burner1...8
P3
DHWheatingpump,circuit3
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
16|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
TheapplicationA375.3isveryflexible.Thesearethebasic
principles:
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:
S1
Outdoortemperaturesensor
S2Returntemperaturesensor,circuit2
S3
Commonboilertemperaturesensor,circuit1
S4
Flowtemperaturesensor,circuit2
S5Returntemperaturesensor,circuit1
S7
Roomtemperaturesensor/ECA30,circuit1
S8
Roomtemperaturesensor/ECA30,circuit2
(S10)
(Externaltemperaturecontrol,notillustrated)
M2
Motorizedcontrolvalve,circuit2
P1
Circulationpump,circuit1
B1–B8Burner1...8
P3
DHWheatingpump,circuit3
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
VI.GU.L3.02
©Danfoss|2018.09|17
OperatingGuideECLComfort210/296/310,applicationA275/A375
ApplicationsA375ingeneral:
Unusedinputcan,bymeansofanoverrideswitch,beusedto
overridethescheduletoafixed'Comfort'or'Saving'mode.
ModbuscommunicationtoaSCADAsystemcanbeestablished.
Oneormoreconnectedfloworenergymeters(basedonanM-bus
signal)cantransfertheM-busdatatotheModbuscommunication.
Alarm,A375.1,A375.2andA375.3:
AlarmA1(relayR6)andthealarmsymbol(
)canbeactivated:
•ifatemperaturesensororitsconnectiondisconnects/
shortcircuits.
Alarm,A375.3:
AlarmA1(relayR6)andthealarmsymbol(
)canbeactivated:
•iftheactualflowtemperatureatS4(heatingcircuit2),differs
fromthedesiredflowtemperature.
Thecontrollerispre-programmedwithfactorysettingsthatareshown
inthe‘ParameterIDoverview’appendix.
18|©Danfoss|2018.09
VI.GU.L3.02
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.
VI.GU.L3.02
©Danfoss|2018.09|19
OperatingGuideECLComfort210/296/310,applicationA275/A375
A275APPLICATIONS:
A275.1,examplea
BoilerON/OFFcontrolforaheatingcircuit.
*=pressurereliefvalve
A275.1,exampleb
BoilerON/OFFcontrolforaheatingcircuit.Theboilercircuitisequippedwithalowlossheader.
*=pressurereliefvalve
20|©Danfoss|2018.09
VI.GU.L3.02
OperatingGuideECLComfort210/296/310,applicationA275/A375
/