
2.0Installation
2.1Beforeyoustart
TheapplicationA230isveryflexible.Thesearethebasicprinciples:
Heating(applicationA230.1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.TheflowtemperaturesensorS3isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.
Thelowertheoutdoortemperature,thehigherthedesiredflow
temperature.
Bymeansofaweekschedule,theheatingcircuitcanbein
‘Comfort’or‘Saving’mode.Theweekschedulecanhaveupto3
‘Comfort’periods/day.Avalueforthedesiredroomtemperature
canbesetineachofthemodes.
InSavingmodetheheatingcanbereducedorswitchedofftotally.
ThemotorizedcontrolvalveM1isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
ThereturntemperatureS5tothedistrictheatingsupplyshouldnot
betoohigh.Ifso,thedesiredflowtemperaturecanbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
Furthermore,thereturntemperaturelimitationcanbedependent
oftheoutdoortemperature.Typically,thelowertheoutdoor
temperature,thehighertheacceptedreturntemperature.
Ifthemeasuredroomtemperature(directlyconnectedtemperature
sensorESM-10(S2)orRemotecontrolunitECA30/31)doesnot
equalthedesiredroomtemperature,thedesiredflowtemperature
canbeadjusted.
Thecirculationpump,P1,isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Aconnectedfloworenergymeterbasedonpulses(S)canlimit
thefloworenergytoasetmaximumvalue.Furthermore,the
limitationcanbeinrelationtotheoutdoortemperature.Typically,
thelowertheoutdoortemperature,thehighertheacceptedflow/
power.WhenthissubtypeisusedinanECLComfort296or310the
flow/energysignalcanalternativelycomeasanM-bussignal.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
Tocompensatefortheinfluenceofwind,awindspeedsensorcan
beconnected.Basedonthewindspeedsensorsignal(0-10V),the
controllercanbesettoincreasethedesiredflowtemperaturein
relationtoincreasedwindspeed.
Unusedinputscan,bymeansofanoverrideswitchorrelaycontact,
beusedforoverridingthescheduletoafixed'Comfort' ,'Saving',
'Frostprotection'or'Constanttemperature'mode.
Analarmcanbeactivatediftheactualflowtemperaturediffers
fromthedesiredflowtemperature.
TypicalA230.1application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
CL210/296/
310
lectroniccontrollerCLComfort210,296or310
S1Outdoortemperaturesensor
S2(Optional)Roomtemperaturesensor/CA30
S3Flowtemperaturesensor
S4(Optional)Supplyflowtemperaturesensor
(read-outonly)
S5(Optional)Returntemperaturesensor
S7(Optional)Flow/energymeter(pulsesignal)
S8(Optional)Windspeedsensor
P1Circulationpump,heating
M1Motorizedcontrolvalve,3-pointcontrolled
Alternative1:Controlvalve,thermo-actuator
controlled(DanfosstypeABV)
Alternative2(CL310withCA32):Motorized
controlvalve,0-10Voltcontrolled
A1Alarm
TheA230.1applicationcanutilizeaconnectedflow/energymeter
tolimittheflow/power.
6|©Danfoss|201.05VI.LG.H4.02
OperatingGuideECLComfort210/296/310,applicationA230