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),thusresultinginagradualclosingofthe
motorizedcontrolvalve.
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(S7)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.
Unusedinputs(fromS7andup)can,bymeansofanoverride
switchorrelaycontact,beusedforoverridingthescheduletoa
fixed'Comfort','Saving','Frostprotection'or'Constanttemperature'
mode.
Analarmcanbeactivatediftheactualflowtemperaturediffers
fromthedesiredflowtemperature.
TypicalA230.1application:
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:
ECL210/296/
310
ElectroniccontrollerECLComfort210,296or310
S1
Outdoortemperaturesensor
S2
(Optional)Roomtemperaturesensor/ECA30
S3
Flowtemperaturesensor
S4
(Optional)Supplyflowtemperaturesensor
(read-outonly)
S5
(Optional)Returntemperaturesensor
S7
(Optional)Flow/energymeter(pulsesignal)
S8
(Optional)Windspeedsignal(0-10V)
P1
Circulationpump
P2
(notillustrated)RelayoutputforSchedule2
M1
Motorizedcontrolvalve,3-pointcontrolled
Alternative1:Controlvalve,thermo-actuator
controlled(DanfosstypeABV)
Alternative2(ECL310withECA32):Motorized
controlvalve,0-10Voltcontrolled
A1
Alarm
TheA230.1applicationcanutilizeaconnectedflow/energymeter
tolimittheflow/power.
6|©Danfoss|2019.07
VI.LG.H5.02
OperatingGuideECLComfort210/296/310,applicationA230