
TheapplicationA332.3isbasicallyliketheapplicationA332.2.
ExtrasinrelationtoA332.2:
TemperaturesensorsS5(heatingcircuit)andS6(coolingcircuit)
canbeusedforeitherreturntemperaturelimitationorsurface
temperaturelimitation.Functionalityselectionisdonebysetting
aninfluencefactor.IfinfluencefactorsaresetforbothReturnand
Surfacelimitation,therewillnotbeanylimitation.
AdvancedDomesticHotWater(DHW)heatingcontrol:
TheDHWtemperatureatS9ismaintainedat‘omfort’levelata
DHWdraw-off(DHWtapping)(theflowswitchS8isactivated).
IfthemeasuredDHWtemperatureatS9islowerthanthedesired
DHWtemperature,themotorizedcontrolvalveM3isopened
graduallyandviceversa.
TheDHWtemperaturecontrolisinrelationtoactualsupply
temperatureS7.Inordertocompensateforthereactiontime,
themotorizedcontrolvalvecanbepre-activatedatthestartofa
DHWdraw-off.
Anidletemperature(thedesiredSavingtemperature)canbe
maintainedateitherS7orS9whenthereisnoDHWdraw-off.
Bymeansofaweekschedule,theDHWcircuitcanbein‘omfort’
or‘Saving’mode(twovaluesforthedesiredDHWtemperature).
ThereturntemperatureS10canbelimited,forexamplenottobe
toohighortoolow.
Ifso,thedesiredflowtemperatureatS9canbeadjusted,for
exampletoalowervalue.Thisresultsinagradualclosingofthe
motorizedcontrolvalve.
Ananti-bacteriafunctionisavailableforactivationonselected
daysoftheweek.
Foradescriptionofthechange-overfromheatingtocooling
operation,pleasereadthesection‘A232ingeneral’ .
Theshowndiagramisafundamentalandsimplifiedexampleanddoes
notcontainallcomponentsthatarenecessaryinasystem.
AllnamedcomponentsareconnectedtotheELomfortcontroller.
TypicalA332.3application:
Listofcomponents:
EL310ElectroniccontrollerELomfort310
EA32Built-inextensionmodule
S1Outdoortemperaturesensor
S2EA31RoomtemperatureandRHsensor*
S3Flowtemperaturesensor,heating
S4Flowtemperaturesensor,cooling
S5(Optional)ReturnorFloorsurfacetemperaturesensor
S6(Optional)Returnoreilingsurfacetemperature
sensor
S7Supplytemperaturesensor,DHW
S8Flowswitch,DHWdraw-off
S9Flowtemperaturesensor,DHW
S10Returntemperaturesensor,DHW
P1irculationpump,heating(ON/OFF)
P2irculationpump,cooling(ON/OFF)
P7irculationpump,DHW(ON/OFF)
X3(notillustrated)Heatingdemand(ON/OFF)
X4(notillustrated)Multi-functionality
X5(notillustrated)Multi-functionality
M1Motorizedcontrolvalve,heating(3-pointcontrolled)
M2Motorizedcontrolvalve,cooling(3-pointcontrolled)
M3Motorizedcontrolvalve,DHW(3-pointcontrolled)
A1Alarm
*Alternative:ESM-10,roomtemperaturesensor
10|©Danfoss|2017.08VI.JM.G2.02
OperatingGuideECLComfort210/296/310,applicationA232/A332