Danfoss ECL Comfort 210

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
S5
Returntemperaturesensor
S6
DHWtanktemperaturesensor
S7Roomtemperaturesensor/ECA30
(S10)
(Externaltemperaturecontrol,notillustrated)
P1
Circulationpump,heating
B1–B8Burner1...8
P3
DHWheatingpump
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
14|©Danfoss|2017.09
VI.GU.L2.02
OperatingGuideECLComfort210/296/310,applicationA275/A375