Danfoss ECL Comfort A260 User Manual

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
S2
Returntemperaturesensor,circuit2
S3
Commonboilertemperaturesensor,circuit1
S4
Flowtemperaturesensor,circuit2
S5
Returntemperaturesensor,circuit1
S7Roomtemperaturesensor/ECA30,circuit1
S8Roomtemperaturesensor/ECA30,circuit2
(S10)
(Externaltemperaturecontrol,notillustrated)
M2
Motorizedcontrolvalve,circuit2
P1
Circulationpump,circuit1
B1–B8Burner1...8
P3
DHWheatingpump,circuit3
A1
Alarm
Thecontrollerispre-programmedwithfactorysettingsthatareshown
intherelevantchaptersofthisguide.
VI.GU.L2.02
©Danfoss|2017.09|17
OperatingGuideECLComfort210/296/310,applicationA275/A375

Danfoss ECL Comfort A260 Specifications

General

Brand	Danfoss
Model	ECL Comfort A260
Category	Controller
Language	English