2.0Installation
2.1Beforeyoustart
Theapplications(subtypes)intheA376applicationkeyarealmost
identical.However,someapplicationshaveextrafunctionswhich
aredescribedseparately.
Theapplicationsareveryflexible.Thesearethebasicprinciples:
Heating(circuit1):
Typically,theflowtemperatureisadjustedaccordingtoyour
requirements.Theflowtemperaturesensor(S3)isthemost
importantsensor.ThedesiredflowtemperatureatS3iscalculated
intheECLcontroller,basedontheoutdoortemperature(S1)and
thedesiredroomtemperature.Thelowertheoutdoortemperature,
thehigherthedesiredflowtemperature.Bymeansofaweek
schedule,theheatingcircuitcanbein‘Comfort’or‘Saving’mode
(twovaluesforthedesiredroomtemperature).InSavingmodethe
heatingcanbereducedorswitchedofftotally.
ThemotorizedcontrolvalveM2isopenedgraduallywhenthe
flowtemperatureislowerthanthedesiredflowtemperatureand
viceversa.
Thereturntemperature(S5)canbelimited,forexamplenottobe
toohigh.Ifso,thedesiredflowtemperatureatS3canbeadjusted
(typicallytoalowervalue),thusresultinginagradualclosingof
themotorizedcontrolvalve.Furthermore,thereturntemperature
limitationcanbedependentontheoutdoortemperature.
Typically,thelowertheoutdoortemperature,thehigherthe
acceptedreturntemperature.
Inboiler-basedheatingsupplythereturntemperatureshouldnot
betoolow(sameadjustmentprocedureasabove).
AconnectedfloworenergymeterbasedonM-bussignalcanlimit
thefloworenergytoasetmaximumvalue.Furthermore,the
limitationcanbeinrelationtotheoutdoortemperature.Typically,
thelowertheoutdoortemperature,thehighertheacceptedflow/
power.
Thecirculationpump(P2)isONatheatdemandoratfrost
protection.
TheheatingcanbeswitchedOFFwhentheoutdoortemperatureis
higherthanaselectablevalue.
Thefrostprotectionmodemaintainsaselectableflowtemperature,
forexample10°C.
A376.1,A376.2,A376.3,A376.4:
Ifthemeasuredroomtemperaturedoesnotequalthedesired
roomtemperature,thedesiredflowtemperaturecanbeadjusted.
TypicalA376application:
Theshowndiagramisafundamentalandsimplifiedexampleand
doesnotcontainallcomponentsthatarenecessaryinasystem.The
numbersincirclesrefertothecircuitnumbers.
AllnamedcomponentsareconnectedtotheECLComfortcontroller.
Listofcomponents:A376ingeneral,sensors
ECL310
ElectroniccontrollerECLComfort310
S1
Outdoortemperaturesensor
S2
A376.1,A376.2,A376.3,A376.4:
Roomtemperaturesensor,circuit1
A376.2:Roomtemperaturesensor,circuits1and2
A376.9:Returntemperaturesensor,monitoring,circuit1
A376.10:Returntemperaturesensor,monitoring,circuit2
S3
Flowtemperaturesensor,circuit1
S4
DHWtemperaturesensor,circuit3
S5
Returntemperaturesensor,circuit1
S6
Returntemperaturesensor,circuit3
S7
A376.1,A376.3:Roomtemperaturesensor,circuit2
A376.2,A376.4:Supplyflowtemperaturesensor
A376.9,A376.10:Pressuresignal
S8
A376.2,A376.4:Flowswitch,DHWdraw-off
A376.9,A376.10:Alarminput
S9
Flowtemperaturesensor,circuit2
S10
A376.1,A376.2,A376.3,A376.4:
Returntemperaturesensor,circuit2
A376.9,A376.10:
Returntemperaturesensor,monitoring,circuit2
(S11)
(A376.9:Supplyflowtemperaturesensor)
A376.10:Supplyflowpressuresignal
(S12)
A376.9:Supplyreturntemperaturesensor
A376.10:Supplyreturnpressuresignal
(S13)
A376.9,A376.10:Returntemperaturesensor,circuit2
(S14)
A376.9,A376.10:Pressuresignal
(S15)
A376.9,A376.10:Alarminput
(S16)
A376.9,A376.10:Alarminput
6|©Danfoss|2017.11
VI.GU.B3.02
OperatingGuideECLComfort310,applicationA376