Danfoss ECL Comfort 310

5.2Flow(boiler)temperature
TheECLComfortcontrollerdeterminesandcontrolstheflow
(boiler)temperaturerelatedtotheoutdoortemperature.This
relationshipiscalledtheheatcurve.
Theheatcurveissetbymeansof6coordinatepoints.The
desiredflow(boiler)temperatureissetat6pre-definedoutdoor
temperaturevalues.
Theshownvaluefortheheatcurveisanaveragevalue(slope),
basedontheactualsettings.
Outdoor
temp.
Desiredflow(boiler)temp.
Your
settings
A
B
C
-30°C45°C75°C95°C
-15°C40°C60°C90°C
-5°C35°C50°C80°C
0°C32°C45°C70°C
5°C30°C40°C60°C
15°C25°C28°C35°C
A:Exampleforfloorheating
B:Factorysettings
C:Exampleforradiatorheating(highdemand)
MENU>Settings>Flow(boiler)temperature
Heatcurve
CircuitSettingrange
Factorysetting
1
0.1...4.01.0
Theheatcurvecanbechangedintwoways:
1.Thevalueoftheslopeischanged(seeheatcurveexamples
onnextpage)
2.Thecoordinatesoftheheatcurvearechanged
Changethevalueoftheslope:
Pushthedialtoenter/changetheslopevalueoftheheatcurve
(example:1.0).
Whentheslopeoftheheatcurveischangedbymeansoftheslope
value,thecommonpointforallheatcurveswillbeadesiredflow
(boiler)temperature=24.6°Catanoutdoortemperature=20°C
Changethecoordinates:
Pushthedialtoenter/changethecoordinatesoftheheatcurve
(example:-30,75).
Theheatcurverepresentsthedesiredflow(boiler)temperaturesat
differentoutdoortemperaturesandatadesiredroomtemperature
of20°C.
Ifthedesiredroomtemperatureischanged,thedesiredflow
(boiler)temperaturealsochanges:
(DesiredroomT-20)×HC×2.5
where"HC"istheHeatCurveslopeand"2.5"isaconstant.
Desiredflow(boiler)temperature
Slopechanges
Coordinatechanges
Thecalculatedflow(boiler)temperaturecanbeinfluencedbythe
‘Boost’and‘Ramp’functionsetc.
Example:
Heatcurve:
1.0
Desiredflow(boiler)temp.:
50°C
Desiredroomtemp.:
22°C
Calculation(22–20)×1.0×2.5=
5
Result:
Thedesiredflow(boiler)temperaturewillbecorrectedfrom50°C
to55°C.
104|©Danfoss|2017.09
VI.GU.L2.02
OperatingGuideECLComfort210/296/310,applicationA275/A375