Danfoss 087H3803 User Manual

MENU>Settings>Returnlimit
HighlimitY2(returntemp.limitation,highlimit,Y-axis)
1x034
Setthereturntemperaturelimitationreferringtotheoutdoortemperature
valuesetin'LowToutX2' .
SeeAppendix“ParameterIDoverview”
ThecorrespondingXcoordinateissetin'LowToutX2'.
MENU>Settings>Returnlimit
Infl.-max.(returntemp.limitation-max.influence)
1x035
Determineshowmuchthedesiredflowtemperaturewillbeinfluencedifthe
returntemperatureishigherthanthesetlimit.
SeeAppendix“ParameterIDoverview”
Influencehigherthan0:
Thedesiredflowtemperatureisincreased,whenthereturn
temperaturegetshigherthanthesetlimit.
Influencelowerthan0:
Thedesiredflowtemperatureisdecreased,whenthereturn
temperaturegetshigherthanthesetlimit.
Example
Thereturnlimitisactiveabove50°C.
Theinfluenceissetto0.5.
Theactualreturntemperatureis2degreestoohigh.
Result:
Thedesiredflowtemperatureischangedby0.5x2=1.0degree.
MENU>Settings>Returnlimit
Infl.-min.(returntemp.limitation-min.influence)
1x036
Determineshowmuchthedesiredflowtemperaturewillbeinfluencedifthe
returntemperatureislowerthanthecalculatedlimit.
SeeAppendix“ParameterIDoverview”
Influencehigherthan0:
Thedesiredflowtemperatureisincreased,whenthereturn
temperaturegetsbelowthecalculatedlimit.
Influencelowerthan0:
Thedesiredflowtemperatureisdecreased,whenthereturn
temperaturegetsbelowthecalculatedlimit.
Example
Thereturnlimitisactivebelow50°C.
Theinfluenceissetto-3.0.
Theactualreturntemperatureis2degreestoolow.
Result:
Thedesiredflowtemperatureischangedby-3.0x2=-6.0degrees.
Normally,thissettingis0indistrictheatingsystemsbecausealower
returntemperatureisacceptable.
Typically,thissettingishigherthan0inboilersystemstoavoidatoo
lowreturntemperature(seealso'Infl.-max.').
MENU>Settings>Returnlimit
Adapt.time(adaptationtime)
1x037
Controlshowfastthereturntemperatureadaptstothedesiredreturn
temperaturelimit(Integrationcontrol).
SeeAppendix“ParameterIDoverview”
OFF:
Thecontrolfunctionisnotinfluencedbythe‘Adapt.
time’ .
Minor
value:
Thedesiredtemperatureisadaptedquickly.
Major
value:
Thedesiredtemperatureisadaptedslowly.
Theadaptationfunctioncancorrectthedesiredflowtemperature
withmax.8K.
VI.GU.L2.02
©Danfoss|2017.09|119
OperatingGuideECLComfort210/296/310,applicationA275/A375

Danfoss 087H3803 Specifications

General

Brand	Danfoss
Model	087H3803
Category	Controller
Language	English