2.0Settings
2.1Returntemperaturelimitationinamaster/slavesystem
Thecircuit1menuforreturntemperaturelimitparameters
containsanadditionalparameter"DHW,ret.Tlimit"(=Domestic
HotWater,returntemperaturelimit).
Whenaslaveinamaster/slavesystemisinDHW-tankheating/
chargingmode,thedesiredflowtemperaturevalueistransferredto
themaster.Themasterwillreactbycontrollingaflowtemperature
beinganumberofdegreeshigher("Demandoffset")thanthe
desiredflowtemperaturefromtheslave.
WhenthemasterisfulfillingaDHW-tankheating/charging
demandfromaslave,thereturntemperaturelimitationcanbe
doneinrelationtoasetvalue.
Thereturntemperaturelimitationwillalwaysberelatedtothe
highestlimitationvalue.
Anexample:Returntemperaturelimitation(DHW)=55°Cand
returntemperaturelimitation(heating)=6°C.
Theresultwillbeareturntemperaturelimitationat6°C.
Ifthemasterisnotcontrollingadesiredflowtemperaturefroma
slave,thereturntemperaturelimitationcanbedoneinrelationto
theoutdoortemperature.
Theparameter"DHW,ret.Tlimit"isnotpresentinapplicationswith
DHW-tankheating/charging.
Examples:A237,A247,A367,A377.
MENU>Settings>Returntemperaturelimitationinamaster/
slavesystem
DHW,ret.Tlimit11029
CircuitSettingrangeFactorysetting
1OFF/10–110°COFF
WhenanaddressedslaveisactiveinDHW-tanheating/charging,the
returntemperaturelimitationinthemastercanbeset.
Notes:
•Themastercircuitmustbesettoreactonthedesiredflowtemperature
intheslave(s).See"Demandoffset"(ID11017).
•Theslave(s)mustbesettosendits/theirdesiredflowtemperaturetothe
master.See"SenddesiredT"(ID1x500).
OFF:Noinfluencefromslaves.Thereturntemperature
limitationisrelatedtosettingsin"Returnlimit" .
10–
110°C:
Returntemperaturelimitationvaluewhenslaveisin
DHWtankheating/chargingoperation.
#1#=Master,exampleA266,address15
#2#=Slave,exampleA237,address9
#3#=Slave,exampleA367,address6
SomeexamplesofapplicationswithDHW-tankheating/chargingare:
•A217,A237,A247,A367,A377
VI.GU.W2.2©Danfoss|217.8|5
ECLComfort210,296and310,returntemperaturelimitation