Samson TROVIS 5573 - Page 145

EB 5573 EN 16-63
Appendix A (conguration instructions)
16.3.8.1 Reverse control
In all systems with DHW heating and at least one heating circuit with a control valve, DHW
heatingcanbegivenprioritybyapplyingreversecontrol.WiththesettingCO4->F08-1,
the temperature is monitored at sensor VFx.
InsystemswithoutsensorVFxintheDHWcircuit(e.g.Anl4.5,11.0),thetemperatureis
monitored directly at storage tank sensor SF1. If system deviations still occur after the time set
in 'Activate priority in the event of a system deviation' has elapsed, the set point of the heat-
ingcircuitwiththecontrolvalveisgraduallyreducedeachminuteuntiltheowtemperature
setpointhasreached5°Cattheminimum.Howstronglythecontrollerrespondsisdeter-
minedbythe'InuencefactorKP'.
When 'Activate priority in the event of a system deviation' is set to 0, the priority operation is
started regardless of the time and temperature in the system. The control valve of the corre-
sponding heating circuit is closed.
Functions Default Conguration
Priority through reverse control 0
2min
1.0
HC2
CO4->F08-1
Activate priority in the event of a system deviation: 0 to
10min
KP(inuencefactor):0.1to10.0
Control circuit selection
Priority through set-back opera-
tion 0 CO4->F09-0
16.3.8.2 Set-back operation
In all systems with DHW heating and at least one heating circuit with a control valve, DHW
heatingcanbegivenprioritybyapplyingset-backoperation.WiththesettingCO4->
F09-1,thetemperatureismonitoredatsensorVFxintheDHWcircuit.
InsystemswithoutsensorVFxintheDHWcircuit(e.g.Anl4.5,11.0),thetemperatureis
monitoreddirectlyatstoragetanksensorSF1.Ifsystemdeviationsstilloccurafterthetimeset
in 'Activate priority in the event of a system deviation' has elapsed, the selected heating cir-
cuit with the control valve is set to reduced operation.
When 'Activate priority in the event of a system deviation' is set to 0, the priority operation is
started regardless of the time and temperature in the system. of all heating circuits.