Samson 5179, 5100 Set-backoperation, 6.4Forced charging of the DHW storage tank, Appendix

Appendix

6.3.2 Set-back operation

In all systems with DHW heating and at least one heating circuit with control valve, DHW heat- ing can be given priority by applying set-back operation. The charging temperature can be monitored with the setting Co4 -> Fb06 = OFF and Activate priority in case of deviation > 0.

Function	WE	Configuration
Reverse control	ON	Co4 -> Fb06 = OFF
	0 °C	Activate priority in case of deviation / 0 to 30 °C

Note!

The priority operation is deactivated with the setting Co4 -> Fb06 = OFF and Activate priority in case of deviation = 0!

6.4Forced charging of the DHW storage tank

To provide the full room heating performance when the time-of-use of the heating circuits be- gins, existing storage tanks are charged one hour before the time-of-use of the heating circuits starts. For the individual controller, this means that storage tank charging is activated when the water temperature in the storage tank falls below the adjusted deactivation value of T = DHW demand ON + Hysteresis. The forced charging of the storage tank does not take place when the DHW circuit is not activated at the beginning of the time-of-use set for the heating circuit(s).

Note!

This function is not available when a storage tank thermostat is used.

6.5Thermal disinfection of the DHW storage tank

In all systems with DHW heating, the DHW storage tank is thermally disinfected on a selected Day of the week (1 to 7) or every day (0). The storage tank is heated up to the adjusted Disinfec- tion temperature. The charging set point is always higher than the Disinfection temperature by the value in Charging boost. Disinfection begins at the adjusted Start time and, at the latest, ends at the specified Stop time.

When the Disinfection temperature has not been reached at the end of the thermal disinfection cycle, an ERR-2alarm is generated and blinks on the display. This alarm can be confirmed by opening up Co4 -> Fb08.

The alarm is automatically reset when the Disinfection temperature is properly reached during the following thermal disinfection cycle.

EB 5179 EN 57