of deviation has elapsed, set-back or reduced operation is activated for the heating circuit
with the control valve (for heating circuit RK2 in systems Anl 10.1 to 10.3).
Functions
WE
Configuration
Priority through reverse control
CO4 -> F08 - 0
Priority through set-back operation 0
2 min
CO4 -> F09 - 1
Activate priority in case of deviation / 2 to 10 min
6.8
Forced 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 cir-
cuits starts.
For the individual controller, this means that storage tank charging is activated when the wa-
ter temperature in the storage tank falls below the adjusted deactivation value of T =
DHW
tempe 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 cir-
cuit(s).
Note!
This function is not available when a storage tank thermostat is used.
6.9
Thermal disinfection of the DHW storage tank
In all systems with DHW heating, the DHW storage tank is thermally disinfected on a se-
lected
Day of the week or every day. The storage tank is heated up to the adjusted Disinfec-
tion temperature, taking into account the Charging temperature boost parameter. Disinfec-
tion begins at the adjusted
Start time and, at the latest, ends at the specified Stop time.
If the
Start time and Stop time are set to the identical time, disinfection is controlled depend-
ing on the switching state of the binary input BE17 to be performed daily or on the pro-
grammed day of the week. Disinfection starts when BE17 = ON, or optionally BE17 = OFF.
It stops at the latest when the switching state of the binary input next changes.
When the
Disinfection temperature has not been reached before the end of the thermal disin-
fection cycle, an “Err 3“ alarm is generated. The alarm is automatically reset when the
Disin-
fection temperature is properly reached during the following thermal disinfection cycle.
EB 5576 EN
69
Functions of the DHW circuit
