If times-of-times have been set for DHW heating, the
Set point DHW temperature
adjusted at
the rotary switch is applied during these times-of-use.
Outside the times-of-use, the
Sustained DHW temperature
parameter is used. This does not
apply when a storage tank thermostat is used.
Stop storage tank charging
The controller stops charging the storage tank when the temperature measured at sensor SS2
has reached the value T =
DHW temperature
+
hysteresis
.
When there is no heating operation or when the flow temperature demand in the system is
lower, the valve is closed.
The exchanger charging pump is switched off when the limit temperature for
Stop charging
has been reached, at the latest, however, after approx. 3 minutes; with a certain delay, the
storage tank charging pump is deactivated as well. When flow sensor VS2 is activated, the
storage tank charging pump is switched off with a certain delay when the limit temperature
Storage tank charging pump OFF
has been reached, at the latest, however, after approx.
3 minutes.
In system Anl 6, it is also possible to link the circulation pipe into the heat exchanger (dashed
line in the schematics). In this case, the regulation of the charging temperature and the oper-
ation of the heat exchanger charging pump remain active even outside the heat exchanger
charging times depending on the times-of-use of the circulation pump.
52
EB 5433 EN
Functions of the DHW circuit
