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DHW heating from the primary circuit (Anl 4):
The control valve opens depending on the
DHW temperature
from its closed position.
Stop storage tank charging
The controller stops charging the storage tank when the water temperature in the storage tank
measured at sensor SF1 reaches the value T =
DHW heating ON
+
Hysteresis
. In systems with
two storage tank sensors, the controller stops charging the storage tank when the water temper
-
ature in the storage tank measured at sensor SF2 reaches the value
DHW heating OFF
.Insys
-
tems with storage tank thermostat, the
Hysteresis
of the thermostat determines when the storage
tank charging is finished.
When a high flow temperature is required by the system, the storage tank charging pumpis im
-
mediately switched off. If no heating is taking place or if the flow temperature demand in the
system is lower, the
End charging process
parameter applies for switching off the storage tank
charging pump.
The storage tank charging pump is switched off at the latest after two transit time periods of the
control valve (2 x T
Y
).
Functions
WE Configuration
Storage sensor SF1 ON FB14
Storage sensor SF2 OFF FB15
Return flow sensor RüF1 ON FB20
Parameters
WE Range of values
DHW heating ON 45 °C 20 to 90 °C
DHW heating OFF 50 °C 20 to 90 °C
Hysteresis 5 °C 0 to 30 °C
Charging temperature 55 °C 20 to 90 °C
Stop charging 53 °C 20 to 90 °C
DHW temperature 55 °C 20 to 90 °C
50 EB 5476 EN
Functions of the DHW circuit