Parameters
WE
Parameter level / Range of values
Hysteresis**
5 °C
PA4 / 0 to 30 °C
Charging temperature boost***
10 °C
PA4 / 0 to 50 °C
Max. charging temperature
80 °C
PA4 / 20 to 130 °C (only with VF4)
Lag of storage tank charging pump
0.5
PA4 / 0.1 to 10.0
Sustained DHW temperature
40 °C
PA4 / 20 to 90 °C
*
Parameters serve as limitation of the adjustment range for the DHW temperature to be set
at the rotary switch
** Deactivation value T =
DHW temperature
+
hysteresis
*** Charging temperature T =
DHW temperature
+
charging temperature boost
6.3
DHW heating with solar system
The systems Anl 1.3, 1.4, 1.7, 1.8, 2.3, 2.4, 3.3, 3.4, 4.3, 10.3, 11.3 and 11.4 include a
solar system for DHW heating. In these systems, the difference between the temperatures
measured at storage sensor SF3 and the sensor at the solar collector VF3 is determined. The
Solar pump ON parameter determines the minimum temperature difference between sen-
sors VF3 and SF3 required to activate the solar pump. If the temperature difference falls be-
low the value of
Solar pump OFF, the solar pump is switched off. Basically, the solar pump is
also switched off when the water temperature measured at sensor SF3 has reached the
Max.
storage tank temperature.
Note!
The times-of-use of the DHW circuit do not affect the operation of the solar system.
After the key number 1999 has been set, the operating hours of the solar pump are dis-
played in extended operating level.
Parameters
WE
Parameter level / Range of values
Solar pump ON
10 °C
PA4 / 1 to 30 °C
Solar pump OFF
3 °C
PA4 / 0 to 30 °C
Max. storage tank temperature
80 °C
PA4 / 20 to 90 °C
66
EB 5576 EN
Functions of the DHW circuit
