EQJW146F002 EN
99
Functions of the DHW circuit
Parameters
WE
Switch position: value range
Night set point for DHW temperature
40.0 °C
: Min. to max. adjustable DHW set point
Min. adjustable DHW set point*
40.0 °C
PA4 > P01: 5.0 to 90.0 °C
Max. adjustable DHW set point*
60.0 °C
PA4 > P02: 5.0 to 90.0 °C
Hysteresis**
5.0 °C
PA4 > P03: 1.0 to 30.0 °C
Charging temperature boost***
10.0 °C
PA4 > P04: 0.0 to 50.0 °C
Max. charging temperature
80.0 °C
PA4 > P05: 20.0 to 150.0 °C (only with VF4)
Lag time for storage tank charging pump 1.0
PA4 > P06: 0.0 to 10.0
*
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'
7.2.1
Cold charging protection
In system Anl 1.1(-1), the cold charging protection function causes a storage tank charging
to be started first when the primary flow temperature is sufficiently high enough. The CO4 >
F22 - 1 setting automatically activates the input FG2 to measure the primary flow tempera-
ture. If the measured primary flow temperature is lower than the measured storage tank tem-
perature (e.g. due too a supply line that has cooled down at the start of a storage tank
charging), the heating circuit valve is only opened 10 % at first. The storage tank charging is
not released in absolute priority operation until the primary flow temperature has risen
enough as a result. Parallel operation must be additionally configured if it is required.
Functions
WE
Configuration
Cold charging protection
0
CO4 > F22 - 1
Parallel pump operation
0
10 min
40.0 °C
CO4 > F06 - 1
Cancel: 0 to 10 min
Temperature limit: 20.0 to 90.0 °C
Содержание EQJW146F002
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