80
EB 5573 EN
Functions of the DHW circuit
Parameters
WE
Switch position: value range
DHW temperature set point or charging
temperature with CO4 > F01 - 0 setting
60.0 °C
: Min. to max. DHW temperature
DHW temperature sustaining value
40.0 °C
: Min. to max. DHW temperature
Parameters
WE
Parameter level: value range
Min. DHW temperature 1)
40.0 °C
PA4: 5.0 to 90.0 °C
Max. DHW temperature
1)
60.0 °C
PA4: 5.0 to 90.0 °C
Hysteresis
2)
5.0 °C
PA4: 1.0 to 30.0 °C
Charging temperature boost
3)
10.0 °C
PA4: 0.0 to 50.0 °C
Max. charging temperature
80.0 °C
PA4: 20.0 to 150.0 °C (only with VF4)
Lag time for storage tank charging pump
1.0
PA4: 0.0 to 10.0
1)
Parameters serve as limitation of the adjustment range for the DHW temperature to be set at the
rotary switch
2)
Deactivation value T = 'DHW temperature' + 'Hysteresis'
3)
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
Summary of Contents for TROVIS 5573
Page 144: ...144 EB 5573 EN Key number 1732...
