Parameters
WE
Parameter settings
Max. adjustable DHW set point
60.0 °C
DHW–PA4–02 / 5.0 to 90.0 °C
Hysteresis
5.0 °C
DHW–PA4–03 / 1.0 to 30.0 °C
Charging temperature boost
10.0 °C
DHW–PA4–04 / 0.0 to 50.0 °C
Max. charging temperature
80.0 °C
DHW–PA4–05 / 20.0 to 130.0 °C
Lag time for storage tank charging pump
90 s
DHW–PA4–06 / 0 to 600 s
DHW day set point
55.0 °C
Refer to section 3.1
DHW night set point
40.0 °C
7.2
DHW heating in the storage tank charging system
Start storage tank charging
The controller begins charging the storage tank when the water temperature measured at sen-
sor S7 falls below the 'DHW day set point' by 0.1 °C. If the flow temperature in the system is
higher than the desired charging temperature (= 'DHW day set point' + 'Charging temperature
boost'), the controller tries to reduce the flow temperature in the heating circuit for up to fives
minutes before the heat exchanger charging pump M2+ is activated together with the storage
tank charging pump P3.
When there is no heating operation or when the flow temperature in the system is lower, the
heat exchanger charging pump M2+ is switched on immediately. If the temperature currently
measured at storage tank sensor S7 is reached at the flow sensor S1, or after five minutes at the
70
EB 5610 EN
Functions of the DHW circuit
WW
KW
P1
S3
S1
S4/S5
S6
P3
S8
P2
S7
S2
M2+
Fig. 5 · Schematics of a storage tank charging system
M2+
Heat exchanger charging pump
P2
Circulation pump
P3
Storage tank charging pump
S1
Flow sensor
S7
Storage tank sensor (top)
S8
Storage tank sensor (bottom)
WW
Hot water
KW
Cold water
Summary of Contents for trovis 5600
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