Forced Charging - Siemens Synco 700 Basic Documentation

Settings
Storage tank tempera-
ture setpoint
Summary:
Starting forced charging
Ending forced charging
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Building Technologies
HVAC Products
Main menu > Settings > DHW > DHW
Operating line
Switching differential
Setback DHW setpoint bottom
In operating modes "Normal " and "Reduced ", the storage tank temperature setpoint
corresponds to the adjusted setpoint.
In Protection mode , the storage tank temperature shall not fall below the adjusted
setpoint. For this reason, the storage tank temperature setpoint will be raised by the
amount of the switching differential.
When the legionella program is active, it must be made certain that the storage tank will
be charged up to the legionella protection setpoint. To ensure this, the storage tank
temperature setpoint will be increased by the amount of the adjusted reduction of the
DHW setpoint at the bottom.
Operating state Assigned setpoint
Normal DHW setpoint = normal setpoint
Reduced DHW setpoint = reduced setpoint
Protection DHW setpoint = frost protection setpoint + switching differential
Legionella DHW setpoint = legionella protection setpoint + reduction of
DHW setpoint at the bottom

10.4.2 Forced charging

Normally, storage tank charging is started only when the storage tank temperature has
fallen below the switch-on point (storage tank temperature setpoint minus switching
differential). Forced charging can enforce charging even if this switch-on criterion is not
satisfied.
If forced charging is activated and the storage tank temperature lies at least 1 K below
the normal setpoint , forced charging will be started.
Charging will be ended via the storage tank temperature.
TStTaSetp
Norm
Red
ON
OFF
TStTaSetp
Norm
Red
ON
OFF
SDDhw Switching differential DHW heating
Norm DHW operating mode "Normal"
Push DHW push, forced charging triggered
Modular Heating Controller RMH760B
10 DHW heating
Range
1...20 K
0...20 K
SDDhw
Without forced charging
t
SDDhw
t
With forced charging
Red DHW operating mode "Reduced"
t Time
TstTa Temperature at the storage tank sensor
Factory setting
5 K
5 K
CE1P3133en
05.02.2007