Charging of the storage tank finishes when the drinking water temperature in the storage tank
reaches the temperature Drinking water heating OFF or the value preset at the storage tank
thermostat. With the default setting FB19 = OFF, the control valve of the drinking water circuit is
closed for this purpose.
The storage charging pump is deactivated when the charging temperature has dropped below
the value set in the parameter End charging process, or at the latest, after two transit periods of
the control valve in the drinking water circuit 2xTy have elapsed.
With the setting FB19 = ON Circulation via the heat exchanger the control of the charging
temperature is retained, if required, after intermediate reduction of the charging temperature as
set in the parameter End charging process.
5.6 System code number 6.0
Weather-compensated flow temperature control with variable limitation of the return flow tem-
perature and drinking water heating from the primary circuit, designed as system with instanta-
neous water heater
Fig. 21
⋅
Anl 6.0
(system code number 6.0)
30
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