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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 11 Function block Plant configuration 27.05.2004
The d.h.w. flow temperature setpoint should be maintained as accurately as possible,
allowing the storage tank can be fully charged in one go. At the beginning of d.h.w.
heating, the storage tank charging pump starts at minimum speed until the d.h.w. flow
temperature setpoint is reached. Then, the pump speed is continuously increased.
During the charging process, the storage tank charging pump reduces its speed only if
there is not sufficient heat available.
The storage tank charging pump is controlled according to the d.h.w. flow temperature.
The following setpoints and actual values are used:
Plant type Actual value (sensor) Setpoint
x–6, 3–7, x–8, x–12 B3 Current d.h.w. setpoint
2–7, 6–7, x–10
B12 Current d.h.w. setpoint
Control of the storage
tank charging pump
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