Siemens RVD230 - Minimum Limitation of the Flow Temperature

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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 15 Function block Valve actuator heating circuit 27.05.2004
Maximum limitation is not a safety function; for that purpose, a thermostat, thermal
reset limit thermostat or similar must be used.
15.5 Minimum limitation of the flow temperature
The minimum limit value is to be set on operating line 96. The setting range for the
minimum limit value lies between 8 °C and the maximum limit value (setting on operat-
ing line 95).
At the limit value, the heating curve runs horizontally. This means that the flow tem-
perature setpoint cannot fall below the minimum value.
Minimum limitation of the flow temperature also acts in the case of plant type 8–4.
This function can be deactivated (entry of --- on operating line 96).
Note