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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 27 Function block DRT and maximum limitation of the return temperature 27.05.2004
27.5 Integral action time of the limitation func-
tions
With the maximum limitations of the return temperature, the integral action time deter-
mines the rate at which the flow temperature setpoint will be reduced.
• Short integral action times lead to faster reductions
• Long integral action times lead to slower reductions
With this setting (on operating line 178), the impact of the limitation function can be
matched to the type of plant.