The circulator must ensure the required water flow rate against the total pressure losses of the network.

Flow rate

Calculated from the thermal power and the system's design ΔΤ.

Head pressure

Must cover piping, heat exchangers, filters, valves, and terminals.

Operating curve

The actual operation is determined by the intersection of the circulator curve with the system resistance curve.

Attention

An oversized circulator increases consumption and noise, while an undersized circulator leads to insufficient flow.