Differential pressure ∆p-c
The control keeps the differential pressure generated by the pump constant over the permissible flow rate range at the set differential pressure setpoint Hset up to the maximum characteristic curve.
An optimised constant differential pressure control is available for the corresponding predefined applications.
Assuming a required delivery head to be set according to the design point, the pump variably adjusts the pump output to the required volume flow. The volume flow varies due to the open and closed valves on the consumer circuits. The pump output is adjusted to the requirements of the consumer load and the energy requirement is reduced.
Δp‑c is used in circuits with variable pressure and volume flows, e.g. underfloor heating or ceiling cooling. A hydronic balancing is required in all circuits mentioned.