Method for controlling a circulation pump

A circulation pump configured to be installed in a system for heating or cooling, wherein the system is equipped with one or more temperature-controlled valves and wherein the circulation pump comprises control electronics configured to carry out a method comprising:

• operating the pump at an operating point, wherein a current operating point is defined as an intersection point of an adaptable pump characteristic curve and a variable system characteristic curve, wherein the system characteristic curve varies with a common degree of openness of the one or more temperature-controlled valves, wherein the pump characteristic curve is adapted by setting a speed of the pump, wherein the speed of the pump is controlled such that the operating point follows an adjustable control curve;
• and
• adjusting the control curve when the system characteristic curve changes so as to keep the common degree of openness of the one or more temperature-controlled valves in a desired range between a minimum common degree of openness and a maximum common degree of openness, wherein adjusting the control curve comprises determining a system variable that is susceptible to system characteristic curve changes, and using the system variable as an input to provide a feed forward signal to adjust the control curve in a feed forward control.