Constant Curve (CC) is just another name for fixed speed, the older pumps had just 3 fixed speeds but the newer A rated ones have numerous settings including the 3 fixed speed (CC) curves, just ensure its on CC3, 6M, just ensure its showing the symbols in the attachment and setting 3, it probaby comes defaulting to that CC3 mode/setting anyway.
For interest, sometime, you might post the pump flowrate, m3/hr and the pump power, W which are displayed, post readings when on DHW and when on CH
For interest, sometime, you might post the pump flowrate, m3/hr and the pump power, W which are displayed, post readings when on DHW and when on CH
