COSMO High-efficiency pump CPH 2.0 51
8.1.2 Control modes
Depending on system requirements, CPH 2.0 circulation pumps offer the following
control modes. The required control mode is entered via the CPH 2.0 control panel.
Control with proportional differential pressure as a function of actual system flow:
Control with constant differential pressure:
With this control mode, the differential
pressure is increased or decreased,
depending on higher or lower water
demand. Setpoint Hs can be adjusted via
the external display.
This control mode is suitable for:
o Heating & air conditioning systems
with high pressure losses.
o Plants with a secondary differential
pressure controller.
o Primary circuits with high pressure
losses.
o
Domestic water circulation with
thermostatic valves in the riser pipes.
Pressing the "Mode" key for 20
seconds opens the "Extended
menu" with a choice of 6
proportional differential
pressure curves.
e.g. Radiators