To set up the system in a constant pressure application simply install the 4HS pump, connect the CM control module and wire the pressure sensor.

A small pressure tank is normally used to compensate for water loss while the pump is not running.

The control module receives the pressure signal from the pressure transducers and varies pump speed to maintain a constant set pressure regardless of water demand.

In addition to the constant pressure control, CM can also manage the following control modes:

• fixed frequency
• constant flow
• constant temperature