The EC KMV series of roof-mounted fans incorporate very high efficiency electronically commutated DC motors with onboard infinitely variable control modules. These fans are AC powered with control and power conversion electronics integrated into the motor. Motor speeds can be controlled with a 0-10V input signal or 10K potentiometer.

The ability to control the speed at which the fan operates in response to real-time ventilation demands is the basis of our energy saver range. Fan power consumption changes to the cube of speed reduction while airflow reduction stays proportional to reduced speed. This means that tailoring fan speed to meet exact airflow requirements can greatly reduce energy consumption by removing redundant fan capacity.

Construction
Fabricated from powder-coated galvanised steel. Backward curved centrifugal impellers are matched with very high-efficiency DC external rotor motors incorporating sealed for life bearings.

Testing
Rated fan performance has been determined by testing to ISO 5801

Fan sound data has been determined by testing to ISO 13347

Wiring diagrams and latest data
Refer to the latest product datasheet for individual model wiring instructions, data and specifications. Datasheets are available from our electronic selection software fansSelect.