New ventilation units with improvements in tightness, robustness, ease of installation, and reparability. Ventilation units with low noise levels, made with aluminum profiles and sandwich-type panels, featuring 25 mm thick, non-flammable (M0) acoustic insulation made of fiberglass, backward-curved centrifugal impellers dynamically balanced. Brushless EC direct current motor, high efficiency, low consumption, ball bearings, built-in thermal protection, and capable of operating at temperatures from -20ºC to +40ºC: - Single phase version 230V±10% 50/60Hz, IP44. - Three phase version 400V±10% 50/60Hz, IP54. Speed fully adjustable via potentiometer located in the terminal box or via external control like the REB-ECOWATT. Analog input to control the fan with an external 0-10V signal.
Attributes
Backward curved centrifugal impellers To prevent accumulation of dirtiness. Dynamically balanced.
Low noise level Internally lined with 25mm thickness of fireproof acoustic fiberglass insulation (M0) reducing the noise level significantly.
Robustness Quality finished aluminium profiles and plastic corners providing a great robustness.
IP55 external terminal box To facilitate electric.