Energy recovery ventilation system with a high-quality aerodynamically durable shaped casing. Airtight mounting box. Duct fan is easily mountable.
Single-phase external rotor motor with a centrifugal impeller with backward curved blades. Equipped with ball bearings for longer service life, and dynamically balanced turbine. Integrated thermal protection with automatic restart. Some standard sizes have high-powered motors (Centro Max). For energy recovery ventilation of premises with high requirements to noise level, low-noise modifications are available (Centro L).
Smooth speed control with a built-in electronic speed controller, with an external thyristor controller, or step speed control with an external auto transformer (both available upon separate order).
Due to impact design this duct fan is the ideal solution for mounting in limited spaces. Wall or ceiling mounting with fixing brackets supplied as a standard, or with a wire frame (Halter Centro). Flexible air ducts are fixed on the duct fan spigots with clamps.