The fans are used:
• as a part of a smoke extraction system for air pressurization to create a positive air pressure differential in stairway enclosures, airlock vestibules and lift shafts, to prevent spreading of smoke in premises, protect people using evacuation routes from fire hazards and enable conditions for fire-extinguishing measures.
• for extraction of smoke in case of fire and removal of hot air outside.
• in general ventilation systems in industrial, administrative and residential buildings.
Design
The metal casing with rolled flanges helps achieve outstanding rigidity and minimum clearances between the casing and the blades.
There is an inspection hatch in the casing for easy maintenance.
All the casing components are powder coated for improved protection against the environmental effects.
The fan casing can be hot-dip galvanized on request.
The fan can be equipped both with a standard and a shortened casing.
Operation temperatures
The fans are rated for continuous operation at ambient air temperatures from -60 °C up to +50 °C (depends on climatic category, see the Designation key).
The fans are able to operate 2 hours at the temperatures +300 °C and +400 °C.
The fans with a fire resistance class of 200 °C/2 hours can be produced on special request.
Motor
The fans are equipped with three-phase (400 V, 50 or 60 Hz) single-speed or two-speed electric motors with IE3 energy efficiency class on request.
Motor ingress protection rating is IP55.
Power of applied electric motors:
• 4-pole – up to 132 kW, for fan size 1600 – 50 Hz.
• 6-pole – up to 90 kW, for fan size 1600 – 60 Hz.
Impeller
Aerodynamic impeller blades ensure high efficiency of the fan while keeping noise well under control.
The impellers are dynamically balanced.
Low weight and low moment of the impeller inertia help reduce the fan start-up time.
The fan blades can be made of the following materials:
• PAG – fiberglass reinforced polyamide for pressurization fans
• AL – die-cast aluminium for pressurization and smoke extraction fans
• ST – steel for smoke extraction fans
For smoke extraction fans, only impellers made of die-cast aluminium or steel are used, capable of operating according to the selected fire resistance class of the unit.
Please confirm the blade material while placing your order.
Mounting
The fans can be mounted on any flat surface or directly into a ventilation duct.
The units are suitable for both horizontal and vertical configurations.
In-duct installation requires flanges to attach the fan to the ductwork.
To attach the fan to the floor, a wall or the ceiling use the O-AF carriers (not included as standard, should be purchased separately).
The units are suitable for installation on rooftops to provide direct supply of outdoor air to the stairway areas.
Ficha técnica
Catalogue "Medium pressure axial fans and axial smoke extraction fans (1400 and 1600 mm)"
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