Designation:
• to provide air overpressure in fire protection systems;
• to supply outdoor air in case of fire;
• to operate with a short air ducting network and, without it, in general ventilation systems.
Aerodynamic characteristics as per ISO 5801 (GOST 10921). Characteristics are given for normal atmospheric conditions (20?C, 760 mm of mercury). Dynamic pressure corresponds to the cross-section area of the fan’s outlet flange.
The fans can operate without power limitation within the entire capacity range.
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