Specifications:
Air flow rate is based on the average air velocity through the hood curtain of 0.1 m/s assuming a height of no more than 1800mm.
If fans other than those supplied by Steelfort are used in the installation, care must be taken to ensure that the fan is capable of the extraction rates shown to achieve compliance with NZ Standard AS1668.2 2012.
Installation of the flue can affect the performance of the standard fan, especially if the flute is unusually long or contorted. Extraction rates can be limited by air flow in to the room, so try to ensure there is sufficient in-coming ventilation from windows and doors so as not to stall the fan.
The pressure frop through these unites at these air flow rates range from 70 Pa (clean filters) to 100+ Pa (dirty filters).
Fans fitted by Steelfort are fitted inside the extraction canopy and are sized for a vertical flue up to 3000mm in length with a Cowl. NB: Flue and Cowl are not supplied as standard, but can be supplied if requested.
Fans are supplied with a separate single phase 240 volt, 50 Hz speed regulator that can be fitted in a position to suit the installation and the electrical contractor will run the wires between fan and controller