The centrifugal extraction fans shall be of the SEAT Fan
series as supplied by Fantech Pty. Ltd. and be of the
model numbers shown on the schedule/drawing.
The housings and impellers shall be made from high density,
UV treated polypropylene that is resistance to chemical
corrosion. Impellers shall be forward-curved and the cowl
preset to 1 of 8 discharge positions, rotated by
45° increments.
The centrifugal extraction fan shall be driven by a direct
drive motor and designed to operate with a variable speed
controller or variable speed drive.
They shall be fitted with inlet spigot and discharge flange,
and come standard with an epoxy coated metal stand.
Air flow test data shall be based on ISO5801:2017. Noise test
data shall be based on ISO 13347.