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| Description: |
Fan shall be a spun aluminum and G90 Galvanized, roof or wall mounted, direct drive, downblast
centrifugal exhaust ventilator. Fans up to and including models with a 24" nominal wheel and a 2 HP motor are suitable for wall mounting. |
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| Certifications: |
Fan shall be ETL Listed and comply with UL705 (electrical) Standards and CSA Std C22.2, No 113.
Fan shall bear the AMCA certified ratings seal for sound and air performance. |
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| Construction: |
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| Housing |
| The fan discharge apron shall be constructed of heavy gauge aluminum and shall
be spun on an automatic lathe to provide consistent dimensions. Structural
components are formed, heavy gauge aluminum and G90 Galvanized attached to the fan base. The
discharge apron shall have a rolled bead for added strength.
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| Base |
| The base shall be constructed of galvanized steel for improved rigidity. Base corners shall be welded to provide strength and support for hinging and cleaning and to prevent leakage into the building. |
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| Wheel |
| The fan wheel shall be centrifugal backward
inclined and non-overloading. Wheels shall be balanced in two planes
and done in accordance with AMCA standard 204-96, Balance
Quality and Vibration Levels for Fans.
The wheel
blades shall be aerodynamically designed to minimize turbulence, increase
efficiency and reduce noise. The wheel blades shall be welded to the wheel
inlet cone. In the event that balancing weights are required they shall be
riveted to the blades or wheel. The wheel inlet shall overlap the fan base
inlet for maximum performance and efficiency. The wheel shall be firmly
attached to the motor shaft with two set screws.
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| Motor & Motor Compartment |
| Standard 115 volt, open drip motors shall be permanently lubricated, rated
for continuous duty and thermally protected. Motors shall be mounted out of
the airstream and furnished at the specified voltage, phase and enclosure.
Motor mounting plate shall be constructed of heavy gauge aluminum. The motor
compartment shall be cooled by outside air through louvers in the motor cap.
An integral electrical conduit running from the fan base to the motor compartment
is provided for ease of installation.
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| Product: Fan shall be model as manufactured by
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