15820-2
VENTILATION FANS
be controlled by either a potentiometer dial mounted at the motor or by a 0-10
VDC signal.
C. Roof Curbs:
l.
2.
3.
4.
5.
6.
Required for all roof mounted fans unless an integral part of roof structure and
so shown on the Architectural Drawings.
18 inches high.
Supplied with fan.
Prefabricated all welded aluminum construction structurally reinforced to
support fan.
1% inch thick rigid fiberglass insulation.
Wood blocking when required for fan installation.
D. Inline Centrifugal Fans:
1.
wWPwWn
6.
7.
Acceptable Manufacturers
a. Greenheck Fan Corp.
b. Loren Cook, Co.
c. Pennbarry
d. Or approved equal.
Duct mounted, belt or direct driven as scheduled.
Fan wheels, aluminum backward inclined.
Housing, all aluminum construction.
Mounting brackets and vibration isolations required for wall mounting or
hanging from ceiling as shown.
AMCA certified for both air and sound performance.
Completely wired internally with leads brought to an external junction box.
E. Power Roof Ventilators; Upblast Type:
l.
6.
7.
Acceptable Manufacturers:
a. Greenheck Fan Corp.
b. Loren Cook, Co.
c. Pennbarry
d. Or approved equal.
Ventilator housings: Spun aluminum construction completely weatherproofed
and securely seated on and fastened to the roof curb.
Hood shall be designed with necessary wind bands, and venturi inlet to
provide a vertical upward discharge pattern.
Fan Wheels: Aluminum Centrifugal, backward inclined, non-overloading,
quiet-operating, statically and dynamically balanced.
Unit shall include motor and drive assembly cooling tube, and drainage area
with drain plug.
Gravity backdraft damper unless motorized damper is required and shown on
the Drawings.
Aluminum bird screen.
PART 3 - EXECUTION
3.1 INSTALLATION
A. Install as required in strict accordance with the manufacturer's instructions and
recommendations and as shown on the Drawings.
13089K
