Specification Sheet
292
Type: UTILITY VENT SET
Type of Wheel: Backward Inclined
Rotation: CW and CCW
Sizes: 10, 12, 14, 16, 18, 20, 22, 24, 27, 30
Housing & Drive Frame Structure
The entire housing is constructed from heavy-gauge
galvanized steel for excellent weather resistance.
The angle reinforced side sheets are bonded to
the fan scroll with a precise lock seam. The exible
design is available in either CW (clockwise) or CCW
(counterclockwise) rotation and the housing is eld
rotatable to 8 discharge positions.
Housing supports, reinforcements, and structural
members are formed from heavy-gauge galvanized
steel. Robust drive frame members support the motor,
shaft and bearings and provide a rigid foundation for
the housing assembly.
Wheel
The backward inclined non-overloading centrifugal
wheel is constructed of a heavy-gauge steel material
with single thickness blades securely welded to a
heavy-gauge backplate and wheel cone. Each wheel
is statically and dynamically balanced to ISO 1940 and
AMCA 204-G2.5 Standards.
Shaft and Bearings
Turned, ground and polished allow steel shafts sized
so the rst critical speed is at least 30% over the
maximum operating speed. Standard bearings are
heavy-duty, self-aligning pillow block ball bearings
with minimum L10 life in excess of 100,000 hours at
maximum cataloged operating conditions.
Motors
Heavy-duty ball bearing motors are factory mounted
on an adjustable base for ease of service and belt
maintenance. Standard motor enclosures are Open
Drip Proof (ODP), Totally Enclosed Fan Cooled (TEFC),
in both standard and premium efciency.
Drives
V-belt drives are selected for a minimum safety factor
of 150% of the driven horsepower. Cast iron motor
pulleys are adjustable for nal system balancing and
are factory set to the required RPM range. Dual groove
v-belt drives are standard for motors 5 HP thru 10 HP.
Three groove v-belt drives are standard on 15 HP units.
Temperature
Standard operating temperature range for cULus
705 is -20°F to 200°F, and for fans with cULus 762
construction the range is -20°F to 400°F.
cULus 762 Fan Installation
Model BVS is available with the 762 grease listing
from UL. The fan will operate with continuous
airstream temperatures of 400°F. Per NFPA 96, the
fan discharge must be at least 40 inches above the
roof line and the roof duct must be of all welded
construction with a minimum distance of 18 inches
above the roof line.
MODEL BVS
BELT DRIVEN UTILITY VENT SET
CONSTRUCTION/SPECIFICATION CHECKLIST