Specification Sheet

434
*Weight is fan only (without accessories, motors, bases, drives, etc.)
ELEVATED TEMPERATURE DERATE
When elevated temperatures are encountered, maximum RPMs shown above must be derated according to the
following table.
CM
Model
Wheel
Diameter
(in.)
Wheel
Weight
(lbs.)
WR
2
(lbs-ft
2
)
Max. Wheel
RPM
Max. Motor
Frame Size
Fan Weight*
(lbs.)
10 10-1/16 4 0.600 3850 145T 62
12 12-11/16 11 1.90 3200 184T 89
14 14-7/8 13 3.56 2800 184T 102
16 16 18 5.22 2500 184T 119
18 17-15/16 24 9.73 2200 213T 160
20 20-3/16 31 16.85 1950 213T 188
22 22-7/16 42 26.10 1800 215T 269
24 25-3/16 59 41.77 1500 215T 340
27 28-1/4 84 78.31 1350 254T 549
30 31-7/8 108 132.18 1200 256T 739
36 35-5/8 140 200 1050 284T 959
Temperature
(
O
F)
Standard
Steel
70 1.00
Standard Temperature Range200 0.98
300 0.96
400 0.95
High Temperature Range500 0.90
600 0.86
ROTATION AND DISCHARGE
The direction of rotation is determined from the drive side of the fan. The direction of discharge is determined in accor-
dance with the diagrams below. The angle of discharge is referred to the horizontal axis of fan and designated in degrees
above or below such standard reference axis. Not all positions are available for all sizes, see chart below.
PHYSICAL DATA
MODEL CM
BELT DRIVEN UTILITY VENT SET
SIZE OPTIONS OF ROTATIONS TURN
UB TAU TH TAD DB BAD BH BAU CW CCW
10-24 • • • • • • • • • •
27-36 • • • • •
Clockwise
Upblast
Clockwise
Top Angular Up
Clockwise
Top Horizontal
Clockwise
Top Angular Down
Counterclockwise
Upblast
Counterclockwise
Top Angular Up
Counterclockwise
Top Horizontal
Counterclockwise
Top Angular Down
Clockwise
Bottom Horizontal
Clockwise
Bottom Angular Down
Clockwise
Downblast
Clockwise
Bottom Angular Up
Counterclockwise
Downblast
Counterclockwise
Bottom Angular Down
Counterclockwise
Bottom Horizontal
Counterclockwise
Bottom Angular Up