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Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not include the
effects of appurtenances (accessories).
The sound ratings shown are loudness values in fan sones at 1.5 m (5 feet) in a hemispherical free field calculated per AMCA International Standard 301. Values shown are
for installation type B: free inlet hemispherical sone levels.
26
BSQ 90 - Belt Drive
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0.125 0.250 0.500 0.750 1.000 1.500 1.750 2.000 2.250 2.500
90
90-4 1/4
1050
CFM 547 443
BHP 0.061 0.061
Sones 8.0 7.6
1211
CFM 655 574 333
BHP 0.092 0.095 0.084
Sones 9.8 9.1 8.3
1533
CFM 864 806 667 477
BHP 0.18 0.19 0.19 0.18
Sones 14.2 13.8 12.1 11.0
1694
CFM 965 914 798 654 437
BHP 0.25 0.25 0.26 0.25 0.22
Sones 16.0 15.8 14.4 13.1 12.3
90-3 1/3
1780
CFM 1019 971 863 734 562
BHP 0.29 0.29 0.30 0.30 0.28
Sones 16.7 16.5 15.6 14.4 13.7
1866
CFM 1072 1028 926 808 657
BHP 0.33 0.33 0.35 0.35 0.33
Sones 17.5 17.3 16.9 15.9 15.4
90-5 1/2 2136
CFM 1239 1202 1118 1024 917 638
BHP 0.49 0.50 0.51 0.52 0.52 0.47
Sones 21 21 21 19.9 19.2 18.4
90-7 3/4
2291
CFM 1334 1300 1223 1138 1045 811 668
BHP 0.61 0.61 0.62 0.64 0.65 0.61 0.58
Sones 23 23 22 22 21 20 20
2445
CFM 1429 1396 1326 1249 1167 976 844 707
BHP 0.73 0.74 0.75 0.77 0.79 0.77 0.73 0.70
Sones 25 25 24 25 23 22 22 23
90-10 1
2568
CFM 1504 1473 1407 1336 1258 1082 977 851 704
BHP 0.85 0.86 0.87 0.89 0.90 0.90 0.88 0.84 0.80
Sones 26 26 26 26 26 24 22 24 25
2691
CFM 1579 1549 1488 1420 1347 1186 1097 987 866 713
BHP 0.98 0.98 1.00 1.02 1.03 1.05 1.03 1.00 0.96 0.91
Sones 28 28 27 28 28 26 25 24 26 29
21
(533)
15
(381)
11
7
⁄8
(302)
15
(381)
1 (25)
*12
1
⁄2
(318)
*14
(356)
*15
1
⁄2
(394)
Damper size = 12 x 12 (305 x 305)
Unit weight** = 84 (38)
Housing thickness = 18 ga
MAX Bhp AT A GIVEN RPM = (rpm/2649)
3
MAXIMUM RPM = 2691
TIP SPEED (ft/min) = rpm x 2.928
MAX NEMA MOTOR FRAME SIZE = 145T
OUTLET VELOCITY (ft/min) = 1.0212 x cfm
0 500 1000 1500 2000 2500 3000
0
100
200
300
400
500
600
700
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
0 200 400 600 800 1000 1200 1400 1600 1800
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
1 hp
3/4 hp
1/2 hp
1/3 hp
1/4 hp
2691
2310
1930
1550
1170
790
RPM
HP
Density 0.075 lb/ft
3
Dimensions shown in inches (millimeters) and weight is shown in pounds (kilograms).
*Motor cover is optional. Size may be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.