Bsq 420 - belt drive – Greenheck Fan SQ User Manual
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Performance certified is for installation type B: Free inlet, Ducted outlet. Performance ratings do not include the effects of appurtenances (accessories). Power rating (Bhp)
does not include transmission losses.
The sound ratings shown are loudness values in fan sones at 1.5 m (5 feet) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
BSQ 420 - Belt Drive
50
(1270)
58
(1473)
53
7
⁄
8
(1368)
58
(1473)
1
1
⁄
2
(38)
*18
(457)
*22
(559)
*34
(864)
Damper size = 54 x 54
(1372 x 1372)
Unit weight** = 789
(358)
Housing thickness = 14 ga
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.
Model Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0.125
0.25
0.375
0.5
0.75
1
1.25
1.5
1.75
2
BSQ-420-20
2
270
CFM
9901
8281
BHP
0.68
0.7
Sones
6.0
3.3
349
CFM
13501 12428 11210
9592
BHP
1.41
1.48
1.51
1.49
Sones
9.4
8.7
8.1
7.8
389
CFM
15275 14340 13334 12132
BHP
1.93
2.02
2.08
2.09
Sones
13.2
12.3
11.5
10.8
BSQ-420-30
3
417
CFM
16500 15633 14714 13745 11026
BHP
2.37
2.46
2.53
2.58
2.52
Sones
16.6
15.7
14.8
13.9
12.5
445
CFM
17704 16910 16068 15188 12941
BHP
2.86
2.96
3.05
3.11
3.12
Sones
20
19.5
18.6
17.7
15.9
BSQ-420-50
5
487
CFM
19500 18801 18054 17257 15475 13113
BHP
3.71
3.84
3.95
4.02
4.11
4.03
Sones
22
21
21
19.8
18.2
16.9
528
CFM
21244 20625 19937 19231 17747 15850 13154
BHP
4.7
4.85
4.97
5.08
5.22
5.24
4.99
Sones
25
24
23
23
21
20
18.7
BSQ-420-75
7
1
⁄
2
566
CFM
22854 22301 21659 21017 19644 18080 16134 13026
BHP
5.76
5.94
6.07
6.19
6.36
6.46
6.39
5.95
Sones
28
27
26
25
24
24
22
21
604
CFM
24459 23950 23363 22762 21502 20206 18533 16581
BHP
6.98
7.17
7.32
7.45
7.66
7.83
7.84
7.71
Sones
31
30
30
29
28
27
26
25
BSQ-420-100
10
635
CFM
25765 25281 24743 24171 22996 21762 20341 18681 16692
BHP
8.09
8.29
8.46
8.6
8.85
9.03
9.12
9.09
8.88
Sones
35
33
33
32
31
30
30
29
28
670
CFM
27237 26778 26291 25749 24660 23491 22322 20793 19111 16873
BHP
9.47
9.69
9.88
10.03
10.33
10.52
10.71
10.7
10.61
10.24
Sones
39
37
36
36
34
34
34
33
32
31
MAX Bhp AT A GIVEN RPM = (rpm/304)
3
MAXIMUM RPM = 670
TIP SPEED (ft/min) = rpm x 11.060
MAX NEMA MOTOR FRAME SIZE = 215T
OUTLET VELOCITY (ft/min) = 0.0496 x cfm
0
10
20
30
40
50
0
200
400
600
DO
NO
T S
EL
EC
T
TO
T
H
E
LE
FT
O
F
TH
IS
S
Y
S
TE
M
C
U
R
VE
0
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
Static Pr
essur
e in. wg
cfm X 1000
m
3
/hr X 1000
Static Pr
essur
e Pa
10 hp
7 1/2 hp
5 hp
3 hp
2 hp
670
605
535
465
395
325
RPM
HP
Density 0.075 lb/ft
3