Greenheck SQ User manual

Centrifugal Inline Fans
Models SQ and BSQ
Direct and Belt Drive
April
2008

2
Greenheck’s model SQ and BSQ centrifugal inline fans feature a unique combination of installation
flexibility, rugged construction, ease of service, high efficiency, and
low sound levels. These compact inline fans are the ideal selection for
indoor clean air applications including intake, exhaust, return, or make-
up air systems where space is a prime consideration. The need for
costly square-to-round transition pieces are eliminated
reducing installation costs. The square housing design,
compact size, and straight-thru airflow also give the
system designer the flexibility to mount SQ and BSQ fans
in any configuration - horizontal, vertical, or at any angle.
 
(1,000 Pa) and 28,000 cfm (47,000 m3/hr).
 


performance seals.
 
 
assuring you the fans will provide many years of reliable performance
Greenheck Fan Corporation certifies the model SQ and BSQ
fans shown herein are licensed to bear the AMCA Seal. The
ratings shown are based on tests and procedures performed
in accordance with AMCA Publication 211 and Publication
311 and comply with the requirements of the AMCA Certified
Ratings Program. The certified ratings for models SQ and BSQ
are shown on pages 11 to 41.
*UL is optional and must be
specified. SQ and BSQ models are
listed for electrical (UL/cUL 705)
File no. E40001
Models SQ & BSQ
Centrifugal Square Inline Duct Fans
World Class Manufacturing
Greenheck’s skilled production workers use cost-effective
machines and unique dies, designed and built by our own
engineers to add innovative features and greater strength
to our centrifugal inline fans. Our advanced manufacturing
processes and quality control procedures always ensure

peace-of-mind you expect when you specify Greenheck,
our assembly inspectors test run and monitor every fan
before it leaves the factory. Results of these tests are kept
in permanent records for future reference.

3
The Greenheck Standard

input to remain the industry leader.
 

amp draw test.
 
with complete model number, mark, and unique serial
number for future identification.
 

Turn to our inline fans to meet your requirements for
applications in office buildings, schools, and hospitals to
name a few.
Quick Delivery and Quick Build Programs

configurations within our strategically located Greenheck warehouses.




needs dictating manufacturing time. Your custom product configuration
can be manufactured in one, three, five, or ten days and then shipped to

Leading Edge Technical Support
When you need extensive product or

information, our products are supported
by the industry’s best product literature,
electronic media, and computer aided

also find this information on our website at
www.greenheck.com
You can always count on personal service and expertise from our
national and international representative organization. To locate your
nearest Greenheck representative, call 715-359-6171 or visit our
website at www.greenheck.com





















5
Standard Construction Features

The fan housing is constructed of rigid structural
members and formed galvanized steel panels.




centrifugal wheel is utilized to deliver maximum

dynamically balanced.


for easy duct connection. The square design
provides a larger discharge area than tubular,
centrifugal, and vane axial fans; outlet velocities
are reduced for quieter operation.

The cabinet construction features two side

to all internal components. The access panels
have been removed on the drawing.



fasteners, sliding the motor plate, and retightening
fasteners.


motors are selected to provide years of trouble-
free operation with minimal maintenance.

100 percent factory tested and designed
specifically for air handling applications with a
1050


Drives are sized for a minimum of 150 percent



static free and oil resistant.


first critical speed is at least 25 percent over the

where the shaft makes contact with bearings
result in longer bearing life.


and wiring is provided from the motor as



disconnect switches are optional.

6
Options and Accessories


drive sizes 60-160 and belt drive sizes 70-300.



open motors on model
SQ fans. They provide
an economical means of
system balancing with
direct drive fans.


non-ducted applications. Guards are fabricated of
welded wire on a galvanized steel frame. They are
easily removed for maintenance and inspection.


and belt guards constructed of galvanized steel
are available for protection of motors, drives, and



available to isolate direct drive motors from the
airstream. When motor covers are furnished, vents
to the exterior of the fan are provided to ensure
sufficient motor cooling.



for duct mounting. These
dampers feature sturdy
galvanized frames with
prepunched mounting
holes, aluminum blades
with felt edges, and a
balanced design for
minimal resistance to
airflow.

Square, opposed blade volume control dampers

dampers feature sturdy galvanized frames with
prepunched mounting holes, steel blades with vinyl

design results in minimal resistance to airflow.

Wide variety of coatings
and colors are available.
Decorative coatings
are available in sixteen
standard colors.
 are
available in a choice of
five electrostatic applied
powders providing an
available selection for
most environments.

be found in the performance coatings catalog.



and are factory assembled to the fan. They can be
specified for either manual or automatic operation
with controls furnished by others. These dampers
are constructed of heavy gauge painted steel
and feature uniform blade movement for positive

connections are also available.


the interior of the fan housing can be lined with a

The optional motor cover can also be insulated.
The table depicts the dB reduction that can be
obtained in each octave band for the insulated
housing and motor cover together.


eliminating field wiring at the fan.

Octave Band 1 2 3 5678
Sizes 60 - 130 -2 -7 -4 -4 -6 -13 -13 -9
Sizes 140 - 420 -3 -2 -5 -4 -5 -5 -7 -8

7
The side discharge option provides several advantages
including removal of a system effect problem, increasing
performance, or even reducing installation labor. The

example in figure 1 showing the air being discharged

the airflow becomes smooth again after making the
turn. This is not the case with a side discharge. See
figure 2; when the air comes into the fan at the corner
and leaves the fan at the corner, the airflow is smoother
and provides a more predictable system. Remember the
duct length prior to or following the installation location
should be approximately two to three wheel diameters to
achieve catalog performance.
Discharge Configuration

direction as it was originally ordered. The performance
will change with different discharge positions. Right side
discharge will give you 108% of cataloged performance
and left side will give you 109% of cataloged



consult factory for performance modifications.
Side Discharge
SQ Side Discharge
Duct Openings
 Width 
60-75 97⁄8(251) 87⁄8(225)
80-95 127⁄8(327) 117⁄8(302)
100 137⁄8(352) 137⁄8(352)
120 157⁄8(403) 157⁄8(403)
130 177⁄8(454) 177⁄8(454)
140 197⁄8(505) 197⁄8(505)
160 227⁄8(581) 227⁄8(581)
BSQ Side Discharge
Duct Openings
 Width 
70-80-90 117⁄8(302) 117⁄8(302)
100 137⁄8(352) 137⁄8(352)
120 157⁄8(403) 157⁄8(403)
130-130HP 177⁄8(454) 177⁄8(454)
140-140HP 197⁄8(505) 197⁄8(505)
160-160HP 227⁄8(581) 227⁄8(581)
180-180HP 237⁄8(606) 237⁄8(606)
200-200HP 277⁄8(708) 277⁄8(708)
240-240HP 287⁄8(733) 347⁄8(886)
300-300HP 317⁄8(810) 417⁄8(1064)
360-360HP 327⁄8(835) 377⁄8(962)
420 347⁄8(886) 437⁄8(1114)
All dimensions in inches (millimeters).
Figure 2
Figure 1
Fan
Fan
Left Side
Discharge
Right Side
Discharge
Inline
Discharge
Inlet
Height
Width
Height
Left Side
Discharge
Right Side
Discharge
Inline
Discharge
Inlet Width
Figure 5
Figure 4
+12%
+9%
+8%
+12%
Figure 3 - Percentages based on cataloged performance.

8
Filter Options
The filter box is designed to provide a compact and convenient clean air solution.

designing, fabricating, and installing special remote filter box assemblies. Both
the fan and filter section feature removable access panels on both sides to
remove and replace filters, making fan maintenance simple and fast.
  BD WT.  
Quantity
SQ-60 - 75 221⁄8
(562)
12
(305)
87⁄8
(225)
1
(25)
40
(18)
10 x 12
(254 x 305) 1
SQ-80 - 95 455⁄8
(1159)
15
(381)
117⁄8
(302)
1
(25)
74
(34)
14 x 25
(356 x 635) 1
SQ-100 471⁄4
(1200)
17
(432)
137⁄8
(352)
1
(25)
88
(40)
16 x 20
(406 x 508) 2
SQ-120 523⁄16
(1326)
19
(483)
157⁄8
(403)
1
(25)
114
(52)
16 x 25
(406 x 635) 2
SQ-130 463⁄8
(1178)
21
(533)
177⁄8
(454)
1
(25)
120
(54)
20 x 20
(508 x 508) 2
SQ-140 523⁄8
(1330)
23
(584)
197⁄8
(505)
1
(25)
174
(79)
20 x 25
(508 x 635) 2
SQ-160 513⁄8
(1305)
26
(660)
227⁄8
(581)
1
(25)
246
(112)
20 x 20
(508 x 508) 4
BSQ-70 - 80 - 90 505⁄8
(1286)
15
(381)
117⁄8
(302)
1
(25)
117
(53)
14 x 25
(356 x 635) 1
BSQ-100 471⁄4
(1200)
17
(432)
137⁄8
(352)
1
(25)
120
(54)
16 x 20
(406 x 508) 2
BSQ-120 523⁄16
(1326)
19
(483)
157⁄8
(403)
1
(25)
144
(79)
16 x 25
(406 x 635) 2
BSQ-130 - 130HP 463⁄8
(1178)
21
(533)
177⁄8
(454)
1
(25)
140
(64)
20 x 20
(508 x 508) 2
BSQ-140 - 140HP 523⁄8
(1330)
23
(584)
197⁄8
(505)
1
(25)
181
(82)
20 x 25
(508 x 635) 2
BSQ-160 - 160HP 513⁄8
(1305)
26
(660)
227⁄8
(581)
1
(25)
294
(133)
20 x 20
(508 x 508) 4
BSQ-180 - 180HP 551⁄16
(1399)
28
(711)
237⁄8
(606)
11⁄2
(38)
344
(156)
20 x 25
(508 x 635) 4
BSQ-200 - 200HP 6611⁄16
(1694)
32
(813)
277⁄8
(708)
11⁄2
(38)
441
(200)
12 x 25
(305 x 635) 3
16 x 25
(406 x 635) 3
BSQ-240 - 240HP 687⁄8
(1749)
39
(991)
347⁄8
(886)
11⁄2
(38)
573
(260)
20 x 25
(508 x 635) 4
16 x 25
(406 x 635) 4
BSQ-300 - 300HP 721⁄8
(1832)
46
(1168)
417⁄8
(1064)
11⁄2
(38)
759
(344)
20 x 25
(508 x 635) 8
BSQ-360 - 360HP 791⁄4
(2013)
52
(1321)
477⁄8
(1216)
11⁄2
(38)
957
(434)
16 x 25
(406 x 635) 10
20 x 25
(508 x 635) 5
BSQ-420 931⁄8
(2365)
58
(1473)
537⁄8
(1368)
11⁄2
(38)
1185
(538)
16 x 25
(406 x 635) 5
20 x 25
(508 x 635) 10
Note: 24-inch side clearance is recommended for accessing and removing filters.
All dimensions in inches (millimeters) and weight (WT.) in pounds (kilograms).
Model Selection Procedure




preliminary model size selected in step 2 using
the equation:
 10,000 2

pressure drop and make a revised model


cfm
 1 in.



1 in.


2 in.


2 in.


SQ BSQ
60-65-70-75 — 186 318.06 251.1 303.18
80-85-90-95 70-80-90 21.8 37.278 29.43 35.534
100 100 8.72 14.9112 11.772 14.2136
120 120 5.58 9.5418 7.533 9.0954
130 130 5.58 9.5418 7.533 9.0954
140 140 3.57 6.1047 4.8195 5.8191
160 160 2.09 3.5739 2.8215 3.4067
— 180 1.34 2.2914 1.809 2.1842
— 200 0.77 1.3167 1.0395 1.2551
— 240 0.41 0.7011 0.5535 0.6683
— 300 0.33 0.5643 0.4455 0.5379
— 360 0.15 0.2565 0.2025 0.2445
— 420 0.13 0.2223 0.1755 0.2119
Model SQ Model BSQ
B
A
B
C
C
A
C
D
C
D
Optional cover varies
with motor size.
Recommend 24 in.
clearance.
D
D
B
A
B
C
C
A
C
D
C
D
Optional cover varies
with motor size.
Recommend 24 in.
clearance.
D
D

9
Horizontal and Vertical Mounting
Options
 
Figure 6
With a hanging mount, the motor may be
located on either top or bottom. The base
mount allows top motor location only. Both
provide access panel on two sides.
Figure 7
With either a hanging or base mount the
motor may be located on either side. The
base mount allows top access panels only.
Figure 8
Mounting brackets are turned 90° for vertical
mounting. Access panels are located on the
two sides adjacent to mounting brackets.
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
AC
C
A
E
AB
A
B
E
FF
CA
C
E
F
A
B
B
D
D
D
B
B
B
A
B
E
F
A
Model A B C D E F G H I J K L M N
SQ 60-75 105⁄8(270) 17 (432) 153⁄4(400) 87⁄8(225) 193⁄4(502) 7 (178)
2
(51)
13⁄8
(35)
51⁄2
(140)
2
(51)
13⁄8
(35)
2
(51)
63⁄4
(171)
25⁄16
(59)
SQ 80-95 131⁄4(337) 20 (508) 183⁄4(476) 117⁄8(302) 43 (1092) 273⁄8(695)
BSQ 70-90 185⁄8(473) 201⁄8(511) 183⁄4(476) 117⁄8(302) 485⁄16 (1227) 273⁄8(695)
SQ-BSQ 100 185⁄8(473) 221⁄8(562) 203⁄4(527) 137⁄8(352) 447⁄8(1140) 24 (610)
SQ-BSQ 120 185⁄8(473) 24 (610) 223⁄4(578) 16 (406) 493⁄8(1254) 281⁄8(714)
SQ-BSQ 130 185⁄8(473) 261⁄8(664) 243⁄4(629) 177⁄8(454) 44 (1118) 23 (584)
SQ-BSQ 140 195⁄8(498) 281⁄8(714) 263⁄4(679) 197⁄8(505) 501⁄16 (1272) 28 (711)
SQ-BSQ 160 231⁄2(597) 31 (787) 293⁄4(756) 227⁄8(581) 495⁄8(1260) 235⁄8(600)
2
(51)
13⁄8
(35)
51⁄2
(140)
2
(51)
13⁄8
(35)
2
(51)
63⁄4
(171)
25⁄8
(67)
BSQ 180 251⁄2(648) 331⁄2(851) 299⁄16 (751) 223⁄4(578) 529⁄16 (1335) 241⁄2(622)
BSQ 200 291⁄8(740) 37 (940) 333⁄4(857) 263⁄4(679) 643⁄16 (1630) 321⁄4(819)
BSQ 240 315⁄8(803) 441⁄4(1124) 403⁄4(1035) 337⁄8(860) 661⁄2(1689) 321⁄8(816)
BSQ 300 35 (889) 51 (1295) 473⁄4(1213) 407⁄8(1038) 691⁄8(1756) 313⁄8(797)
BSQ 360 383⁄4(974) 571⁄4(1454) 531⁄2(1359) 463⁄4(1187) 76 (1930) 3411⁄16 (881)
BSQ 420 471⁄8(1197) 63 (1600) 597⁄8(1521) 597⁄8(1521) 901⁄2(2299) 401⁄2(1029)
All dimensions in inches (millimeters).

knockouts are provided at each location where mounting brackets are shown in figures 6, 7, and 8. Optional


weight of the individual fan sizes. The hanging isolator support brackets are designed to permit mounting of
the fan with the motor located on top, bottom, or side. The hanging rods are to be supplied by others. The
base isolator support brackets are designed to permit mounting of the fan with the motor located on top or
either side.
 
 
M
K
J
L
H
N
H
G
Isolator I.D.-BVI
I
J
K
5/8 in. Nominal
M
K
J
L
H
N
H
G
Isolator I.D.-BVI
I
J
K
5/8 in. Nominal
M
K
J
L
H
N
H
G
Isolator I.D.-BVI
I
J
K
5/8 in. Nominal
M
K
J
L
H
N
H
G
Isolator I.D.-BVI
I
J
K
5/8 in. Nominal

10
Typical Installation
Flexible duct (by others)
3 Wheel
Diameters
3 Wheel
Diameters
Model Number Code

specified to designate belt or direct drive. The remainder of the model number is determined by the size
and performance selected from the following pages.
 (Belt Drive Only)

BSQ - 240 HP - 7

BSQ
SQ

60 through 
 (Belt Drive only)
   
  
 1⁄2 1⁄2
  
 (Direct Drive only)
  
   
  


diameters is required on the inlet and outlet of the fan to prevent system effect losses. See the diagram
below for a typical installation.


The model BSQ ducted inline fan must be installed with the motor accessible for maintenance and
inspection.


10

1
(25)
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
11
SQ 60-65 - Direct Drive
Damper size = 9 x 9 (229 x 229)
Unit weight** = 26 (12)
Housing thickness = 20 ga
Outlet velocity = 1.828 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
13
(330)
12
(305)
*87⁄8
(225)
12
(305)
0 50 100 150 200 250 300 350 400
0
10
20
30
40
50
60
70
80
90
100
110
0 50 100 150 200 250
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
SQ-65-D
SQ-65-G
SQ-65-E
400
250
SQ-60-E
SQ-60-D
SQ-60-G
RPM
Density 0.075 lb/ft3
 




0 0.05 0.1 0.125 0.15 0.2 0.25 0.3 0.35 0.375
 1/140 1050
CFM 126 101 78 63 42
BHP 0.005 0.006 0.007 0.007 0.006
Sones 1.7 1.7 1.8 1.8 1.9
SQ-60-G 1/80 1300
CFM 156 135 117 109 99 72 37
BHP 0.01 0.011 0.012 0.012 0.013 0.013 0.012
Sones 2.5 2.5 2.5 2.5 2.5 2.5 2.5
SQ-60-D 1/40 1550
CFM 186 168 153 145 138 122 105 78 47 31
BHP 0.017 0.018 0.019 0.02 0.02 0.022 0.022 0.021 0.02 0.019
Sones 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.1 4.1 4.1
 1/100 1050
CFM 154 129 98 79 56
BHP 0.007 0.008 0.009 0.009 0.008
Sones 2.1 2.0 2.0 1.9 1.9
SQ-65-G 1/50 1300
CFM 191 171 149 137 123 92 52
BHP 0.013 0.014 0.016 0.016 0.017 0.016 0.015
Sones 2.9 2.9 2.9 2.9 2.9 2.8 2.8
SQ-65-D 1/30 1550
CFM 228 213 194 184 175 153 128 101 66 46
BHP 0.022 0.023 0.026 0.026 0.027 0.028 0.028 0.027 0.025 0.023
Sones 4.2 4.1 4.1 4.0 4.0 3.9 3.8 3.7 3.6 3.5

1
(25)
12
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
0 100 200 300 400 500 600
0
10
20
30
40
50
60
70
80
90
100
110
0 50 100 150 200 250 300 350 400
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
SQ-75-D
SQ-75-G
SQ-75-E
SQ-70-E
SQ-70-G
SQ-70-D
RPM
Density 0.075 lb/ft3
Damper size = 9 x 9 (229 x 229)
Unit weight** = 26 (12)
Housing thickness = 20 ga
Outlet velocity = 1.828 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
SQ 70-75 - Direct Drive
 




0 0.1 0.125 0.15 0.2 0.25 0.3 0.35 0.375 
 1/100 1050
CFM 212 140 118 86
BHP 0.008 0.009 0.009 0.009
Sones 2.7 1.7 1.5 1.5
SQ-70-G 1/50 1300
CFM 262 204 190 176 139 77
BHP 0.015 0.018 0.018 0.018 0.017 0.015
Sones 4.1 3.4 3.3 3.1 2.9 2.5
SQ-70-D 1/30 1550
CFM 313 265 252 240 216 189 155 99 67
BHP 0.026 0.029 0.03 0.03 0.03 0.03 0.029 0.026 0.025
Sones 5.6 5.2 5.1 5.1 4.9 4.7 4.5 4.2 4.0
 1/100 1050
CFM 241 167 146 123
BHP 0.01 0.011 0.011 0.01
Sones 3.6 2.9 2.8 2.6
SQ-75-G 1/50 1300
CFM 298 239 224 209 176 133
BHP 0.019 0.021 0.021 0.021 0.02 0.019
Sones 4.1 3.7 3.7 3.7 3.6 3.5
SQ-75-D 1/30 1550
CFM 356 306 294 281 256 229 201 164 137 99
BHP 0.032 0.034 0.035 0.035 0.035 0.035 0.034 0.033 0.032 0.029
Sones 6.1 5.5 5.4 5.3 5.1 4.9 4.9 4.8 4.8 4.8
13
(330)
12
(305)
*87⁄8
(225)
12
(305)

1
(25)
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
13
SQ 80-85 - Direct Drive
0 200 400 600 800 1000
0
20
40
60
80
100
120
140
160
0 100 200 300 400 500 600
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
SQ-80-D
SQ-80-G
SQ-80-E
SQ-85-D
SQ-85-G
SQ-85-E
RPM
Density 0.075 lb/ft3
Damper size = 12 x 12 (305 x 305)
Unit weight** = 41 (19)
Housing thickness = 20 ga
Outlet velocity = 1.021 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
16
(406)
15
(381)
*117⁄8
(302)
15
(381)
 




0 0.1 0.125 0.2 0.25 0.3 0.375   0.5
 1/40 1050
CFM 306 241 225 166 104
BHP 0.011 0.014 0.015 0.017 0.016
Sones 3.8 3.7 3.6 3.8 4.1
SQ-80-G 1/20 1300
CFM 378 324 312 273 244 210 140
BHP 0.021 0.025 0.026 0.029 0.032 0.032 0.031
Sones 5.4 5.4 5.4 5.4 5.4 5.4 5.5
SQ-80-D 1/12 1550
CFM 451 405 394 363 342 318 280 266 238 201
BHP 0.035 0.039 0.041 0.045 0.047 0.051 0.055 0.055 0.055 0.055
Sones 7.3 7.3 7.3 7.3 7.2 7.3 7.3 7.4 7.5 7.6
 1/40 1050
CFM 357 291 272 206 142
BHP 0.012 0.016 0.017 0.018 0.017
Sones 4.0 3.9 3.9 3.9 4.0
SQ-85-G 1/20 1300
CFM 442 391 377 331 298 260 185
BHP 0.024 0.028 0.028 0.032 0.033 0.034 0.033
Sones 5.5 5.3 5.3 5.3 5.3 5.4 5.4
SQ-85-D 1/12 1550
CFM 528 485 474 439 413 386 343 327 294 254
BHP 0.04 0.045 0.046 0.049 0.052 0.054 0.056 0.057 0.057 0.057
Sones 7.6 7.4 7.4 7.4 7.4 7.4 7.4 7.5 7.5 7.6

1
(25)

Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
 




0 0.125 0.2 0.25 0.3 0.375  0.5 0.6 0.625
 1/50 1050
CFM 500 369 271 188
BHP 0.016 0.02 0.021 0.02
Sones 4.0 3.9 4.0 4.1
SQ-90-G 1/25 1300
CFM 619 519 449 397 343 245 207
BHP 0.03 0.036 0.039 0.04 0.04 0.038 0.037
Sones 5.4 5.4 5.4 5.5 5.5 5.6 5.6
SQ-90-D 1/10 1550
CFM 738 654 602 564 522 457 435 334
BHP 0.051 0.059 0.062 0.064 0.067 0.068 0.068 0.067
Sones 7.6 7.5 7.5 7.4 7.4 7.4 7.4 7.4
 1/30 1050
CFM 623 475 365 274
BHP 0.028 0.031 0.031 0.03
Sones 4.9 4.5 4.4 4.5
SQ-95-G 1/15 1300
CFM 771 659 579 522 461 352 311
BHP 0.053 0.057 0.058 0.059 0.059 0.057 0.056
Sones 7.6 6.7 6.5 6.4 6.4 6.4 6.4
SQ-95-D 1/8 1550
CFM 919 829 765 720 677 603 579 461 324 276
BHP 0.09 0.094 0.097 0.097 0.1 0.1 0.1 0.099 0.094 0.091
Sones 9.6 9.3 8.9 8.7 8.4 8.1 8.0 7.6 7.2 7.1
SQ 90-95 - Direct Drive
Damper size = 12 x 12 (305 x 305)
Unit weight** = 41 (19)
Housing thickness = 20 ga
Outlet velocity = 1.021 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
16
(406)
15
(381)
*117⁄8
(302)
15
(381)
0 200 400 600 800 1000 1200 1400 1600
0
20
40
60
80
100
120
140
160
180
0 100 200 300 400 500 600 700 800 900 1000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
SQ-95-D
SQ-95-G
SQ-95-E
SQ-90-E
SQ-90-G
SQ-90-D
RPM
Density 0.075 lb/ft3

1
(25)
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
15
SQ 100 - Direct Drive
0 500 1000 1500 2000 2500
0
50
100
150
200
250
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
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft3
17
(432)
*137⁄8
(352)
17
(432)
21
(533)
Damper size = 14 x 14 (356 x 356)
Unit weight** = 56 (25)
Housing thickness = 20 ga
Outlet velocity = 0.748 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
 




0 0.1 0.125 0.25 0.3 0.375 0.5 0.625 0.75 1
 1/8 860
CFM 725 637 611
BHP 0.027 0.03 0.03
Sones 4.7 3.8 3.7
SQ-100-B 1/6 1140
CFM 961 898 881 785 738 657
BHP 0.064 0.067 0.068 0.071 0.071 0.07
Sones 7.4 6.6 6.5 6.1 5.9 5.6
 1/4 1725
CFM 1454 1412 1402 1349 1326 1292 1227 1156 1077 830
BHP 0.22 0.23 0.23 0.23 0.24 0.24 0.24 0.25 0.25 0.22
Sones 13.1 12.6 12.4 11.9 11.7 11.5 11.1 10.7 10.4 9.6

1
(25)
16
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
0 500 1000 1500 2000 2500 3000
0
50
100
150
200
250
300
350
400
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
0 400 800 1200 1600 2000
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft3
SQ 120 - Direct Drive
 




0 0.125 0.25 0.375 0.5 0.625 0.75 1 1.25 1.375
 1/8 860
CFM 971 843 704
BHP 0.051 0.055 0.059
Sones 4.4 4.1 3.3
SQ-120-B 1/6 1140
CFM 1287 1189 1094 992 873 692
BHP 0.12 0.12 0.13 0.14 0.14 0.13
Sones 7.4 7.2 7.0 6.3 5.9 5.8
 1/2 1725
CFM 1948 1883 1818 1754 1692 1628 1562 1416 1239 1128
BHP 0.41 0.42 0.42 0.44 0.45 0.46 0.46 0.48 0.48 0.47
Sones 14.7 14.1 13.8 13.6 13.5 13.4 13.2 12.6 11.9 11.7
Damper size = 16 x 16 (406 x 406)
Unit weight** = 67 (30)
Housing thickness = 20 ga
Outlet velocity = 0.571 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
21
(533)
19
(483)
*157⁄8
(403)
19
(483)

1
(25)
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
17
SQ 130 - Direct Drive
0 500 1000 1500 2000 2500 3000 3500 4000
0
50
100
150
200
250
300
350
400
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
0 500 1000 1500 2000 2500
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft3
21
(533)
21
(533)
*177⁄8
(454)
21
(533)
Damper size = 18 x 18 (457 x 457)
Unit weight** = 67 (35)
Housing thickness = 20 ga
Outlet velocity = 0.451 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
 




0 0.125 0.25 0.375 0.5 0.625 0.75 1 1.25 1.375
 1/8 860
CFM 1180 1048 890
BHP 0.067 0.075 0.078
Sones 6.2 5.2 4.5
SQ-130-B 1/4 1140
CFM 1564 1471 1366 1248 1104 865
BHP 0.16 0.17 0.18 0.18 0.18 0.17
Sones 9.4 8.3 7.4 6.8 6.5 6.4
 3/4 1725
CFM 2368 2307 2247 2174 2105 2038 1961 1791 1559 1409
BHP 0.54 0.56 0.57 0.59 0.6 0.62 0.62 0.63 0.61 0.59
Sones 17.4 17.6 17.1 17.1 16.6 16.4 15.9 15.7 15.6 15.6

1
(25)
18
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
SQ 140 - Direct Drive
 




0 0.25 0.375 0.5 0.625 0.75 1 1.375 1.5 1.75
 1/8 860
CFM 1637 1316 1033
BHP 0.12 0.13 0.13
Sones 7.0 6.2 5.9
 1/3 1140
CFM 2170 1942 1818 1666 1446 1121
BHP 0.27 0.29 0.3 0.3 0.3 0.27
Sones 10.8 10.1 10.0 9.8 9.6 9.4
 1 1725
CFM 3283 3139 3065 2985 2905 2825 2645 2268 2085 1624
BHP 0.93 0.97 0.98 1 1.01 1.03 1.03 1.03 1.01 0.93
Sones 20 19.3 19.0 18.7 18.6 18.4 18.2 17.2 16.7 15.9
0 1000 2000 3000 4000 5000
0
100
200
300
400
500
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
0 500 1000 1500 2000 2500 3000 3500
0.0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft3
Damper size = 20 x 20 (508 x 508)
Unit weight** = 104 (47)
Housing thickness = 18 ga
Outlet velocity = 0.364 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
22
(559)
23
(584)
*197⁄8
(505)
23
(584)

1
(25)
Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
19
SQ 160 - Direct Drive
 




0 0.25 0.5 0.75 1 1.25 1.5 1.75 1.875 2
 1/4 860
CFM 2506 2147 1605
BHP 0.2 0.23 0.24
Sones 8.8 7.2 6.5
SQ-160-B 1/2 1140
CFM 3322 3061 2773 2388 1808
BHP 0.47 0.51 0.54 0.56 0.51
Sones 14.0 12.8 11.9 11.4 10.8
 2 1725
CFM 5027 4856 4683 4504 4312 4094 3845 3575 3414 3236
BHP 1.64 1.69 1.74 1.8 1.85 1.89 1.93 1.95 1.94 1.91
Sones 26 25 24 24 24 24 24 24 24 24
Damper size = 23 x 23 (584 x 584)
Unit weight** = 160 (73)
Housing thickness = 18 ga
Outlet velocity = 0.275 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
26
(660)
26
(660)
*227⁄8
(581)
26
(660)
0 2 4 6 8 10
0
100
200
300
400
500
600
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 1000 2000 3000 4000 5000 6000
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
Static Pressure in. wg
cfm
m3/hr X 1000
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft3

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.
20
BSQ 70 - Belt Drive
 




0.125 0.25 0.5 0.625 0.75 1 1.25 1.5 1.75 2
 1/4
1050
CFM 184 129
BHP 0.039 0.037
Sones 8.0 7.5
1313
CFM 251 211 117
BHP 0.077 0.076 0.068
Sones 11.0 10.4 9.2
1445
CFM 284 249 169 122
BHP 0.103 0.102 0.097 0.09
Sones 12.8 12.3 10.7 10.3
1577
CFM 314 284 213 175 131
BHP 0.13 0.13 0.13 0.12 0.12
Sones 14.9 14.6 12.7 11.9 11.4
1709
CFM 345 318 254 220 184 97
BHP 0.17 0.17 0.17 0.16 0.16 0.14
Sones 16.1 15.9 14.5 13.9 13.3 12.4
1840
CFM 375 351 293 262 231 159
BHP 0.21 0.21 0.21 0.21 0.2 0.19
Sones 17.3 17.0 16.4 16.0 15.4 14.5
1972
CFM 405 384 331 302 273 212 142
BHP 0.26 0.26 0.26 0.25 0.25 0.24 0.22
Sones 19.2 19.1 18.6 18.2 17.9 17.7 16.5
BSQ-70-3 1/3
2072
CFM 428 408 360 332 305 249 184 103
BHP 0.3 0.3 0.3 0.3 0.29 0.29 0.27 0.24
Sones 20 20 19.9 19.5 19.1 18.5 18.2 16.8
2172
CFM 450 431 387 361 335 282 224 161
BHP 0.34 0.35 0.35 0.34 0.34 0.33 0.32 0.3
Sones 21 21 21 21 20 19.7 19.2 18.8
BSQ-70-5 1/2
2329
CFM 486 467 428 406 381 332 283 225 166
BHP 0.43 0.43 0.43 0.43 0.42 0.42 0.41 0.39 0.36
Sones 23 23 23 23 23 22 21 20 21
2486
CFM 521 504 468 447 426 380 334 287 232 176
BHP 0.52 0.52 0.52 0.52 0.52 0.51 0.5 0.49 0.47 0.44
Sones 25 25 25 25 25 24 23 22 22 23
21
(533)
15
(381)
117⁄8
(302)
15
(381)
1 (25)
*121⁄2
(318)
*14
(356)
*151⁄2
(394)
Damper size = 12 x 12 (305 x 305)
Unit weight** = 76 (34)
Housing thickness = 20 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.
MAX Bhp AT A GIVEN RPM = (rpm/3084)3
MAXIMUM RPM = 2486
TIP SPEED (ft/min) = rpm x 2.928
MAX NEMA MOTOR FRAME SIZE = 145T
OUTLET VELOCITY (ft/min) = 1.0212 x cfm
0 200 400 600 800 1000
0
200
400
600
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
0 100 200 300 400 500 600
0.0
0.5
1.0
1.5
2.0
2.5
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
RPM
HP
Density 0.075 lb/ft3
1/2 hp
1/3 hp
1/4 hp
2486
2150
1810
1470
1130
790