Greenheck Fan SQ-BSQ User Manual

Centrifugal Inline Fans

Models SQ and BSQ

Direct and Belt Drive

®

April

2012

Models SQ and BSQ

Centrifugal Square Inline Duct Fans

Table of Contents

Standard Construction Features ........4-5

Vari-Green Motor & Control Options .....6-7

Options and Accessories ................8

Filter Options .........................9

Discharge Configurations............10-11

Mounting Options.....................12

Isolators ............................13

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 15 to 45.

Typical Installation ....................14

Model Number Code ..................14

Direct Drive.......................15-23

Belt Drive ........................24-45

Specifications.....................46-47

Quick Delivery .......................48

Warranty ............................48

UL is optional and must be
specified. SQ and BSQ models are
Listed for Electrical (UL/cUL 705)
File no. E40001

2

Models SQ and BSQ

Centrifugal Square Inline Duct Fans

Model Comparison

Location Mounting Airflow Application

Model

Outdoor

Indoor

Roof Curb

Base/Floor

Hanging

Wall

Ceiling Mounted

Exhaust

Supply

Reversible

Recirculate

General/Clean Air

SQ

BSQ

          

          

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 is
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.

• Broadest performance in the industry, up to
4 in. wg (1,000 Pa) and 28,000 cfm (47,000 m3/hr).

• Performance as cataloged is assured. All fan sizes
are tested in our AMCA Accredited Laboratory, and
all models are licensed to bear the AMCA Sound
and Air Performance seals.

• UL Listed for Electrical.

• These Greenheck products are subjected to

extensive life testing to assure the fans will provide
many years of reliable performance.

Over the years Greenheck has listened to your needs
and input to remain the industry leader.

• Each fan is tested at the factory prior to shipping.
The test includes vibration check, adjusting RPM
and maximum amp draw.

Contaminated Air

Spark Resistant

Grease (UL 762)

Smoke Control (UL)

Drive

Type

High Wind (150 mph)

High Temp (above 200°F )

Belt

Impeller

Direct

Type

Centrifugal

Propeller/Axial

Mixed Flow

Performance

Maximum Volume

(cfm)

Maximum Static Pressure

(in. wg)

5,000 2 $

27,200 4 $

• Each fan displays a permanently stamped metal
nameplate with complete model number, mark and
unique serial number for future identification.

• Packaged-product is tested in accordance with
ISTA (International Safe Transit Association)
standards and procedures.

Turn to our inline fans to meet your requirements for
applications in office buildings, schools and hospitals
to name a few.

Relative Cost

3

Standard Construction Features

3

5

Model SQ Direct Drive

4

1

2

Model BSQ Belt Drive

5

2

9

7

4

3

6

8

1

4

Standard Construction Features

1 Cabinet Construction

The fan housing is constructed of rigid structural
members and formed galvanized steel panels.
(Aluminum construction is optional in all SQ
sizes 60-160 and in BSQ sizes 70-300).

2 Drive Frame

Constructed from heavy-gauge steel.

3 Wheel

An aluminum, backward inclined, non­overloading centrifugal wheel is utilized to
deliver maximum efficiency. Each wheel is
statically and dynamically balanced.

4 Duct Collars

Inlet and discharge duct collars are provided
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.

5 Motor

Permanently lubricated, sealed ball
bearing motors are selected to provide
years of trouble-free operation with
minimal maintenance.

6 Bearings

100 percent factory tested bearings are
designed specifically for air handling
applications with a minimum L10 life in excess
of 100,000 hours (L50 average life in excess
of 500,000 hours).

Drive Assembly

7

Drives are sized for a minimum of 150 percent
of driven horsepower. Machined cast iron
pulleys are factory set to the required RPM and
adjustable for final system balancing. Belts are
static free and oil resistant. Belt adjustment is
accomplished by loosening fasteners, sliding
the motor plate and retightening fasteners.

8

Fan Shaft

Fan shafts are precisely sized, ground and
polished so the first critical speed is at least
25percent over the maximum operating speed.
Close tolerances where the shaft makes contact
with bearings result in longer bearing life.

9

Disconnect Switch

NEMA-1 disconnect switch is factory-mounted
and wiring is provided from the motor as
standard. All wiring and electrical components
comply with the National Electric Codes and
materials are UL Listed. Other NEMA enclosure
disconnect switches are optional.

Access Panels (not shown on images)

The cabinet construction features two
removable access panels permitting easy
access to all interior components.

5

Vari-Green® Options

Vari-Green® Motor - Model SQ

Greenheck’s
electronically

commutated (EC)
Vari-Green (VG) motor
combines motor
technology, controllability
and energy-efficiency into
one single low maintenance
unit and is the industry’s first
fully controllable motor. When combined with
Greenheck’s SQ fans, all the CFM and static pressure
ranges of a belt drive can be attained with the
benefits of a direct drive.

The Vari-Green motor is available in:

• 1/6 - 3/4 horsepower 115 volt only.

• 1 horsepower 115/208-230 volt.

• 2 horsepower 208-230 volt.

All motors are available in a 50/60 Hz power.

Benefits

Operates on AC power that’s converted to DC—
providing a more efficient motor operation as
compared to an AC operation.

• The motor can attain up to 85% efficiency and

reduce energy consumption.

• Watt savings of 30-70% depending on RPM.

Note: As motor speed is turned down, efficiency stays

high as compared to an AC motor that decreases
dramatically.

• Operates cooler than a standard AC motor at lower

RPMs. A cooler motor has longer motor life and
reduces energy consumption.

• 80% usable RPM turndown vs. 30%. (chart at right)

• SQ fans with Vari-Green motors can provide all

the CFM and static pressure ranges of a
comparable belt drive.

• Maintenance costs are reduced as there are

no belts or bearings to replace and no pulleys
to adjust.

• Direct drive fans are often preferred where

maintenance access is difficult.

• The Vari-Green provides a solution for demand

controlled ventilation applications.

Vari-Green Advantages

• Initial cost is similar to a belt drive

• Lower operating cost

• No maintenance, no belts, pulleys or bearings

• Easy RPM adjustment

Features

1. Dial on Motor Control - A potentiometer (dial on

motor control) is mounted on the motor for easy
speed adjustment for system balance. Simply turn
the dial there are no belts and pulleys to adjust.

2. Control Wire Inputs - the motor accepts a

0-10V DC signal from Building Automated
Systems, Vari-Green Controls or other

®

controls to adjust motor speed.

1

2

Comparisons: Belt, Direct Drive with PSC

and Direct Drive with Vari-Green

Motor Turndown Comparison

600

500

400

300

200

INPUT POWER (WATTS)

100

0

0 350

BSQ is a belt driven fan

*

The length of each curve indicates the practical turndown range.
Data is for 1/2 hp motors with load of 0.35 Bhp at full speed







Constant Volume Life Cycle Analysis

Three Year Cost Comparison

$

2,500

2,250

2,000

1,750

1,500

1,250

1000

750

500

250

$

0

BSQ-

120

Initial Cost
Maintenance cost over three years
Operating cost over three years

120-A5

50% 75% 100%

SQ-120

with PSC









Not recommended

BSQ-120

Single Phase*



SQ-



FAN SPEED (RPM)





SQ-

120-VG





SQ-120 with

Analysis is based
on operating costs
for a period of three
years where the fans
operate continuously
at 1725 rpm, 24/7,
with an energy
rate of $0.10/kWh.
Maintenance on the
SQ-120 is estimated
at $65/yr.

Note: Example is
based on a relative
cost. Use and
installation variables
may produce
different results.





Energy Savings











1750

6

Vari-Green® Options

Demand Control Ventilation for
Multistory Buildings

Applications requiring constant pressure or variable
volume can utilize SQ fans with Vari-Green motors
and Vari-Green controls.
Demand control
ventilation systems
reduce the amount
of energy used by
decreasing the speed of
the fan when demand
is low. This in turn
lessens the amount
of conditioned air
exhausted and further
reduces total operating
costs associated with
air conditioning and
heating in multistoried
buildings such as: hotels,
multifamily complexes,
institutional facilities,
and high rise commercial
buildings.

Variable Volume
Operating Cost Analysis

Variable Volume vs. Constant Volume

$

2,000

1,750

1,500

1,250

1000

750

500

250

$

0

Variable

Volume

Heating Cost
Cooling Cost
Fan Operating Cost

Example of potential savings
based on a northeast city in
the USA using Vari-Green
components for variable volume.

Constant

Volume

The Vari-Green constant pressure control is pre­programed and easy to install for applications that
include: venting dryers, bathrooms, residential type
kitchen space or industrial process exhaust.

Contact [e-mail] for more information.

Daily Operating Comparison:
Variable Volume and Constant Volume

Hypothetical

Variable Volume - Load Shape

100

$$$$$$$$$$$$$$$$$$$$$$$$

80

$$$$$$$$$$$$$$$$$$$$$$$$

60

$$$$$$$$$$$$$$$$$$$$$$$$

40

$$$$$$$$$$$$$$$$$$$$$$$$

20

$$$$$$$$$$$$$$$$$$$$$$$$

0%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

% of Operation

Series 1

Demand controlled ventilation offers significant energy savings by

exhausting only the necessary amount of air throughout the day.

Constant Volume - Load Shape

100

80
60
40
20

0%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

% of Operation

Series 2

Note: A standard VFD compatible motor can also function within a
variable volume system.

(Hotel Bathroom)

Time of Day

Time of Day

Vari-Green® Controls

Transformer - Provides 24V power from the existing

line voltage at the fan to the Vari-Green motor and
controls. Dual voltage primary (120/240V) transformer
provided with the fan.

Remote Dial - Allows for remote, manual airflow
adjustments. Wall plate with dial may be mounted in a
standard 2x4 inch electrical junction box.

Two Speed Control with Integral Transformer

Control allows motor rpm to be set at two
independent speeds (high or low). Meets minimum
airflow requirements with the ability to bump up to
high speed in emergency or meet maximum airflow
requirements, or reset down to low for energy
conservation.

Constant Pressure Control-Indoor - Control Vari­Green motor via static (variable volume) or velocity
(constant CFM) pressure on the inlet or outlet side of
the fan. Optional, one or two, duct or room probes for
use in:

• Multifamily structures - Apartments, condos, hotels;

dryers, residential kitchens and bathrooms.

• Institutional facilities - Schools, prisons,

multistory office buildings; bathrooms.

Constant Pressure Control-Outdoor

(previously referred to as GreenVent)

Control Vari-Green motor via static pressure on the
inlet side of the fan. Includes one duct probe and
transducer for use in:

• Multifamily structures - Apartments, condos, hotels;
residential kitchen, dryer facilities and bathrooms.

• Institutional facilities - Schools, prisons, multistory.

Air Quality – VOC - Control a Vari-Green motor via
changes in volatile organic compounds (VOC’s).
VOC’s are gasses that are emitted from humans,
building materials, perfumes, foods, and furniture
off-gassing. Range is 0-2000 CO

ppm equivalent.

2

• Institutional facilities – Schools, court house,
hospitals; bathrooms, waiting rooms, cafeteria.

• Commercial buildings – Office space, conference
rooms, bathrooms, break room.

Air Quality – Temperature and Humidity - Control
Vari-Green motor via changes in temperature,
humidity, or both. Range is 32 to 120°F and 0 to 100%
relative humidity.

• Multifamily structures – Apartments, condos, hotels;
bathrooms, utility rooms.

• Commercial buildings – Office buildings; office
space, conference rooms, utility rooms, bathrooms.

7

Options and Accessories

Aluminum Construction

Aluminum construction is available for all direct drive
sizes 60-160 and belt drive sizes 70-300. Some
drive frame components may still be of galvanized
construction to maintain structural integrity.

Speed Controllers

Available for use with
shaded pole and permanent
split capacitor (PSC) motors
on model SQ fans. They
provide an economical
means of system balancing
with direct drive fans.

Inlet and Outlet Guards

Inlet and outlet guards provide protection for non­ducted applications. Guards are fabricated of welded
wire on a galvanized steel frame. They are easily
removed for maintenance and inspection.

Belt Drive Motor Cover and Belt Guard

For belt driven fans, combination motor cover
and belt guards constructed of galvanized steel
are available for protection of motors, drives and
personnel. Standard on units specified with UL.

Direct Drive Motor Cover

Formed, galvanized steel motor covers are 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.

Backdraft Dampers

Gravity or motorized
parallel blade dampers
(model WD-330) are
available for duct
mounting. These
dampers feature sturdy
galvanized frames,
aluminum blades with
vinyl blade seals, and
a balanced design for
minimal resistance to
airflow.

Control Dampers

Square, opposed blade volume control dampers
(model VCD) are available for duct mounting. These
dampers feature sturdy galvanized frames, and
steel blades with optional blade and jamb seals.
A balanced design results in minimal resistance to
airflow.

Coatings

Wide variety of coatings
and colors are available.

Decorative coatings

are available in sixteen
standard colors.

Protective coatings are

available in a choice of
five electrostatic applied
powders providing an
available selection for
most environments.

All Greenheck coatings
and resistance charts can be found in our
Performance Coatings for Commercial & Industrial
Fans brochure.

Inlet Vane Dampers

Variable inlet vane dampers (model IVDE) are
available for models SQ and BSQ sizes 140-420
and are factory-assembled to the fan. They can be
specified for either manual or automatic operation
(controls furnished by others). These dampers are
constructed of heavy-gauge steel and feature uniform
blade movement for positive control. Companion inlet
rings for round duct connections are also available.

Insulated Housing

For noise reduction and condensation control, the
interior of the fan housing can be lined with a 1-inch
fiberglass duct liner. The optional motor cover can
also be insulated.

The table depicts the radiated sound reduction that
can be obtained in each octave band for the insulated
housing and motor cover together.

Approximate Radiated Sound Attenuation (dB)

Octave Band 1 2 3 4 5 6 7 8

Sizes 60 - 130 -2 -7 -4 -4 -6 -13 -13 -9

Sizes 140 - 420 -3 -2 -5 -4 -5 -5 -7 -8

Wiring Pigtail

Allows direct hook-up to the power supply eliminating
field wiring at the fan.

8

Filter Options

The filter box is designed to provide a compact and convenient clean
air solution. Factory-assembled as a single unit, this fan eliminates
the costly process of 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.

Model Selection Procedure

1. Calculate system pressure drop and cfm requirements
(not including filters).

2. Make a preliminary model size selection.

3. Calculate a filter pressure drop (P) for the preliminary
model size selected in step 2 using the equation: P = F x (

To determine the filter factor (F) refer to chart below.

•

4. Add the filter pressure drop (P) to the system pressure drop and make a revised model size selection.

cfm

10,000

2

)

Fan

Size

Model

60 - 75

80 - 95

100

120

130

Model SQ

140

160

70 - 80 - 90

100

120

130 - 130HP

140 - 140HP

160 - 160HP

180 - 180HP

200 - 200HP

Model BSQ

240 - 240HP

300 - 300HP

360 - 360HP

420

Note: 24-inch side clearance is recommended for accessing and removing filters.

All dimensions in inches (millimeters) and weight in pounds (kilograms).

Filter Box

Weight

40

(18)

74

(34)

88

(40)

114

(52)

120

(54)

174

(79)

246

(112)

117

(53)

120

(54)

144

(79)

140

(64)

181

(82)

294

(133)

344

(156)

441

(200)

573

(260)

759

(344)

957

(434)

1185

(538)

Filter Size

10 x 12

(254 x 305)

14 x 25

(356 x 635)

16 x 20

(406 x 508)

16 x 25

(406 x 635)

20 x 20

(508 x 508)

20 x 25

(508 x 635)

20 x 20

(508 x 508)

14 x 25

(356 x 635)

16 x 20

(406 x 508)

16 x 25

(406 x 635)

20 x 20

(508 x 508)

20 x 25

(508 x 635)

20 x 20

(508 x 508)

20 x 25

(508 x 635)

12 x 25

(305 x 635)

16 x 25

(406 x 635)

20 x 25

(508 x 635)

16 x 25

(406 x 635)

20 x 25

(508 x 635)

16 x 25

(406 x 635)

20 x 25

(508 x 635)

16 x 25

(406 x 635)

20 x 25

(508 x 635)

Filter

Quantity

Aluminum Paper Filters (MERV 7) Aluminum Paper Filters (MERV 8)

1 186 318.06 251.1 303.18

1 21.8 37.28 29.43 35.53

2 8.72 14.91 11.77 14.21

2 5.58 9.54 7.53 9.10

2 5.58 9.54 7.53 9.10

2 3.57 6.11 4.82 5.82

4 2.09 3.57 2.82 3.41

1 21.8 37.28 29.43 35.53

2 8.72 14.91 11.77 14.21

2 5.58 9.54 7.53 9.10

2 5.58 9.54 7.53 9.10

2 3.57 6.11 4.82 5.82

4 2.09 3.57 2.82 3.41

4 1.34 2.29 1.81 2.18

3

0.77 1.32 1.04 1.26

3

4

0.41 0.70 0.55 0.67

4

8 0.33 0.56 0.45 0.54

10

0.15 0.26 0.20 0.25

5

5

0.13 0.22 0.18 0.21

10

Filter Factor (F)

1 inch (25) 2 inch (51)

9

Discharge Configurations

The side discharge option helps to reduce system
effect. It will increase performance and reduce
installation labor. The most notable is reducing system
effects. Note: The figure 1 example shows the air
being discharged into the corner. It will take several
duct lengths before the airflow becomes laminar or
smooth again after making the turn.
In figure 2, the fan is placed in the corner using a side
discharge. In this configuration the air flow pattern at
discharge is smooth and supports a more predictable
system. Remember the duct length on the discharge
side, should be approximately two to three wheel
diameters to achieve catalog performance.

Left Discharge

Discharge Configuration

Fan performance will change with different discharge
positions. Catalog data is based on an inline
discharge. Right side discharge will give you 108%
of cataloged performance and left side will give you
109% of cataloged performance. Use figure 3 to
locate the orientation to fit your application. Figures 4
and 5 on page 11 illustrate the proper side discharge
definitions. Refer to Greenheck’s CAPS (Computer
Aided Product Selection) program or consult factory
for performance modifications.

Left, Right & Inline Discharge

Fan

Fan

Figure 1

Figure 2

Right Discharge

Figure 3

Left & Right Discharge

10

Side Discharge

SQ Side Discharge BSQ Side Discharge

Left Side
Discharge

Access Door

Inline
Discharge

Left Side
Discharge

Access Door

Inline
Discharge

Figure 4

Inlet

SQ Side Discharge Duct Openings

Unit Size Width Height

60-75 9

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)

All dimensions in inches (millimeters).

Height

Width

7

⁄8 (251) 87⁄8 (225)

Right Side
Discharge

Figure 5

Inlet

All dimensions in inches (millimeters).

Height

Width

BSQ Side Discharge Duct Openings

Unit Size Width Height

70-80-90 11

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)

7

⁄8 (302) 117⁄8 (302)

Right Side
Discharge

11

Horizontal and Vertical
Mounting Options

All SQ and BSQ fan models can be mounted
horizontally, vertically or at an angle. For ease of
installation, knockouts are provided at each location
where mounting brackets are shown in figures 6, 7
and 8. Optional brackets are universally adjustable
to mount in any of these locations.

NOTE: Hanging

A

rails by others

E

A

G

B

F

G

B

A

B

A

F

E

B

Figure 6

Horizontal Hanging or Base Mount

With either a hanging or base mount the
motor may be located on either side. The
base mount allows top access panels only.

C

A

E

A

A

A

C

C

C

C

A

A

E

F

F

F

F

C

C

C

A

A

E

E

Figure 7

Horizontal Hanging or Base Mount

With a hanging mount, the motor may be located
on either top or bottom. The base mount allows
top motor location only. Both options provide access
panels on two sides.

D

NOTE: Hanging

B

rails by others

G

D

G

B

Figure 8

Vertical Hanging or Base Mount

Mounting brackets are turned

90 degrees for vertical mounting.

Access panels are located on the

two sides adjacent to the motor.

Model A B C D E F G
SQ 60-75 10
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)
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).

5

⁄8 (270) 17 (432) 153⁄4 (400) 87⁄8 (225) 193⁄4 (502) 7 (178)

B

D

B

D

Hanging
rails not

included.

Supplied by

others.

Hanging
rails not

included.

Supplied by

others.

12

Base Mount or Hanging Isolators

5

⁄8 inch (16 mm)

nominal

J

Standing Neoprene Isolator

Complete isolation kits are available
with either neoprene or spring
isolators and are sized to match
the weight of the specified fan
size. The base isolator support
brackets are designed to permit

H

L

mounting of the fan with the
motor located on top or either
side. The hanging isolator support
brackets are designed to permit
mounting of the fan with the motor
located on top, bottom or side.

J

Standing Spring Isolator

H

I

Hanging Neoprene Isolator

H

Note: Hanging rods to be supplied
by others.

Model H I J K L
SQ 60-75
SQ 80-95
BSQ 70-90
SQ-BSQ 100
SQ-BSQ 120
SQ-BSQ 130
SQ-BSQ 140
SQ-BSQ 160
BSQ 180
BSQ 200
BSQ 240
BSQ 300
BSQ 360
BSQ 420

All dimensions in inches (millimeters).

1

(35)

1

(35)

3

3

⁄8

51⁄2

(140)2 (51)

⁄8

51⁄2

(140)2 (51)

63⁄4

(171)

63⁄4

(171)

25⁄16

(59)

25⁄8

(67)

J

Hanging Spring Isolator

K

H

J

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Typical Installation

Models SQ and BSQ ducted inline fans are designed
for the exhaust, supply or recirculation of air in a
building. Typical installation requires ductwork on the
inlet and outlet side of the fan. A minimum of three
duct diameters is required on the inlet and outlet of the
fan to minimize system effect losses. See the diagram
below for a typical installation.

Installations can include flexible duct connections (by
others) on either the inlet or outlet side of the fan or

both. The motor is rigidly mounted and can be oriented
in any direction (top, bottom, side).

The model BSQ ducted inline fan must be installed
with the motor accessible for maintenance and
inspection.

External isolators are recommended, hanging (shown
below) or base mounted.

Installation must meet all local governing codes
and the NEC.

Flexible duct (by others)

3 Wheel

Diameters

3 Wheel

Diameters

Model Number Code

The model number system is designed to completely identify the fan. The correct code letters must be 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.

BSQ - 120 HP - VG/75/A

®

MODEL CONFIGURATION
BSQ - Belt Drive Inline Exhaust
SQ - Direct Drive Inline Exhaust

FAN SIZE
60 through 420

PRESSURE LEVEL (Belt Drive Only)
HP - High Pressure Wheel

VG = Vari-Green

(Direct Drive only)

MOTOR HP (Belt Drive only)

6 = 1/6 7 = 3/4 30 = 3
4 = 1/4 10 = 1 50 = 5
3 = 1/3 15 = 11⁄2 75 = 71⁄2
5 = 1/2 20 = 2 100 = 10

MOTOR RPM (Direct Drive only)

A = 1725 D = 1550
B = 1140 E = 1050
C = 860 G = 1300

International

(See CAPS for performance)

K = 950 RPM J = 1475 RPM

14

SQ 60-65 - Direct Drive

1

(25)

87⁄8

(225)

12

(305)

12

(305)

Damper size = 9 x 9 (229 x 229)
Unit weight** = 26 (12)
Housing thickness = 18 ga
Outlet velocity = 1.828 x cfm

Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
**Weight shown is largest cataloged Open Drip Proof motor.

13

(330)

130

120

110

100

90

80

70

60

50

Static Pressure (Pa)

40

30

20

10

0

0.55

0.50

0.45

0.40

0.35

0.30

0.25

0.20

0.15

Static Pressure (in. wg)

0.10

0.05

0.00

E

V
R

U

065-VG

C

M

060-VG

E

T

S

Y

S

S

I

H

T

F

O

T

F

E

L

E

H

T

O

T

T

C

E

L

E

S

T

O

N

O

D

0 50 100 150 200 250 300

0 50 100 150 200 250 300 350 400 450 500

065-D

060-D

065-G

060-G

065-E

060-E

Volume (cfm)

Volume (m

3

/hr)

RPM (Direct)
RPM (Vari Green)

Density 0.075 lb/ft

Density 1.2 kg/m

3

3

Motor HP

Direct 0.000 0.050 0.100 0.125 0.150 0.200 0.250 0.300 0.350 0.375

Fan RPM

CFM / Static Pressure in Inches wg

60

CFM 126 102 79 63 42

VG-1/6

E-1/140 1050

BHP 0.01 0.01 0.01 0.01 0.01

Sones 1.7 1.7 1.7 1.7 1.8

CFM 156 136 118 110 99 73 37

G-1/80 1300

BHP 0.01 0.01 0.01 0.01 0.01 0.01 0.01

Sones 2.9 2.7 2.7 2.6 2.6 2.5 2.5

CFM 186 168 153 146 138 123 105 78 48 32

D-1/40 1550

BHP 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02

Sones 4.3 4.1 3.9 3.9 3.9 3.9 4.0 4.0 4.1 4.1

CFM 207 191 177 170 163 150 136 120 98 85

1725

BHP 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03

Sones 5.4 5.2 5.1 5.0 5.0 5.1 5.1 5.3 5.5 5.6

65

CFM 154 129 98 79 57

VG-1/6

E-1/100 1050

BHP 0.01 0.01 0.01 0.01 0.01

Sones 2.2 2.1 2.0 2.0 1.9

CFM 191 172 150 137 123 92 52

G-1/50 1300

BHP 0.01 0.01 0.02 0.02 0.02 0.02 0.02

Sones 3.2 3.1 3.0 2.9 2.9 2.9 2.8

CFM 228 213 194 185 175 153 129 101 66 46

D-1/30

1550

BHP 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.02

Sones 4.9 4.8 4.5 4.4 4.3 4.1 4.0 3.9 3.7 3.6

CFM 254 242 224 216 207 190 170 148 124 111

1725

BHP 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.04 0.04

Sones 6.4 6.1 5.8 5.7 5.5 5.3 5.2 5.0 4.8 4.7

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 International Standard 301. Values shown are

for installation type B: free inlet hemispherical sone levels.

15