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Model SQ/BSQ • Centrifugal Inline Exhaust Fans
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting
to assemble, install, operate or maintain the product described. Protect yourself and others by
observing all safety information. Failure to comply with instructions could result in personal injury
and/or property damage!
®
PN 472058
Models SQ and BSQ
Centrifugal Inline Fans
DANGER
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in re, shock or serious injury.
CAUTION
When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
CAUTION
Precaution should be taken in explosive
atmospheres.
General Safety Information
Only qualied personnel should install this fan.
Personnel should have a clear understanding of
these instructions and should be aware of general
safety precautions. Improper installation can result
in electric shock, possible injury due to coming in
contact with moving parts, as well as other potential
hazards. Other considerations may be required if
seismic activity is present. If more information is
needed, contact a licensed professional engineer
before moving forward.
1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC) and the
National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code
(CEC) in Canada.
2. The rotation of the wheel is critical. It must be
free to rotate without striking or rubbing any
stationary objects.
3. Motor must be securely and adequately
grounded.
4. Do not spin fan wheel faster than max cataloged
fan RPM. Adjustments to fan speed signicantly
effects motor load. If the fan RPM is changed, the
motor current should be checked to make sure it
is not exceeding the motor nameplate amps.
5. Do not allow the power cable to kink or come
in contact with oil, grease, hot surfaces or
chemicals. Replace cord immediately if damaged.
6. Verify that the power source is compatible with
the equipment.
7. Never open access doors to a duct while the fan
is running.
Model SQ
Direct Drive
Model SQ is a direct drive
centrifugal inline exhaust
fan. These fans are
specically designed for inline
applications. Performance
capabilities range up to 5,000
cfm (8,500 m
3
/hr) and up to
2.0 in. wg (498 Pa) of static
pressure. SQ fans are available
in thirteen sizes with nominal wheel diameter ranging
from 6 to 16 inches (152 to 406 mm) (060 - 160 unit
sizes). Each fan shall bear a permanently afxed
manufacture’s engraved metal nameplate containing
the model number and individual serial number.
Model BSQ
Belt Drive
Model BSQ is a belt drive
centrifugal inline exhaust fan.
These fans are specically
designed for inline applications.
Performance capabilities range
up to 27,200 cfm (46,200 m
3
/hr)
and up to 4.0 in. wg (996 Pa) of
static pressure. BSQ fans are
available in fourteen sizes with
nominal wheel diameter ranging from 7 to 42 inches
(178 to 1067 mm) (070 - 420 unit sizes). Each fan shall
bear a permanently afxed manufacture’s engraved
metal nameplate containing the model number and
individual serial number.