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Model CW/CWB • Centrifugal Sidewall 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 457691
Models CW/CWB
Centrifugal Sidewall Exhaust Fans
Model CW
Direct Drive
Model CW is a direct drive
centrifugal sidewall exhaust fan.
These fans are specically designed
for wall mounted application.
Performance capabilities range up to
6,400 cfm (10,874 m
3
/hr) and up to
3 in. wg (747 Pa) of static pressure.
The maximum continuous operating
temperature for fan sizes 098-200 is 400°F (204°C)
and for fan sizes 060-095 is 160°F (71°C). CW fans
are available in fourteen sizes with nominal wheel
diameter ranging from 9 to 20 inches (229 mm to
508 mm) (060 - 200 unit sizes). Each fan shall bear
a permanently afxed manufacturer’s engraved
metal nameplate containing the model number and
individual serial number.
Model CWB
Belt Drive
Model CWB is a belt drive centrifugal
sidewall exhaust fan. These fans are
specically designed for wall mounted
application. Performance capabilities
range up to 12,500 cfm (21,200 m
3
/hr)
and up to 2.75 in. wg (685 Pa) of static
pressure. The maximum continuous
operating temperature is 400°F (204.4°C).
CWB fans are available in nineteen sizes with nominal
wheel diameter ranging from 9 to 30 inches (229 to
762 mm) (098 - 300 unit sizes). Each fan shall bear
a permanently afxed manufacturer’s engraved
metal nameplate containing the model number and
individual serial number.
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 high winds or seismic
activity are 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.
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