Document 475564
Model XRAE and XRAS
Axial Exhaust and Supply 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 these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
Pre-Starting Checks
1. Inspect for any damage that may have occurred during
General Safety Information
When Installing or Servicing the Fan
transit.
Do not depend on any switch as the sole means of
2. Shipping damage claim must be filed with carrier.
disconnecting power when installing or servicing the
3. Check all bolts, screws, setscrews, etc. for looseness that
fan. Always disconnect, lock and tag power source
before installing or servicing. Failure to disconnect
power source can result in fire, shock, or serious
may have occurred during transit. Retighten as required.
Rotate propeller by hand to be sure it turns freely.
injury. Motor will restart without warning after thermal
protector trips. Do not touch operating motor, it may be
Installation
Installation, troubleshooting and parts replacement is to
be performed only by a qualified personnel. Consult and
follow applicable building codes which will supercede this
document.
NOTE: Refer to motor nameplate for wiring procedures.
Refer to switch manufacturer for installation and wiring
procedures.
1. Cut an appropriate sized hole in the roof surface. Follow
curb manufacturer’s installation instructions. Caulk and
flash curb to ensure a watertight seal.
hot enough to cause injury.
Do not place any body parts or objects in fan, motor
openings, or drives while motor is connected to power
source.
Do not use this equipment in explosive atmospheres!
1. Read and follow all instructions and cautionary
markings. Make sure electrical power source conforms
to requirements of equipment and local codes.
2. Ventilators should be assembled, installed and serviced
by a qualified technician. Have all electrical work
performed by a qualified electrician.
2. Install optional backdraft damper. Secure damper flange
to curb damper tray with fasteners provided.
3. Follow all local electrical and safety codes in the United
States and Canada, as well as the National Electrical
Code (NEC), the Occupational Safety and Health Act
(OSHA), and the National Fire Protection Association
(NFPA) Bulletin 96 in the United States. Ground motor
in accordance with NEC Article 250 (grounding). Follow
the Canadian Electrical Code (CEC) in Canada.
3. Remove motor cover.
4. Place ventilator on curb.
5. Secure ventilator to roof curb using a minimum of eight
fasteners.
6. Check ventilator propeller for free rotation.
7. Check all fasteners for tightness.
4. Motor and fan must be securely grounded (bare metal)
to a suitable electric ground, such as a grounded water
pipe or ground wire system.
8. Mount and wire safety disconnect switch under ventilator
cover and wire motor per wiring diagram on motor.
9. Replace motor cover.
In United States, to reduce the risk of injury to persons,
OSHA complying guards are required when fan is
installed within 7 feet of floor or working level.
10. Wire control switches at ground level.
Optional Disconnect
In Canada, to reduce the risk of injury to persons, CSA
complying guards are required when fan is installed
below 2.5 meters (8.2 feet) above floor or grade level.
1. Do not kink power cable or allow it to come in contact
with sharp objects, oil, grease, hot surfaces or
chemicals. Replace damaged cords immediately.
2. Make certain that the power source conforms to the
requirements for the equipment.
0.75 in.
8 in. or 12 in.
3. Never open access door to a duct with the ventilator
running.
Wiring by Others
4. Motor must be securely and adequately grounded.
This can be accomplished by wiring with a grounded,
metal-clad race way system by using a separate
ground wire connected to the bare metal of the motor
frame or other suitable means.
Recommended Duct
1.25 in.
and Damper Size
Recommended Roof Opening
Axial Exhaust and Supply Fans
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