Twin City BCRFS Belt Driven Centrifugal Filtered Supply Fans - IM-4310 - Manual (Page 2)

2 Twin City IM-4310
Installation
Roof ventilators should always be mounted to a flat
level, solid and rigid structure. Particular caution should
be exercised when installing fans on metal buildings. Be
sure roof is capable of supporting the fan(s). Fans
mounted on roofs that are not supported correctly will
cause vibration that could cause damage or injury.
Use guy wires to help secure roof units if excessively
windy conditions prevail.
1. CAUTION! This fan contains rotating parts and
requires electrical service. Appropriate safety precau-
tions should be taken during installation, operation
and maintenance.
2. WARNING! Do not install or operate this fan in an
environment or atmosphere where combustible or
flammable materials, gasses or fumes are present
unless it was specifically designed and manufac-
tured for use in that environment. Explosion or fire
can result. Explosive, corrosive, high temperature, or
other extreme conditions may require special con-
struction, inspection and maintenance. It is neces-
sary to observe the fan manufacturer's recommen-
dations and limitations concerning the type of mate-
rial to be handled by the fan and its application to
special conditions.
3. The roof supply fan is designed to be mounted on
a curb, which should be securely installed prior to
fan installation.
BACKDRAFT DAMPER INSTALLATION (OPTIONAL ACCESSORY)
Dampers are available only with the Inlet Extension accessory. Dampers are to be positioned in the damper rails
located in the extension near the fan housing, under the Access Door. Make sure the damper blades open towards
the fan.
4. CAUTION! All electrical work must be done in
accordance with local and/ or national electrical
codes as applicable. If you are unfamiliar with meth-
ods of installing electrical wiring, secure the ser-
vices of a qualified electrician.
5. WARNING! This product must be grounded.
6. DANGER! Make sure power is turned off and locked
in the OFF position at the service entrance before
installing, wiring or servicing fan.
7. CAUTION! Before wiring the motor, check the sup-
ply voltage against the motor nameplate voltage.
High or low voltage can damage the motor and void
the motor warranty.
8. WARNING! Be sure to keep all wiring clear of rotat-
ing or moving parts.
9. WARNING! Before starting the fan, turn the wheel
to assure it rotates freely. If needed, adjust the
wheel/shaft/bearing/motor position as required to
achieve necessary clearances.
10. On belt driven units, assure belts are tensioned and
aligned properly. See Maintenance section, Page 5.
11. Check all setscrews and keys. Tighten as necessary
prior to fan start-up.
12. Anchor the fan securely to the roof curb. Anchoring
through the vertical portion of the curb cap flange
is recommended. Use a minimum of eight lag bolts
or other suitable fasteners.