Specification Sheet

432
MODEL CM
BELT DRIVEN UTILITY VENT SET
STANDARD CONSTRUCTION FEATURES
Inlet/L-Flange (Standard): This standard feature allows for easy duct attachment. The inlet collar allows the fan to be removed
with minimal disconnecting of the duct work.
Weather cover (Standard): Sheet metal ventilated enclosure for the motor, shaft, belts and drives for safety and weather
protection.
Access door (Standard): This standard feature is a bolted access door that allows inspection or cleaning of the wheel compartment.
Threaded Drain Fitting (Standard): This standard feature is a 3/4” I.P.S. coupling positioned at the lowest point in fan housing to
drain moisture from the bottom of the fan housing.
Integral Mounting Flanges (Standard): Integral anges for easy roof mounting of all units.
cULus705 (Standard on CM Units): For electrical reliability. Includes standard construction features listed above and cULus705
label. Clockwise or counter clockwise top horizontal (CW-TH or CCW-TH) discharge conguration are standard but other positions
are available (must specify discharge orientation on order).
cULus762 (Standard on CM-RHUL units): For use in grease laden air or temperatures up to 400 degrees F. Ships with standard
construction features listed above and cULus762 label. Clockwise or counter clockwise upblast (CW-UB or CCW-UB) discharge
conguration are standard but top angular up (CW-TAU and CCW-TAU) positions are also available (must specify discharge
orientation on order).
cULus793 (Standard on CM-HT units): Listed for emergency heat and smoke removal. Designed and UL Listed to withstand
inlet temperatures of 500°F for 4 hours and 1000°F for 45 minutes. With this option the fan ships with standard construction
features listed above, heat slinger, and cULus793 label. Clockwise or counter clockwise upblast (CW-UB or CCW-UB) discharge
conguration are standard but other positions are also available (must specify discharge orientation on order).
ACCESSORIES/OPTIONS
Inlet/outlet Guard (Option): Heavy-gauge wire protects people and the fan entrance from unwanted debris in nonducted
installations. Outlet Guard comes with outlet ange. (Not for UL762 use).
Outlet Flange (Option): Required on the discharge for mounting of either the optional damper or the optional outlet screen.
U-ange inlet (Option): Available for easy connection to anged ductwork.
Discharge damper (Option): Heavy-duty interconnecting blade design opens by velocity. It helps prevent the entry of unwanted
objects. Outlet Flange is required (included with damper). Maximum temperature is 200 degrees F and maximum face velocity is
3500 FPM. (Not for UL762 use). Damper cannot be used with TAD, DB, & BAD positions.
RIS Vibration Pads (Option): Set of RIS (rubber in shear) or spring type isolators help reduce vibration, improve motion restraint,
help provide proper leveling, reduce torque forces, and provide improved stability in the fan installation.
Spring Vibration Pads (Option): Set of spring pads, ship loose for eld mounting.
Grease trough (Option): Allows grease to collect in an easy to service container keeping roof area clean. Design allows for water
and grease separation.
Shaft seal (Option): Nonasbestos brous material is sandwiched between the fan housing and cover plate. It helps reduce heat
and the transfer of air from the wheel compartment. Seal does not make the fan air or gas tight.
Disconnect (Option): Available in either open or rain tight enclosure and matches the motor electrical characteristics. Allows for
fan electrical cut off for servicing or inspection safety. (Ships loose).
Heat Slinger (Option): An aluminum cooling disc mounted on the fan shaft between the inboard bearing and the fan housing.
The disc dissipates heat conducted along the fan shaft, and it also promotes circulation in the motor compartment. The additional
circulation in the motor compartment extends motor life, because it allows the motor to operate at lower temperatures. Heat Slinger
comes standard when ordering cULus793 listing.
AMCA-C Assembly Kit (option): Inlet constructed of nonferrous material (aluminum). A nonferrous (aluminum) rub ring surrounds
the fan shaft where it passes through the fan housing.