Acme Engineering FN14D4 User Manual

CONSTRUCTION FEATURES

Models FN and FQ direct drive propeller fans are offered for commercial and industrial applications having
low noise and high pressure requirements.

FQ FANS

These fans are designed to operate more quietly than
conventional propeller fans and are recommended for
ventilating applications desiring less fan noise. FQ fans are
available in 10 sizes, 9" through 36" with a maximum capacity
of 17,800 CFM.

Fan panels are constructed of steel and range from 18 to 16
gauge.

Aluminum blade thickness is from .050 to .125.

ADVANCED PROPELLER DESIGN

These propellers feature an advanced teardrop shape blade
designed for exceptionally low noise level performance.

Aluminum blades are fastened to a formed steel hub with
heavy duty oversize rivets. Propeller is precision balanced for
smooth operation.

FN FANS

FN fans are designed to operate up to 1" static pressure with
capacities to 22,400 CFM. Available in 9 sizes, 14" through
48”, these heavy duty fans are designed for industrial type
applications where extra strength and durability are desired.

Fan panels are constructed of steel and range from 18 to 14
gauge.

Aluminum blade thickness is from .080” to .125”.

The swept-back teardrop blade shape with its aerodynamic
leading edge propels the air through the streamlined orifice
with a minimum of air turbulence.

FQ not available with steel propeller.

HIGH PRESSURE PROPELLERS

For increased pressure requirements, FN propellers,
depending on size and horsepower, have four or six tapered
circular-arc airfoil blades. Standard construction is all welded
heavy duty aluminum that is precision balanced.
Non-overloading design prevents motor overload when
operated within cataloged static pressure ranges. Optional
steel prop is available for all FN fans, except size 48".

LICENSED RATINGS FOR SOUND AND AIR

Acme Engineering & Manufacturing Corp. certifies that the FQ and FN Propeller Fans shown herein are licensed to bear the
AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and
AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

The sound ratings shown are loudness values in fan sones at 5 feet in a hemispherical free field calculated per AMCA Standard

301. Values shown are for installation Type A: Free Inlet fan sone levels.

Most Acme FQ and FN fans are listed by the Canadian Standards Association Testing Laboratory as approved.

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CONSTRUCTION FEATURES

FAN PANEL - Construction of heavy

gauge steel. Wide flange on all four
sides provides extra strength and rigidity
to reduce the possibility of vibration and
for a more secure installation. Standard
finish is acrylic epoxy.

FQ09 AND 10

FQ12 THRU 18

EXHAUST MODELS FQ09 and 10

utilize the rugged motor side wire guard
as the motor support means thereby
making this guard standard equipment.
Front (propeller side) guard is optional.

FQ09 and FQ10 are not available in
reverse flow (supply).

STREAMLINED ORIFICE - Die formed

for uniformity, the deep streamlined
orifice provides for high efficiency airflow
throughout the propeller.

FN14 THRU 18

FQ21 THRU 36

EXHAUST MODELS FQ12 to 36 have
the motor mounted on an all welded
steel plate and formed pipe frame
assembly for extra strength and rigidity.
Front and back guards are optional on
these sizes. FQ1210 and FQ129 are

not available in reverse flow (supply).

EASY TO INSTALL - Prepunched holes

in flange saves on installation time and
cost.

MOUNT IN ANY POSITION - All motors
are equipped with all-angle thrust ball
bearings.

FN21 THRU 48

EXHAUST MODELS FN14 to 48 have
the motor mounted on an all welded
steel plate and formed pipe frame
assembly for extra strength and rigidity.
Front and back guards are optional on
all sizes.

Supply fans are available in all models
except FQ09, 10, 1210 and 129. The
airflow capacity is the same as for
exhaust type fans as shown on page 4.

REVERSE FLOW (SUPPLY) FANS

Only circular basket type guards are
available with these fans.

When supply type fans are used with
motorized wall dampers, it is
recommended to use WAGC and

RESERVE MOTOR POWER - Fans are

designed with conservative motor
loadings and efficient motor cooling to
obtain longer motor life under
continuous duty operation.

All motors are totally enclosed type with
lubricated sealed ball bearings. All
single phase motors have automatic
resetting thermal overloads for low
voltage protection.

Models FQ09, 10, 1210 & 129 use two
speed tapped winding, single phase,
shaded pole type ball bearing motors
only.

WAGCH center pivot dampers. A
time delay is recommended in the fan
motor’s starter control circuit to
allow the damper to fully open before
the fan is activated.

All other models have split phase,
capacitor start, capacitor run, or
permanent split capacitor single phase
motors. Some are available in two
speed types.

Explosion resistant and three phase
single speed motors are also available
for some models. Consult your Acme
Representative for more details plus
availability of motors.

Single phase motors are resilient
mounted in circular neoprene vibration
isolators integral with the motor base.

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