Product Overview

3
Fantech FSD Series
Mounting
All FSD Series fans can be mounted either horizontally or
vertically. Any side of the fan can be adapted to match
particular installation requirements. Fan mounting options include
suspending the unit with neoprene or spring hanging isolators or
horizontal surface mounting the unit with neoprene or spring base
isolators. The fans may also be secured to a vertical surface using
angle brackets and vibration isolators.
Speed Controllability
Due to the excellent heat dissipating characteristic of the external
rotor motor, all FSD Series fans are 100% speed controllable
through a reduction in the voltage or frequency. Speed Control per-
formance regulation also eliminates the need for correct belt align-
ment and tension as well as ongoing maintenance associated with
belt drive systems. Fantech offers a variety of fan motor speed
control options including solid state variable voltage controls, step
transformers, solid state proportional output controls, and solid
state propotional - integral "logical" control systems, in both single
and three phase. Most speed controls may also be used as sec-
ondary steps for multiple speed systems. By using a contactor, fan
speed can be manually or automatically switched from high to low
and back again.
System Balancing
System balancing is achieved by measuring the system flow or
pressure and adjusting the fan performance by “dialing-in” or set-
ting the fan speed with a variable voltage control. (See options
available in paragraph above.) This control flexibility allows the sys-
tem to be adjusted to exacting specifications.
Typical Specifications for
Model FSD Inline Duct Fans
Supply, exhaust or return air inline fans shall be of the mixed
flow, direct driven type.
Construction
Fan housing shall be constructed of heavy gauge galvanized
sheet metal. Fan housing shall be lined with vibration damp-
ening/sound attenuating padding for noise suppression. Fan
shall be supplied with externally mounted electrical terminal
box with pre-wired terminal strip connections.
Motorized impeller shall be a totally enclosed external rotor
type, Class F insulation. Single phase motors shall be per-
manent split capacitor type. Three phase motors shall be dual
wound for 208/230V or 440/460V. All motors shall be a per-
manently sealed self lubricating ball bearing type. Motors shall
be equipped with automatic reset thermal overload protec-
tion. Motors shall be acceptable for continuous duty. Sufficient
ser
vice factor shall be provided to ensure long maintenance
free operation over maximum load conditions.
Fan wheel shall be of the mixed flow centrifugal type with a
well designed inlet venturi for maximum performance.
Motorized impeller shall be both statically and dynamically bal-
anced as one integral unit to provide for vibration free per-
formance. Impellers for models FSD 18 through FSD 22 shall
be molded of high impact polypropylene. Impeller for model
FSD 20 shall be constructed of aluminum.
Performance
Fan airflow and sound performance shall be based on tests con-
ducted in accordance with AMCA Standards 210 and 301 and
shall be licensed to bear the AMCA Certified Ratings label.
Code Approval
Fan shall be tested and approved by UL (or equal) for safety.
FSD Series shall be manufactured under the authority of
Fantech, Inc., Sarasota, FL.
Fantech, Inc. and Fantech
Limited cer
tifies that the
FSD Series shown herein is
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 r
equir
ements of
the AMCA Certified
Ratings Program.
Performance Data
Air Performance Data
FSD air per
for
mance data has been presented at five voltages rep-
resenting a percentage of full line voltage. Additional performance
can be interpolated between the char
ted test points and achieved
using a variable voltage control. For additional assistance deter-
mining fan operation at intermediate voltages/rpm, please contact
Fantech’
s engineering depar
tment.
Sound Data
Sound data is presented in eight full octave bands as fan inlet
sound power - L
wi
, dB; total fan inlet sound power L
wi
, dB(A); and in
fan inlet sone levels.