Product Overview

2
Fantech FSD Series
FSD SERIES
SQUARE INLINE MIXED FLOW DUCT FANS
Features
• 100% Speed Controllable
• Air Flows up to 6993 cfm
•
18" - 26" square duct dimensions
• External rotor motor, class F insulation.
Sufficient service factor provided to ensure long
a
nd maintenance free operation over maximum
load conditions.
• Automatic Reset Thermal Overload Protection
•
Self-lubricating/sealed for life precision ball bearings
• Capable of operation in air streams temperatures
up to 140°F
• Galvanized steel housing
• Terminal box with prewired electrical strip
• Mixed Flow Impeller
•
Three Year Warranty
Fan housings are constructed of rigid structural members and
formed galvanized steel panels. An internal liner is provided on
each side of the housing to suppress casing radiated noise. Inlet
and outlet discharge "ductmate" type connection collars are pro-
vided for easy connection to flexible or rigid duct sections. The
square design provides a larger discharge area than tubular cen-
trifugal or vane axial fans, so outlet velocities are reduced for qui-
eter operation.
Fan impellers are a mixed flow type, incorporating a higher flow char-
acteristic associated with axial fans as well as higher pressure, non-
overloading characteristics of backward curved wheels. The FSD18
impeller is a high density polyamide r
esin and the FSD20 - 26 ar
e
aluminum. Inlet cones are carefully matched to the venturi for max-
imum efficiency. Each motorized impeller assembly is statically and
dynamically balanced for smooth, vibration free operation.
All of the FSD Series fans use 100% speed controllable direct
drive motorized impeller assemblies with sealed, self lubricating
bearings. Because of these unique featur
es, the time and costs
associated with initial system balancing and constant maintenance
schedules ar
e virtually eliminated. Fans are supplied with a facto-
r
y installed pr
ewired electrical terminal strip for ease of electrical
connection. Three phase units are typically supplied prewired for
460 volts but may be supplied as 208-230 when specified or ar
e
easily r
ewir
ed in the field.
All FSD Series fans ar
e UL and cUL listed for electrical safety and
AMCA Certified for sound and air performance.
Construction Specifications
Description
A mixed flow centrifugal type exhaust/supply fan for moderate size
ventilation applications specifically designed to bridge the transition
from centrifugal to axial. FSD Series fans offer substantially quieter
performance and are easier to install than axial arrangements. Fans
can be mounted at any angle at any point along the duct work and
straight-through air flow design allows easy installation. Fan motors
are capable of operating in air stream temperatures up to 140˚F.
Motor bearings are a permanently sealed, self lubricating ball type.
All FSD Series fans are backed by Fantech's Three Year Warranty.
All FSD Series fans ar
e power
ed by an external rotor motorized
impeller. This design provides excellent heat dissipation even at low
rpm. All of the FSD Series fans ar
e 100% speed contr
ollable
through voltage or frequency reduction allowing for precision bal-
ancing of systems. FSD Models 18 - 22 can be supplied with
115/1/60 or 208-230/1/60 motors. FSD22 can also be supplied
with a 230-460/3/60 motor. Model FSD26 is supplied with a 230-
460/3/60 motor
.