FKD 12 Engineering Data

Features
• 100% Speed Controllable
• Air Flows up to 6300 cfm
• 8" - 20" circular duct connections
• External rotor motor, class F insulation.
Sufficient service factor provided to ensure long
and maintenance free operation.
• Automatic Reset Thermal Overload Protection
• Self-lubricating/sealed for life precision ball bearings
• Designed for operation in conditioned air streams
of up to 140°F
• Galvanized steel housing
• Terminal box with prewired electrical strip
• Mixed Flow impeller
• Three Year Warranty
All FKD Series fans are powered by an external rotor motorized
impeller. This design provides excellent heat dissipation even at
low rpm. All of the FKD Series fans are 100% speed controllable
through voltage reduction allowing for precision balancing of sys-
tems. FKD8XL through 18 are supplied standard with 115/1/60
motors. FKD18XL and FKD20 have a standard configuration of
230-460/3/60. For additional motor options please contact
Fantech Technical Support at 1-800-747-1762.
Description
A mixed flow centrifugal type exhaust/supply fan for moderate size
ventilation applications specifically designed to bridge the transition
from centrifugal to axial. FKD 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.
Straight-through air flow design allows easy installation. Fans can
easily be removed from duct work for service. Fan motors are capa-
ble of operating in air stream temperatures of 140°F. Motor bear-
ings are a permanently sealed, self lubricating ball type. All fans are
100% speed controllable through a decrease in the voltage by using
a solid state or transformer type control. All FKD Series fans are
backed by Fantech’s Three Year Warranty.
2 Fantech FKD Series
FKD SERIES
INLINE MIXED FLOW DUCT FANS
Construction Specifications
Fan housings are constructed of formed galvanized steel casings
and pressed inlet and outlet cones. Internal structural members
and motor mounting bracket combine to form a rigid framework
supporting the motor and impeller. Integral turning vanes for maxi-
mized air flow and pressure are included.
Fan impellers are a non-overloading mixed flow axial/ centrifugal
type. The FKD14XL through FKD18 impeller is a high density
polyamide resin. While the impellers of the FKD8XL through
FKD14, FKD18XL, & FKD20 is made of aluminum. Inlet cones are
carefully matched to the venturi for maximum efficiency. Each
motorized impeller assembly is statically and dynamically balanced
for smooth, vibration free operation.
All of the FKD Series fans are 100% speed controllable,
direct drive motorized impeller assemblies with sealed, self lubri-
cating bearings. Because of these unique features, the time and
costs associated with initial system balancing and constant main-
tenance schedules are virtually eliminated. Fans are supplied with a
factory installed prewired electrical terminal strip for ease of elec-
trical connection. Three phase units are typically supplied prewired
for 460 volts but may be supplied as 208-230 when specified or
are easily rewired in the field. An optional factory installed discon-
nect switch can be included when specified.
All FKD Series fans are UL and cUL listed for electrical safety and
AMCA Certified for sound and air performance.