Greenheck Fan Centrifugal Utility Fans SFB - Manual (Page 9)

9
Mounting Options
Rubber Mounts -
Type 2, ¼-inch and
½-inch Deflection
Neoprene mountings
consist of a steel top plate
and base plate completely
embedded in colored (oil-
resistant) neoprene for easy
identification of capacity. Neoprene mountings are
furnished with a tapped hole in the center. This
enables the equipment to be bolted securely to
the rubber mount.
Housed Spring Mounts
Type 4B, 1-inch Deflection
Housed spring isolators
consist of steel springs
assembled into a telescoping
housing with a top-mounted
adjusting bolt and an
acoustical non-skid base.
Housed spring isolators
include resilient inserts to prevent metal-to-metal
contact and provide snubbing for side loads. Springs
provide an additional 50% overload capacity and are
color coded to indicate load capacity.
Free-Standing Open
Spring Mounts -
Type 3, 1-inch Deflection
Free-standing spring isolators
are unhoused laterally stable
steel springs. They provide a
minimum horizontal stiffness
of 0.8 times the rated vertical
stiffness and provide an additional 50% overload
capacity. These isolators are equipped with a
top-mounted adjusting bolt and an acoustical
non-skid base. Springs are color coded to indicate
load capacity.
Restrained Spring
Mounts -
Type 4A, 1-inch Deflection
Restrained spring isolators
consist of laterally stable,
free-standing springs
assembled into a steel
housing. These assemblies
are designed for vertical and horizontal motion
restraint. Restrained spring isolators can be used
for blocking during equipment installation and are
provided with leveling bolts. Springs provide 50%
overload capacity and are color coded or identified to
indicate load capacity. Restrained spring mounts are
recommended for equipment subject to wind loading
or large torquing forces.
Equipment Supports
Models GESS and GESR equipment
supports are available for roof
mounting of utility fans up to size 36.
Equipment supports are available in
a number of lengths, widths, heights,
and can also be built for a pitched roof.
Vibration Isolators
Base-mounted neoprene or spring isolators are available to lessen mechanical vibration and assure quiet
operation. Free-standing, restrained and housed spring isolators are also available. Isolators are sized to
match the weight of each fan.
Mounting Rails
with Isolators
Isolation mounting
rails are available with
either rubber mount,
free-standing open
or restrained spring
isolators. The isolators
are mounted between
aluminum rails that
run the length of the
fan base. Isolation rails provide easy
installation on isolated systems,
and are ideal for
applications where
there is a large overhung load.
Mounting rails are available for fans up
to size 36.
Direct Mount - Type A
No base required. Isolators
are attached directly to
equipment. Direct isolation
can be used if equipment
is unitary and rigid without
the use of additional
support. If there is
any doubt whether or
not equipment can be
supported directly on isolators,
use rails, bases or consult the factory.