Greenheck Fan Series L - Manual (Page 6)

6
Options and Accessories
BIRDSCREEN - Galvanized mesh is standard.
Optional aluminum or stainless steel rigid wire are
also available.
HOOD INSULATION - Hood insulation is dual-
density to minimize condensation, reduce thermal
transfer, and enhance sound absorption at high and
low frequencies.
LIFTING LUGS - Four heavy gauge steel brackets
are available to provide lifting points when raising
the fan to the roof.
TIE DOwN POINTS - Four heavy gauge steel
brackets are available to secure the fan in heavy
wind applications. Cables and anchors by others.
COATINGS - All Greenheck coatings and resistance
charts can be found in the performance coatings
catalog. A wide variety of coatings and colors are
available in two categories:
Decorative coatings – Sixteen standard colors
are available.
Protective coatings – Five electrostatic applied
powder coatings are available to protect against
most environments.
DAMPERS - Designed to prevent
outside air from entering back
into the building when fan is
off. Options include gravity and
motorized dampers. Damper
sizes are shown on each
performance data page.
CURB SEAL - Rubber seal between fan and curb to
ensure proper sealing when attached to a curb.
DISCONNECT SwITCHES - A wide selection
of NEMA rated switches are
available for positive electrical
shutoff and safety, including:
dust-tight, rainproof, and
corrosion-resistant. Switches
may be internally or externally
mounted.
SPEED CONTROLLERS - Available for use with
shaded pole and permanent split capacitor (PSC)
open motors on models LD and LDP fans. They
provide an economical means of system balancing
with direct drive fans.
CURB EXTENSIONS - Extensions raise the fan
discharge above the roof line and provide an
accessible mounting location for dampers. Insect
screen bases
constructed with
a removable
fine mesh are
recommended for
applications where insect
entry must be prevented. Curb
extensions are not available with LDP and LBP
severe duty construction models.
ROOF CURBS - Prefabricated roof curbs reduce
installation time and costs by ensuring compatibility
between the fan, curb, and roof opening. All curbs
are insulated with fiberglass. A
wide variety of roof curbs
are available including
flanged, pitched, and
sound-absorbing.