Greenheck USGF Installation Manual
®
PN 462077
Ultimate Steel Grease Fan
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
Model USGF
Ultimate Steel Grease Fan
Model USGF is a belt drive upblast centrifugal
exhaust fan. These fans are specifically designed
for high grease applications. Fans are Miami‑Dade
approved for high‑velocity hurricane zones, NOA#
07‑0503.07. Performance capabilities range up
to 6,800 cfm (11,500 m3/hr) and up to 3.25 in. wg
(810 Pa) of static pressure. The maximum continuous
operating temperature is 400°F (204.4°C). Model USGF
is available in nine sizes, 140‑200HP with nominal
wheel diameter ranging from 14 to 20 inches (356 to
508 mm). Each fan shall bear a permanently affixed
manufacturer’s engraved metal nameplate containing
the model number and individual serial number.
General Safety Information
Only qualified personnel should install this fan. Personnel
should have a clear understanding of these instructions
and should be aware of general safety precautions.
Improper installation can result in electric shock, possible
injury due to coming in contact with moving parts, as well
as other potential hazards. Other considerations may
be required if high winds or seismic activity are present.
If more information is needed, contact a licensed
professional engineer before moving forward.
DANGER
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
CAUTION
When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
CAUTION
Precaution should be taken in explosive
atmospheres.
1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC) and the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electric Code.
2. The rotation of the wheel is critical. It must be free
to rotate without striking or rubbing any stationary
objects.
3. Motor must be securely and adequately grounded.
4. Do not spin fan wheel faster than max cataloged fan
RPM. Adjustments to fan speed significantly effects
motor load. If the fan RPM is changed, the motor
current should be checked to make sure it is not
exceeding the motor nameplate amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces, or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with the
equipment.
7. Never open access doors to a duct while the fan is
running.
Model USGF Ultimate Steel Grease Fan
1
®
Receiving
(4) Drive Frame
Lifting Points
(2) Bearing Plate
Lifting Points
Hook With
Safety Latch
(Supplied by others)
Screw
Screw
Upon receiving the product check to make sure all items
are accounted for by referencing the bill of lading to
ensure all items were received. Inspect each crate for
shipping damage before accepting delivery. Notify the
carrier if any damage is noticed. The carrier will make
notification on the delivery receipt acknowledging any
damage to the product. All damage should be noted on
all the copies of the bill of lading which is countersigned
by the delivering carrier. A Carrier Inspection Report
should be filled out by the carrier upon arrival and
reported to the Traffic Department. If damaged upon
arrival, file a claim with carrier. Any physical damage
to the unit after acceptance is not the responsibility of
Greenheck Fan Corporation.
Unpacking
Verify that all required parts and the correct quantity
of each item have been received. If any items are
missing, report shortages to your local representative to
arrange for obtaining missing parts. Sometimes it is not
possible that all items for the unit be shipped together
due to availability of transportation and truck space.
Confirmation of shipment(s) must be limited to only items
on the bill of lading.
Handling
When lifting the unit onto the roof, use either the four
lifting points on the drive frame or the two lifting points
on the bearing plate if present, see figure 1 for lifting
points. Access to the drive frame is accomplished by
removing the screws pointed out in figure 2. The cover
can then be removed and placed on a flat surface in an
area protected from strong winds.
Figure 1
The motor amperage and voltage ratings must be
checked for compatibility to supply voltage prior to final
electrical connection. Wiring must conform to local and
national codes. Consult local code authorities for specific
requirements.
CAUTION
Do not lift by the fan hood. Avoid lifting fans in a
way that will bend or distort fan parts. Never pass
slings or timbers through the venturi of fan. Fans
with special coatings or paints must be protected in
handling to prevent damage.
Storage
Fans are protected against damage during shipment. If
the unit cannot be installed and operated immediately,
precautions need to be taken to prevent deterioration of
the unit during storage. The user assumes responsibility
of the fan and accessories while in storage. The
manufacturer will not be responsible for damage during
storage. These suggestions are provided solely as a
convenience to the user.
Indoor
The ideal environment for the storage of fans and
accessories is indoors, above grade, in a low humidity
atmosphere which is sealed to prevent the entry of
blowing dust, rain or snow. Temperatures should be
evenly maintained between 30° to 110°F (-1° to 43°C)
(wide temperature swings may cause condensation
and “sweating” of metal parts). All accessories must be
stored indoors in a clean, dry atmosphere.
Remove any accumulations of dirt, water, ice, or snow
and wipe dry before moving to indoor storage. Allow cold
parts to reach room temperature to avoid “sweating” of
metal parts. To dry parts and packages use a portable
electric heater to get rid of any moisture buildup. Leave
coverings loose to permit air circulation and to allow for
periodic inspection.
The unit should be stored at least 3½ inches (89 mm)
off the floor on wooden blocks covered with moisture
proof paper or polyethylene sheathing. Aisles between
parts and along all walls should be provided to permit air
circulation and space for inspection.
Figure 2
When the USGF unit is on the roof, move fan to
desired location using lifting points and fasten securely
according to mounting details shown in figure 9 on
page 5. Shims may be necessary depending upon
roofing material thickness.
Model USGF Ultimate Steel Grease Fan
2
Outdoor
Fans designed for outdoor applications may be stored
outdoors if absolutely necessary. Roads or aisles for
portable cranes and hauling equipment are needed.
The fan should be placed on a level surface to prevent
water from leaking into the fan. The fan should be
elevated on an adequate number of wooden blocks so
that it is above water and snow levels and has enough
blocking to prevent it from settling into soft ground.
Locate parts far enough apart to permit air circulation,
sunlight and space for periodic inspection. To minimize
water accumulation, place all fan parts on blocking
supports so that rain water will run off.
Do not cover parts with plastic film or tarps as these
cause condensation of moisture from the air passing
through heating and cooling cycles.
®
MOTOR
L1
115/208-230/60/1
208-230/460/60/3
MOTOR
J-BOX
J-BOX
SUPPLY VOLTAGE
SUPPLY VOLTAGE
L2
L1
L2
L3
Fan wheels should be blocked to prevent spinning
caused by strong winds.
Inspection and Maintenance During
Storage
While in storage, inspect fans once per month. Keep a
record of inspection and maintenance performed.
If moisture or dirt accumulations are found on parts,
the source should be located and eliminated. At each
inspection, rotate the wheel by hand ten to fifteen
revolutions to distribute lubricant in motor and bearings.
If paint deterioration begins, consideration should
be given to touch‑up or repainting. Fans with special
coatings may require special techniques for touch‑up or
repair.
Machined parts coated with rust preventive should be
restored to good condition promptly if signs of rust
occur. Immediately remove the original rust preventive
coating with petroleum solvent and clean with lint‑free
cloths. Polish any remaining rust from surface with
crocus cloth or fine emery paper and oil. Do not destroy
the continuity of the surfaces. Thoroughly wipe clean
with Tectyl® 506 (Ashland Inc.) or the equivalent. For hard
to reach internal surfaces or for occasional use, consider
using Tectyl® 511M Rust Preventive, WD‑40® or the
equivalent.
WARNING
Disconnect power before installing or servicing.
WARNING
Installation, troubleshooting and parts replacement
is to be performed only by qualified personnel.
Consult and follow NFPA 96 recommendations.
NFPA 96 instructions supercede this document.
Installation
General Roof Mounting Installation
1. On the roof surface, cut an appropriate sized hole
and follow manufacturer’s instructions on curb
installation, refer to page 4. Caulk and flash the curb
to ensure a water tight seal.
2. Remove motor cover. Access to the motor
compartment is accomplished by removing the
screws as shown in figure 2. The cover can then
be removed and placed on a flat surface in an area
protected from strong winds.
3. On the drive frame use the lifting lugs to lift and
place the unit on top of roof curb. (Refer to figure 1
on page 2).
4. Secure fan to curb according to mounting details,
refer to page 5.
5. Verify power line wiring is de‑energized before
connecting fan motor to power source.
6. Connect power supply wiring to the motor as
indicated on the motor nameplate or terminal box
cover. Check the power source for compatiblity with
the requirements of your equipment.
7. Check fan wheel for free rotation and re‑center if
necessary.
8. Check all fasteners for tightness.
9. Mount and wire safety disconnect switch under
motor cover. Wire control switches at ground level,
refer to figure 3.
Typical Wiring Diagram
Figure 3
10. Replace motor cover.
11. For NFPA ‑ restaurant applications: the electrical
supply must enter the motor compartment through
the breather tube. For other non‑flammable
applications the electrical supply can be routed
throught the conduit chase between the curb cap
and the bottom of the motor compartment. Consult
local code authorities for specific requirements.
12. A drain trough is provided on all USGF fans for
single‑point drainage of water and residue. Some
means for collection of this residue must be
provided, either a container directly under the trough
or use of an adapter and pipe to carry the residue
to a remote collection point. An optional grease trap
with water separator baffles is available from your
Greenheck representative.
13. A Clean‑Out Port and hinging curb cap are also
provided on all USGF’s. They aid the cleaning
process through additional access to the wheel. The
USGF is designed for the worst cooking conditions,
such as char broilers, solid fuel cooking or oriental
cooking. Table 1 shows the suggested Exhaust
System Inspection Schedule published in NFPA 96.
Table 1: Exhaust System Inspection Schedule
Type or Volume of Cooking Frequency Check
Systems serving solid fuel cooking
operations
Systems serving high‑volume cooking
operations, such as 24 hour cooking,
char broiling, or wok cooking
Systems serving moderate‑volume cooking
operations
Systems serving low‑volume cooking
operations, such as churches, day camps,
seasonal business, or senior centers
14. Clean‑Out Port: Position
Clean‑Out Port so it is
on the side of unit when
hinged open, see figure 4.
15. Hinged Curb Cap: During
installation of the hinge curb
cap kit, it is important not to
allow the fan to go beyond
90º, see figure 5.
Figure 5
Model USGF Ultimate Steel Grease Fan
Monthly
Quarterly
Semiannually
Annually
Figure 4
3
®
Typical Installation for Concrete Deck Anchoring
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Figure 6
Typical Installation for Metal Building/Steel Deck Anchoring
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Figure 7
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Minimum Concrete
Strength of 2000 PSI
Minimum 1¾ in.
(44 mm) edge distance
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Roof Truss
Outside of Roof Curb
1 in. (25 mm) less than Fan Curb Cap
1 in. (25 mm) Insulation
Roof Opening
5 in. (127 mm) Mounting Flange
Outside Flange
Outside of Roof Curb
1 in. (25 mm) less than
Fan Curb Cap
1 in. (25 mm) Insulation
Roof Opening
Minimum 12 ga Steel
5 in. (127 mm) Mounting Flange
Outside Flange
Use 3⁄8 in. (10 mm) expansion anchor
or equal into concrete.
Fasteners one on each corner as
detailed.
Each side at center of unit. Maximum
fastener spacing of 8 in. (203 mm),
add additional fasteners to satisfy.
21⁄2 in. (64 mm)
Embedment Recommended
minimum 15⁄8 in. (41 mm)
Center fasteners on flange
Use #12-14 self-drilling screws or equal.
Fasteners one on each corner as
detailed.
Each side at center of unit. Maximum
fastener spacing of 8 in. (203 mm), add
additional fasteners to satisfy.
Corrugated Roof Deck
Center fasteners
on flange
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Figure 8
Model Size Curb Cap Size Roof Opening
USGF‑141 ‑ 160HP 26 x 26 (559 x 559) 18½ x 18½ (470 x 470) 5 35 x 35 (889 x 887)
USGF‑180 ‑ 200HP 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions shown are in inches (millimeters).
Typical Installation for Wood Deck Anchoring
Outside of Roof Curb
1 in. (25 mm) less than
Fan Curb Cap
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Wood Decking
Wood Support Member
Nominal 2 x 4, 6, 8
1 in. (25 mm) Insulation
Roof Opening
5 in. (127 mm) Mounting Flange
Outside Flange
Number of Screws
(per side)
Use #12 Wood Screws or equal into
minimum No. 1/No. 2 Southern Pine wood
support.
Fasteners one on each corner as detailed.
Each side at center of unit. Maximum
fastener spacing of 6 in. (152 mm), add
additional fasteners to satisfy.
2 in. (51 mm) Minimum Embedment
Center fasteners
on flange
Outside Flange
Model USGF Ultimate Steel Grease Fan
4
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