Greenheck USGF User manual

Centrifugal Exhaust Fans
Model USGF - Ultimate Steel Grease Fan
• Charbroilers, Solid Fuel Cooking, Oriental Cooking and High Wind Applications
February
2008

2
Ultimate Steel
Grease Exhaust Fan
Designed for severe grease applications...
When you choose a Greenheck USGF fan, you have selected a fan with the industry’s best performance and
durability for heavy grease applications (as stated in NFPA’s Chapter 11 restaurants and food service where
high amounts of grease and/or solid fuels are used). The USGF fan is specifically designed for severe grease
applications and to discharge air directly away from the mounting surface.
•Leakproof construction for the entire life of the fan utilizing a one-piece steel windband that is
continuously welded to the curb cap.
•Only spun steel fan in the industry.
•Performance up to 3.25 in. wg (810 Pa) and 6,800 cfm (11,550 m3/hr).
•Withstands the most severe cleaning conditions.
•Most advanced motor cooling of any grease fan. Capable of continuously handling 400° F airstream
temperatures.
•Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory, and all
models are licensed to bear the AMCA Sound and Air performance seals.
•UL Listed for electrical and grease applications.
•Greenheck subjects these products to extensive life testing, assuring you that the fans will provide many
years of reliable performance.
•Only kitchen exhaust fan to meet Miami-Dade Test protocols for large Missile Impact Test.
Greenheck Fan Corporation certifies that the
Model USGF fan shown herein is licensed to bear
the AMCA Seal. The ratings shown are based on
tests and procedures performed in accordance
with AMCA Publication 211 and Publication 311
and comply with the requirements of the AMCA
Certified Ratings Program. The certified ratings
for Model USGF are shown on pages 10 to 18.
Model USGF is listed for
electrical (UL/cUL 705)
File no. E40001
Model USGF is listed for
grease removal (UL/cUL
762) File no. MH11745

3
World-Class Manufacturing
Greenheck’s skilled production workers use cost-effective
machines and unique dies designed and built by our
own engineers to add innovative features and greater
strength to our centrifugal exhaust fans. Our advanced
manufacturing processes and quality control procedures
always ensure the highest product quality. And just to
be sure you get the peace-of-mind you expect when you
specify Greenheck, our assembly inspectors test run and
monitor every fan before it leaves the factory. Results
of these tests are kept in permanent records for future
reference.
Leading-Edge Technical Support
When you need extensive product and IOM (Installation
and Operating Manual) information, our products are
supported by the industry’s best product literature,
electronic media and computer aided selection
program (CAPS). You’ll also find this information on our
website at www.greenheck.com
You can always count on personal service and
expertise from our national and international
representative organization. To locate your nearest
Greenheck representative, call 715-359-6171 or visit our
website at www.greenheck.com

4
Forceful winds and wind-borne debris are the cause of most hurricane damage. Hurricane winds start
at 75 mph. At speeds of 140 mph wind can exert a 130 pound per square foot pressure or 900 pounds
of force on a fan and curb. Forceful winds are not the only problem; wind-borne debris can also cause
detrimental effects to objects and structures.
Miami-Dade County has the strictest test protocols in the country for wind-borne debris and wind
loading tests. Greenheck has gone one step further with the model USGF by third-party testing to the
Miami-Dade County Test Protocols.
These protocols were designed to protect against wind-born debris and severe wind loads.
•Structural Performance per Dade County Protocol TAS 202 (ASTM E-330).
•Large Missile Impact Testing per Dade County Protocol TAS 201.
Structural Performance Load: A static load that is 1.5 times the design load (195 pounds per square
foot pressure) is applied both positive and negative to simulate wind force loads in each direction.
Large Missile Impact Test: Is required when objects are located 30 feet or less from the ground. The
test unit is impacted three times with a piece of lumber (2 in. x 4 in. x 6 ft) weighing approximately nine
pounds and traveling at 34 mph. This simulates wind-borne debris striking the fan.
Miami-Dade County test protocols: Greenheck has gone the extra mile and worked with Miami-Dade
County to design a High Velocity Hurricane Zone standard for rooftop fans. The USGF has become the
first rooftop fan certified and approved by the Miami Dade Building Code Compliance office and Texas
Department of Insurance for use in hurricane zones. The certifications can be viewed on the Miami-Dade
County website under NOA #07-0503.06 or the Texas Department of Insurance Windstorm website.
When severe weather is a threat, don’t specify anything less than the Greenheck model USGF and the
SD curb.
Severe Weather
Applications

5
Standard
Construction Features
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4
5
6
7
9
13 14
15
16
17
18
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2
10 11
12
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2
3
4
5
6
7
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10
11
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14
15
16
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Fan Shaft - Is 1-inch minimum in diameter and is
precisely sized, ground, and polished so the first
critical speed is at least 25% over the maximum
operating speed, which results in longer fan life.
Bearings - Lubricatable cast pillow block and are
air handling quality extended life L10 > 100,000
hours (L50 average life > 500,000 hours)
True Vibration Isolation - Lowers sound levels
and reduces vibration, which increases the fans
life since true vibration has no steel to steel
contact.
Clean Out Port - Allows the outside of the wheel
to be cleaned through a four-inch diameter
removable plug in the windband.
Non-Stick Coated Steel Wheel - Heavy
weight steel wheel with a dry lubricate
coating eliminates imbalance in heavy grease
applications. The steel wheel is a backward-
inclined, non-overloading centrifugal type.
Drain Trough - All grease and water is collected
at one-point for easy disposal.
Curb Cap with Mounting Holes - Prepunched
mounting holes in the steel curb cap to ensure
correct attachment to the roof.
Hinged Curb Cap with Cables - Allows entire fan
to tilt away for access to wheel and ductwork
for inspection and cleaning. Shipped for field
assembly.
Leakproof Construction - One-piece fully welded
windband to curb cap. Assures no grease will
leak onto roof through the fan’s seams.
Drive Assembly - Dual belts, pulleys, and keys are
oversized 150% of driven horsepower. Machined
cast steel pulleys are adjustable for final system
balancing. Belts are static free and oil resistant.
Motor Cover - Is easily removed for access to the
steel motor compartment and drive assembly.
Powder Coated - Unit is constructed of a minimum
of 16 gauge galvaneal steel. Entire unit is powder
coated with a chemical resistant Permatector
finish.
Motor - Carefully matched to the fan load and is
mounted out of air stream.
Windband - Unique spun from galvaneal steel
achieves superior strength & consistent material
thickness.
Nema-3R Disconnect Switch Mounted & Wired -
Motor and switch are prewired to specified voltage.
Motor Cooling Tube - Maximum motor life is
achieved through positive motor cooling with fresh
outside air being continuously drawn through the
large breather tube directly over the motor.
Name Plate - Exact model and serial identification
on a permanent stamped aluminum plate.
Heat Baffle - Extends motor life by reducing the
amount of heat that penetrates through the bottom
of the motor support pan.
Lifting Lugs - Located under motor compartment
for ease of lifting unit during installation.
8
19

6
Options and Accessories
PERMATECTOR®
HI-PRO
POLYESTER
BAKED
ENAMEL
HI-PRO
POLYESTER
Self Draining Grease System:
Drain grease and rain water
back through the ductwork
into the specially designed
Greenheck hood. The hood
then channels grease and rain
water into the restaurant’s floor
grease trap.
Coatings: Wide variety of coatings and colors are
available for decorative to acidic applications.
Permatector™ is our standard coating.
Typically used for applications that
require corrosion resistance in indoor
and outdoor environments.
Hi-Pro Polyester is resistant to salt
water, chemical fumes and moisture in
more corrosive atmospheres. Typically
used for applications that require
superior chemical resistance, excellent
abrasion and outdoor UV protection. This
coating exceeds protective qualities of
Air Dried Heresite and Air Dry Phenolic.
Baked Enamel Decorative Coatings
are heat cured enamels applied either
as wet paints or electrostatic powders.
Customers can choose from 16 standard
decorative colors or color match any
color.
Windband Extension: Tube that raises fans
discharge an additional 36 in. for special code
requirements.
Curb Seal: Rubber seal between fan and curb to
assure proper sealing when attached to a curb.
Roof Curbs: Wide variety of roof curbs are
available for mounting the fan to the roof, including:
vented, flanged, pitched.
Vented Curb Extension:
Mounts between roof
curb and roof mounted
fans to meet NFPA
requirements of 40 in.
minimum discharge
above the roof when
mounted on a minimum
8 in. high roof curb.
Severe Duty Curb: Model SD is specifically
designed for the optional hurricane use. It is
attached directly to the building structure with
extremely high structural design load requirements.
Maximum design load is 130 psf.
Drain Connection:
Allows for single point
drainage of grease, water
or other residues.
Grease Trap: Aluminum
trap designed to collect
grease residue to avoid
drainage onto roof
surface.
Grease Trap with
Absorbent Material:
Same as above with an
absorbent material to
collect grease residue
and repel water for easy
periodic disposal.
Tie Down Points: Four
brackets located on the
windband for securing
the fan in heavy wind
applications.
Velocity Accelerator: Increases fan outlet/
discharge velocity. Up to 3,000 feet per minute.

7
Kitchen Ventilation
Solutions
Typical Installation - Commercial Kitchen (Grease)
The USGF is specifically designed for heavy restaurant grease
and food service applications. These fans are UL and cUL Listed
for grease removal and have been tested under high temperature
(400° F) and abnormal flare-up (600° F) conditions.
Due to high temperatures and grease-laden airstreams in
commercial kitchen ventilation, system designers must be aware
of governing codes and guidelines. The National Fire Protection
Association (NFPA) is the primary source upon where many
codes for commercial kitchens ventilation are based. Selected
information from NFPA is shown below. Local code authorities
should be consulted before proceeding with any kitchen
ventilation project.
Exhaust fans used in kitchen ventilation applications must have
external wiring. (Wiring must not be installed in airstream.)
Installation must include a means for inspecting, cleaning and servicing the exhaust fan.
(e.g. Hinged Curb Cap)
No dampers are to be installed in the system.
Wall Opening
Damper Frame Size
Damper Size
Mounting Hole Bolt Circle
Welded Duct
by Others
Recommended
Wall Opening
Mounting
Bolt Hole
Circle
Wall
Liquid Tight
Flexible Conduit
by Others
Welded Duct
by others
min. of 18 in.
above roof
deck per
NFPA
NEMA 3R
Disconnect
factory wired
from motor to
disconnect
through the
breather tube
(Optional)
Liquid Tight
Flexible Conduit
by Others
Recommended
Roof Opening
Roof Deck
Minimum 40"
Discharge
Height
8"min.
Grease
Trap
Vented Curb
Extension
External Wiring
External Wiring
Our Hoods and Filters.
Grease Grabber™
dual filtration system
works with the
Grease-X-Tractor™
filter to remove 80%
of the grease from
the kitchen exhaust.
Available in stainless
steel.
The Grease-X-
Tractor™ high
efficiency filter has
twice the grease
extraction capability
of a baffle filter.
Available in aluminum
or stainless steel.
Greenheck’s
Performance
Enhancing Lip
(PEL) helps direct
air to the filter and
improves capture and
performance
Full length, fully welded
integral grease trough
An integral 3-inch
airspace that meets
NFPA 96 clearance
requirements against
limited combustibles
Constructed of 304 /
430 18 ga. stainless
steel.
Standing seam
construction for added
strength
Redesigned flat light
panels allows for lights
to be installed vertically
and simplified field
installation
Fully welded joints - no
caulk
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4
5
6
7
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2
3
5
6
4
7
The high velocity
cartridge filters
offers dry cartridge
performance at
a lower cost.
Available in
aluminum or
stainless steel.
Baffle type filters
are the traditional
choice for
inexpensive grease
removal. Available
in aluminum,
stainless steel, or
non-stick coated.

8
Typical Installation and
Anchoring
Concrete Deck Anchoring
USGF
Size Fan Curb Cap Roof Opening Fasteners Per Side Outside Flange
141 - 161 22 x 22 (559 x 559) 18½ x 18½ (470 x 470) 5 31 x 31 (787 x 787)
180 - 200 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions in inches (millimeters).
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Minimum Concrete
Strength of 2000 PSI
1 in. (25 mm) Insulation
Roof Opening
5 in. (127 mm) Mounting Flange
Outside Flange
Center fasteners
on 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.
Minimum 1-3/4 in. (44 mm)
edge distance
2-1/2 in. (64 mm)
Embedment Recommended
minimum 1-5/8 in. (41 mm)
CONCRETE DECK ANCHORING DETAIL
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Outside of Roof Curb
1 in. (25 mm) less than Fan Curb Cap
Typical Mounting - Fan to Curb
USGF
Size
Fasteners
Per Side
Total
Fasteners
140 - 160 5 20
180 - 200 5 20
Fasteners on each side of the
fan are to be installed with one
fastener 4 in. (102 mm) from each
edge and one fastener centered.
The remaining fasteners are to be
equally spaced.
1/4 in. (6 mm) fastener minimum
5/16 in. (8 mm) recommended
See table for fastener quantities
FAN TO CURB MOUNTING DETAIL
H-GPF or SD curb
Fastener 4 in. (102 mm)
from curb edge

9
Typical Anchoring
Model Number Code
The Model number system is designed to completely identify the fan. The correct code letters must be
specified to designate the correct configuration. The remainder of the model number is determined by the
size and performance selected from the following pages.
USGF - 140 HP - 5
Configuration Motor HP
Ultimate Steel Grease Fan 4 = 1⁄410 = 1 30 = 3
3 = 1⁄315 = 11⁄250 = 5
Fan Size 5 = 1⁄220 = 2 75 = 71⁄2
140 through 200 7 = 3⁄4
Pressure Level
HP - High Pressure Wheel
XP - Extended High Pressure Wheel
Metal Building/Steel Deck Anchoring
USGF
Size Fan Curb Cap Roof Opening Fasteners Per Side Outside Flange
141 - 161 22 x 22 (559 x 559) 18½ x 18½ (470 x 470) 5 31 x 31 (787 x 787)
180 - 200 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions in inches (millimeters).
Roof Opening
Minimum 12 ga Steel
Roof Truss
Outside Flange
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
5 in. (127 mm) Mounting Flange
1 in. (25 mm) Insulation
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)
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Wood Deck Anchoring
USGF
Size Fan Curb Cap Roof Opening Fasteners Per Side Outside Flange
140 - 160 22 x 22 (559 x 559) 18½ x 18½ (470 x 470) 7 31 x 31 (787 x 787)
180 - 200 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions in inches (millimeters).
Roof Opening
Center fasteners
on flange
Outside Flange
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.
Wood Support Member
Nominal 2 x 4, 6, 8
Wood Decking
2 in. (51 mm) Minimum Embedment
5 in. (127 mm) Mounting Flange
1 in. (25 mm) Insulation
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Outside of Roof Curb
1 in. (25 mm) less than
Fan Curb Cap
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)

193 ⁄8
(492)
287 ⁄8
(733)
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
293⁄4*
(756)
26
(660)
13⁄4
(44)
10
USGF-140 - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0 0.125 0.25 0.375 0.5 0.75 1 1.25 1.5 1.75
USGF-140-4 1/4
590
CFM 1069 851
BHP 0.04 0.04
Sones 5.0 4.5
715
CFM 1295 1130 885
BHP 0.06 0.07 0.07
Sones 6.0 6.0 5.1
840
CFM 1521 1387 1217 969
BHP 0.10 0.11 0.11 0.11
Sones 7.1 7.3 6.8 6.2
965
CFM 1748 1635 1499 1333 1103
BHP 0.15 0.16 0.17 0.17 0.17
Sones 8.6 8.7 8.5 8.1 7.7
1105
CFM 2001 1906 1793 1667 1515 998
BHP 0.23 0.24 0.25 0.26 0.26 0.23
Sones 10.9 10.8 10.6 10.3 10.0 9.6
USGF-140-3 1/3
1210
CFM 2192 2106 2006 1896 1773 1443
BHP 0.30 0.31 0.32 0.33 0.34 0.34
Sones 12.2 12.2 11.7 11.6 11.2 10.9
USGF-140-5 1/2
1290
CFM 2337 2258 2166 2065 1957 1691 1221
BHP 0.36 0.38 0.39 0.40 0.41 0.42 0.37
Sones 13.2 13.3 12.7 12.6 12.3 12.0 11.3
1390
CFM 2518 2445 2362 2271 2174 1949 1643
BHP 0.45 0.47 0.48 0.50 0.51 0.52 0.51
Sones 14.9 14.7 14.2 13.2 12.9 12.1 11.0
USGF-140-7 3/4
1495
CFM 2708 2640 2565 2483 2396 2202 1967 1617
BHP 0.56 0.58 0.6 0.61 0.62 0.64 0.65 0.61
Sones 17.2 16.5 16.3 15.6 13.9 12.5 12.2 10.8
1595
CFM 2889 2826 2757 2683 2602 2430 2225 1968 1568
BHP 0.69 0.70 0.72 0.74 0.75 0.77 0.79 0.78 0.72
Sones 20 19.0 18.5 19.5 16.1 13.3 12.3 12.6 11.6
USGF-140-10 1
1725
CFM 3125 3066 3005 2936 2865 2711 2539 2339 2085 1704
BHP 0.87 0.88 0.90 0.92 0.94 0.97 0.99 1.00 0.98 0.91
Sones 26 23 22 24 24 15.1 13.4 14.3 13.8 13.8
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W.G.
MAXIMUM BHP AT A GIVEN RPM = (RPM/1726)3
MAXIMUM RPM = 1725
TIP SPEED (ft/min.) = RPM x 3.829
MAXIMUM MOTOR FRAME SIZE = 145T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/1.72
Roof Opening = 18½ x 18½ (470 x 470)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 125 lb. (57 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
11
193 ⁄8
(492)
287 ⁄8
(733)
293⁄4*
(756)
26
(660)
13⁄4
(44)
USGF-140HP - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75
USGF-140HP-4 1/4
895
CFM 331
BHP 0.06
Sones 6.1
1037
CFM 566
BHP 0.10
Sones 6.7
1179
CFM 733 563
BHP 0.13 0.14
Sones 8.9 9.2
1321
CFM 878 756 591
BHP 0.18 0.19 0.19
Sones 12.1 11.6 13.6
1465
CFM 1016 920 798 642
BHP 0.24 0.26 0.26 0.26
Sones 14.2 13.5 13.2 15.5
USGF-140HP-3 1/3
1605
CFM 1146 1063 965 846 704
BHP 0.31 0.33 0.34 0.34 0.34
Sones 15.2 14.4 14.2 14.0 15.2
USGF-140HP-5 1/2
1725
CFM 1256 1178 1098 999 879 747
BHP 0.38 0.40 0.42 0.43 0.43 0.42
Sones 16.1 15.4 15.0 14.9 14.7 15.7
1845
CFM 1363 1292 1219 1137 1042 924 800
BHP 0.46 0.48 0.50 0.52 0.52 0.52 0.51
Sones 17.0 16.6 16.2 16.0 15.9 15.6 16.1
USGF-140HP-7 3/4
1960
CFM 1463 1399 1330 1260 1176 1086 970 854
BHP 0.54 0.57 0.59 0.61 0.62 0.63 0.62 0.62
Sones 18.1 17.7 17.4 17.2 17.1 17.0 16.8 16.9
2035
CFM 1528 1468 1402 1335 1261 1175 1077 965 826
BHP 0.60 0.63 0.66 0.68 0.69 0.70 0.70 0.69 0.67
Sones 18.9 18.5 18.2 18.0 18.0 17.8 17.7 17.5 17.8
2110
CFM 1592 1536 1473 1409 1341 1262 1178 1073 965 804
BHP 0.67 0.70 0.72 0.75 0.77 0.78 0.78 0.78 0.77 0.73
Sones 19.8 19.3 19.1 19.0 18.9 18.8 18.6 18.5 18.3 20
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W.G.
MAXIMUM BHP AT A GIVEN RPM = (RPM/2285)3
MAXIMUM RPM = 2110
TIP SPEED (ft/min.) = RPM x 3.829
MAXIMUM MOTOR FRAME SIZE = 145T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/1.72
Roof Opening = 18½ x 18½ (470 x 470)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 125 lb. (57 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

193 ⁄8
(492)
287 ⁄8
(733)
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
293⁄4*
(756)
26
(660)
13⁄4
(44)
12
USGF-160 - Belt Drive
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W.G.
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0 0.125 0.25 0.375 0.5 0.625 0.75 1 1.25 1.5
USGF-160-4 1/4
730
CFM 2098 1905 1669 1389
BHP 0.13 0.15 0.15 0.15
Sones 8.1 8.0 7.8 7.8
778
CFM 2236 2058 1843 1596
BHP 0.16 0.18 0.19 0.18
Sones 8.9 8.7 8.5 8.4
826
CFM 2374 2209 2010 1790 1512
BHP 0.20 0.22 0.22 0.22 0.21
Sones 9.9 9.6 9.3 9.1 9.0
875
CFM 2515 2362 2177 1974 1744 1365
BHP 0.23 0.26 0.26 0.26 0.26 0.24
Sones 11.0 10.6 10.1 9.9 9.7 9.7
USGF-160-3 1/3
965
CFM 2774 2637 2477 2300 2109 1893 1584
BHP 0.31 0.34 0.35 0.35 0.35 0.34 0.33
Sones 12.4 12.0 11.5 11.2 10.8 10.6 10.5
USGF-160-5 1/2
1038
CFM 2984 2857 2712 2552 2382 2199 1992
BHP 0.39 0.42 0.43 0.44 0.44 0.43 0.43
Sones 13.7 13.3 12.8 12.4 12.1 11.8 11.6
1110
CFM 3191 3072 2941 2796 2641 2475 2297 1770
BHP 0.47 0.51 0.53 0.53 0.54 0.53 0.52 0.49
Sones 15.0 14.6 14.2 13.8 13.5 13.1 12.9 12.2
USGF-160-7 3/4
1188
CFM 3415 3304 3186 3053 2911 2764 2606 2246
BHP 0.58 0.62 0.64 0.65 0.65 0.66 0.65 0.64
Sones 16.7 16.3 15.8 15.4 15.0 14.7 14.5 14.0
1265
CFM 3636 3532 3426 3301 3172 3036 2894 2583 2163
BHP 0.70 0.74 0.77 0.78 0.79 0.79 0.79 0.78 0.75
Sones 18.5 18.1 17.7 17.2 16.8 16.5 16.3 15.8 15.2
USGF-160-10 1
1328
CFM 3817 3718 3619 3502 3383 3253 3124 2843 2510
BHP 0.81 0.85 0.89 0.90 0.91 0.91 0.92 0.90 0.89
Sones 20 19.6 19.2 18.7 18.3 18.0 17.8 17.4 16.9
1390
CFM 3996 3901 3806 3698 3584 3464 3340 3078 2785 2394
BHP 0.93 0.97 1.01 1.03 1.04 1.04 1.05 1.04 1.03 1.00
Sones 22 21 21 20 19.9 19.6 19.4 19.0 18.6 18.0
MAXIMUM BHP AT A GIVEN RPM = (RPM/1365)3
MAXIMUM RPM = 1390
TIP SPEED (ft/min.) = RPM x 4.352
MAXIMUM MOTOR FRAME SIZE = 145T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/1.72
Roof Opening = 18½ x 18½ (470 x 470)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 131 lb. (59 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
13
193 ⁄8
(492)
287 ⁄8
(733)
293⁄4*
(756)
26
(660)
13⁄4
(44)
USGF-160HP - Belt Drive
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Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0.5 0.625 0.75 0.875 1 1.25 1.5 1.75 2 2.25
USGF-160HP-4 1/4
825
CFM 889
BHP 0.12
Sones 7.0
910
CFM 1129 956
BHP 0.16 0.16
Sones 8.3 7.8
995
CFM 1331 1208 1042
BHP 0.21 0.21 0.21
Sones 9.6 9.3 8.8
1065
CFM 1487 1377 1252 1093
BHP 0.25 0.26 0.26 0.26
Sones 11.0 10.6 10.2 9.8
USGF-160HP-3 1/3
1165
CFM 1697 1608 1504 1395 1252
BHP 0.32 0.33 0.34 0.34 0.34
Sones 12.8 12.7 12.2 11.7 11.3
USGF-160HP-5 1/2
1255
CFM 1882 1799 1715 1617 1519 1218
BHP 0.40 0.41 0.42 0.43 0.43 0.42
Sones 13.1 12.8 12.5 12.0 11.5 10.6
1340
CFM 2053 1975 1897 1816 1724 1513
BHP 0.48 0.49 0.50 0.51 0.52 0.52
Sones 14.4 13.8 13.3 12.8 12.3 11.3
USGF-160HP-7 3/4
1441
CFM 2253 2180 2108 2036 1961 1790 1577
BHP 0.59 0.60 0.61 0.63 0.64 0.65 0.65
Sones 16.3 15.8 15.2 14.7 14.3 13.5 12.3
1535
CFM 2433 2368 2301 2233 2165 2015 1855 1638
BHP 0.70 0.72 0.73 0.74 0.76 0.78 0.79 0.78
Sones 18.1 17.7 17.2 16.8 16.4 15.7 14.9 13.5
USGF-160HP-10 1
1610
CFM 2573 2516 2452 2387 2322 2190 2037 1863 1651
BHP 0.80 0.82 0.83 0.85 0.86 0.89 0.90 0.91 0.90
Sones 19.6 19.2 18.8 18.4 18.1 17.5 16.9 15.8 14.3
1690
CFM 2722 2671 2611 2550 2488 2365 2228 2082 1899 1664
BHP 0.92 0.94 0.95 0.97 0.98 1.01 1.03 1.05 1.05 1.03
Sones 21 21 21 20 20 19.5 19.1 18.6 16.9 15.0
MAXIMUM BHP AT A GIVEN RPM = (RPM/1660)3
MAXIMUM RPM = 1690
TIP SPEED (ft/min.) = RPM x 4.352
MAXIMUM MOTOR FRAME SIZE = 145T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/1.72
Roof Opening = 18½ x 18½ (470 x 470)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 131 lb. (59 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

193 ⁄8
(492)
287 ⁄8
(733)
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
293⁄4*
(756)
26
(660)
13⁄4
(44)
14
USGF-160XP - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in nches wg
1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25
USGF-160XP-5 1/2
1550
CFM 968
BHP 0.34
Sones 10.0
1648
CFM 1157 854
BHP 0.42 0.39
Sones 11.1 10.2
1750
CFM 1322 1116 726
BHP 0.52 0.49 0.43
Sones 12.1 11.4 10.9
USGF-160XP-7 3/4
1880
CFM 1515 1359 1139 744
BHP 0.65 0.63 0.60 0.52
Sones 13.7 13.1 12.3 12.2
1942
CFM 1599 1456 1271 984
BHP 0.71 0.70 0.68 0.63
Sones 14.3 13.9 13.2 12.6
2005
CFM 1684 1552 1392 1161 777
BHP 0.77 0.78 0.76 0.72 0.63
Sones 15.0 14.7 14.1 13.4 13.6
USGF-160XP-10 1
2138
CFM 1861 1743 1611 1451 1226 869
BHP 0.93 0.95 0.94 0.91 0.87 0.78
Sones 16.6 16.4 15.9 15.4 14.8 15.1
2205
CFM 1946 1834 1713 1578 1395 1127 634
BHP 1.01 1.03 1.04 1.01 0.99 0.92 0.73
Sones 17.5 17.3 17.0 16.4 15.9 15.5 16.7
USGF-160XP-15 1½
2310
CFM 2076 1974 1865 1741 1597 1415 1134 644
BHP 1.17 1.18 1.2 1.18 1.16 1.12 1.04 0.83
Sones 19.0 18.7 18.5 18.1 17.5 17.1 16.8 18.4
2432
CFM 2226 2134 2031 1926 1804 1660 1483 1225 826
BHP 1.36 1.36 1.38 1.40 1.38 1.35 1.31 1.23 1.07
Sones 21 20 20 20 19.6 19.1 18.7 18.7 19.9
2525
CFM 2339 2250 2155 2056 1946 1828 1676 1487 1221 810
BHP 1.52 1.52 1.54 1.56 1.56 1.53 1.50 1.45 1.35 1.16
Sones 22 22 22 22 21 21 20 20 20 22
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MAXIMUM BHP AT A GIVEN RPM = (RPM/2170)3
MAXIMUM RPM = 2525
TIP SPEED (ft/min.) = RPM x 3.534
MAXIMUM MOTOR FRAME SIZE = 145T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/1.72
Roof Opening = 18½ x 18½ (470 x 470)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 131 lb. (59 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
15
21
(533)
353⁄8
(899)
285⁄8*
(727)
30
(762)
13⁄4
(44)
USGF-180 - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0 0.125 0.25 0.5 0.75 1 1.25 1.5 1.75 2
USGF-180-4 1/4
630
CFM 2380 2154 1861
BHP 0.13 0.15 0.16
Sones 7.1 6.4 5.5
745
CFM 2815 2617 2448 1763
BHP 0.22 0.24 0.26 0.25
Sones 9.2 8.6 8.1 7.1
USGF-180-3 1/3
820
CFM 3098 2916 2759 2257
BHP 0.30 0.32 0.34 0.34
Sones 11.2 10.4 10.0 9.0
USGF-180-5 1/2
940
CFM 3551 3389 3243 2879 2363
BHP 0.45 0.47 0.49 0.52 0.50
Sones 13.8 13.5 13.1 12.4 11.2
USGF-180-7 3/4
1010
CFM 3816 3664 3526 3242 2799 2105
BHP 0.56 0.58 0.61 0.65 0.64 0.58
Sones 15.4 15.2 14.9 14.7 13.7 11.8
1075
CFM 4061 3919 3786 3554 3141 2652
BHP 0.67 0.70 0.73 0.78 0.78 0.75
Sones 16.5 16.2 15.8 151.5 14.7 13.3
USGF-180-10 1
1185
CFM 4477 4348 4224 4005 3703 3336 2841
BHP 0.90 0.93 0.96 1.01 1.04 1.04 0.99
Sones 18.5 17.9 17.1 16.5 16.0 15.2 14.4
USGF-180-15 1½
1275
CFM 4817 4697 4578 4369 4163 3799 3437 2930
BHP 1.12 1.15 1.19 1.24 1.30 1.30 1.28 1.22
Sones 21 20 19.5 18.7 18.2 17.5 16.7 15.9
1360
CFM 5138 5026 4913 4710 4532 4232 3912 3537 3023
BHP 1.36 1.39 1.43 1.49 1.56 1.58 1.58 1.54 1.46
Sones 23 23 22 21 21 20 19.2 18.3 17.3
USGF-180-20 2
1430
CFM 5402 5296 5189 4993 4819 4593 4270 3968 3567 3001
BHP 1.58 1.62 1.66 1.72 1.79 1.83 1.83 1.83 1.76 1.66
Sones 25 25 25 24 23 22 22 21 19.5 18.2
1495
CFM 5648 5546 5443 5254 5082 4921 4598 4313 3983 3564
BHP 1.80 1.84 1.89 1.96 2.02 2.10 2.10 2.10 2.06 1.99
Sones 28 27 27 26 25 25 24 23 22 21
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MAXIMUM BHP AT A GIVEN RPM = (RPM/1167)3
MAXIMUM RPM = 1495
TIP SPEED (ft/min.) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
Roof Opening = 20½ x 20½ (521 x 521)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 190 lb. (86 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
16
21
(533)
353⁄8
(899)
285⁄8*
(727)
30
(762)
13⁄4
(44)
USGF-180HP - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75
USGF-180HP-4 1/4
795
CFM 1570
BHP 0.22
Sones 8.3
845
CFM 1799
BHP 0.26
Sones 9.5
USGF-180HP-3 1/3
925
CFM 2104 1688
BHP 0.34 0.35
Sones 10.8 9.8
USGF-180HP-5 1/2
1065
CFM 2581 2323 1933
BHP 0.50 0.52 0.53
Sones 13.8 12.5 12.4
USGF-180HP-7 3/4
1215
CFM 3063 2868 2626 2286 1854
BHP 0.72 0.76 0.78 0.79 0.75
Sones 15.0 14.5 14.0 13.4 12.9
USGF-180HP-10 1
1275
CFM 3253 3066 2853 2566 2209
BHP 0.82 0.87 0.89 0.91 0.89
Sones 16.7 15.8 15.4 14.9 14.3
1335
CFM 3441 3261 3075 2839 2523 2156
BHP 0.93 0.98 1.02 1.04 1.04 1.01
Sones 18.7 17.4 17.0 16.6 16.1 15.6
USGF-180HP-15 1½
1430
CFM 3735 3566 3401 3206 2964 2669 2320
BHP 1.13 1.19 1.23 1.26 1.27 1.28 1.24
Sones 22 21 19.7 19.3 18.9 18.4 17.9
1530
CFM 4035 3884 3728 3574 3376 3135 2859 2534
BHP 1.36 1.43 1.48 1.53 1.55 1.56 1.57 1.53
Sones 24 23 22 21 20 19.8 19.3 18.6
USGF-180HP-20 2
1610
CFM 4273 4136 3986 3840 3674 3485 3233 2965 2656
BHP 1.58 1.64 1.70 1.76 1.79 1.81 1.82 1.82 1.78
Sones 25 24 23 23 22 21 21 20 19.2
1685
CFM 4495 4369 4226 4085 3945 3768 3575 3325 3061 2766
BHP 1.79 1.86 1.93 1.99 2.04 2.07 2.08 2.09 2.08 2.04
Sones 27 26 25 26 24 23 22 21 21 20
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MAXIMUM BHP AT A GIVEN RPM = (RPM/1315)3
MAXIMUM RPM = 1685
TIP SPEED (ft/min.) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
Roof Opening = 20½ x 20½ (521 x 521)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 190 lb. (86 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
17
21
(533)
353⁄8
(899)
285⁄8*
(727)
30
(762)
13⁄4
(44)
USGF-200 - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0 0.125 0.25 0.375 0.5 0.75 1 1.25 1.5 1.75
USGF-200-4 1/4
500
CFM 2812 2386 1822
BHP 0.14 0.15 0.15
Sones 6.2 5.4 4.6
605
CFM 3403 3054 2675 2144
BHP 0.25 0.26 0.26 0.25
Sones 8.1 7.4 6.7 6.1
USGF-200-3 1/3
665
CFM 3740 3422 3096 2699 2073
BHP 0.33 0.34 0.35 0.35 0.33
Sones 9.4 8.8 8.1 7.5 7.0
USGF-200-5 1/2
760
CFM 4275 3994 3718 3413 3048
BHP 0.49 0.51 0.52 0.52 0.51
Sones 12.1 11.7 10.9 10.1 9.4
USGF-200-7 3/4
820
CFM 4612 4350 4098 3828 3523 2606
BHP 0.61 0.63 0.65 0.65 0.65 0.61
Sones 14.1 14.1 13.0 12.2 11.4 10.7
875
CFM 4922 4676 4439 4192 3922 3240
BHP 0.75 0.77 0.78 0.79 0.79 0.78
Sones 16.3 16.3 15.2 14.7 13.5 12.4
USGF-200-10 1
960
CFM 5400 5176 4958 4742 4508 3985 3169
BHP 0.98 1.01 1.03 1.04 1.04 1.04 1.00
Sones 18.7 18.4 17.7 17.0 16.4 15.0 14.4
USGF-200-15 1½
1030
CFM 5793 5585 5380 5179 4968 4503 3917 2972
BHP 1.22 1.24 1.26 1.28 1.29 1.29 1.27 1.18
Sones 21 21 20 19.2 18.7 17.5 16.4 16.8
1100
CFM 6187 5992 5798 5610 5421 5006 4529 3861
BHP 1.48 1.51 1.53 1.55 1.57 1.57 1.57 1.53
Sones 23 23 23 22 21 20 19.3 18.6
USGF-200-20 2
1155
CFM 6496 6311 6125 5946 5767 5383 4948 4410 3629
BHP 1.72 1.74 1.77 1.79 1.81 1.81 1.81 1.80 1.71
Sones 24 24 23 23 22 21 20 19.2 19.9
1210
CFM 6806 6628 6451 6279 6108 5748 5350 4892 4289 3365
BHP 1.97 2.00 2.03 2.05 2.07 2.09 2.09 2.08 2.04 1.88
Sones 25 24 23 23 22 21 21 19.8 19.7 21
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MAXIMUM BHP AT A GIVEN RPM = (RPM/946)3
MAXIMUM RPM = 1210
TIP SPEED (ft/min.) = RPM x 5.595
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
Roof Opening = 20½ x 20½ (521 x 521)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 213 lb. (97 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan sones at 5 ft (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: Free inlet hemispherical sone levels. The AMCA Certified Ratings Seal applies to sone ratings only.
18
21
(533)
353⁄8
(899)
285⁄8*
(727)
30
(762)
13⁄4
(44)
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75
USGF-200HP-5 1/2
740
CFM 2024
BHP 0.31
Sones 8.1
880
CFM 2779 2317
BHP 0.51 0.52
Sones 10.5 9.5
USGF-200HP-7 3/4
945
CFM 3094 2711 2092
BHP 0.62 0.64 0.62
Sones 12.2 11.5 10.6
1010
CFM 3397 3067 2637
BHP 0.75 0.78 0.79
Sones 14.5 13.7 13.2
USGF-200HP-10 1
1110
CFM 3851 3561 3242 2806
BHP 0.98 1.02 1.04 1.04
Sones 16.9 16.2 15.7 15.5
USGF-200HP-15 1½
1190
CFM 4207 3944 3661 3321 2850
BHP 1.20 1.24 1.27 1.29 1.26
Sones 19.0 18.1 17.5 17.3 17.5
1270
CFM 4558 4312 4055 3789 3433 2944
BHP 1.44 1.49 1.53 1.56 1.56 1.53
Sones 22 21 20 19.7 19.3 19.8
USGF-200HP-20 2
1335
CFM 4837 4606 4369 4116 3826 3482 2946
BHP 1.67 1.71 1.76 1.79 1.82 1.82 1.75
Sones 23 23 22 21 21 21 22
1400
CFM 5110 4898 4674 4436 4195 3880 3515
BHP 1.91 1.96 2.01 2.05 2.09 2.09 2.08
Sones 24 24 24 23 21 22 23
USGF-200HP-30 3
1465
CFM 5382 5186 4972 4752 4521 4269 3956 3556
BHP 2.18 2.23 2.28 2.33 2.37 2.40 2.40 2.37
Sones 26 25 25 25 23 23 24 25
1600
CFM 5943 5775 5581 5385 5182 4971 4760 4476 4189 3760
BHP 2.81 2.88 2.93 2.99 3.03 3.08 3.13 3.13 3.13 3.06
Sones 29 28 29 30 29 26 24 26 28 31
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W.G.
MAXIMUM BHP AT A GIVEN RPM = (RPM/1093)3
MAXIMUM RPM = 1600
TIP SPEED (ft/min.) = RPM x 5.595
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
USGF-200HP - Belt Drive
Roof Opening = 20½ x 20½ (521 x 521)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 213 lb. (97 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.

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Spun steel exhaust fans shall be centrifugal belt driven type. Fan wheel shall be centrifugal backward
inclined type. The wheel shall be constructed of steel and coated with a non-stick coating similar to Teflon®
as manufactured by Du Pont®. Wheel shall include a wheel cone carefully matched to the inlet cone for
precise running tolerances. Wheels shall be statically and dynamically balanced.
The fan housing shall be constructed of 16 gauge galvaneal steel with a rigid internal support structure and
shall be leakproof. The fan housing shall be constructed with a one piece windband with an integral rolled
bead for added strength and shall be joined to the curb cap with a continuously welded seam.
Fan’s windband shall have a clean out port, a 4-inch diameter hole on the outside of the fan’s windband
with a grease repellent compression rubber fit, allowing access to entire wheel for cleaning.
Motors shall be heavy duty ball bearing type, carefully matched to the fan load, and furnished at the
specified voltage, phase and enclosure. Drive frame assembly shall be constructed of heavy gauge
galvanized steel. Motors and drives shall be mounted on heavy duty true vibration isolators, out of the
airstream. Fresh air for motor cooling shall be drawn into the motor compartment through a ten square inch
tube free of discharge contaminants. Motors and drives shall be readily accessible for maintenance.
Precision ground and polished 1-inch minimum diameter fan shafts shall be mounted in cast pillow block
lubricatable ball bearings. Bearings shall be selected for a minimum L10 life in excess of 100,000 hours
(L50 average life of 500,000 hours) at maximum cataloged operating speed. Dual drives shall be sized for a
minimum of 150% of driven horsepower. Pulleys shall be of the cast type, keyed and securely attached to
the wheel and motor shafts.
Motor pulleys shall be adjustable for final system balancing. All fans shall have a dual belt and pulley
system. A NEMA-3R disconnect switch shall be factory installed and wired from the fan motor to a junction
box installed outside the motor compartment.
All fans shall bear the AMCA Certified Ratings Seal
for sound and air performance.
Each fan shall bear a permanently affixed
manufacturer’s engraved metal nameplate containing
the model number and individual serial number for
future identification.
Fans shall be Listed by Underwriters Laboratory for
UL/cUL 762 Listed for all electrical components and
grease removal.
Hinge kit shall be constructed of heavy gauge
hinges and shall include hold open cables for field
installation.
Grease trap shall include the drain connection. The
unit shall collect grease and water from the fan and
extract the grease from the water for ease of grease
disposal.
Fans shall be model USGF as manufactured by
Greenheck Fan Corporation in Schofield, Wisconsin.
Specifications

Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the purchase date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
P.O. Box 410 • Schofield, WI 54476-0410 • Phone [phone] • greenheck.com
Building Value in Air
Our Warranty
Prepared to Support
Green Building Efforts
Greenheck delivers value
to mechanical engineers by
helping them solve virtually
any air quality challenges
their clients face with a
comprehensive selection of
top quality, innovative air-
related equipment. We offer
extra value to contractors
by providing easy-to-install,
competitively priced, reliable
products that arrive on time.
And building owners and
occupants value the energy
efficiency, low maintenance
and quiet dependable operation
they experience long after the
construction project ends.
Catalog USGF Rev. 5 February 2008
Copyright © 2008 Greenheck Fan Corp.
Additional Grease
Exhaust Solutions
Series C models CUE, CUBE, CW and CWB are commonly used for
general clean air, mild grease and fume hood exhaust applications.
Both Roof Upblast and Sidewall configurations are specifically
designed to discharge air directly away from the mounting surface.
These models are constructed of aluminum and use an aluminum
backward inclined wheel. They are UL Listed for electrical or grease.
Performance capacities ranges up to 5 in. wg (1250 Pa) and up to
30,000 cfm (51,000 m3/hr).
Model SWB centrifugal backward inclined belt driven utility fans are
designed for supply, exhaust and return air applications requiring higher
discharge velocities and high static pressures. The SWB Series 100 is for
general clean air applicators. The SWB Series 200 fans are constructed
with heavy gauge steel. Designed for light industrial duty and grease
applications with capacities ranges up to 2,7000 cfm (45,900 m3/hr) and up
to 5 in. wg (1250 Pa) of static pressure. SWB fans can be mounted indoors
or outdoors.
Model TCB inline belt driven fans are the ideal choice for installations
with straight-through air flow in ducted systems. The wheels used are
designed to provide higher efficiencies and lower sound levels. The fan
itself can be mounted horizontally or vertically. Performance capacities
ranges up to 24,000 cfm (40,800 m3/hr) and up to 4 in. wg (1,000 Pa) of
static pressure.