Download Greenheck Fan Centrifugal Roof Downblast Exhaust Fans GB User's Manual

Centrifugal Roof Downblast Exhaust Fans
• General Clean Air • Light Contaminants
• Seismic • High Wind • Variable Volume
Models G and GB
Performance data now included.
June
2011
Models G and GB
Spun Aluminum • Downblast
Centrifugal Roof Exhaust Fans
Contents
Performance and Dimensions:
Model Comparison. . . . . . . . . . . . . . . . . . . . . . 3
Models G-060-095 . . . . . . . . . . . . . . . . . . . 14-17
Construction Features. . . . . . . . . . . . . . . . . . 4-5
Models G-097-G203. . . . . . . . . . . . . . . . . . 18-31
Emergency Smoke Control. . . . . . . . . . . . . . . 6
Seismic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GB-071-200. . . . . . . . . . . . . . . . . . 18-32
Models GB-220-540. . . . . . . . . . . . . . . . . . 33-46
Specifications:
High Wind & Hurricane. . . . . . . . . . . . . . . . . . . 7
Vari-Green™ Motors and Controls. . . . . 47
Vari-Green™ Motor and Controls. . . . . . . . . 8-9
Direct Drive . . . . . . . . . . . . . . . . . . . . . . . 48
Demand Control Ventilation. . . . . . . . . . . . . . . 9
High Wind & Hurricane, Seismic G Fan. 49
Belt Drive . . . . . . . . . . . . . . . . . . . . . . . . . 50
Typical Installations. . . . . . . . . . . . . . . . . . 12-13
High Wind & Hurricane,
Seismic & Smoke Control GB Fan . . . . . 51
Model Number Code. . . . . . . . . . . . . . . . . . . 13
Quick Build Programs . . . . . . . . . . . . . . . . . . 52
Roof Curbs, Options, Accessories . . . . . . 10-11
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Codes and Certifications
Greenheck Fan Corporation certifies that the Models
G and GB fans shown herein are 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 Models G and GB are shown on
pages 14 - 46.
G and GB models are listed for electrical
(UL/cUL 705) File no. E40001
GB models for Emergency Smoke Control Systems
(UL/cUL Listed for 500˚F (260˚C) for 4 hours and
1,000˚F (538˚C) for 15 minutes) File no. MH17511
*UL/cUL is optional
and must be specified
High Wind Certification
Seismic Certification
Miami-Dade NOA for high wind and hurricane zones
OSHPD No. 0148-10 - Office of Statewide Health
Planning and Development (California)
IBC 2006 and 2009 - International Building Code
Models G and GB
Spun Aluminum • Downblast
Centrifugal Roof Exhaust Fans
Model Comparison







 
 


Performance
Maximum Volume
(cfm)
Mixed Flow
Propeller/Axial
Centrifugal
Direct
Belt
High Wind (150 mph)*
Continuous High Temp
(above 200°F )
Smoke Control (UL)**
Grease (UL 762)
Spark Resistant
Contaminated Air
General/Clean Air
Recirculate
Reversible
Supply
Wall
Hanging
Base/Floor
Roof Curb


Impeller
Type
Relative Cost
GB


Drive
Type
Application
Maximum Static
Pressure
(in. wg)
G
Indoor
Outdoor
Model
Airflow
Exhaust
Mounting
Ceiling Mounted
Location
6,308
1.5
$
44,700
3.25
$
*High wind limited to sizes 300 and smaller
**Smoke Control available on models: 101, 101HP, 121, 131, 141, 141HP, 161, 161HP, 200, 240, 300, 360, 420 and 480.
Greenheck models G and GB centrifugal roof
exhaust provide the industry’s best performance and
durability for general clean air applications where air is
discharged downward, toward the roof surface.
• Broadest performance in the industry, up to
3.25 in. wg (810 Pa) and 45,000 cfm (76,500 m3/hr).
• Most advanced motor cooling of any fan in its class.
• 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.
• Greenheck subjects these products to extensive life
testing, assuring you that the fans will provide years
of reliable performance.
Direct Drive, G
• Use for short and/or low resistance ductwork
Belt Drive, GB
• For average length and/or average
resistance ductwork
• High volume/average pressure
High Pressure, GB-HP and G-HP
• For long and/or high resistance ductwork
• Low volume/high pressure
3
Construction Features
Models G and GB
Standard Construction Features
1
Wheel
An aluminum, backward-inclined, non-overloading centrifugal wheel is utilized to
generate high-efficiency and minimal sound. Wheel cones are carefully matched to
the venturi for maximum efficiency. Each wheel is robotically welded and statically
and dynamically balanced for long life and quiet operation.
2
Disconnect
Switch
NEMA-1 switch is factory mounted and wiring is provided from the motor as standard
(other switches are available). All wiring and electrical components comply with the
National Electrical Code® (NEC) and are either UL Listed or Recognized.
3
Fan Shaft
Precisely sized, ground and polished so the first critical speed is at least 25% over
the maximum operating speed. Where the shaft makes contact with bearings, tight
tolerances result in longer bearing life.
4
Bearings
100% factory tested and designed specifically for air handling applications with a
minimum L10 life in excess of 100,000 hours (L 50 life of 500,000 hours).
5
Motor
Carefully matched to the fan load and is mounted out of the airstream.
6
Motor Cover
Constructed of aluminum, machine-punched, and attached with fasteners that provide
for easy removal and access to motor compartment and drive assembly.
7
Motor Cooling
Cooling fins located on top of the fan wheel draw outside air through a large space
between the fan shroud and the motor cover directly into the motor compartment.
Positive motor cooling with fresh air results in maximum motor life.
8
Lifting Points
Various lifting points are located on the drive frame and bearing plate (on select sizes).
9
True Vibration
Isolation
Vibration isolators, with no metal-to-metal contact, support the drive assembly and
wheel for long life and quiet operation.
10
Drive Assembly
Belts, pulleys, and keys are oversized 150% of driven horsepower. Machined cast
pulleys are adjustable for final system balancing. Belts are static-free and oil-resistant.
11
Lower Windband
Heavy-gauge aluminum with formed edges for added strength and provides
weather resistance.
12
Curb Cap
Curb cap (with integral deep spun venturi) is constructed of aluminum and is one-piece
for a weather-tight fit.
13
Internal Conduit
Chase
A large diameter conduit for installing electrical wiring through the curb cap into the
motor compartment.
14
Nameplate
Permanent stamped aluminum plate for exact model and serial number identification.
15
Galvanized
Birdscreen
Rigid wire protects the fan discharge from birds and small objects.
16
Fan Shroud
One-piece, heavy-gauge aluminum with a rolled bead for extra strength directs
exhaust air downward.
17
Mounting Holes
Curb cap has prepunched mounting holes to ensure correct attachment to the roof.
High Wind Construction Features
4
18
Internal Supports
Heavy-gauge supports and bracing are added for additional strength to withstand
a wind of 150 mph (75 psf).
19
Reinforced
Wind Band
High wind fans include additional reinforcement for maximum strength.
Roof Curb
(page 10)
High wind load fans are certified for use with Greenheck model SD, SDP, GPF or
equivalent in high wing applications. Roof curbs ship separate for field installation
with attachment details provided.
Construction Features
Models G and GB
6
7
5
15
1
11
14
12
8
Model G
Direct Drive
8
Drive Frame
(Belt Drive)
3
10
4
8
16
2
9
13
18
19
Model GB
Belt Drive
17
5
Applications
G and GB models
Emergency Smoke Control - GB
When you buy a Greenheck
model GB with the smoke
control option, you receive a
fan with the industry’s best
performance and durability for
smoke control applications (as
found in emergency smoke
control systems).
GB smoke control models are:
101, 101-HP, 121, 131, 141, 141-HP,
161, 161-HP, 200, 240, 300, 360,
420, 480
Seismic - G and GB
• UL/cUL Listed for 500°F (260°C) for 4 hours and
1,000°F (538°C) for 15 minutes.
• Half the weight of traditional smoke control fans,
ideal choice for roof load concerns.
• Low profile, height is less than half of traditional
smoke control fans, maximum of 521⁄2 inches
(1334 mm) from curb cap to top of fan.
• Multiple applications, capable of exhausting
general clean air and satisfying emergency smoke
control regulations.
With changes in building codes and standards more equipment is
being required to be seismically certified in areas of the country not
commonly thought of as being in seismically active zones.
The International Building Code (IBC) is designed to provide model
code regulations that safeguard public health and safety in all U.S.
communities. This code is intended to improve the performance and
design of non-structural systems subject to seismic events.
The State of California, one of the most active seismic areas in the
United States, has the Office of Statewide Health Planning and
Development (OSHPD) to regulate the design and construction of
healthcare facilities to ensure they are safe and
capable of providing services to the public after
a seismic event. OSHPD developed their own
unique certification process to incorporate
the IBC and ASCE testing standards to
ensure equipment remains operable after a
seismic event.
Protocols designed for seismic standards:
6
Seismic
Testing Criteria
All Greenheck seismically certified models have been tested using the most severe seismic event that
is found on the Spectral Response Map per IBC Figures 1613.5 (1-2). Our testing is performed under
the worst case scenario using the highest mapped seismic load, highest level occupancy category,
worst case site class, and highest code mandated importance factor, thereby allowing Greenheck’s
seismically certified fans to be used anywhere in the United States under any conditions
California OSHPD
Test Protocols
The California Office of Statewide Health Planning and Development (OSHPD) requires all certified
models be shake table tested in accordance with ICC ES AC-156, in which the fans are physically
subjected to the same or greater forces than they will see during a seismic event. Subjecting
Greenheck model G and GB fans to this type of testing ensures the fans will operate without
problems after a seismic event.
OSHPD Certification
No. 0148-10
The OSHPD certification numbers and supporting documents can be viewed on OSHPD’s
website ensuring that the fan has been subjected to and passed rigorous testing standards.
State Licensed
P.E. Calculations
When using the fans in applications which are not covered by California OSHPD standards,
Greenheck models G and GB have been certified by a third party engineering firm to IBC 2006, 2009
and ASCE 7-05 standards. These engineers hold professional engineering (P.E.) licenses in all 50
states, so no matter where your job is located, you are backed by a P.E. signature for your state.
Certified
Independent
Third-Party Testing
All Greenheck seismically certified fan models have gone through extensive testing procedures.
Greenheck models G and GB have been certified to IBC 2006, 2009, ASCE 7-05 and California
OSHPD standards through both engineering calculations and shake table testing of all models by
independent third party engineering firms.
Applications
G and GB models
High Wind and Hurricane - G and GB
Greenheck is leading the High Wind Standard for roof top fans and
ventilators. Forceful winds and wind-borne debris are the cause of
most hurricane damage. Hurricane winds start at 75 mph. At speeds
over 150 mph, wind can exert a force of 75 pounds per square foot
of pressure or over 900 pounds on a fan and curb. Forceful winds are
not the only problem, wind-borne debris can also cause detrimental
effects to objects and structures. High winds and extreme forces
are the cause of most storm damage. By analyzing calculations,
computer simulations, actual testing, and other standards—
Greenheck developed the High Wind Standard.
Protocols designed
to protect against wind borne
debris and severe wind loads:
U.S. continent
averaged
tornado frequency.
Atlantic, Gulf and Pacific history of major hurricane tracks.
Structural
Performance Load
A static load that is 1.5 times the design load (91.5 pounds per square foot of pressure) is applied
both positively and negatively to simulate wind force loads in each direction. Structural Performance
per Dade County Protocol TAS-202 (ASTM-E330).
Miami-Dade County
Test Protocols
Greenheck worked with Miami-Dade County to outline a High Velocity Hurricane Zone standard for
rooftop fans. Greenheck model USGF was the first rooftop fan certified and approved by the MiamiDade Building Code Compliance office and Texas Department of Insurance for use in hurricane
zones. Models G and GB have been certified by an independent third party to the ASTM E-330 Static
Pressure Difference Standard, Florida Building Code Test Protocol TAS-201 (large missile impact),
202 (static pressure difference) and 203 (cyclic pressure) Static Pressure Difference.
Miami-Dade NOA
Numbers
The certifications can be viewed on the Miami-Dade County website under the NOA numbers listed
below. Models G and GB are the first downblast aluminum fans in the industry that have received
a Miami-Dade NOA for high wind (150 mph) and hurricane zones. Miami-Dade NOA 09-0624.09 for
models G and GB.
Florida Product
Approval
Florida Product Approval ensures that products which have been approved can be used anywhere in
the State of Florida which are not governed by the Miami-Dade County high wind regulations. More
information can be found on the Florida Building Code website. Florida Product Approval FL13225.1
for models G and GB
State Licensed
P.E. Calculations
Structural calculations performed by a licensed Professional Engineer (P.E.) on models G and GB
include Finite Element Analysis (FEA) and a stamped P.E. report of the fans compliance to ASCE
7-02 Minimum Design Loads for Buildings and Other Structures Standard and the Florida Building
Code. The ASCE 7-02 Standard meets the IBC, Florida and Miami-Dade codes. The models have
been proven to withstand winds in excess of 150 mph (75 psf).
Computational Fluid
Dynamics (CFD)
All Greenheck high wind models have been analyzed using Computational Fluid Dynamics (CFD).
CFD is computer software designed to simulate the flow of high speed (150 mph) winds over the
surface of objects. The software records the force profile exerted on the fan so it can be utilized
in Finite Element Analysis (FEA).
Finite Element
Analysis (FEA)
Utilizing the results from CFD analysis, Greenheck can accurately predict the stress, strain,
and deflection resulting from high wind loads. Greenheck high wind units have been proven
to withstand 150 mph winds through Finite Element Analysis utilizing CFD results.
7
Options
Vari-Green™ Motor - Model G
• Direct drive fans are often preferred where
maintenance access is difficult.
Greenheck’s electronically commutated
Vari-Green™ (VG) motor combines motor
technology, controllability and energyefficiency into one single low maintenance unit and
is the industry’s first fully controllable motor. When
combined with Greenheck’s G fans all the CFM
and static pressure
ranges of a belt drive
can be attained with
the benefits of a
direct drive.
• The Vari-Green motor reduces noise and vibration
as well as providing solutions for variable volume
system balancing.
The Vari-Green
motor is available in
115 volt single phase
horsepower; 1/4,
1/2, 3/4 and
50/60 Hz power.
Features
1.Vari-Green dial on motor control
A potentiometer (dial on motor control) is
mounted right on the motor for easy speed
adjustment for system balance. Simply turn a
dial instead of adjusting belts and pulleys.
2.Control wire inputs
Inputs provide a 0-10V DC signal to the motor
from Building Automated System sensors or other
controls to adjust motor speed.
1
Benefits
2
Operates on AC power that’s converted to DC—
providing a more efficient motor operation as
compared to an AC operation.
• The motor can attain up to 85% efficiency and
reduce energy consumption.
• Watt savings of 30-70% depending on RPM.
Note: As motor speed is turned down, efficiency
stays constant as compared to an AC motor that
decreases dramatically.
• Operates cooler than a standard AC motor.
A cooler motor has longer motor life and reduces
energy consumption.
• 80% usable RPM turndown vs. 30%, see chart
Variable Volume
Variable volume or demand ventilation offers
significant energy savings by only exhausting air
when necessary throughout a day. This type of
application can greatly reduce the operating costs
associated with air conditioning and heating. Either
a Vari-Green motor or standard VFD compatible
motor can function within a variable volume system
and help reduce energy consumption.
75%
INPUT POWER (WATTS)
500
G-123
with PSC
Not recommended
400
300
Length of each curve indicates the practical
turndown range. Data is for 1/2 hp motors
with load of 0.35 BHP at full speed.
200
100
0
0
350
GB-123
Single Phase*
FAN SPEED (RPM)
EEnergy
Savings
S
100%
100
80$$$$$$$$$$$$$$$$$$$$$$$$
60$$$$$$$$$$$$$$$$$$$$$$$$
40$$$$$$$$$$$$$$$$$$$$$$$$
20$$$$$$$$$$$$$$$$$$$$$$$$
0%$$$$$$$$$$$$$$$$$$$$$$$$
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Time of Day
Series 1
Demand controlled ventilation offers significant energy savings by
exhausting only the necessary amount of air throughout the day.
G-123 with
1750
* GB is a belt driven fan
The length of each curve indicates the practical turndown range.
Data is for 1/2 hp motors with load of 0.35 Bhp at full speed
• G fans with Vari-Green motors can provide all
the CFM and static pressure ranges of a
comparable belt drive.
• Maintenance costs are reduced as there are
no belts or bearings to replace and no pulleys
to adjust.
8
Hypothetical
Variable Volume - Load Shape
% of Operation
50%
600
% of Operation
Motor Turndown Comparison
Constant Volume - Load Shape
100
80
60
40
20
0%
1 2 3 4
Series 2
5 6
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Time of Day
Options
Example: Initial Cost Comparison
Belt Drive vs. Direct Drive Vari-Green
Demand Control Ventilation
for multi-story buildings
GB-121
G-123-VG
$0
100
200
300
Fan Price
400
500
600
700
VFD Price
The diagram shows how the overall cost of a fan with a direct
drive Vari-Green motor is less than the cost to purchase a belt
drive and add a VFD to it.
Applications requiring constant pressure
control or variable volume as used in
multi-storied buildings such as hotels,
multi-family complexes, institutional
facilities, and high rise commercial buildings,
may utilize G fans with Vari-Green™ motor and
Vari-Green™ control.
Vari-Green™ Controls
The Vari-Green constant pressure control
is preprogrammed and easy to install for
applications that include—venting dryers,
bathrooms, residential type kitchen space or
industrial process exhaust.
Remote mounted dial — wall mounted dial allows
fan to be controlled at point of use and includes
a transducer.
Refer to the GreenVent Systems brochure for
more detailed information on benefits and
energy savings.
Two-speed control — provides the ability to
preset a high and low at the fan and control with a
timed position switch at the point of use.
Variable Volume vs. Constant Volume
Transformer — reduces 115V power to 24V power
$2,000-
Constant pressure — maintains negative pressure
(-1.0 wg to = 1.0 wg) for applications such as
bathrooms, dryers, filters, etc.
1,750-
Example
Cost/Savings
Comparisons
Example of
potential saving
based on a
northeast city in
the USA using a
GreenVent System.
1,5001,2501,000750500250$-
Variable Volume
Heating Cost ($/yr)
LEED information
Greenheck became one of the first
manufacturers in the Air Movement and
Control industry to join the LEED/green
movement when they joined the United States
Green Building Council (USGBC) in 2005.
Greenheck has been actively researching
qualification requirements for our products to
meet LEED credits and prerequisites.
The Vari-Green™ motor significantly
helps qualification efforts for the
Energy and Atmosphere credits and
prerequisites — specifically credit one,
Optimize Energy Performance and prerequisite
two, Minimum Energy Performance.
Constant Volume
Cooling Cost ($/yr)
Fan Operating Cost
Demand controlled systems reduce the energy
consumed by decreasing the speed of the fan and
energy used by the motor. The system controls
will lessen the amount of conditioned air that is
exhausted, further reducing the total operating costs.
A 0-10 VDC control signal is easily used in
conjunction with:
• BAS - Building Automation System
• GreenVent System Controls - for constant
pressure
• CO2 Sensors - Monitors carbon dioxide levels
• VOC Sensors - Monitors a range of volatile
organic compounds
• Motion Detectors - Monitors occupancy
For additional information refer to the Vari-Green
Motor brochure.
9
Options and Accessories
Roof Curbs
High Wind and Severe Duty Roof Curbs
Prefabricated roof curbs reduce installation time
and costs by ensuring compatibility between
the fan, the curb and roof opening. All curbs are
insulated with fiberglass. A wide variety of roof
curbs are available, including: flanged, pitched and
sound-absorbing.
Provided as an option with models G and GB. The
severe-duty roof curb models can ship separately
to allow for final finishing of the roof prior to the fan
arrival and installation.
Hinged Curb Cap with Cables (Field Installed)
Mounted to the curb cap, allows entire fan to tilt
away from curb for access to wheel and ductwork.
Includes restraint cables.
Hinged Base
(Factory Mounted)
Allows for easy
maintenance. Hinge and
restraining cables are
factory mounted to a
subbase attached directly
to curb without additional
height added.
Curb Seal
Rubber seal between fan and curb to assure proper
sealing when attached to a curb.
Curb Extensions
Extensions raise
the fan discharge
above the roofline
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.
10
Model GPF — This roof curb is used on fan models
G/GB and specifically designed for high wind
applications up to 75 psf. Curbs are minimum
18 gauge construction in a standard height of
12 inches (305 mm), with fully-welded straight sides
and a 5-inch flashing flange. GPF is available up to
24 inches (460 mm) in height to meet greater height
requirements.
Models SD and SDP — These severe-duty curbs
for fan models G and GB are specifically designed
for high wind applications up to 150 mph, maximum
design load of 130 psf. Model SD is for use on
flat roofs and model SDP for pitched roofs. They
are attached directly to the building structure with
extremely high structural design load requirements.
The severe duty curbs are 12 gauge coated steel
with a 13⁄4-inch lip on the top and a 4-inch flange on
the bottom. Available heights include 12–24 inches.
Heights greater than 18 inches are reinforced in the
interior with 12 gauge x 2-inch angles.
Mounting details for the roof curb to the roof
substrate and the fan to the curb are included with
each model G and GB installation manual.
For additional information refer to the Greenheck
High Wind brochure.
Tie-Down Points
Four brackets located on
the shroud for securing
the fan in high wind
applications. Cables and
anchors by others.
Options and Accessories
Speed Controllers for
Standard Motors
Available for use with shaded
pole and permanent split
capacitor (PSC) open motors
on model G fans. They provide
an economical means of system
balancing with direct drive fans.
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.
Dampers
Designed to prevent
outside air from entering
back into the building
when fan is off. Includes
gravity and motorized
dampers. Damper sizes
are shown on each
performance data page.
Birdscreen
Galvanized mesh is standard,
optional aluminum or stainless
steel rigid wire are also available.
Coatings
A wide variety of coatings and colors are available.
Greenheck coatings and resistance charts can be
found in the Performance Coatings Commercial
and Industrial Fans catalog and in our Product
Application Guide—Performance Coatings for
Ventilation Products.
Primer is applied at the factory to allow
for final finish in the field.
PRIMER
TM
PERMATECTOR
HI-PRO
POLYESTER
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.
G and GB models are Listed for electrical (UL/cUL 705)
File no. E40001
GB models for Emergency Smoke Control Systems
(UL/cUL Listed for 500˚F (260˚C) for 4 hours and
1,000˚F (538˚C) for 15 minutes) File no. MH17511
Note: UL/cUL is optional and must be specified.
11
Typical Installations
Models G and GB
General Clean Air (figure 1)
Factory Wired
from Motor to
Disconnect
Models G and GB exhaust fans are designed to
meet the needs of general clean air applications.
Tests were conducted to assure safe, rugged and
reliable fans.
Due to the varying types of airstreams encountered
in commercial ventilation, system designers must
be aware of national, state, and local codes and
guidelines governing these installations. Local code
authorities should be consulted before proceeding
with any ventilation project.
• When roofing materials extend to the top of the
curb, roof curbs should be 11⁄2 inches (3⁄4 inch on
each side) less than the unit curb cap to allow
for roofing and flashing.
figure 1
3/4 in.
Wiring by
Others
8 or 12 in.
(19 mm)
(203 or 305 mm)
Damper
11/4 in.
(32 mm)
• For recommended duct size, damper size, and
roof opening dimensions, refer to the
performance data pages. (starting on t. 14)
Recommended
Duct and
Damper Size
• Roofing materials can extend to the top of the
curb, roof curbs should be 1 inch (25 mm) total,
or 1⁄2 inch (13 mm) on each side, less than the unit
curb cap to allow for roofing and flashing.
Note: The typical installations shown are recommendations
based on national codes. Local authority may supersede these
recommendations.
11/4 in.
(32 mm)
Recommended
Roof Opening
• Installation must include a means for inspecting,
cleaning and servicing the exhaust fan.
High Wind, Hurricane and Seismic (figure 2)
Factory Wired
from Motor to
Disconnect
1/4 in. (6 mm)
Fastener
figure 2
1/2 in. (13 mm)
Wiring by
Others
4 in. (102 mm)
From Curb Edge
8 - 24 in.
(203 - 610 mm)
GPF or SD Curb
Damper
11/4 in. (32 mm)
Recommended
Duct and
Damper Size
11/4 in. (32 mm)
Recommended
Roof Opening
Wheel Rotation
Direction of rotation is very critical. Rotation in the wrong direction will result
in excessive horsepower, possible motor burnout, and increased noise levels.
Check rotation by energizing the unit only momentarily. The rotation should be
the same as the rotation decals affixed to the unit and is clockwise when viewed
Counterclockwise
from
the top of the unit.
Airflow
Clockwise
Airflow
12
Typical Installations
Models G and GB
Fan Inlet Connections
In order to assure proper fan performance, caution
must be exercised in fan placement and connection
to the ventilation system. Obstructions, transitions,
poorly designed elbows, improperly selected
dampers, etc., can cause reduced performance,
excessive noise, and increased mechanical stress.
For performance to be as published, the system
must provide uniform and stable airflow into the fan.
A
Provide uniform airflow at fan inlet to assure
optimum performance.
B
Provide uniform airflow at fan inlet and
through the damper to assure optimum
performance.
C
Dampers must open fully. Use motorized
dampers in low airflow applications to
reduce losses.
D
Avoid sharp turns or entrance conditions
which cause uneven flow. Use turning vanes
in elbows to reduce adverse effects.
Good
Good
A
B
Poor
Poor
D
C
Model Number Code
The model number code system is designed to completely identify the fan. The correct code letters
must be specified to designate belt or direct drive. The remainder of the model code is determined
by the size and performance.
GB - 240 HP - VG / 5 / A - X
VG
Configuration
G - Direct Drive
GB - Belt Drive
Fan Size
060 through 540
Wheel Pressure Level
HP - High Pressure
X = UL 705
F = UL 762
= Vari-Green™
(Direct Drive only)
Smoke Control Systems
Motor HP
(Belt Drive only)
6
4
3
5
7
=
=
=
=
=
=
=
=
=
1/6
1/4
1/3
1/2
3/4
10
15
20
30
1
11/2
2
3
50 = 5
75 = 71/2
100 = 10
150 = 15
Motor RPM
(Direct Drive only)
A = 1725
B = 1140
C = 860
D = 1550
E = 1050
G = 1300
International
(See CAPS for performance)
K = 950 RPM J = 1475 RPM
13
Roof Downblast - Exhaust
Direct Drive
G-060 • G-065
193⁄8
RPM (Direct)
Density 0.075 lb/ft3
Density 1.2 kg/m3
Static Pressure (Pa)
*121⁄8
(308)
3 (76)
13⁄4 (44)
17
Static Pressure (in. wg)
(492)
(432)
Damper Size = 8 x 8 (203 x 203)
Roof Opening = 101/2 x 101/2 (267 x 267)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 15 lbs. (7 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
G-1300-RPM
E-1050-RPM
0
0.05
0.1
Static Pressure in Inches wg
0.125
0.15
0.2
0.25
0.3
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
138
0.00
1.7
170
0.01
2.9
203
0.01
4.2
116
0.00
1.7
153
0.01
2.8
188
0.01
3.9
90
0.01
1.7
135
0.01
2.8
173
0.01
3.8
73
0.01
1.7
125
0.01
2.7
166
0.01
3.8
53
0.01
1.7
113
0.01
2.7
158
0.02
3.8
85
0.01
2.6
140
0.02
3.7
120
0.02
3.7
92
0.2
3.6
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
187
0.01
2.2
231
0.01
3.2
276
0.02
4.9
161
0.01
2.1
211
0.01
3.1
259
0.02
4.6
130
0.01
1.9
189
0.01
3.0
241
0.02
4.5
110
0.01
1.8
178
0.01
2.9
232
0.02
4.5
87
0.01
1.7
163
0.01
2.9
223
0.02
4.4
130
0.01
2.8
201
0.02
4.3
92
0.01
2.7
176
0.02
4.3
145
0.02
4.1
Fan
RPM
D-1550-RPM
0.375
0.4
060
E-1/200
1050
G-1/100
1300
D-1/60
1550
065
E-1/100
1050
G-1/60
1300
D-1/30
1550
96
0.02
4.0
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
14
Roof Downblast - Exhaust
Direct Drive
G-070 • G-075
193⁄8
RPM (Direct)
Density 0.075 lb/ft3
(492)
*121⁄8
(308)
3 (76)
13⁄4 (44)
Static Pressure (in. wg)
Static Pressure (Pa)
Density 1.2 kg/m3
17
(432)
Damper Size = 8 x 8 (203 x 203)
Roof Opening = 101/2 x 101/2 (267 x 267)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 15 lbs. (7 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
E-1050-RPM
G-1300-RPM
D-1550-RPM
0
0.05
0.1
Static Pressure in Inches wg
0.125
0.15
0.2
0.25
0.3
0.375
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
253
0.01
2.7
314
0.01
4.1
374
0.02
5.6
226
0.01
2.1
292
0.01
3.7
356
0.02
5.4
195
0.01
1.7
269
0.02
3.4
337
0.02
5.2
179
0.01
1.5
257
0.02
3.3
327
0.03
5.2
152
0.01
1.2
244
0.02
3.2
317
0.03
5.1
214
0.02
2.9
297
0.03
4.9
171
0.02
2.6
274
0.03
4.7
244
0.03
4.5
190
0.03
4.1
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
297
0.01
3.6
367
0.02
4.1
438
0.03
6.1
260
0.01
3.1
338
0.02
3.9
413
0.03
5.8
222
0.01
2.9
309
0.02
3.7
389
0.3
5.6
200
0.01
2.8
293
0.02
3.7
377
0.04
5.4
176
0.01
2.6
277
0.02
3.7
364
0.04
5.3
241
0.02
3.6
337
0.04
5.1
195
0.02
3.5
309
0.04
4.9
277
0.04
4.9
214
0.03
4.8
Fan
RPM
0.4
070
E-1/100
1050
G-1/60
1300
D-1/30
1550
075
E-1/80
1050
G-1/50
1300
D-1/25
1550
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
15
Roof Downblast - Exhaust
Direct Drive
G-080 • G-085
200
13⁄4 (44)
120
100
80
60
17
0.5
0.4
0.3
0.2
(432)
0.1
0
Damper Size = 10 x 10 (254 x 254)
Roof Opening = 121/2 x 121/2 (318 x 318)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 19 lbs. (9 kg)
0.0
0
VG
08
5-D
08
0-
D
08
5-G
08
0-
G
08
5-E
08
0-
DO
40
20
100
E
200
300
400
500
600
Volume (cfm)
0
100
200
300
400
500
600
700
800
900
1000
3
Volume ( m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Direct Motor
HP
Drive
0.6
-VG
0-
TO
T
4 (102)
140
Static Pressure (in. wg)
(371)
Static Pressure (Pa)
*145⁄8
0.7
RPM (Direct Drive)
RPM (Vari Green)
3
Density 0.075 lb/ft
Density 1.2 kg/m3
085
08
HE L
EFT
OF T
HIS S
YSTE
M
0.8
180
160
CURV
E
0.9
220
NO
TS
ELE
CT
213⁄4
(552)
E-1050-RPM
G-1300-RPM
D-1550-RPM
VG-1725-RPM
0
0.1
0.125
Static Pressure in Inches wg
0.15
0.2
0.25
0.3
0.375
0.5
0.625
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
335
0.01
3.8
415
0.02
5.4
495
0.04
7.3
551
0.05
9.1
268
0.02
3.7
361
0.03
5.4
450
0.04
7.3
511
0.06
9.1
249
0.02
3.6
348
0.03
5.4
439
0.04
7.3
501
0.06
9.1
230
0.02
3.7
333
0.03
5.4
427
0.05
7.3
490
0.06
9.1
189
0.02
3.9
303
0.03
5.4
404
0.05
7.3
469
0.06
9
134
0.02
4.2
272
0.03
5.5
379
0.05
7.2
449
0.07
8.9
239
0.03
5.6
354
0.05
7.3
426
0.07
8.9
174
0.03
5.9
314
0.06
7.3
392
0.07
8.9
237
0.06
7.6
332
0.08
9.1
260
0.08
9.4
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
398
0.01
4
493
0.02
5.5
588
0.04
7.6
654
0.05
9.5
326
0.02
3.9
436
0.03
5.3
541
0.04
7.4
612
0.06
9.4
307
0.02
3.9
420
0.03
5.3
528
0.05
7.4
602
0.06
9.4
286
0.02
3.9
405
0.03
5.3
515
0.05
7.4
590
0.06
9.3
240
0.02
4.1
375
0.03
5.3
490
0.05
7.4
567
0.07
9.3
179
0.02
4.3
340
0.04
5.3
464
0.05
7.4
544
0.07
9.3
302
0.04
5.4
439
0.06
7.4
521
0.07
9.3
233
0.04
5.5
394
0.06
7.4
486
0.08
9.3
308
0.06
7.6
419
0.08
9.4
168
0.06
8.1
340
0.09
9.4
Fan
RPM
080
VG1/4
E-1/40 1050
G-1/30 1300
D-1/20 1550
1725
085
VG1/4
E-1/40 1050
G-1/30 1300
D-1/20 1550
1725
VG - Vari-Green is a direct drive brushless DC motor.
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
16
Roof Downblast - Exhaust
Direct Drive
G-090 • G-095
213⁄4
13⁄4 (44)
17
0.4
50
0.2
0
0.0
RPM
RPM (Vari Green)
3
Density 0.075 lb/ft
Density 1.2 kg/m3
095-VG
090
-VG
095D
090
-D
095G
0-G
09
095
09 -E
0E
DO
(432)
100
0.6
THE L
E
4 (102)
150
NO
T SE
LECT
TO
(371)
0.8
Static Pressure (in. wg)
*145⁄8
Static Pressure (Pa)
200
FT OF
THIS S
YSTEM
CURVE
1.0
(552)
Damper Size = 10 x 10 (254 x 254)
Roof Opening = 121/2 x 121/2 (318 x 318)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 22 lbs. (10 kg)
200
400
600
800
1000
1200
Volume (cfm)
0
500
1000
1500
2000
3
Volume ( m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Direct Motor
HP
Drive
0
E-1050-RPM
G-1300-RPM
D-1550-RPM
VG-1725-RPM
0
0.1
0.125
Static Pressure in Inches wg
0.15
0.2
0.25
0.3
0.375
0.5
0.625
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
520
0.01
4
644
0.03
5.4
768
0.05
7.6
855
0.06
9.7
441
0.02
3.9
580
0.03
5.4
714
0.05
7.5
806
0.07
9.5
420
0.02
3.9
565
0.04
5.4
701
0.06
7.5
794
0.07
9.5
398
0.02
4
549
0.04
5.4
688
0.06
7.5
782
0.08
9.5
351
0.02
4.1
515
0.04
5.4
662
0.06
7.5
759
0.08
9.5
293
0.02
4.2
478
0.04
5.5
633
0.06
7.4
735
0.08
9.4
440
0.04
5.5
605
0.07
7.4
709
0.09
9.4
373
0.05
5.6
557
0.07
7.4
671
0.09
9.2
473
0.08
7.4
600
0.10
9.1
338
0.07
7.8
522
0.11
9.1
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
717
0.03
5.4
888
0.06
7.6
1059
0.10
9.6
1179
0.13
11.4
606
0.03
4.5
802
0.06
6.8
987
0.10
9.4
1114
0.14
11.4
570
0.04
4.5
780
0.06
6.7
969
0.10
9.3
1098
0.14
11.4
534
0.04
4.5
754
0.06
6.6
950
0.11
9.2
1081
0.14
11.5
468
0.04
4.4
695
0.07
6.5
912
0.11
9
1048
0.15
11.4
389
0.04
4.5
640
0.07
6.4
863
0.11
8.8
1013
0.15
11.2
290
0.03
4.6
586
0.07
6.4
814
0.11
8.7
969
0.15
11
493
0.07
6.4
745
0.12
8.7
903
0.16
10.9
184
0.05
6.8
623
0.12
8.7
800
0.16
11.3
474
0.11
8.7
688
0.16
11.3
Fan
RPM
090
VG1/4
E-1/40
1050
G-1/25
1300
D-1/15
1550
1725
095
VG1/4
E-1/30
1050
G-1/12
1300
D-1/8
1550
1725
VG - Vari-Green is a direct drive brushless DC motor.
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
17
Roof Downblast Exhaust
Belt & Direct Drive
GB-071 • G-097
243⁄8
RPM (Belt)
RPM (Direct)
(619)
43⁄8 (111)
13⁄4 (44)
Density 1.2 kg/m3
TS
EL
EC
TT
OT
HE
LEF
TO
F TH
IS S
YST
EM C
URV
E
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
RPM (Vari-Green)
HP
Density 0.075 lb/ft3
19
NO
(483)
DO
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/60 lbs. (24/27 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
071
Motor HP
Direct
Fan
RPM
097
CFM
720 BHP
VG1/4
790
1/6
or
1/8
VG -Vari-Green is a direct drive brushless DC motor.
C-1/8
860
930
1000
1070
B-1/6
1140
1285
1435
1580
A-1/4
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
157
0.01
1.8
172
0.01
2.3
187
0.02
2.8
203
0.02
3.3
218
0.03
3.9
233
0.03
4.6
248
0.04
5.3
280
0.06
6.8
313
0.08
8.0
344
0.10
9.5
376
0.13
11.3
107
0.01
2.0
128
0.01
2.3
148
0.02
2.7
166
0.02
3.4
184
0.03
4.0
202
0.03
4.7
220
0.04
5.4
255
0.06
6.7
292
0.08
8.0
324
0.10
9.5
356
0.13
11.2
B-1140-RPM
C-860-RPM
0.25
70
0.01
2.2
101
0.02
2.7
124
0.02
3.2
146
0.03
3.9
167
0.03
4.5
187
0.04
5.1
228
0.06
6.6
265
0.08
7.9
302
0.10
9.4
339
0.13
11.2
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
A-1725-RPM
0.875
VG-1725-RPM
1
1.125
MAXIMUM BHP AT A GIVEN RPM = (RPM/3371)3
MAXIMUM RPM - GB-071=1710, G-097=1725
TIP SPEED (ft/min) = RPM x 2.929
MAXIMUM MOTOR FRAME SIZE = 56
100
0.02
3.6
130
0.03
4.2
152
0.04
4.9
197
0.05
6.3
240
0.08
7.6
281
0.10
9.1
316
0.13
10.8
109
0.03
4.7
166
0.05
6.0
212
0.08
7.3
255
0.10
8.8
297
0.13
10.5
127
0.05
5.9
185
0.07
7.1
230
0.10
8.5
273
0.13
10.2
151
0.07
6.9
205
0.10
8.3
250
0.13
9.9
177
0.09
8.1
227
0.13
9.7
140
0.09
7.9
205
0.12
9.5
171
0.12
9.3
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
18
Roof Downblast Exhaust
Belt & Direct Drive
GB-081 • G-098
243⁄8
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft3
(619)
43⁄8 (111)
YST
EM
CUR
VE
SE
LE
CT
TO
13⁄4 (44)
TH
EL
EF
TO
FT
HIS
S
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
Density 1.2 kg/m3
19
(483)
DO
NO
T
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/60 lbs. (24/27 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
081
Motor HP
Direct
Fan
RPM
098
CFM
720 BHP
VG1/4
790
1/6
VG -Vari-Green is a direct drive brushless DC motor.
C-1/8
860
930
1000
1070
B-1/6
1140
1315
1490
1670
1/4
A-1/4
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
361
0.01
3.0
396
0.02
3.5
431
0.02
4.0
466
0.03
4.6
501
0.03
5.3
536
0.04
5.9
571
0.05
6.6
659
0.08
8.3
746
0.11
10.1
836
0.16
12.0
864
0.17
12.7
272
0.01
2.7
315
0.02
3.2
358
0.02
3.7
399
0.03
4.4
439
0.04
5.1
478
0.04
5.8
517
0.05
6.5
612
0.08
8.1
706
0.12
9.9
800
0.16
11.9
829
0.18
12.5
C-860-RPM
0.25
181
0.02
3
261
0.02
3.4
323
0.03
4.0
372
0.04
4.7
416
0.05
5.4
460
0.06
6.1
564
0.08
7.8
663
0.12
9.8
763
0.16
11.7
793
0.18
12.3
B-1140-RPM
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
A-1725-RPM
0.875
VG-1725-RPM
1
1.125
MAXIMUM BHP AT A GIVEN RPM = (RPM/2985)3
MAXIMUM RPM - GB-081=1710, G-098=1725
TIP SPEED (ft/min) = RPM x 2.929
MAXIMUM MOTOR FRAME SIZE = 56
259
0.04
4.4
338
0.05
5.0
396
0.06
5.7
513
0.09
7.4
621
0.12
9.3
725
0.17
11.4
756
0.18
12.1
283
0.05
5.5
456
0.09
7.0
574
0.12
8.9
686
0.17
11.0
719
0.19
11.7
362
0.08
6.9
525
0.12
8.6
645
0.17
10.7
679
0.19
11.4
452
0.12
8.5
603
0.17
10.4
640
0.19
11.1
353
0.11
8.4
550
0.18
10.1
592
0.19
10.8
466
0.17
10.0
527
0.19
10.6
377
0.16
9.9
441
0.18
10.5
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
19
Roof Downblast Exhaust
Belt & Direct Drive
GB-091 • G-099
243⁄8
(619)
13⁄4 (44)
SYS
TEM
CUR
VE
LEF
TO
FT
HIS
43⁄8 (111)
Density 1.2 kg/m3
TO
TH
E
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft3
SE
LE
CT
19
O
T
(483)
DO
N
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/61 lbs. (24/28 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
091
Motor HP
Direct
Fan
RPM
099
CFM
720 BHP
VG1/4
790
1/4
VG -Vari-Green is a direct drive brushless DC motor.
C-1/8
860
930
1000
1070
B-1/6
1140
1285
1435
1580
A-1/4
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
546
0.02
3.6
599
0.02
4.2
652
0.03
4.9
705
0.04
5.6
758
0.04
6.4
811
0.05
7.3
864
0.07
8.3
974
0.09
9.5
1087
0.13
10.7
1197
0.17
12.1
1307
0.23
13.6
403
0.02
3.5
471
0.02
4.1
536
0.03
4.7
598
0.04
5.5
659
0.05
6.2
718
0.06
7.1
777
0.07
8.1
897
0.10
9.4
1018
0.14
10.6
1135
0.18
12.0
1250
0.23
13.5
C-860-RPM
0.25
291
0.02
3.9
400
0.03
4.5
481
0.04
5.1
552
0.05
5.8
621
0.06
6.7
687
0.07
7.6
819
0.10
9.0
949
0.14
10.4
1072
0.19
11.9
1192
0.24
13.4
B-1140-RPM
A-1725-RPM
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
0.875
VG-1725-RPM
1
1.125
MAXIMUM BHP AT A GIVEN RPM = (RPM/2703)3
MAXIMUM RPM - GB-091=1710, G-099=1725
TIP SPEED (ft/min) = RPM x 2.929
MAXIMUM MOTOR FRAME SIZE = 56
414
0.05
5.6
512
0.06
6.3
590
0.07
7.1
736
0.10
8.5
877
0.14
10.0
1009
0.19
11.5
1135
0.24
13.2
457
0.07
6.8
647
0.11
8.2
801
0.15
9.6
941
0.19
11.2
1076
0.25
12.9
526
0.10
7.9
721
0.15
9.3
872
0.20
10.9
1013
0.25
12.6
615
0.15
9.0
799
0.20
10.6
949
0.26
12.3
404
0.12
8.4
707
0.20
10.3
883
0.26
12.0
583
0.19
9.8
806
0.26
11.8
707
0.25
11.5
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
20
Roof Downblast Exhaust
Belt & Direct Drive
GB-101 • G-103
243⁄8
(619)
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft3
URV
E
SYS
TEM
C
SE
LE
CT
19
50
13⁄4 (44)
13
43⁄8 (111)
TO
TH
EL
EFT
OF
THI
S
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
Density 1.2 kg/m3
O
T
(483)
DO
N
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/61 lbs. (24/28 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
101
Motor HP
Direct
Fan
RPM
103
CFM
720 BHP
1/4
VG -Vari-Green is a direct drive brushless DC motor.
VG1/4
C-1/8
860
1000
B-1/6
1140
1245
1350
1450
1555
1660
A-1/4
1725
1/3
1800
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
610
0.02
3.8
729
0.03
4.6
848
0.05
5.5
966
0.07
6.6
1055
0.10
7.5
1144
0.12
8.5
1229
0.15
9.3
1318
0.19
10.2
1407
0.23
11.4
1462
0.25
12.2
1525
0.29
13.3
477
0.02
2.7
623
0.04
3.7
753
0.05
4.8
883
0.08
6.0
978
0.10
7.0
1073
0.13
8.1
1162
0.16
9.0
1255
0.19
10.0
1348
0.23
11.1
1405
0.26
11.9
1471
0.30
12.8
C-860-RPM
0.25
473
0.04
2.9
654
0.06
4.4
805
0.09
5.7
908
0.11
6.7
1006
0.13
7.8
1099
0.16
8.7
1196
0.20
9.7
1292
0.24
10.7
1351
0.27
11.5
1419
0.30
12.5
B-1140-RPM
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
A-1725-RPM
0.875
VG-1725-RPM
1
1.25
MAXIMUM BHP AT A GIVEN RPM = (RPM/2593)3
MAXIMUM RPM = 1800
TIP SPEED (ft/min) = RPM x 2.913
MAXIMUM MOTOR FRAME SIZE = 56
481
0.05
3.4
702
0.09
5.2
824
0.11
6.3
938
0.14
7.7
1041
0.17
8.4
1140
0.21
9.4
1238
0.25
10.4
1298
0.28
11.2
1368
0.31
12.4
507
0.08
4.1
715
0.11
5.7
851
0.14
7.2
965
0.17
8.0
1079
0.22
8.9
1187
0.26
10.1
1250
0.29
10.9
1321
0.33
12.2
731
0.14
6.7
878
0.17
7.5
1005
0.22
8.4
1122
0.26
9.6
1193
0.29
10.3
1270
0.33
11.4
750
0.17
6.9
917
0.22
8.0
1050
0.26
9.1
1126
0.29
10.0
1209
0.33
10.9
791
0.21
7.5
963
0.26
8.7
1052
0.29
9.5
1142
0.33
10.6
841
0.25
8.1
955
0.29
9.0
1065
0.33
10.2
793
0.30
9.3
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
21
Roof Downblast Exhaust
Belt & Direct Drive
GB-101HP • G-103HP
243⁄8
(619)
RPM (Belt)
RPM (Direct)
43⁄8 (111)
13⁄4 (44)
19
Density 1.2 kg/m3
O
(483)
Density 0.075 lb/ft3
NO
TS
EL
EC
TT
OT
HE
LEF
TO
F TH
IS S
YSTE
M CU
RVE
(603)
Static Pressure (Pa)
*233⁄4
Static Pressure (in. wg)
RPM (Vari-Green)
HP
D
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 58/63 lbs. (26/29 kg)
Volume (cfm)
3
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
Motor HP
Direct
101HP
Fan
RPM
103HP
CFM
1300 BHP
1/4
1/3
VG -Vari-Green is a direct drive brushless DC motor.
VG1/2
1445
1590
A-1/4
1725
1880
2025
2137
2229
2336
1/2
2500
2550
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
Volume (m /hr )
A-1725 RPM
0
0.25
0.5
571
0.06
6.6
635
0.08
8.4
699
0.10
10.4
758
0.13
11.4
826
0.17
12.7
890
0.21
14.2
939
0.25
15.4
979
0.28
15.8
1026
0.33
16.4
1098
0.40
17.8
1120
0.43
18.2
477
0.06
5.7
553
0.09
7.5
626
0.11
9.5
692
0.14
10.7
767
0.18
12.2
836
0.23
13.6
889
0.26
14.8
931
0.30
15.4
981
0.34
16
1056
0.42
17.4
1078
0.44
17.9
342
0.07
5.3
449
0.09
7
537
0.12
9.1
613
0.15
10.6
697
0.19
11.9
772
0.24
13.3
830
0.28
14.4
875
0.31
14.8
928
0.36
15.4
1008
0.43
16.9
1032
0.46
17.4
VG-2550-RPM
Static Pressure in Inches wg
0.75
1
1.25
1.5
243
0.08
6.3
417
0.12
8.3
521
0.16
10.1
618
0.20
12
702
0.24
13.2
765
0.28
14.2
814
0.32
14.5
871
0.36
14.9
956
0.45
16.7
982
0.47
17.2
1.75
2
2.25
MAXIMUM BHP AT A GIVEN RPM = (RPM/3165)3
MAXIMUM RPM = 2550
TIP SPEED (ft/min) = RPM x 2.978
MAXIMUM MOTOR FRAME SIZE = 56
364
0.15
10
518
0.20
11.4
622
0.26
12.6
693
0.29
13.4
748
0.33
14.1
809
0.37
14.7
901
0.45
15.8
928
0.47
16.3
337
0.18
11.9
515
0.25
12
607
0.30
13.1
674
0.35
13.7
742
0.39
14
840
0.46
15.5
869
0.49
16.1
313
0.22
11.4
474
0.28
12.1
574
0.33
13.2
661
0.40
14.1
775
0.48
14.8
807
0.51
15.1
406
0.31
12.0
543
0.37
13.5
695
0.48
15.2
735
0.52
15.6
358
0.34
13.6
583
0.46
15.7
639
0.50
16.2
416
0.42
16.6
497
0.47
17.2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
22
Roof Downblast Exhaust
Belt & Direct Drive
GB-121 • G-123
243⁄8
(619)
RPM (Belt)
RPM (Direct)
43⁄8 (111)
CU
RV
E
TH
E
13⁄4 (44)
LE
FT
OF
TH
IS
SY
ST
EM
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
RPM (Vari-Green)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
19
TO
(483)
DO
T
NO
CT
LE
SE
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 58/66 lbs. (26/30 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
121
Motor HP
Direct
Fan
RPM
123
CFM
580 BHP
VG1/2
720
1/4
1/3
VG -Vari-Green is a direct drive brushless DC motor.
C-1/8
860
1000
B-1/6
1140
1265
1395
1475
1550
1635
1/2
A-1/2
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
704
0.02
3.2
873
0.03
4.2
1043
0.05
5.4
1213
0.08
6.7
1383
0.12
8.4
1535
0.16
10.2
1692
0.21
12.5
1789
0.25
13.5
1880
0.29
14.6
1983
0.34
15.9
2093
0.40
17.4
515
0.02
3.3
735
0.04
4.3
932
0.06
5.5
1119
0.09
6.8
1300
0.13
8.4
1460
0.17
10.1
1625
0.23
12.4
1726
0.27
13.4
1820
0.31
14.5
1926
0.36
15.8
2038
0.42
17.2
C-860-RPM
0.25
523
0.04
4.1
796
0.06
5.2
1013
0.09
6.7
1213
0.14
8.4
1384
0.18
10.1
1557
0.24
12.3
1661
0.28
13.3
1759
0.32
14.3
1868
0.37
15.6
1984
0.44
17.0
B-1140-RPM
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
A-1725-RPM
1
VG-1725-RPM
1.25
1.5
MAXIMUM BHP AT A GIVEN RPM = (RPM/2170)3
MAXIMUM RPM = 1725
TIP SPEED (ft/min) = RPM x 3.420
MAXIMUM MOTOR FRAME SIZE = 56
580
0.06
5.2
883
0.10
6.4
1112
0.14
8.1
1299
0.19
9.9
1484
0.25
12.2
1594
0.29
13.2
1696
0.33
14.2
1810
0.39
15.4
1928
0.45
16.8
694
0.09
6.4
993
0.14
7.9
1204
0.19
9.7
1404
0.26
12.0
1521
0.30
13.0
1629
0.34
14.0
1747
0.40
15.3
1871
0.46
16.7
831
0.14
7.8
1093
0.20
9.6
1315
0.26
11.7
1441
0.31
12.7
1555
0.35
13.8
1680
0.41
15.0
1810
0.47
16.4
950
0.19
9.4
1214
0.26
11.5
1356
0.31
12.4
1475
0.36
13.5
1608
0.42
14.8
1743
0.48
16.2
907
0.24
11.3
1132
0.31
12.0
1289
0.36
12.9
1446
0.43
13.9
1600
0.50
15.5
974
0.33
12.4
1231
0.41
13.4
1426
0.50
14.9
1180
0.47
14.0
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
23
Roof Downblast - Exhaust
Belt & Direct Drive
GB-131 • G-133
283⁄8
(721)
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
CU
RV
E
SY
ST
EM
TH
E
19
TH
IS
13⁄4 (44)
OF
4 (102)
(483)
DO
NO
T
EC
EL
TS
TO
Damper Size = 12 x 12 (305 x 305)
Roof Opening = 141/2 x 141/2 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 62/67 lbs. (28/30 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
131
Motor HP
Direct
Fan
RPM
133
CFM
580 BHP
VG3/4
720
1/4
1/3
VG -Vari-Green is a direct drive brushless DC motor.
C-1/8
860
1000
B-1/6
1140
1250
1315
1440
1600
1/2
1685
3/4
A-1/2
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
LE
FT
(603)
Static Pressure (in. wg)
*233⁄4
Static Pressure (Pa)
A
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
823
0.02
4.5
1022
0.04
5.4
1221
0.06
6.6
1419
0.10
8.1
1618
0.15
10.0
1774
0.19
12.0
1866
0.22
13.2
2044
0.29
15.0
2271
0.40
16.2
2391
0.47
16.9
2448
0.50
17.4
626
0.02
4.5
879
0.04
5.4
1106
0.07
6.5
1323
0.11
8.0
1535
0.16
9.8
1698
0.2
11.7
1794
0.23
12.8
1978
0.31
15.0
2212
0.42
16.0
2335
0.48
16.6
2393
0.52
17.0
C-860-RPM
0.25
650
0.04
5.2
962
0.07
6.3
1213
0.11
7.7
1444
0.16
9.6
1617
0.21
11.3
1718
0.24
12.5
1911
0.32
15.1
2152
0.43
15.8
2279
0.50
16.3
2338
0.53
16.7
B-1140-RPM
A-1725-RPM
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
1
VG-1725-RPM
1.25
1.5
MAXIMUM BHP AT A GIVEN RPM = (RPM/2047)3
MAXIMUM RPM - GB-131=1725, G-133=1725
TIP SPEED (ft/min) = RPM x 3.436
MAXIMUM MOTOR FRAME SIZE = 56
727
0.07
6.0
1075
0.12
7.4
1340
0.17
9.2
1528
0.22
11.0
1637
0.25
12.1
1838
0.33
15.1
2088
0.44
15.6
2219
0.51
16.0
2281
0.55
16.3
867
0.11
7.0
1211
0.17
8.8
1426
0.23
10.5
1545
0.26
11.7
1759
0.34
14.5
2023
0.45
15.3
2158
0.52
15.7
2220
0.56
15.9
1031
0.17
8.5
1133
0.22
9.7
1435
0.26
11.2
1674
0.34
13.9
1873
0.47
14.6
2020
0.54
15.1
2159
0.57
15.6
1305
0.26
10.9
1571
0.35
13.4
1783
0.47
14.2
1946
0.55
14.8
2089
0.58
15.4
1299
0.34
12.5
1686
0.48
13.9
1857
0.56
14.5
1935
0.59
14.9
1425
0.47
13.2
1654
0.56
13.9
1746
0.60
14.3
1312
0.52
13.5
1474
0.58
13.8
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
24
Roof Downblast - Exhaust
Belt & Direct Drive
GB-141 • G-143
283⁄8
(721)
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
13⁄4 (44)
22
SE
LE
CT
(559)
TO
4 (102)
Static Pressure (in. wg)
(603)
Static Pressure (Pa)
*233⁄4
TH
EL
EF
TO
FT
HIS
SY
STE
MC
URV
E
Density 0.075 lb/ft3
Density 1.2 kg/m3
DO
Damper Size = 16 x 16 (406 x 406)
Roof Opening = 181/2 x 181/2 (470 x 470)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 77/86 lbs. (35/39 kg)
141
Motor HP
Direct
Fan
RPM
143
CFM
580 BHP
1/4
1/3
1/2
VG -Vari-Green is a direct drive brushless DC motor.
VG3/4
720
C-1/8
860
950
1075
B-1/3
1140
1265
1360
1450
3/4
1550
1
A-1
1725
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
1076
0.04
4.7
1336
0.07
5.8
1595
0.12
7.1
1762
0.16
8.1
1994
0.24
10.0
2115
0.28
11.0
2347
0.39
12.9
2523
0.48
14.6
2690
0.58
16.2
2875
0.71
17.7
3200
0.98
20.0
855
0.04
4.7
1169
0.08
5.9
1457
0.13
7.0
1636
0.17
8.0
1882
0.25
9.9
2008
0.30
10.9
2250
0.40
12.7
2433
0.50
14.3
2606
0.60
15.9
2797
0.73
18.0
3129
1.00
21.0
T
Volume (cfm)
3
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
NO
B-1140-RPM
C-860-RPM
0.25
938
0.08
5.2
1304
0.13
6.6
1506
0.18
7.6
1771
0.26
9.4
1905
0.31
10.4
2158
0.41
12.3
2347
0.51
13.9
2524
0.61
15.6
2719
0.74
17.4
3059
1.02
20.0
Volume (m /hr )
Static Pressure in Inches wg
0.375
0.5
0.75
A-1725-RPM
1
1.25
VG-1550-RPM
1.5
1.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/1676)3
MAXIMUM RPM - GB-141=1725, G-143=1725
TIP SPEED (ft/min) = RPM x 3.829
MAXIMUM MOTOR FRAME SIZE = 145T
1085
0.13
6.1
1344
0.18
7.1
1647
0.26
8.9
1792
0.31
9.9
2062
0.42
11.9
2259
0.52
13.5
2443
0.63
15.2
2644
0.76
17.2
2991
1.03
19.9
1085
0.17
6.5
1490
0.26
8.4
1660
0.31
9.4
1955
0.42
11.4
2166
0.52
13.1
2358
0.63
14.7
2566
0.77
16.8
2923
1.05
19.6
1233
0.29
8.2
1677
0.42
10.4
1943
0.53
12.2
2165
0.64
13.8
2396
0.78
15.0
2782
1.07
18.5
1048
0.35
8.8
1602
0.51
11.0
1905
0.63
12.9
2191
0.79
14.8
2619
1.07
17.2
1501
0.59
11.7
1910
0.76
14.8
2427
1.09
17.0
1297
0.65
14.9
2184
1.06
16.8
1815
1.00
16.7
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
25
Roof Downblast - Exhaust
Belt Drive
Belt
Drive
Size-&: Direct
GB • H-GB
GB-141HP • G-143HP
283⁄8
(721)
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Static Pressure (in. wg)
Static Pressure (Pa)
*233⁄4
(603)
4 (102)
13⁄4 (44)
TO
TH
EL
EFT
OF
THI
SS
YST
EM
CUR
VE
Density 0.075 lb/ft3
Density 1.2 kg/m3
00
SE
LE
CT
22
22
T
(559)
DO
NO
Damper Size = 16 x 16
Roof Opening = 181/2 x 181/2 (470 x 470)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 75/83 lbs. (34/38 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Belt
Motor HP
Direct
141HP
Fan
RPM
.5
143HP
CFM
1020 BHP
1/4
VG3/4
B-1/4
1140
1/3
1/2
VG -Vari-Green is a direct drive brushless DC motor.
1320
1500
1655
A-1/2
1725
1812
1900
2050
3/4
2170
2200
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
488
0.08
6.3
645
0.11
7.7
837
0.17
10.3
1009
0.24
13.1
1151
0.32
15.0
1213
0.36
16.2
1289
0.41
17.8
1366
0.47
19.0
1495
0.58
21.0
1598
0.68
22.0
1623
0.71
23.0
.75
413
0.11
7.6
700
0.18
9.8
903
0.26
12.3
1064
0.34
14.1
1132
0.38
15.4
1213
0.43
17.2
1294
0.49
18.4
1430
0.61
20.0
1536
0.71
22.0
1562
0.74
22.0
B-1140-RPM
1
A-1725-RPM
Static Pressure in Inches wg
1.25
1.5
1.75
2
VG-2200-RPM
2.25
2.5
2.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/2351)3
MAXIMUM RPM - GB-141HP=2200, G-143HP=2200
TIP SPEED (ft/min) = RPM x 3.829
MAXIMUM MOTOR FRAME SIZE = 145T
486
0.17
9.9
774
0.26
12.2
959
0.35
13.3
1035
0.39
14.7
1127
0.45
16.6
1218
0.51
18.0
1361
0.63
19.8
1472
0.73
21.0
1500
0.76
22.0
592
0.25
12.4
833
0.35
13.1
932
0.39
14.2
1030
0.46
15.8
1127
0.53
17.4
1285
0.65
19.3
1407
0.76
21.0
1436
0.78
22.0
668
0.34
13.6
784
0.39
14.3
911
0.45
15.6
1033
0.53
16.8
1200
0.66
18.8
1328
0.77
21.0
1360
0.80
21.0
588
0.37
14.9
763
0.45
15.9
901
0.52
16.7
1113
0.66
18.6
1248
0.78
21.0
1281
0.82
21.0
545
0.41
16.6
753
0.51
17.0
991
0.66
18.3
1163
0.79
21.0
1200
0.82
21.0
857
0.65
18.3
1045
0.78
20.0
1088
0.81
21.0
672
0.61
18.6
919
0.77
19.7
968
0.80
20.0
757
0.74
19.8
834
0.79
20.0
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
26
Roof Downblast - Exhaust
Belt & Direct Drive
GB-161 • G-163
283⁄8
(619)
4 (102)
13⁄4 (44)
CU
RV
E
(603)
LE
FT
OF
TH
IS
SY
ST
EM
Static Pressure (Pa)
*233⁄4
Static Pressure (in. wg)
RPM (Belt)
RPM (Direct)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
TH
E
22
TO
(559)
C
LE
SE
T
DO
T
NO
Damper Size = 16 x 16
Roof Opening = 181/2 x 181/2 (470 x 470)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 101/88 lbs. (46/40 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor HP
Belt
Direct
161
Fan
RPM
163
CFM
580 BHP
1/4
720
C-1/4
1/3
860
945
1050
1/2
1100
B-1/2
1140
3/4
1250
1
1375
1-1/2
1575
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
0.25
1713
0.07
5.8
2127
0.14
7.8
2540
0.23
10.5
2791
0.31
12.6
3102
0.42
14.4
3249
0.48
15.3
3367
0.54
15.9
3692
0.71
17.9
4062
0.95
21.0
4652
1.42
26.0
1417
0.08
5.6
1893
0.15
7.5
2344
0.24
10.0
2612
0.32
12.0
2940
0.44
13.8
3095
0.50
14.7
3219
0.56
15.4
3557
0.73
17.4
3938
0.97
20.0
4545
1.45
25.0
970
0.07
5.3
1632
0.15
7.2
2145
0.25
9.6
2434
0.33
11.5
2782
0.45
13.2
2943
0.52
14.1
3072
0.57
14.9
3422
0.75
17.0
3815
0.99
19.6
4437
1.47
25.0
C-860-RPM
B-1140-RPM
Static Pressure in Inches wg
0.375
0.5
0.75
0.875
1243
0.14
6.8
1913
0.26
9.3
2236
0.34
11.2
2616
0.46
12.9
2787
0.53
13.8
2922
0.58
14.5
3289
0.76
16.6
3694
1.01
19.2
4330
1.49
24.0
A-1725-RPM
1
1.25
1.5
MAXIMUM BHP AT A GIVEN RPM = (RPM/1355)3
MAXIMUM RPM - GB-161=1575, G-163=1725
TIP SPEED (ft/min) = RPM x 4.352
MAXIMUM MOTOR FRAME SIZE = 145T
1596
0.24
8.7
2010
0.34
10.7
2429
0.47
12.6
2615
0.53
13.5
2761
0.59
14.2
3149
0.77
16.3
3571
1.02
18.9
4225
1.51
24.0
1937
0.44
11.6
2198
0.52
12.5
2382
0.59
13.3
2838
0.79
15.6
3304
1.04
18.4
4007
1.54
24.0
1582
0.41
10.7
1900
0.50
12.0
2125
0.57
12.9
2658
0.78
15.2
3161
1.05
18.0
3894
1.56
23.0
1808
0.54
12.1
2444
0.76
14.9
3007
1.04
17.6
3769
1.56
23.0
2609
1.01
17.2
3512
1.57
22.0
2073
0.93
15.4
3198
1.54
22.0
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
27
Exhaust
Roof Downblast - Belt
Drive
Belt Drive
Size: GB • H-GB
GB-161HP
283⁄8
RPM (Belt)
(721)
HP
Density 0.075 lb/ft3
4 (102)
13⁄4 (44)
Static Pressure (in. wg)
(603)
Static Pressure (Pa)
*233⁄4
SE
LE
CT
TO
THE
LEF
TO
F TH
IS S
YST
EM C
URV
E
Density 1.2 kg/m3
22
O
NO
T
(559)
D
Damper Size = 16 x 16 (406 x 406)
Roof Opening = 181/2 x 181/2 (470 x 470)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 88 lbs. (40 kg)
Volume (cfm)
3
Volume (m /hr)
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.625
0.75
Static Pressure in Inches wg
1
1.25
1.5
1.75
2
2.25
2.5
161HP
825
1/4
960
1095
1/3
1210
1270
1/2
1330
1390
1485
3/4
1580
1660
1
1740
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
702
0.11
6.5
1093
0.18
7.7
1380
0.26
9.0
1606
0.34
10.6
1718
0.39
11.4
1829
0.44
12.3
1938
0.50
13.3
2109
0.60
14.9
2275
0.72
16.7
2414
0.82
18.3
2551
0.94
20
919
0.17
7.6
1271
0.26
9.0
1514
0.35
10.3
1636
0.40
11.2
1753
0.45
12.1
1865
0.51
13.0
2041
0.61
14.7
2214
0.73
16.7
2357
0.84
18.8
2497
0.96
21
585
0.15
8.0
1139
0.26
8.9
1416
0.35
10.4
1545
0.40
11.1
1668
0.46
11.9
1789
0.52
12.8
1973
0.63
14.4
2150
0.75
16.4
2297
0.85
18.3
2442
0.97
21
MAXIMUM BHP AT A GIVEN RPM = (RPM/1708)3
MAXIMUM RPM = 1740
TIP SPEED (ft/min) = RPM x 4.352
MAXIMUM MOTOR FRAME SIZE = 145T
589
0.21
9.5
1149
0.34
10.3
1333
0.41
11.1
1483
0.47
12.1
1619
0.53
12.7
1822
0.64
13.8
2016
0.77
15.5
2175
0.89
16.7
2325
1.01
18.4
949
0.37
11.4
1204
0.45
12.0
1399
0.53
12.7
1654
0.65
13.7
1868
0.77
14.7
2037
0.89
16.2
2200
1.03
17.5
1032
0.48
13.1
1416
0.63
14.0
1704
0.791
14.8
1887
0.91
15.8
2066
1.03
17.2
1012
0.57
14.7
1447
0.75
15.4
1702
0.90
15.8
1917
1.05
16.8
1034
0.67
16.6
1441
0.86
17.1
1714
1.03
17.2
996
0.75
20
1452
0.98
19.2
987
0.85
28
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
28
Roof Downblast - Exhaust
Belt & Direct Drive
GB-180 • G-183
351⁄2
RPM (Belt)
RPM (Direct)
HP
(902)
Density 0.075 lb/ft3
13⁄4 (44)
EM
CU
RVE
SY
ST
TH
EL
EF
TO
FT
HIS
51⁄2 (140)
Static Pressure (in. wg)
*28
(711)
Static Pressure (Pa)
Density 1.2 kg/m3
30
LE
CT
TO
(762)
N
DO
Damper Size = 18 x 18 (457 x 457)
Roof Opening = 201/2 x 201/2 (521 x 521)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 108/142 lbs. (49/64 kg)
180
Fan
RPM
183
CFM
495 BHP
1/4
730
1/3
810
825
1/2
C-1/2
860
940
3/4
1055
B-1
1140
1
1185
1-1/2
1335
2
1460
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
0.25
1925
0.067
4.3
2839
0.21
7.4
3150
0.29
8.8
3208
0.31
9.1
3344
0.35
10.1
3655
0.46
12.7
4102
0.65
16.2
4433
0.81
17.9
4608
0.91
19
5191
1.31
22
5677
1.71
26
1646
0.078
4.7
2668
0.23
8.7
2997
0.31
9.9
3059
0.32
10.2
3202
0.36
10.8
3527
0.47
12.8
3990
0.67
15.7
4329
0.84
17.4
4508
0.94
18.4
5102
1.33
22
5596
1.74
25
1150
0.075
4.1
2469
0.25
7.2
2832
0.33
8.7
2899
0.35
9.0
3049
0.39
9.8
3388
0.49
12
3867
0.68
14.9
4216
0.85
16.8
4401
0.96
17.8
5010
1.36
21
5514
1.77
24
SE
Volume (cfm)
3
Volume (m /hr )
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor HP
Belt
Direct
OT
Direct Drive RPM
C-860-RPM
Static Pressure in Inches wg
0.5
0.75
1
1882
0.25
6.7
2375
0.35
8.2
2458
0.37
8.6
2647
0.42
9.1
3052
0.54
11.1
3596
0.74
14
3980
0.93
16
4179
1.03
17.1
4814
1.41
21
5336
1.81
24
1.25
B-1140-RPM
1.5
1.75
2
MAXIMUM BHP AT A GIVEN RPM = (RPM/1149)3
MAXIMUM RPM = 1460
TIP SPEED (ft/min) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
8.5
2015
0.4
8.1
2601
0.54
10.3
3252
0.77
12.9
3684
0.96
15.1
3900
1.07
16.2
4599
1.49
19.9
5155
1.93
23
2811
0.77
12.4
3328
0.98
14.3
3575
1.1
15.4
4344
1.54
19.2
4938
1.97
23
2856
0.95
13.6
3178
1.09
14.7
4052
1.57
18.7
4699
2.03
22
2499
0.99
13.7
3713
1.56
18.2
4426
2.05
22
3262
1.51
17.6
4123
2.05
22
3765
2.02
21
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
29
Roof Downblast - Exhaust
Belt Drive
GB-180HP
351⁄2
(902)
RPM (Belt)
HP
Density 0.075 lb/ft3
13⁄4 (44)
CU
RVE
SY
ST
EM
FT
HIS
EF
TO
51⁄2 (140)
TH
EL
*28
(711)
Static Pressure (in. wg)
Static Pressure (Pa)
Density 1.2 kg/m3
TO
30
LE
CT
(762)
DO
T
NO
SE
Damper Size = 18 x 18 (457 x 457)
Roof Opening = 201/2 x 201/2 (521 x 521)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 142 lbs. (64 kg)
Volume (cfm)
3
Volume (m /hr )
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.75
1
Static Pressure in Inches wg
1.25
1.5
1.75
2
2.25
2.5
2.75
180HP
795
1/4
845
1/3
935
1/2
1075
1150
3/4
1225
1
1350
1445
11⁄2
1540
1620
2
1700
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
1547
0.22
8.6
1759
0.26
9.1
2114
0.35
10.3
2601
0.51
12.9
2847
0.61
14.6
3088
0.73
16.3
3485
0.96
19.5
3782
1.16
22
4076
1.39
25
4319
1.60
27
4560
1.84
30
MAXIMUM BHP AT A GIVEN RPM = (RPM/1325)3
MAXIMUM RPM = 1700
TIP SPEED (ft/min) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
1686
0.35
9.6
2316
0.53
12.1
2607
0.64
13.1
2880
0.77
14.7
3296
1.00
17.6
3604
1.21
20
3909
1.44
22
4163
1.66
25
4414
1.90
27
1920
0.52
11.6
2298
0.65
12.6
2610
0.78
13.9
3095
1.04
16.4
3428
1.25
18.8
3744
1.49
21
4005
1.71
24
4263
1.96
26
1811
0.62
12.3
2277
0.78
13.3
2840
1.05
15.8
3213
1.28
17.8
3576
1.53
20
3848
1.76
23
4114
2.01
25
1711
0.72
13.2
2540
1.05
15.0
2969
1.29
17.3
3353
1.55
19.6
3663
1.79
22
3964
2.06
24
2059
0.99
15.1
2670
1.28
16.4
3119
1.56
18.9
3450
1.81
21
3764
2.08
23
2216
1.21
16.6
2827
1.55
18.1
3223
1.82
20
3560
2.10
22
2407
1.48
18.3
2923
1.80
19.7
3340
2.11
22
2512
1.72
19.8
3037
2.07
21
2642
1.99
21
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
30
Roof Downblast - Exhaust
Belt & Direct Drive
GB-200 • G-203
351⁄2
(902)
RPM (Belt)
RPM (Direct)
HP
13⁄4 (44)
CUR
VE
TH
EL
EF
TO
FT
HIS
SYS
TEM
51⁄2 (140)
Static Pressure (in. wg)
*28
(711)
Static Pressure (Pa)
Density 0.075 lb/ft3
Density 1.2 kg/m3
SE
LE
CT
TO
30
T
(762)
DO
NO
Damper Size = 18 x 18 (457 x 457)
Roof Opening = 201/2 x 201/2 (521 x 521)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 119/144 lbs. (54/65 kg)
Volume (cfm)
3
Volume (m /hr )
Direct Drive RPM
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor HP
Belt
Direct
200
Fan
RPM
203
440
1/4
600
1/3
665
718
1/2
770
3/4
C-3/4
1
860
965
1028
1-1/2
1090
B-2
1140
2
1200
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
0
0.125
2435
0.1
6.5
3320
0.25
8.5
3680
0.34
9.6
3973
0.43
10.8
4261
0.52
12.1
4759
0.73
14.1
5340
1.03
16.7
5689
1.25
18.5
6032
1.49
20
6308
1.7
22
6640
1.99
24
1976
0.1
5.8
2984
0.26
7.9
3378
0.34
9
3700
0.43
10
4013
0.53
11
4548
0.74
13.3
5158
1.04
16
5517
1.26
17.8
5870
1.5
19.6
6154
1.71
21
6494
2
23
0.25
2637
0.26
7.3
3085
0.35
8.5
3422
0.45
9.6
3744
0.55
10.7
4289
0.75
12.9
4927
1.05
15.4
5309
1.27
17.2
5682
1.51
18.9
5980
1.72
21
6336
2.01
23
C-860-RPM
Static Pressure in Inches wg
0.375
0.5
0.75
2089
0.25
6.1
2706
0.35
7.7
3109
0.45
9
3477
0.55
10.2
4068
0.77
12.4
4720
1.08
15
5101
1.29
16.8
5473
1.52
18.4
5779
1.74
20
6145
2.02
22
B-1140-RPM
1.0
1.25
1.5
1.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/938)3
MAXIMUM RPM = 1200
TIP SPEED (ft/min) = RPM x 5.596
MAXIMUM MOTOR FRAME SIZE = 184T
2087
0.33
6.7
2684
0.44
8.3
3141
0.55
9.8
3811
0.77
11.8
4520
1.09
14.5
4918
1.31
16.4
5301
1.56
18.1
5606
1.77
19.7
5969
2.04
22
3085
0.74
11.1
4015
1.08
13.7
4488
1.32
15.6
4925
1.56
17.5
5267
1.79
19.1
5651
2.09
21
3240
1.02
13
3911
1.28
14.7
4450
1.56
16.8
4832
1.79
18.5
5274
2.09
21
2941
1.14
14.6
3751
1.48
15.8
4287
1.75
17.5
4829
2.08
19.9
3439
1.61
16.5
4177
1.99
18.6
3077
1.69
16.7
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
31
Roof Downblast - Exhaust
Belt Drive
GB-220HP
351⁄2
(902)
RPM (Belt)
30
L EF
TO
F TH
IS S
YST
EM
C
13⁄4 (44)
TO
TH
E
51⁄2 (140)
Static Pressure (in. wg)
Static Pressure (Pa)
*28
(711)
URV
E
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
N
OT
SE
LE
CT
(762)
DO
Damper Size = 18 x 18 (457 x 457)
Roof Opening = 201/2 x 201/2 (521 x 521)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 166 lbs. (75 kg)
Volume (cfm)
3
Volume (m /hr)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.75
1
1.25
Static Pressure in Inches wg
1.5
2
2.5
2.75
3
3.25
200HP
740
1/2
895
958
3/4
1020
1
1125
1205
1 ⁄2
1
1285
1350
2
1415
1520
3
1625
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
1961
0.30
8.7
2809
0.52
11.4
3116
0.63
12.8
3409
0.75
14.1
3885
0.99
16.9
4229
1.19
18.8
4569
1.43
21
4843
1.65
23
5114
1.88
24
5550
2.31
27
5982
2.80
32
2331
0.53
10.9
2715
0.65
12.1
3050
0.77
13.6
3584
1.02
16.4
3967
1.24
17.9
4343
1.49
20
4638
1.71
22
4919
1.95
24
5368
2.38
27
5812
2.88
31
1424
0.45
10.3
2153
0.63
11.6
2602
0.78
13.1
3243
1.04
15.5
3663
1.27
17.2
4070
1.52
19.1
4384
1.75
21
4692
2.00
23
5182
2.45
27
5642
2.95
31
MAXIMUM BHP AT A GIVEN RPM = (RPM/1106)3
MAXIMUM RPM = 1625
TIP SPEED (ft/min) = RPM x 5.596
MAXIMUM MOTOR FRAME SIZE = 184T
1857
0.71
12.6
2804
1.04
15.3
3314
1.29
16.5
3770
1.55
18.1
4109
1.78
19.8
4442
2.04
22
4952
2.50
26
5448
3.02
29
2136
0.97
15.2
2884
1.27
16.4
3416
1.57
17.8
3811
1.81
19.3
4169
2.07
21
4713
2.53
24
5233
3.06
28
2278
1.40
18.9
2996
1.76
19.1
3492
2.07
19.7
4166
2.58
23
4767
3.13
27
2250
1.78
23
3458
2.53
22
4196
3.16
25
2850
2.38
22
3859
3.12
24
2046
2.06
22
3377
3.01
23
2725
2.76
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
32
Roof Downblast - Exhaust
Belt Drive
GB-220
423⁄4
(1086)
RPM (Belt)
HP
53⁄4 (146)
13⁄4 (44)
YS
TE
MC
UR
VE
(800)
TH
EL
EF
TO
FT
HIS
S
*311⁄2
Static Pressure (in. wg)
Static Pressure (Pa)
Density 0.075 lb/ft3
Density 1.2 kg/m3
TO
34
LE
CT
(864)
DO
NO
T
SE
Damper Size = 24 x 24 (610 x 610)
Roof Opening = 261/2 x 261/2 (673 x 673)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 164 lbs. (74 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
3230
0.14
7.4
3533
0.18
8.1
3799
0.23
8.8
4179
0.30
10.0
4863
0.48
13.0
5395
0.65
15.0
5737
0.79
15.7
6079
0.93
16.6
6444
1.11
17.8
6801
1.31
19.4
7485
1.74
23
2879
0.16
7.2
3219
0.20
7.8
3512
0.25
8.4
3924
0.32
9.6
4654
0.50
12.8
5206
0.68
14.9
5559
0.82
15.6
5911
0.97
16.4
6286
1.15
17.5
6651
1.34
19.1
7349
1.78
23
2296
0.16
6.9
2758
0.21
7.4
3132
0.26
7.9
3629
0.34
8.9
4403
0.53
12.1
4990
0.71
14.4
5362
0.84
15.2
5732
1.00
16.1
6122
1.18
17.2
6501
1.38
18.8
7212
1.82
23
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
1
1.25
1.5
220
425
1/4
465
500
1/3
550
1/2
640
3/4
710
755
1
800
848
11⁄2
895
2
985
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
1951
0.19
7.0
2542
0.26
7.5
3158
0.35
8.4
4120
0.54
11.2
4762
0.73
13.6
5148
0.87
14.6
5530
1.02
15.6
5932
1.21
16.9
6323
1.41
18.5
7062
1.86
22
MAXIMUM BHP AT A GIVEN RPM = (RPM/782)3
MAXIMUM RPM = 985
TIP SPEED (ft/min) = RPM x 6.283
MAXIMUM MOTOR FRAME SIZE = 184T
2526
0.33
8.0
3702
0.55
10.5
4459
0.74
12.8
4920
0.89
14.0
5326
1.05
15.2
5741
1.23
16.5
6142
1.44
18.2
6898
1.89
22
3208
0.54
9.7
4077
0.75
12.1
4579
0.90
13.4
5049
1.06
14.6
5540
1.26
16.2
5960
1.47
18.0
6734
1.92
22
3633
0.74
11.2
4206
0.90
12.7
4716
1.07
14.2
5236
1.27
15.7
5723
1.49
17.6
6568
1.95
22
3095
0.82
11.2
3929
1.05
12.5
4566
1.27
14.5
5122
1.50
16.9
6107
1.99
21
3542
1.17
13.4
4401
1.47
15.5
5548
2.00
20
4883
1.96
19.0
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
33
Roof Downblast - Exhaust
Belt Drive
GB-220HP
423⁄4
(1086)
YST
EM
CUR
VE
SE
LE
CT
TO
13⁄4 (44)
FT
HIS
S
53⁄4 (146)
TH
EL
EF
TO
(800)
Static Pressure (in. wg)
*311⁄2
Static Pressure (Pa)
RPM (Belt)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
34
T
(864)
DO
NO
Damper Size = 24 x 24 (610 x 610)
Roof Opening = 261/2 x 261/2 (673 x 673)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 186 lbs. (84 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.625
0.75
2952
0.47
8.9
3215
0.53
9.4
3614
0.65
10.6
3973
0.77
12.0
4532
1.00
15.0
4975
1.22
16.7
5400
1.46
18.7
5740
1.68
21
6076
1.93
23
6422
2.20
24
7100
2.82
28
2555
0.46
8.5
2871
0.53
9.2
3312
0.65
10.3
3719
0.79
11.5
4317
1.02
13.8
4791
1.25
16.0
5245
1.50
18.2
5591
1.72
20
5935
1.97
22
6289
2.24
24
6981
2.87
27
1892
0.42
8.3
2440
0.52
8.9
2974
0.65
9.9
3424
0.79
11.1
4083
1.04
13.5
4590
1.27
15.3
5060
1.53
17.5
5432
1.76
19.4
5794
2.01
21
6154
2.29
23
6858
2.92
27
1
Static Pressure in Inches wg
1.25
1.5
1.75
2
2.25
2.5
220HP
650
1/2
680
728
3/4
775
1
850
913
11⁄2
975
1025
2
1075
1127
3
1230
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
MAXIMUM BHP AT A GIVEN RPM = (RPM/838)3
MAXIMUM RPM = 1230
TIP SPEED (ft/min) = RPM x 6.414
MAXIMUM MOTOR FRAME SIZE = 184T
2643
0.75
10.5
3536
1.03
12.7
4119
1.29
14.4
4660
1.57
16.3
5075
1.81
18.2
5459
2.06
20
5852
2.36
22
6611
3.01
27
2648
0.95
12.0
3545
1.27
13.5
4185
1.56
15.4
4643
1.82
17.1
5082
2.10
18.7
5520
2.41
21
6316
3.08
25
2557
1.13
13.0
3602
1.53
14.8
4157
1.804
16.4
4649
2.10
18.3
5124
2.42
20
6009
3.14
25
3492
1.74
15.6
4136
2.07
17.7
4703
2.41
19.3
5649
3.15
23
3346
1.93
16.4
4173
2.37
18.6
5263
3.14
22
3299
2.17
17.7
4812
3.10
22
4265
3.02
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
34
Roof Downblast - Exhaust
Belt Drive
GB-240
423⁄4
(1086)
13⁄4 (44)
EFT
OF
THI
S SY
STE
MC
URV
E
53⁄4 (146)
TT
OT
HE
L
(800)
Static Pressure (in. wg)
*311⁄2
Static Pressure (Pa)
RPM (Belt)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
SE
LE
C
34
N
OT
(864)
DO
Damper Size = 24 x 24 (610 x 610)
Roof Opening = 261/2 x 261/2 (673 x 673)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 165 lbs. (75 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
3902
0.19
5.9
4223
0.24
6.7
4637
0.32
7.8
5371
0.50
10.3
5720
0.60
11.7
6060
0.71
13.1
6702
0.96
15.8
7143
1.16
17.7
7575
1.39
19.7
7988
1.63
22
8355
1.86
24
3422
0.21
5.9
3785
0.26
6.6
4242
0.35
7.5
5031
0.53
9.7
5400
0.64
11.0
5757
0.75
12.4
6428
1.01
15.0
6886
1.21
16.6
7332
1.44
18.6
7757
1.68
21
8135
1.92
23
2691
0.20
4.7
3188
0.27
5.7
3761
0.35
6.9
4666
0.54
9.1
5069
0.65
10.4
5449
0.78
11.8
6158
1.05
14.3
6632
1.26
15.9
7092
1.49
17.7
7529
1.73
19.6
7916
1.97
21
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
1
1.25
1.5
240
425
1/4
460
1/3
505
1/2
585
623
3/4
660
1
730
778
11⁄2
825
870
2
910
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
2036
0.22
4.2
3060
0.34
6.1
4195
0.55
8.8
4660
0.66
10.0
5094
0.79
11.3
5861
1.05
13.8
6363
1.27
15.4
6844
1.51
17.2
7300
1.77
19.1
7700
2.02
21
MAXIMUM BHP AT A GIVEN RPM = (RPM/715)3
MAXIMUM RPM = 910
TIP SPEED (ft/min) = RPM x 6.414
MAXIMUM MOTOR FRAME SIZE = 184T
3562
0.53
8.2
4131
0.65
9.6
4636
0.78
11.0
5507
1.06
13.4
6058
1.28
15.0
6574
1.52
16.8
7055
1.78
18.7
7467
2.03
21
2112
0.41
7.2
3428
0.61
9.1
4073
0.76
10.6
5077
1.06
13.1
5700
1.29
14.7
6261
1.54
16.4
6775
1.80
18.3
7215
2.05
20
3217
0.69
10.4
4568
1.03
12.9
5266
1.28
14.4
5901
1.53
16.2
6457
1.80
17.9
6933
2.06
19.6
4145
1.18
13.2
5002
1.48
14.8
5680
1.77
16.9
6240
2.05
19.2
7757
1.68
21
5388
1.97
16.7
3707
1.66
13.6
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
35
Roof Downblast - Exhaust
Belt Drive
GB-240HP
GB423⁄4
(1086)
RPM (Belt)
HP
53⁄4 (146)
13⁄4 (44)
CU
RVE
HIS
SY
ST
EM
TH
EL
EF
TO
FT
(800)
Static Pressure (Pa)
*311⁄2
Static Pressure (in. wg)
Density 0.075 lb/ft3
Density 1.2 kg/m3
EL
EC
T
TO
34
(864)
DO
NO
T
S
Damper Size = 24 x 24 (610 x 610)
Roof Opening = 261/2 x 261/2 (673 x 673)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 187 lbs. (85 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.625
3035
0.42
8.0
3475
0.53
9.4
3877
0.64
11.0
4247
0.76
12.7
4860
0.99
15.9
5310
1.20
18.5
5751
1.43
22
6114
1.65
24
6474
1.89
27
6853
2.16
29
7610
2.80
31
2586
0.41
7.6
3147
0.53
8.8
3603
0.65
10.3
4005
0.77
11.9
4654
1.02
15.2
5118
1.23
17.4
5574
1.47
19.9
5948
1.69
23
6315
1.92
26
6702
2.20
27
7471
2.84
30
0.75
1
Static Pressure in Inches wg
1.25
1.5
1.75
2
2.25
2.5
240HP
635
1/2
685
733
3/4
780
1
860
920
1 ⁄2
1
980
1030
2
1080
1133
3
1240
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
2693
0.51
8.4
3272
0.65
9.7
3740
0.78
11.3
4434
1.04
14.3
4925
1.25
16.6
5392
1.49
19.1
5776
1.72
21
6154
1.96
24
6550
2.24
26
7333
2.89
29
MAXIMUM BHP AT A GIVEN RPM = (RPM/845)3
MAXIMUM RPM = 1240
TIP SPEED (ft/min) = RPM x 6.414
MAXIMUM MOTOR FRAME SIZE = 184T
2964
0.75
10.3
3915
1.05
13.2
4496
1.29
15.0
5010
1.54
17.2
5428
1.77
19.6
5826
2.02
23
6237
2.31
24
7053
2.97
28
3105
0.99
12.2
3944
1.27
13.8
4562
1.55
15.6
5039
1.80
17.6
5468
2.06
20
5914
2.36
22
6767
3.04
27
3958
1.52
14.8
4560
1.80
16.3
5062
2.08
18.2
5560
2.40
21
6469
3.10
25
3896
1.73
15.7
4555
2.05
17.3
5133
2.39
19.3
6146
3.14
24
3763
1.93
16.7
4588
2.35
18.7
5775
3.14
23
5364
3.13
23
4776
3.04
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
36
Roof Downblast - Exhaust
Belt Drive
GB-260
50
(1270)
RPM (Belt)
HP
Density 0.075 lb/ft3
81⁄4 (210)
TS
EL
EC
TT
13⁄4 (44)
OT
HE
LEF
TO
F TH
IS S
YST
EM C
URV
E
*36
(914)
Static Pressure (in. wg)
Static Pressure (Pa)
Density 1.2 kg/m3
40
NO
(1016)
DO
Damper Size = 30 x 30 (762 x 762)
Roof Opening = 321/2 x 321/2 (826 x 826)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.051 (1.3)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 305 lbs. (138 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
3875
0.12
8.0
4714
0.22
9.2
5231
0.30
10.4
6005
0.45
11.4
6716
0.63
12.9
7491
0.88
14.4
8588
1.33
16.7
9041
1.55
17.8
9493
1.79
18.9
10138
2.18
21
10784
2.62
23
3121
0.14
7.1
4130
0.25
8.8
4716
0.33
10.3
5570
0.50
10.9
6324
0.68
12.1
7137
0.93
13.7
8278
1.39
16.2
8746
1.61
17.4
9212
1.86
18.6
9875
2.26
20
10537
2.70
23
1727
0.12
7.4
3393
0.26
8.6
4095
0.35
10.3
5063
0.52
10.4
5898
0.72
11.3
6775
0.98
13.0
7979
1.44
15.8
8460
1.67
17.0
8938
1.92
18.3
9617
2.33
20
10292
2.78
22
0.5
Static Pressure in Inches wg
0.75
1
1.25
1.5
1.75
2
260
300
1/4
365
1/3
405
1/2
465
3/4
520
1
580
11⁄2
665
700
2
735
785
3
835
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
MAXIMUM BHP AT A GIVEN RPM = (RPM/572)3
MAXIMUM RPM = 835
TIP SPEED (ft/min) = RPM x 7.985
MAXIMUM MOTOR FRAME SIZE = 184T
3745
0.53
9.6
4869
0.75
10.3
5912
1.04
12.2
7274
1.53
15.0
7811
1.77
16.2
8335
2.03
17.6
9069
2.44
19.7
9794
2.91
22
3008
0.64
9.4
4826
1.03
11.0
6474
1.57
14.2
7068
1.82
15.5
7649
2.10
16.8
8452
2.53
18.9
9225
3.02
21
5465
1.55
13.3
6227
1.83
14.8
6878
2.13
16.2
7769
2.58
18.2
8606
3.08
20
3608
1.29
12.8
4912
1.71
13.8
5916
2.09
15.6
7006
2.59
17.9
7932
3.12
19.9
4236
1.80
14.9
5949
2.49
17.1
7157
3.10
19.7
4189
2.11
16.7
6024
2.93
18.7
4294
2.49
18.6
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
37
Roof Downblast - Exhaust
Belt Drive
GB-300
50
(1270)
RPM (Belt)
HP
Density 0.075 lb/ft3
FT
HIS
SYS
TEM
TH
EL
EF
TO
13⁄4 (44)
SE
LE
CT
TO
Static Pressure (Pa)
81⁄4 (210)
Static Pressure (in. wg)
*36
(914)
CUR
VE
Density 1.2 kg/m3
40
T
(1016)
DO
NO
Damper Size = 30 x 30 (762 x 762)
Roof Opening = 321/2 x 321/2 (826 x 826)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.051 (1.3)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 320 lbs. (145 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
4859
0.18
9.3
5912
0.33
9.2
6803
0.50
9.6
7694
0.72
11.4
8585
1.00
13.4
9719
1.45
15.9
10772
1.97
18.8
11549
2.43
21
12311
2.94
23
13363
3.76
25
14416
4.73
28
3976
0.19
5.3
5222
0.35
6.2
6222
0.52
8.0
7197
0.75
10.6
8150
1.04
12.9
9334
1.49
15.4
10425
2.02
18.2
11226
2.48
20
12007
3.00
22
13084
3.82
25
14157
4.79
28
0.25
0.5
Static Pressure in Inches wg
0.75
1
1.25
1.5
1.75
2
300
300
1/3
365
1/2
420
3/4
475
1
530
11⁄2
600
2
665
713
3
760
825
5
890
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
4340
0.35
5.7
5537
0.53
7.0
6616
0.77
9.6
7640
1.06
12.2
8907
1.53
14.9
10060
2.06
17.7
10901
2.53
19.6
11704
3.05
21
12804
3.88
24
13898
4.85
28
MAXIMUM BHP AT A GIVEN RPM = (RPM/517)3
MAXIMUM RPM = 890
TIP SPEED (ft/min) = RPM x 7.985
MAXIMUM MOTOR FRAME SIZE = 184T
5095
0.74
8.1
6456
1.07
10.7
7952
1.55
13.8
9228
2.11
16.8
10129
2.59
18.9
10997
3.13
21
12175
3.97
24
13335
4.96
27
4195
0.91
9.4
6721
1.52
12.2
8269
2.11
15.7
9297
2.61
18.0
10242
3.16
19.8
11501
4.02
23
12716
5.03
26
7025
2.03
13.7
8283
2.57
16.4
9369
3.15
18.6
10770
4.05
22
12073
5.06
25
6691
2.38
13.7
8293
3.06
16.8
9909
4.01
20
11379
5.09
24
6437
2.76
14.0
8885
3.90
18.7
10536
5.02
22
7128
3.56
16.1
9568
4.89
21
7963
4.54
18.7
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
38
Roof Downblast - Exhaust
Belt Drive
GB-300HP
50
(1270)
RPM (Belt)
HP
Density 0.075 lb/ft3
Static Pressure (Pa)
81⁄4 (210)
13⁄4 (44)
TO
40
Static Pressure (in. wg)
*36
(914)
TH
EL
EF
TO
FT
HIS
SY
ST
EM
CU
RVE
Density 1.2 kg/m3
LE
CT
(1016)
N
DO
OT
SE
Damper Size = 30 x 30 (762 x 762)
Roof Opening = 321/2 x 321/2 (826 x 826)
Shroud Thickness = 0.064 (1.6)
Motor Cover Thickness = 0.051 (1.3)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 320 lbs. (145 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.75
1
1.25
Static Pressure in Inches wg
1.5
1.75
2
2.25
2.5
2.75
300HP
460
1/2
495
3/4
565
1
620
11⁄2
710
748
2
785
840
3
895
980
5
1065
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
2912
0.41
9.7
3602
0.53
10.3
4662
0.77
11.8
5398
1.01
13.4
6542
1.48
17.2
7013
1.71
18.8
7460
1.96
20
8107
2.37
23
8746
2.84
25
9722
3.68
32
10688
4.67
44
MAXIMUM BHP AT A GIVEN RPM = (RPM/613)3
MAXIMUM RPM = 1065
TIP SPEED (ft/min) = RPM x 7.985
MAXIMUM MOTOR FRAME SIZE = 184T
3600
0.76
10.4
4652
1.04
12.3
5954
1.53
16.0
6462
1.78
17.5
6943
2.04
19.1
7642
2.46
22
8328
2.95
24
9356
3.81
31
10351
4.81
42
3309
0.94
10.6
5269
1.55
15.3
5889
1.81
17.0
6402
2.08
18.5
7146
2.52
21
7870
3.03
23
8951
3.90
29
10006
4.94
37
4221
1.47
13.4
5027
1.78
15.7
5737
2.10
17.9
6636
2.57
21
7394
3.07
23
8531
3.99
28
9621
5.04
37
4800
2.00
16.2
5922
2.56
19.7
6892
3.11
23
8094
4.03
27
9233
5.12
36
4992
2.43
18.0
6150
3.08
22
7657
4.08
26
8831
5.17
35
5245
2.92
19.8
7029
4.09
25
8429
5.23
33
6264
3.95
24
7903
5.24
31
5222
3.69
23
7255
5.17
30
6543
5.01
29
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
39
Roof Downblast - Exhaust
Belt Drive
GB-330
583⁄4
(1492)
RPM (Belt)
HP
Density 0.075 lb/ft3
87⁄8 (225)
TO
13⁄4 (44)
CU
RVE
(978)
TH
EL
EF
TO
FT
HIS
SY
STE
M
*381⁄2
Static Pressure (in. wg)
Static Pressure (Pa)
Density 1.2 kg/m3
EL
EC
T
46
(1168)
DO
T
NO
S
Damper Size = 36 x 36 (914 x 914)
Roof Opening = 381/2 x 381/2 (978 x 978)
Shroud Thickness = 0.080 (2.0)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.080 (2.0)
^Approximate Unit Weight = 385 lbs. (175 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
6159
0.22
5.2
6643
0.28
5.9
7850
0.46
8.5
8937
0.68
10.2
10024
0.95
12.6
11232
1.34
15.1
12319
1.77
17.7
13285
2.22
19.6
14251
2.74
22
15580
3.57
24
16908
4.57
28
5043
0.25
4.9
5633
0.31
5.5
7029
0.50
8.3
8232
0.73
9.8
9401
1.01
11.9
10683
1.40
14.6
11824
1.84
17.2
12828
2.29
19.2
13825
2.82
21
15190
3.66
24
16549
4.66
27
3236
0.22
4.8
4308
0.31
5.2
6036
0.52
7.4
7410
0.76
9.2
8713
1.06
11.3
10087
1.46
14.0
11294
1.91
16.6
12340
2.37
18.7
13376
2.90
21
14786
3.75
24
16185
4.761
27
Static Pressure in Inches wg
0.375
0.5
0.75
1
1.25
1.5
1.75
330
255
1/3
275
1/2
325
3/4
370
1
415
11⁄2
465
2
510
550
3
590
645
5
700
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
MAXIMUM BHP AT A GIVEN RPM = (RPM/405)3
MAXIMUM RPM = 700
TIP SPEED (ft/min) = RPM x 9.425
MAXIMUM MOTOR FRAME SIZE = 215T
4757
0.50
7.1
6480
0.76
8.4
7927
1.07
10.6
9425
1.50
13.4
10719
1.96
16.1
11822
2.43
18.2
12908
2.98
20
14366
3.84
23
15798
4.86
27
5257
0.72
8.3
7050
1.07
10.0
8706
1.51
12.8
10085
1.98
15.6
11266
2.47
17.7
12408
3.03
19.8
13922
3.91
23
15408
4.95
27
6966
1.46
11.7
8696
1.99
14.4
10041
2.51
16.7
11307
3.09
18.8
12958
4.00
22
14564
5.08
26
6472
1.79
13.9
8616
2.46
15.7
10081
3.08
17.7
11912
4.04
21
13624
5.14
25
8536
2.95
17.1
10749
4.01
20
12640
5.17
24
9292
3.85
19.4
11538
5.12
23
10184
4.94
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
40
Roof Downblast - Exhaust
Belt Drive
GB-360
583⁄4
(1492)
RPM (Belt)
HP
Density 0.075 lb/ft3
13⁄4 (44)
SY
ST
EM
LE
FT
OF
TH
IS
87⁄8 (225)
TH
E
(978)
Static Pressure (in. wg)
Static Pressure (Pa)
*381⁄2
CU
RV
E
Density 1.2 kg/m3
EC
T
TO
46
(1168)
DO
NO
T
L
SE
Damper Size = 36 x 36 (914 x 914)
Roof Opening = 381/2 x 381/2 (978 x 978)
Shroud Thickness = 0.080 (2.0)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.080 (2.0)
^Approximate Unit Weight = 415 lbs. (188 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
8024
0.40
7.6
8693
0.51
8.7
9763
0.72
10.8
10966
1.02
13.7
12304
1.45
15.9
12919
1.67
17.0
13507
1.91
18.1
14524
2.38
20
15513
2.90
22
16931
3.77
26
18322
4.77
30
7070
0.43
6.6
7830
0.54
7.7
9024
0.76
10.0
10330
1.07
13.3
11737
1.50
15.6
12379
1.73
16.7
12991
1.97
17.8
14043
2.44
19.8
15064
2.96
22
16519
3.84
25
17941
4.85
30
5804
0.44
5.6
6756
0.56
6.8
8109
0.79
8.9
9558
1.11
11.9
11085
1.55
14.8
11776
1.78
16.1
12431
2.02
17.3
13551
2.5
19.4
14614
3.03
22
16107
3.91
25
17560
4.93
29
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
1
1.25
1.5
360
300
1/2
325
3/4
365
1
410
11⁄2
460
483
2
505
543
3
580
633
5
685
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
5001
0.51
5.6
7013
0.78
7.9
8686
1.12
10.9
10360
1.58
14.1
11109
1.82
15.5
11795
2.07
16.8
12959
2.55
18.9
14077
3.09
21
15654
3.98
24
17179
5.01
29
MAXIMUM BHP AT A GIVEN RPM = (RPM/394)3
MAXIMUM RPM = 685
TIP SPEED (ft/min) = RPM x 9.425
MAXIMUM MOTOR FRAME SIZE = 215T
7641
1.11
9.6
9568
1.59
13.1
10355
1.83
14.8
11096
2.09
16.5
12350
2.59
18.6
13523
3.14
21
15146
4.04
24
16711
5.07
28
8607
1.56
12.1
9517
1.83
13.7
10368
2.10
15.5
11679
2.60
17.8
12917
3.17
20
14639
4.10
23
16243
5.14
28
7096
1.46
10.9
8488
1.78
12.9
9473
2.07
14.7
10965
2.60
16.9
12289
3.18
19.1
14072
4.12
23
15774
5.20
26
8917
2.46
15.6
10813
3.13
17.6
12892
4.13
21
14710
5.23
24
11465
4.05
19.7
13535
5.21
23
12119
5.10
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
41
Roof Downblast - Exhaust
Belt Drive
GB-360HP
583⁄4
(1492)
87⁄8 (225)
TO
13⁄4 (44)
TH
EL
EF
TO
FT
HIS
S
(978)
Static Pressure (in. wg)
Static Pressure (Pa)
*381⁄2
YST
EM
CUR
VE
RPM (Belt)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
SE
LE
CT
46
T
(1168)
DO
NO
Damper Size = 36 x 36 (914 x 914)
Roof Opening = 381/2 x 381/2 (978 x 978)
Shroud Thickness = 0.080 (2.0)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.080 (2.0)
^Approximate Unit Weight = 460 lbs. (209 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0.5
0.75
1
1.25
Static Pressure in Inches wg
1.5
1.75
2
2.25
2.5
2.75
360HP
420
1
435
11⁄2
500
525
2
550
590
3
630
690
5
750
803
71⁄2
855
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
6097
0.91
10.4
6576
1.02
10.8
8432
1.56
13.4
9061
1.79
14.7
9681
2.05
16.0
10657
2.50
18.0
11616
3.01
20
13062
3.93
24
14487
5.02
27
15728
6.13
31
16918
7.37
35
MAXIMUM BHP AT A GIVEN RPM = (RPM/431)3
MAXIMUM RPM = 855
TIP SPEED (ft/min) = RPM x 9.425
MAXIMUM MOTOR FRAME SIZE = 215T
7000
1.53
12.5
7808
1.78
13.6
8589
2.06
14.8
9719
2.57
16.3
10772
3.11
18.6
12259
4.02
22
13711
5.10
25
14985
6.22
30
16236
7.47
33
5650
1.61
12.7
6998
1.98
14.2
8495
2.52
15.7
9767
3.10
17.6
11464
4.11
21
13002
5.22
24
14309
6.33
28
15568
7.58
33
6528
2.32
14.9
8525
3.04
16.9
10468
4.05
20
12220
5.26
24
13647
6.46
27
14946
7.71
31
6006
2.63
15.7
9335
3.99
19.2
11282
5.20
23
12863
6.44
26
14315
7.82
29
7159
3.60
18.1
10239
5.13
22
11960
6.37
25
13544
7.76
29
8513
4.83
21
10986
6.30
24
12676
7.69
27
9445
6.01
23
11761
7.61
27
10368
7.32
26
8273
6.63
25
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
42
Roof Downblast - Exhaust
Belt Drive
GB-420
651⁄4
(1657)
RPM (Belt)
HP
Density 0.075 lb/ft3
13⁄4 (44)
CU
RV
E
OF
TH
IS
SY
ST
EM
Static Pressure (Pa)
93⁄4 (248)
LE
FT
*44
(1118)
Static Pressure (in. wg)
Density 1.2 kg/m3
TH
E
52
O
(1321)
DO
NO
T
CT
LE
SE
T
Damper Size = 42 x 42 (1067 x 1067)
Roof Opening = 441/2 x 441/2 (1130 x 1130)
Shroud Thickness = 0.080 (2.0)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.100 (2.5)
^Approximate Unit Weight = 495 lbs. (225 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
8242
0.27
3.1
9890
0.46
4.6
11332
0.69
6.2
12568
0.95
8.0
14217
1.37
11.7
15659
1.83
14.4
17925
2.74
19.0
19574
3.57
22
21222
4.55
24
22994
5.79
27
24725
7.20
30
6454
0.29
2.9
8573
0.50
5.0
10219
0.75
6.8
11579
1.01
8.4
13357
1.45
11.3
14892
1.92
13.8
17264
2.86
18.4
18968
3.69
21
20663
4.68
24
22478
5.93
27
24245
7.35
30
0.25
Static Pressure in Inches wg
0.375
0.50
0.625
0.75
1.00
1.25
1.5
420
200
1/2
240
3/4
275
1
305
11⁄2
345
2
380
3
435
475
5
515
558
7 ⁄2
1
600
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
6365
0.48
4.9
8698
0.76
5.6
10320
1.03
7.5
12411
1.49
10.8
14043
1.97
13.3
16540
2.93
17.8
18320
3.78
20
20081
4.80
23
21957
6.07
26
23765
7.51
30
MAXIMUM BHP AT A GIVEN RPM = (RPM/302)3
MAXIMUM RPM = 600
TIP SPEED (ft/min) = RPM x 11.061
MAXIMUM MOTOR FRAME SIZE = 215T
8672
1.01
7.2
11102
1.50
10.1
12983
2.00
12.7
15792
2.97
17.3
17640
3.84
19.8
19459
4.87
22
21383
6.15
25
23243
7.61
29
9463
1.45
9.6
11787
2.00
12.3
14790
2.99
16.6
16887
3.88
19.3
18826
4.92
21
20805
6.22
24
22709
7.70
27
10108
1.91
12.0
13764
3.00
16.4
15929
3.90
18.6
18046
4.95
21
20219
6.28
24
22166
7.76
27
12502
2.95
16.5
14994
3.91
18.3
17162
4.98
20
19446
6.31
23
21621
7.81
26
12315
3.69
18.3
15254
4.92
19.4
17835
6.34
23
20104
7.87
26
12312
4.56
19.1
15908
6.21
22
18585
7.86
26
16590
7.64
26
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
43
Roof Downblast - Exhaust
Belt Drive
GB-480
GB733⁄4
(1873)
RPM (Belt)
HP
Density 0.075 lb/ft3
CU
RV
E
TH
E
13⁄4 (44)
LE
FT
OF
TH
IS
SY
ST
EM
111⁄4 (286)
Static Pressure (in. wg)
*471⁄4
(1200)
Static Pressure (Pa)
Density 1.2 kg/m3
TO
58
(1473)
C
LE
SE
T
DO
N
OT
Damper Size = 48 x 48 (1219 x 1219)
Roof Opening = 501/2 x 501/2 (1283 x 1283)
Shroud Thickness = 0.080 (2.0)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.100 (2.5)
^Approximate Unit Weight = 623 lbs. (283 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
0.25
12020
0.51
7.3
13522
0.73
8.3
15025
1.00
9.5
17129
1.48
11.8
18631
1.90
14.0
21636
2.98
17.6
23619
3.87
20
24942
4.56
22
25542
4.90
23
27345
6.01
27
29149
7.28
31
10059
0.55
6.6
11811
0.77
8.0
13516
1.05
9.5
15830
1.54
11.2
17437
1.97
13.0
20608
3.06
17.0
22678
3.66
19.9
24050
4.65
22
24672
4.99
23
26532
6.11
27
28386
7.39
31
6529
0.48
7.3
9500
0.76
7.6
11662
1.06
8.6
14379
1.58
10.7
16135
2.02
12.2
19548
3.13
16.4
21736
4.05
19.5
23158
4.75
22
23801
5.09
23
25719
6.22
27
27623
7.50
31
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
0.875
1
1.25
480
1/2
200
3/4
225
1
250
11⁄2
285
2
310
3
360
393
5
415
425
455
71⁄2
485
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
MAXIMUM BHP AT A GIVEN RPM = (RPM/245)3
MAXIMUM RPM = 485
TIP SPEED (ft/min) = RPM x 12.632
MAXIMUM MOTOR FRAME SIZE = 215T
8820
0.98
8.1
12517
1.56
10.0
14589
2.02
12.0
18385
3.17
15.9
20683
4.10
18.8
22189
4.81
21
22868
5.16
22
24886
6.31
26
26860
7.61
31
9587
1.42
9.1
12656
1.97
11.5
17010
3.17
15.5
19605
4.14
18.3
21181
4.85
21
21883
5.20
22
23966
6.36
26
26016
7.67
30
15420
3.21
15.0
18254
4.12
18.0
20012
4.86
20
20799
5.22
21
23046
6.41
25
25153
7.72
29
13507
3.00
14.2
16764
4.06
17.5
18733
4.84
20
19550
5.20
21
21953
6.41
25
24290
7.78
29
15086
3.94
16.7
17211
4.74
19.1
18156
5.13
20
20786
6.38
24
23201
7.75
28
15486
4.58
18.1
16604
5.00
19.3
19471
6.30
24
22106
7.73
28
15870
5.85
21
19517
7.49
26
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
44
Roof Downblast - Exhaust
Belt Drive
GB-500
83
(2108)
RPM (Belt)
HP
Density 0.075 lb/ft3
CU
RV
E
EM
TH
IS
SY
ST
OF
TH
E
13⁄4 (44)
LE
FT
141⁄2 (368)
Static Pressure (in. wg)
*503⁄4
(1289)
Static Pressure (Pa)
Density 1.2 kg/m3
T
O
64
(1626)
DO
NO
T
EC
EL
S
T
Damper Size = 54 x 54 (1371 x 1371)
Roof Opening = 561/2 x 561/2 (1435 x 1435)
Shroud Thickness = 0.100 (2.5)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.100 (2.5)
^Approximate Unit Weight = 687 lbs. (312 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
14102
0.50
6.7
16117
0.75
8.4
17245
0.92
9.5
19743
1.38
11.9
21677
1.83
14.0
24820
2.74
17.7
27157
3.59
19.9
29494
4.60
22
33764
6.90
27
35457
8.00
30
37068
9.14
32
11123
0.57
6.5
13588
0.85
8.0
14939
1.04
9.1
17749
1.54
11.5
19873
2.02
13.8
23263
3.00
17.4
25739
3.89
19.5
28188
4.92
22
32624
7.27
27
34371
8.38
29
36030
9.54
32
0.25
Static Pressure in Inches wg
0.375
0.5
0.625
0.75
0.875
1
1.25
500
175
1
200
214
11⁄2
245
2
269
3
308
337
5
366
71⁄2
419
440
10
460
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
10593
0.83
7.7
12242
1.04
8.7
15481
1.57
11.0
17857
2.06
13.2
21627
3.09
16.9
24253
4.01
19.1
26834
5.10
21
31467
7.57
27
33279
8.74
29
34991
9.94
32
MAXIMUM BHP AT A GIVEN RPM = (RPM/210)3
MAXIMUM RPM = 460
TIP SPEED (ft/min) = RPM x 14.137
MAXIMUM MOTOR FRAME SIZE = 256T
12983
1.53
10.7
15752
2.08
12.7
19752
3.11
16.2
22614
4.06
18.5
25429
5.20
21
30265
7.70
26
32134
8.87
29
33900
10.10
32
17903
3.11
15.8
20937
4.08
17.9
23831
5.20
20
29015
7.80
26
30989
9.01
29
32805
10.24
32
15284
2.96
15.6
19206
4.06
17.6
22310
5.24
19.8
27607
7.80
25
29679
9.03
28
31625
10.32
31
16671
3.88
17.4
20688
5.19
19.5
26276
7.84
24
28373
9.05
27
30342
10.32
30
18366
4.99
19.4
24940
7.88
24
27107
9.10
26
29127
10.36
29
23486
7.78
23
25801
9.09
26
27917
10.41
28
22407
8.73
25
25310
10.26
27
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
45
Roof Downblast - Exhaust
Belt Drive
GB-540
GB83
(2108)
RPM (Belt)
CU
RV
E
LE
FT
141⁄2 (368)
OF
TH
IS
SY
ST
EM
*503⁄4
(1289)
Static Pressure (in. wg)
Static Pressure (Pa)
HP
Density 0.075 lb/ft3
Density 1.2 kg/m3
TH
E
13⁄4 (44)
O
64
(1626)
DO
NO
T
EC
EL
TS
T
Damper Size = 54 x 54 (1371 x 1371)
Roof Opening = 561/2 x 561/2 (1435 x 1435)
Shroud Thickness = 0.100 (2.5)
Motor Cover Thickness = 0.064 (1.6)
Curb Cap Thickness = 0.100 (2.5)
^Approximate Unit Weight = 748 lbs. (339 kg)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
HP
Fan
RPM
0
0.125
15488
0.61
6.9
17258
0.85
7.8
18143
0.99
8.3
20798
1.49
10.1
22922
1.99
12.3
26197
2.97
16.2
31064
4.96
21
35578
7.45
27
39118
9.90
32
41950
12.21
36
44694
14.77
40
1250
0.65
6.3
14674
0.90
7.5
15724
1.04
8.2
18814
1.57
10.4
21228
2.09
12.1
24874
3.11
15.6
30005
5.13
21
34653
7.65
26
38277
10.12
32
41165
12.45
36
43957
15.02
40
0.25
Static Pressure in Inches wg
0.375
0.5
0.75
1
1.25
1.5
1.75
540
175
1
195
205
11⁄2
235
2
259
3
296
5
351
71⁄2
402
10
442
474
15
505
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
11068
0.87
7.2
12632
1.03
8.1
16229
1.56
10.5
18963
2.11
11.9
22870
3.14
15.3
28492
5.21
19.9
33552
7.80
26
37435
10.34
32
40381
12.68
37
43221
15.27
40
MAXIMUM BHP AT A GIVEN RPM = (RPM/202)3
MAXIMUM RPM = 505
TIP SPEED (ft/min) = RPM x 14.137
MAXIMUM MOTOR FRAME SIZE = 256T
12673
1.50
10.6
16439
2.08
11.6
20831
3.13
15.0
26810
5.24
19.3
32075
7.84
25
36109
10.39
32
39287
12.80
36
42332
15.45
40
18610
3.10
14.3
25115
5.23
18.7
30612
7.87
24
34766
10.44
32
38034
12.85
35
41157
15.51
39
21376
5.15
17.4
27519
7.82
23
32131
10.46
28
35558
12.90
33
38813
15.60
38
24274
7.73
21
29134
10.36
27
32927
12.84
31
36503
15.60
36
26111
10.24
26
30151
12.73
30
33869
15.48
35
26271
12.42
28
31293
15.36
32
26758
14.84
30
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical 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.
46
Specifications
Vari-Green™ Motor
Specification
Vari-Green™ Controls
Specification
Constant Pressure
Motor to be a DC electronic commutation
type motor (ECM) specifically designed for fan
applications. AC induction type motors are
not acceptable. Examples of unacceptable
motors are: Shaded Pole, Permanent Split
Capacitor (PSC), Split Phase, Capacitor Start
and 3 phase induction type motors. Motors shall
be permanently lubricated with heavy-duty ball
bearings to match the fan load and prewired to
the specific voltage and phase. Internal motor
circuitry shall convert AC power supplied to the
fan to DC power to operate the motor. Motor
shall be speed controllable down to 20% of full
speed (80% turndown). Speed shall be controlled
by either a potentiometer dial mounted on the
motor or by a 0-10 VDC signal. Motor shall be a
minimum of 85% efficient at all speeds.
Greenheck’s Constant Pressure system shall be
a complete package designed to regulate fan
speed based on demand while maintaining a
constant static pressure. System shall include
fan with Vari-Green™ Motor, Vari-Green Constant
Pressure control, transformer, and pressure tap.
Vari-Green Constant Pressure control shall have
the transducer integrated with a touch button
control panel. Control shall have a run mode and
a program mode preventing unwanted changes
when in run mode. Transformer shall be factory
supplied to provide power to the Vari-Green
Constant Pressure controller. System shall include
a self-sealing aluminum pressure tube with ¼-inch
connection. Fan shall be centrifugal direct drive
type in upblast, downblast, or inline configuration
with controllable EC Vari-Green motor.
Remote Dial
Remote Dial shall be a Vari-Green™ control
specifically designed to provide 0-10 volt DC
signal to Greenheck’s Vari-Green Motor.
2-Speed
2-Speed control shall be a Vari-Green™ Control
specifically designed to allow the Vari-Green
Motor to operate at two distinct speeds. 2-Speed
control shall include two dials that may be set
at any point between 0 and 10 volts DC and an
integral transformer capable of reducing 115/230
volt AC power to 24 volt AC power.
47
Direct Drive Specifications
Model G
For models G-060 through G-095, fan shall have
sleeve bearing motors, carefully matched to the
fan load, and furnished at specified voltage, phase
and enclosure. For models G-097 through G-203,
motors shall be heavy-duty ball bearing type,
carefully matched to the fan load, and furnished at
the specified voltage, phase and enclosure. Models
G-060 through G-095 have three-speed motors as
standard. Motors shall be mounted on true vibration
isolators, out of the airstream. Fresh air for motor
cooling shall be drawn into the motor compartment
from an area free of discharge contaminants. Motors
shall be readily accessible for maintenance. True
vibration isolators shall be double-studded with no
metal-to-metal contact. Each vibration isolator shall
be sized to match the weight of each fan.
Spun aluminum downblast exhaust fans shall
be direct drive type. These fans are specifically
designed for roof mounted applications exhausting
relatively clean air. Performance capabilities range
up to 6,640 cfm (11,281 m3/hr) and 1 in. wg (249 Pa) of
static pressure. The maximum continuous operating
temperature shall be 180°F (82°C). Model G fans are
available in 20 sizes with nominal wheel diameters
ranging from 7 to 20 inches (178 to 457 mm) (060-203
unit sizes).
Each fan shall bear a permanently affixed
manufacturer’s engraved metal nameplate
containing the model number and individual
serial number.
All fans shall bear the AMCA Sound and Air
Performance seal.
The fan wheel shall be centrifugal non-overloading
backward-inclined, constructed of aluminum and
shall include a wheel cone carefully matched to the
inlet cone for precise running tolerances. Wheels
shall be statically and dynamically balanced in
accordance to AMCA Standard 204-05.
48
The fan housing shall consist of the motor cover,
shroud, curb cap and lower windband, and shall
be constructed of heavy-gauge aluminum. Housing
shall have a rigid internal support structure and
leakproof design. The fan shroud shall be one piece
with a rolled bead for extra strength which directs
exhaust air downward. The lower windband shall be
one piece with formed edges for added strength and
the curb cap shall include prepunched mounting
holes to ensure correct attachment.
A disconnect switch is a positive electrical shutoff
and shall be wired from the fan motor to a junction
box installed within the motor compartment. Factory
standard shall be a NEMA-1 disconnect switch
with other NEMA rated options also available.
Disconnect switches shall be factory mounted and/
or shipped loose for field mounting.
Options and accessories shall include: curb
extension, curb seal, dampers, finishes, hinge kit,
hinge base, pressure probe, roof curbs, and tie-down
points.
Fans shall be model G as manufactured by Greenheck
Fan Corporation of Schofield, Wisconsin, USA.
Direct Drive, Severe Duty
Specifications
Model G
Seismic Specifications
Fans shall meet International Building Code (IBC)
2006, 2009 and the California Office of Statewide
Health Planning and Development (OSHPD)
requirements for seismic certifications as listed.
• All Greenheck seismically certified models shall
be tested to the most severe seismic event on
the Spectral Response Map per IBC Figures
1613.5 (1-2). Testing shall be performed under
the worst case scenario, using the highest
mapped seismic load, highest level occupancy
category, worst case site class, and highest code
mandated importance factor.
• Fans shall be shake table tested in accordance
with ICC ES AC-156, in which the fans are
physically subjected to the same or greater
forces as experienced during a seismic event.
High Wind Specifications
Fans shall meet all Greenheck wind load
standards and shall contain the following
third-party certifications:
• Miami-Dade NOA# 09-0624.09
• Licensed P.E. calculations shall be available for
fan per ASCE 7-02 Minimum Design Loads for
Buildings and Other Structures for exposure
Class C, 60 foot building height, and a type II
building.
• Fan shall be tested in accordance with ASTM
E-330-02 Structural Performance of Exterior
Windows, Doors, Skylights, and Curtain Walls by
Uniform Static Air Pressure Difference and Florida
Building Code Test Protocol TAS-201, 202 and
203 at the ASCE 7-02 calculated design load.
• For applications which are not covered by
California OSHPD standards, Greenheck seismic
models G shall be certified by a third party
engineering firm to IBC 2006, 2009 and ASCE
7-05 standards.
• Greenheck seismic model G has been certified
to IBC 2006, 2009, ASCE 7-05 and California
OSHPD standards through engineering
calculations and shake table testing of all models
by independent third party engineering firms.
Fans shall be Greenheck model G, as specified on
page 48, with seismic rated construction option and
manufactured by Greenheck Fan Corporation in
Schofield, Wisconsin, USA.
• Licensed P.E. calculations for attachment of
fan to curb shall be available for ASCE 7-02
determined design pressure.
• All calculations and testing shall be done by a
state licensed P.E., and a certified test lab.
Fans shall be Greenheck model G, as specified
on page 48, with high wind-resistant construction
option and manufactured by Greenheck Fan
Corporation in Schofield, Wisconsin, USA.
49
Belt Drive Specifications
Model GB
contaminants. Motors shall be readily accessible
for maintenance. True vibration isolators shall be
double-studded or pedestal mount with no metal-tometal contact. Each vibration isolator shall be sized
to match the weight of each fan.
Fan shafts shall be precision ground and polished
solid steel with an anti-corrosive coating. Fan
shafts shall be mounted in permanently sealed,
lubricated pillow block ball bearings. The first critical
speed on a fan shaft shall be at least 25 percent
over maximum operating speed. Bearings shall be
selected for a minimum L10 life in excess of 100,000
hours (L 50 life of 500,000 hours) at maximum
cataloged operating speed. All bearings are 100
percent factory tested.
Spun aluminum downblast exhaust fans shall be
belt drive type. These fans are specifically designed
for roof mounted applications exhausting relatively
clean air. Performance capabilities range up to
44,700 cfm (75,946 m3/hr) and 2.5 in. wg (623 Pa)
of static pressure. The maximum continuous
operating temperature shall be 180°F (82°C).
Model GB fans are available in twenty sizes with
nominal wheel diameters ranging from 11 to
54 inches (279 to 1372 mm) (071-540 unit sizes).
Each fan shall bear a permanently affixed
manufacturer’s engraved metal nameplate containing
the model number and individual serial number.
All fans shall bear the AMCA Sound and Air
Performance seal.
The fan wheel shall be centrifugal non-overloading
backward-inclined, constructed of aluminum and
shall include a wheel cone carefully matched to the
inlet cone for precise running tolerances. Wheels
shall be statically and dynamically balanced in
accordance to AMCA Standard 204-05.
Motors shall be heavy-duty ball bearing type,
carefully matched to the fan load and furnished at
the specified voltage, phase and enclosure. Drives
shall be sized for a minimum of 150% of driven
horsepower. Motors and drives shall be mounted
on true vibration isolators, out of the airstream.
Fresh air for motor cooling shall be drawn into the
motor compartment from an area free of discharge
50
The fan housing shall consist of the motor cover,
shroud, curb cap and lower windband, and shall be
constructed of heavy-gauge aluminum. Housing shall
have a rigid internal support structure and leakproof
design. The fan shroud shall be one piece with a
rolled bead for extra strength which directs exhaust
air downward. The lower windband shall be one
piece with formed edges for added strength and the
curb cap shall include prepunched mounting holes to
ensure correct attachment.
Drive frame assemblies shall be constructed of
heavy-gauge steel and mounted on true vibration
isolators. Pulleys shall be of the fully machined cast
iron-type, keyed and securely attached to the wheel
and motor shafts. Motor pulleys shall be adjustable
for final system balancing.
A disconnect switch is a positive electrical shutoff
and shall be wired from the fan motor to a junction
box installed within the motor compartment. Factory
standard shall be a NEMA-1 disconnect switch
with other NEMA rated options also available.
Disconnect switches shall be factory mounted and/
or shipped loose for field mounting.
Options and accessories shall include: auto belt
tensioner, curb extension, curb seal, dampers,
coatings, hinge kit, hinge base, pressure probe, roof
curbs, and tie-down points.
Fans shall be model GB as manufactured by
Greenheck Fan Corporation of Schofield,
Wisconsin, USA.
Belt Drive, Severe Duty
Specifications
Model GB
Seismic Specifications
Fans shall meet International Building Code (IBC)
2006, 2009 and the California Office of Statewide
Health Planning and Development (OSHPD)
requirements for seismic certifications as listed.
• All Greenheck seismically certified models shall
be tested to the most severe seismic event on
the Spectral Response Map per IBC Figures
1613.5 (1-2). Testing shall be performed under the
worst case scenario, using the highest mapped
seismic load, highest level occupancy category,
worst case site class, and highest code mandated
importance factor.
• Fans shall be shake table tested in accordance
with ICC ES AC-156, in which the fans are
physically subjected to the same or greater forces
as experienced during a seismic event.
High Wind Specifications
Fans shall meet all Greenheck wind load
standards and shall contain the following
third-party certifications:
• Miami-Dade NOA# 09-0624.09
• Licensed P.E. calculations shall be available for
fan per ASCE 7-02 Minimum Design Loads for
Buildings and Other Structures for exposure Class
C, 60 foot building height, and a type II building.
• Fan shall be tested in accordance with ASTM
E-330-02 Structural Performance of Exterior
Windows, Doors, Skylights and Curtain Walls by
Uniform Static Air Pressure Difference and Florida
Building Code Test Protocol TAS-201, 202 and 203
at the ASCE 7-02 calculated design pressure.
• Licensed P.E. calculations for attachment of fan to
curb shall be available for ASCE 7-02 determined
design pressure.
• All calculations and testing shall be done by a
state licensed P.E., and a certified test lab.
Fans shall be Greenheck model GB, as specified
on page 50, with high wind-resistant construction
option and manufactured by Greenheck Fan
Corporation in Schofield, Wisconsin.
• For applications which are not covered by
California OSHPD standards, Greenheck seismic
model GB shall be certified by a third party
engineering firm to IBC 2006, 2009 and ASCE
7-05 standards.
• Greenheck seismic model GB has been certified to
IBC 2006, 2009, ASCE 7-05 and California OSHPD
standards through engineering calculations and
shake table testing of all models by independent
third party engineering firms.
Fans shall be Greenheck model GB, as specified
on page 50, with seismic rated construction option
and manufactured by Greenheck Fan Corporation in
Schofield, Wisconsin, USA.
Smoke Control Specifications
• Fans wheel shall be centrifugal backward-inclined,
constructed of steel and shall include a wheel
cone carefully matched to the inlet cone for
precise running tolerances.
• Dual drives shall be sized for a minimum of 150%
of driven horsepower.
• A NEMA-3R disconnect switch shall be factory
installed and wired from the fan motor to
a junction box installed outside the motor
compartment.
• Fans shall be Listed by Underwriters Laboratory
for UL/cUL 705 for electrical components and
UL/cUL Listed for Emergency Smoke Control
Systems [500°F (260°C) for 4 hours and 1,000°F
(538°C) for 15 minutes].
Fans shall be Greenheck model GB, as specified
on page 50, with smoke control rated construction
option and manufactured by Greenheck Fan
Corporation in Schofield, Wisconsin, USA.
51
Quick Delivery and Quick Build Programs
Greenheck’s Quick Delivery Program provides many options to
help you meet your project’s schedule. Stocking warehouses
and distribution centers around the world ensure same-day
pickup and same-day shipment for orders in by 2 p.m. (CST).
Hundreds of custom products can be manufactured through our
Quick Build program in just days.
Please refer to chart shown for model size and availability for
QD and QB programs. The Greenheck Stock & Quick Build Catalog is a great
resource for specific options and accessories available with QD and QB fans.
Anywhere. Anytime.
Regional warehouses are nearby
and fully stocked.
U.S.
California
Florida
North Carolina
Texas
Wisconsin
Worldwide
Mexico
Manufacturing locations
California
Kentucky
North Carolina
Wisconsin
China
Mexico
1 HOUR
local stock
customer
pick up
QD STOCK
Quick Delivery & Quick Build
Model Size Availability
Size
Model G
Number
060-095
097
099-103
103HP
123
133
143
143HP
163
183
203
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
QD-1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
1-3-5-10
SAME-DAY
OR NEXT DAY
SHIPMENTS
1-DAY
CUSTOM-BUILT
PRODUCTS
SHIPPED IN
ONE DAY
3-5-10-DAYS
CUSTOM-BUILT
PRODUCTS
SHIPPED IN 3, 5
OR 10 DAYS
STANDARD LEAD TIME
ALL GREENHECK PRODUCTS ARE
SHIPPED AS FAST AS POSSIBLE
FROM ONE OF OUR FOUR U.S.
MANUFACTURING PLANTS.
Size
Model GB
Number
071-091
101
101HP
121
131
141
141HP
161
161HP
180
180HP
200
200HP
220
220HP
240
240HP
260
300
300HP
330
360
360HP
420
480
500
540
QD-1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
QD-1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
1-3-5-10
QD-1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
1-3-5-10
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment 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
Prepared to Support
Green Building Efforts
specifications without notice.
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
00.F&V.1000 R7 6-2011 SP
Copyright © 2011 Greenheck Fan Corp.