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Picture of Centrifugal Downblast Exhaust Fan, Model GB-240, Belt Drive, 1 1/2HP, 208-230/460V, 3Ph, Motor & Drives Unassembled, 4084-7804 CFM

Manufacturer: Greenheck

Centrifugal Downblast Exhaust Fan, Model GB-240, Belt Drive, 1 1/2HP, 208-230/460V, 3Ph, Motor & Drives Unassembled, 4084-7804 CFM

$3,135.00

34 x 34 inch base with prepunched mounting holes for easy attachment to roof curb
Variable pitch adjustable motor pulley to optimize fan performance
30.5 x 30.5 inch recommended roof opening

SKU: GB-240-15134X3QD-DR2

Ships From: Greenheck

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Available In: 5-7 Business Days

Product Specifications
Performance
Dimensional Drawing
Literature
Certifications

Motor HP	Max BHP	Max Fan RPM	Min Fan RPM	Ps (in. wg)	0	0.125	0.25	0.375	0.5	0.625	0.75	0.875	1	1.25
1 1/2	1.68	850	680	CFM	7804	7568	7335	7098	6844	6553	6216	5820	5381	4084
Sones	21	19.8	18.9	18.6	18.1	17.5	17.3	17.2	16.2	13.3
Bhp	1.52	1.57	1.62	1.65	1.66	1.68	1.68	1.67	1.64	1.47

Dimension
A	34 in
B	42.75 in
C	31.5 in

Dimensions
Base/Panel Length X Width Square base dimension on power roof ventilators. Square fan panel dimension on sidewall propeller fans.	34 x 34 in
Curb Cap Size Square base dimension on power roof ventilators.Tells you what size roof curb is needed.	34 in
Impeller Diameter Dimension of the impeller (propeller or wheel) in inches.	24 3/4 in
Roof Opening Width x Roof Opening Length Describes the size (width x lenght) of the roof opening that is required in order to properly install a given fan or ventilator.	30 1/2 x 30 1/2 in
Base Height Height of the curb cap on power roof ventilators.	1 3/4 in
Base Top to Shroud Top Dimension from the top of the base to the top of the shroud on a downblast exhaust ventilator.	31 1/2 in
Damper Width x Damper Height The "ACTUAL" damper width and height. Dampers are undersized to allow them to be mounted into the duct work/wall opening.	24 x 24 in
Bearing Size Bore size on the bearings utilized on a ventilator.	1 in
Height The height of a given product.	31 1/2 in
Weight Weight	126 lbs
Overall Diameter Describes the diameter at the widest point for a given product.	42 3/4 in

Performance
CFM Range CFM Range	4084-7804
FRPM Range FRPM Range	680-850

Application
Application Applications/uses for a particular fan or ventilator.	Exhaust General and Clean Air
Mounting Location Refers to the location where a fan or ventilator can be mounted.	Roof

Construction Features
Drive Type Transmission type of the ventilator (belt drive or direct drive).	Belt Drive
Impeller Type Style of impeller that is utilized on a product (i.e. Centrifugal or Axial).	Centrifugal Wheel
Impeller Material Type of material the impeller of a fan or ventilator is constructed of.	Aluminum
Housing Material Type of material the housing of a ventilator is constructed of.	Spun Aluminum
Includes Describes items that a particular product includes such as mounting hardware, etc.	Unassembled drive package
Max Inlet Temp The maximum entering air temperature that a fan or ventilator can withstand while in operation, without compromising the life of the unit.	180 °F
Certifications Certifications	Seismic AMCA Sound & Air High Wind and Hurricane UL/cUL 705 Seismic AMCA Sound & Air High Wind and Hurricane UL/cUL 705 Seismic AMCA Sound & Air High Wind and Hurricane UL/cUL 705 Seismic AMCA Sound & Air High Wind and Hurricane UL/cUL 705
Drive Package Description Describes whether the drive package on a particular ventilator is assembled, shipped loose, or must be provided by the customer.	Motor and drives shipped loose
Required Accessory Describes what accessory(s) must be purchased in addition to make the product fully functional.	Roof curb for new installations

Motor Information
Service Factor A safety factor to be used when the load temporarily exceeds the nominal horse power rating of a given motor. When used on a motor nameplate, a number which indicates how much above the nameplate rating a motor can be loaded without causing serious degrad	1.15
Phase Indicates the space relationships of windings and changing values of the recurring cycles of AC voltages and currents. The most common power supplies are either single- or three-phase.	3
Voltage The force that causes a current to flow in an electrical circuit. The voltage of a motor is usually determined by the supply to which it is attached. NEMA requires that motor be able to carry its rated horsepower at nameplate voltage plus or minus 1% al	208-230/460
HP The power required to drive an air moving device. Horsepower required varies with system conditions.	1 1/2
Hertz Measure of the frequency or cycles per second.	60
Motor Enclosure The housing or frame of the motor.	Open Drip Proof
RPM The number of times per minute the shaft of the motor (machine) rotates. This is a function of design and the power supply.	1800
Motor Insulation The class of motor insulation for a given motor. The temperature capabilities of each insulation class is defined as being the maximum temperature at which the insulation can be operated to yield an average life of 2, hours (A = 15?C, B = 135?C, F =	F
Nominal Efficiency Nominal Efficiency	86.5
NEMA Frame Size Refers to a set of physical dimensions of motors as established by NEMA (National Electrical Manufacturers Association). These dimensions include critical mounting dimensions.	56

General
Unit of Measure Unit of Measure	ea
Warranty Length Warranty Length	1 Year

Model GB, belt drive centrifugal roof exhaust fans are designed to meet the general clean air exhaust requirements for industrial and commercial buildings. Units feature a fully rolled windband bead for increased stability and easy transport. Fresh outside air is drawn in under the motor cover to maximize motor life. Ideal for new installations or for retrofit, replacement applications. Curb adapters and reducers available to eliminate the need to field fabricate transitions when there is an existing roof curb.

Centrifugal wheel provides high-efficiency and minimal sound
True vibration isolation supports the motor and wheel for long life and quiet operation
One-piece aluminum curb cap provides a weather-tight fit
Galvanized birdscreen protects the fan discharge from birds and small objects
Fully rolled windband bead for increased stability and easy transport
Positive motor cooling with fresh air results in maximum motor life
Permanent embossed aluminum nameplate for exact model and serial number identification
Motor, belt and pulleys shipped loose for field assembly

Similar to:

ACME PV-180
ACME PV-200
ACME PV-220
ACME PV-220
ACME PV-240
ACME PV-260
Carnes VEBK-21
Loren Cook ACEB-195
Loren Cook ACEB-210
Loren Cook ACEB-225
Loren Cook ACEB-245
Soler & Palau SDB-22
Soler & Palau SDB-22
Twin City Fan BCRD-240D
Twin City Fan BCRD-240DHP

Products specifications

Unit of Measure	ea
Service Factor	1.15
Application	Exhaust General and Clean Air
Mounting Location	Roof
Base/Panel Length X Width	34 x 34 in
Drive Type	Belt Drive
Phase	3
Voltage	208-230/460
HP	1 1/2
Impeller Type	Centrifugal Wheel
Impeller Material	Aluminum
Housing Material	Spun Aluminum
Includes	Unassembled drive package
Max Inlet Temp
Certifications	Seismic, AMCA Sound & Air, High Wind and Hurricane, UL/cUL 705
Warranty Length	1 Year
Drive Package Description	Motor and drives shipped loose
Required Accessory	Roof curb for new installations
Curb Cap Size
Impeller Diameter
Roof Opening Width x Roof Opening Length
Base Height
Base Top to Shroud Top
Damper Width x Damper Height	24 x 24 in
Bearing Size
Height
Weight
Overall Diameter
Hertz
Motor Enclosure	Open Drip Proof
RPM
Motor Insulation	F
Nominal Efficiency
NEMA Frame Size	56
CFM Range	4084-7804
FRPM Range	680-850

Motor HP	Horsepower. Used to indicate a fan's motor size.
Max BHP	Brake Horsepower. A measure of power consumption. Used to determine the proper motor horsepower and wiring.
Max Fan RPM	Revolutions Per Minute. Measure of maximum fan speed.
Min Fan RPM	Revolutions Per Minute. Measure of minimum fan speed.
Ps	Static Pressure. Resistance to airflow measured in inches of water gauge.
CFM	Cubic Feet Per Minute. A measure of airflow.
Sones	A measure of loudness. One sone can be approximated as the loudness of a quiet refrigerator at a distance of 5 feet. Sones follow a linear scale, that is, 10 sones are twice as loud as 5 sones.