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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
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Models G and GB Spun Aluminum • Downblast Centrifugal Roof Exhaust Fans PERFORMANCE AND DIMENSIONS: Contents Model Comparison . . . . . . . . . . . . . . . . . . . . . 3 . Models G-060-095 . . . . . . . . . . . . . . . . . . 14-17 Models G-097-G203 . . . . . . . . . . . . . . . . . 18-31 Construction Features . . . . . . . . . . . . . . . . . 4-5 GB-071-200 . . . . . . . . . . . . . . . . . 18-32 Emergency Smoke Control . . . . . . . . . . . . . . 6 . Models GB-220-540 . . . . . . . . .
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Models G and GB Spun Aluminum • Downblast Centrifugal Roof Exhaust Fans Model Comparison Drive Impeller Performance Location Mounting Airflow Application Type Type Model G 6,308 1 .5 $ GB 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
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Construction Features Models G and GB Standard Construction Features An aluminum, backward-inclined, non-overloading centrifugal wheel is utilized to generate high-efficiency and minimal sound . Wheel cones are carefully matched to Wheel 1 the venturi for maximum efficiency. Each wheel is robotically welded and statically and dynamically balanced for long life and quiet operation . NEMA-1 switch is factory mounted and wiring is provided from the motor as standard Disconnect (other switche
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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
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Applications G and GB models Emergency Smoke Control - GB When you buy a Greenheck • UL/cUL Listed for 500°F (260°C) for 4 hours and model GB with the smoke 1,000°F (538°C) for 15 minutes . control option, you receive a • Half the weight of traditional smoke control fans, fan with the industry’s best ideal choice for roof load concerns . performance and durability for • Low profile, height is less than half of traditional smoke control applications (as 1 smoke control fans, maximum of 5
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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 struc
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Options • Direct drive fans are often preferred where ™ Vari-Green Motor - Model G maintenance access is difficult . Greenheck’s electronically commutated • The Vari-Green motor reduces noise and vibration Vari-Green™ (VG) motor combines motor as well as providing solutions for variable volume technology, controllability and energy- system balancing . efficiency into one single low maintenance unit and Features is the industry’s first fully controllable motor . When combined with Greenhe
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Options Example: Initial Cost Comparison Belt Drive vs. Direct Drive Vari-Green Demand Control Ventilation for multi-story buildings GB-121 Applications requiring constant pressure control or variable volume as used in G-123-VG multi-storied buildings such as hotels, multi-family complexes, institutional $0 100 200 300 400 500 600 700 facilities, and high rise commercial buildings, Fan Price VFD Price may utilize G fans with Vari-Green™ motor and The diagram show
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Options and Accessories Roof Curbs High Wind and Severe Duty Roof Curbs Prefabricated roof curbs reduce installation time Provided as an option with models G and GB. The and costs by ensuring compatibility between severe-duty roof curb models can ship separately the fan, the curb and roof opening . All curbs are to allow for final finishing of the roof prior to the fan insulated with fiberglass. A wide variety of roof arrival and installation . curbs are available, including: flanged, pitche
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Options and Accessories Speed Controllers for Coatings Standard Motors A wide variety of coatings and colors are available. Available for use with shaded Greenheck coatings and resistance charts can be pole and permanent split found in the Performance Coatings Commercial capacitor (PSC) open motors and Industrial Fans catalog and in our Product on model G fans . They provide Application Guide—Performance Coatings for an economical means of system Ventilation Products . balancin
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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 figure 1 guidelines governing these installations . Local code authorities sh
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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 Good to the ventilation system . Obstructions, transitions, Good 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 B Provide uniform airf
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Roof Downblast - Exhaust Direct Drive G-060 • G-065 3 19 ⁄8 RPM (Direct) 3 Density 0.075 lb/ft (492) 3 Density 1.2 kg/m 1 *12 ⁄8 (308) 3 (76) 3 1 ⁄4 (44) 17 (432) Damper Size = 8 x 8 (203 x 203) Roof Opening = 101/2 x 101/2 (267 x 267) Volume (cfm) Shroud Thickness = 0.064 (1.6) Motor Cover Thickness = 0.040 (1.0) 3 Curb Cap Thickness = 0.064 (1.6) Volume (m /hr ) ^Approximate Unit Weight = 15 lbs. (7 kg) Direct Drive RPM All dimensions in inches (millimeters) . *May be greater depending
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Roof Downblast - Exhaust Direct Drive G-070 • G-075 3 RPM (Direct) 19 ⁄8 3 Density 0.075 lb/ft (492) 3 Density 1.2 kg/m 1 *12 ⁄8 (308) 3 (76) 3 1 ⁄4 (44) 17 (432) Damper Size = 8 x 8 (203 x 203) Roof Opening = 101/2 x 101/2 (267 x 267) Volume (cfm) Shroud Thickness = 0.064 (1.6) Motor Cover Thickness = 0.040 (1.0) 3 Curb Cap Thickness = 0.064 (1.6) /hr ) Volume (m ^Approximate Unit Weight = 15 lbs. (7 kg) Direct Drive RPM All dimensions in inches (millimeters) . *May be greater depending on
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080-D 080-G 080-VG 080-E 085-E 085-D 085-G 085-VG Roof Downblast - Exhaust Direct Drive G-080 • G-085 3 21 ⁄4 0.9 220 (552) RPM (Direct Drive) RPM (Vari Green) 200 0.8 3 Density 0.075 lb/ft 3 Density 1.2 kg/m 180 0.7 160 0.6 5 ⁄8 *14 140 (371) 0.5 120 100 0.4 4 (102) 80 0.3 3 1 ⁄4 (44) 60 17 0.2 (432) 40 0.1 20 0 0.0 0 100 200 300 400 500 600 Damper Size = 10 x 10 (254 x 254) Roof Opening = 121/2 x 121/2 (318 x 318) Volume (cfm) Shroud Thickness = 0.064 (1.6) 0 100 200 300 400 5
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090-E 090-G 095-E 090-D 090-VG 095-G 095-D 095-VG Roof Downblast - Exhaust Direct Drive G-090 • G-095 3 21 ⁄4 1.0 (552) RPM RPM (Vari Green) 3 Density 0.075 lb/ft 3 Density 1.2 kg/m 200 0.8 5 ⁄8 *14 150 0.6 (371) 4 (102) 100 0.4 3 1 ⁄4 (44) 17 50 0.2 (432) 0 0.0 0 200 400 600 800 1000 1200 Damper Size = 10 x 10 (254 x 254) Roof Opening = 121/2 x 121/2 318 x 318) ( Volume (cfm) Shroud Thickness = 0.064 (1.6) 0 500 1000 1500 2000 Motor Cover Thickness = 0.040 (1.0) 3 Curb Cap Thi
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Roof Downblast Exhaust Belt & Direct Drive GB-071 • G-097 3 24 ⁄8 RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) HP 3 Density 0.075 lb/ft 3 Density 1.2 kg/m 3 ⁄4 *23 (603) 3 4 ⁄8 (111) 3 1 ⁄4 (44) 19 (483) Damper Size = 12 x 12 (305 x 305) Roof Opening = 141/2 x 141/2 (368 x 368) Volume (cfm) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) 3 Curb Cap Thickness = 0.064 (1.6) Volume (m /hr ) ^Approximate Unit Weight G/GB = 54/60 lbs. (24/27 kg) Direct Drive RPM All dim
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Roof Downblast Exhaust Belt & Direct Drive GB-081 • G-098 3 24 ⁄8 RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) HP 3 Density 0.075 lb/ft 3 Density 1.2 kg/m 3 ⁄4 *23 (603) 3 4 ⁄8 (111) 3 1 ⁄4 (44) 19 (483) Damper Size = 12 x 12 (305 x 305) Volume (cfm) Roof Opening = 141/2 x 141/2 (368 x 368) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) 3 Volume (m/hr ) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight G/GB = 54/60 lbs. (24/27 kg) Direct Drive RPM All di
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Roof Downblast Exhaust Belt & Direct Drive GB-091 • G-099 3 24 ⁄8 RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) HP 3 Density 0.075 lb/ft 3 Density 1.2 kg/m 3 ⁄4 *23 (603) 3 4 ⁄8 (111) 3 1 ⁄4 (44) 19 (483) Damper Size = 12 x 12 (305 x 305) Volume (cfm) Roof Opening = 141/2 x 141/2 (368 x 368) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) 3 Volume (m /hr ) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight G/GB = 54/61 lbs. (24/28 kg) Direct Drive RPM All di
