Greenheck G Manual
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Greenheck G Manual

Centrifugal roof downblast exhaust fans
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See also: Installation, Operation & Maintenance Manual
Centrifugal Roof Downblast Exhaust Fans
Models G and GB
• General Clean Air • Light Contaminants
• Seismic • High Wind • Variable Volume
®
Performance data now included.
March
2013

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Don
April 14, 2025

Need the PDF for the GB-100 series. Mainly for install specs for replacement fans.

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1 comments:
Mr. Anderson
April 15, 2025

The installation specifications for the Greenheck GB-100 series replacement fans can be found on page 50 of the manual under "Belt Drive, Model GB."

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Summary of Contents for Greenheck G

  • Page 1 Centrifugal Roof Downblast Exhaust Fans Models G and GB • General Clean Air • Light Contaminants • Seismic • High Wind • Variable Volume ® Performance data now included. March 2013...

  • Page 2: Table Of Contents

    Our Commitment ..... . 52 Codes and Certifications Greenheck Fan Corporation certifies that the Models G and GB fans shown herein are licensed to bear the AMCA Seal.

  • Page 3: Model Comparison

    Models G and GB Spun Aluminum • Downblast Centrifugal Roof Exhaust Fans Model Comparison Drive Impeller Type Performance Location Mounting Airflow Application Type Model 6,308 1.75 44,700 3.25 * Smoke Control available on models: 101, 101HP, 121, 131, 141, 141HP, 161, 161HP, 200, 240, 300, 360, 420 and 480. ** High wind limited to sizes 300 and smaller Greenheck models G and GB centrifugal roof exhaust fans provide the industry’s best performance and...

  • Page 4: Construction Features

    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 the Wheel venturi for maximum efficiency. Each wheel is robotically welded and statically and dynamically balanced for long life and quiet operation.

  • Page 5: Construction Features

    Construction Features Models G and GB MODEL G DIRECT DRIVE DRIVE FRAME (BELT DRIVE) MODEL GB BELT DRIVE...

  • Page 6: Emergency Smoke Control

    Applications G and GB models Emergency Smoke Control - GB When you buy a Greenheck • UL/cUL Listed for 500°F for 4 hours and (260°C) model GB with the smoke 1,000°F for 15 minutes. (538°C) control option, you receive a •...

  • Page 7: High Wind & Hurricane

    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. and can exert a force of 75 pounds per square foot of pressure—or over 900 pounds on a fan and curb.

  • Page 8: Vari-Green

    Vari-Green Motor Option ® Model G Features ® 1. Dial on Motor Control - a potentiometer (dial on Greenheck’s electronically commutated (EC) motor control) is mounted on the motor for easy Vari-Green (VG) motor combines motor speed adjustment for system balance. Simply turn technology, controllability and energy-efficiency the dial.

  • Page 9: Demand Control Ventilation

    Vari-Green Control Options ® The Vari-Green constant pressure control is preprogramed Demand Control Ventilation for and easy to install for applications that include venting Multistory Buildings dryers, bathrooms, residential type kitchen space or industrial process exhaust. Applications requiring constant pressure or variable volume can utilize G fans with Vari-Green motors Contact fans@greenheck.com for more information.

  • Page 10: Roof Curbs, Options, Accessories

    Options and Accessories Roof Curbs High Wind and Severe Duty Roof Curbs Prefabricated roof curbs reduce installation time and GPF/GPFP/GPFR – Approved for high wind costs by ensuring compatibility between the fan, the applications up to a 75 psf wind-load rating. curb and roof opening.
  • Page 11 Options and Accessories Birdscreen Speed Controllers for Standard Motors Galvanized mesh is standard, optional aluminum or stainless Available for use with shaded steel rigid wire are also available. pole and permanent split capacitor (PSC) open motors on model G fans. They provide an economical means of system balancing with direct drive fans.

  • Page 12: Typical Installations

    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.

  • Page 13: Model Number Code

    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.

  • Page 14: Models G-060-095

    Roof Downblast - Exhaust Direct Drive G-060 • G-065 ⁄ RPM (Direct) (492) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (308) (76) ⁄ (44) (432) Damper Size = 8 x 8 (203 x 203) Volume (cfm) Roof Opening = 10½ x 10½ (267 x 267) Shroud Thickness = 0.064 (1.6)
  • Page 15 Roof Downblast - Exhaust Direct Drive G-070 • G-075 ⁄ RPM (Direct) (492) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (308) (76) ⁄ (44) (432) Damper Size = 8 x 8 (203 x 203) Volume (cfm) Roof Opening = 10½ x 10½ (267 x 267) Shroud Thickness = 0.064 (1.6)
  • Page 16 Roof Downblast - Exhaust Direct Drive G-080 • G-085 ⁄ (552) RPM (Direct Drive) RPM (Vari Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (371) (102) ⁄ (44) (432) Damper Size = 10 x 10 (254 x 254) Roof Opening = 12½ x 12½ (318 x 318) Volume (cfm) Shroud Thickness = 0.064...
  • Page 17 Roof Downblast - Exhaust Direct Drive G-090 • G-095 ⁄ (552) RPM (Vari Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (371) (102) ⁄ (44) (432) 1000 1200 Damper Size = 10 x 10 (254 x 254) Roof Opening = 12½ x 12½ ( 318 x 318) Volume (cfm) Shroud Thickness = 0.064...

  • Page 18: Models G-097-G203

    Roof Downblast Exhaust Belt & Direct Drive GB-071 • G-097 ⁄ RPM (Belt) (619) 097-A RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) 097-B ⁄ (111) ⁄ (44) 097-C (483) Damper Size = 12 x 12 (305 x 305) Roof Opening = 14½...
  • Page 19 Roof Downblast Exhaust Belt & Direct Drive GB-081 • G-098 ⁄ RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) ⁄ (111) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Roof Opening = 14½...
  • Page 20 Roof Downblast Exhaust Belt & Direct Drive GB-091 • G-099 ⁄ RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) ⁄ (111) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Volume (cfm) Roof Opening = 14½...
  • Page 21 Roof Downblast Exhaust Belt & Direct Drive GB-101 • G-103 ⁄ RPM (Belt) (619) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) ⁄ (111) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Roof Opening = 14½...
  • Page 22 Roof Downblast Exhaust Belt & Direct Drive GB-101HP • G-103HP ⁄ (619) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) ⁄ (111) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Roof Opening = 14½...
  • Page 23 Roof Downblast Exhaust Belt & Direct Drive GB-121 • G-123 ⁄ (619) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) ⁄ (111) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Volume (cfm) Roof Opening = 14½...
  • Page 24 Roof Downblast - Exhaust Belt & Direct Drive GB-131 • G-133 ⁄ (721) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) (102) ⁄ (44) (483) Damper Size = 12 x 12 (305 x 305) Volume (cfm) Roof Opening = 14½...
  • Page 25 Roof Downblast - Exhaust Belt & Direct Drive GB-141 • G-143 ⁄ (721) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) (102) ⁄ (44) (559) Damper Size = 16 x 16 (406 x 406) Roof Opening = 18½...
  • Page 26 Roof Downblast - Belt Drive Roof Downblast - Exhaust Size- : GB • H-GB Belt & Direct Drive GB-141HP • G-143HP ⁄ (721) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) (102) ⁄ (44) (559) Damper Size = 16 x 16 Volume (cfm)
  • Page 27 Roof Downblast - Exhaust Belt & Direct Drive GB-161 • G-163 ⁄ (619) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) (102) 163-B ⁄ (44) 163-C (559) 1000 2000 3000 4000 5000 Damper Size = 16 x 16 Volume (cfm) Roof Opening = 18½...
  • Page 28 Roof Downblast - Belt Drive Roof Downblast - Exhaust Size- : GB • H-GB Belt Drive GB-161HP ⁄ RPM (Belt) (721) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (603) (102) ⁄ (44) (559) Damper Size = 16 x 16 (406 x 406) Roof Opening = 18½...
  • Page 29 Roof Downblast - Exhaust Belt & Direct Drive GB-180 • G-183 ⁄ (902) RPM (Belt) RPM (Direct) RPM (Vari-Green) Density 0.075 lb/ft Density 1.2 kg/m (711) ⁄ (140) 183-C ⁄ (44) (762) Damper Size = 18 x 18 (457 x 457) 1000 2000 3000...
  • Page 30 Roof Downblast - Exhaust Belt Drive GB-180HP ⁄ RPM (Belt) (902) Density 0.075 lb/ft Density 1.2 kg/m (711) ⁄ (140) ⁄ (44) (762) Damper Size = 18 x 18 (457 x 457) Volume (cfm) Roof Opening = 20½ x 20½ (521 x 521) Shroud Thickness = 0.064 (1.6)
  • Page 31 Roof Downblast - Exhaust Belt & Direct Drive GB-200 • G-203 ⁄ RPM (Belt) (902) RPM (Direct) Density 0.075 lb/ft Density 1.2 kg/m (711) ⁄ (140) ⁄ (44) (762) Damper Size = 18 x 18 (457 x 457) Roof Opening = 20½ x 20½ Volume (cfm) (521 x 521) Shroud Thickness = 0.064...
  • Page 32 Roof Downblast - Exhaust Belt Drive GB-200HP ⁄ RPM (Belt) (902) Density 0.075 lb/ft Density 1.2 kg/m (711) ⁄ (140) ⁄ (44) (762) Damper Size = 18 x 18 (457 x 457) Roof Opening = 20½ x 20½ (521 x 521) Volume (cfm) Shroud Thickness = 0.064 (1.6)

  • Page 33: Models Gb-220-540

    Roof Downblast - Exhaust Belt Drive GB-220 ⁄ (1086) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (800) ⁄ (146) ⁄ (44) (864) Damper Size = 24 x 24 (610 x 610) Roof Opening = 26½ x 26½ (673 x 673) Volume (cfm x 1000) Shroud Thickness = 0.064 (1.6)
  • Page 34 Roof Downblast - Exhaust Belt Drive GB-220HP ⁄ (1086) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (800) ⁄ (146) ⁄ (44) (864) Damper Size = 24 x 24 (610 x 610) Roof Opening = 26½ x 26½ (673 x 673) Volume (cfm x 1000) Shroud Thickness = 0.064 (1.6)
  • Page 35 Roof Downblast - Exhaust Belt Drive GB-240 ⁄ (1086) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (800) ⁄ (146) ⁄ (44) (864) Damper Size = 24 x 24 (610 x 610) Roof Opening = 26½ x 26½ (673 x 673) Volume (cfm x 1000) Shroud Thickness = 0.064 (1.6)
  • Page 36 Roof Downblast - Exhaust Roof Downblast - Exhaust Belt Drive Belt Drive GB-240HP ⁄ (1086) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (800) ⁄ (146) ⁄ (44) (864) Damper Size = 24 x 24 (610 x 610) Roof Opening = 26½ x 26½ (673 x 673) Volume (cfm x 1000) Shroud Thickness = 0.064...
  • Page 37 Roof Downblast - Exhaust Belt Drive GB-260 (1270) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m (914) ⁄ (210) ⁄ (44) (1016) Damper Size = 30 x 30 (762 x 762) Roof Opening = 32½ x 32½ Volume (cfm x 1000) (826 x 826) Shroud Thickness = 0.064 (1.6)
  • Page 38 Roof Downblast - Exhaust Belt Drive GB-300 (1270) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m (914) ⁄ (210) ⁄ (44) (1016) Damper Size = 30 x 30 (762 x 762) Volume (cfm x 1000) Roof Opening = 32½ x 32½ (826 x 826) Shroud Thickness = 0.064 (1.6)
  • Page 39 Roof Downblast - Exhaust Belt Drive GB-300HP (1270) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m (914) ⁄ (210) ⁄ (44) (1016) Damper Size = 30 x 30 (762 x 762) Roof Opening = 32½ x 32½ (826 x 826) Volume (cfm x 1000) Shroud Thickness = 0.064 (1.6)
  • Page 40 Roof Downblast - Exhaust Belt Drive GB-330 ⁄ (1492) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (978) ⁄ (225) ⁄ (44) (1168) Damper Size = 36 x 36 (914 x 914) Volume (cfm x 1000) Roof Opening = 38½ x 38½ (978 x 978) Shroud Thickness = 0.080 (2.0)
  • Page 41 Roof Downblast - Exhaust Belt Drive GB-360 ⁄ (1492) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (978) ⁄ (225) ⁄ (44) (1168) Damper Size = 36 x 36 (914 x 914) Volume (cfm x 1000) Roof Opening = 38½ x 38½ (978 x 978) Shroud Thickness = 0.080 (2.0)
  • Page 42 Roof Downblast - Exhaust Belt Drive GB-360HP ⁄ (1492) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (978) ⁄ (225) ⁄ (44) (1168) Damper Size = 36 x 36 (914 x 914) Volume (cfm x 1000) Roof Opening = 38½ x 38½ (978 x 978) Shroud Thickness = 0.080 (2.0)
  • Page 43 Roof Downblast - Exhaust Belt Drive GB-420 ⁄ (1657) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m (1118) ⁄ (248) ⁄ (44) (1321) Damper Size = 42 x 42 (1067 x 1067) Volume (cfm x 1000) Roof Opening = 44½ x 44½ (1130 x 1130) Shroud Thickness = 0.080 (2.0)
  • Page 44 Roof Downblast - Exhaust Roof Downblast - Exhaust Belt Drive Belt Drive GB-480 ⁄ (1873) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (1200) ⁄ (286) ⁄ (44) (1473) Damper Size = 48 x 48 (1219 x 1219) Roof Opening = 50½ x 50½ (1283 x 1283) Volume (cfm x 1000) Shroud Thickness = 0.080...
  • Page 45 Roof Downblast - Exhaust Belt Drive GB-500 (2108) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (1289) ⁄ (368) ⁄ (44) (1626) Damper Size = 54 x 54 (1371 x 1371) Roof Opening = 56½ x 56½ (1435 x 1435) Volume (cfm x 1000) Shroud Thickness = 0.100 (2.5)
  • Page 46 Roof Downblast - Exhaust Roof Downblast - Exhaust Belt Drive Belt Drive GB-540 (2108) RPM (Belt) Density 0.075 lb/ft Density 1.2 kg/m ⁄ (1289) ⁄ (368) ⁄ (44) (1626) Damper Size = 54 x 54 (1371 x 1371) Volume (cfm x 1000) Roof Opening = 56½...

  • Page 47: Specifications

    Specifications Vari-Green ® Vari-Green Control – Indoor Air Quality – Temperature / Humidity Control to be a packaged indoor air quality control designed to regulate fan speed based on level of temperature and/or relative humidity in a space. Control shall include a Proportional Integral Derivative (PID) feedback loop and shall have labeled terminal strips for easy wiring.

  • Page 48: Direct Drive, Model G

    Direct Drive Specifications Model G For models G-060 through G-095, the 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.

  • Page 49: High Wind & Hurricane, Seismic

    • 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.

  • Page 50: Belt Drive, Model Gb

    Wheels shall be Fans shall be model GB as manufactured by statically and dynamically balanced in accordance to Greenheck Fan Corporation of Schofield, AMCA Standard 204-05. Wisconsin, USA. Motors shall be heavy-duty ball bearing type, carefully matched to the fan load and furnished at the specified...

  • Page 51: High Wind & Hurricane, Seismic & Smoke Control

    C, 60 foot building height, and a type II building. on page 50, with seismic rated construction option • Fan shall be tested in accordance with ASTM and manufactured by Greenheck Fan Corporation in E-330-02 Structural Performance of Exterior Schofield, Wisconsin, USA.

  • Page 52: Quick Build Programs

    Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under Warranties. Prepared to Support Green Building Efforts 00.F&V.1000 R8 3-2013 R P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com Copyright © 2013 Greenheck Fan Corp.

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