Greenheck Fan Enhance Your SQ Fan Experience with Greenheck Vari Green Speed Controller and Accessories

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Options and Accessories

Aluminum Construction

Aluminum construction is available for all direct drive sizes 60-160 and belt drive sizes 70-300. Some drive frame components may still be of galvanized construction to maintain structural integrity.

Speed Controllers

Available for use with shaded pole and permanent split capacitor (PSC) motors on model SQ fans. They provide an economical means of system balancing with direct drive fans.

Inlet and Outlet Guards

Inlet and outlet guards provide protection for non- ducted applications. Guards are fabricated of welded wire on a galvanized steel frame. They are easily removed for maintenance and inspection.

Belt Drive Motor Cover and Belt Guard

For belt driven fans, combination motor cover and belt guards constructed of galvanized steel are available for protection of motors, drives and personnel. Standard on units specified with UL.

Direct Drive Motor Cover

Formed, galvanized steel motor covers are available to isolate direct drive motors from the airstream. When motor covers are furnished, vents to the exterior of the fan are provided to ensure sufficient motor cooling.

Backdraft Dampers

Gravity or motorized parallel blade dampers (model WD-330) are available for duct mounting. These dampers feature sturdy galvanized frames, aluminum blades with vinyl blade seals, and a balanced design for minimal resistance to airflow.

Control Dampers

Square, opposed blade volume control dampers (model VCD) are available for duct mounting. These dampers feature sturdy galvanized frames, and steel blades with optional blade and jamb seals.

A balanced design results in minimal resistance to airflow.

Coatings

Wide variety of coatings and colors are available.

Decorative coatings are available in sixteen standard colors.

Protective coatings are available in a choice of five electrostatic applied powders providing an available selection for most environments.

All Greenheck coatings

and resistance charts can be found in our Performance Coatings for Commercial & Industrial Fans brochure.

Inlet Vane Dampers

Variable inlet vane dampers (model IVDE) are available for models SQ and BSQ sizes 140-420 and are factory-assembled to the fan. They can be specified for either manual or automatic operation (controls furnished by others). These dampers are constructed of heavy-gauge steel and feature uniform blade movement for positive control. Companion inlet rings for round duct connections are also available.

Insulated Housing

For noise reduction and condensation control, the interior of the fan housing can be lined with a 1-inch fiberglass duct liner. The optional motor cover can also be insulated.

The table depicts the radiated sound reduction that can be obtained in each octave band for the insulated housing and motor cover together.

Approximate Radiated Sound Attenuation (dB)

Octave Band

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

Sizes 60 - 130

-2

-7

-4

-4

-6

-13

-13

-9

 

 

 

 

 

 

 

 

 

Sizes 140 - 420

-3

-2

-5

-4

-5

-5

-7

-8

 

 

 

 

 

 

 

 

 

Wiring Pigtail

Allows direct hook-up to the power supply eliminating field wiring at the fan.

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Contents Centrifugal Inline Fans Table of Contents Models SQ and BSQModel Comparison Standard Construction Features Drive Frame Features Vari-GreenOptionsBenefits Vari-Green AdvantagesDemand Control Ventilation for Multistory Buildings Time of DayOptions and Accessories Model SQ Model Model BSQ Model Selection ProcedureFilter Options Discharge Configurations Discharge ConfigurationSide Discharge Model BSQSQ-BSQ 243⁄4SQ-BSQ 13⁄8 51⁄2 63⁄4 25⁄8 Base Mount or Hanging IsolatorsModel BSQ 13⁄8 51⁄2 63⁄4 25⁄16 SQ-BSQ Typical Installation VG = Vari-GreenSQ 60-65- Direct Drive SQ 70-75- Direct Drive SQ 80-85- Direct Drive 090 Damper size = 12 x SQ 90-95- Direct Drive095 SQ 100 Direct Drive 100SQ 120 Direct Drive 120SQ 130 Direct Drive 130SQ 140 Direct Drive 140SQ 160 Direct Drive 160BSQ 70 Belt Drive 2486BSQ 80 Belt Drive 15301550 BSQ 90 Belt Drive2691 BSQ 100 Belt Drive 2556BSQ 120 Belt Drive 2490BSQ 130 Belt Drive 1735BSQ 130HP Belt Drive 2770790 130HP1615 1340 BSQ 140 Belt Drive1890 BSQ 140HP Belt Drive 2641 22701900 1530 140HPBSQ 160 Belt Drive 2001BSQ 160HP Belt Drive 23211990 160HP180 BSQ 180 Belt Drive1010 180HP BSQ 180HP Belt Drive1385 1120 BSQ 200 Belt Drive 1375990 200BSQ 200HP Belt Drive 16021350 200HPBSQ 240 Belt Drive 1070730 240240HP BSQ 240HP Belt Drive1605 BSQ 300 Belt Drive 855 967735 615 495 375 300HPBSQ 300HP Belt Drive 770 560360 BSQ 360 Belt Drive811 BSQ 360HP Belt Drive 880775 590 360HP420 BSQ 420 Belt Drive670 Model SQ Leed informationConstant Pressure Remote DialBelt Drive Specifications Model BSQSQ-75 through 120 BSQ-70 through Through 180 SQ-60 through 130 BSQ-130High Pressure BSQ-130HP through 240HP BSQ-300 through BSQ-300HP and 360HP

SQ/BSQ specifications

The Greenheck Fan SQ/BSQ series represents a significant advancement in the realm of ventilation solutions, designed to cater to both commercial and industrial applications. With an emphasis on performance, efficiency, and reliability, these fans have become a go-to choice for engineers and contractors alike.

One of the main features of the SQ/BSQ series is their advanced airflow design. The fans are engineered with high-performance backward-inclined blades, which not only optimize airflow but also minimize noise levels, making them ideal for settings where quiet operation is essential. This design allows the SQ/BSQ fans to handle a wide range of static pressures, delivering consistent airflow even in varying conditions.

Another notable characteristic of the SQ/BSQ fans is their robust construction. Made with high-quality materials, these fans are built to withstand the rigors of industrial environments. The casings are typically constructed from galvanized steel, with optional coatings available for enhanced corrosion resistance. This durability ensures long-lasting performance, reducing the need for frequent replacements and maintenance.

Equipped with the latest motor technology, the SQ/BSQ series offers energy-efficient options that comply with various energy standards. The fans utilize a range of motor types, including premium efficiency and electronically commutated motors (ECM), which contribute to lower operating costs and reduced energy consumption. This focus on energy efficiency aligns with increasing regulatory requirements and environmental considerations.

The SQ/BSQ series also embraces advanced control technologies. Through the integration of variable frequency drives (VFD), users can achieve precise control over fan speed and airflow, allowing for better system optimization. This capability is particularly beneficial in applications where airflow demands fluctuate, ensuring that energy usage remains efficient.

Lastly, Greenheck has prioritized ease of installation and maintenance with the SQ/BSQ models. The fans are designed to facilitate quick installation, featuring accessible service points for maintenance tasks. This ease of access helps reduce downtime and improves overall operational efficiency.

In summary, the Greenheck Fan SQ/BSQ series combines advanced airflow design, robust construction, energy-efficient motor technology, and intelligent control options to deliver a comprehensive and reliable ventilation solution. Whether used in commercial buildings, warehouses, or industrial facilities, these fans stand out for their performance and versatility, making them a preferred choice in the ventilation market.