Installation

Installations with inlet or discharge configurations that deviate from this standard may result in reduced fan performance. Restricted or unstable flow at the fan inlet can cause pre-rotation of incoming air or uneven loading of the fan wheel yielding large system losses and increased sound levels. Free discharge or turbulent flow in the discharge ductwork will also result in system effect losses. Refer to the following diagrams for the most efficient installation conditions.

Ducted Inlet Installations

Inlet Duct Turns - Installation of a duct turn or elbow

too close to the fan inlet

 

reduces fan performance

 

because air is loaded

 

unevenly into the fan

 

wheel. To achieve full fan

 

performance, there should

 

be at least three fan wheel

 

diameter between the turn

POOR

or elbow and the fan inlet.

Three fan wheel diameters

Turning

Vanes

GOOD

Inlet Spin - Inlet spin is a frequent cause of reduced fan performance. The change in fan performance is a function of the intensity of spin and not easily defined. The best solution is proper duct design and airflow patterns. Turning vanes reduce the effects of inlet spin.

R

 

 

Turning

R

 

 

 

 

 

o

 

 

ot

 

t

Vanes

 

 

 

a

 

a

 

 

t

 

 

t

 

 

i

 

 

i

 

 

o

 

 

o

 

 

n

 

 

n

POOR

 

 

 

GOOD

Ducted Outlet Installations

Discharge Duct Turns - Duct turns located near the fan discharge should always be in the direction of the fan rotation.

Fan performance is reduced when duct

 

turns are made immediately off the

 

fan discharge. To achieve cataloged

 

fan performance there

 

 

 

 

 

 

 

 

 

 

 

 

should be at least

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

three equivalent

 

 

 

 

o

n

 

 

 

 

 

 

ti

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

duct diameters of

 

o

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

straight ductwork

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between the fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

discharge and

 

 

 

 

 

 

 

POOR

 

any duct turns.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

io

n

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Length of Straight Duct

 

 

 

 

 

t

 

 

 

 

 

a

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GOOD

Non-Ducted Installations

Inlet Clearance - Installation of a fan with an open inlet too close to a wall or bulkhead will cause reduced fan performance. It is desirable to have one fan wheel diameter between parallel fan units and a minimum of three-fourths of a wheel diameter between the fan inlet and the wall.

One fan

One fan

wheel

wheel

diameter

diameter

Single Fan Installation

3/4 to

 

3/4 to

one fan

One fan

one fan

wheel

diameter

wheel

diameter

 

diameter

Parallel Fan Installation

Free Discharge - Free or abrupt discharge into a plenum results in a reduction in fan performance. The effect of discharge static regain is not realized.

4Model BCSW-FRP

Page 4
Image 4
Greenheck Fan 474051 manual Ducted Inlet Installations

474051 specifications

The Greenheck Fan 474051 is a high-performance, energy-efficient ventilation solution designed to meet the diverse needs of commercial and industrial applications. As a leader in the ventilation industry, Greenheck is known for its innovation and reliability, and the 474051 model exemplifies these qualities with its robust features and advanced technologies.

One of the standout characteristics of the Greenheck Fan 474051 is its powerful motor, which enables high airflow rates while maintaining low noise levels. This is particularly beneficial in environments where noise reduction is critical, such as schools, hospitals, and office buildings. The motor is designed with energy efficiency in mind, helping to reduce operational costs and lower the carbon footprint, aligning with the growing demand for sustainable technologies.

The 474051 fan also incorporates state-of-the-art blade design, which enhances airflow efficiency. The blades are engineered to provide optimal performance by minimizing turbulence and maximizing air movement. This results in improved overall system efficiency, ensuring that the fan can deliver the required air changes effectively without excessive energy consumption.

Another key feature of the Greenheck Fan 474051 is its modular construction, allowing for easy installation and maintenance. The fan is designed to be compatible with various mounting options, catering to the unique requirements of different spaces. Additionally, components are easily accessible for servicing, reducing downtime and enhancing reliability.

The fan is equipped with advanced control options that facilitate precise operation in response to varying ventilation demands. Users can take advantage of various control technologies, including variable speed drives, enabling them to adjust fan speed according to real-time conditions. This flexibility not only enhances comfort but also contributes to energy savings.

Furthermore, the 474051 model is built with durable materials and finishes, ensuring longevity and resilience in demanding environments. Its corrosion-resistant housings and components stand up to harsh conditions, making it suitable for applications in manufacturing, food processing, and chemical handling, among others.

In summary, the Greenheck Fan 474051 combines energy efficiency, advanced technology, and robust construction to provide superior ventilation solutions. Whether used in commercial or industrial settings, its features and capabilities make it a reliable choice for enhancing air quality while supporting sustainability initiatives.