Greenheck Fan PN 458294 manual Rotating Vane Anemometer

Page 17

Measure the velocity of each location.

A digital 2.75 in. (70 mm) rotating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vane anemometer or equivalent

 

Rotating Vane Anemometer

is suggested. The center of the

Airflow

 

 

 

 

 

 

anemometer should be held 2 in.

 

 

 

 

 

 

 

 

 

 

 

 

 

(50 mm) from the face of the filters

 

 

 

 

 

 

 

as shown in Fig. 22. It is helpful

 

2 in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to make a bracket to keep the

 

 

 

 

 

 

 

anemometer at the 2 in. (50 mm)

 

 

 

 

 

 

 

distance and parallel to the filter.

 

 

 

 

 

Fig. 22

 

 

 

 

 

 

 

 

Both squareness and distance are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

very important for accuracy.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Calculate the average velocity for the filter.

3.Determine the filter’s conversion factor from the table.

4.Calculate the filter’s volume in CFM (m3/hr) by multiplying the average velocity by the conversion factor.

5.Calculate the hood’s volume by repeating the process for the remaining filters and summing the individual filter volumes.

Nominal Filter Size (H x L)

Imperial

Metric

Inches

Millimeters

Conversion Factor

Conversion Factor

 

 

 

 

16 x 16

400 x 400

1.63

.157

16 x 20

500 x 400

2.13

.198

20 x 16

400 x 500

1.90

.177

20 x 20

500 x 500

2.48

.230

Example: Exhaust Only Hood with three 20 x 16 Filters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

255

 

 

 

 

 

 

250

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4663.44 m/h)

 

 

 

 

(4572 m/h)

 

 

 

 

Measured velocities in fpm for one 20 x 16 Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

256

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sum of Velocity Readings

 

 

 

 

 

 

 

 

 

(4681.73 m/h)

 

 

 

 

 

 

 

Average Velocity

=

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

248

 

 

 

 

 

 

240

 

 

 

 

Number of Readings

 

 

 

 

 

 

 

(4535.42 m/h)

 

 

 

(4389.12 m/h)

 

 

 

 

(Imperial)

=

255 + 250 + 256 + 248 + 240 = 249.8 fpm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Metric)

=

4663 + 4572 + 4681 + 4535 + 4389

= 4568 m/hr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For a nominal filter size of 20 x 16, the conversion factor is 1.90 Imperial (.177 Metric)

 

 

 

 

 

 

 

 

 

Volume for one filter

=

Conversion Factor

x

Average Velocity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

=

1.90

 

x

249.8 fpm

=

 

 

474.6 cfm

 

 

 

 

 

 

 

 

 

 

=

.177

 

x

4568 m/hr

=

 

 

809 m3/hr

 

 

 

 

 

 

 

 

 

Total hood volume

=

(Filter 1 Volume)

+

(Filter 2 Volume)

+

(Filter 3 Volume)

 

 

 

 

 

 

 

 

 

 

 

 

=

474.6

+

 

455.4

+

470.1

 

 

 

=

1400.1 cfm

 

=

809

+

 

880

+

799

 

 

 

 

=

2488 m3/hr

17 Proximity Hood

®

Image 17
Contents Installation, Operation and Maintenance Manual Table of Contents Receiving and Handling Hood WeightsRear Filler Panel Installation Instructions InstallationHood Installation Overview Continuous Capture Plenum Hoods End Filler Panel Installation InstructionsHood Hanging Height Electrical Connections Ductwork ExhaustSupply Installation Instructions External Supply Plenum InstallationHanging the Back Supply Plenum Installing the Back Supply PlenumHood Mounting Instructions Hanging the Hood with Back Supply PlenumFull Enclosure Panels Plate Shelf with Duct Enclosure Panels Passover Shelf with Duct Enclosure Panels Flat Backsplash Panel Backsplash Panel Installation InstructionsFire System Installation Duct Collar InstallationChecking for Balance Exhaust Air Balancing Baffles EabbBalancing the Kitchen Exhaust System Testing Hood Air Volume Baffle Filter Style Hoods ExhaustRotating Vane Anemometer Example for Perforated Face Supply Supply If Applicable185 + 187.0 fpm Example High Velocity Cartridge Filters Exhaust282 fpm 423.0 cfm Volume with a rotating vane anemometer as follows 1042 4012 m3/hr PRM Amerex Wiring Plan ViewEquipment Ansul Wiring Plan ViewHood Overall Wiring Plan ViewWiring for Switch Panels Periodic Maintenance Maintenance Daily MaintenanceWeekly Maintenance Proximity Hood Frequent Maintenance Grease Grabber Filter CleaningEquipment Required Cycles Filter Washing Frequency GuideTroubleshooting Problem Cold air can be felt by the cook at the hood Replacement Parts Maintenance Log Warranty

PN 458294 specifications

Greenheck Fan PN 458294 is a prominent product in the HVAC industry, designed to deliver high performance, efficiency, and reliability in various applications. This unit is widely recognized for its ability to optimize airflow while minimizing energy consumption, a feature that is becoming increasingly vital in current energy-conscious markets.

One of the key features of the Greenheck Fan PN 458294 is its robust construction. Built with durable materials, this fan is engineered to withstand harsh environmental conditions, making it suitable for both indoor and outdoor installations. The corrosion-resistant finish further enhances its resilience, ensuring a longer lifespan and reduced maintenance costs.

The fan is equipped with advanced aerodynamic designs that improve its airflow performance. This design focus not only maximizes the fan's efficiency but also provides quieter operation, which is a crucial factor in sensitive environments such as offices, schools, and hospitals. The noise reduction technology integrated into the unit helps maintain a comfortable atmosphere while keeping operational disturbances to a minimum.

In terms of technology, the Greenheck Fan PN 458294 features state-of-the-art motor technology that offers variable speed control. This capability allows users to adjust the fan's operation according to specific needs, enhancing energy efficiency while ensuring optimal airflow. The internally mounted motor and belt drive system contribute to reduced vibration and increased stability, further lowering wear and tear over time.

This fan also incorporates innovative control options, allowing for easy integration into existing building management systems. This smart technology enables users to monitor and adjust performance remotely, ensuring maximum efficiency and adaptability to changing operational demands.

Another noteworthy characteristic of the Greenheck Fan PN 458294 is its versatility. It can be utilized in a variety of applications, including industrial ventilation, commercial exhaust, and air supply systems. The wide range of available configurations and accessory options makes it an ideal choice for meeting diverse project requirements.

In conclusion, the Greenheck Fan PN 458294 stands out in the HVAC market due to its combination of robust construction, advanced aerodynamic design, innovative motor technology, and versatile application capabilities. As energy efficiency continues to be a priority in building design, this fan offers a reliable solution for maintaining optimal airflow while minimizing environmental impact.