Greenheck Fan PN 458294 manual Volume with a rotating vane anemometer as follows

Page 22
Fig. 32
2 in.
1/2 Height
Fig. 31

Grease-X-Tractor™ High Efficiency Filters or Grease Grabber™ Multi-Filtration System

A. Exhaust

With all the filters in place, determine the total hood exhaust

 

1/2 Width

volume with a rotating vane anemometer as follows:

1/4 Width

1/4 Width

 

 

 

 

 

1. All cooking equipment should be off. If the hood has internal short circuit make-up air, it should be turned off.

2.Measuring Velocities

•Measurement should be taken at six locations per filter. They must be over the inlet opening as shown in Fig. 31.

•Measure the velocity of each location. A digital 2.75 in.

(70 mm) rotating vane anemometer or its equivalent is suggested. The center of the anemometer should be held

2 in. (50 mm) from the face of the filters as in Fig. 32. It is helpful to make brackets to keep the anemometer at the 2 in. (50 mm) distance and parallel to the filter. Both squareness and distance are important for accuracy.

3.Calculate the average velocity for the filter.

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

5.Calculate each filters volume in CFM by multiplying the average velocity by the conversion factor.

Rotating Vane Anemometer

Nominal Filter Size (H x L)

Imperial

Metric

Inches

Millimeters

Conversion Factor

Conversion Factor

16 x 16

400 x 400

1.31 ft2

.122 m2

16 x 20

400 x 500

1.65 ft2

.153 m2

20 x 16

500 x 400

1.23 ft2

.114 m2

20 x 20

500 x 500

1.65 ft2

.153 m2

Example: (Imperial)

Hood Length = 7 feet 0 inches with four 20 x 20 filters.

Measure the velocities in fpm for each 20 x 20 filter (six readings per filter)

 

Filter 1

225

201

 

187

 

 

 

210

238

 

197

 

 

 

 

 

 

 

 

Filter 2

228

222

 

226

 

 

 

237

240

 

220

 

 

 

 

 

 

 

 

Filter 3

230

245

 

240

 

 

 

250

223

 

219

 

 

 

 

 

 

 

 

Filter 4

225

265

 

219

 

 

 

245

221

 

200

 

 

 

 

 

 

 

Average slot velocity for Filter 1

=

Sum of Velocity Readings

 

 

 

 

 

Number of Readings

 

 

 

 

=

1258

= 209.7 fpm

 

 

 

 

 

6

 

 

(repeat for each filter)

For a nominal filter size of 20 x 20, the conversion factor is 1.65

Volume for Filter 1 = Conversion Factor

x

Average Velocity

=

1.65 ft2

x

209.7 ft./min.

=

346.0 cfm (repeat for each filter)

Total hood volume

=Filter 1 + Filter 2 + Filter 3 + Filter 4 Volume Volume Volume Volume

=346.0 + 377.6 + 386.9 + 378.1 = 1488.6 cfm

Example: (Metric)

Hood Length = 2.13 meters, with four 500 x 500 mm filters.

Measure the velocities in m/hr for each 500 x 500 mm filter (six readings per filter)

 

Filter 1

4114.80

3675.88

 

3419.86

 

 

3840.48

4352.54

 

3602.74

 

 

 

 

 

 

Filter 2

4169.66

4059.94

 

4133.08

 

 

4334.26

4389.21

 

4023.36

 

 

 

 

 

 

Filter 3

4420.12

4480.56

 

4389.12

 

 

4572.00

4078.22

 

4005.07

 

 

 

 

 

 

Filter 4

4114.80

4846.52

 

4005.07

 

 

4480.56

4041.65

 

3657.60

 

 

 

 

 

Average slot velocity for Filter 1

=

Sum of Velocity Readings

 

 

 

 

 

Number of Readings

 

 

 

 

=

23006

= 3834 m/hr

 

 

 

 

 

6

 

(repeat for each filter)

For a nominal filter size of 500 x 500, the conversion factor is .153

Volume for Filter 1 = Conversion Factor

x

Average Velocity

=

.153 m2

x

3834 m/hr

=

586.7 m3/hr (repeat for each filter)

Total hood volume

=Filter 1 + Filter 2 + Filter 3 + Filter 4 Volume Volume Volume Volume

= 587 + 642 + 657 + 642 = 2528 m3/hr

22 Proximity Hood

®

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Page 21 Page 23
Contents Installation, Operation and Maintenance Manual Table of Contents Hood Weights Receiving and HandlingHood Installation Overview InstallationRear Filler Panel Installation Instructions Hood Hanging Height End Filler Panel Installation InstructionsContinuous Capture Plenum Hoods Supply Ductwork ExhaustElectrical Connections External Supply Plenum Installation Installation InstructionsInstalling the Back Supply Plenum Hanging the Back Supply PlenumHanging the Hood with Back Supply Plenum Hood Mounting InstructionsFull Enclosure Panels Plate Shelf with Duct Enclosure Panels Passover Shelf with Duct Enclosure Panels Backsplash Panel Installation Instructions Flat Backsplash PanelDuct Collar Installation Fire System InstallationExhaust Air Balancing Baffles Eabb Checking for BalanceTesting Hood Air Volume Baffle Filter Style Hoods Exhaust Balancing the Kitchen Exhaust SystemRotating Vane Anemometer Supply If Applicable Example for Perforated Face Supply185 + 187.0 fpm High Velocity Cartridge Filters Exhaust Example282 fpm 423.0 cfm Volume with a rotating vane anemometer as follows 1042 4012 m3/hr Amerex Wiring Plan View PRMAnsul Wiring Plan View EquipmentOverall Wiring Plan View HoodWiring for Switch Panels Weekly Maintenance Maintenance Daily MaintenancePeriodic Maintenance Proximity Hood Grease Grabber Filter Cleaning Frequent MaintenanceFilter Washing Frequency Guide Equipment Required CyclesTroubleshooting 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.
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