Fpm 423.0 cfm | Greenheck Fan PN 458294 instruction

High Velocity Cartridge Filters

A. Exhaust

With all the filters in place, determine the total hood exhaust volume with a shortridge meter as follows:

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

2.Measuring Velocities

•Set up the shortridge meter. Leave all holes of Velgrid open. Do NOT tape over holes that are not over openings. The conversion factor takes this into account.

•Position the grid over each filter as shown.

•Take velocity readings for each filter.

3.*Calculate each filter’s volumetric flow rate by summing the flow rate of each individual filter in the hood.

4.*Calculate the total hood’s volumetric flow rate by summing the flow rate of each individual filter in the hood.

*Note: For best accuracy multiply the velocity of each filter by

its conversion factor and sum the flow rates. Averaging the velocity measured for all filters may cause error.

Nominal Filter Size (H x L)		Imperial	Metric
Inches	Millimeters	Conversion Factor	Conversion Factor

16 x 16	400 x 400	1.22 ft2	.113 m2
16 x 20	400 x 500	1.67 ft2	.155 m2
20 x 16	500 x 400	1.21 ft2	.112 m2
20 x 20	500 x 500	1.50 ft2	.139 m2

Example: Measured velocities for 20 x 20 filter = 282 fpm (5157 m/hr)

Flow rate for one filter	=	Conversion	x	Average
		Factor		Velocity
(Imperial)	=	1.50	x	282 fpm	=	423.0 cfm
(Metric)	=	.139	x	5157 m/hr	=	717 m3/hr

Total hood flow rate =	(Filter 1 Flow Rate) +	… + (Filter X Flow Rate)
=	423.0 + 421.8 + 420.7 + 418.2 = 1683.7 cfm
=	717 + 717 + 715 + 711	= 2860 m3/hr

Fig. 29

1/2 width

1/2 height

Fig. 30

21 Proximity Hood

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.

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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.