Product Catalog
82Pages

PRODUCTS CATALOG P Box 2317, Gaylord, MI 49734 .O. Phone: 989-705-1768 • Fax: 989-732-1641 www.indairtech.com

INTRODUCTION Industrial Fans Industrial Air Technology services the industrial fan market with a complete line of centrifugal fans. We understand the rigorous requirements particular to industrial air movement applications. The fans we produce are designed and built for users who value quality craftsmanship and reliable performance. The Industrial Air Technology standard product offering includes backward inclined, industrial exhauster, radially tipped, and high pressure/turbo series fans. Nonstandard products are available to be customized to meet the specific needs of the customer’s...

TABLE OF CONTENTS Introduction to Industrial Air Tech.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Fan Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Motor Torque Selection, Material Handling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 6 Fan Efficiency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Selection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

FAN TYPES Backward Inclined (BI) Series: Used for relatively clean air applications with little or no particulate in the air-stream. Our most efficient offering. Widely applied in most industrial markets. Wheel Type BI CFM 295,000 Static Pressure ½" through 22" AMCA Class 2, 3, 4, and 5 Wheel Sizes 12-1/4" through 120" Arrangements 1, 3, 4, 8, and 9 BI Industrial Exhauster (IE) Series: Used for material handling, pressure blower, process gas, and many other industrial applications. Our best offering for material handling requirements. With the aid of blade and housing wear plates/liners,...

IRT — (Industrial Radial Tip) The radial tipped wheel design is the most efficient selection in the industrial exhauster series of fans. It offers efficiency while maintaining some slight material handling capabilities where there is a light dust loading or slightly abrasive type material in the airstream. The performance is very stable throughout most of the operating range. Excellent selection where energy savings are a premium but material handling characteristics are required. Radially Tipped (RT) Series: The major usage for this product is in process fan applications. The advantage of...

There are many applications which have a large fan moving a high volume of air but at a low static pressure, so a large horsepower motor is not required. In these instances, many times the motor is not large enough to turn the fan wheel and shaft due to high inertia requirements. In these instances one needs to consult with the motor or starter manufacturer to see if the motor is capable of the necessary load inertia. The chart that follows gives quick calculations that can be performed to see if the motor has the necessary start up capabilities. MOTOR TORQUE WR² x N² t= 1.62 x HPm t =...

FAN EFFICIENCY Mechanical Efficiency is defined as: The ratio of fan output to the power applied to the fan, can be helpful in selecting fan size, type or manufacturer for the same application. ME = TP x CFM 6356 x BHP TP = Fan Total Pressure =SPout + VPout ­ SPin – VPin – NOTE: Spin normally carries negative (-) sign Static Efficiency is defined as: The ratio of fan output less the kinetic energy (outlet volocity pressure) leaving the fan to the power applied to the fan. SE = SP x CFM 6356 x BHP SP = Fan Static Pressure =SPout + VPout ­ SPin – VPin – VPout – Therefore, ME is always greater...

The performance tables shown in this catalog may be a) Compute actual fan inlet air density correction SELECTION PROCEDURE used to select a fan for your specific application. When (refer to table for temperature and elevation selecting a fan be sure to keep the following parameters corrections). in mind to ensure the correct fan selection. b) Take the actual static pressure and divide it A) All ratings are based on standard air, defined as by the density correction factor to obtain the follows: air temperature is 70 F, 50% RH, 29.92" HG, equivalent fan static pressure at standard and 0.075...

^Kil"Technology Corp. CORRECTION FACTORS Variable Inlet Vanes 30% of wide open (free air) flow are possible with inlet vanes. As an inlet vane closes it imparts a spin on the direction of the wheel rotation. This pre-spin of the air helps to maintain down conditions. To compensate for this slight loss, you must increase correction is shown as pressure loss Outlet Damper Due to resistance in air flow caused by a wide open position on the outlet damper, a correction must be made to obtain required performance. Outlet damper losses must be added to the fan static pressure before entering the...

SPARK RESISTANCE Classifications for Spark Resistant Construction Type A — Construction requires that all parts in contact with the airstream must be a non-ferrous material. Type B — Construction requires fan to have a non-ferrous wheel and non-ferrous ring through which the shaft passes. Type C — Construction requires that a shift of the wheel or shaft not permit two ferrous parts to rub together. For this Standard, non-ferrous material shall be any material with less than 5% iron or any other material with demonstrated ability to be spark resistant. FAN LAWS Fan Size Varies with Speed and...

DESIGNATIONS FOR ROTATION & DISCHARGE OF CENTRIFUGAL FANS Clockwise 90º (Top Horizontal) Clockwise 135º (Top Angular Down) Clockwise 180º (Down Blast) Clockwise 225º (Bottom Angular Down) Clockwise 45º (Top Angular Up) Clockwise 360º (Up Blast) Clockwise 315º (Bottom Angular Up) Clockwise 270º (Bottom Horizontal) Counterclockwise 90º (Top Horizontal) Counterclockwise 135º (Top Angular Down) Counterclockwise 180º (Down Blast) Counterclockwise 45º (Top Angular Up) Counterclockwise 360º (Up Blast) Counterclockwise 315º (Bottom Angular Up) Counter225º (Bottom clockwise Angular Down)...