Double-Width Centrifugal Fan - Greenheck Fan

1 double -WidthCentrifugal Fan Performance SupplementJanuary2012 Engineering Information Air Performance Sound Performance Dimensional Data Table of Contents2 Greenheck Fan Corporation certifies that the backward inclined and airfoil Centrifugal fans shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and Publication 311 and comply with the requirements of the AMCA Certified Ratings of ContentsEngineering Data Motor Selection .. 3 Model Number Code .. 3 Motor Starting Torque .. 4 V-Belt Drives .. 4 High Temperature Operating Limits .. 4 Wheel Moments of Inertia .. 4 Fan RPM Limitations (derating factors) .. 4 Inlet Vane Performance.

2 5 Inlet Vane Actuator Torques .. 5 Effects of Air Density .. 6 Effect of Installation on Performance .. 7 Sound Performance Testing ..8-9 Sample Fan Selection ..10-11 Air and Sound Performance Data Tabulated Air Performance ..12-78 Fan Curves and Sound Power Ratings ..13-79 Dimensional Data Sizes 12-73 Double-Width , arr. 3 .. 80 Computer Aided Product Selection Program CAPSAll Greenheck products are supported by the industry s best product literature, electronic media, and Computer Aided Product Selection program, CAPS. Online, you can also find electronic copies of our product literature as well as storage, installation and maintenance information in our Installation and Operation , of course, you can always count on the personal service and expertise of our national and international representative organization.

3 To locate your nearest Greenheck representative call 715-359-6171 or visit our Web site at Drawings and Fan SpecificationsTo-scale CAD drawings along with detailed Centrifugal specifications can be found online at or within our Computer Aided Product Selection program (CAPS). Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station.

4 Greenheck will not be responsible for any removal or installation a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without WarrantyR AIRMOVEMENTAND CONTROLASSOCIATIONINTERNATIONAL, 3 Engineering DataBelt Drive (BIDW) Model Number Code36 - BIDW - 41 - 3 - CW - TH - II - A 500 Fan Size 12 - 73 Motor HorsepowerMotor RPMM = 3500 A = 1770 Arrangement 3 Fan Class I, II, IIIR otationCW, CCWD ischarge Position10 = 1 50 = 5 300 = 30 750 = 7515 = 1 75 = 7 400 = 40 1000 = 10020 = 2 100 = 10 500 = 50 1250 = 12530 = 3 200 = 20 600 = 60 1500 = 150TH = Top Horizontal TAU = Top Angular UpBH = Bottom Horizontal BAU = Bottom Angular UpUB = Upblast TAD = Top Angular DownDB = Downblast BAD = Bottom Angular DownWheelBI - Backward InclinedAF - Airfoil WheelSW - Single-WidthDW - double -WidthSeries 21 - Permalock Series 41 - Welded1800 RPM MotorsHPSingle Speed2 Speed2 WindingOpenTEExplosion-ResistantHigh EfficiencyOpen115V1PH230V1PH3PH115V230V1 PH3PH115V230V1PH3 PHOpenTE115V1PH3PH230V460V3PH230V460V3PH 1 448484848484848481 3 48485656565656561 256565656565656563 4565656565656565615656143T56143T56143T

5 143T5611 2145T 145T 145T 145T 145T145T 145T 145T562182T 182T 145T 182T 145T145T 145T 145T182T3182T182T182T 182T 182T184T5184T184T184T 184T 184T215T71 2213T213T213T 213T 213T254T10215T215T215T 215T 215T256T15254T254T254T 254T 254T256T20256T256T256T 256T 256T284T25284T284T284T 284T 284T286T 30286T286T286T 286T 286T324T40324T324T324T 324T 324T326T50326T326T326T 326T 326T365T60364T364T364T 364T 364T75365T365T365T 365T 365T100405T405T405T 405T 405T125405T444T444T 405T 444T150444T445T445T 444T 445T3600 RPM Motors3600 RPM motors are recommendedfor fan speed over 2700 RPMHPS ingle SpeedOpenTEExplosion-ResistantHigh Efficiency115V1PH230V1PH3PH115V230V1PH3P H115V230V1PH3 PHOpenTE230V460V3PH230V460V3PH1 3 4848561 248485656563 456565656561 565656565611 2143T 143T 143T 143T 143T143T 143T 143T2145T 145T 145T 145T 145T145T 145T 145T3182T 182T 145T 182T 182T182T 145T 182T5184T 182T 182T 184T184T 182T 184T71 2213T 184T 184T 213T213T 184T 213T10215T 213T 213T 215T215T 213T 215T15215T254T254T 215T 254T20254T256T256T 254T 256T25256T284TS284TS 256T 284TS30284TS286TS286TS 284TS 286TS40286TS324TS324TS 286TS 324TS50324TS326TS326TS 324TS 326 TSMotor SelectionGreenheck Centrifugal fans can be supplied with any motor that is commercially available, and appropriate for the fan size and performance required.

6 The tables show motor frame sizes corresponding to those motors readily : 1. Fractional horsepower motor frame sizes shown may change due to variations in voltage, special features and manufacturer. 2. Motors shown are ball bearing, continuous duty. Two speed motors are two winding, 1/3 reduction in RPM. 3. Single-phase motors are capacitor Number CodeThe model number code is a complete guide to ordering or specifying Greenheck Class II Centrifugal fan models. 4 Engineering DataFanSizeSteel Backward Inclined Centrifugal WheelsSteel Airfoil Centrifugal WheelsClass IClass IIClass IIIC lass IClass IIClass of Inertia (lb-ft2)Moments of inertia are shown for steel wheels. Aluminum wheels are one-third of the value Starting TorqueWhen selecting a motor for an industrial process fan, the motor must be capable of driving the fan at operating speed and also capable of accelerating the fan wheel, shaft and drive to the operating fan performance tables and curves in this catalog show the brake horsepower required to operate the fan once it is brought to operating speed.

7 For applications requiring a large air volume at a low static pressure, the BHP required at the fan s operating RPM may not be sufficient to initially start the fan. If the time required to bring the fan to speed is excessive, the motor winding insulation can be damaged due to excessive temperature rise and the life of the motor seriously a belt drive industrial process fan, the required motor starting torque capability can be expressed by the following formula:V-Belt DrivesConstant Speed DrivesAdvantages of constant speed drives include low vibration levels, ease of assembly and low cost. Fan speed changes can be accomplished in most cases simply by changing the motor speed drives are recommended over variable speed drives for applications that require motors 15 HP and larger, and all applications requiring 3600 RPM Speed DrivesVariable speed drives allow the fan speed to be changed by adjusting the pitch diameter of the motor pulley.

8 The power to the fan must be off and locked out, and the belts must be removed before manually adjusting the variable pitch RPM LimitationsThe maximum allowable wheel RPM shown on the fan performance pages are for fans of standard steel operating at 70 F. Since the strength of the fan wheel, shaft and bearings decreases with an increase in temperature, maximum allowable speeds must be reduced by the correction factors shown RPM Correction Factors For High TemperaturesTemperature( F)Wheel MaterialAluminumSteel316 Temperature Operating LimitsTemperatureMaterialArrangementOpti ons Included-20to180 FSteelAluminumStainless Steel3 NoneWR2M=WR2F x (FRPM)2x ( )MRPMWR2M=The moment of inertia that the motor must be capable of turning at the motor shaft, lb-ft2WR2F=The moment of inertia of the fan wheel, lb-ft2 FRPM =Fan RPMMRPM =Motor RPM 5 Engineering DataClassFan Size121315161820222427303336404449546066 73I5260667694114136220260280320360540640 740860100012001400II76869811614617622032 036040046052084098011601360160019202200 III1081261441722202603204405205606607601 240148017602000240030003400 Inlet Vane PerformanceAs inlet vanes are closed, they impart a spin to the airflow in the direction of wheel rotation and reduce airflow, static pressure and brake horsepower as shown in the graphs below.

9 The graphs show how CFM, static pressure and brake horsepower are affected as inlet vanes are modulated from 100% open to 0% open in a typical variable air volume system. Graph 3 provides RPM and BHP correction factors for fans equipped with inlet Open25% Open50% Open75% Open100% OpenWithout Vanes% Peak Static Pressure% Wide Open Volume10090807060504030201000 10 20 30 40 50 60 70 80 90 100% Peak Brake Horsepower% Wide Open Volume10090807060504030201000 10 20 30 40 50 60 70 80 90 10050% Open75% Open100% OpenWithout Vanes25% OpenGraph 1 Graph 2 RPM & BHP CorrectionsTo compensate for pressure drop through inlet vanes.

10 A percentage increase in fan RPM and BHP at full-load design conditions must be graph 3 with % wide open volume (see page 9 for calculation of % WOV) and the appropriate fan horizontally left to the % increase scale. Record the % the selected fan RPM by the % increase shown. Also increase the BHP by the % increase and BHP Correction Factors for Fans with Inlet VanesRPM Fan Sizes 24-73 RPM Fan Sizes 12-22 BHP Fan Sizes 24-73 BHP Fan Sizes 12-222018161412108642050 60 70 80 90 100% Increase% Wide Open Volume (without vanes)Graph 3 Minimum Recommended Actuator Torque For Inlet Vanes (inch-lbs.) for Double-Width FansUse the table below to determine minimum torque required for an inlet vane actuator.