Propeller Upblast Roof Fans
Propeller Upblast Roof FansModels RBU, RBUMO, RDU and RGUDirect Drive, Belt Drive and GravityApril2010
Propeller Upblast Roof FansQuick Deliveryand QuickBuild ProgramsGreenheck’s Quick Delivery Programprovides many options to help you meet yourproject’s schedule. Stocking warehouses anddistribution centers around the world ensure sameday pickup and same-day shipment for orders in by2 p.m. (CST). Hundreds of custom products can bemanufactured through Quick Build in just days.Greenheck upblast propeller fans are designedto discharge contaminants up and away fromthe building for most commercial jobs and manyindustrial applications. These roof exhaust fansinclude both belt and direct drive fans with steelor aluminum blades. Drive frames and panelsare constructed to match the level of duty andmotor size.Models RBU and RBUMO are belt drive fans thatoffer the ability to adjust fan speed for systembalancing if necessary. These models also offerflexibility in speeds and motor selections. ModelRBU has the motor in the airstream. Model RBUMOhas the motor out of the airstream, which allows forhigh temperature air to be exhausted.RDU direct drive fans are often preferred for jobswhere maintenance access is difficult. Maintenancecosts are generally lower with direct drive fans sincethere are no belts or bearings to replace and nopulleys to adjust. Wide range of construction and performancecapabilities offered, the most complete upblastpropeller fan line available. Regardless of fan size, performance or duty level,all Greenheck Upblast Propeller Roof Fans arebuilt to perform with the same high standards ofreliability and durability. Greenheck subjects these products to extensivelife testing, assuring you that the fans will provideyears of reliable performance. Performance as cataloged is assured. All RBU,RBUMO and RDU models are tested in our AMCAAccredited Laboratory, and all are licensed tobear the AMCA Sound and Air Performance seal.Greenheck Fan Corporation certifies that the RBU,RBUMO and RDU models shown herein are licensedto bear the AMCA seal. The ratings shown are basedon tests and procedures performed in accordance withAMCA Publication 211 and AMCA Publication 311 andcomply with the requirements of the AMCA CertifiedRatings Program.2For available options and accessories please referto the Greenheck Stock & Quick Build Catalog.Leading EdgeTechnical SupportWhen product and IOM(Installation, Operationand Maintenance Manual)information is needed, our products are supportedby the industry’s best product literature, electronicmedia and Computer Aided Product Selection(CAPS) program. You’ll also find this information onour Web site at www.greenheck.comOur national and international representativeorganization provide personal service and expertise.To locate your nearest Greenheck representative,call 715-359-6171 or visit our Web site atwww.greenheck.com.Outstanding Customer ServiceGreenheck’s experienced staff is ready toanswer your questions and delivers solutions.Our representatives have a wealth of industryand product knowledge, they maintain the latestinformation and can process orders directly toour factory.Count on the personal service and expertisefrom our national and international representativeorganizations. To locate the Greenheckrepresentative nearest you, call 715-359-6171 orvisit our Web site at www.greenheck.comRDU, RBU, RBUMO models areListed for electrical (UL/cUL 705)File No. E40001RBUMO model is Listed forEmergency Smoke Control SystemsFile No. MH17511
Table of ContentsConstruction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5High Temperature Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Model Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Basics of Fan Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Dimensional DataRBU - Belt Drive - Motor in airstream . . . . . . . . . . . . . . . . . . 10Sizes 20-60 Capacities to 64,000 cfm and 1.0 in. wgRBUMO - Belt Drive - Motor out of airstream . . . . . . . . . . . . 10Sizes 20-60 Capacities to 62,000 cfm and 1.0 in. wgRDU - Direct Drive Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Sizes 18-48 Capacities to 43,000 cfm and 0.75 in. wgRGU - Gravity Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Construction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13RGU Gravity Ventilator Features and Performance . . . . . . . 13Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Model Number Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Performance Direct Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17Performance Belt Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-27Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28World Class ManufacturingGreenheck’s skilled production workers use cost-effectivemachines and unique dies designed and built by our ownengineers to add innovative features and greater strength toour upblast propeller fans. Our advanced manufacturingprocesses and quality control procedures always ensure thehighest product quality. And just to be sure you get the peaceof-mind you expect when you specify Greenheck, our assemblyinspectors test run and monitor every fan before it leaves thefactory. Results of these tests are kept in permanent recordsfor future reference.3
Construction Features1. Windband is heavy–gauge galvanized (orpainted) steel construction with bolted seams.Edges are reinforced for added strength andhave built–in damper stops.Model RBU (shown) construction features are standardon all models in this catalog.1102. Curb Caps are constructed of galvanized steelin sizes 18-48. Sizes 54 and 60 are constructedof painted steel. Curb caps include an integralventuri inlet and prepunched mounting holes.23. Drive Frames are die formed, galvanizedstructural steel to provide a rigid platform formotors, shafts, bearings and drives.4. Adjustable Motor Plate39487655. Drive Assembly belts, pulleys and keys areoversized 150% of driven horsepower.6. Variable Pitch Motor Pulley allows for fan speedadjustments of 10-15%. Size 42 and larger havefixed pulleys.7. Belts are static–resistant and oil free8. Bearings: 100% factory tested and designedspecifically for air handling applications with aminimum L10 life in excess of 100,000 hours(L 50 life of 500,000 hours).119. Fan Shaft is precisely sized, ground andpolished so the first critical speed is at least25% over the maximum operating speed. Wherethe shaft makes contact with bearings, closetolerances result in longer bearing life.1210. Fasteners are corrosion–resistant.11. Aluminum Butterfly Dampers provide weatherprotection and prevent backdrafts when thefan is not in operation. Standard damper bladeconstruction is aluminum with galvanized steelconstruction optional.12. Fan Base and motor cover is constructed ofgalvanized steel.1313. Windband Mounting Brackets are designed toalso be used as Lifting Lugs for ease when liftingunit to the roof deck.Service FeaturesRemovable Windband. By removing the bolts fromthe four windband mounting brackets the windbandcan be easily removed. With the windbandremoved, access to the fan can be gained throughthe butterfly dampers.Motor out of Airstream, model RBUMO, simplifiesinspection and servicing with the “motor out of theairstream” design.Removable Motor Cover enables quick and easyaccess to the motor, belt and drives from theroof deck.4
Accessories1. Outlet Screen is constructed of heavy–gauge steelmesh and is available to shield the fan discharge anddampers from debris. Outlet screens cannot be usedin conjunction with motorized butterfly dampers.12. Steel Butterfly Dampers are for installations wherestandard aluminum construction is not desired. Referto notes on performance pages for the minimumairflow volumes to open dampers.23. Magnetic Damper Latches are available to minimizedamper flutter when the fan is not in operation.4. Fusible Link Damper Lifters are available toautomatically open the butterfly dampers when theair temperature below the damper blades exceeds165 F (74 C). Fusible links for higher temperaturesare also available. The damper blades are held opento provide smoke and heat relief with no electricalpower required.3455. Roof Curbs are available to reduce installation timeand costs by ensuring compatibility between thefan, the curb and the roof opening. All curbsare lined with fiberglass insulation to preventcondensation and reduce sound levels. SeeGreenheck’s roof curb catalog for complete details.Aluminum Propellers are available for spark resistance.Extended Lube Lines for belt driven fans are lubricationlines with grease fittings that extend from the shaftbearings to the exterior of the fan base. Extendedlube lines allow for bearing lubrication from therooftop without disassembling the fan.Inlet Guards on model RBUMO fans areavailable with protective guards for mountingto the fan inlet. For models RBU and RDU,protective guards are available whenmounted within a base extension.NOTE: When an inlet guard is not orderedwith the fan, it should be providedby the installer.RBUMOInlet GuardMotorized Butterfly Dampers are available forlow CFM applications that insufficiently open thebutterfly dampers, as with 2-speed motors at lowspeed. They also assure that the dampers are securelyclosed when the fan is not operating.RBUInlet GuardPainted Exteriors and protective coatings are offeredto protect the fan from harsh atmospheres wheregalvanized steel is not sufficient. Decorative paintsare available in a variety of colors to match existingbuilding fixtures.Belt Cover or Drive Cover (Belt Tube) is available onmodel RBUMO to isolate the drive components fromairstream contaminants.5
High Temperature OptionsHigh Temperature Option500 F (260 C) for a minimum of 4 hours1000 F (538 C) for a minimum of 15 minutesThis construction meets specifications for IRIrequirements of 500 F (260 C) air for a minimum of4 hours and the SBCCI “Standard Fire PreventionCode” requirements of 1000 F (538 C) for a minimumof 15 minutes in emergency smoke removalapplications. In addition, this construction exceedsBritish Standards 7346 Class B (250ºC for 2 hours),Class C (300 C for 30 minutes) and Class D (300 Cfor 1 hour) temperature requirements. Temperatureratings are tested in accordance to UL smokecontrol systems.High Temperature Option UL Listed(Construction Level 2 and Level 3 only)500 F (260 C) for a minimum of 4 hours1000 F (538 C) for a minimum of 15 minutesSnow Load Test for butterfly dampers in UL-793This construction meets specifications for UL Listed“Power Ventilators for Smoke Control Systems”.This includes the IRI requirements of 500 F for aminimum of 4 hours, the SBCCI “Standard FirePrevention Code” requirements of 1000 F for aminimum of 15 minutes and the Snow Load Testfor butterfly dampers (10 pounds of lifting persquare foot) in UL-793. In addition, this constructionexceeds British Standards 7346 Class B (250 C for2 hours), Class C (300 C for 30 minutes) and Class D(300 C for 1 hour) temperature requirements.NOTE: Model RBUMO accommodates airstreamtemperatures up to 180 F (82 C) without hightemperature features. For continuous hightemperature operation from 180 F (82 C) to500 F (260 C), use Greenheck model TAUB withits corresponding high temperature option.Emergency Smoke RemovalGreenheck model RBUMO can be equippedfor emergency smoke removal applications byspecifying a high temperature option. The tableshows the construction features included with hightemperature options that enable the exhaust of heatand smoke at 500 F (260 C) for a minimum of4 hours or 1000 F (538 C) for a minimum of15 minutes.6High temperature testing was conducted atGreenheck’s research and design facility withairstream temperatures in excess of 1000 F (538 C).Temperatures were monitored at the followingcritical locations throughout the tests: bearings,bearing compartment, belt tube, motor, motorcompartment, airstream and fan housing.Features165 F (74ºC) Fusible linkdamper liftersHighTemperatureOption 165 F (74ºC) Fusible link damper lifters that will lift 10 poundsper square footBelt tube with heat shieldDual drivesHigh temperature bearingsUL label(Power ventilators forsmoke control systems)* Construction Level 2 and Level 3 onlyHighTemperatureOption withUL/cUL-793*
ElectricalWiringDisconnect SwitchesWiring from the motor to the disconnect boxis provided when a fan is ordered with amounted disconnect.Toggle type and heavy–duty disconnect switchesare available for positive electrical shut-offand safety when servicing fans. The followingswitches are available to meet individual electricalrequirements and can be factory mounted orshipped loose for field mounting.UL/cUL 705All model RBU and selected model RDU fans withTE (Totally Enclosed) motors are available with theUL/cUL 705 listing for electrical. The UL/cUL 705listing is available on Model RBUMO fans with ODP(Open Drip Proof) and TE motors.Heavy DutyToggleRDU, RBU, RBUMO models are Listedfor electrical (UL/cUL 705)NEMA-4NEMA-7 & 9File No. E40001Motor SelectionMotor frame size, enclosure type and fan size limitthe available standard motor selections. Consultyour local Greenheck representative or the factoryfor motor availability.NEMA-3R & 4NEMA-3R NEMA-3RRain-Resistant NEMA-4Watertight NEMA-3R &NEMA-4Heavy-Duty NEMA-7 & 9for Class 1 andClass 2 hazardouslocations.Disconnect Wiring OptionsNote: Conduit and wiring by othersWire oninside of unitDisconnect InstallationRBU with NEMA-3RWire onoutside of unitDisconnect InstallationRBUMO with NEMA-3RNot recommended for high temperature exhaustDisconnect InstallationRBUMO with NEMA-3RNo TrayRBU on a GPI Curb with NEMA-3RRBUMO with GPI and NEMA-3RRBUMO with GPI and NEMA-3R7
Model ComparisonDirect Drive Fan SelectionThese models are designed and constructed for applications with static pressure ranges up to 1 inch wg.RDU models are available with cast aluminum steel blades. For low sound applications, it is best to selectthe largest fan with the lowest RPM to meet the performance requirements. This ensures the tip speedswill be as low as possible.Cast aluminumairfoil bladesModelPerformance PagesSize RangeDiameterRDUpages 16-17(508 to 1372 mm)18 to 48 inchPerformanceUp to 43,500 cfm(78,155 m3/hr) andup to 1 inch wg (249 Pa)PropellersLevel 3Level 3Construction LevelsBelt Drive Fan Selection Propeller Typespages18-20 and 23-2520 to 36 inchLevel 2Dual thicknessgalvanized steel bladesriveted to the hubpages 18-27Fully welded andgusseted steel bladespages 18-27(508 to 1372 mm)20 to 54 inch(508 to 1524 mm)24 to 60 inch(610 to 1829 mm)Up to 16,500 cfm(50,970 m3/hr) and up to5/8 inch wg (156 Pa)PropellersLevel 1Level 1Galvanized steel bladesriveted to the hubPerformanceUp to 46,000 cfmLevel 2Size RangediameterConstruction LevelsUp to 64,000 cfmLevel 3ModelPerformance PagesLevel 3Application requirements for sound and static pressure determine propeller type. Propellers are availablein fabricated steel, fabricated aluminum or cast aluminum.(90,048 m3/hr) and up to3/4 inch wg (190 Pa)(149,513 m3/hr) and up to1 inch wg (249 Pa)Belt Drive Blade Designs8H Type Propeller:L Type Propeller:Straight, moderately pitched blade.It is designed for applications wherestatic pressures are above 0.5 inchwg (125 Pa). These propellers typicallyrun at higher RPMs and generateslightly higher sound levels than the“L” propellers.Swept, steeply pitched blade design.These propellers typically run atlower RPMs and generate low soundlevels making them the best selectionfor sound critical applications orapplications requiring the bestcombination of both air and soundperformance. Typically used whenthe static pressure is 0.5 inch wg(125 Pa) or less.
Basics of Fan SelectionThe first consideration in any fan selection is theamount of air to be moved and the resistance tothis air movement. With specific performanceand application criteria in mind, propeller fanselections typically require decisions based onthe following criteria.Belt Drive vs. Direct DriveBelt drive fans offer the ability to adjust fan speedfor system balancing if necessary. They also offermore flexibility in speeds and motor selections. Ina cost comparison, belt drive fans are typically lesscostly than comparable size direct drive fans withlow speed motors.Direct drive fans are often preferred for jobs wheremaintenance access is difficult. Maintenance costsare generally lower with direct drive fans since thereare no belts or bearings to replace and no pulleysto adjust.Larger Fans vs. Smaller FansIn most applications, several fans may meet thespecified airflow and pressure requirements. Justas larger fans tend to turn slower and generateless sound, they also tend to have higher initialcosts but lower operating costs. Smaller fans havemore stable performance curves, lower initial costs,higher sound levels and higher operating costsbecause of their higher speeds.Low Sound vs. High Static PressureFans selected for high static pressures run at higherspeeds and produce higher tip speeds resulting inhigher sound levels. Conversely, in low pressureapplications fans generally run at lower speeds,produce lower sound levels and are recommendedfor sound sensitive applications.How Accessories Affect Static PressureAll accessory losses must be accounted for whencalculating the static pressure load for a fan. Thismeans upblast propeller roof fans can be specifiedwith low pressure capabilities, below 3/8 inch wg(93 Pa), when used in conjunction with properlyapplied accessories (as within our installationrecommendations).When fans are over-specified to compensate forlosses that do not actually exist, both cost andsound levels can be higher than necessary.This most commonly results from larger motorsand higher tip speeds.Motor Service FactorUpblast roof fan motors (except for the modelRBUMO) are cooled by the airstream. With anuninterrupted flow of cooling air, motors may beoperated in their service factor range (up to 20%above the motor nameplate horsepower) withoutdamage due to overheating. Lesser overloadsare recommended for applications using totallyenclosed or explosion resistant motors.Belt drive performance tables in this catalog showRPM selections for each propeller type (L or H) at agiven motor horsepower. The first selection is a 1.0motor service factor. The second speed selection isat 1.2 motor service factor. Direct drive performancetables show Bhp levels with motor service factorsranging up to 1.2. When a selection using the motorservice factor is not desirable for the application,specify the next higher motor horsepower.Propeller Fan Rotation GuideThe propeller blade should cup and throw the air when rotating in the correct rotation as shown below.9
Dimensional DataLevel 1, 2 & 3 Models RBU & RBUMOAABBFDDCCCurbCapECurbCapModel RBUAModel RBU - Belt DriveModel SizeAA2024303642485460271 4 (692)311 8 (791)373 8 (999)431 2 (1105)495 6 (1245)56 D(1422)625 8 (1591)683 4 8)(965)(1016)(1143)(1219)AA1, 215 (381)151 2 (394)151 2 (394)B163 4 (425)319 8 (492)193 8 (492)191 4 (489)211 4 (540)3—B163 4 (425)316 4 (425)3B16 4 (425)237 8 (606)D237 8 (606)F267C 8 (683)C27 (686)EFCurb CapI.D.231 4 (591)27 3 8 (695)343 4 (883)407 8 (1038)463 4 (1187)523 4 (1340)611 4 (1556)661 4 (1683)91 32 (229)B97 16 (240)79 8 (251)97 8 (251)113 4 (298)113 4 (298)111 2 (292)C15 (381)30 (762)34 (864)40 (1016)46 (1168)52 (13216)58 (1473)66 1 2 (1689)72 1 2 (1842)D13 413 413 413 413 413 413 413 dRoof Opening*261 2 (673)301 2 (775)361 2 (927)421 2 (1080)481 2 (1232)541 2 (1384)63 (1600)69 (1753)Curb determined by motor use. All dimensions are in inches (millimeters). **Dimension may vary depending on motor.*Minimum distance—actual del RBUMOCurbCapModel RBUMO - Belt DriveModel Size2024303642485460A271 4 (692)311 8 (791)373 8 (949)431 2 (1105)495 6 (1245)56 (1422)625 8 (1591)683 4 (1746) B431 2 (1105)455 6 (1143)513 4 (1314)55 (1397)595 8 (60)635 6 (1600)705 8 (1794)75 (1905)**C193 4 (502)171 2 (438)191 2 (495)191 2 (495)195 8 (498)213 4 (552)223 4 (578)23 (584)D2 1 4 (57)2 1 4 (57)2 1 4 (57)2 1 4 (57)2 1 4 (57)2 1 4 (57)2 1 4 (57)2 1 4 (57)Curb Cap I.D.291 2 (749)331 2 (851)391 2 (1003)451 2 (1156)511 2 (1308)571 2 (1461)66 (1676)72 (1829)MaximumRecommendedRoof Opening*26 (660)30 (762)36 (914)42 (1067)48 (1219)54 (1372)621 2 (1588)681 2 (1740)*Minimum distance—actual distance determined by motor use. All dimensions shown in inches (millimeters). Sizes greater than 36 with High Temp Optionwill be 5 inches larger. All dimensions are in inches (millimeters). ** Dimension may vary depending on motor.10
Dimensional DataLevel 2 & 3 Models RDU & RGUAABBDFDCCCurbCapModel RDUECurbCapModel RDU - Direct DriveModel SizeAB**CDCurb Cap I.D.1820243036424825 (635)271 4 (692)311 8 (791)373 8 (949)431 2 (1105)495 6 (1245)56 (1422)22 (559)24 (610)26 (660)30 (762)33 (838)38 (965)40 (1016)83 5 (203)93 4 (235)131 2 (343)131 8 (333)1215 16 (329)181 2 (470)181 2 (470)13 4 (44)13 4 (44)13 4 (44)13 4 (44)13 4 (44)13 4 (44)13 4 (44)28 (711)30 (762)34 (864)40 (1016)46 (4468)52 (1321)58 (1473)ABMaximumRecommendedARoof Opening*241 2 (622)261 2 (673)301 2 (775)361 2 (927)421 2 (1080)481 2 (1232)541 2 (1384)B*Minimum distance—actual distance determined by motor use. All dimensions shown in inches (millimeters). ** Dimension may vary depending on motor.CAADAACurbCapDCurbCapCCBBModel RGUEEDDCurbCurbCapCapRGU without curb capRGU with curb capModel RGUModel SizeABCD18202430364248546025 (635 mm)271 4 (692 mm)131 8 (791 mm)337 8 (949 mm)143 2 (1105 mm)748 8 (1241 mm)56 (1422 mm)562 8 (1591 mm)368 4 (1746 mm)22 (559 mm)24 (610 mm)26 (660 mm)30 (762 mm)33 (838 mm)38 (965 mm)40 (1016 mm)45 (1143 mm)48 (1219 mm)201 4 (514 mm)211 4 (540 mm)24 (609 mm)263 4 (679 mm)291 4 (743 mm)341 4 (870 mm)341 4 (870 mm)401 4 (1022 mm)143 8 (1095 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)13 4 (44 mm)ECurb Cap18 1 2 (470 mm)28 (711 mm)20 1 2 (521 mm)30 (762 mm)24 1 2 (622 mm)34 (864 mm)530 8 (778 mm)40 (1016 mm)536 8 (930 mm)46 (1168 mm)42 3 4 (1086 mm) 52 (1321 mm)48 1 2 (1232 mm) 58 (1473 mm)55 (1397 mm) 66 1 2 (1689 mm)61 (1549 mm) 721 2 (1842 mm)MaximumRecommendedRoof Opening*22 (559 mm)24 (610 mm)28 (711 mm)34 (864 mm)40 (1016 mm)46 (1168 mm)52 (1321 mm)60 (1524 mm)66 (1676 mm)ApproximateWeight (lb) (kg)120 (54 kg)140 (64 kg)160 (73 kg)175 (79 kg)190 (86 kg)245 (111 kg)295 (114 kg)450 (204 kg)600 (272 kg)*Minimum distance—actual distance determined by motor use. All dimensions shown in inches (millimeters).11
Construction FeaturesLEVEL 1Models RBU & RBUMOWindband Curb CapFan Size(galv)(galv)202430362020202016161616Material GaugesButterfly rive FrameHousing (galv) Channel1818181814141111Belt DriveShaft Size3 43 43 43 4Max MotorFrame Size565656145TApproximateWeight (lbs.)RBU210232284321RBUMO285321364424Approximate weight does not include accessories.Housing - Galvanized steel windband and curb cap.Damper blades constructed of aluminum(galvanized optional). Motor plates are adjustable for belt tensioning.Propeller - Galvanized steel, riveted blades. Motor sheaves are adjustable forsystem balancing.Bearings - Stamped steel pillow blocks. Drive belts are static free. Fan shafts are precision turned, ground andpolished steel. Motors are heavy-duty ball bearing type. Pillow block bearings are sized for a L10 life inexcess of 100,000 hours (L50 life of 500,000 hours).LEVEL 2Windband Curb CapFan 16141414Material GaugesButterfly 4200.064180.080 Drives are sized for a minimum of 150% ofdriven horsepower. Fasteners are corrosion-resistant.RBUMODrive FrameHousing (galv)Channel1818181818181614141111111111Belt DriveShaft SizeMax MotorFrame Size 43 41111 411 411 4145T145T184T184T184T184T184T3ApproximateWeight 662824Approximate weight does not include accessories.Housing - Windbands are of galvanized steel. Curbcap galvanized through size 48. Size 54 curb capis painted steel. Damper blades constructed ofaluminum (galvanized optional).Propeller - Reinforced galvanized steel,riveted blades.Bearings - Cast iron pillow block bearings withgrease fittings. Fan shafts are precision turned, ground andpolished steel.12 Pillow block bearings are sized for a L10 life inexcess of 100,000 hours (L50 life of 500,000 hours). Motor plates are adjustable for belt tensioning. Drives are sized for a minimum of 150% ofdriven horsepower. Motor sheaves are adjustable for system balancing(sizes 42 and larger are fixed pitch). Drive belts are static free. Motors are heavy-duty ball bearing type. Fasteners are corrosion-resistant.
Construction FeaturesModels RBU, RBUMO, RDU & RGUMaterial GaugesDrive FrameChannelLEVEL 3Butterfly Damper RBUMOFan Windband Curb .0800.080Belt 1411111111111112121111888––––3 4111 411 211 211 213 4Max MotorFrame eWeight* �*Approximate weight does not include accessories.Housing - Windbands are of galvanized steel. Curbcap galvanized through size 48. Size 54 and 60 curbcaps are painted steel. Damper blades constructedof aluminum (galvanized optional). Pillow block bearings are sized for a L10 life inexcess of 100,000 hours (L50 life of 500,000 hours) Motor plates are adjustable for belt tensioning. Drives are sized for a minimum of 150% ofdriven horsepower.Propeller - RBU & RBUMO - Heavy-duty, welded,reinforced, steel blades. RDU - Heavy-duty, castaluminum blades. All with keyed hubs. Motor sheaves are adjustable for systembalancing(sizes 42 and larger are fixed pitch).Bearings - Cast iron pillow block bearings withgrease fittings (on RBU and RBUMO). Drive belts are static free. Motors are heavy-duty ball bearing type. Fan shafts are precision turned, ground andpolished steel. Fasteners are corrosion-resistant.Model RGU, Upblast VentilatorStandard construction is heavy-gaugegalvanized steel. Nine sizes are available,corresponding to powered units insizes 18-60.Fusible link damper lifters are available toallow RGU units to function as heat andsmoke relief 675075001000012500Volume (cfm)RGU Gravity Performance 36 - 600.7RGU-360.6Static Pressure (in. 0RGU-200Minimum CFM Required to Open DampersModel Size182024303642485460RGU-180.6Static Pressure (in. wg)Model RGU is designed for use as aweatherproof outlet on vertical highvelocity exhaust systems and can befurnished without the curb cap formounting directly on round stacks.RGU Gravity Performance 18 - 300.7RGU-42RGU-48 RGU-54 0 20000 25000Volume (cfm)300004000045000500005750013
Selection GuideUsing The Performance TableShown below is a portion of a typical performancetable used in this catalog. Performance data shown,offers the best selections for each propeller type(“L” or “H”) relative to sound, RPM andstatic pressure.Model NumberMotor Fan Max *SonesHP RPM BHP0.00Level 1 PerformanceRBU-1L20-4“H” typeHigh -1L20-5RBU-1H20-5Shows level of constructionbased on fan RPM &motor frame size. SeePerformance Charts.14CFM / Static Pressure in Inches WG0.10Max RPM L - 1085 H - 12211/4“L” typeLow pressurepropellerMost sidewall applications can be met with the “L”type propeller. When using the performance tables,look first at the “L” selections, because they offerthe lowest speed and sound x Motor Frame Size - 63342324430062727239815888733931039 1 0.5017.05222467545664461418137471085 0.6017.955505021491948174621426937121107 1221 Note that each max.BHP is cataloged ata 1.0 and 1.2 servicefactor. See page 9.Optimum selectionrange for the “L”type propeller.1.00TS RPM x 5.235304CFM values shownin black are themost efficientselections. Valuesshown in gray arenot recommended.Optimum selectionrange for the “H”type propeller.
Model Number CodesDirect DriveModel Number Code - Direct DriveThe model number code is designed to completely identify the fan.A detailed explanation of the RDU model number is shown below.RDU - 36 - 618 - B 30Direct DriveUpblast PropellerRoof FanFan SizeNumber of BladesBlade PitchMotor RPMABCF 1750 1160 860 680Motor HP4 ¼10 130 33 ¹/³5 ½15 1½50 520 275 7½7 ¾All pro
Greenheck upblast propeller fans are designed to discharge contaminants up and away from the building for most commercial jobs and many industrial applications. These roof exhaust fans . RGU Gravity Vent
or duty level, all Greenheck Upblast Propeller Roof Fans are built to perform with the same high standards of reliability and durability. Greenheck subjects these products to extensive life testing, assuring you that the fans will provide years of reliable performance. Performan
Fan installation with accessories 9 Technical description 10 Installation types 11 Axial fans AXC, AXCP, AXR 12 Axial fans AXCPV 18 Smoke extract axial fans AXC (B), AXR (B) 22 Smoke extract axial fans AXC (F), AXR (F) 24 Thermo axial fans AXCBF 26 Explosion proof axial fans AXC-EX, AXCBF-EX 30 Jet fans for Car Park Ventilation 36 Tunnel fans 37
the propeller, pressure developed by the propeller, stresses, deformations and strains developed within the propeller when subjected to a thrust. The modifications made to the propeller in terms of material, number of blades and rake angles suggested which variant of the propeller is best suited for different requirements of the Ship.
GREEN- CMYK C-54 M-0 Y-100 K-0 RGB R-130 G-195 B-65 BLUE- CMYK C-100 M-56 Y-0 K-18 RGB R-0 G-90 B-156 . 3 Models CUE, CUBE, USGF Centrifugal Exhaust Fans Roof Upblast and Sidewall When you buy a Greenheck roof upblast or sidewall exhaust fan, you’ll receive a fan with the industry’s best performance and durability for general clean air, .
Aircraft propeller is sometimes colloquially known as an air screw propeller The present work is directed towards the study of composite aircraft propeller working and its terminology, simulation and flow simulation of composite aircraft propeller has been performed. To analyze the composi
Removal and Installation 0 Put match marks on flanges and separate propeller shaft from differential carrier. SPD103 0 Draw out propeller shaft from transmission and plug up rear end of transmission rear extension housing. Transmission 7 SPD359 Inspection Inspect propeller shaft runout. If runout exceeds specifications, replace propeller shaft .
Hartzell Propeller Inc. Service Bulletin No. HC-SB-61-272, “PROPELLER - PROPELLER INSTALLATION”, Issued: January 17/05 or subsequent revision; Hartzell Propeller Inc. Service Letter No. HC-SL-61-239, “PROPELLER - SLIP RING SPLIT MOUNTING PLATE INSPECTION A
Catalog Description: An elementary introduction to logical thinking. One-third of the course is devoted to problems of language and semantics. Section Description: The study of logic attunes us to the structure of our thoughts and judgments about the world. The brick and mortar of this structure is argument and reason. We will learn the rules of constructing good arguments, better understand .
