Plenum Fans Model HPA Direct Drive October 2012
Quiet & Efficient HPA Plenum Fans Greenheck s modular plenum fan, model HPA, is designed and engineered to provide superior performance and reliability in commercial or industrial applications. Greenheck s products are manufactured with state of the art laser, forming, spinning and welding equipment and endure quality control testing to ensure trouble free start-up. The HPA can be used as a single fan in a sound critical application or in parallel to construct a fan array system. The HPA features a modular design with a structural housing that allows multiple modules to stack side-by-side and on top of one another to form an array. Typical applications include: Packaged air handlers Built-up air handlers Custom air handlers General supply and return systems Retrofit projects Fan Arrays When used in a fan array, the HPA fan offers several advantages over a standard (large) plenum fan: Multiple fans stacked in parallel offer uniform flow through an air handling unit. Multiple smaller fans running at faster speeds produce higher frequency noise that is easily absorbed by the sound attenuating housing. Large fans running at slower speeds produce low frequency noise that is hard to attenuate. Fan arrays have a shorter axial length, minimizing the footprint of the fan space. Fans can be sized for redundancy, so if one fans goes down, the remaining fans can be sped up to maintain the design airflow. Retrofit Applications In addition to the new construction market, the HPA is a great solution for replacement or retrofit projects. The small, lightweight design makes the HPA easy to move through doors and elevators compared to one large fan. The modular construction of the HPA makes installation easy compared to field assembling a large fan with custom split housings, reducing labor costs. Utilizing multiple fans with smaller, lighter motors eliminates the need for cranes and lifting equipment during installation. The number and size of fans can be optimized to deliver the required air flow and fit in the existing location. 2
HPA Advantages Versatility The HPA is available in 10 wheel sizes (15-36) and 3 different housing options making it the most versatile modular plenum fan on the market. Available with partial wheel widths and variable frequency drive (VFD) rated motors, the user can select the best fan for optimum performance and efficiency. Internal Isolation The fan assembly which consists of the wheel, inlet cone, motor and frame is completely isolated from the sound attenuating housing with built-in vibration isolators as a standard feature. This allows the units to be stacked on top of each other and eliminates the need for vibration isolators between each unit, making installation clean and easy. Motors for use with a Variable Frequency Drive (VFD) All motors meet NEMA Premium Efficiencies and are VFD compatible in construction. Quality Assurance All plenum fans receive a run test at the design speed in the factory after final assembly. HPA fans are subjected to a complete vibration analysis in three planes. The recorded vibration levels must meet the requirements of BV-4 AMCA/ANSI standard 204-05 (Balance Quality and Vibration Levels for Fans). A permanent record of this test is kept on file at the factory for future reference. A copy of the test report is available upon request. AMCA Air and Sound Certification AMCA certification assures that all Greenheck HPA plenum fans will perform as cataloged. Fans are rated for air performance as well as sound levels (inlet and outlet). Plenum Model Number Code: Model Housed Plenum Array Wheel Size 15-36 HPA - 18-95 - S - B75 Motor HP 150 = 15 200 = 20 250 = 25 300 = 30 Motor RPMs A = 1770 B = 1170 M = 3500 400 = 40 500 = 50 600 = 60 750 = 75 Greenheck Fan Corporation certifies that the model HPA shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program. Wheel Width 50-100 Housing Size C = Compact S = Standard (Default) L = Large 3
Standard Construction and Features Sound Attenuating Housing The fan assembly is mounted inside a sound attenuating housing. The housing has a perforated galvanized inner liner that directs sound waves into two inches of sound absorbing fiberglass between the inner liner and the outer shell. The result is a reduction of sound power levels. Galvanized Construction The fan assembly and sound attenuating housing are constructed of laser cut and die-formed heavy-gauge galvanized material. Internal Vibration Isolation Neoprene isolators mounted between the fan assembly and the sound attenuating housing reduce vibration, eliminating the need for isolators and gaskets between modules making installation clean and easy. Flexible gasket material between the inlet cone and sound attenuating housing creates an airtight seal. Housing Options Three different sound attenuating housing sizes makes the sizing the HPA extremely flexible. The standard housing is sized for optimum performance versus footprint. The compact housing offers a smaller footprint for applications with space constraints and the large housing offers increased air performance for higher efficiencies. Redundancy Fan arrays can be sized so that if a fan becomes inoperable, the remaining fans can be sped up to maintain the design airflow until the fan can be repaired. 4
Low Maintenance The HPA is a direct drive fan so there are no belts, sheaves or fan bearings to tension, replace or lubricate. Lubricating the motor bearings is the only maintenance required. Modular Construction The lightweight design makes the HPA easy to transport and stack. There are no fasteners on the external casing, making it clean and easy to install. Inlet and outlet flanges makes connecting adjacent units quick and easy. 12-bladed Aluminum Airfoil Wheel The HPA features a high efficiency, low sound 12-blade airfoil wheel. The aluminum wheel reduces startup torque requirements, as well as shaft loading during operation. The airfoil blades are constructed of 6063-T5 aluminum extrusions to improve efficiency and reduce vibration. All wheels are balanced to grade G6.3 per ANSI S2.19. Size 18 Performance Criteria of 5,500 CFM @ 5 in. wg Wheel Type RPM Brake HP Motor HP Size Static Eff. L w A 9-Blade 2607 7.76 10 56% 96 12-Blade 2400 6.37 7.5 68% 90 5
HPA Optional Construction & Accessories Partial Width Wheels Wheels are available from 50% to 100% for optimum performance and flexibility. Inlet Guard Low-pressure loss guard which protects inlet of the fan. Outlet Guard Removable outlet guard protects the outlet of the fan. Inlet Damper An EM-32 backdraft damper installed on each fan will prevent backflow of air if a fan is shut down or out of service. Blank-off Panel A blank-off panel is cost-effective way to prevent backflow of air through a fan that is shut down and must be manually installed on the inlet of the fan when the fan is down. One blank-off panel would be used per fan array instead of a backdraft damper on each fan. Additionally there is no pressure drop associated with the blank-off panel since it isn t installed until the fan is down. Sure-Aire Flow Monitoring System Sure-Aire provides the real-time flow measurement for use in building automation systems. The Sure-Aire s non-invasive design is accurate to within 3% and does not impact fan performance. Shaft Grounding Rings Factory-installed shaft grounding rings ensure motor bearing protection from variable frequency drive (VFD) induced shaft currents. Extended Lube Lines All motors requiring lubrication will come with lubrication lines extended to the outside of the sound attenuating housing. This allows for easy motor bearing lubrication without having to remove guards or reach inside the housing. Inlet Guard Inlet Damper Blank-off Panel Housing Flexibility The HPA features three housing sizes per fan: Standard, Compact and Large for additional flexibility. Standard Compact Large Sized for optimum performance versus footprint 6 Offers a smaller footprint than the standard housing for applications with space limitations Offers improved air performance for applications that require high efficiency
Performance and Dimensional Data HPA Performance (Single Fan) For multiple fans in an array, multiply the single fan performance by the number of fans to get the total CFM 16 14 12 Static Pressure (in. wg) 10 8 6 4 2 0 Performance Range 15 16 18 20 22 24 27 30 1770 RPM 1 10 100 1000 36 33 Volume (cfm x 100) Dimensional Data Wheel Size W (in.) H (in.) Standard Housing D (in.) Max Stacked Modules Max Motor Frame LMD (lbs.) 15 29.000 29.000 31.000 4 213T 215 16 31.500 31.500 35.875 4 215T 250 18 34.375 34.375 37.125 3 254T 290 H 20 37.250 37.250 38.500 3 254T 340 22 41.000 41.000 41.125 3 256T 380 24 44.750 44.750 42.625 3 284T 425 27 48.875 48.875 46.500 2 286T 680 D W 30 53.750 53.750 47.875 2 324T 820 33 58.750 58.750 50.000 2 326T 960 36 64.500 64.500 50.000 2 326T 1100 7
Design and Selection Support Enjoy Greenheck s extraordinary service, before, during and after the sale. Greenheck offers added value to our wide selection of top performing, energy-efficient products by providing several unique Greenheck service programs. Our Quick Delivery Program ensures shipment of our in-stock products within 24 hours of placing your order. Our Quick Build made-to-order products can be produced in 1-3-5-10- or 15-day production cycles, depending upon their complexity. Greenheck s free Computer Aided Product Selection program (CAPS), rated by many as the best in the industry, helps you conveniently and efficiently select the right products for the challenge at hand. Greenheck has been Green for a long time! Our energy-saving products and ongoing corporate commitment to sustainability can help you qualify for LEED credits. Our 3D service allows you to download, at no charge, easy-to-use AutoDesk Revit 3D drawings for many of our ventilation products. Find out more about these special Greenheck services at greenheck.com To-Scale Drawings and Fan Specifications To-scale CAD drawings along with detailed centrifugal specifications can be found online at www.greenheck.com or within our Computer Aided Product Selection program (CAPS). Building Value in Air Greenheck delivers value to mechanical engineers by helping them solve virtually any air quality challenges their clients face with a comprehensive selection of top quality, innovative airrelated equipment. We offer extra value to contractors by providing easy-to-install, competitively priced, reliable products that arrive on time. And building owners and occupants value the energy efficiency, low maintenance and quiet dependable operation they experience long after the construction project ends. Our Commitment As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under Warranties. Prepared to Support Green Building Efforts P.O. Box 410 Schofield, WI 54476-0410 Phone (715) 359-6171 greenheck.com 0O.CVI.1027 R1 10-2012 Copyright 2012 Greenheck Fan Corp.