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Mixed Flow Fans
Belt and Direct Drive
Models QEI-L, QEI, QEID
May
2012
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Quiet & Efficient, Inline Model QEI-L – Belt Drive Mixed Flow Fans Mixed flow inline fans can be used for supply, exhaust, • 11 sizes available (12 thru 36) or return air installations. Our patented design excels • Volume Range: 700 - 40,000 cfm 3 in commercial applications where low sound is critical. (1190 - 67,960 m /hr) In addition, Greenheck’s mixed flow fans are more • Static Pressure: Up to 5 in. wg (1245 Pa) efficient than comparably sized tubular centrifugal and vane axial
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Standard Construction Housing Slip-Fit Duct Connection (QEI-I/II & QEID) Tubular housings are constructed of welded steel to Inlets and outlets are designed with extended collars eliminate air leakage. Integral straightening vanes are for slip-fit duct connections as standard. QEI-L is constructed from steel and welded into place. flanged as standard. Companion flanges can be ordered for slip fit connections. Wheel – Mixed Flow Adjustable Motor Bases (Belt Drive) Fabricated wheels are const
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Value Added Features Quality Assurance Test Before shipment, all Greenheck mixed flow fans are tested at the design speed after final assembly. QEI-L fans are checked for amp draw and the levels are recorded. QEI-I/II and QEID fans are subjected to a complete vibration analysis. The maximum allowable vibration on a QEI-I/II at the fan bearings is 0.15 in/sec. peak velocity for the specified RPM. QEID maximum vibration is 0.08 in/sec. peak velocity on the fan housing for the specified RPM. A
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Inlet and Outlet Sound Power Levels All Greenheck mixed flow fans have AMCA licensed sound power levels for both the fan inlet and outlet. Application and installation determines which sound power reading (inlet, outlet, or both) is critical. The differences between the generated sound from the inlet and outlet are important and noticeable. AMCA licensed inlet and outlet sound power data provides complete sound information to select a fan based on the acoustical requirements. For additional
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Design & Performance Mixed Flow: Axial/Centrifugal Hybrid Centrifugal A mixed flow wheel is a hybrid between an axial propeller and a centrifugal wheel. The result is a design that combines the best axial Mixed Flow and centrifugal properties: highly efficient air movement, increased pressure capabilities, extremely low sound levels, and a steep fan Axial performance curve. To further enhance the fan’s performance, straightening vanes are incorporated in the housing. These serve to convert
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Wheel Characteristics Belt Drive: Fan Class Class I and II fans have different wheel designs with different performance characteristics. Class I mixed flow wheels are optimized for performances involving low pressures and high volumes. Class II wheels are designed for a steeper fan curve with higher pressure capabilities. This is illustrated in the graph with the two different class wheels plotted at identical fan RPMs. When selecting a mixed flow fan, it cannot be assumed that moving into a C
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Optional Features Sure-Aire™ The Sure-Aire™ flow monitoring system measures fan flow within a 3% accuracy. Unlike traditional flow probes mounted in the fan venturi that create a system effect hindering fan performance, Sure-Aire™ does not interfere with airflow and will not impact the fan’s air or sound performance. This option is available on all mixed flow fan models and ships completely assembled from our factory. An electronics package with pressure transmitter and digital read out
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Optional Two-coat Paint System In 1972, Greenheck took the lead as the first commercial and industrial fan manufacturer to introduce electrostatic powder coatings. Today, Greenheck continues to lead by being the first to offer a superior zinc-rich powder basecoat and powder coating finish. This zinc-rich basecoat technology is used extensively outside the HVAC industry to protect bridge beams, automotive components and other heavy-gauge steel products. Now, this advanced technology is availa
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Certifications & Listings Tau Bot Y psi 7880 7090 6300 Z X 5510 4720 3930 3140 2350 1560 770 -20 Seismic Certification The International Building Code (IBC) has been adopted at the state and local level throughout the United States. With the adoption of this code, comes the introduction of standards intended to improve the performance and design of non-structural systems subject to seismic events. QEI-I/II and QEID • Meet the 2006 IBC, 2009 IBC • California OSHPD requirements (horizontal m
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Belt Drive versus Direct Drive Belt Drive Advantages • Lower sound levels • Motor out of the airstream for easy access • Motor size may be changed to accommodate possible future air capacity requirements • Final system balancing accomplished by changing drives Direct Drive Advantages • Fewer wear components and less maintenance, no shaft, bearings, pulleys, or belts • More compact than equivalent belt drive size • Motor in airstream for increased motor efficiency and cooling • Equal
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Belt Drive Mounting Configurations QEI-I/II Sizes 9-27 and all QEI-L Universal Mounting QEI-I/II models sizes 9-27 and all QEI-L models can be mounted horizontally or vertically. For ease of installation, eight mounting brackets are welded on each fan. These Optional Mounting eight brackets along with standard mounting supports Rails provide for Greenheck’s Universal Mounting System. Motor positions are viewed from the discharge end. Fig. 1 Fig. 2 Fig. 1 Horizontal Base Mount Each fan
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Roof Upblast & Spark Resistant Construction Roof Upblast Models QEI-I/II sizes 9 through 54 and model QEID sizes 12 through 54, are available in roof upblast configuration. The roof upblast configuration is ideal for exhausting contaminants away from a building to prevent roof damage and re-entrainment of exhaust air. Both QEI-I/II roof upblast models have the high temperature UL rating and can be used for emergency smoke exhaust applications. Standard construction includes a fully-welde
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Accessories Availability QEI-L QEI-I QEI-II QEID Motor Cover A weatherproof motor cover shields the motor components from dust, dirt and moisture for indoor or outdoor installations. Motor covers also serve as a personnel guards and meet OSHA standards. Hinged Access Door Hinged access doors provide an opening through the fan housing for cleaning or visual inspection of the wheel. Bolted access door is standard. Extended Life Air handling quality, flange mounted bearings meet
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Exploded View Motor Cover Companion Flange Slip Fit Connection (Standard on QEI-I/II) Inlet Guard Outlet Flange (Standard on QEI-L) Outlet Guard Bolted Access Door (Standard) Spring Base Isolator Neoprene Base Isolator Inlet Flange (Standard on QEI-L) Companion Flange Spring Hanging Isolator Mounting Rails 15
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Direct Drive Selection Charts The quick select charts below and on the following page are a convenient method for sizing the fan required for a specific performance. Colored bands for a given size in each chart represent the entire operating range available for that size and speed. For QEID performance pages showing AMCA Licensed data for sound and air performance please refer to the Model QEID Sound and Air Performance Supplement found at www.greenheck.com 12 10 1770 RPM 8 (60 Hz) Static P
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QEID Dimensional Data 8 6 870 RPM (60 Hz) Static Pressure 4 (in. wg) Model QEID 36—54 2 36 40 44 49 54 0 10 20 30 40 50 100 Volume (cfm x 1000) Slip Fit O.D. Length* Weight** Size inches mm inches mm lbs. kg. 12 17.13 435 25.0 635 100 45 15 20.88 530 25.0 635 140 65 Slip Fit O.D. 16 23.00 584 26.0 660 170 80 18 25.38 645 29.0 737 200 95 20 27.81 706 34.0 864 250 115 22 30.88 784 35.5 902 370 170 24 34.00 864 41.5 1054 480 220 27 37.44 951 45.0 1143 570 260 30 41.63 1057 860 390 Length 33 45.
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QEI Dimensional Data QEI-L QEI Airflow Airflow Slip Fit Height Airflow Slip Fit Height Height O.D. Airflow Height O.D. Length Length Length Length QEI-L QEI Class I QEI Class II Slip-Fit O.D. Length Height Slip-Fit O.D. Length Height Length Height Size inches (mm) inches (mm) inches (mm) inches (mm) inches (mm) 9 NA NA NA 17.13 (435) NA NA 28.5 (724) 36.5 (927) 12 17.5 (445) 26.5 (673) 37.5 (953) 17.13 (435) 28.5 (724) 36.5 (927) 30.5 (775) 36.5 (927) 15 21.13 (537) 29.0 (737) 41.5 (1054)
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3400 4000 2800 1600 2200 50% WOV 60% WOV 70% WOV 80% WOV 90% WOV QEI-9 Class II 10 5 RPM Performance Data BHP 3 % WOV 3 Density 0.075 lb/ft Maximum Fan RPM 4000 3 Density 1.2 kg/m Specification Data 8 20 Maximum Motor 2 184T Frame Size 6 15 1½ Minimum Motor 1/3 hp .25 kW Starting hp Wheel Diameter 15 in. 381 mm 1 4 10 ¾ Approximate Weight 170 lbs. 77 kg. (Less Motor & Drives) ½ 3 Maximum Bhp = (Fan RPM / 2671) 3 5 2 Outlet Velocity (FPM) = CFM / 1.56 Tip Spe
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3200 3800 2600 1400 2000 50% WOV 60% WOV 70% WOV 80% WOV 90% WOV QEI-12 Class I & QEI-L 10 7½ Performance Data 5 RPM BHP % WOV QEI-L 3800 Maximum 3 Density 0.075 lb/ft 3 Density 1.2 kg/m Fan RPM QEI 3800 20 8 Specification Data 3 Maximum QEI-L 184T Motor 15 6 QEI 184T Frame Size 2 Minimum Motor 1½ 1/3 hp .25 kW Starting hp 10 4 Wheel Diameter 15 in. 381 mm 1 QEI-L 120 lbs. 55 kg. ¾ Approximate Weight ½ (Less Motor & Drives) QEI 160 lbs. 73 kg. 5 2 3 3 Maximum Bhp
