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FAN-DS-2
August 2000
™
Model Q Fans
Sizes 16 through 60
Super Q II Fans
Sizes 16 through 44
Model Q Fans
Sizes 16 through 60
Super Q II Fans
Sizes 16 through 44
FAN-DS-2
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Features and Benefits Flexible Installation Q Fan Benefits ™ The Model Q arrangement 9 can be set The Model Q fan is a quiet, airfoil, in- The Q (Quiet) Fan in any position, for horizontal line fan specifically designed for air The Trane Model Q fan generates less discharge, angled discharge and conditioning applications. This highly low frequency noise (more difficult to vertical discharge either upblast or refined axial flow fan is available in 13 attenuate) than any other type of fan in
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Contents Q Fan Accessories Features and Benefits 2 Inlet flange — for simplified, rigid connection of ductwork to inlet end of fan Inlet screen — safety accessory Model Number Description 12 mounted to fan inlet. Heavy, plated steel wire Note: inlet screen and inlet flange are mutually exclusive. Inlet vanes — mechanically modulate Application Considerations 13 fan capacity Inlet bellmouth — used with unducted or plenum applications. Improves air flow and reduces noise. Selection Proc
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Features and Benefits This chart shows a typical NC level comparison between common vaneaxials, tubular centrifugals, airfoil ™ centrifugals and the Trane Model Q compact fan. The shaded area represents range of vaneaxials tested. Trane Model Q fans require up to 85 percent less cubic space than airfoil centrifugal fans and 40 percent less than common vaneaxials of equivalent installed sound level. Floor space savings can be as much as 65 percent when compared to the common vaneaxial and airfoil
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Features and Benefits Although the Model Q needs very little Super Q II Accessories Super Q II Plus maintenance, future maintenance Inlet screen — safety accessory More than twenty years after the ™ requirements were considered by mounted to fan inlet. Heavy, plated , it still introduction of the Model Q Super Q II designers. Every unit has the steel wire retains its reputation as one of the bearing grease lines extended through Inlet bellmouth — used with unducted quietest HVAC fans in the
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Features and Benefits By carrying the concept of noise source The modular, component design Trane Plus Duct Silencer attenuation to its economic maximum, approach of the Super Q II air handling The Plus option is a high performance Trane has created a fan system that can system makes it exceptionally well duct silencer. Designed specifically for ™ move significant amounts of air suited for renovation, retrofit and the Super Q II and Model Q , it has without creating objectionable low replacement
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Features and Benefits Low Sound Level, High Efficiency Provided by Unique Aerodynamic Features [9] Airfoil Vanes (stationary) [4] Airfoil Blade Wheel. [10] Stabilizing Pitch [5] Aerodynamic Pitch [7] Hub Streamlining Insulation [6] Minimum Tip Clearance [2] Aerodynamic Inlet Bell [12] End Cone [8] Exact Blade to Vane Spacing [11] Precise Divergent Angle Diffuser Discharge Cone [3] Aerodynamic Inlet Cone [1] Thin Strut Patented Bearing Support Aerodynamic inlet provides smooth Precision cast
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Features and Benefits The low sound and high performance The aerodynamically shaped inlet bell stabilization ahead of the vanes. The ™ of the Trane Model Q fan are achieved [2] and inlet cone [3] provide uniform vanes themselves are precision cast by reducing noise-creating, energy- axial flow parallel to the fan shaft. Air is aluminum and have an airfoil cross consuming turbulence within the fan. delivered equally to the leading edge of section [9] and a precise radial pitch Airflow research an
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Features and Benefits Saving Valuable Equipment Room Space ™ The Trane Model Q and Super Q II Return or Exhaust Applications Draw-Thru Supply Application fans can help you maximize your Figure F-1 shows a size 44, single (Small Capacity) building’s usable floor space by using width, low pressure airfoil centrifugal The fan system in Figure F-3 is a them in place of centrifugal fans. The fan delivering 20,000 cfm of air. 27-inch, single width, medium pressure smaller the equipment room, the more
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Features and Benefits Draw-Thru Supply Application Blow-Thru Supply Application (Large Capacity) Figure F-7 shows a typical medium A 60-inch, single-width, medium pressure, built-up, blow-thru system. pressure airfoil centrifugal fan is used The fan, enclosed in a plenum, is a 33- in the system illustrated in Figure F-5 to inch, double width, airfoil centrifugal supply 45,000 cfm of air. This capacity that delivers 30,000 cfm of air. The can be easily achieved by installing a bulkiness of the pl
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Features and Benefits Reduce Installed Cost By Up To 20 Percent ™ The Trane Model Q fan, with all its Lower Installation Costs Class III fans. Airfoil and tubular precision and quality, is still a cost The Trane Model Q fan has fewer centrifugals, because of greater weight, effective fan. When all necessary components to install and the often require pads for Class I and II to system components are considered, it advantage of lighter weight. With only minimize the effect imposed by normal provid
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Model Number Description Valid Select- Valid Select- Valid Select- Prod. able Prod. able Prod. able Cat. Item Description Cat. Item Description Cat. Item Description CYCLE QSE E-cycle 16-44 arr 9 cl 1&2 MTHP 1 Motor hp 1 (.7 kW) INSL F Fan insulation w/o mtr mtd 1.5 Motor hp 1.5 (1 kW) FA Fan and accessories QSE1 E-cycle 16-44 arr 9 cl1&2 2 Motor hp 2 (1.5 kW) insulation w/mtr mtd 3 Motor hp 3 (2 kW) QSQ Q-cycle 16-44 arr 9 cl 1,2&3 5 Motor hp 5 (4 kW) ENHA DBLE Double acoustic MTO Std cycle 16
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Application Considerations This section assists the system System Curve For a fixed system, an increase or designer in application and control of At a fixed volume flow rate (cfm) decrease in system resistance results Trane Q and Super Q II fans. through a given air system, a from an increase or decrease in the Satisfactory distribution of conditioned corresponding pressure loss, or volume flow rate along the given air requires a properly chosen fan and resistance to this flow, will exist. If th
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Application Considerations Performance Data Determination Figure A-2 — Point of Operation — Interaction of the System Curve and the Fan Performance Curve The fan performance section of this catalog contains a fan performance table and fan curve for each fan size. The performance data contained in this catalog was calculated from tests conducted in accordance with AMCA Standard 210 Laboratory Methods of Testing Fans for Rating. The AMCA test procedure uses an open inlet and 10 wheel diameters of
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Application Considerations Table A-1 — Q Fan/Super Q II Fan Installation Kt Corrections The following is the procedure to use when selecting a fan for elevations and Unducted (Plenum) Inlet* Unducted Outlet temperatures other than standard: Blow-Thru Type Design +.8 Draw-Thru Type Design 0.0 1 Ducted Inlet Ducted Outlet Determine the air density from Turn > 2 Dia Downstream 0.0 Turn > 3 Dia Upstream -1.0 Figure A-3. Turn 1 Dia Downstream +1.3 2 Turn 2 Dia Upstream +.8 Turn 1 Dia Upstream +1.3 Tu
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Application Considerations Q and Super Q II Fan Modulation — As VAV terminal units begin to close in The VAV system modulation curve can AC Inverter Capacity Control response to a decreasing cooling load, be drawn using a Trane system Q fans and Super Q II fans can be static pressure in the ductwork modulation overlay. The axis of the modulated with AC frequency drives. increases. This causes the fan overlay is placed on a static pressure The Trane Company recommends operating point to temporari
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Application Considerations The control static pressure can then be Part load fan power consumption with On Figure A-6, plot a system curve from expressed as a percent of peak static inlet vanes can be determined by the control static pressure through the pressure and plotted. The system entering Figure A-6 at the desired point of operation defined as a modulation curve is described by the percent wide open cfm. (Wide open calculated percent wide open cfm. Read curve on the modulation overlay tha
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Application Considerations Table A-3 — Maximum Torque For Table A-4 defines this constant Motor and Drive Selection Operation Of Inlet Vanes system curve as a percent of wide- The Model Q fan has been designed for Control Opening Closing open cfm. If fans in parallel are use with NEMA “T” Frame Arm Torque Torque always operated to the right of this motors. Motor hp limits for Class I, II, Size Class (In.) (In.-Lb) (In.-Lb) 1 8 7 constant system curve, fan paralleling and III construction
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Application Considerations Recommended Super Q II (NC40) Plenum Configuration Recommended Super Q II Multiple Fan (NC40) Low Height Plenum Configuration Recommended Super Q II Quiet (NC35) Floor-Mounted (Stacked) Configuration Operating Cost/Efficiency The Trane fan selection program When comparing the Q fan The quiet Q fan is a very efficient fan. provides accurate part load energy performance with centrifugal fans, The Q fan mixed-flow type airfoil thrust consumption no matter what fan remem
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Application Considerations Q Fan Sound Data Trane Acoustics Program Plus silencer attenuation is shown in Trane Q fans are designed to be used in Trane has a system level acoustics Tables S-1 and S-2. Use the Trane fan any installation where a standard airfoil computer program that accurately selection program to obtain precise centrifugal fan can be used. The sound converts fan sound power to room NC Plus attenuation with regenerated level of the Q fan in the difficult to levels. This program
