Trane Fan manual Mechanical Specifications

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Mechanical Specifications

Q FAN ASSEMBLY

Housing

Housings are 14-gauge steel hydraulically expanded to form integral inlet bell and diffuser sections. Hydraulically expanded stiffening ring welded in area of wheel raceway. On VAV variable speed fan units, fan inlet supports are structurally reinforced to handle extra stresses of variable speed fan modulation and fan is balanced at ten different fan speeds over the desired operating range.

Inlet/Outlet Shells

Fan has tapered inlet and outlet shells over fan hub assembly. Shells uniformly accelerate air through blade area. End bell covers fan drive assembly, thereby reducing flow turbulence. Eight fan blades are precision aluminum casting with airfoil cross sections. Blade to shell clearance is in the range of 30 mils.

Fan Wheel

Fans size 16-44 have fan wheel of precision aluminum casting with eight radially projected blades with air-foil cross sections.

Fans size 49-60 have fan wheel of sixteen precision cast and machined aluminum blades mounted on a steel wheel plate.

All wheels are dynamically balanced and keyed to fan shaft.

Diffuser

Cast aluminum diffuser with 29 radially projected straightening vanes with airfoil cross sections. Leading edge of vanes are curved to reduce tone noise generation. Clips on almost every other vane eliminate harmonic ring potential.

Shaft

Solid AISI-C1040 hot-rolled steel, turned and polished. Close tolerances maintained where shaft makes contact with bearings.

Bearings

Precision, flange-mounted, self-aligning ball bearings at inlet and discharge. Bearings on all sizes are grease lubricated and selected for a minimum average life (AFBMA L-50) in excess of 200,000 hours at maximum cataloged operating conditions. Bearing greaselines are extended out through fan shell for easy servicing.

Drives

Mechanical drives are computer selected for low noise, low maintenance operation. Center distance and arc of contact is maintained within prefixed limits. Constant speed fans use variable or constant pitch drives; variable speed modulated fans use fixed drives only.

SUPER QUIET II FANS

Trane Super Quiet II (SQ2) fans include fan housing, wheel, shaft, bearings, diffuser section, motor mounting support, ODP standard or high efficiency motor, drives, spring isolation in acoustically-treated casing in a factory-assembled unit. Fan motors are outside of airstream.

Constant volume units (SQ2C) are equipped with variable or constant pitch drives. Variable air volume units (SQ2V) use adjustable frequency inverters for fan capacity modulation and must have constant pitch drives. Inlet vanes are NOT available for Super Q II fans.

ENCLOSURE

Fans are internally isolated on four height saving spring isolators and then flex connected inside of an airtight acoustical enclosure. Walls are

16-gauge steel, internally lined with two-inch thick three-pound per square foot density fiberglass. Airside surface of acoustical lining is coated with black matte faced lining to prevent scuffing.

Enclosure has two large full size

side access panels. Access panels are fully gasketed and mechanically attached to casing for easy removal. Enclosure has access panel positioning feet to insure easy access panel replacement after removal.

Duct connections in enclosure end panels slip connect to standard U.S. round duct sizes.

Fan grease lines are extended through enclosure for easy servicing of fan. Optional fan motor leads are extended through casing for easier installation.

Two rails support the entire enclosure. Rails can be rested on floor or hung from the ceiling with steel rods. Ducts can be directly connected to enclosure since fan is internally isolated.

Enclosure is rated for four-inch negative or five-inch positive pressure.

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Contents FAN-DS-2 August Model Q Fans Sizes 16 through Super Q II FansFeatures and Benefits Contents Features Benefits Trane Model Q fans require up toSuper Q II Fan Variable Air Volume CompatibleSuper Q II Accessories Super QTrane Plus Duct Silencer Plus SilencerStatic regain Airflow Aerodynamic Air Path This provides smooth, spiral-free dischargeFeatures Benefits Saving Valuable Equipment Room Space Draw-Thru Supply Application Small CapacityDraw-Thru Supply Application Large Capacity Figure F-5Table F-1 Total Installed Cost Comparison Features Benefits Reduce Installed Cost By UpTo 20 PercentLower Installation Costs First Cost ComparisonsModel Number Description Valid Select Prod Able Cat DescriptionValid Select Prod Able Prod. able Cat Description Application Considerations AbbreviationsSystem System Curve Performance Data Determination Fan Performance CurvesUnducted Plenum Inlet Unducted Outlet Table A-1 Q Fan/Super Q II Fan Installation Kt CorrectionsFan Option Kt Corrections Ducted Inlet Ducted OutletSuper Q II Fan Modulation AC Inverter Capacity Control Figure A-5 VAV System Modulation CurveFigure A-6 Inlet Vane Performance Table A-3 Maximum Torque For Operation Of InletVanes Motor and Drive SelectionParallel Fan Operation Table A-4 Parallel OperationRecommended Super Q II NC40 Plenum Configuration Operating Cost/EfficiencyFan Sound Data Trane Acoustics ProgramTable A-5 Inlet Vane Sound Data Selection Procedure Table S-1 Short Plus Silencer Attenuation 1D LengthTable S-2 Long Plus Silencer Attenuation 2D Length Fan Size PerformanceData Minimum Fan RPM Without Vfrb OptionPerformance Fan Data Super Q Size Minimum and Maximum Motor HP RangesTable P-2 Size 19 Q Fan Performance Fan Data Super Q Size Table P-3 Size 21 Q-Fan Performance Fan Data Super Q Size Table P-4 Size 24 Q-Fan Arrangement 15-30 Table P-5 Size 27 Q-Fan Arrangement Table P-6 Size 30 Q-Fan Performance Fan Data Super Q Size Table P-7 Size 33 Q-Fan Performance Fan Data Super Q Size Table P-8 Size 36 Q-Fan Performance Fan Data Super Q Size Table P-9 Size 40 Q Fan Performance Fan Data Super Q Size Table P-10 Size 44 Q-Fan Performance Fan Data Super Q Size Minimum Fan RPM Without Vfrb Option Fan Table P-12 Size 54 Q-Fan Fan Table P-13 Size 60 Q-Fan Fan Dimensional Data Weights Arrangement 9 Dimensions OutArrangement Arrangement 1 Dimensions Out Arrangement1Arrangement 9 Dimensions Dimensional Figure D-1 Q Fan Inlet Vanes Table D-1 Inlet Vane DimensionsFigure D-3 Super Q II 16-44 Sizes Table D-3 Table D-5 Long Outlet Plus Silencer Mechanical Specifications Inlet Bellmouth Q, SQ2 Adjustable Inlet VanesInlet Screen Q, SQ2 Inlet Flange QFAN-DS-2

Fan specifications

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