Heatcraft Refrigeration Products Comprehensive Heatcraft Refrigeration Manual and HCS Insights

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Bulletin AH-TB

January 2011

(Replaces AH-91C)

Air Handlers

Tech Bulletin

For Air Conditioning, Heating and Ventilation

Available in Bohn™, Climate Control™, Chandler™ & Larkin™

Models HCS, HCL

VCS, HD

Size 03 thru 75

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Contents Air Handlers Quality Standard IndexCabinet style Fan Type NomenclatureStandard Unit Features Direct Expansion Coils Air Handler CoilsWater Coils Heat Reclaim CoilsConstruction & Dimensions Accessories- Electric HeatUnit Heater Dimensions Size Maximum KW Electric Heater Selection ExampleComponent 208 240 460 480 Accessories Filters And Auxiliary Sections Auxilary Sections- All unit Sizes Dimensions, Page 29 toAvailable Motors, Drives, Motor Starters per Horsepower Accessories for Fan and Coil SectionsMotor Drive Starter Motor Horsepower Description ‘A’ = AvailableSelection Conditions Air Handler SelectionSelection Example Selection ProcedureAir Handler Performance Quick Reference Air volume at Air handler DX air Refrigerant Chilled waterSteam Cu m/hCoil Air Handler Performance- Direct ExpansionAir Handler Perfromance- Direct Expansion Saturated Suction Temperature1339 1553Row Coils Air Handler Performance- Chilled WaterSize Air Area Std Face Air Handler Perfromance- Chilled WaterHeating 0F. Air Air Handler Performance- Hot Water/SteamSize Air Sq. Ft Heating 60F. AirOne Row Two Row Two Row One RowCoil Perfromance- Heat Reclaim MBH/SQ FT Temperature DifferenceType a and Type 5, hot gas reclaim, heating capacities Coil Performance- Direct Expansion MBH/SQ FT Refrigerant Evaporating Temperature FActual capacity will vary With coil circuiting 400 450 500 550 600Chilled Coil Perfromance- Chilled Water MBH/SQ FTRows FPM, Type a Coils 1/2 DIA FPM, Type 5 Coils 5/8 DIAFPM, Type 5 Coils 5/8 DIA Rows Coil Performance- Heating, Water & Steam500 600 650 700 400 FPM, Type 8 Coils 1 DIA RowsSize Fan PerformanceCoil Total RPM BHP Size 14 and SizeSize 20 and Size 32 3/8 Airfoil Fan Dimensions inches High Efficiency Filter Sections- DimensionsSize 65 and Size High Efficiency Filter SectionDimensions Size Accessory Flange PatternMixbox Inlet Duct Connections Sizes 03 Sizes 20Reference DimensionsMix box Motor and coil connectionDischarge Sizes 03 41 FCSizes 50 75 AF 10 1/8 For All Units Sizes12 5/8 Rows 15 5/8 MixboxDimension ‘T’ Depth is dimensionSizes 50 65 AF ‘D’ added toFor All Unit Sizes Sizes 03 Mounting Locations For Vibration IsolatorsSize Edge All mounting holes are 5/8 inch diameter Rows Inch filters For All Unit SizesOne and two row heating coils do not have Vibration Isolators, Quantity Required Coil SectionModels Air Flow Reheat Position Preheat PositionWeight in pounds Net Weights and Metal GaugesTo estimate weights for other coils Air Handler Component Unit SizeFace Area Air Handler Unit Size Square Feet Face Areas- Air Pressure Drops, Dry CoilsDepth Flat & hi 35% Efficient , Pleated Air Pressure Drops- Cabinets, Filters, Wet CoilsFin Air Velocity Feet Per minute Physical Data CFM Range Cooling Unit Size19.25 25.50 34.00 40.38 49.50 64.58 74.91 Small 16.04 21.25 27.63 31.88 40.50 51.67 59.42Mechanical Specification