Heatcraft Refrigeration Products HCS manual Accessories- Electric Heat, Construction & Dimensions

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Accessories- Electric Heat

Electric heaters are UL listed for duct installation. The UL label applies to the heater only, not the complete air handler.

Heaters are furnished as a separate section and are available with insulated or uninsulated casings. Controls such as contactors, fuses, etc., may be factory installed and wired in the heater section end panel provided the number of control steps is not excessive.

Remote control panels are also available.

Construction & Dimensions

Unit		Heater Dimensions (In.)
Size		H	W
03		22 3/4	30 5/8
06		26	45 5/8

08		35 1/2	42 5/8
10		35 1/2	51 5/8

12		38 3/4	57 5/8
14		38 3/4	66 5/8

18		47 3/4	66 5/8
20		44	83 5/8

26		44	108 5/8
34		54	108 5/8
41		65	108 5/8
50		74 3/4	110 7/8

65		82 3/4	126 7/8
75		94 3/4	126 7/8

Notes: Heaters for constant volume units to have 35 W/in2 of wire surface maximum.

6

Y

	1. Total KW Needed
	Approximate KW =	CFM x TD (F)

		3000
		3000

2. Number Of Steps Recommended

Rule of thumb for calculating the recommended number of steps required. Use Step A or B below, whichever is higher.

A. Number of Steps =		300 x Total Heater KW

		CFM
(Based on approx. 10°F. temp. rise per step)
B. Number of Steps =		Total Heater KW

	Maximum KW per step

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Contents Air Handlers Index Quality StandardNomenclature Cabinet style Fan TypeStandard Unit Features Water Coils Air Handler CoilsDirect Expansion Coils Heat Reclaim CoilsAccessories- Electric Heat Construction & DimensionsUnit Heater Dimensions Size Electric Heater Selection Example Maximum KWComponent 208 240 460 480 Accessories Auxilary Sections- All unit Sizes Dimensions, Page 29 to Filters And Auxiliary SectionsMotor Drive Starter Motor Horsepower Description Accessories for Fan and Coil SectionsAvailable Motors, Drives, Motor Starters per Horsepower ‘A’ = AvailableAir Handler Selection Selection ConditionsSelection Procedure Selection ExampleSteam Air volume at Air handler DX air Refrigerant Chilled waterAir Handler Performance Quick Reference Cu m/hAir Handler Performance- Direct Expansion Coil1339 Saturated Suction TemperatureAir Handler Perfromance- Direct Expansion 1553Air Handler Performance- Chilled Water Row CoilsSize Air Area Air Handler Perfromance- Chilled Water Std FaceAir Handler Performance- Hot Water/Steam Heating 0F. AirOne Row Two Row Heating 60F. AirSize Air Sq. Ft Two Row One RowTemperature Difference Coil Perfromance- Heat Reclaim MBH/SQ FTType a and Type 5, hot gas reclaim, heating capacities Actual capacity will vary With coil circuiting Refrigerant Evaporating Temperature FCoil Performance- Direct Expansion MBH/SQ FT 400 450 500 550 600Rows Coil Perfromance- Chilled Water MBH/SQ FTChilled FPM, Type a Coils 1/2 DIA FPM, Type 5 Coils 5/8 DIA500 600 650 700 400 Coil Performance- Heating, Water & SteamFPM, Type 5 Coils 5/8 DIA Rows FPM, Type 8 Coils 1 DIA RowsFan Performance SizeCoil Total Size 14 and Size RPM BHPSize 20 and Size 32 3/8 Airfoil Fan Size 65 and Size High Efficiency Filter Sections- DimensionsDimensions inches High Efficiency Filter SectionMixbox Inlet Duct Connections Accessory Flange PatternDimensions Size Sizes 03 Sizes 20Mix box DimensionsReference Motor and coil connectionSizes 03 41 FC DischargeSizes 50 75 AF 12 5/8 Rows 15 5/8 For All Units Sizes10 1/8 MixboxSizes 50 65 AF Depth is dimensionDimension ‘T’ ‘D’ added toSizes 03 Mounting Locations For Vibration Isolators For All Unit SizesSize Edge For All Unit Sizes All mounting holes are 5/8 inch diameter Rows Inch filtersOne and two row heating coils do not have Models Coil SectionVibration Isolators, Quantity Required Air Flow Reheat Position Preheat PositionTo estimate weights for other coils Net Weights and Metal GaugesWeight in pounds Air Handler Component Unit SizeFace Areas- Air Pressure Drops, Dry Coils Face Area Air Handler Unit Size Square FeetAir Pressure Drops- Cabinets, Filters, Wet Coils Depth Flat & hi 35% Efficient , PleatedFin Air Velocity Feet Per minute Physical Data 19.25 25.50 34.00 40.38 49.50 64.58 74.91 Small Unit SizeCFM Range Cooling 16.04 21.25 27.63 31.88 40.50 51.67 59.42Mechanical Specification