A-102-1 Electric Duct Heater Brochure - Brasch

Ratingsand SizesYou specify it—we build it! Heatersdescribed in this bulletin are customdesigned at no extra charge to yourexact size, wattage, voltage andphase and number of steps. Any ductsize from W = 5" and H = 4" minimumto W = 480" and H = 180"maximum, wattages to 2000 KW canbe furnished. Base price dependsupon duct size and KW rating; baseprice is the same for single or threephase and does not change withnumber of steps.For practical design of heater, minimumrecommended KW per step is .5KW for 208V single phase; 1.0 KW for277V or 480V single phase and 2.0KW for 480V or 600V three phase.UL ListingUL Listed by Underwriters Laboratories, Inc. under File Nos. E 39836 and E39386for zero clearance between heater and combustible surfaces. Listing includes allbuilt-in components unless otherwise noted. Heaters are also UL Listed for usewith heat pumps and air conditioners when mounted 4 feet or more from unit andmaximum inlet air temperature is 100°F.Quality ControlHeaters are dielectrically tested for 1000V plus twice the rated voltage or 2000V,whichever is higher. The resistance of each heater is measured and recorded andmust be within 5% of rated value. Electrical components are tested and inspectedafter installation in the heater. Every heater is checked twice; once in productionand once by a trained Quality Control inspector who gives each heater a thoroughinspection.Suggested Schedule for Electric Heating CoilsHorizontalInsideorDuct Type VerticalTag Size CFM No. of Control of AirflowNO. W' x H' (Min.) KW Voltage/Phase Steps Volts Control Direction Special FeaturesEH-1 to 10 12 x 8 430 5.0 480/3 2 24 PE Direct ActingEH-11 18 x 12 750 21.5 480/3 1 24 SCR HAF Direct Acting TransducerAH-1 — 5000 85.0 480/3 6 24 Step Control Preheat for Carrier 39BA120-BBULLETIN A102-13