Document 2J6aO6pDp5JQ8p0o1R7R1jxDp

Air Conditioning Automatic Equipment; Direct-Fired Units, Unit Heaters Lee Engineering Company Union National Bank Bldg., Youngstown, Ohio LEE DIRECT WARM AIR HEATING The Lee System of warm air heating generally costs less to install than steam or hot water; utilizes fuel with a high degree of efficiency; distributes the heat exactly where needed; responds promptly without lag; requires little or no maintenance; and needs no licensed attendant. Heaters for use with the Lee System are made in the four types illustrated and described briefly below. BRICK-SET TUBULAR HEATER For- use with central heating system in connection with duct distribution. Single heater capacities from 2,800,000 Btu per hour to 8,000,000 Btu per hour. Two heaters, installed as a battery serving as one unit, provide capacities over 10,000,000 Btu per hour. STEEL ENCASED TUBULAR HEATER For use with central heating systems in connection with duct distribution over a capacity range of from 2.000.000 Btu per hour to 6,000,000 Btu per hour. Heater may be installed in heated area without en closure, requires no foundation, and may be moved from one location to another by taking unit apart and reassembling. TUBULAR UNIT HEATER For use either as a central system in connection with duct distribution or with adjustable outlet nozzles as a unit heater. Capacity range from 2,000,000 Btu to 6.000.000 Btu per hour. In sizes up to 4,000,000 Btu heater is shipped as a completely assembled unit with all but mechanical equipment, refractory lining and controls in place. Heaters require no foundation and are equipped with crane hooks so that they may be moved from one location to another. SHELL UNIT HEATER . For use with or without distributing duct system. Heaters have capacity range of from 300,000 Btu to 2.000.000 Btu per hour. Available for gas, oil or com bination gas-oil firing. All units are shipped completely assembled, wired and ready for operation. Units furnished with either refractory lined or stainless steel combustion chambers. Heaters may be floor mounted or suspended in any position. Also available in both hand and stoker fired models: Brick Set Tubular Healer Steel Encased Tubular Healer Tubular Unit Heater Shell Unit Heater For further information write for Catalog HV-44. 982 Air Conditioning Dn^ttrFiLdeun?ti National Heater Company 2182 Cleora Avenue, St. Paul 4, Minnesota Nation ai championL STEEL S-P-A-C-E HEATERS GAS AND OIL FIRED UNITS National Champion Heaters are available in both factory floor set units, as illu strated, and in quiet operating, resilient mounted models for convenient connection to duct distribution system. Skeleton view illustrates compactness of heat exchanger and blower section mounted on sturdy angle-iron base frame. Lifting eyes are provided for crane handling. Streamlined firebox of rust and heat resisting Stainless Steel requires no refractory and affords life far beyond that possible with mild carbon steel. Tear Drop combustion chamber design and convector tube arrangement assure complete efficient air impingement on all heating surface at a minimum of resistance. Induced draft blowers can be supplied when suitable chimney or stack is not available. ENGINEERING RATING CHART--TEAR DROP DIRECT FIRED HEATERS Heater Number T.D. 25 T.D. 40 T.D. 50 T.D. 70 T.D. 80 T.D. 100 T.D. 125 TJ>. 150 Heater Number TX>. 25 T.D. 40 T>. 50 T.D. 70 T.D. 80 T.D. 100 T.D. 125 T.D. 150 B.T.U. Output Capacity S.P. CF.M. Sq. Ft. Heating Surface Blowers D WDI Maximum Firing Rate Oil Gas GP.H. C.F.H. Blower Motor H.P. R.P.M. Stack Rcq'd. Minimum Dia. Hgt. Inches Feet 250.000 400.000 500.000 700.000 800.000 1.000.000 1.250.000 1.500.000 Tubes No. Dia. 3.600 5.400 6.600 8.800 10.200 12.500 15.300 19.400 120 130 >50 175 200 250 315 375 14* Twin 2.5 330 V* 1750 14* Twin 4.0 550 1 1750 14* Triple 5.0 680 l'/2 1750 14* Triple 7.0 940 2 1750 16* Triple 7.5 1100 2 1750 16* Triple 9.5 1400 3 1750 18* Triple 11.5 1610 5 1750 18* Triple 14.0 2040 5 1750 10 10 10 10 12 12 14 14 Approximate Warm Air Shipping Plenum Weight Opening Overall Gauge Materia] Dimensions Width Inches Length Stainless Height Tubes Head- Steel ers Comb. Chamber Cas ing 20 20 25 25 30 30 35 35 Dis charge Heads 1.300 14 x 60 32 60 81 14 12 14 20 18 1.350 14 x 60 32 60 81 14 12 14 20 18 1,780 14 x 80 32 81 14 12 14 20 18 1,855 14 x 80 32 81 14 12 14 20 18 2.110 18 x 80 48 81 14 10 14 20 18 2.200 18 x 80 48 81 14 10 14 20 18 3,000 20 x 100 54 100 96 14 % 14 20 18 3.250 20 x 100 54 100 % 14 % 14 20 18 983