Document gYzkwNyqvzqERgyy2ze27M2L

S. T. Johnson Go 940-950 Arlington Avenue, Oakland, California Branches:--San Carlos. Cal.; San Francisco, Cal.; Sacramento, Cal.* 401 N. Broad St., Philadelphia, Pennsylvania. '' i J Founded in 1904, S. T. Johnson Co. is one of the oldest and largest manufacturers of oil burning equipment and offers a complete line from small domestic to large industrial units with manual or full automatic ignition and control, burning-^ from the lighter fuel oils to the heaviest grades ... it includes combination oil-arid^ natural gas burners, burners with Low Fire Starting and Modulated Firing accessories the Laddi Du-all Boiler-Burner unit and the air-conditioning, ventilating and heating unit, "Selectair." * The company provides complete engineering and technical service for assistance in the solution of heating and air-conditioning problems. Representatives in principal cities throughout the world. JOHNSON COMMERCIAL TYPE ROTARY OIL BURNERS (Capacities up to 55,600 sq ft steam radiation or its equi valent). The three commercial types of Johnson Rotary Oil Burners are of the same basic construc tion, consisting of motor, fan, housing and firehole plate, con centrically mounted in a com pact unit . . . easily installed on any make of boiler. Exact amount of air necessary for perfect atomization is supplied by motor-driven fan and ad justed by butterfly valve. Complete combustion of cheap er grades of fuel oil is accom plished by the Johnson method of centrifugal atomization. An oil-air ana water separating tank prevents foreign matter entering the fuel. - rfMH SPEED CENTRIFUGAL FUEL ATOMIZING CUP POSITIVE FUEL SUPPLY FROM OIL PUMP ON .BURNER AIRCOOLED MOTOR FAN AND MOTOR MOUNTED ON SHAFT SUPPORTEO BY BALL BEARINGS. INSURES SILENT CAREFREE OPERATION TYPE 30-AV AND 30-AVH FULLY AUTOMATIC The 30-AV uses up to No. 5 Dimensions and Capacities of Types 28, 30AV and 30AVH Burners Burner Size No. l'/i Capacity Steam `Radiation Sq Ft Min. 825 Max. 2775 Boiler Hp Rating 20 Gallons Oil per Hour Size Motor Hp Min. Max. 2 7H Lb Approximate Shipping Weight 28H 30AV 30AVH 220 275 285 A 14 Dimensions in inches B CDE 13 9'/2 696 17 F 15 m 1400 6950 50 3 15 Vi 250 300 320 16% isy. 10'/. 8'/, 171/2 151/2 4Vi l50l/2 5'/2 2775 4150 5550 13900 20900' 27800 100 150 200 6 30 9 45 12 60 y. 400 470 l'/2 460 525 2 475 540 505 17 191/2 13 9% 2t 19'/, 560 2l'/z 211/2 13 II 24 20 575 21 Vi 2l'/2 13 II 24 20 6Vl 8325 41700 300 24 90 3 525 575 625 2l'/2 2!'/z 13 ii 25 20-/2 r/2 18500 55600 400 40 120 3 725 21'/2 24 14 n 25 20>/z Boiler output. Type 28 Burner available without built-in pump in same capacities. 962 5 f. Johnson Co. Burners, Oil fuel without pre-heating. Johnson-built viscosity compensating control valve furnishes constant flow of fuel to burner, regardless of fuel temperature or vis cosities and without excessive pressure on lines or undue strain on pump or motor. Built in six sizes, up to 41,700 sq ft steam radiation. The 30-AVH is designed for efficient use of heavy No. 6 fuel oil. Fundamentally, this is the standard 30-AV burner with equipment for pre-heating the fuel. Built in six sizes, up to 41,700 sq ft steam radiation. Type 28 Semi-Automatic Burner, manually ignited, is made for heating boilers up to 55,600 sq ft of steam radiation or 400 boiler horsepower. Built in seven sizes, with built-in oil pump, and seven sizes for use with separate oil-pumping equipment. Fuel oils (pre-heated when necessary) as heavy as No. 6 may be used. `Laddi* Du-All combination boiler-burner unit for small and medium-sized homes, is fully automatic, odorless, quiet and trouble-free. It furnishes heat or domestic hot water or both in combination at low cost. Made in three sizes: 100,000, 120,000 and 140,000 Btu per hour output. These units rest on the floor. Diameter at base is 24 in. on all three sizes while heights are 4J4 ft, 5 ft, and 5)4 ft respectively. ''Laddi' Du-All Specifications: Vertical % in. copper-bearing steel boiler shell electrically welded, tested to 150 lb hydrostatic pressure. Horizontal firebox with pre-cast refractory combustion chamber; seamless extra heavy copper-bearing steel fire tubes; reversible chimney connector for either top or back connection. Complete ly insulated with mineral wool. Heavy steel enameled jacket. Johnson Type B or BH burner. Electric ignition or combination electric-gas ignition. Each unit complete with necessary controls. Burns either Diesel fuel oil or No. 3 standard. Each unit' fully assembled and tested at factory before shipment. The Pressure Atomizing Burner used with the "Laddi" is available as a conversion bur ner for all types of furnaces and boilers. It is built in four sizes, covering a range from % to 7)4 gal per hour, equivalent to 300 to 3100 sq ft of steam radiation (E.D.R.). Air-Conditioning Unit "Selectair" combines in one compact unit every feature desired by home-owners, architects and engi neers for economical heating, air-conditioning and ventilating the modern home. Supplies year-'round hot water for domestic use. Forced circulation of air for summer needs. Equipped with Johnson "Bankheat" Pressure Type Burner. "SeUclair" Capacities and Dimensions of SELECTAIR Units Size Max. Rating* No. Btu per hour 1 125,000 Cu Ft Air per min. '/4S.P. 1,485 Heat Exchanger Btu per hour 105,000 Size Stack Oil Rate Connection Cal per hour T 1 to l'/4 Cabinet Width IT Dimensions Length Height 60' 54' 2 200,000 2,320 166,000 ' . 8' l'/4 to 2 3r 69' 63' 3 300.000 1 3,300 235,000 .9" \ 2 to 2J/4 33" 86' 69' *Total output includes steam to heat exchanger, heat for domestic hot water, and heat available for installed radiation if used. 963