Document mmO0qjdJkOML4Dk61oEB7rprO

Heat-Surface (Fan System) The G & O Manufacturing Company 138 Winchester Avenue New Haven, Connecticut <*$0 INDIVIDUAL FIN TUBING for Unit Heaters (high and low pressure), Concealed Radiation, Refrigeration Condensers, Evaporators, Intercoolers, After coolers, Cooling Units, and other Heat Transfer Products. Individual G & O Fins--The use of individual fins results -in high efficiency in heat transfer from primary tube surface to secondary fin surface, because all G & O fins have ample collars around the tube opening insuring 'liberal contact with tubing. Any Size or Shape--Fins of any size or shape may be obtained giving any desired proportion of primary and secondary radiating surface. Square Fins--A square fin has about 30% greater surface than a round fin of a diameter equal to a side of the square. 8-Past Condenser Individual Fins--Individual fins permit of. any fin spacing: also, of using fins in groups at intervals along tubes. Fins placed at practically any angle on tubes. Various Shapes--G & O individual fin tubing is furnished in straight lengths: in U bends with short radii: in continuous return bend coils, or other shapes. Ends of tubes may be left free of solder for mechanical joints. G & O Individual Fin Tube Data Standard Sizes Fin Surface O.D. of Tube Fin Size Spacing per linear Inch Foot >/' '/*. '// 1' '/< i. Vt" >q. W rU Wl' r'd. W q. T/l'r'A 6 0.59 sq. ft. 6 0.81 sq. ft. ' 6 0.64 sq. ft. 6 1.61 sq. ft. 6 2.50 sq. ft6 4.00 sq. ft. 5 3.55 aq. ft. 688 Healers, Unit American Foundry Equipment Company Mishawaka, Indiana, U. S. A. Manufacturers of Industrial and Domestic All-Electric Unit Heaters Experience of hundreds of users and many operation tests by power and public service interests, insurance companies, United States Government and other authorative institutions have proved that the American All-Electric Heaters are practical for hundreds of varied applications. They incorporate the unit heater principle in which forced air circulation provides uniform temperature. They are clean, convenient, instantaneous, efficient, fully automatic and portable. The low initial cost and minimum installation expense enables economical heating for many applications. The heart of the American Heater is the heating unit. This consists of a helicoil, sheathed wire type (Calrod) of resistance heater element cast integral with an aluminum alloy fin type grid. The heat transformed from electric energy is quickly conducted through the finned area of the heating unit and is carried off by the forced air circulation. The operating tempera ture of the unit is comparatively low and with the special cut-out switch, absolute safety is assured. In addition to the industrial type, the American Heaters are made in domestic models. The built-in type and the por table model are both ideal for home use where occasional heat is required. Write us for complete information on the American Line of heaters INDUSTRIAL HEATER Model No. 83-12 83-15 83-18 84-20 84-24 84-30 84-40 12-6 12-9 12-12 18--135 18-1575 18-18 18-27 24-36 24-42 24-48 24-60 K.W. 1.2 1.5 1.8 2.0 2.4 3.0 4.0 6.0 9.0 12.0 13.5 15.75 18.0 27.0 36.0 42.0 48.0 60.0 C.F.M. 75 95 95 150 150 210 210 375 560 625 1055 1055 1055 -1410 2815 2815 3130 3130 B.T.U. 4,098 5,122 6,147 6,830 8,196 10,245 13,660 20,490 30,735 40,980 46,102 53,786 61,470 92,205 122,940 143,430 163,920 204,900 RATINGS ELECTROMODE E.D.R. 17.1 21.3 25.7 28.5 34.2 42.7 57.0 85.4 128.0 170.8 192.1 224.1 256.1 384.2 511.8 597.6 683.0 853.8 Model K.W. C.F.M. B.T.U. E.D.R. A1200 A1600 A2000 B3000 1.2 110 4,098 17.1 1.6 110 5,464 22.8 2.0 HO 6,830 28.5 3.0 180 .10,245 42.7 All models supplied either for 2 in. by .4 in. or 2 in. by 6 in. stud mountings. THERMOFAN Model Switch Current P Plug in Type II0V-A.C. I Heat Switch in Base 110V-A.C. 2 Heat and Fan Switches in Base 110V-A.C. All models either 1000--1200--or 1600 Watts. 689 N/