Document LpLGzVrn8qg0rMeYqEXBVxEaQ

Boilers and Radiators UnitedStates Radiator (orroration GENERAL OFFICES: DETROIT, MICHIGAN Manufacturers of Capitol: Boilers and United States Radiators Boston, Mass. Portland, Me. Springfield, Mass. Providence. R. I. New Haven, Conn. Troy. N. Y. New York, N. Y. Brooklyn. N. Y. Branch and Sales Offices Harrison, N. J. Cincinnati, Ohio Philadelphia. Pa. Detroit, Mich. Baltimore, Md. Chicago, III. Buffalo, N. Y. Milwaukee, Wis. Rochester, N. Y. Indianapolis, Ind. Pittsburgh, Pa. Louisville. Ky. Cleveland, Ohio St. Paul, Minn. Columbus, Ohio Kansas City, Mo. Birmingham, Ala. St. Louis, Mo. Des Moines, Iowa Omaha. Neb. Denver. Colo. Portland, Ore. Seattle, Wash. San Francisco, Calif. Assembling Plants located at points indicated by asterisk Manufacturing Plants Located in Following Cities Corry, Pa.; Detroit, Mich.; Dunkirk, N. Y.; Edwardsville, III.; Geneva, N. Y.; West Newton, Pa. GUARANTEED HEATING The problem of boiler ratings has been an acute and perplexing one. Some manu facturers rate their boilers conservatively. Others make extravagant claims. No two determine ratings on the same basis. Associations of heating engineers and contractors have tried to protect themselves. They have fixed certain standards by which published ratings should be judged. But we find the standards in one city conflicting with those of another. Boiler ratings consequently have come to mean little. They cannot be used for accurate comparison between different makes of boilers. They are an uncertain measure of the proper size of boiler required for a certain building. The United States Radiator Corporation has now put an end to all the confusion. In choosing the correct size of boiler for any building there is one, and only one, consideration: will it properly heat the required number of square feet of radiation? The net cast iron radiating surface that each type and size of Capitol Boiler will heat adequately has been definitely determined and is officially published herewith. And we have gone still farther--Capitol capacities are guaranteed in writing. Only the advanced design, the dependability and mechanical accuracy of Capitol Boilers could make possible such a positive assurance of heating capacity. When the needed radiating surface is known and contributing factors checked, the selection of the proper Capitol Boiler becomes simple, sure and safe. GUARANTEE The United States Radiator Corporation will give with each Capitol Boiler sold, an absolute guarantee in writing that it will properly heat its full published amount of direct cast iron radiation provided only that the boiler is connected to a correctly installed system and that the recognized standard requirements listed herein are followed. Should any Capitol Boiler not meet these conditions, the additional capacity necessary will be supplied without charge by the United States Radiator Corporation. STANDARD REQUIREMENTS A guarantee of size of boiler for specified amount of direct cast iron radiation must be based upon certain standard requirements. Direct Cast Iron Radiation: It is assumed that direct cast iron radiation will emit 240 B.t.u. per hour for steam, and 150 B.t.u. per hour for water, therefore, all radiation must be reduced to this heat emission basis. The amount of radiation required on this basis shall be computed as outlined in our catalogue, or from methods adopted by either the Heating and Piping Contractors* National A ssociation, or the American Society of Heating and Ventilating Engineers. Corrections: Under ordinary conditions approximate corrections will reduce the following loads to their equivalent of direct cast iron radiation: Direct-indirect, multiply by.......................................... 1.25 Indirect, multiply by....................................................... 1.50 374 United States Radiator Corporation Boilers and Radiators Blast Coils: Determine condensation in pounds of steam per hour and mul tiply by 4. Heat Value of Coal in B.t.u. per Lb. Factor Heat Value of Coal in B.t.u. per Lb. Factor Heat Value of Coal in B.t.u. per Lb. Factor Domestic Hot Water Supply: Storage tank ca pacity in gallons--for steam multiply by 2; for water multiply by 3.2 Allowances: The boiler 13,000 12,500 12,000 11,500 11,000 1.00 1.07 1.14 1.21 1.29 10,500 10,000 9,500 9,000 8,500 1.37 1.46 1.56 1.67 1.79 8,000 7.500 7,000 6,500 6,000 1.92 2.06 2.21 2.36 2.53 size guaranteed for direct cast iron radiation includes allowances for heat loss of piping system and peak load. Where the actual AMOUNT OF DIRECT CAST IRON RADIATION EACH CAPITOL BOILER IS GUARANTEED TO CARRY Boiler Size Direct Cast Iron Radiation No. Load. Sq. Ft. Boiler Size Direct Cast Iron Radiation- No. Load, Sq. Ft. surface in square feet of the piping system exceeds 25 Steam | Water Steam | Water per cent of the direct cast Capitol Boilers--Square Type iron radiation for steam, or 35 per cent for water, addi tional allowances shall be made for the extra surface. Draft: The boiler shall be attached to a chimney providing sufficient draft to consume with proper com bustion the required amount of fuel per hour. 184 185 186 187 204 205 206 207 255 256 200 300 400 500 350 500 625 750 750 925 330 495 660 825 580 825 1030 1240 1240 1525 - 238 239 240 4106 4107 4108 4109 4110 4111 WN276 2100 2400 2500 2000 2500 3000 3500 4000 4500 3700 3465 3960 4125 3300 . 4125 4950 5775 6600 7425 6105 Fuel: The size of boiler 257 1125 1855 WN277 4300 7095 recommended is based upon 258 1300 2145 WN278 4900 8085 the use of a free-burning C276 800 1320 WN279 5500 9075 coal not smaller than nut C277 980 1620 WN280 6100 10065 size and having a heat value G278 1160 1920 WN28J 6700 11055 of at least 13,000 B.t.u. C279 1350 2220 WN282 7300 12045 When the coal to be used 235 1200 1980 WN283 7900 13035 has a heat value less than 236 1500 2475 WN284 8500 14025 13.000 B.t.u.. the direct 237 1800 2970 cast iron radiation shall be Capitol Boilers--Smokeless Type multiplied by the factor corresponding to heat value of the coal. 627 727 827 1000 1225 1450 1650 2020 2390 1140 1240 1340 4500 4900 5400 7425 8085 8910 Capitol Dependable Smokeless Boilers 927 1027 1127 1675 1900 2125 2760 3135 3505 750 4700 850 5350 950 - 5850 7755 8825 9655 combustion of bituminous coal at the lowest cost is now assured with a new degree of certainty by Capitol Smokeless Boilers. 1227 740 840 940 1040 2350 2500 3000 3500 4050 3875 4125 4950 5775 6680 1050 1150 1250 1350 6500 7000 7650 8150 10725 11550 12620 13450 ' "Smokeless" simply means complete combustion. And all of the carbon which forms stand second to no other boiler. smoke cannot be burned without the correct amount of air, Capitol assembly, testing, and marking insure correct oxygen. The auxiliary inlets that supply air for completing com installation. No more skill or attention is necessary to stoke them for the smokeless, low-cost consumption of all bustion in Capitol Smokeless Boilers bituminous coals including lignite are not dependent upon the skill, than is required to fire ordinary guesswork or memory of the fireman. Their size for each boiler rating is definitely determined in the Capitol Testing laboratory and permanently fixed at the factory. They need no adjusting. The intensity of the fire itself governs the amount of air drawn in. To further assure ac curacy, every Capitol auxiliary inlet is always an integral part of a single boiler section and is never placed between two sections where faulty assembly will cause a variance. This mechanical precision of com bustion which eaves fuel and minimizes smokeless uncertainty is typical of every detail in the pro gressive design and careful construc tion of Capitol Smokeless Boilers. anthracite-burning boilers. The simple coking method of firing is all that is needed (pushing a portion of the incandescent coals back and putting the green fuel in front). The main air supply is admitted under the grates and through the fuel bed. After passing through four inches of live coals the oxygen in the air becomes exhausted. ' Additional air is taken from the ashpit, and drawn up through carefully propor tioned and permanently fixed pas sages in the front'of the boiler which open at a point fust above the fuel bed. As the heated air and volatile gases, distilled from the fuel, rush toward the back they,_aro deflected downward by a Curtain section. Capitol Smokeless Boilers--50" Series No. 1150 Capitol Smokdeos Boiler Then, as they pass under, they are again charged with preheated air from another inlet in the Curtain. For economy of fuel, ease of opera tion and dependable beat in buildings requiring 4700 to 8150 " - In boilers of eleven sections or larger, a bridgewall (which is designed for a fire-brick lining) square feet with steam heat or. 7755 to 13,450 square feet with hot water, Capitol Series 50-inch Smokeless Boilers retards their progress and in smaller sizes they meet the back wall. The fresh oxygen and heated volatile gases are 375