Document g2M0xMKejRno45ny3nKwKjpnq

AIA FILE N O . 3 4 -B -l (JULY, 1958) Kewanee 28893 AIA FILE N O . 3 4 -B -l (JULY, 1958) hour--212F power sq 1; sq ft tb sq ft sq It gph MBluh 6440 10300 1646 69 1969 If 246 > \/ ' V 83 \_________PERCENT THERMAL EFFICIENCY 60 BO 100 130 140 160 PERCENT BOILER RATI ERG It's easy to "put your finger" on the over-ail effi ciency of the Kewanee-lron Fireman Unit. Every gallon of oil or cubic foot of gas which goes into it contains a certain amount of heat. And that amount of heat is capable of producing a known amount of energy ... an amount accurately measured by the quantity of water evaporated into steam. The largest part of heat generated is absorbed by the boiler. In actual practice this amounts to at least 80%. With the Kewanee-lron Fireman Unit an over-all efficiency has beer, proved by many tests and 80% is certified. Actually, under normal boiler room conditions, higher efficiencies can be attained and retained throughout the entire firing range. Con.ri.jit :D:>8 S^itJTy Co'Doratior. Kewanefl 0O'ler Divi 28894 IRON FIREMAN r:s : O ! ! |\l j T Kewanee and Iron Fireman engineers have produced a perfectly integrated unit, with firing rate matched to heating surface .. .flamesize, shapeand swirl matched to furnace tube. Certified ratings are based on approx imately 5.5 square feet of heating surface per boiler horsepower. S.B.I. ratings allot 8.2 square feet, for 50% reserve capacity to meet peak loads--provide "cruising speed" operation under normal loads for greater efficiency, longer life. Normally, the boiler is shipped first--to be installed in position before walls and roof are completed. The burner arrives later, when it can be fully protected against weather, theft and accidental damage. All con trols are wired and in place for fast, simple mounting. Whenever specified, however, the unit is fully as sembled and fire-tested at the factory, then shipped as a complete package. HIGH PRESSURE UNIT 52 to 651 hp 125-150 lb wp high temperature water above 250 LOW PRESSURE UNIT 1,546,000 to 21,855,000 Btuh 15 lb steam or 30 water 250 maximum Incoming fuel enters the oil heater (A), a multiplepass tubular heater with temperature regulating con trols, instruments and necessary valves. Heavy oil is automatically kept at the correct temperature for effi cient combustion. Fuel is fed to the burner by the oil volumeter (B), a positive displacement, variable-volume pump sub merged in the oil reservoir. A simple, positive mecha nism controls length of piston stroke, metering by positive displacement the exact quantity of oil needed for varying loads. No regulating valves or viscosity compensating devices are required. Fuel mixes intimately with air in the Venturi combustion throat (C). Throat and chamber are refractory-lined. Flame shape is accurately controlled, with adjustable vanes imparting correct rotation to match furnace configuration. Ample combustion air is provided by the forced-draft fan (D)--with no need for high stack to induce draft. Low-speed, ball-bear ing, motor-driven fan is exceptionally quiet. Fan is easily accessible. All combustion controls are completely assembled, wired and tested at the factory, then fully enclosed in a complete control pane/ (E) for protection against dust and damage. All wiring from panel to motors and instru ments is installed and tested. Flame swirls through furnace tube (F), corrugated on high pressure units to provide greater strength and increased heating surface. Also, expansion and con traction of corrugations crack off scale on water side for continued fast heat transfer , . . high boiler effi ciency. INSET: Low pressure unit has plain furnace tube, welded to flanged openings in tube sheet for greater flexibility and strength. Rear combustion chamber (G) in high pressure unit is heavily lined with insulating-type refractory (shipped in place) to aid combustion, retain heat . . . maintain efficiency. INSET: Low pressure unit features wet back design, with water completely surrounding rear combustion chamber. Refractory is not required. Both high pressure and low pressure units feature access opening in rear combustion plate. Hot gases enter fire tubes (H) of heavy gage steel, 3'' in diameter, set into trepanned holes in head by roller expander with ends firmly rolled and beaded. Spinner blades (I) in all tubes swirl hot gases against tube surfaces for longer gas travel and maximum heat transfer. Gases exit through welded, gas-tight, smoke-box equipped with quadrant lock damper (d). Water circulates rapidly around furnace tube and through wide spacing between fire tubes (K). Steam bubbles rise freely to water surface to disengage quietly. Low water line provides larger--and therefore non-turbulent--disengaging area . . . also provides larger steam space fL) for ample reserve of dry steam. Head braces (M) are secured by exclusive one-piece, forged ends extending through boiler shell and heads. This eliminates hidden welds and assures positive dependability. Welded shell (N) is of flange steel . . . heads and furnace tube are of firebox quality. Insulated metal jacket is optional at extra cost. Boiler construction meets or exceeds A.S.M.E. code requirements. Entire boiler-burner unit is approved by Underwriters' Laboratories, Inc. COMBINE GAS AA D O O? I j ___ * U u? t\ f \ 5V fZT flip t._ 5 \ 28895 TWO-PASS GAS TRAVEL through large furnace tube provides more primary heating surface and numerous 3" fire tubes means greaterflue area--less resist ance to draft. Less power is needed for blower ... yet spinner blades in tubes force all usable heat from gases for efficiency of 80% or higher. With no baffles to burn out (short-circuiting gases directly to vent) costly and frequent baffle inspec tion and repair is eliminated. Shutdown time is saved. Uniform temperature over entire surface of tube sheet avoids distortion ... possible leakage around tubes. CAST IRON FLUE DOORS mean fast, simple access . . . permanent gas-tight fit. Doors are cast in Kewanee's foundry, then precision-machined to close tolerances. An asbestos gasket completes the seal--even the thinnest tissue paper placed in door before securing cannot be pulled out! Special locking clamps release or tighten quickly . . . doors swing on hinges clear of burner, controls and trim. Access to rear of fire tubes is provided through door on rear cover plate--plate need not be removed. All water surfaces are accessible through manhole and hand holes, with wide spacing between tubes aiding in fast, thorough cleaning. PRECISION WELDING provides completely dependable joints on both low pressure and high pressure units. High pressure joints under tension are radio graphed by high-voltage X-ray to detect possible faults. Although not required by A.S.M.E. code, Kewanee goes farther and X-rays certain vital compression joints to double-check dependability. After welding, high pressure boilers are heated in a furnace to 1200 F. to stress relieve welds and formed sections. Final check is a hydrostatic test at one-and-a-half times the design working pressure. FERFORHUNCC HEAVY OILS are fired dependably in the Iron Fireman Rotary Oil Burner through a patented fuel oil conditioning system with effective preheating at all times. In addition to the steam or hot water preheater, this exclusive oil conditioning sys tem maintains more uniform temperature than other systems and keeps oil fluid during shutdown for instant starting. Entrained air and gases are separated from the oil and vented through the return line . . . water condensate in oil is completely emulsified by rotation of the Oil Volumeter . . . thus eliminating two causes of erratic firing. RING TYPE GAS BURNER surrounds rotary oil burner for combination oil-gas firing. The flip of a switch changes controls from one fuel to the other. Multi-jet construction gives intimate mixing of gas and air in burner throat ahead of the combustion zone. Annular type inlet volume control system, combined with air control vanes at throat entrance, provides positive regulation of air volume, distribution, and rate of flame rotation. Operates with low pressure or high pres sure gas . . . highly efficient at all rates. AUTOMATIC CONTROLS are housed in afully enclosed control panel. Starters for all motors and pumps are here, with shutoff devices to insure safe, eco nomical operation. If water drops to unsafe condition, burner shuts down in stantly. The main fuel valve is not opened until the boiler is purged of any unburned gases and a safe pilot is proven. In the event of flame failure, the electronic scanner shuts down the burner at once and flashes a warning light. 28896 Your boiler is vital--and Kewanee knows it! Since 1868 Kewanee Boilers have been built to play vital roles. Today's Kewanee Scotch Boilers are reliable sources of low cost hot water or steam for plants and buildings everywhere. They are easy to fire, easy to inspect, easy to keep clean and efficient. COMBINED Fuel becomes fire--quietly, smoothly, efficiently-- with an Iron Fireman burner drawing-board-matched to its Kewanee Boiler teammate. A pioneer in the de velopment and application of automatic firing equip- mentfor gas, oil and coal, Iron Fireman Manufacturing Company has held a position of leadership in this field for over 30 years. __ _ _ 28897 GAS AND OIL BURNER lrU -B-------------------------- A-------- ------ ,HV------------ 1 ii ! Low ratings unit number SBI rating--Horsepower --steam --MBluh --sleam per hour--212F net rating--steam -- water. --MBtuh. certified output--horsepower --MBtuh firing rate--oil* --gas K IF sq ft sq M lb sq ft SQ It gph MBtuh 78-25+ 79-26t 8440 10300 1546 59 1969 16 2460 7160 11460 1718 66 2188 18 2740 80 25 52 7290 11660 1750 1790 8580 13730 2059 78 2625 22 3280 81-25 61 8500 13600 2040 2100 10000 16000 2400 92 3060 26 3830 82-35 74 10330 16520 2479 2550 12160 19460 2918 111 3718 31 4650 83-35 87 12150 19440 2916 3000 14300 22880 3432 131 4374 37 5460 > t 1 1 | 1 | i 88 50 109 15180 24280 3643 3760 17B60 28580 42B6 164 5464 46 6840 85-60 I 130 18220 29150 4373 4490 21440 34300 5146 ` ; I | ! 1 | 195 6559 54 8200 86 60 152 21250 34000 5100 5240 25000 40000 6000 228 7650 64 9560 87-76 174 24290 38860 5830 6000 28580 45730 6859 261 8745 73 10920 88 100 217 30360 48570 7286 7490 35720 57150 8573 326 10929 91 13670 89 125 261 36430 58280 8743 9000 42860 68580 10286 392 13114 110 16400 90 125 304 4250Q 68000 10200 10490 50000 30000 12000 456 15300 127 19120 91 165 347 48570 77710 11657 11970 57140 91420 13714 ----- 521-4 17485 146 21900 92 165 390 54640 87420 13114 13460 64280 102850 15427 585 19671 164 24600 dimensions A--length overall** B--lenglhaverall*** C--width overall D--steam supply height. E--smoke outlet height. ft in ft in ft-in fl-m lt-m 13 2 15- 4 5 10 67 6-9 14- 1 16 3 5-10 6- 7 6-9 14-1 16 3 6-1 70 7 1V? 15-314 17-514 61 70 7-114 15 7 17-9 67 7-614 7-7 17-3 19 5 67 7-61* 77 1 18- 5 1 20-1014 171 8- 1 1 8- 114 18-1014 21 4 7- 8 8- 6 8- 6 20-1014 23 4 7- 8 a- 6 86 Based on 150 000 Blu oil **Control panel on side Control panel in front 178-25 and 79 25 lor low pressure only Dimensions are approximately correct for low pressure unit Above dimensions and drawings are high pressure unit and represent the maximum tor a*' units for compleie specifications see Catalog Bulletins 3301 3 and 3302 3 19-1115 22 5 8- 2 8 1114 8-im 21 11 24-1114 8- 8 9- 6l4 9- 5 22-11 25-1114 9- 2 10- 114 10- 0 22-11 25-llV? 910- 7V, 10 5 V? 25 9 10-0 11-0 10-9 26-5 10-4 11-4 ni 93 166 434 60710 97140 14570 14970 71420 114270 17141 651 21855 182 27300 27 1 10-8 11-8 11-5 Kewanee-lron Fireman Boiler-Burner Units earn owner confidence through the longestablished reputation of both manufacturers . . . the high quality of design, materials and workmanship found in every component of the units . . . and the wide-spread and ca pable service organization backing up the units in the field. Over 600 branches and distributors in 48 states provide the skilled personnel to recommend, order and install Kewanee-lron Fireman Units--and to make certain each unit continues to operate effi ciently and dependably throughout its long performance lifetime. -or rn Nc 11 35 28898 LITHO IN U.S.A. L.P.C.