Document vVR2q2wYBY1pojLOXmyDM86B8

cast iron boiler for use with all fuels 1958| 1 ^ the A-7 cast iron boiler--expertly engineered--durably constructed The A-7 is a compact, high-capacity, cast iron boiler developed by American-Standard for use with all fuels. Primarily de signed for oil firing, it is also available in models for stoker and hand firing and is converted easily from one fuel to another. The A-7 is ideal for hot water or steam heating in all commercial and industrial buildings, and may be installed singly, or in battery, to cover a wide range of heating require ments. economically and efficiently. It combines such fea tures as time-defying cast iron construction; completely new section design, outstanding I = B = R approved steam and water ratings, a unique steel sub-base; and maximum internal circulation to assure years of dependable heating. New section design--peak internal circulation--One of the most important features of the A-7 is its completely new, research-engineered section design Upward and out ward flow of waterways, combined with a high water level, assure top-flight internal circulation which results in faster, smoother steaming. Special arrangement of fins on each section and the crown sheet provides an extra-large area of heating surface resulting in rapid heat transfer to boiler water. Combustion gases flow forward through outside flues, then rearward through center flues for maximum concentra tion and thorough flue travel Modern styling, rugged construction, exclusive steel pedestal base - The A-7 is unusually compact in size. Ruggedly constructed cast iron sections, which are easy to handle and assemble, fit conveniently into the regular cast iron boiler base. In addition, a completely new, exclusive, steel pedestal base has been developed for the A-7 to save installation time and costs! Available as an optional feature, the base creates the additional height and combustion area necessary for oil and stoker firing-eliminates the expense and labor of digging a floor pit or constructing a special fire brick base. An attractive steel jacket, finished in Forge Red and black, encloses the A-7--gives it a smart, clean look High I = B = R outputs --wide range of sizes, models -The A-7 is available in automatic and hand-fired models rang ing in size from 5 to 12 sections. It develops gross l=B=R outputs from 866 Mbh to 2454 Mbh, making it ideal for large hot water or steam installations Hand-fired models of the A-7 incorporate smooth operating grate assembly, conveniently located shaker handle and large fire and ashpit doors to facilitate firing and simplify boiler maintenance. Highly economical fuel-saving operation is achieved on all handfired models by a Barocheck damper control - standard equipment with the A-7 hand-fired boiler. 00898 ^r -v, <"c leek these important features 1 Highly fficieot cast iron sections Of the A-7 incOfpOT3te 3 newly ^designed and scientifically engineered upward and outward flow of ^Waterways, plus a partially submerged upper nipple, to provide the best *fnal circulation and peak heating performance This unique arrange lent of waterways means uninhibited circulation of water throughout the )iler--prevents water tag in pockets The new section design also events collection of sediment which often impedes circulation Each on is lined with multiple fins to achieve maximum heat extraction }-from hot combustion gases Special downward slope of the fins prevents .IOOt collection--keeps boiler cleaning and maintenance at a minimum pTo assure years of dependable performance, each section is factory at two and one half limes normal operating pressure Another ^feature is that rear sections of all models of the A-7 have strategical!) f located 3*mch external water heating tappings Tnis arrangement eliminates costly header piping usually required for external water heaters connected to boilers with side tappings in sections Steal pedeitol bate provides for last. lOw-COSt toiler installation This unique optional equipment provides the additional base heights required (or oil and stoker firing and eliminates the costly and time consuming operation of digging a floor pit or building a specially constructed fire brick base Consisting of four separate steel channels the base provides the additional height and combustion area required for automatic firing Assembly of the base is accomplished by bolting the corners of the steel channels together quickly and easily with corner tie rods The special base is available in 8 and 10 inch heights depending on the size of the boiler H ts assembled, then placed in posi non to form a sturdy foundation for the regular 12-mch base of the boiler Compacl construction of the A 7 cast iron boiler, plus the ready-made sieel pedestal base permits time-saving low-cosi installations designed for years of continuous dependable, economical and highly efficient heating performance All models of the A-7 Ail-Fuels Boiler by American-Standard have ratings approved by the Insti tute of Boiler and Radiator Manufacturers and are constructed of durable time-defying cast iron to the specifications of the American Society of Mechanical Engineers. 00899 _jacket_sturdy 20-gauge steel with attractive tforge Red and black finish completely encloses Tboiler, gives installation a neat, compact ap pearance. j--safety relief valve -- A.S.M.E. rated and fur nished as regular equipment on all models. j_high water level-assures proper internal - circulation of water throughout boiler. Extra large nipples extend below water line providing fast, cmooth steaming. Rear sections are provided with tappings for external water heaters. 4-finned heating surfaces--extract maximum amount of heat from combustion gases for rapid transfer to boiler water. Special downward slope of fins on flue and crown sheet surfaces prevents soot collection, minimizes boiler cleaning. 5- baffles-flue baffles channel and deflect hot combustion gases for efficient, thorough heating of all boiler surfaces. Flue baffles provided for 5-7 section oil-fired boilers only, a-extensive flue travel-forward through out side flues, rearward through center flues assures maximum concentration of heating gases. 7--cleanout and service doors-large size for easy access to boiler sections and flue surfaces. Machine ground and constructed of sturdy cast Iron, they keep boiler airtight, simplify boiler cleaning. S -- sections-constructed of rugged cast iron and factory-tested at 2V2 times normal operating pressure to assure positive performance. 9 -- insulation -- heavy Fiberglas insulation keeps hot gases in boiler, saves fuel and prevents excessive heat loss. 10-combustion area-scientifically designed and correctly proportioned for oil firing; also provides top heating performance for automatic or handfired boilers. ft--tight joints --all contacting surfaces of sec tions are machine ground to a smooth finish; metal-to-metal contact of sections assures tight fit, prevents air infiltration from interfering with combustion. u-base opening plate-constructed of sheet steel; permits rapid installation of burner or stoker for automatic firing. Hand-fired models equipped with regular cast iron ashpit door. 11-water content-all sections water backed for peak heating performance. Correctly balanced foi rapid heat transfer fjom hot gases to boiler water, la-observation port-for oil boilers permits con venient flame viewing without opening boiler doors; simplifies burner and control adjustments nil* boiler is firing. dimensia ns --inches number of sections dimensions CL 5 34% 41% 6 42y8 49 7 49*8 56l/2 8 57 Vi 64 9 64% 71% 10 72% 79 11 79% 86% 12 8 7 Vi 94 number of 4" flow tappings number of 6" return tappings 22 32 32 32 42 42 42 52 assem blage of sections boiler number arrangement of sections A 705 A 706 A 707 A 708 A 709 A 710 A 711 A 712 FX, C, C, C, BX FX, C, CX, C, RC, BX FX, C, C, CX.C, RC, BX FX, FC, C, CX, C, RC, RC, BX FX, FC.CX, C, C, CX, RC, RC, BX FX, FC, CX, C. C, CX, C, RC, RC, BX FX, FC, FC, CX, C, C, CX, RC, RC, RC, FX, FC, FC, CX, C, C, CX, C, RC, RCX, legend: FX--Front Connecting Section C-Center Section CX-Center Connecting Section FC-Front Center Section RC-Rear Center Section RCX--Rear Center Connecting Section BX--Back Connecting Section contro 1 ap olications location size on boiler inches steam water A4 Water Heater-External Type B 6 Water Heater-External Type Water Heater-External Type C 1 Damper Regulator-Hand Firing D 2% Pop Safety Valve Relief Valve E 3 Blow-Off or Pop Safety Valve Water Heater-External Type F 3 Water Heater--External Type Water Heater-External Type G 3 Water Heater-External Type Water Heater-External Type H % Steam Pressure Limit Control Water Temperature Limit Control K 2% Low Water Cut-Off L Water Temperature Control, Water Temperature Control, Domestic Hot Water Domestic Hot Water M 1 Vi Nipple Port Inspection Tapping Nipple Port Inspection Tapping A 4 1r0>s taoomf E r G B ;p,n; 00901 J7 ratings oil fired net 1 = B = R ratings boiler number eteam water eteem mbh aq ft water mbh * A-705-SO A-706-SO A-707-SO A-708-SO A-709-SO A-710-SO A-711-SO A-712-SO A-705-WO A-706-WO A-707-WO A-708-WO A-709-WO A-710-WO A-711-WO A-712-WO 649.7 759.2 897.2 1041.6 1203.1 1361.2 1518.6 1667.7 2707 3163 3738 4340 5013 5672 6328 6949 649.7 759.2 897.2 1041.6 1203.1 1361.2 1518.6 1667.7 Crown sheet refractory biffle furnished on S section oit fired boilers only. stoker fired boiler number steam water A-705-SC A-706-SC A-707-SC A-708-SC A-709-SC A-710-SC A-711-SC A-712-SC A-705-WC A-706-WC A-707-WC A-708-WC A-709-WC A-710-WC A-711-WC A-712-WC net l = B = R ratings steam water mbh sq ft mbh 649.7 759.2 897.2 1041.6 1203.1 1361.2 1518.6 1667.7 2707 3163 3738 4340 5013 5672 6328 6949 649.7 759.2 897.2 1041.6 1203.1 1361.2 1518.6 1667.7 gross |=B = R output mbh 866 1012 1196 1376 1570 . 1760 1956 2148 gross 1 --B = R mbh 866 1012 1196 1376 1570 1760 1956 2148 l=B=R burner capacity gph 8.15 9.55 11.25 12.90 14.65 16.30 18.00 19.65 chimney size inches height feet 16x 16 16x 16 16x20 16x20 16x20 20x20 20x20 20x20 28 30 36 42 45 50 55 60 l=:B = R lbs per hr 95 111 131 151 172 194 215 236 inches 16x 16 16x 16 16x20 16x20 16x20 20x20 20x20 20x20 height feet 28 30 36 42 45 50 55 60 hand fired boiler number steam water A-705-S A-706-S A-707-S A-708-S A-709-S A-710-S A-711-S A-712-S A-705-W A-706-W A-707-W A-708-W A-709-W A-710-W A-711-W A-712-W net 1 = B= R ratings steam water mbh sq ft mbh 625.4 744.3 894.0 1042.1 1202.0 1363.5 1518.2 1667.3 2606 3101 3725 4342 5008 5681 6326 6947 625.4 744.3 894.0 1042.1 1202.0 1363.5 1518.2 1667 3 gross mbh 1122 1298 1510 1708 1910 2108 2288 2456 Note All si2es and models of the A 7 Boiler have tappings for external-type domestic water heaters American-Standard A-7 Boilers are another development in hydromes-the science of heating and cooling with water. l=B=R h ii rnr r lbs per hr _ _ _ _ _ - size inches 16x 16 16x20 20x20 20x20 20x20 20x24 20x24 24x24 height feet 40 45 50 55 60 65 70 75 American-^Standard PLUMBING AND HEATING DIVISION AMERICAN RADIATOR 1 STANDARD SANITARY CORPORATION AO WEST 40TH STREET NEW YORK 18, NEW YORK tilho in U S A 00902