Document 9Gmzza5DOOb6X7E7mJkOr3nL

Heating Systems. Boilers, steel Johnston Brothers, Inc. ESTABLISHED 1864 Member Ferrysburg, Michigan u.Rag. S. Pot. Off. "PACKAGED" STEAM BOILER UNIT FOLLY AUTOMATIC OIL OR GAS OR COMBINATION OIL AND GAS WATER-BACK TYPE, FORCED DRAFT, THREE-PASS, TROUBLE-FREE, EFFICIENT. Catalog-Rating guaranteed. HIGH PRESSURE TYPE from 75 to 750 hp and pressures of 125, 150 and 200 lb psi (250 lb available as a special). LOW PRESSURE TYPE for heating; 15 lb pressure, and EDR rating from 2190 sq ft to 42,500 sq ft steam. ASME Code construction. Under writers' Laboratory and Factory Mutual Approved. Specification Forms in detail to exactly cover the requirements of any particular job will be furnished upon request and without any obligation whatever. Ask for Bulletin 609 A Standard Scotch Boiler Water-back Type, Natural Draft. Firebox Heating Boiler, Compact Type. Oil, Gas, Stoker or Hand Firing. ThreePass, 15 lb pressure, ASME Code. Capacities 2190 to 42,500 sq ft, SBI rat ing. Ask for Bulletin 1600. Also built for High Pressure (125 psi.) Ask for Bulletin 708. POWER, PROCESS, HEATING 25 to 300 hp and pressures 15 lb to 200 lb psi. For mechanical firing with Coal; Gas or Oil. Overloads up to 200 percent, of rating readily developed. Oil or Gas firing equipment and controls can be in- 1 stalled for completely automatic opera tion and in emergency or fuel scarcity, can be readily converted to Coal firing. Ask for Bulletin 4000 and 9000 and 960r0;.. 376 Heating Systems Orr & Sembower, Inc. Established 1885 Morgantown Road, Reading, Pa. Boilers and Burners PACKAGED AUTOMATIC BOILERS Powermaster boilers are modern, com pact, self-contained,, automatic units with an outstanding record for highly dependable and efficient performance in public buildings, hospitals, schools, apartments, industrial plants and other installations. Two models are available in 17 standard sizes of 15 hp to 500 hp for steam generation to 250 psi, and for hot water to 30 psi. These boilers are thor oughly factoiw-tested under fire, ap proved by underwriters' Laboratories, Inc., and fully guaranteed by Orr <fc Sembower, Inc. aw a 15 20 30 ' 40 50 60 70 80 100 125 150 200 250 300 350 400 500 BOILER OUTPUT OVERALL DIMENSIONS LB/HR Steam From/At! 212F I EDR (Water) Sq. Ft. i | EDR (Steam) ILength Sq. Ft. Width Height 517 690 1,035 1,380 1,725 2,070 2,415 2,760 3,450 4,312 5,175 6,900 8,625 10,350 12,075 13,800 17,250 3,336 4,448 6,672 8,896 11,120 13,344 15,568 17,792 22,240 27,800 33,360 44,480 55,600 66,720 77,840 88,960 111,200 , 2,085 2,780 4,170 5,560 6,950 8,340 9,730 11,120 13,900 17,375 20,850 27,800 34,750 41,700 7'3' 87' .97' 10'5' il'9' ll'O' 12'0" 13'4' 127' 1370' 14'7' 17'6' 15'7' 17'5' 55,600 1870* 69,500 I 197* S'O* 3'0* 3'7' 4'7' 4'7' 47' 47' 47' 5'5' 5'5' 6'6' S8''O0"' 9/0' O'O' 9'Q' 5'4' 5'4' 67' 6'9* 6'9' 7'5' 7V 7'5' 87' 87' 9'5' 107' 107' 117' 117* ll'll' APPROX. FUEL APPROX WEIGHT CONSUMPTION (100% of rating) EMPTY Lb. 2,700 3,000 3.750 6,350 6.750 7,900 8, 00 10.700 12, (0J 14.000 17,350 22,100 25,560 33.700 36,500 37.000 45.000 02 Oil *6 Oil 10C0 Btu Gal./Hr. Gal./Hr. Gaa Cu. Ft./Hr. _4.6 628 6.1 -- 837 9.1 -- 1,255 12.1 10.8 1,674 15.2 13.5 2,092 18.2 16.2 2,511 21.2 18.9 2,929 24.3 21.6 3,347 30.3 27.1 4,148 38.0 33.8 5,230 45.5 40.6 6,277 60.6 54.1 8,369 76.0 57.7 10,461 91.0 81.2 12,553 106.1 94.7 14,645 121.3 108.3 1 16,737 151,6 1 135.3 | 20,922 emciency when burning No. 6 oil with heat of. 149.000 Btu/gal., and on 80% fuel-to- sveam efficiency when burning all lighter oils with o. i calculated on the basis of 138,000 Btu/gallon. Published fuel consumption, figures of gas-fired Powermaster are based on 80% fuel-to-steam effi ciency. Actual field performance will vary widely with chemical composition, specific gravity, other particular fuel characteristics, and local firing con ditions. - vnaA-rAB. is a compact packaged automatic heating boiler (steam or hot water) with outstanding advantages for many industrial, commercial and institutional needs. Completely factory-assembled and fire-tested sizes of 15,20 and 25 hp avail able with industrially-rugged gas, oil or combination burners, and heating coils for instantaneous or storage tank hot-water service. Multiple-unit installations more advantageous than |arge single boiler. Factory-insulated steel boiler, last steam ing, instant response to demand changes, 5 sq ft of heating surface {ASME) per hp, automatic operating and safety con- R trols, highly efficient, clean and quiet, forced draft, delivered ready for operation when connected to electric, water, fuel and simple vent for combustion gases--no costly chimney needed. U.L. listed. 377