Document gDxE9BDkeXKgvBZ6dx5XVR9N3

Boilers, Cast-Iron National Radiator Corporation MANUFACTURERS OF BOILERS, RADIATORS AND CONVECTORS Johnstown, Pa. National Service through these Branch Offices and Warehouses: Baltimobe, Md... Boston, Mass... BUFFALO. N. Y----- Chicago, III.....-- Cincinnati, Ohio... Cleveland, Ohio... _2622 Matthews St. _____ 250 Stuart St. ...904 Main St. ........1111 East 83rd St. 3530 Spring Grove Ave. __ 4500 Euclid Ave. Milwaukee, Wis. 511 E. Mason St. New Yore, N. Y.. .55 West 42nd St. Philadelphia. Pa .2124 Arch St. Pittsburgh, Pa.._ .................. 339 Blvd. of the Allies Richmond, Va...... _____3032 Norfolk St. Washington, D. C............................... -2205 Fifth St. N.E. AERO CAST IRON CONVECTORS The Convector with a Guaranteed Rating Tested and Rated in Accordance with the A.S.H.V.E. Standard Code for Testing and Rating Concealed Gravity Type Radi ation (Steam Code). U. S. Patents No. 1,888,545 No. 1,912,556. Other Patents Pending A message to Heating and Ventilating Engineers, Heating Contractors and Architects Aero Convector Ratings Aero Convectors are rated in accordance with the American Society of Heating and Ventilating Engineers' Standard Code for Testing and Rating Concealed Gravity Type Radiation. / u . These Ratings are based on the Condensation from the convector, the Latent Heat in the steam and the Correction Factor as provided in the Code. The Catalog Ratings of Aero Convectors are Guaranteed when: 1. The Convectors are used with enclosures having dimensions as shown in the current catalog. 2. The.Convectors are placed at a height in the enclosures corresponding to that obtained with "low legs." 3. The Convectors are completely filled with steam at a temperature of 215F. or water at a temperature of 175F. ,, ,,, Other Methods of Rating Present day methods of rating concealed heating units are not uniform, due to the addi tion to actual condensation ratings of an intangible called "Heating Effect on the theory that less Equivalent Direct Radiation is required with a concealed radiator than with an exposed radiator. , ,, The Code makes no provision for determining ratings on the basis of Heating Httect, "Available Heat" or "Effective Heat." Results of a State University Investigation of Heating Effect Recent tests conducted at a State University developed these two conclusions which disprove the "Heating Effect" theory: 1. The steam condensation obtained when the temperature is maintained at 68F. at the 30 inch level is an approximate measure of the relative effectiveness of different types of heating units in providing human comfort; lower condensation corresponding to greater effectiveness. 2. The heating effect is not materially greater than the total heat output as measured by steam con densation under given standard conditions, and the practice of adding a large proportion to condensation rating in order to provide for heating effect CANNOT BE JUSTIFIED. . For Your Protection When specifying convectors be sure of the basis of rating. Insist that Ratings .be according to the A.S.H.V.E. Standard Code. Be safe and choose Aero Convectors with catalog ratings that are guaranteed. Write or 'phone nearest Branch Office for copy of Aero Convector Catalog No. 2 and Supplement "A" 652 Boilers, Cast-Iron National Radiator Corporation General Offices, Johnstown, Pa. NATIONAL PREMIER STEEL BOILERS Constructed for 15 lbs. working pressure in accordance with the A. S. M. E. Code SMALL STEEL BOILERS--REAR SMOKE OUTLET--THREE PASS Type "DB" Type "MB" Type "OB" Solid Fuel--Hand Fired Solid Fuel--Stoker Fired OiJ or Gas Fired "MB/ "`OB'*.. 251 252 253 2*4 255 256 311 312 313 314 315 316 ..Sq. Ft. 485 .645 840 990 1120 1250 1350 1525 1700 1875 2050 2225 * "OB* . .Sq'. Ft. 735 890 1045 1200 1355 1510 1635 1850 2065 2280 2495 2710 . .Sq. Ft. 775 1030 1340 1580 1790 2000 2160 2440 2720 3000 3280 3560 ' ` OB* ..Sq. Ft. 1175 1425 1675 1925 2175 2425 2615 2960 3305 3650 3995 4340 12 12 12 12 12 12 16 16 16 16 16 16 Stack Height......... ............ ........Ft. 35 35 35 40 40 40 . 40 40 40 45 45 45 REAR SMOKE OUTLET--THREE PASS Type "DB" (Direct Draft); Type "SB" (Smokeless); Type "OB" (Oil, Gas or Stoker Fired) Boiler No. Types DB" "SB" and OB" S.H.B.I. Steam Ratings Type "DB," and *SB" S.H.B.I. Steam Ratings Br- Heat ing Sur- Face Grate Area Types "DB" and "SB" Furnace Volume Above Water Leg Ring Type "OB" Gross Base Volume Floor to Water Leg Ring Type "OB" Height of Water Line Sq. Ft. Sq- Ft. Sq.Ft. Sq. Ft. Cu. Ft. Cu. Ft. Ft. In. t> S Length Length 01* 'o Over _G Boiler all '0 y TJ 5? to In. Ft. In. Ft. In. In. Jd hc s c2 0 <75 Height Dia. 0 Rear Smoke Out let Height Over- ' all of Rear rn '5 Smoke CcQ Out 4 0 h. let .2 DO 0CQ Q.S Q-- O ts X- In. Ft. In. Ft. In. In. In. In. Ft. 371 2550 3100 183 11.6 28.3 372 3000 3675 216 11.6 31.6 373 3500 4250 250 11.6 36.1 431 4000 4900 287 12.5 45.2 432 450?K 5500 323 14.0 49.8 433 5050 6125 360 15.5 54.3. 491 6000 7300 428 16.3 58.7 492 6550 7950 467 18.0 63.4 493 7000 ' 8500 500 19.8 66.4 551 8500 10350 608 20.6 83.5 552 9575 11625 684 22.6 92.0 611 10840 13150 774 25.5 97.8 612 12000 14575 857 25.5 106.6 671 14330 17400 1024 28.3 131.6 672 16350 19850 1168 30.8 145.7 731 18650 22650 1332 33.9 172.0 732 20700 25175 1480 36.6 189.3 791 22650 27500 1618 36.9 218.1 792 25550 31000 1825 39.9 241.4 851 28750 34900 2054 40.1 233.3 852 33000 40050 2357 43.3 258.6 853 34150 41450 2438 46.5 266.0 16.5 19.1 22.0 25.5 28.2 30.9 29.0 31.4 33.5 48.4 53.7 52.5 57.3 68.9 77.1 85.9 94.2 103.3 115. i 107.7 121:1 124.8 5-81/2 5-81/2 5^11 5-11 5-11 6-9 6-9 6-9 7-1 7-1 7-11 7-11 8-0 8-0 s-w, -3'/2 8-5V? 8-51/2 9-71/2 9-7>4 9 T/l 37 5-4 6-4 37 6-1 7-1 37 7-0 8-0 43 7-0 8-0 43 7-9 8-9 43 8-6 9-6 49 7-0 8-2 49 7-7 8-9 49 8-1 9-3 55 8-4 9-6 55 9-3 10-5 61 8-2 9-5 61 8-11 10-2 67 9-9 11-1 67 10-11 12-3 73 11-2 12-10 73 12-3 13-11 79 12-5 14-1 79 13-10 15-6 85 12-0 13-8 85 13-6 15-2 85 13-11 15-7 . 64 64 64 64 64 64 85 85 85 85 85 86 86 86 86 86 86 10 6 10 6 10 .6 10 6 10 6 5-4 5-4 5-4 5-7 5-7 5-7 6-5 6-3 6-5 6-10 6-10 7-4 7-4 7-7 7-7 7-9 7-9 8-0 8-0 9-0 9-0 9-0 6-7 6-7 6-7 7-0 7-0 7-0 8-2 8-2 8-2 8-6 8-6 9-4 9-4 9-6 9-6 9-10 9-10 10-2 10-2 11-5 11-5 11-5 22 22 22 74 24 24 26 26 25 28 7.3 32 32 34 34 36 36 40 40 42 42 42 22 70 50 22 20 50 22 20 55 24 22 33 24 22 55 24 22 60 26 24 60 26 24 60 26 2b 65 23 26 65 73 28 65 32 30 70 37. 30 70 34 32 /O 34 32 70 36 34 80 36 34 90 40 38 90 40 38 90 42 40 100 42 40 100 42 40 100 FRONT SMOKE OUTLET--TWO PASS Type "DF" (Direct Draft); Type "SF" (Smokeless); Type "OF" (Oil, Gas or Stoker Fired) Boiler No. S.H.B.I. Steam Ratings S.H.B.I. Steam Bp? Ratings "SF" and "OF' and "SF' BF Heat ing SurFace Grate Area Bl? and "SF' Furnace Volume Above Water Leg Ring Type "OF* Gross Base Volume Floor to Water Leg Ring Bp Height Water Line '0 03 *o _G & | Length Length 5 ` of Over vS Boiler all *0 t> .8js coO Sq. Ft. Sq. Ft. Sq.Ft. Sq.Ft. Cu. Ft. Cu. Ft. Ft. In. In. Ft. In. Ft. In. In. Height Size h j or Height of 0 Smoke Over Smoke co 3 2 * Out all Out 0^ "0:3 let let .2 CO *CQ Q.S 15- Ft. In. Ft. In, In. In. In. 371 3000 372 3500 373 4000 431 4500 432 5000 433 6000 491 7000 492 8500 551 10000 552 12500 611 15000 671 17500 731 20000 791 25000 851 30000 852 35000 3650 4250 4900 5500 6100 7300 8500 10300 12150 15200 18200 21250 24300 30400 36450 42500 214 11.6 250 !1.6 286 12.9 322 14.0 358 15.5 429 16.9 500 18.1 607 21.3 715 22.6 893 26.6 1072 28.0 1250 30.9 1429 33.9 1786- _ 37.0 2143 43:3 2500 46.5 37.9 41.8 45.8 61.1 65.1 73.6 80.1 91.2 114.3 132.8 155.4 181.6 222.4 278.4 295.7 326.6 21.0 5-8 37 5-5 6-9 6 4 5-10 23.6 5-8 37 6-3 7-7 6 4 5-10 26.2 5-8 37 7-1 8-5 6 4 5-10 32.2 5-10>/2 43 7-6 8-11 6 4 6-0V2 34.6 5-101/2 43 8-2 9-7 . 6 4 6-0</2 39.7 5-ioy, 43 9-7 11-0 6 4 fr-OVi 36.6 6-9 49 7-4 9-0 8 5 6-11 42.5 6-9 49 8-9 10-5 8 5 6-11 61.4 7-1 55 9-0 10-9 8 5 7-3 73.0 7-1 55 11-0 12-9 8 5 7-3 77.0 7-11 61 10-3 12-2 8 6 8-1 91.4 8-1 67 11-2 13-1 8 6 8-3 101.5 8-4 73 11-5 IT-4 8 6 8-6 121.6 8-6 79 12-10 14-9 10 6 8-8 124.5 9-7 86 11-10 14-0 10 6 9-9 140.9 9-7 85 13-8 15-10 10 6u 9-9 Ratings comform with the Steel Heating Boiler Institute's Code for Rating Low Pressure Heating Boilers. S. H. B. I. Water Ratings are 60 per cent greater than S. H. B. I. Steam Ratings. 6-7 10x26 6-7 10x26 6-7 10x26 7-0 11x30 7-0 11x30 7-0 11x30 8-2 14x36 8-2 14x36 8-6 15x40 8-6 15x40 9-4 17x42 9-6 17x46 9-10 17x50 10-2 17x56 11-5 20x60 11-5 20x60 20 20 20 22 22 24 25 2b 28 30 32 34 36 40 42 42 18 50 18 55 18 55 20 60 20 60 22 60 24 65 24 65 26 70 28 75 30 80 32 85 34 90 38 90 40 100 40 100 653 |t IT.Size of Return I *n Height of Stack.lr | 1 Boiler ||