Document yyRDner5nd74k125eMn5vDy3

Heating Systems The National Radiator Company MODERN DESIGN A HEATING EQUIPMENT Johnstown Pennsylvania Branch Offices: Baltimore, 2100 St. Paul Street; Boston, 620 Newberry Street; Buffalo, 17 Wells Street; Chicago, 400 West Madison Street; Cleveland, 2422 Prospect Avenue; Detroit, 5736 Twelfth Street; New York, 60 East 42nd Street; Philadelphia, 1218 Cherry Street; Pittsburgh, 125 First Avenue; Richmond, 308 West Cary Street; San Francisco, 681 Market Street; Washington, D. C., 4043 Georgia Avenue, N. W. I-B-R Symbol--National Cast Iron Boilers are conservatively and accurately rated by laboratory tests in accordance with the Testing and Rating Code of the Institute of Boiler and Radiator Manu- fadurers. SB1 Symbol--National Steel Boilers are rated in conformance with the Steel Boiler Institute Rating Code and will develop their catalogued ratings in accordance with the performance requirements of their code. A.G.A. Symbol--National gas heating products bear the A.G.A. Seal of Approval or are listed by the American Gas Association. ASME Symbol--All National boilers are designed, constructed and stamped in accordance with the requirements of the Boiler Construction Code of the American Society of Mechanical Engineers. NATIONAL HEAT EXTRACTOR CAST IRON BOILERS Designed to fit the requirements of automatic heating, National Heat Ex tractors are provided with many features to insure high operating efficiency and maximum fuel, economy. These include extended heating surface, multiple-flue section construction, effectively insu lated jacket and doors, and heat conserver baffles. Convertible from hand to automatic firing after installation and readily adaptable to any desired fuel or method of firing. Wide range of both storage and tankless domestic water heaters available. HEAT EXTRACTOR BOILERS Boiler Series 100 200 300 400 Net I=B=R Ratings. Sq Ft Steam Water 170 to 470 350 to 880 700 to 2300 2500 to 6000 270 to 855 560 to 1560 1120 to 3835 4000 to 9600 Oil Heating Unit NATIONAL OIL HEATING UNITS, cast iron or steel, provide complete "one package" equipment designed for maxi- "soo" Series mum efficiency and top performance with this fuel. Complete automatic controls, prefabricated' combustion chamber of proper proportions, quiet burner for rear firing and attractive all-enclosing jacket. OIL HEATING UNITS Type of Unit 100 Series Cast 200 Series Cast Residential Steel. Net Ratings, Sq Ft A.G.A. Approved Steam Water 230 to 470 400 to 880 275 to 700 430 to 855 730 to 1560 440 to 1120 1452 The National Radiator Co. Heating Systems Boilers, Radiators, Convectors, Baseboard, Unit Heaters Residential Steel Boiler NATIONAL STEEL BOILERS meet all the requirements of the SB I Testing and Rating Code and the ASME Boiler Construction Code. All are inspected and approved by a representative of a boiler insurance company. The 18 in. and 23 in. Series Residential Steel Boilers (for gas and oil) are designed for smaller homes. The 26 in., 29 in. and 39 in. Series RESIDENTIAL STEEL BOILERS for Hand and'Automatic Firing are designed for larger in stallations. The Commercial Series are adaptable to automatic or hand firing and are used for the largest installations. Commercial Steel Boiler RESIDENTIAL STEEL BOILERS COMMERCIAL STEEL BOILERS Boiler Series 18*' and 23' 26', 29* and 39' SB1 Net Ratings, Sq Ft Steam Water 275 to 700 570 to 3000 440 to 1120 910 to 4800 Boiler Type Automatically Fired..................... Hand Fired............ SB1 Net Ratings, Sq Ft Steam Water 3000 to 35000 2500 to 29170 4800 to 56000 4000 to 46670 NATIONAL GAS BOILERS are modern, compact and designed exclusively for gas firing. Cast iron sections for long life and dependability. Tapered flues, long zigzag fire travel and heavy insulation insure efficiency and economy. St, S3, 14 Series GAS BOILERS Boiler Series 22 33 44 66 Net Ratings, Sq Ft A.G.A. Approved Steam Water 110 to 390 355 to 980 445 to 1920 1770 to 12950 205 to 715 650 to 1725 810 to 3245 3010 to 20720 NATIONAL HEAT DISTRIBUTORS Art Convector national art convector--a non-ferrous convector, for flush and semior full-recessed installation. Aluminum fins bonded to copper tubing comprise the heating element. Enclosures are made in a variety of types for residential or commercial installation. national aero convector-- Heating element is made of cast iron with fins cast integral with tubes. Adaptable to any type of heating sys tem. Several types are available for residential or commercial installation. NATIONAL ART RADIATORS--Com pact, cast iron construction . . . blend inconspicuously with most decorative schemes. 1453