Residential Single-Wall Home / Indirect Water Heaters / Residential Single-Wall Residential Single-Wall Indirect Water Heaters Heat Exchanger-Single-Wall 1½” O.D. glass coated (Ultonium®) carbon steel coil. The coil has a heat transfer area of 14.2 sq. ft. and a stored water volume of 2.7 Gal. Maximum supply temperature from the boiler must not exceed 250°F. Factory Installed Sparge Tube System-Cold water inlet sediment reducing device helps prevent sediment build up in tank. Increases first hour delivery of hot water while minimizing temperature build up in tank. Ultonium® Lining-Niles Steel Tank water heater tanks are protected from the corrosive effects of hot water by an exclusive ceramic porcelain-like coating. The Niles Steel Tank high silica Ultonium® lining provides a tough interior surface for our hot water tanks. Immersed Adjustable Honeywell Aquastat-Fast acting immersion aquastat for automatic temperature control (adjustable from 80°F to 160°F) Supply and Return Connections-1″ NPT female connections are located on the front for both the boiler collector supply and return. 2″ Non-CFC Foam Insulation-Covers the side and top of tank, reducing the amount of heat loss. This results in less energy consumption, improved operation efficiencies and jacket rigidity. Potable Water Connections-3/4″ NPT factory installed true dielectric fittings extend water heater life and eases installation. Three Protective Aluminum Anode Rods-Provide added protection against corrosion for long trouble-free service. Steel Tank-Heavy gauge steel automatically formed, rolled and welded to assure a continuous seam for glass lining. T&P Relief Valve-Included. Brass Drain Valve. Limited Lifetime Warranty on tank and heat exchanger. I=B=R Certified-These water heaters are rated by the Institute of Boiler and Radiation Manufacturers (I=B=R) to provide accurate performance data within the standards of the certification. The I=B=R rating is issued by the Hydronics Institute Division of GAMA and provide a recognized standard for proper comparison of hydronic appliances. Water Heater Dimensions (Inches) Model A B C D E F NSW-2-30-L 22 335⁄8 281⁄4 343⁄8 53⁄8 271⁄2 NSW-2-40-RL 22 411⁄8 343⁄8 417⁄8 53⁄8 271⁄2 NSW-2-50-RL 22 461⁄4 401⁄8 47 53⁄8 271⁄2 NSW-2-65-L 22 591⁄4 531⁄8 60 53⁄8 271⁄2 NSW-2-80-L 24 59 527⁄8 593⁄4 53⁄8 271⁄2 NSW-2-120-L 281⁄4 621⁄2 553⁄4 631⁄4 63⁄8 281⁄2 Notes: All Ratings based on 200 F boiler water temperature and 50 F potable water inlet temperature. DOE Water Heater Performance Model Maximum First Hour Rating (Gal/Hr) @ Continous Draw Rating (Gal/ Min) @ Approximate Boiler Output Needed for Ratings (BTU/Hr) 140°F 115°F 140°F 115°F NSW-2-30-L 226 342 3.3 5.2 180,000 NSW-2-40-RL 235 351 3.3 5.2 180,000 NSW-2-50-RL 244 360 3.3 5.2 180,000 NSW-2-65-L 258 374 3.3 5.2 180,000 NSW-2-80-L 272 388 3.3 5.2 180,000 NSW-2-120-L 309 425 3.3 5.2 180,000 AHRI Water Heater Performance Model First Hour Delivery @ 135 F (Gal) Continuous Draw Rating @135 F (Gal/Hr.) Standby Heat Loss Rating (F/Hr.) Minimum Output Rate of Heat Source (BTU/Hr.) Minimum Heat Source Flow Rate (Gal/min.) NSW-2-30-L 197 180 1.2 120,000 13.7 NSW-2-40-RL 205 180 1.1 120,000 13.7 NSW-2-50-RL 210 180 0.9 120,000 13.7 NSW-2-65-L 215 175 0.7 115,000 13.7 NSW-2-80-L 235 175 0.6 115,000 13.7 NSW-2-120-L 265 175 0.4 115,000 13.7 Water Heater Capacities Model Tank Capacity (Gal) Coil Volume (Gal) Dry Weight (Lbs) Wet Weight (Lbs) NSW-2-30-L 30 2.6 140 404 NSW-2-40-RL 40 2.6 168 514 NSW-2-50-RL 50 2.6 196 623 NSW-2-65-L 60 2.6 196 704 NSW-2-80-L 75 2.6 224 861 NSW-2-120-L 116 2.6 355 1324 Model_Number Capacity A. Height Floor to Heater Top B.Jacket Diameter C. Height Floor to T&P Conn. D. Height Floor to Water Conn. E. Height Floor to Exchanger Outlet F. Height Floor to Exchanger Inlet G. Height Floor to Aquastat Approx. Shipping Weight U.S.Gal. in. in. in. in. in. in. in. lbs. NSW-2-30-L 30 33 5/8 22 28 3/4 34 3/8 53/8 27 1/2 11 1/2 140 NSW-2-40-L 40 36 24 29 3/4 36 3/4 5 3/8 27 1/2 11 1/2 168 NSW-2-50-L 50 36 26 29 3/4 36 3/4 5 3/8 27 1/2 11 1/2 196 NSW-2-65-L 60 59 1/4 22 53 1/8 60 5 3/8 27 1/2 11 1/2 196 NSW-2-80-L 75 59 24 52 7/8 59 3/4 5 3/8 27 1/2 11 1/2 224 NSW-2-120-L 116 62 1/2 28 1/4 55 3/4 63 1/4 6 3/8 28 1/4 11 1/2 355 Download PDF Get a Quote Commercial Single-Wall Residential Double-Wall Residential Single-Wall Stainless Steel Single-Wall Products Chilled Water Buffer Tanks Electric Power Heater Series General Process Tanks Hot Water Generators Hydraulic Separators Indirect Water Heaters Insulation and Topcoat Linings Pipes and Fittings Solar Tanks Water Storage Tanks About NST Who We Are Facilities Capabilities Engineering Testing Get a Quote Careers Contact NST National, State, and Local Policies, Disclaimers, and Disclosures Get a Quote At Niles Steel Tank, we have experienced engineers who will calculate your request and promptly return the quotation. Get a Quote Niles Steel Tank is an American company with its manufacturing facilities located in the United States of America. Products made by Niles are manufactured in the United States using the finest raw materials and components from around the world to deliver the highest quality and value to our customers. Contact NST Niles Steel Tank Company PO Box 728 1701-A Terminal Road Niles, MI 49120 Email: info@nilesst.com Phone: 269.683.1910 Fax: 269.683.1953 Bradford White Corporation 725 Talamore Drive Ambler, PA 19002 www.bradfordwhitecorporation.com Subsidiary of ©Bradford White Corporation, ©2014 Niles Steel Tank. All Rights Reserved.