h 82,040 Watts W and storage capacities up to 100 gallons gal 379 liters L and constructed to Underwriters Laboratories, Inc UL or American Society of Mechanical Engineers ASME requirements.

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A-A-50549

Size 50 - 50-gallon (189 L) nominal storage capacity, with 1.20 gph (4.54 L/h)

minimum firing rate.

Size 70 - 70-gallon (265 L) nominal storage capacity, with 1.35 gph (5.11 L/h)

minimum firing rate.

Size 85 - 85-gallon (322 L) nominal storage capacity, with 1.45 gph (5.49 L/h)

minimum firing rate.

Size 100 - 100-gallon (379 L) nominal storage capacity, with 1.45 gph

(5.49 L/h) minimum firing rate.

3. SALIENT CHARACTERISTICS.

3.1 Description. The water heaters shall consist of an insulated vertical, steel, water storage

tank, a light oil-fired combustion system not exceeding 280,000 Btu/h (82,040 W) input capacity, and the operating and safety controls specified herein for completely automatic operation of the heaters for use in application requiring potable water.

3.2 Standard commercial product. The heaters shall, as a minimum, be in accordance with the requirements of this commercial item description and shall be the manufacturer's standard commercial product. Additional or better features which are not specifically prohibited by this commercial item description but which are a part of the manufacturer's standard commercial product, shall be included in the heaters being furnished. A standard commercial product is a product which has been sold or is being currently offered for sale on the commercial market through advertisements or manufacturer's catalogs, or brochures, and represents the latest product model.

3.3 Codes and standards compliance. The water heaters shall comply with the requirements of UL732 or ASME Boiler and Pressure Vessel Code, Section IV. The burner shall comply with UL296 (see 5.2).

3.4 Design. Steel for fabrication of the storage tank shall be commercial quality sheet or plate, chemically constituted, and suitably processed to adapt the steel for application of glass (porcelain enamel) linings. Steel for tanks with glass (porcelain enamel) lining shall be suitable for exposure to fire and products of combustion to which the tank will be exposed. Material in contact with potable water shall be nontoxic, and shall not impart odor, color, or taste to the contained water. The water heater package shall include: flue(s) that terminates in a flue collar that permits attachment of a sheet metal smoke pipe; insulation which is held in place with a steel jacket; and a combustion chamber. The water heater shall be suitable for installation in an alcove or a closet as specified (see 7.2). The water heater shall be suitable for installation on non-combustible floors or combustible floors as specified (see 7.2). When the water heaters are required for installation on combustible floors, installation instructions shall be provided on the unit for such application. Water heaters shall meet the capacity and performance requirements as follows: