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

3.8.1 Thermostat. The thermostat shall maintain control within 10 degrees of the thermostat setting, shall encompass a range from 100 F (38 C) to at least 160 F (71 C), and not allow the water to attain a temperature of more than 200 F (93 C).

3.8.2 Limit control cutout. The shutoff system shall be the manual reset type and shall interrupt the fuel supply to the heater before the water temperature exceeds 210 F (99 C).

3.9 Combination pressure-temperature relief valve. A combination pressure-temperature relief valve conforming to ANSI Z21.22 shall be installed on or supplied with the water heater. The pressure setting of the valve shall not exceed the working pressure of the water storage tank.

3.10 Accessories. When specified (see 7.2), one or more of the following accessories shall be furnished with each heater:

a. b.

Downdraft cap

Storm collar

1 each

e. f. g. h.

Elbow 90 , adjustable for smoke pipe

Smoke pipe, chimney or vent connector for heater

Draft regulator, barometric for smoke pipe

Insulating couplings for inlet and outlet water connections

Electrodes, ignition for fuel oil burner

Electrode lead, ignition for fuel oil burner

2 each

Sections as specified

(see 7.2)

1 each

1 set

2 each

4. REGULATORY REQUIREMENTS.

4.1 Materials. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Unless otherwise specified herein, all equipment, material, and articles incorporated in the work covered by this commercial item description are to be new and fabricated using materials produced from recovered materials to the maximum extent possible without jeopardizing the intended use. The term "recovered materials" means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin, raw materials. Unless otherwise specified, none of the above shall be interpreted to mean that the use of used or rebuilt products are allowed under this commercial item description.

4.2 Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest version of Federal Standard 376, and all other requirements of this commercial item description including form, fit, and function are met.

If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product.