WW-F-2743A
1.2.2 Groups. For the purpose of defining requirements, the furnaces and space heaters covered by this specification are classified under the following groups based on the thermal input in British thermal units per hour (Btu/hr (watt (W)) (see 3.8.1 and 6.2).
Group 1 - 22,000 to 225,000 Btu/hr (6 448 W) to 65 940 W) input. Group 2 - 225,001 to 400,000 Btu/hr (65 941 W to 117 228 W) input. Group 3 - Over 400,000 Btu/hr (117 228 W) input.
1.2.3 Burner kinds. Burners furnished on the furnaces and unit heaters will be of the following kinds, as specified (see 6.2). (Burner kinds HO, GLO, and GHO will apply to group 3 units only.)
Burner kind LO - Light-oil-fired (grade 2).
Burner kind G - Gas-fired (natural, manufactured, mixed, or liquefied petroleum gas), as specified (see 6.2).
Burner kind HO - Heavy-oil-fired (grade 4).
Burner kind GLO - Combination gas- and light-oil-fired.
Burner kind GHO - Combination gas- and heavy-oil-fired (grade 4).
2. APPLICABLE DOCUMENTS
2.1 Other Government documents and publications. The following other Government documents and publications form a part of this specification to the extent specified herein.
DEPARTMENT OF ENERGY (DoE)
Title 10 CFR, Part 430 Test Procedures.
(Application for copies should be addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.)
DEPARTMENT OF LABOR (DoL)
OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) OSHA 1910.219 Occupational Safety and Health Standards.
(Application for copies should be addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.)
FEDERAL TRADE COMMISSION (FTC)
Title 16 CFR, Part 305 - Rules For Using Energy Cost and Consumption Information used in Labeling and Advertising for Consumer Appliances Under the Energy Policy and Conservation Act.
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