§ 431.87. Energy conservation standards and their effective dates.
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/us/cfr/t10/s§ 431.87·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)Each commercial packaged boiler listed in table 1 of this paragraph
(a)and manufactured on or after the effective date listed must meet the indicated energy conservation standard. Table 1 to Paragraph (a)—Commercial Packaged Boiler Energy Conservation Standards Equipment category Subcategory Certified rated input Efficiency level—effective date: March 2, 2012 * Hot Water Commercial Packaged BoilersGas-fired≥300,000 Btu/h and ≤2,500,000 Btu/h80.0% ET. Hot Water Commercial Packaged BoilersGas-fired>2,500,000 Btu/h82.0% EC. Hot Water Commercial Packaged BoilersOil-fired≥300,000 Btu/h and ≤2,500,000 Btu/h82.0% ET. Hot Water Commercial Packaged BoilersOil-fired>2,500,000 Btu/h84.0% EC. Steam Commercial Packaged BoilersGas-fired, all, except natural draft≥300,000 Btu/h and ≤2,500,000 Btu/h79.0% ET. Steam Commercial Packaged BoilersGas-fired, all, except natural draft>2,500,000 Btu/h79.0% ET. Steam Commercial Packaged BoilersGas-fired—natural draft≥300,000 Btu/h and ≤2,500,000 Btu/h77.0% ET. Steam Commercial Packaged BoilersGas-fired—natural draft>2,500,000 Btu/h77.0% ET. Steam Commercial Packaged BoilersOil-fired≥300,000 Btu/h and ≤2,500,000 Btu/h81.0% ET. Steam Commercial Packaged BoilersOil-fired>2,500,000 Btu/h81.0% ET. * Where EC is combustion efficiency and ET is thermal efficiency.
(b)Each commercial packaged boiler listed in table 2 of this paragraph
(b)and manufactured on or after the effective date listed in Table 2 must meet the indicated energy conservation standard. Table 2 to Paragraph (b)—Commercial Packaged Boiler Energy Conservation Standards Equipment category Subcategory Certified rated input Efficiency level—effective date: March 2, 2022 * Steam Commercial Packaged BoilersGas-fired—natural draft≥300,000 Btu/h and ≤2,500,000 Btu/h79.0% ET. Steam Commercial Packaged BoilersGas-fired—natural draft>2,500,000 Btu/h79.0% ET. * Where ET is thermal efficiency. [88 FR 64352, Sept. 19, 2023]
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§ 431.87
Energy conservation standards and their effective dates.
Fed. Reg.×46
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