10 C.F.R. § 431.86

Current through May 31, 2024

Section 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers

(a)Scope. This section provides test procedures, pursuant to the Energy Policy and Conservation Act (EPCA), as amended, which must be followed for measuring the combustion efficiency and/or thermal efficiency of a gas- or oil-fired commercial packaged boiler.

(b)Testing and Calculations. Determine the thermal efficiency or combustion efficiency of commercial packaged boilers by conducting the appropriate test procedure(s) indicated in Table 1 of this section.

Table 1-Test Requirements for Commercial Packaged Boiler Equipment Classes

Equipment category	Subcategory	Certified rated input Btu/h	Standards efficiency metric (§ 431.87 )	Test procedure (corresponding to standards efficiency metric required by § 431.87 )
Hot Water	Gas-fired	[GREATER THAN EQUAL TO]300,000 and [LESS THAN EQUAL TO]2,500,000	Thermal Efficiency	Appendix A, Section 2.
Hot Water	Gas-fired	[GREATER THAN]2,500,000	Combustion Efficiency	Appendix A, Section 3.
Hot Water	Oil-fired	[GREATER THAN EQUAL TO]300,000 and [LESS THAN EQUAL TO]2,500,000	Thermal Efficiency	Appendix A, Section 2.
Hot Water	Oil-fired	[GREATER THAN]2,500,000	Combustion Efficiency	Appendix A, Section 3.
Steam	Gas-fired (all*)	[GREATER THAN EQUAL TO]300,000 and [LESS THAN EQUAL TO]2,500,000	Thermal Efficiency	Appendix A, Section 2.
Steam	Gas-fired (all*)	[GREATER THAN]2,500,000 and [LESS THAN EQUAL TO]5,000,000	Thermal Efficiency	Appendix A, Section 2.
		[GREATER THAN]5,000,000	Thermal Efficiency	Appendix A, Section 2. OR Appendix A, Section 3 with Section 2.4.3.2 .
Steam	Oil-fired	[GREATER THAN EQUAL TO]300,000 and [LESS THAN EQUAL TO]2,500,000	Thermal Efficiency	Appendix A, Section 2.
Steam	Oil-fired	[GREATER THAN]2,500,000 and [LESS THAN EQUAL TO]5,000,000	Thermal Efficiency	Appendix A, Section 2.
		[GREATER THAN]5,000,000	Thermal Efficiency	Appendix A, Section 2. OR Appendix A, Section 3. with Section 2.4.3.2 .

* Equipment classes for commercial packaged boilers as of July 22, 2009 (74 FR 36355) distinguish between gas-fired natural draft and all other gas-fired (except natural draft).

(c)Field Tests. The field test provisions of appendix A may be used only to test a unit of commercial packaged boiler with rated input greater than 5,000,000 Btu/h.

10 C.F.R. §431.86

81 FR 89305, Dec. 9, 2016

81 FR 79251, 12/12/2016; 81 FR 89305, 12/9/2016; 81 FR 89305, 1/9/2016