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Code of Federal Regulations Title 10. Energy § 10.431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers

Current as of January 02, 2025 | Updated by Findlaw Staff

(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

Standards efficiency

Test procedure (corresponding

metric

Btu/h

(§ 431.87)

to standards

efficiency

metric required)

by § 431.87)

Hot Water

Gas-fired

≥300,000 and ≤2,500,000

Thermal Efficiency

Appendix A, Section 2.

Hot Water

Gas-fired

>2,500,000

Combustion Efficiency

Appendix A, Section 3.

Hot Water

Oil-fired

≥300,000 and ≤2,500,000

Thermal Efficiency

Appendix A, Section 2.

Hot Water

Oil-fired

>2,500,000

Combustion Efficiency

Appendix A, Section 3.

Steam

Gas-fired (all *)

≥300,000 and ≤2,500,000

Thermal Efficiency

Appendix A, Section 2.

Steam

Gas-fired (all *)

>2,500,000 and ≤5,000,000

Thermal Efficiency

Appendix A, Section 2.

>5,000,000

Thermal Efficiency

Appendix A, Section 2.

OR

Appendix A, Section 3 with Section 2.4.3.2.

Steam

Oil-fired

≥300,000 and ≤2,500,000

Thermal Efficiency

Appendix A, Section 2.

Steam

Oil-fired

>2,500,000 and ≤5,000,000

Thermal Efficiency

Appendix A, Section 2.

>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.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 10. Energy § 10.431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-10-energy/cfr-sect-10-431-86/

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