DOE’s test procedures rule for commercial packaged boilers (81 FR 79224) is final following its publication in the Federal Register by the Department of Energy. The effective date of the rule is December 12.

In this final rule, DOE amends subpart E of 10 CFR part 431 as follows:

  • Clarifies definitions regarding commercial packaged boilers and the coverage for field-constructed commercial packaged boilers.
  • Incorporates by reference certain provisions of the current revision to the applicable industry standard, ANSI/AHRI Standard 1500-2015, “2015 Standard for Performance Rating of Commercial Space Heating Boilers.”
  • Provides an optional field test and an optional conversion calculation from combustion to thermal efficiency for commercial packaged boilers with rated input greater than 5 million BTU/hr.
  • Modifies the inlet water temperature requirements for commercial packaged boilers.
  • Reduces the allowable range for ambient room temperature during testing.
  • Provides additional specificity in setup and instrumentation.
  • Requires digital data acquisition for certain parameters.

The final rule also amends 10 CFR part 429 to clarify certification and enforcement procedures, specifically to provide for the verification of rated input and to accommodate certification based on the optional field test.

On March 17, 2016, the DOE issued a notice of proposed rulemaking (NOPR) to amend the test procedure for commercial packaged boilers. That proposed rulemaking serves as the basis for the final rule. DOE incorporates by reference certain sections of the American National Standards Institute (ANSI)/Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 1500, “2015 Standard for Performance Rating of Commercial Space Heating Boilers.”

The final rule changes will be mandatory for representations related to energy efficiency or energy use starting November 6, 2017.