Energy Conservation Program for Consumer Products: Test Procedures for Residential Furnaces and Boilers

The U.S. Department of Energy (DOE) amends its test procedure for residential furnaces and boilers established under the Energy Policy and Conservation Act. This rulemaking will fulfill DOE's obligation to review its test procedures for covered products at least once every seven years. The revisions include: Clarifying the components included in the burner electrical power input term (PE); adopting a method for determining whether a minimum draft factor can be applied, and how the conditions are to be verified; allowing optional measurement of condensate collection during establishment of steady state; updating references to the applicable installation and operating manual and providing clarifications when the installation and operation (I&O) manual does not specify test setup; clarifying the testing of units intended to be installed without a return duct; adopting a provision clarifying the testing of multi-position units; revising the required reporting precision for annual fuel utilization efficiency (AFUE); and adopting a verification method for determining whether a boiler incorporates an automatic means for adjusting water temperature and whether this design requirement functions as required.