![]() ![]() Additional provisions that have been included address commercial refrigeration equipment, improved controls on heat rejection and boiler equipment, requirements for expanded use of energy recovery, small motor efficiencies, and fan power control and credits. Also, fan efficiency requirements were introduced for the first time. Equipment efficiencies were revised upward for heat pumps, packaged terminal air conditioners ( PTAC), single-package vertical heat pumps and air conditioners (SPVHP and SPVAC), and evaporative condensers. These changes include improvements to day- lighting and daylighting controls, space-by- space lighting power density limits, thresholds for toplighting, and revised controls requirements and format. simplification of the skylighting criteria.minimum VT/ SHGC ratio to enable good daylighting with minimum solar gain, while not restricting triple and quadruple glazing and.criteria requiring double-glazed fenestration in many climates.Opaque and fenestration assemblies in Tables 5.5-1 through 5.5-8 are revised in most climates. Opaque elements and fenestration requirements have been revised to increase stringency while maintaining a reasonable level of cost-effectiveness. The most significant changes included are as follows: ![]()
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