ASHRAE-90.1-2022- - Page 186

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combination of equipment other than for on-site renewable energy systems, planters, vegetated space, skylights, or occupied roof deck after meeting requirements of Section 10.5.1 Gfloor = gross floor area of building, ft [2]

PV incl = PV incl for building type from Table 11.5.1-2, W/ft [2]

Exceptions to 11.5.1:

1. Portions of buildings devoted to manufacturing or industrial use not including office areas.

2. Where the core/shell complies in accordance with Normative Appendix G or Section 12, the initial build-out alterations do not need to achieve any energy credits. Informative Notes:

3. Under Section 11.5.1(a), a building may be split into multiple building use types unless there is a small area less than 10% of the gross floor area of a different use type. Examples: A small managers office in a multifamily building, retail, or hotel would be included with the main multifamily or other use type, while a large administrative wing of a hospital (>10% of gross building area or greater than 2000 ft [2] ) would be a separate building use type. A coffee bar in the lobby of an office building or bookstore would be included with the office or retail use type, while a restaurant with a commercial kitchen in a hotel seeking hot water or kitchen equipment measures would be a separate building use type, regardless of relative size.

Where office areas 2000 ft [2] or more are associated with a larger building of a different type, such as a data center, warehouse, or hospital, the office area should be separated for energy credit treatment in the office building category, even if the special use was less than 10% of the total project building area. 2. The energy credit requirements in Table 11.5.1-1 are based on a cost-effectiveness analysis of a selection of credits that would typically be applied to each building use type. In all cases, photovoltaic renewable credits are included. The renewable credit adjustment in item (e) (based on Table 11.5.1-2) is included so that, where on-site renewable energy is not feasible, the required credits are appropriately reduced to match a typical cost-effective package of measures.

types, credits achieved for each building use type shall be weighted by the gross floor area of each building

a. The measure energy credit shall be the base energy credit for the measure, where no adjustment factor or

formula is shown in the measure description (e.g., EC H02_base ). b. The measure energy credit shall be the base energy credit for the measure, adjusted by a factor or formula

as stated in the measure description in this section. Where adjustments are applied, each measure energy credit shall be rounded to the nearest whole number (e.g., EC H02_adj ). c. The measure energy credit shall be by direct formula as stated in the measure description in this section,

where each measure credit shall be rounded to the nearest whole number (e.g., EC H02_calc ).

Informative Note: The number of energy credits achieved for each individual measure is determined in

one of three ways:

1. The base energy credit for the measure shown in Tables 11.5.3-1 through 11.5.3-9 for the building use type and climate zone where no adjustment factor or formula is shown in the measure description. This applies to the following measures:

   • H04: 11.5.2.2.4, “Residential Space HVAC Control”

   • H07: 11.5.2.2.7, “Improved HVAC Sequence of Operations”

   • W01: 11.5.2.3.1(a), “Heat Recovery for Service Hot-Water Preheating”

   • W05: 11.5.2.3.3(a), “Point-of-Use Water Heater”

   • W06: 11.5.2.3.3(b), “Thermostatic Balancing Valves”

   • W07: 11.5.2.3.4, “Dwelling-Unit Service Hot-Water Submeters”

   • W08: 11.5.2.3.5, “Right Sizing the Hot-Water Distribution System”

   • P01: 11.5.2.4, “Energy Monitoring”

184 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)