Buildings shall comply with at least one of the following:
- More efficient HVAC performance in accordance with Section C406.2.
- Reduced lighting power density system in accordance with Section C406.3.
- Enhanced lighting controls in accordance with Section C406.4.
- On-site supply of renewable energy in accordance with Section C406.5.
- Provision of a dedicated outdoor air system for certain HVAC equipment in accordance with Section C406.6.
- High-efficiency service water heating in accordance with Section C406.7.
Interior lighting in the building shall have the following enhanced lighting controls that shall be located, scheduled and operated in accordance with Section C405.2.2.
- Luminaires shall be capable of continuous dimming.
- Luminaires shall be capable of being addressed individually. Where individual addressability is not available for the luminaire class type, a controlled group of not more than four luminaries shall be allowed.
- Not more than eight luminaires shall be controlled together in a daylight zone.
- 4.1. Control reconfiguration based on digital addressability.
- 4.2. Load shedding.
- 4.3. Individual user control of overhead general illumination in open offices.
- 4.4. Occupancy sensors shall be capable of being reconfigured through the digital control system.
- Construction documents shall include submittal of a Sequence of Operations, including a specification outlining each of the functions in Item 4 of this section.
- Functional testing of lighting controls shall comply with Section C408.
Total minimum ratings of on-site renewable energy systems shall comply with one of the following:
- Provide not less than 0.50 watts per square foot (5.4 W/m2) of conditioned floor area.
- Provide not less than 3 percent of the energy used within the building for building mechanical and service water heating equipment and lighting regulated in Chapter 4.
Buildings shall be of the following types to use this compliance method:
- Group R-1: Boarding houses, hotels or motels.
- Group I-2: Hospitals, psychiatric hospitals and nursing homes.
- Group A-2: Restaurants and banquet halls or buildings containing food preparation areas.
- Group F: Laundries.
- Group R-2: Buildings with residential occupancies.
- Group A-3: Health clubs and spas.
- Buildings showing a service hot water load of 10 percent or more of total building energy loads, as shown with an energy analysis as described in Section C407.
The building service water-heating system shall have one or more of the following that are sized to provide not less than 60 percent of hot water requirements, or sized to provide 100 percent of hot water requirements if the building shall otherwise comply with Section C403.4.7:
- Waste heat recovery from service hot water, heat-recovery chillers, building equipment, process equipment, or a combined heat and power system.
- Solar water-heating systems.