Energy Code Ace - Daylight Responsive Controls.

SECTION 130.1 – MANDATORY INDOOR LIGHTING CONTROLS

Nonresidential and hotel/motel buildings shall comply with the applicable requirements of Sections 130.1(a) through 130.1(f), in addition to the applicable requirements of Sections 110.9 and 130.0.

(a) Manual controls. Each space shall be provided with lighting controls that allow the lighting in that space to be manually turned on and off. The manual control shall:

1. Be readily accessible; and

Exception to Section 130.1(a)1: Restrooms having two or more stalls, parking areas, stairwells, corridors and spaces of the building intended for access or use by the public may use a manual control not accessible to unauthorized personnel.

2. Be located in the same space or be located such that the controlled lighting or the status of the controlled lighting can be seen when operating the controls; and

Exception to Section 130.1(a)2: In healthcare facilities, for restrooms and bathing rooms intended for a single occupant, the lighting control may be located outside the enclosed area but directly adjacent to the door.

3. Provide separate control of general, floor display, wall display, window display, case display, ornamental, and special effects lighting, such that each type of lighting can be turned on or off without turning on or off other types of lighting. Scene controllers may comply with this requirement provided that at least one scene turns on general lighting only, and the control provides a means to manually turn off all lighting.

Exception to Section 130.1(a): Up to 0.1 watts per square foot of indoor lighting may be continuously illuminated to allow for means of egress illumination consistent with California Building Code Section 1008. Egress lighting complying with this wattage limitation is not required to comply with manual control requirements if:

1. The space is designated for means of egress on the plans and specifications submitted to the enforcement agency under Section 10-103(a)2 of Part 1; and

2. The egress lighting controls shall not be controllable by unauthorized personnel during a normal power failure.

(b) Multilevel lighting controls. The general lighting of any space with a size of 100 square feet or larger and with a connected lighting load greater than 0.5 watts per square foot shall be provided with multilevel lighting controls. The multi-level lighting controls shall provide and enable continuous dimming from 100 percent to 10 percent or lower of lighting power.

Exception 1 to Section 130.1(b): An indoor space that has only one luminaire.

Exception 2 to Section 130.1(b): Restrooms.

Exception 3 to Section 130.1(b): Healthcare facilities.

Exception 4 to Section 130.1(b): The general lighting with light source of HID and induction shall have a minimum of one control step between 30 and 70 percent of full rated power.

(c) Shut-OFF Controls. All installed indoor lighting shall be equipped with controls able to automatically reduce lighting power when the space is typically unoccupied.

Exception 1 to Section 130.1(c): Healthcare facilities.

Exception 2 to Section 130.1(c): Continuous illumination of up to 0.1 watts per square foot in any area designated for egress within a building is allowed, provided that the area is designated for means of egress on the plans and specifications submitted to the enforcement agency under Section 10-103(a)2 of Part 1. The lighting provided for means of egress illumination, as defined in the California Building Code, must be configured to provide no less than the illumination required by Section 1008 of the California Building Code while in the partial-off mode.

1. All installed indoor lighting shall be equipped with controls that meet the following requirements:

A. Shall be controlled with an occupant sensing control set to no more than a 20-minute time delay, automatic time-switch control, or other control capable of automatically shutting OFF all of the lighting when the space is typically unoccupied; and

B. Separate controls for the lighting on each floor, other than lighting in stairwells; and

C. Separate control zones for a space enclosed by ceiling height partitions not exceeding 5,000 square feet.

Exception to Section 130.1(c)1C: The area controlled may not exceed 20,000 square feet in the following function areas: malls, auditoriums, single tenant retail, industrial, convention centers and arenas.

Exception 1 to Section 130.1(c)1: Where the lighting is serving an area that is in continuous use, 24 hours per day/365 days per year.

Exception 2 to Section 130.1(c)1: Lighting complying with Section 130.1(c)5 or 130.1(c)6E. Lighting in stairwells and common area corridors that provide access to guestrooms of hotel/motels and complying with Section 130.1(c)6C.

Exception 3 to Section 130.1(c)1: Electrical equipment rooms subject to Article 110.26(D) of the California Electrical Code.

Exception 4 to Section 130.1(c)1: Illumination provided by lighting equipment that is designated for emergency lighting, and is intended to function in emergency mode only when normal power is absent.

2. Countdown timer switches may be used to comply with the automatic shut-OFF control requirements in Section 130.1(c)1 only in closets less than 70 square feet, and server aisles in server rooms. The maximum timer setting shall be 10 minutes for closets, and 30 minutes for server aisles.

3. If an automatic time-switch control is installed to comply with Section 130.1(c)1, it shall incorporate a manual override lighting control that allows the lighting to remain ON for no more than 2 hours when an override is initiated.

Exception 1 to Section 130.1(c)3: In the following function areas, the override time may exceed 2 hours: Malls, auditoriums, single tenant retail, industrial, laboratories and arenas where captive-key override is utilized.

Exception 2 to Section 130.1(c)3: Areas where occupant sensing controls are installed.

4. If an automatic time-switch control is installed to comply with Section 130.1(c)1, it shall incorporate an automatic holiday "shut-OFF" feature that turns OFF all loads for at least 24 hours, and then resumes the normally scheduled operation.

Exception 1 to Section 130.1(c)4: Automatic holiday shut-OFF features are not required in retail stores, malls, restaurants, grocery stores, churches, and theaters.

Exception 2 to Section 130.1(c)4: Areas where occupant sensing controls are installed.

5. Occupant Sensing Controls. In offices 250 square feet or smaller, multipurpose rooms of less than 1,000 square feet, classrooms, conference rooms, and restrooms, lighting shall be controlled with occupant sensing controls to automatically shut OFF all of the lighting in 20 minutes or less after the control zone is unoccupied.

In areas required by Section 130.1(b) to have multi-level lighting controls, the occupant sensing controls shall function either as a:

A. Partial-ON occupant sensing controls capable of automatically activating between 50 and 70 percent of controlled lighting power, or

B. Vacancy sensing controls, where all lighting responds to a manual ON input only.

In areas not required by Section 130.1(b) to have multi-level lighting controls, the occupant sensing controls shall function either as a:

i. Automatic full-on occupant sensing controls; or

ii. Partial-ON occupant sensing controls, or

iii. Vacancy sensing controls, where all lighting responds to a manual ON input only.

In addition, controls shall be provided that allow the lights to be manually shut-OFF in accordance with Section 130.1(a) regardless of the sensor status.

6. Full or partial OFF occupant sensing controls. For warehouse aisle ways, warehouse open areas, library book stack aisles, corridors, stairwells, offices greater than 250 square feet, parking garages, parking areas, loading areas, and unloading areas, the installed lighting shall meet the following requirements:

A. In warehouse aisle ways and warehouse open areas, lighting shall be controlled with occupant sensing controls that automatically reduce lighting power by at least 50 percent when the areas are unoccupied. The occupant sensing controls shall independently control lighting in each warehouse aisle way, and shall not control lighting beyond the aisle way being controlled by the sensor.

Exception to Section 130.1(c)6A: When metal halide lighting or high pressure sodium lighting is installed in warehouses, occupant sensing controls shall reduce lighting power by at least 40 percent.

B. In library book stack aisles 10 feet or longer that are accessible from only one end, and library book stack aisles 20 feet or longer that are accessible from both ends, lighting shall be controlled with occupant sensing controls that automatically reduce lighting power by at least 50 percent when the areas are unoccupied. The occupant sensing controls shall independently control lighting in each aisle way, and shall not control lighting beyond the aisle way being controlled by the sensor.

C. In corridors and stairwells, lighting shall be controlled by occupant sensing controls that separately reduce the lighting power in each space by at least 50 percent when the space is unoccupied. The occupant sensing controls shall be capable of automatically turning the lighting fully ON only in the separately controlled space, and shall be automatically activated from all designed paths of egress. Lighting in stairwells and common area corridors that provide access to guestrooms of hotel/motels shall meet requirements of this section instead of complying with Section 130.1(c).

D. In office spaces greater than 250 square feet, general lighting shall be controlled with occupant sensing controls that meet all of the following:

i. The occupant sensing controls shall be configured so that lighting shall be controlled separately in control zones not greater than 600 square feet. All control zones in offices greater than 250 square feet shall be shown on the plans; and

ii. In 20 minutes or less after the control zone is unoccupied, the occupant sensing controls shall uniformly reduce lighting power in the control zone to no more than 20 percent of full power. Control functions that switch control zone lights completely off when the zone is vacant meet this requirement; and

iii. In 20 minutes or less after the entire office space is unoccupied, the occupant sensing controls shall automatically turn off lighting in all control zones in the space; and

iv. In each control zone, lighting shall be allowed to automatically turn on to any level up to full power upon occupancy within the control zone. When occupancy is detected in any control zone in the space, the lighting in other control zones that are unoccupied shall operate at no more than 20 percent of full power.

Exception to Section 130.1(c)6D: Under-shelf or furniture-mounted task lighting controlled by a local switch and either a time switch or an occupancy sensor.

E. In parking garages, parking areas and loading and unloading areas, general lighting shall be controlled by occupant sensing controls that meet the requirements below instead of complying with Section130.1(c)1:

i. The occupant sensing controls shall uniformly reduce lighting power in the control zone to between 20 percent and 50 percent full power and with at least one control step; and

ii. No more than 500 watts of rated lighting power shall be controlled together as a single zone: and

iii. The occupant sensing controls shall be capable of automatically turning the lighting fully ON only in the separately controlled zone, and shall be automatically activated from all designed paths of egress.

Interior areas of parking garages are under the classification of indoor lighting for compliance and shall comply with Section 130.1(c)6E. Parking areas on the roof of a parking structure are under the classification of outdoor hardscape and shall comply with Section 130.2.

7. Reserved.

8. Hotel/motel guest rooms shall be controlled with one of the following controls such that, no longer than 20 minutes after the guest room has been vacated, lighting power is switched off:

i. Captive card key controls; or

ii. Occupant sensing controls; or

iii. Other automatic controls.

Exception to Section 130.1(c)8: A high-efficacy luminaire that meets the requirements in Section 150.0-A(k)1A and that is switched separately with the switch is located within 6 feet of the entry door.

(d) Daylight Responsive Controls.

1. Daylight responsive controls shall be installed in the following locations as applicable:

A. In any enclosed space where the total installed wattage of general lighting luminaires completely or partially within skylit daylit zones is 75 watts or greater, the general lighting in the skylit daylit zones shall be controlled by daylight responsive controls.

B. In any enclosed space where the total installed wattage of general lighting luminaires completely or partially within primary sidelit daylit zones is 75 watts or greater, the general lighting in the primary sidelit daylit zones shall be controlled by daylight responsive controls.

C. In any enclosed space where the total wattage of general lighting luminaires in the secondary zones is 75 watts or greater, the general lighting in the secondary sidelit daylit zones shall be controlled by daylight responsive controls. General lighting in the secondary sidelit daylit zones shall be controlled independently of general lighting in the primary sidelit daylit zones.

D. For skylights located in an atrium, the skylit daylit zone definition shall apply to the floor area directly under the atrium and the top floor area directly adjacent to the atrium.

E. Parking garage areas where the total installed wattage of the general lighting in the primary and the secondary sidelit daylit zones is 60 watts or greater, the general lighting in the primary and secondary sidelit daylit zones shall be controlled by daylight responsive controls.

2. All daylight responsive controls shall meet the following requirements:

A. All skylit daylit zones, primary sidelit daylit zones, secondary sidelit daylit zones, and the combined primary and secondary sidelit daylit zones in parking garages shall be shown on the plans; and

Note: Parking areas on the roof of a parking structure are outdoor hardscape, not skylit daylit areas.

B. The daylight responsive controls shall provide separate control for general lighting in each type of daylit zone. The daylight responsive controls shall meet the following:

i. General lighting in overlapping skylit daylit zone and sidelit daylit zone shall be controlled as part of the skylit daylit zone.

ii. General lighting in overlapping primary and secondary sidelit daylit zones shall be controlled as part of the primary sidelit daylit zone.

iii. General lighting luminaires longer than 8 feet shall be controlled as segments of 8 feet or less according to the type of the daylit zone in which the segment is primarily located; and

Exception to Section 130.1(d)2Biii: Where a luminaire contains a factory assembled housing and light source as an integral unit in segments longer than 8 feet, the luminaire segment is allowed to be controlled according to the type of the daylit zone in which the segment is primarily located.

C. The daylight responsive controls shall meet the following:

i. For spaces where the installation of multilevel lighting controls is required under Section 130.1(b), allow the multilevel lighting controls to adjust the light level with continuous dimming;

ii. For each space, ensure the combined illuminance from the controlled lighting and daylight is not less than the illuminance from controlled lighting when no daylight is available;

iii. For areas other than parking garages, ensure that, when the daylight illuminance is greater than 150 percent of the illuminance provided by the controlled lighting when no daylight is available, the controlled lighting power in that daylight zone shall be reduced by a minimum of 90 percent; and

iv. For parking garages, ensure that when daylight illuminance levels measured at the farthest edge of the secondary sidelit zone away from the glazing or opening are greater than 150 percent of the illuminance provided by the controlled lighting when no daylight is available, the controlled lighting power in the combined primary and secondary sidelit daylit zones shall be reduced by 100 percent; and

D. Photosensors shall be located so that they are not readily accessible to unauthorized personnel; and

E. The location where calibration adjustments are made to the daylight responsive controls shall be readily accessible to authorized personnel but may be inside a locked case or under a cover which requires a tool for access; and

F. The automatic daylighting control shall permit the multilevel lighting control to adjust the level of lighting.

Exception 1 to Section 130.1(d): Areas under skylights where it is documented that existing adjacent structures or natural objects block direct sunlight for more than 1,500 daytime hours per year between 8 a.m. and 4 p.m.

Exception 2 to Section 130.1(d): Areas adjacent to vertical glazing below an overhang, where the overhang covers the entire width of the vertical glazing, no vertical glazing is above the overhang, and the ratio of the overhang projection to the overhang rise is greater than 1.5 for south, east and west orientations or greater than 1 for north orientations.

Exception 3 to Section 130.1(d): Where daylight responsive controls are not required for the primary sidelit daylit zones, and where the total wattage of general lighting luminaires in the secondary sidelit daylit zones is less than 85 watts, daylight responsive controls are not required for the secondary sidelit zone.

Exception 4 to Section 130.1(d): Reserved.

Exception 5 to Section 130.1(d): Rooms that have a total glazing area of less than 24 square feet, or parking garage areas with a combined total of less than 36 square feet of glazing or opening.

Exception 6 to Section 130.1(d): For parking garages, luminaires located in the daylight adaptation zone.

Exception 7 to Section 130.1(d): Luminaires in sidelit daylit zones in retail merchandise sales and wholesale showroom areas.

(e) Demand responsive controls. See Section 110.12 for requirements for demand responsive lighting controls.

(f) Occupancy sensing controls interactions with space-conditioning systems. For space-conditioning system zones serving only spaces that are required to have occupant sensing controls as specified in SectionS 130.1(c)5 and 6, and where Table 120.1-A allows the ventilation air to be reduced to zero when the space is in occupied-standby mode, the space-conditioning system shall be permitted to be controlled by occupancy sensing controls as specified in Section 120.2(e)3.

Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5, 25402.8, and 25943, Public Resources Code.

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