ASHRAE 90.1-2007

Section: 9.4.1.2 - Space Control

Toolbox

Each space enclosed by ceiling-height partitions shall have at least one control device to independently control the general lighting within the space. Each manual device shall be readily accessible and located so the occupants can see the controlled lighting.

(a) A control device shall be installed that automatically turns lighting off within 30 minutes of all occupants leaving a space, except spaces with multi-scene control, in

1. classrooms (not including shop classrooms, laboratory classrooms, and preschool through 12th grade classrooms),
2. conference/meeting rooms,
3. employee lunch and break rooms.

These spaces are not required to be connected to other automatic lighting shutoff controls.

(b) For all other spaces, each control device shall be activated either manually by an occupant or automatically by sensing an occupant. Each control device shall control a maximum of 2500 ft² area for a space 10,000 ft² or less and a maximum of 10,000 ft² area for a space greater than 10,000 ft² and be capable of overriding any time-of-day scheduled shutoff control for no more than four hours.
 

Exceptions:

Remote location shall be permitted for reasons of safety or security when the remote control device has an indicator pilot light as part of or next to the control device and the light is clearly labeled to identify the controlled lighting.