ASHRAE 90.1-2001

Section: 9.2.1.2 - 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 control device shall be activated either manually by an occupant or automatically by sensing an occupant. Each control device shall

1. 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,
2. be capable of overriding the shutoff control required in 9.2.1.1 for no more than four hours, and
3. be readily accessible and located so the occupant can see the controlled lighting.
    

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.