Best Practice Guide for Office Buildings

OFFICE Stairwell BUILDINGS OF-S1.0 Stairwell: occupancy sensing Control Needs Automatically turn lights on and off based on occupancy Emergency lighting controlled with general lighting; automatic ON during power outage Emergency lighting operates during power outage Solution Wall-mounted ultrasonic occupancy sensor (WT series) Emergency Lighting Control Unit (ELCU) to switch loads based on occupancy when normal power is available Power emergency lighting from emergency panel Application Description Space use: Dimensions: Ceiling height: Windows: Window blinds: Emergency egress, general circulation 7’ x 22’ 12’ None None Lighting Wall-mounted indirect/direct luminaires using two F32T8 lamps and 277-volt electronic ballasts. Stairwell Lighting Plan E J 30" Max PP J 6 E To other WT-600 occupancy sensor Raceway containing low voltage wiring powering other sensors Power pack mounted in oversized switch box WT-600 with transducers oriented downward. Mount above door swing area. Door Swing Area 6 WT-600 ultrasonic occupancy sensor (wall mounted) BZ-100 Junction box (wall mounted) E Wall mounted indirect/direct luminaire ELCU Low voltage wiring Line voltage wiring PP J Design Solution Description The WT ultrasonic occupancy sensor is used to automatically turn lights on and off based on occupancy. The sensor is commonly located on the wall, instead of beneath the stair landing, because there is typically less vibration at the wall. Because the luminaire is mounted on the wall above the door, the sensor is mounted on the stairwell wall perpendicular to the door location, above the door swing area. The occupancy sensor detects the motion of the stairwell door opening, and turns the lighting on. Because all wiring is surface-mounted, the sensor is mounted to an outlet box using screw mounts, rather than the threaded nipple, and the power pack is mounted in an oversized switch box. Egress and emergency lighting are controlled along with general lighting using the ELCU together with the occupancy sensor. In the event of loss of normal power, the ELCU forces emergency and egress lighting on. Code Compliance Guide (Bold = Compliant) ASHRAE 1999 2001 IECC Title 24 2004 2003 2004S 2006 2005 66 Watt Stopper/Legrand OF-S1.0 0908

Table of Contents Feed for the Digital Edition of Best Practice Guide for Office Buildings

Best Practice Guide for Office Buildings Contents Lighting Control Best Practice Guide for Office Buildings Value of Lighting Control for Office Buildings Office Building Space Usage Influential Factors for Lighting Control Office Building Lighting Control Design Guidelines Office Building Best Practice Guide Roadmap Summary of Best Practices for Lighting Control in Office Buildings Buildings Conference Rooms Cubicles Hallways Kitchens Open Offices Private Offices Restrooms Stairwells Storage Closets Exterior Lighting Summary of Energy Codes

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