DOCUMENT RESUME ED 475 977 EF 006 264 Lighting Control Best Practice Guide: Schools. TITLE 2002-00-00 PUB DATE 61p.; Produced by Watt Stopper, Inc. NOTE For full text: http://www.wattstopper.com/pdf/ AVAILABLE FROM SchoolK12guide.pdf. Non-Classroom (055) Guides PUB TYPE EDRS Price MF01/PC03 Plus Postage. EDRS PRICE DESCRIPTORS *Educational Facilities; *Electronic Control; Elementary Secondary Education; *Lighting; Lighting Design ABSTRACT This publication offers design, specification, and installation-guidance for lighting control appropriate for K-12 educational facilities. It features applications that illustrate the best control practices for a variety of spaces, facilitating lighting control design and application. Each best practice meets the provisions of relevant energy codes, reduces lighting operation costs, saves energy, and considers the needs of the primary space occupants, teachers and students. Each best practice includes a description of application, a list of control needs, a product solution, design considerations, a lighting plan sketch, installation notes, wiring and installation diagrams, and an equipment schedule. (EV) Reproductions supplied by EDRS are the best that can be made from the original document. PERMISSION TO REPRODUCE AND DISSEMINATE THIS MATERIAL HAS BEEN GRANTED BY Lighting Control Best Practice Guide Dorene Maniccia SCHOOLS TO THE EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC) 1 LIGHTING CONTROL 81 C A ks, Space by space best practices for schools: Control needs/solution Design considerations Floorplan control layout fr, Wiring diagram and installation guidelines 17:44 law as es Equipment schedules --E-" "err,r;--rwrinFt-IPINIPL"*'"""1"'- unit COPY AVAILABLE U.S. DEPARTMENT OF EDUCATION Woe of Educational Research and Improvement 3 ED CATIONAL RESOURCES INFORMATION CD CENTER (ERIC) c1 This document has been reproduced as received from the person or organization ctheWatt originating it. D Minor changes have been made to c) improve reproduction quality. Stopper Points of view or opinions stated in this document do not necessarily represent LU official OERI position or policy. 2 LIGHTING The Watt Stopper has assembled the Lighting Control ABCs program to assist with the design and implementation of lighting controls for educational facilities. With this program, you can take advantage of The Watt Stopper's technical expertise, comprehensive product offering, and wide range of best practice guidance, specifically for schools. Contents Introduction to the Lighting Control Best 000-0.00000,= Practice Guide for Schools 2 Value of lighting control for schools 000-0000000-0000000-00000-00 ,00 K-12 school space usage 0,-----0000-0-000000000-0000-000-0--0 3 - 4 School design guidelines -0-0-- 00-0000000-00000000-00000000 Influential factors for lighting control 00.000000000000000000000-00000000-0 5 .Summary of best practices for lighting control in schools 0-000000000000 6-7 Best Practices 9-28 Classrooms....°°°°0000 0000000000000000000000000000000000000000000 29-40 Gymnasiums 00000-00000000000.00000,0,-=,-- 41-44 Hallways-0-000-0000000000000""0-0-". 45-46 Multipurpose Rooms---00-0-000000,0- 47-52 ,o, Restrooms0 000000000000000000000000000000000 0 53-54 Exterior00-00-0000-0000-00000-0000000-0000000-0000 56-57 ASHRAE 90.1-2001 Energy Code 0-00-000-00-0000000,000-0-00-000 Lighting Control Best Practice Guide for Schools With nearly 20 years of experience developing and producing lighting controls, The Watt Stopper has helped thousands of organizations identify and implement energy saving lighting control systems. For each facility, there is an optimal lighting control solution, one which meets each owner's need, the occupants' needs, and which can be most effectively operated and maintained. Toward achieving this goal, The Watt Stopper offers comprehensive lighting control products encompassing several product lines: occupancy sensors, lighting control panels, daylighting controls, remote lighting controls, HID controls, and products to promote integrated control among multiple building control systems. With these product resources and unsurpassed technical expertise, The Watt Stopper helps ensure that the right combination of products are used to satisfy the range of control needs for today's schools and their occupants. This Best Practice publication focuses on design, specification, and installation guidance for lighting control appropriate for K-12 educational facilities. It features applications that illustrate the best control practices for a variety of spaces, facilitating lighting control design and application. With this resource, lighting control design professionals will save time and effort spent on projects. Each best practice meets the provisions of relevant energy codes, reduces lighting operation costs, saves energy, and considers the needs of the primary space occupants teachers and students. Each Best Practice includes: Description of application List of control needs Product solution Design considerations A lighting plan sketch Installation notes Wiring and installation diagrams Equipment schedule ctheWatt Stopper ze; 4 Value of Lighting Control for Schools Schools spend a significant portion of their annual operating budgets on electricity. According to data compiled by the Energy Information Administration (EIA), electricity expenditures account for 72% of energy costs in educational buildings and of that, more than half is for lighting energy costs. Annual lighting energy usage totals 36 billion kWh. Another study, conducted by American School and University magazine, determined that electricity costs account for half of the total utility costs incurred by educational facilities. And these studies have not taken into account the recent increases in energy costs. So the economic impact of lighting their facilities is one not taken lightly by school administrators. COST OF ENERGY SITE ELECTRICITY USE IN EDUCATION BUILDINGS IN EDUCATION BUILDINGS $7,129 million 65 billion kWh Electricity $5,168 million Ventilation District Heat 4 billion kWh $595 million Lighting 36 billion kWh Cooling Fuel Oil 6% ..10 billion kWh $249 million Space Heating Natural Gas 4 billion kWh $1,117 million Note: Due to rounding, individual figures may not sum to totals. Other* Source: Energy Information on Administration, 1995 Commercial Buildings 7 billion kWh Energy Consumption Survey. Office Equipment 3 billion kWh Energy Usage Characteristics of Educational Facilities ' Other includes miscellaneous uses (2 billion kWh, water heating (2 billion kWh), refrigeration (2 billion kWh), and cooking (1 billion kWh). Note: Due to rounding, individual figures may not sum to totals. Source: Energy Information on Administration, 1995 Commercial Buildings Energy Consumption Survey. The use of lighting controls can reduce these expenditures significantly. Expected savings from the use of occupancy sensors in classrooms alone can range from 10-50%. These savings are realized simply by turning lighting off when the rooms are unoccupied and lighting is not necessary. Other lighting controls can reduce lighting energy usage as well. For instance, the EPA has estimated that the use of daylighting controls can result in savings ranging up to 40%. Perhaps most importantly, these savings can be realized without affecting the quality of educational activities or the efficacy of the learning environment. 5 BEST COPY AVAILABLE www.wattstopper.com 800.879.8585 A K-12 School Space Usage The types of facilities and spaces used in schools vary, depending upon the grade level of the institution. The pie chart below illustrates the average percentage of floor space for common space types found in K-12 facilities. Space usage is an important consideration. Elementary and middle/high school classrooms, for instance, are primarily differentiated by the way the space is used. While often the teacher "owns" the classroom regardless of educational level, occupants and activities can vary depending on educational level. In elementary schools, occupants in a classroom generally remain the same throughout the school day while the educational activities change. At the middle/high school levels, however, students move between classrooms throughout the day while activities in each classroom remain similar. These differences in space usage should be considered in the lighting controls decision. For instance, differences in space usage would impact a decision on the use of daylighting controls. Classrooms, where students are engaged in reading or computer work are better suited to the use of continuous dimming controls, while in hallways, where occupancy may be more transient and students are moving, would be well suited to ON/OFF daylight switching controls. Space ownership plays an equally important role in the design and selection of lighting controls. In areas where ownership is strongest, manual overrides might be desirable. Common areas, where no single occupant or group of occupants is dominant, benefit more from purely automated control. Hallways/Circulation 15% Restrooms Other 5% 7% Administration 6% Phys Ed 21% Food Service 5% Media Center 5% Classrooms 36% Average % of Floorspace by Space Type for Schools a www.wattstopper com 800.879.8585 School Design Guidelines A well designed control system requires the consideration of energy codes, the occupants' and building owner's control needs, building use patterns and the type of lighting that's used in each space. Listed below are some general lighting control best practice principles for space types in schools. General Considerations Mount occupancy sensors at least 6 to 8 ft away from HVAC ducts. Ultrasonic sensors should be mounted on vibration free, stable surfaces and should not be used in areas of heavy air flow, moving objects, or where the ceiling height is greater than 14 ft. If there is a concern that lighting could be turned off automatically or manually when people are still in a space, put in night lighting for safe egress. Use products that are durable and can resist abuse, such as stainless steel wall plates. Many lighting control devices have specific voltage and load rating requirements. Be sure to specify the device model that matches the correct voltage and load rating for the application. Classrooms Dual technology occupancy sensors are used for classrooms because of their optimal performance. Classrooms with hanging artwork that can move due to air flow, should utilize passive infrared sensors. Mount occupancy sensors so there is no detection outside the door. They should be mounted close to the teacher's desk, above the main level of activity, and below fixture mounting heights. They should not be placed where they could be covered by artwork, shelves or other furniture. Always include switches that provide manual override control of the lighting. If daylight is available, provide daylight responsive, continuous dimming control. Public Spaces/Common Areas Public spaces, such as hallways and restrooms, are best suited for automatic on/off control of lighting. If manual control is needed, use key operated switches or install switches in secured areas. If daylight is available, provide daylight responsive, stepped dimming control. Gymnasiums/Multipurpose Rooms For spaces with HID lighting requiring a restrike period, it is best to use a control panel with time based on/off control. A more energy efficient design can be accomplished by using bi-level control of HID fixtures with occupancy sensors and time based control for shut off after hours. Restrooms Ultrasonic sensors are the right choice for spaces such as restrooms with stalls even when there is no direct line of site of the occupant from the sensor. Exterior Using a lighting control panel with time clock and photocell, control exterior lighting to turn on at dusk and off at dawn. Program the clock to turn non-security lighting off early for energy savings. www.wattstopper.com 800.879.8585 "7 I I I A A Influential Factors for Lighting Control Energy Code Requirements Energy code compliance varies from state to state. Many states are adopting the new ASHRAE 90.1- 2001 standard, which requires automatic lighting shut-off in commercial buildings greater than 5000 square feet in individual spaces by using either time scheduling or occupancy sensors. Other states, such as California, have developed their own guidelines for lighting and other energy controls. Safety and Security Providing lighting when and where needed is a key factor of safety and security. In a public setting such as a school, security is of the utmost importance. Proper design and use of lighting controls is an integral part of addressing these concerns. Location and accessibility to manual controls, adequate night lighting, timely exterior lighting control, reliable system operation as well as other lighting control elements, all play a part in ensuring safety and security in schools. Energy Efficiency and Sustainable Building Designs With rising energy costs, making educational facilities operate as efficiently as possible is of increasing importance. Similarly, many new educational facilities are being designed using sustainable resource principles. These include architectural features, such as daylighting, and the use of building materials that are recyclable or environmentally benign. Community Center Functions Another trend that influences lighting and lighting control design is the increasing use of educational facilities as community centers for adult education and after-school programs. Extended and varying operating schedules alter the space usage, and impose additional needs for flexibility in lighting control. Will111111=1' 1 Y a www.wattstoppercom 800.879.8585 SCHOOLS Summary of Best Practices for Lighting Control in Schools The table below summarizes the lighting control best practices for school spaces shown in this guide. These best practices address typical control needs in the most common space types. However, control needs will vary from project to project and with school type. Although not described in this guide, many other areas in a school are ideal for lighting control including administrative offices, libraries, cafeterias, auditoriums, storage areas, field lighting, locker rooms, and more. Best Practices Summary Space Best Practice manual override occupancy sensing Classroom C1.0 manual override occupancy sensing Classroom (hanging mobiles) C1.0.5 manual override bi-level switching occupancy sensing Classroom C1.1 manual override bi-level switching occupancy sensing Classroom C1.2 daylighting (stepped dimming) manual override occupancy sensing Classroom (partitioned) C2.0 bi-level switching manual override occupancy sensing Classroom (partitioned) C2.1 manual override bi-level switching occupancy sensing Classroom C3.0 daylighting (continuous dimming) manual override manual dimming occupancy sensing Classroom (skylight) C3.1 daylighting (continuous dimming) www.wattstopper.com 800.879.8585 SCHOO Best Practice Best Practices Summary Space G1.0 Gymnasium time scheduling bi-level HID manual override night lighting Gymnasium time scheduling G1.1 bi-level HID time switch occupancy sensing night lighting manual override Gymnasium (partitioned) G2.0 time scheduling manual override H1.0 Hallway, vestibule, lobby time scheduling occupancy sensing M1.0 Multipurpose room occupancy sensing manual override bi-level switching Large restroom R1.0 occupancy sensing manual override fan control Small restroom R2.0 occupancy sensing manual override fan control Faculty/individual restroom R3.0 occupancy sensing manual override fan control Exterior lighting E1.0 time scheduling manual override photocell COPY AVM LE iN 10 www.wattstopper.com 800.879.8585