Both the IBC and NFPA 92A call for status indica- <br />tors for each fan, damper, and other device. The <br />ICC requires individual controls for each of these <br />devices, but permits them to be combined for com- <br />plex systems. A system need not be very large to <br />be considered complex. <br />A good, simple panel layout might feature a sin- <br />gle switch for each system or zone (Figure 7.4). <br />Each different position of the switch places the sys- <br />tem in a given mode, and the corresponding activa- <br />tion or setting of the individual devices would be <br />configured "behind the scenes. " For example, a <br />stair pressurization system might contain a three- <br />position switch for each of three modes: "auto- <br />matic, " "pressurize, " and "off. " <br />Zoned smoke control systems are often ar- <br />ranged with each floor as a separate zone. In other <br />cases, a floor may be split into multiple zones. <br />These should be indicated on a graphic display, <br />either on or adjacent to the smoke control panel. <br />See the section, Graphic Displays, on page 53, for <br />additional guidance on graphic displays. <br />J <br />• <br />Designers should not confuse smoke control <br />systems with smoke or heat venting systems. The <br />latter are mechanical systems for the removal of <br />smoke. They are often arranged to activate only <br />manually. In some cases, they only remove smoke <br />after an incident. <br />Considerations - Smoke Control Systems <br />■ Settings for atrium smoke exhaust switches: <br />"auto, " "exhaust, " "off. " <br />■ Settings for stair pressurization switches: <br />"auto, " "pressurize, " "off. " <br />• Settings for zoned smoke control switches: <br />"auto, " "exhaust, " "pressurize, " "off. " <br />■ If there is more than one zone per floor, pro- <br />vide a graphic diagram. <br />■ Settings for manual smoke venting system <br />switches: "exhaust, " "off. " <br />Appendix <br />Sources of Referenced Standards and Information <br />American Association of State Highway and <br />Transportation Officials <br />444 North Capitol Street, NW, Suite 249 <br />Washington, DC 20001 <br />Phone: (202) 624-5800 <br />Fax: (202) 624-5806 <br />http://www.transportation.org/aashto/home. <br />nsf/FrontPage <br />American National Standards Institute (ANSI) <br />1819 L Street, NW, 6th floor <br />Washington, DC 20036 <br />Phone: (202) 293-8020 <br />Fax: (202) 293-9287 <br />http://www.ansi.org <br />International Code Council <br />5203 Leesburg. Pike, Suite 600 <br />Falls Church, VA 22041 <br />Phone: (888) 422-7233 <br />Fax: (703) 379-1546 <br />http://www.iccsafe.org <br />National Fire Protection Association <br />1 Batterymarch Park <br />Quincy, MA 02169-7471 <br />Phone: (800) 344-3555 <br />Fax: (800) 593-6372 <br />http://www.nfpa.org <br />American Water Works Association <br />6666 W. Quincy Ave. <br />Denver, CO 80235 <br />Phone: (303) 794-7711 or (800) 926-7337 <br />Fax: (303) 347-0804 <br />http://www.awwa.org <br />64 01% <br />Occupational Safety and 180 <br />Health Administration <br />