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Application Genesis strobes are UL 1971-listedfor use indoors as wall- mounted public-mode notification appliances forthe hearing impaired. Prevailing codes require strobes to be used where ambient noise conditions exceed 105 dBA (87dBA in Canada), where occupants use hearing protection, and in areas of public accommodation as defined in the Americans with Disabilities Act (see application notes - USA). Genesis horns are synchronized and UL-listed for use in both sleeping and non-sleeping areas. They are intended for indoor wall-mount applications only. Combination horn/strobe signals must be installed in accordance with guidelines established for strobe devices. Strobe Spacing The following guidelines are based on ANSI/NFPA 72 National Fire Alarm Code (1999). When applied and installed in accor- dance with that code, EST strobes meet or exceed the illumina- tion produced by the ADA-specified 75 candela (cd) strobe at 50 feet. * Non-Sleeping Rooms EST wall mounted strobes* Up to 20' x 20' (6.1 m x 6.1 m) One 15 cd strobe Up to 30' x 30' (9.1 m x 9.1 m) One 30 cd or two 15 cd strobes Up to 40' x 40' (12.2 m x 12.2 m) One 60 cd or two 30 cd strobes Up to 50' x 50' (15.2 m x 15.2 m) One 110 cd or two 60 cd strobes Corridors 15 cd strobes spaced at 100' Any length. (30.5 m) max. Strobes must be Maximum width: 20' (6.1m). placed within 15' (4.5m) of each end of the corridor. . ADA suggests using 75 cd strobes throughout an area, with spacing that never exceeds 50ft from the strobe to any point in the protected space. Non-Sleeping Rooms and Corridors: EST strobes rated at less than 110 cd per UL 1971 are intended for use in non-sleeping areas only. Install with the bottom of the device at least 80 inches (2.0 m) and no more than 96 inches (2.4 m) above the finished floor. No point in any space (including corridors) required to have strobes should be more than 50 feet (15.2 m) from the signal (in the horizontal plane). In large rooms or spaces (such as auditoriums) that exceed 100 feet (30.4 m) across and without obstructions more than 72 inches (1.8 m) above the finished floor, strobes may be placed around the perimeter, spaced a maximum of 100 feet (30.4 m) apart. This is an alternative to suspending strobes from the ceiling. for detailed spacing requirements, consult The Handbook of Visible Notification Appliances for Fire Alarm Applications published by EST Press, or contact your local EST representative. Sleeping rooms: EST 110 cd strobes are intended for use in Sleeping rooms and should be installed along with a smoke detector. It must be wall mounted at least 80" (2.03m) above floor level, but no closer than 24" (610mm) to the ceiling. The distance from the strobe to the pillow must not exceed 16' (4.8m). Sleeping Rooms Any size EST wall mounted strobe 110 cd within 16 feet of pillow Horn Application The suggested sound pressure level for each signaling zone used with alert or alarm signals is at least 15 dB above the average ambient sound level, or 5 dB above the maximum sound level having a duration of at least 60 seconds, whichever is greater, measured 5 feet (1.5 m) above the floor. The average ambient sound level is, A- weighted sound pressure measured over a 24-hour period. ( ~, Genesis HO (High dB) Series Genesis Temporal Horn Average Output (anechoic, 24V) L -dBA @ 10 feet Doubling the distance from the signal to the ear will theoretically result in a 6 dB reduction ofthe received sound pressure level. The actual effect depends on the acoustic properties of materials in the space. A 3 dBA difference represents a barely noticeable change in volume. Application Notes - USA Audible signals in the public mode should never have a sound level less than 75 dBA at 10' (3 m) per NFPA 72. Signals cannot exceed 120 dBA per ADA (130 dBA per NFPA 72) at the minimum hearing distance to audible appliance. Strobe and combination horn/strobe devices should be installed with the bottom ofthe device at least 80 inches (2.0 m) and no more than 96 inches (2.4 m) abovethefinished floor. Horns should be installed with their tops not less than 6 inches (152 mm) below the ceiling and not less than 90 inches (2.3 m) above the finished floor. Strobes must be used to supplement audible signals wherever the average ambient sound level exceeds 105 dBA. Combination audible/visual signals must be installed in accordance with NFPA guidelines established for strobes. ADA requires visible signals in the following areas: . rest rooms, meeting rooms, and other common use areas. . sleeping rooms intended for use by persons with hearing impairment (in accordance with Title 1 of ADA). . work areas used by a person with a hearing impairment (per Title 1 of ADA). , ~ ( Page 2 of 6 EDWARDS SYSTEMS TECHNOLOGY Issue 5 Literature Sheet #85001-0529 .1_...._ ..._ .___...1 ,c_.. 1_-.40_1'_...:__ _..______