Ceiling Mounted Fire Alarm Strobe

A plan view of a ceiling mounted fire alarm notification device s coverage area shows that the coverage projects outward along the strobe s mounting surface at an equal distance on all sides creating the square coverage areas listed in nfpa 72.

Ceiling mounted fire alarm strobe.

Most contractors install strobe lights to comply with the national fire alarm and signaling code by simply using a combination audible visible appliance everywhere one or the other is shown on the plans. Refer to the annex of nfpa 72 for exceptions to these guidelines a 18 5 4 3. 24vdc and 120vac fire alarm bells. In a sleek modern design the wheelock exceder strobes feature high efficiency optics to minimize current draw.

6 where the ceiling strobe is not located in the center of the room the candela level shall be determined by doubling the. See 18 5 4 1 and 18 5 4 2 and for ceiling mounted strobes no more than 30 ft. Ceiling mounted fire strobes should not be more than 30 feet above the floor. The strobe is always located in the center of the coverage area.

Except where an existing fire alarm system is upgraded or replaced or a new fire alarm system is installed the adaag goes on to. Low ceiling heights do not permit mounting at a minimum of 80 inches visible appliances shall be mounted within 6 inches of the ceiling. System sensor strobes which are available for indoor outdoor ceiling mount or wall mount varieties to meet a wide variety of applications are ideal for warning hearing impaired individuals during an emergency event. The fire alarm strobes offer a comprehensive feature set including an industry first of 8 candela settings on one appliance low current draw no tools needed for setting changes 12 24 vdc operation universal mounting base and multiple mounting options for both new and retrofit.

Sspkwlp series sspk24wlp and sspk24 15 75wlp series low profile wall mount speaker strobe. 5757 phantom drive suite 125 saint louis mo 63042. These calculations are described in nfpa 72 and are to be provided to the authority. This calculator uses data provided by the user to perform the calculations described in nfpa 72 2002 2007 2010 and 2013 edition which permits the use of a performance based alternative in lieu of tables for spacing ceiling mounted audible visible devices.

It should be obvious that if you follow this method of compliance you will either have an incorrect number of audible appliances or an incorrect number of visible appliances. If the ceilings are higher than 30 feet the strobes must be mounted on the wall.