Smoke-heat Detector Spacing

Detector Spacing Smoke Detectors • Approximately 30’-0” O.C. • Not more than 15’-0” from the ends of corridors or rooms Heat Detectors • 625 sqft per unit General • Photo-electric type smoke detectors shall be used in rooms and corridors.

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Use rate of rise type heat detectors in janitor’s closets, small storage rooms and kitchens Use fixed temperature heat detectors in mechanical equipment rooms at 135F o Use 190F fixed temperature type in boiler rooms Provide a smoke detector in each elevator equipment room and the main telephone equipment room on all projects which have a fire alarm system. Use ionization detectors for duct mounted type. Perform all fan shutdown relaying from the fire alarm control panel. Make sure you specify enough auxiliary relays. Provide auxiliary contacts for detectors in elevator lobbies for elevator recall. On state work, provide remote indications for all duct detectors. Locate at entrance to mechanical equipment room. Provide separate trouble zones for all sprinkler OS&Y tamper switches. Do not wire OS&Y tamper switches to flow switch zones. All fire alarm control panels shall be specified with battery backup. Provide provision to add municipal ties in all fire alarm control panels. Provide smoke detectors in each elevator lobby. Provide (2) control modules in the elevator machine room next to the elevator controller.