Orange County NC Website
Construction Documents <br />20033 <br />Orange County Europa Center <br />28 4600 - 11 FIRE DETECTION AND ALARM <br />2) After each 20 initiating devices and control points on the addressable loop. <br />3) For loops with 20 or less control points install isolation module in approximately <br />the middle of the loop. <br />4) Near the point where any addressable loop extends outside the building <br />envelope. <br />5) For loops covering more than one floor where addressable loop crosses <br />between floors. <br />d. Each isolation module must be clearly labeled, readily accessible for convenient <br />inspection. <br />5. Remote Annunciator Indicator Lights (RAIL): RAILs shall be provided with a key type <br />switch for testing of the annunciated device. In addition, RAILs shall have the following <br />features: Voltage: RAILs shall operate on 24 VDC nominal. <br />6. Battery Power Supply (BPS) &/or Supplementary Notification Appliance Circuit (SNAC): <br />These types of panels shall be completely maintenance free, shall not require liquids, fluid <br />level checks or refilling, and shall not be capable of producing spills and/or leaks. Batteries <br />shall be sealed gel-cell type with expected life of 10 years. Battery voltage shall be as <br />required by the FACP and related equipment. Battery shall have sufficient capacity to <br />power the fire alarm system for not less than 60 hours plus 15 minutes of alarm upon a <br />normal AC power failure. Battery cabinet shall be twice the size of the batteries it will <br />contain. NAC circuits shall not exceed 75% of maximum current load allowed. <br />a. The voltage drop at EOL must not exceed 14% of the expected battery voltage after <br />the required standby and alarm times. Determine worst case voltage at far end of <br />each NAC circuit. The results must not be than the minimum listed rating on the <br />device. <br />b. Where voltage drop or capacity limits are exceeded provide additional NAC panels as <br />required for a fully functional system. <br />c. All power supplies shall be capable of withstanding prolonged short circuits in the field <br />wiring, either line-to-line or line-to-ground, without damage. <br />d. All power supplies shall be equipped with battery charging using dual-rate charging <br />techniques for fast battery recharge. <br />7. Enclosure: All equipment enclosures shall be third party listed suitable for surface or <br />semi-flush mounting. Cabinet and front shall be corrosion resistant, given a rust-resistant <br />prime coat, and manufacturer's standard finish. The door shall provide a key lock and a <br />glass opening for viewing indicators. Door hinge shall be field selectable (left or right). <br />K. Wiring <br />1. Addressable loop (signaling line) circuits shall be wired with type FPL/FPLR/FPLP fire <br />alarm cable, AWG 18 minimum, low capacitance, twisted shielded copper pair. Cable <br />shield drain wires are to be connected at each device on the loop to maintain continuity, <br />taped to insulate from ground, and terminated at the FACP. Acceptable cables include <br />Atlas 228-18-1-1STP, BSCC S1802s19 (same as EEC 7806LC), West Penn D975, D991 <br />(AWG 16), D995 (AWG 14), or equal wire having capacitance of 30pf/ft. maximum <br />between conductors. Belden 5320FJ acceptable if only FPL rating needed. <br />a. Unshielded cable, otherwise equal to the above, is permitted to be used if the <br />manufacturer’s installation manual requires, or states preference for, unshielded <br />cable. <br />b. In underground conduit, use Type TC or PLTC cable (PE insulated) to avoid problems <br />from moisture. <br />c. The following conductor color coding shall be maintained throughout the system: <br />1) Initiating Circuits: Red (+)/White (-) <br />2) Initiating Circuits, Smoke Only: Violet (+)/Grey (-) <br />3) Signal Line Circuits: Red jacket with Red (+)/Black(-) <br />4) Alarm Indicating Appliance Circuits: Blue (+)/Black(-) <br />5) AHU Shutdown Circuits: Yellow (+)/Brown (-) <br />2. Supervision must be provided between individual addressable modules and their <br />associated contact type initiating devices. <br />DocuSign Envelope ID: ECCAC5A0-6CC8-4B37-8AD3-89D69F0AE1AE