Orange County NC Website
Browse       Search
Construction Documents <br />20033 <br />Orange County Europa Center <br />28 4600 - 12 FIRE DETECTION AND ALARM <br />L. Surge Protection: In accordance with IEEE C62.41.2 category B combination waveform and <br />NFPA 70; except for optical fiber conductors. <br />1. For each AC power circuit that interfaces with fire alarm equipment install an AC <br />suppressor in a listed enclosure near the electrical panelboard, and trim excess lead <br />lengths. Wind small coil in the branch circuit conductor just downstream of the suppressor <br />connection. Coil to be 5 to 10 turns, about 1" diameter, and securely tie-wrapped. This <br />series impedance will improve the effectiveness of the suppressor in clipping fast rise time <br />voltage transients. <br />2. Equipment Connected to Alternating Current Circuits: Maximum let through voltage of 350 <br />V(ac), line-to-neutral, and 350 V(ac), line-to-line; do not use fuses. <br />3. Initiating Device Circuits, Notification Appliance Circuits, and Communications Circuits: <br />Provide surge protection at each point where circuit exits or enters a building; rated to <br />protect applicable equipment; for 24 V(dc) maximum dc clamping voltage of 36 V(dc), <br />line-to-ground, and 72 V(dc), line-to-line. <br />4. On DC circuits extending outside the building: Provide surge protection at each point <br />where circuit exits or enters a building, rated to protect applicable equipment. <br />M. Locks and Keys: Deliver keys to Owner. <br />1. Provide the same standard lock and key for each key operated switch and lockable panel <br />and cabinet; provide 5 keys of each type <br />N. Instruction Charts: Printed instruction chart for operators, showing steps to be taken when a <br />signal is received (normal, alarm, supervisory, and trouble); easily readable from normal <br />operator's station. <br />1. Frame: Stainless steel or aluminum with polycarbonate or glass cover. <br />2. Provide one for each control unit where operations are to be performed. <br />3. Obtain approval of Owner prior to mounting; mount in location acceptable to Owner. <br />4. Provide extra copy with operation and maintenance data submittal. <br />PART 3 EXECUTION <br />3.01 INSTALLATION <br />A. Install in accordance with applicable codes, NFPA 72, NFPA 70, and Contract Documents. <br />B. Conceal all wiring, conduit, boxes, and supports where installed in finished areas. <br />C. All equipment supplied must be specifically listed for its intended use and shall be installed in <br />accordance with the manufactures recommendations. The contractor shall consult the <br />manufacturer’s installation manuals for all wiring diagrams, schematics, physical equipment <br />sizes, etc., before beginning system installation. Contractor shall refer to the Riser/Connection <br />diagram for all specific system installation/termination/wiring data. <br />D. All system components shall be attached to walls and ceiling/floor assemblies and shall be held <br />firmly in place (e.g., detectors shall not be supported solely by suspended ceilings). Fasteners <br />and supports shall be adequate to support the required load. Adhesives are not permitted to <br />mount fire alarm system components to building surfaces or structure. <br />E. The system shall be electrically supervised for open or ground fault conditions in SLC, alarm <br />and control circuits. Removal of any detection device, alarm appliance, plug-in relay, system <br />module, or standby battery connection shall also result in a trouble signal. <br />F. When programming the system, activate the automatic drift compensation feature for all spot- <br />type smoke detectors. Systems with alarm verification are not to have this feature activated <br />without written direction from the owner’s representative or the AHJ. Alarm verification must not <br />be used with multi-sensor/multi-criteria detectors under any circumstances, as inadequate <br />system response may result. Most applications of analog addressable smoke detectors do not <br />require alarm verification to reduce nuisance alarms, as they are better able to discriminate <br />between fire and common non-fire ambient events. A short operational test with normal <br />occupancy can determine if transient ambient events are a problem <br />DocuSign Envelope ID: ECCAC5A0-6CC8-4B37-8AD3-89D69F0AE1AE