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I <br />I <br />I <br />I <br />I <br />i <br />f <br />r <br />I <br />I <br />c <br />r <br />h" <br />2 <br />■j <br />PART 3 - EXECUTION <br />3.01 <br />A. <br />B. <br />C. <br />D. <br />E. <br />INSTALLATION <br />Provide all necessary wiring and conduit to connect automatic <br />temperature control components to secure an operational ATC <br />system. <br />WorKmanship. Wiring and the installation thereof shall con­ <br />form to NFPA 70. <br />Identification; Label or code each field wire at each end. <br />Permanently label or code each point of all field terminal <br />strips to show the instrument or item served. Color coded <br />cable with annotated cable diagram may be used to accomplish <br />cable identification. <br />Temperature Sensors; Stabilize sensors to permit on-the-job <br />installations that will require minimum field adjustments <br />or calibrations. Temperature sensor assemblies shall be <br />readily accessible and adaptable to each type of application <br />in such manner as to allow for quiclc. easy replacement and <br />servicing without special tools or sicills. The liq’-’ d tem­ <br />perature sensors shall be provided with wells. Out ,'jor in­ <br />stallations shall be of weatherproof construction, designed <br />to exclude driving rain or snow, or in suitable NEMA enclosures <br />where located in finished spaces. <br />Duct Sensors; Provide sensors in ducts in general location <br />indicated on drawings; specific location within duct shall <br />allow accurate sensing of the air properties indicated or <br />specified. Do not locate in dead air spaces or positions <br />obstructed by such items as ducts or equipment. The location <br />of installation shall be within the vibration and velocity <br />limits of the sensing element. Where an extended surface <br />element is required to properly sense the average or <br />air temperature, it shall be positioned and securely mounted <br />within the duct in a manner approved by the sensor manufacturer. <br />Temperature sensing elements shall be thermally isolated from <br />brackets and supports to respond to air temperature only. <br />Provide separate duct flange for each sensing element; securely <br />seal ducts*where elements or connections penetrate duct. <br />Seal penetrations of duct insulation vapor barrier with vapor <br />barri,er coating compound to provide a vaportight , <br />Mount sensor enclosures so that they may be removed and serviced <br />without disturbance or removal of the duct installation or <br />vapor barrier. <br />F.Pipe Sensors; Provide all sensors measuring temperatures <br />in pressure vessels or In pipes larger than one inch in aia <br />meter except as specified herein# with wells properly <br />cated for the service. Wells shall be noncorrosive to the <br />medium being measured and shall have sufficient physical <br />strength to withstand all (including test) pressures and <br />15900-8 <br />n <br />u