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ORANGE COUNTY 230923-12 <br /> <br />Emergency Management Warehouse Building Dehumidification Extension of Existing Direct Digital <br /> Control System for HVAC <br /> <br />INTERFACE WITH OEM CONTROLLERS/GATEWAYS 1 <br /> 2 <br />Section 230924 addresses specific requirements for equipment or subsystem OEM controllers/gateways that 3 <br />must interface with a facility DDC system may be encountered. The OEM is responsible for coordination 4 <br />between the DDC system sub-contractor and OEM unit controls provided to ensure that required control 5 <br />interface is implemented, resulting in full interoperability between OEM unit controls and the DDC system. 6 <br /> 7 <br />The OEM shall provide a Protocol Implementation Conformance Statement (PICS) that identifies the particular 8 <br />objects and options specified by BACnet or LonMark, as applicable, that are implemented in the OEM 9 <br />controller/gateway. The controls system sub-contractor shall utilize the information provided by the OEM to 10 <br />correctly interface the DDC system with the OEM controllers/gateways provided and coordinate with the OEM to 11 <br />ensure that the interface provided complies with the information/data provided by the OEM. 12 <br /> 13 <br />INSTALLATION 14 <br /> 15 <br />Provide skilled technicians, properly trained and qualified for the work and directed by experienced engineers. 16 <br /> 17 <br />Except for short apparatus connections, run raceway and pneumatic tubing parallel to or at right angles to the 18 <br />building structure. Conceal raceway and tubing in finished spaces. 19 <br /> 20 <br />Do not run tubing or raceway concealed under insulation or inside ducts. Mount control devices, tubing and 21 <br />raceway located on ducts or apparatus with external insulation on standoff supports to avoid interference with 22 <br />insulation. 23 <br /> 24 <br />Run tubing and wire connecting devices on or in control cabinets parallel with the sides of the cabinet neatly 25 <br />racked to permit tracing. Rack connections bridging a cabinet door along the hinge side and protect from 26 <br />damage. Provide grommets, sleeves or vinyl tape to protect plastic tubing or wires from sharp edges of panels, 27 <br />raceway, and other items. 28 <br /> 29 <br />Cabling and Wiring Installation: 30 <br /> 31 <br />Raceway: All control cabling and interlock wiring shall be installed in raceway. 32 <br /> 33 <br />Exception: Where Class 2 wiring is located in concealed and accessible locations, including 34 <br />supply or return air plenums, plenum-rated cables complying with NFPA 262 may be installed 35 <br />without raceway, provided that: 36 <br /> 37 <br />Circuits meet NFPA 70 Class 2 (current-limited) requirements. 38 <br /> 39 <br />All cables shall be UL-listed for the application. 40 <br /> 41 <br />Do not install Class 2 wiring in raceway containing Class 1 wIring. Boxes and panels containing 42 <br />high voltage (120 V+) may not be used for low voltage wiring except for the purpose of interfacing the 43 <br />two via relays, transformers, etc. 44 <br /> 45 <br />Shielded, twisted pair cable shielding shall be grounded at each connection point. 46 <br /> 47 <br />Fiber Optic Cable: 48 <br /> 49 <br />Route all interior cables in raceway within walls and inaccessible ceiling spaces. 50 <br /> 51 <br />Use nylon bushings at top of conduit where stubbed in accessible ceiling spaces. 52 <br /> 53 <br />Support all cables using J type hooks where open cable is permitted. 54 <br /> 55 <br />Route all fiber optic cable in raceway with innerducts. The innerducts shall contain a pull string, 56 <br />if no fiber is pulled at the time of the installation of the duct. 57 <br /> 58 <br />All conduit where fiber optic cable is installed shall be sized to maintain the manufacturer’s 59 <br />recommended bend radius of fiber optic cables. As a minimum, conduit shall be provided with 60 <br />long radius elbows. 61 <br />62 <br />DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951