Orange County NC Website
Southern Human Services Center Smith Sinnett /2020072 <br />HVAC and Roof Renovations Orange County, North Carolina <br />BAS DIRECT DIGITAL CONTROL SYSTEM <br /> 23 09 02 - 1 <br />SECTION 23 09 02 <br />BAS DIRECT DIGITAL CONTROL SYSTEM <br />PART 1 GENERAL <br />1.01 WORK INCLUDED: <br />A.A fully integrated Building Automation System (BAS), incorporating direct digital control (DDC) for <br />energy management, equipment monitoring and control, and subsystems with open <br />communications capabilities as herein specified. <br />B.Furnish all labor, materials, equipment and service necessary for a complete and operating <br />Building Automation System (BAS), utilizing Direct Digital Controls. <br />C.Coordinate with General Contractor and Mechanical Contractor on schedule and general <br />sequencing of Work. (ADD 01) <br />D.BID ALTERNATE: <br />E.The system that is installed under this project must be integrated to the Owner's existing Siemens <br />building automation server front end. <br />F.The system will integrate and communicate to the existing BMS server (Desigo by Siemens) <br />flawlessly so that all information and points can be viewed from the existing automation software <br />and BMS server. The Owner shall be able to log onto the existing automation server and navigate <br />to the control system that is being installed as part of this project. Information from other sites shall <br />be able to be transmitted and shared in its entirety. <br />G.BASE BID: <br />1.If the BAS Contractor does not have an existing server and front end with Orange County, the <br />y shall provide a server, a Niagara 4 license for the amount of points on the project plus 20%, <br /> and integrate all equipment under this project to it. <br />2.Provide graphics similar to Owner's existing graphics (Add 01) <br />H.The installation of the control system shall be performed under the direct supervision of the <br />controls manufacturer representative with the shop drawings, flow diagrams, bill of materials, <br />component designation or identification number and sequence of operation all bearing the name of <br />the manufacturer. The installing contractor shall certify in writing, that the shop drawings have <br />been prepared by the equipment manufacturer representative and that the equipment <br />manufacturer representative has supervised their installation. In addition, the equipment <br />manufacturer representative shall certify, in writing, that the shop drawings were prepared by their <br />company and that all temperature control equipment was installed under their direct supervision. <br />I.Provide system graphics for each controlled device and/or integrated systems as required by the <br />Owner. Origin of information shall be transparent to the operator and shall be controlled, displayed, <br />trended, etc. as if the points were hardwired to the BMS. <br />1.02 GENERAL PRODUCT DESCRIPTION <br />A.All materials and equipment used shall be standard components, regularly manufactured for this <br />and/or other systems and not custom designed especially for this project. All systems and <br />components shall have been thoroughly tested and proven in actual use for at least two years. <br />B.The system shall be scalable in nature and shall permit expansion of both capacity and <br />functionality through the addition of sensors, actuators, DDC Controllers, and operator devices. <br />C.System architectural design shall eliminate dependence upon any single device for alarm reporting <br />and control execution. Each DDC Controller shall operate independently by performing its own <br />specified control, alarm management, operator I/O, and data collection. The failure of any single <br />component or network connection shall not interrupt the execution of any control strategy, <br />reporting, alarming and trending function, or any function at any operator interface device. <br />D.DDC Controllers shall be able to access any data from, or send control commands and alarm <br />reports directly to, any other DDC Controller or combination of controllers on the network without <br />dependence upon a central or intermediate processing device. DDC Controllers shall also be able <br />to send alarm reports to multiple operator workstations without dependence upon a central or <br />DocuSign Envelope ID: 17058488-BE46-4277-9E77-433E3054E269