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ORANGE COUNTY 230923-4 <br /> <br />Emergency Management Warehouse Building Dehumidification Extension of Existing Direct Digital <br /> Control System for HVAC <br /> <br />Digital control equipment shall comply with the following: 1 <br /> 2 <br />Digital control equipment shall be designed to operate in ambient conditions of 35 to 120 degrees F at a 3 <br />relative humidity of 0 to 95 percent non-condensing. 4 <br /> 5 <br />Control units as hereinafter specified shall operate properly with power fluctuations of plus 15 percent to 6 <br />minus 10 percent of nominal supply voltage. 7 <br /> 8 <br />Electric and electronic equipment shall be properly mounted and organized in a grounded and Listed NEMA 1 9 <br />cabinet (panel). Cabinets or enclosures shall protect equipment from dust, liquids or accidental blows. 10 <br /> 11 <br /> 12 <br />NETWORK COMPONENTS 13 <br /> 14 <br />Via either direct or web browser access, the following functions shall be provided: 15 <br /> 16 <br />Global Data Access: The server shall provide complete access to distributed data defined anywhere in 17 <br />the system. 18 <br /> 19 <br />Distributed Control: The server shall provide the ability to execute global control strategies based on 20 <br />control and data objects in any control unit. 21 <br /> 22 <br />Network Software: Software shall be upgraded as necessary to include the following capabilities: 23 <br /> 24 <br />I/O capability from any network operator workstation or through a browser. The system operator 25 <br />interface shall be an easy to use, self-guiding, menu-penetration, windowing approach. Key features 26 <br />that shall be included in the interface are as follows: 27 <br /> 28 <br />Object/point descriptions used for applications such as graphics, reports, alarms, etc. shall be 29 <br />same as the object/point name as specified above. 30 <br /> 31 <br />Engineering units shall be the English ("inch-pound") system. 32 <br /> 33 <br />Interactive operation and help messages. 34 <br /> 35 <br />Organization of points into logical groups or “systems” and an information penetration scheme 36 <br />that provides quick and simple method for maintenance staff to determine HVAC conditions 37 <br />and problems at any school, as follows: 38 <br /> 39 <br />Initial facility information display will be one or more graphic "floor plans" that include 40 <br />basic site information and specific room by room data. Each of these data points are 41 <br />displayed as "hot buttons" so that selecting any data display takes the user to next, 42 <br />more detailed information level. The floor plan display(s) shall provide display of 43 <br />room numbers, along with temperature, humidity, CO2, occupancy, etc. conditions in 44 <br />each space. Designation of the HVAC terminal unit, air unit, and/or system serving 45 <br />each space shall also displayed and selecting that hot button shall take the operator 46 <br />to the detailed system points display for that terminal unit, air unit, and/or system 47 <br />serving the room. 48 <br /> 49 <br />At the HVAC system, subsystem, or component level, a graphical display or "tree 50 <br />structure" structure display may be utilized, as selected by the user. 51 <br /> 52 <br />Site information shall include direct hot button links to primary heating and cooling 53 <br />systems. (For example, selecting "CHWSTemp" shall take the operator immediately 54 <br />to the graphic or tree structure display of the facility chilled water cooling system, 55 <br />while selecting "HWSTemp" shall lead to the facility hot water heating system.) 56 <br /> 57 <br />Pictorial representation of data on color graphic terminals with dynamic data. 58 <br /> 59 <br />Capability to alternate between graphic and text displays for the same logical group. 60 <br />61 <br />DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951