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Specifications - City of Montpelier, Vermont

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<strong>Montpelier</strong> District Heating<strong>City</strong> <strong>of</strong> <strong>Montpelier</strong>, VTIssue Date:September 28, 2012Title:15900 – Direct Digital Control SystemPage #:4 <strong>of</strong> 40d. Methods and materials <strong>of</strong> constructione. Installation instructionsf. Recommended maintenance4. Equipment Schedules:D. S<strong>of</strong>twarea. Control dampersb. Control valves1. Sequences <strong>of</strong> Operation Submittals: The Contractor’s submittals <strong>of</strong> controldrawings shall include complete detailed sequences <strong>of</strong> operation for each piece<strong>of</strong> equipment, regardless <strong>of</strong> the completeness and clarity <strong>of</strong> the sequences in thespecifications or on the drawings.2. S<strong>of</strong>tware design data including flowchart <strong>of</strong> each DDC program showinginterrelationship between inputs, PID functions, all other functions, outputs, etc.and sequence <strong>of</strong> operation relating to all flowchart functions.3. Submit a schematic logic flow diagram graphically illustrating the proposedprogramming code. Include:a. Complete legend.b. Display all logic, hardware points, virtual points and actual point name.c. Annotate the subroutines liberally.d. A completed thorough description <strong>of</strong> each virtual point used, stating thepurpose, basis <strong>of</strong> nomenclature, formula FMS and interaction with otherpoints, in Plain English.4. Provide a full points list with at least the following included for each point:a. Controlled systemb. Point abbreviationc. Point descriptiond. Display unite. Control point or setpoint (Yes / No)DIRECT DIGITAL CONTROL SYSTEMS159724

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