2022-133-E-AMS-Warren Hay Mechanical Contractors-Emergency Services Warehouse Dehumidification

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ORANGE COUNTY 230923-16 Emergency Management Warehouse Building Dehumidification Extension of Existing Direct Digital Control System for HVAC Software for checking input commands and issuing error messages. Enter various correct and incorrect 1 commands. 2 3 System and point addressing check. Enter command to display I/O data. Verify all data points defined on 4 the drawings and/or required by the specifications. 5 6 Start-stop or enable-disable of HVAC equipment or DDC system control points. Enter commands to 7 start/stop selected HVAC equipment, and to disable and enable selected points. 8 9 Operator override/automatic mode. Enter command to change selected automatic control under DDC 10 system to manual and vice versa. 11 12 Display format. Enter commands to display data and graphics on terminal and graphic display. Check 13 display content for adequacy and clarity as specified. 14 15 Ability to modify, cancel and confirm operator’s commands. Verify by entering commands. 16 17 Set-point adjustment and limiting. Enter commands to adjust set points of controllers and range limits of 18 the controlled media. Verify by display. Also enter commands to adjust set-points outside their range 19 limits. DDC system shall display error messages. 20 21 System access and access level control. Try to log on to system with both incorrect and correct ID codes. 22 Try to enter different commands with different access level of the operators. The responses of the DDC 23 system shall be as specified. 24 25 Start/stop equipment. Enter command to start or stop selected equipment. Also reset time to initiate 26 automatic mode. Verify responses by observation of equipment and DDC system display. 27 28 Change parameter of points. Enter commands to change parameters of selected points such as high and 29 low limit alarms, scale factor, etc. to test the adequacy of software. 30 31 Verify graphic display of each HVAC system and component. Confirm that the graphic is in accordance with the 32 design data and reviewed submittals, includes all data points required, displayed data is correct and in the 33 correct format and units, and changes in point conditions or status are accurately updated. Evaluate the refresh 34 rate of data display. 35 36 Verify report generation (status, profile, energy, etc.) by entering commands to generate reports such as all 37 points, trend, total display of a system, timed display, and other specified reports. Examine the report content for 38 general format, system/point code, time interval of reporting, point status/value/unit, energy amount/rate/unit, 39 status of control and set time (manual or automatic), and other specification required information. 40 41 Check for proper operation of system status reports, including point status reviews which would include 42 information such as points currently in alarm, points removed from alarm checking, points off of scan, 43 etc. 44 45 Test alarm reporting by initiating alarm conditions of different points at different alarm levels in 46 sequence to examine alarm reports. The reports shall show alarm location and device, alarm time, 47 cause of alarm, current status of the point, etc. as required in the specifications. When alarm conditions 48 are removed the printer shall print updated status report. Also verify audible alarm operations in 49 accordance with specification requirements. Then initiate alarm conditions at different levels at the 50 same time to check alarm priority. 51 52 Trending performance shall be tested by creating trend logs for each control sequence and monitoring the trend 53 reports throughout the period that each control sequence is tested. 54 55 OWNER INSTRUCTION AND TRAINING 56 57 Provide Owner instruction and training in accordance with Section 019926. 58 59 END OF SECTION 230923 60 DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951