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ORANGE COUNTY 230923-14 <br /> <br />Emergency Management Warehouse Building Dehumidification Extension of Existing Direct Digital <br /> Control System for HVAC <br /> <br />Test pneumatic components, as applicable: 1 <br /> 2 <br />After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist. 3 <br /> 4 <br />Pressure test control air piping at 1.5 times the operating pressure for 24 hours, with maximum 5 <br />5-psig loss. 6 <br /> 7 <br />Test calibration of control units by disconnecting input sensors and stimulating operation with 8 <br />compatible signal generator. 9 <br /> 10 <br />Test each control point through its full operating range to verify that safety and operating control set 11 <br />points are as required. 12 <br /> 13 <br />Test each control loop to verify stable mode of operation and compliance with sequence of operation. 14 <br /> 15 <br />Test each system for compliance with sequence of operation. 16 <br /> 17 <br />Test software and hardware interlocks. 18 <br /> 19 <br />DDC Verification: 20 <br /> 21 <br />Verify that instruments are installed before calibration, testing, and loop or leak checks. 22 <br /> 23 <br />Check instruments for proper location and accessibility. 24 <br /> 25 <br />Check instrument installation for direction of flow, elevation, orientation, insertion depth, and other 26 <br />applicable considerations. 27 <br /> 28 <br />Check instrument tubing for proper fittings, slope, material, and support. 29 <br /> 30 <br />Check installation of air supply for each instrument. 31 <br /> 32 <br />Check flow instruments. Inspect tag number and line and bore size, and verify that inlet side is 33 <br />identified and that meters are installed correctly. 34 <br /> 35 <br />Check pressure instruments, piping slope, installation of valve manifold, and self-contained pressure 36 <br />regulators. 37 <br /> 38 <br />Check temperature instruments and material and length of sensing elements. 39 <br /> 40 <br />Check control valves. Verify that they are in correct direction. 41 <br /> 42 <br />Check air-operated dampers. Verify that pressure gages are provided and that proper blade alignment, 43 <br />either parallel or opposed, has been provided. 44 <br /> 45 <br />Check DDC system as follows: 46 <br /> 47 <br />Verify that DDC controller power supply is from emergency power supply, if applicable. 48 <br /> 49 <br />Verify that wires at control panels are tagged with their service designation and approved tagging 50 <br />system. 51 <br /> 52 <br />Verify that spare I/O capacity has been provided. 53 <br /> 54 <br />Verify that DDC controllers are protected from power supply surges. 55 <br /> 56 <br />Replace damaged or malfunctioning controls and equipment and repeat testing procedures. 57 <br /> 58 <br /> 59 <br />DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951