2024-390-E-AMS-Brady Services-WCOB Server Room HVAC

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Orange County West Campus Office Building -HVAC PDC Project 23020 General Commissioning Requirements 01 91 13 - 7 B.Provide all necessary materials and system modifications required to produce the flows, pressures,temperatures,and conditions necessary to execute the test according to the specified conditions. At completion of the test,return all affected equipment and systems to their pre-test condition. C.Sampling: Where Functional Testing of fewer than the total number of multiple identical or near- identical items is explicitly permitted,perform sampling as follows: 1.Identical Units: Defined as units with same application and sequence of operation;only minor size or capacity difference. 2.Sampling is not allowed for: a.Major equipment. b.Life-safety-critical equipment. c.Prefunctional Checklist execution. 3.XX =the percent of the group of identical equipment to be included in each sample;defined for specific type of equipment. 4.YY =the percent of the sample that if failed will require another sample to be tested;defined for specific type of equipment. 5.Randomly test at least XX percent of each group of identical equipment,but not less than three units. This constitutes the "first sample." 6.If YY percent of the units in the first sample fail,test another XX percent of the remaining identical units. 7.If YY percent of the units in the second sample fail,test all remaining identical units. 8.If frequent failures occur,resulting in more troubleshooting than testing,the Commissioning Authority may stop the testing and require Contractor to perform and document a checkout of the remaining units prior to continuing testing. D.Manual Testing: Use hand-held instruments,immediate control system readouts,or direct observation to verify performance (contrasted to analyzing monitored data taken over time to make the “observation”). E.Simulating Conditions: Artificially create the necessary condition for the purpose of testing the response of a system;for example apply hot air to a space sensor using a hair dryer to see the response in a VAV box. F.Simulating Signals: Disconnect the sensor and use a signal generator to send an amperage, resistance or pressure to the transducer and control system to simulate the sensor value. G.Over-Writing Values: Change the sensor value known to the control system in the control system to see the response of the system;for example,change the outside air temperature value from 50 degrees F to 75 degrees F to verify economizer operation. H.Indirect Indicators: Remote indicators of a response or condition,such as a reading from a control system screen reporting a damper to be 100 percent closed,are considered indirect indicators. I.Monitoring: Record parameters (flow,current,status,pressure,etc.)of equipment operation using dataloggers or the trending capabilities of the relevant control systems;where monitoring of specific points is called for in Functional Test Procedures: 1.All points that are monitored by the relevant control system shall be trended by Contractor;at the Commissioning Authority’s request,Contractor shall trend up to 20 percent more points than specified at no extra charge. 2.Other points will be monitored by the Commissioning Authority using dataloggers. 3.At the option of the Commissioning Authority,some control system monitoring may be replaced with datalogger monitoring. 4.Provide hard copies of monitored data in columnar format with time down left column and at least 5 columns of point values on same page. 5.Graphical output is desirable and is required for all output if the system can produce it. 6.Monitoring may be used to augment manual testing. 3.08 OPERATION AND MAINTENANCE MANUALS A.See Section 01 78 00 -Closeout Submittals for additional requirements. Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D