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Orange County West Campus Office Building -HVAC <br />PDC Project 23020 Testing,Adjusting,and Balancing for <br />HVAC 23 05 93 - 1 <br />SECTION 23 05 93 <br />TESTING,ADJUSTING,AND BALANCING FOR HVAC <br />PART 1 GENERAL <br />1.01 SECTION INCLUDES <br />A.Testing,adjustment,and balancing of air systems. <br />B.Measurement of final operating condition of HVAC systems. <br />C.Commissioning activities. <br />1.02 REFERENCE STANDARDS <br />A.AABC (NSTSB)-AABC National Standards for Total System Balance,7th Edition;2016. <br />B.ASHRAE Std 111 -Measurement,Testing,Adjusting,and Balancing of Building HVAC Systems; <br />2008. <br />C.NEBB (TAB)-Procedural Standards for Testing Adjusting and Balancing of Environmental <br />Systems;2015,with Errata (2017). <br />1.03 SUBMITTALS <br />A.TAB Plan: Submit a written plan indicating the testing,adjusting,and balancing standard to be <br />followed and the specific approach for each system and component. <br />1.Submit to Architect. <br />2.Submit to the Commissioning Authority. <br />B.Include at least the following in the plan: <br />1.Indicate standard to be followed (AABC or NEBB) <br />2.List of all ​airflow and system capacity​ and efficiency measurements to be performed and a <br />description of specific test procedures,parameters,formulas to be used. <br />3.Copy of field checkout sheets and logs to be used,listing each piece of equipment to be <br />tested,adjusted and balanced with the data cells to be gathered for each. <br />4.Identification and types of measurement instruments to be used and their most recent <br />calibration date. <br />5.Discussion of what notations and markings will be made on the duct and piping drawings <br />during the process. <br />6.Final test report forms to be used. <br />7.Detailed step-by-step procedures for TAB work for each system and issue,including: <br />a.Terminal flow calibration (for each terminal type). <br />b.Diffuser proportioning. <br />c.Branch/submain proportioning. <br />d.Total flow calculations. <br />e.Rechecking. <br />f.Diversity issues. <br />8.Details of how TOTAL flow will be determined;for example: <br />a.Air: Sum of terminal flows via control system calibrated readings or via hood readings of <br />all terminals,supply (SA)and return air (RA)pitot traverse,SA or RA flow stations. <br />9.Specific procedures that will ensure that systems are operating at the lowest possible <br />pressures and methods to verify this. <br />10.Confirmation of understanding of the outside air ventilation criteria under all conditions. <br />11.Method of verifying and setting minimum outside air flow rate will be verified and set and for <br />what level (total building,zone,etc.). <br />12.Method of checking building static and exhaust fan and/or relief damper capacity. <br />13.Methods for making coil or other system plant capacity measurements,if specified. <br />14.Time schedule for TAB work to be done in phases (by floor,etc.). <br />15.Description of TAB work for areas to be built out later,if any. <br />16.Time schedule for deferred or seasonal TAB work,if specified. <br />17.False loading of systems to complete TAB work,if specified. <br />Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D