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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Testing,Adjusting,and Balancing for <br />HVAC 23 05 93 - 5 <br />C.Obtain copies of approved shop drawings of all air handling equipment,outlets (supply,return,and <br />exhaust)and temperature control diagrams. <br />D.Compare design to installed equipment and field installations. <br />E.Walk the system to determine variations of installation from design. <br />F.Check filters for cleanliness. <br />G.Lubricate all motors and bearings. <br />3.05 ADJUSTMENT TOLERANCES <br />A.Air Systems Tolerances <br />Systems -Air Tolerances of Drawing <br />Design Remarks <br />Air Handling Units,Fans <br />(Supply,Return,Exhaust)-5%to +10%Systems with Filters must be tested <br />at dirty conditions <br />Outdoor Air 100%to 110%To obtain this accuracy requires <br />ductwork be traversed <br />Terminal Units +/-5% <br />Calibrate all boxes at minimum of <br />two points.Single point calibration <br />is not acceptable. <br />Diffusers and Grilles +/-10%If design is less than 100 CFM, <br />tolerance can be +/-10 CFM <br />Pressurized Rooms -Positive <br />Supply +100-105% <br />Exhaust or Return 100- <br />95% <br />Room offset tolerance to design <br />100%to +110% <br />Pressurized rooms -Negative <br />Supply 95%to 100% <br />Exhaust or Return <br />100%to 105% <br />Room offset tolerance to design <br />100%to 105% <br />B.Water System Tolerances <br />Systems -Water Tolerances of Plan Design Remarks <br />Coils,Heat Exchangers, <br />Pumps,Evaporators, <br />Condensers <br />+/-5% <br />3.06 RECORDING AND ADJUSTING <br />A.Field Logs: Maintain written logs including: <br />1.Running log of events and issues. <br />2.Discrepancies,deficient or uncompleted work by others. <br />3.Contract interpretation requests. <br />4.Lists of completed tests. <br />B.Ensure recorded data represents actual measured or observed conditions. <br />C.Use only those instruments which have the maximum field measuring accuracy and are best <br />suited to the function being measured. <br />D.Apply instrument as recommended by the manufacturer. <br />E.When averaging values,take a sufficient quantity of readings that will result in a repeatability error <br />of less than 5 percent.When measuring a single point,repeat readings until 2 consecutive <br />identical values are obtained. <br />F.Permanently mark settings of valves,dampers,and other adjustment devices allowing settings to <br />be restored. Set and lock memory stops. <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C