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Round 1 Bowling and Amusement 12/09/2024 Paradigm Design <br />Main Place Mall Expansion Grand Rapids, MI <br />Santa Ana, California <br />Project #2309147GR <br />B.Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the <br />minimum extent necessary for TAB procedures. <br />1.After testing and balancing, patch probe holes in ducts with same material and thickness <br />as used to construct ducts. <br />2.Install and join new insulation that matches removed materials. Restore insulation, <br />coverings, vapor barrier, and finish according to Division 23 Section "HVAC Insulation." <br />C.Mark equipment and balancing devices, including damper-control positions, valve position <br />indicators, fan-speed-control levers, and similar controls and devices, with paint or other <br />suitable, permanent identification material to show final settings. <br />D.Take and report testing and balancing measurements in inch-pound IP units. <br />3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS <br />A.Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and <br />recommended testing procedures. Crosscheck the summation of required outlet volumes with <br />required fan volumes. <br />B.Prepare schematic diagrams of systems' "as-built" duct layouts. <br />C.For variable-air-volume systems, develop a plan to simulate diversity. <br />D.Determine the best locations in main and branch ducts for accurate duct-airflow and pressure <br />measurements. <br />E.Check airflow patterns from the outdoor-air louvers and dampers and the return- and exhaust-air <br />dampers through the supply-fan discharge and mixing dampers. <br />F.Locate start-stop and disconnect switches, electrical interlocks, and motor starters. <br />G.Verify that motor starters are equipped with properly sized thermal protection. <br />H.Check dampers for proper position to achieve desired airflow path. <br />I.Check for airflow blockages. <br />J.Check condensate drains for proper connections and functioning. <br />K.Check for proper sealing of air-handling-unit components. <br />L.Verify that air duct system is sealed as specified in Division 23 Section "Metal Ducts." <br />3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS <br />A.Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by <br />fan manufacturer.