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KAISER PERMANENTE Site Prep #1 Electrical Service <br />ASC & Clinic (HUB) March 18, 2020 <br />Everett, WA Project No. 19.05002.00 <br />3.5 FUNDAMENTAL AIR SYSTEMS' BALANCING PROCEDURES <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 <br />with 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 <br />measurements. <br />E. Check the airflow patterns from the outside -air louvers and dampers and the return- and <br />exhaust -air 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 />3.6 TOLERANCES <br />A. Set HVAC system airflow and water flow rates within the following tolerances: <br />1. Exhaust Fans: Zero to plus 10 percent of fan design air volume, including <br />leakage. <br />2. Air Outlets and Inlets: <br />a. Non -Critical Spaces: Minus 10 percent to plus 10 percent. <br />3.7 REPORTING <br />A. Initial Construction -Phase Report: Based on examination of the Contract Documents as <br />specified in "Examination" Article above, prepare a report on the adequacy of design for <br />systems' balancing devices. Recommend changes and additions to systems' balancing <br />devices to facilitate proper performance measuring and balancing. Recommend changes <br />and additions to HVAC systems and general construction to allow access for <br />performance measuring and balancing devices. <br />B. Status Reports: As Work progresses, prepare reports to describe completed procedures, <br />procedures in progress, and scheduled procedures. Include a list of deficiencies and <br />problems found in systems being tested and balanced. Prepare a separate report for <br />each system and each building floor for systems serving multiple floors. <br />3.8 FINAL REPORT <br />A. General: Typewritten, or computer printout in letter -quality font, on standard bond paper, <br />in 3-ring binder, tabulated and divided into sections by tested and balanced systems. <br />B. Include a certification sheet in front of binder signed and sealed by the certified testing <br />and balancing engineer. <br />1. Include a list of the instruments used for procedures, along with proof of <br />calibration. <br />TESTING, ADJUSTING, AND BALANCING FOR MECHANICAL 23 05 93 - 6 <br />