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AIR & WATER SYSTEM BALANCING <br />AND ACCOUSTICAL TESTING <br />Section 15990 <br />15-1207 <br />control systems contractor may set damper motors accordingly. <br />F. After final air and hydronic balance of systems, make adjustments to obtain uniform <br />temperatures as required by actual occupancy. <br />G. Take static pressure readings with inclined manometer. Take air velocity readings with <br />instruments of recent calibration. Take final velocity readings with Alnor Velometer, <br />Anemotherm or Vane Type Anemometer, calibrated prior to test and recalibrated at end of <br />test. Include certified correction curves for each calibration as part of record. Certify <br />instruments accurate to standards currently used in common practice for system balance <br />work. Use test cones for diffusers. <br />H. Run tests with supply, return, and exhaust systems operating and doors, windows, etc. <br />closed or under regular traffic. If possible, make final readings with cooling coils under load <br />to ensure that static pressures are at maximum. <br />Adjust deflection of supply outlets to ensure proper and uniform air distribution throughout <br />area served by such outlets. <br />J. Work with temperature Control Subcontractor in adjustment of automatic dampers, valves, <br />thermostats, etc. required to maintain proper temperatures in all portions of building. <br />K. Contractor responsible for installing heating, cooling, and ventilating equipment shall make <br />any changes, additions, or modifications to dampers, fan drives and motor sheaves, pump <br />impellers, motors, and other equipment necessary for proper air and hydronic balance. <br />L. Balance of systems shall be reviewed by Architect and during this review Mechanical <br />Contractor shall furnish men, materials, ladders, etc. to enable Architect to take all readings <br />as he may direct. If errors are found, Balancing Agency shall readjust system to satisfaction <br />of Architect. <br />END OF SECTION <br />5 <br />