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9. Verify ductwork leakage tests. Data from ductwork leakage tests shall be tabulated and <br /> included with the test and balance report. Duct leakage tests shall be conducted in <br /> accordance with ANSI/ASHRAE/SMACNA Standard 126-2008, Method of Testing HVAC <br /> Air Ducts. <br /> 10. Tested sections of ductwork shall be marked by this Contractor and verified by the test <br /> and balance firm. All tests and repairs shall be made before duct sections are concealed <br /> or insulated. <br /> 11. The test and balance firm shall visually inspect low pressure duct systems and verify <br /> such are constructed and sealed in accordance with SMACNA construction standards, <br /> and as specified. <br /> 12. Systematically survey and inspect the HVAC insulation. As part of its initial report, the <br /> test and balance firm shall note non-compliance with the Contract Documents and/or <br /> good installation practices. <br /> B. Direct Expansion Systems: <br /> 1. Air Distribution: <br /> a. Measure fan speeds, motor voltages, operating currents, CFM and static <br /> pressure at fan outlet. <br /> b. Adjust dampers, air supply and return and exhaust outlets to —5/+10% of design <br /> quantities. Supply grilles shall be adjusted to provide proper throw and uniform <br /> pattern. <br /> C. Measure air flow at duct connected return or exhaust grilles. <br /> d. Record the specified horsepower and all electrical characteristics of all motors. <br /> e. Record the actual installed motors as to horsepower and electrical charac- <br /> teristics. <br /> 2. Verify function and calibration of temperature controls to+/-2.0 degree F. of set point. <br /> 3. Perform the following Cooling Cycle Temperature Measurements: <br /> a. "Entering air"temperature. (D.B. and W.B.) <br /> b. "Leaving air"temperature. (D.B. and W.B.) <br /> C. Outside air temperature. (D.B. and W.B.) <br /> d. Room temperature (D.B. and W.B.) measured near thermostats, four feet above <br /> floor. <br /> e. Air CFM at unit discharge. (D.B. and W.B.) <br /> 4. Perform the following heating cycle measurements: <br /> a. "Entering"and "Leaving"air temperatures. (D.B.) <br /> b. Outside air temperature. (D.B. and W.B.) <br /> C. Room temperature measured near thermostats four feet above floor. <br /> d. Air CFM at unit discharge. (D.B. and W.B.) <br /> C. Temperature Control Systems: <br /> 1. The temperature controls installer shall cooperate fully with the test and balance firm to <br /> ensure maximum effective systems operation. The controls installer shall initially set, <br /> adjust, relocate (if necessary), calibrate and test all controls. The test and balance firm <br /> shall verify proper operation of controls and set controls to proper settings. <br /> 2. The Temperature Control Contractor shall: <br /> a. Verify that all control components are installed in accordance with project <br /> requirements and are functional, including electrical interlocks, damper <br /> sequences, air and water reset, and freeze stats. Controls installer shall provide <br /> systems printouts to all points to ensure operation and communications with all <br /> terminal points. <br /> b. Verify that all controlling instruments are calibrated and set for design operating <br /> conditions. <br /> C. Calibrate room thermostats and/or sensors after installation and before the <br /> thermostat control verification tests are performed. The balancing agency shall <br /> CEA#18010 TESTING,ADJUSTING AND BALANCING 23 05 93-6 <br /> COPYRIGHT©2018 CONSULTING ENGINEERING ASSOCIATES, INC. <br />