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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 <br />SECTION 238000 - TEST AND BALANCE <br />E. Check free travel and proper operation of control devices such as damper and valve operators. <br />F. Check the sequence of operation of control devices. Note air pressures and device positions and <br />correlate with airflow and water flow measurements. Note the speed of response to input changes. <br />G. Check the interaction of electrically operated switch transducers. <br />H. Check the interaction of interlock and lockout systems. <br />I. Check main control supply -air pressure and observe compressor and dryer operations. <br />J. Record voltages of power supply and controller output. Determine whether the system operates on a <br />grounded or nongrounded power supply. <br />K. Note operation of electric actuators using spring return for proper fail -safe operations. <br />3.19 TOLERANCES <br />A. Set HVAC system airflow and water flow rates within the following tolerances: <br />1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus 5 to plus 10 percent. <br />2. Air Outlets and Inlets: 0 to minus 10 percent. <br />3. Heating -Water Flow Rate: 0 to minus 10 percent. <br />4. Cooling -Water Flow Rate: 0 to minus 5 percent. <br />3.20 FINAL REPORT <br />A. General: Typewritten, or computer printout in letter - quality font, on standard bond paper, in three - <br />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 and balancing <br />engineer. <br />1. Include a list of instruments used for procedures, along with proof of calibration. <br />C. Final Report Contents: In addition to certified field report data, include the following: <br />1. Pump curves. <br />2. Fan curves. <br />3. Manufacturers' test data. <br />4. Field test reports prepared by system and equipment installers. <br />5. Other information relative to equipment performance, but do not include Shop Drawings and <br />Product Data. <br />D. General Report Data: In addition to form titles and entries, include the following data in the final <br />report, as applicable: <br />1. Title page. <br />2. Name and address of TAB firm. <br />3. Project name. <br />4. Project location. <br />5. Architect's name and address. <br />6. Engineer's name and address. <br />7. Contractor's name and address. <br />8. Report date. <br />9. Signature of TAB firm who certifies the report. <br />10. Table of Contents with the total number of pages defined for each section of the report. <br />Number each page in the report. <br />11. Summary of contents including the following: <br />a. Indicated versus final performance. <br />b. Notable characteristics of systems. <br />C. Description of system operation sequence if it varies from the Contract Documents. <br />12. Nomenclature sheets for each item of equipment. <br />13. Data for terminal units, including manufacturer, type size, and fittings. <br />14. Notes to explain why certain final data in the body of reports varies from indicated values. <br />15. Test conditions for fans and pump performance forms including the following: <br />a. Settings for outside -, return -, and exhaust -air dampers. <br />b. Conditions of filters. <br />C. Cooling coil, wet- and dry-bulb conditions. <br />d. Face and bypass damper settings at coils. <br />e. Fan drive settings including settings and percentage of maximum pitch diameter. <br />f. Inlet vane settings for variable- air - volume systems. <br />g. Settings for supply -air, static - pressure controller. <br />h. Other system operating conditions that affect performance. <br />E. System Diagrams: Include a copy of the design drawings, marked to note as- built /as- installed <br />conditions, indicating the following: <br />1. Quantities of outside, supply, return, and exhaust airflows. <br />2. Water and steam flow rates. <br />3. Duct, outlet, and inlet sizes. <br />4. Pipe and valve sizes and locations. <br />5. Terminal units. <br />6. Balancing stations. <br />7. Location and position of balancing devices. <br />Reece, Noland & McElrath, Inc. 238000-8 Orange County Board of Elections <br />Orange Co., NC 05/04/18 <br />