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professional shall provide a written statement of system completion in <br />accordance with Section 503.2.9.1 through Section 503.2.9.2. <br />503.2.9.1 System commissioning. Commissioning is a process that <br />verifies and documents that the selected building systems have been <br />designed, installed, and function according to the owner's project <br />requirements and construction documents. Drawing notes shall require <br />commissioning and completion requirements in accordance with Section <br />503.2.9. Drawing notes may refer to specifications for further <br />requirements. Copies of all documentation shall be given to the owner. <br />503.2.9.1.1 Commissioning plan. A commissioning plan shall include as a <br />minimum the following items: <br />1. A detailed explanation of the original owner's project <br />requirements. <br />2. A narrative describing the activities that will be <br />accomplished during each phase of commissioning, <br />including guidance on who accomplishes the activities and <br />how they are completed. <br />3. Equipment and systems to be tested, including the extent of <br />tests. <br />4. Functions to be tested (for example calibration, economizer <br />control, etc.). <br />5. Conditions under which the test shall be performed (for <br />example winter and summer design conditions, full outside <br />air, etc.) <br />6. Measurable criteria for acceptable performance. <br />503.2.9.2 Systems adjusting and balancing. All HVAC systems shall be <br />balanced in accordance with generally accepted engineering standards. Air <br />and water flow rates shall be measured and adjusted to deliver final flow <br />rates within 10 percent of design rates. Test and balance activities shall <br />include as a minimum the following items: <br />1. Air systems balancing: Each supply air outlet and zone <br />terminal device shall be equipped with means for air <br />balancing in accordance with the requirements of Chapter 6 <br />of the International Mechanical Code. Discharge dampers <br />are prohibited on constant volume fans and variable volume <br />fans with motors 10 hp (18.6 kW) and larger. Air systems <br />shall be balanced in a manner to first minimize throttling <br />losses then, for fans with system power of greater than 1 <br />hp, fan speed shall be adjusted to meet design flow <br />conditions. <br />Exception: Fans with fan motors of 1 hp or less. <br />11 <br />