Ongoing commissioningThe process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. is a great option for baking continuous improvement for system and energy performance into your building operations. The credit is achieved by essentially repeating the process steps undertaken for retro-commissioning over a cycling two-year period.
To be successful, your ongoing commissioning program needs to go beyond preventive maintenance and system trending. Performance verification of energy efficiency measures implemented under EAc2 is also not sufficient on its own to meet the credit requirements. Instead, the ongoing commissioning work must include device checks, sensor checks, functional testing of equipment, alarm testing, point trending, and metering.
The LEED Reference Guide states that sampling is permitted for substantially similar systems, but the minimum rate should be 10 or 10%, whichever is greater. Additionally, a different sample of units or equipment should be tested every two years when sampling is applied.
To use the existing building commissioningThe process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. process to improve building operations, energy, and resource efficiency.
Meet the requirements of EA Credit Existing Building Commissioning–Analysis and EA Credit Existing Building Commissioning–Implementation.
Establish an ongoing commissioning process that includes planning, point monitoring, system testing, performance verification, corrective action response, ongoing measurement, and documentation to proactively address operating problems in the systems being commissioned.
Develop an on-going commissioning plan that defines the following:
Apply the requirements below to all direct energy-consuming or energy-producing systems, including lighting, process loads, HVAC&R, domestic water heating, and renewable energy.
Continue to update the facility’s operating and maintenance plan and current facilities requirementsThe implementation of the owner's project requirements, developed to confirm the owner's current operational needs and requirements. to reflect actual conditions and issue annual revisions of these documents.
Only activities associated with ongoing commissioning completed within two years of the LEED application may be included to show progress.
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