NEBB Building Systems Commissioning Certified Professional key terms

A quality-focused process for verifying that building systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements.

The qualified person or firm leading and documenting the commissioning process, independent of the design and construction contractors, who reviews design, coordinates testing, and reports findings to the owner.

A written document capturing the owner's functional needs, performance criteria, and expectations for the building, forming the benchmark against which commissioned systems are evaluated.

A record describing the design assumptions, calculations, codes, and system selections used by the design team, showing how the design responds to the owner's project requirements.

The document defining scope, roles, schedule, documentation, and test procedures for the commissioning process, guiding how each system will be verified from design through acceptance.

A commissioning-phase activity in which the CxA examines design documents for clarity, maintainability, testability, and consistency with the owner's project requirements before construction begins.

A structured verification list used during construction to confirm that equipment is installed, wired, labeled, and accessible before any performance testing starts.

A documented test that operates a system under normal, part-load, and failure conditions to demonstrate it performs according to the design intent and the owner's project requirements.

A written step-by-step script specifying prerequisites, actions, measurement points, expected results, and acceptance criteria for a commissioning test.

The measurable limits or conditions a system must satisfy to pass a test, such as airflow tolerance, temperature control band, or response time, defined before testing begins.

Confirmation that equipment and components are installed per manufacturer instructions, contract documents, and approved submittals, typically recorded in pre-functional checklists before testing.

The commissioning team's check of contractor product data and shop drawings for consistency with the basis of design, especially regarding performance, controls, and maintainability requirements.

A running register of problems, deficiencies, and open questions found during commissioning, tracking responsible party, status, and resolution date until each item is closed.

A condition where installed work or system performance fails to meet contract documents, design intent, or owner requirements, requiring correction and retesting before acceptance.

Repeat performance testing performed after a deficiency has been corrected, to confirm the system now satisfies the acceptance criteria documented in the original test procedure.

Deferred performance verification conducted when weather conditions allow testing of heating, cooling, or other modes that cannot be exercised during initial acceptance testing.

A verification that each sensor, actuator, and controller input or output is wired to the correct terminal and responds correctly, confirming the control system's physical and logical mapping.

The written description of how a system's controls are intended to respond to conditions, setpoints, schedules, and failures, used as the basis for functional testing.

Recorded time-series data from a building automation system showing values such as temperature, pressure, valve position, or status over time, used to evaluate control performance.

A consolidated reference for building operators containing design intent, equipment data, control sequences, maintenance requirements, and commissioning records for installed systems.

Confirmation that the owner's operating staff received adequate instruction on equipment and controls, with attendance, content, and competency documented before handover.

As-built drawings, submittals, test reports, and other project records updated to reflect actual installed conditions, retained for operations and future commissioning activities.

The final deliverable summarizing commissioning scope, tests performed, results, unresolved issues, and recommendations, documenting that the process was completed as planned.

The project milestone when work is sufficiently complete for the owner to use the building for its intended purpose, often triggering final testing and commissioning documentation deadlines.

A commissioning process applied to existing buildings not previously commissioned, aimed at identifying low-cost operational improvements and restoring performance to current requirements.

A systematic investigation of an operating building's systems to document current performance, identify inefficiencies, and implement corrective measures, often including retrocommissioning and ongoing activities.

Ongoing commissioning supported by continuous data trending and analytics, using meter and building automation data to detect faults and sustain performance over time.

A comprehensive approach that commissions all interrelated systems and assemblies, including envelope, structure, and interiors, rather than only mechanical and electrical systems.

Verification that the building enclosure, including walls, roofs, windows, and air barriers, meets performance requirements for water, air, thermal, and vapor control.

The designer's documented explanation of how and why systems were selected and configured, used by the commissioning team to judge whether observed performance matches expectations.

A single organized document set giving operations staff the information needed to understand, operate, and maintain commissioned systems, including design intent and test results.

The measurement and adjustment of airflow in ducts and at terminals so each zone receives design quantities within specified tolerances, verified during functional testing.

The contractor activity of measuring and adjusting air and water flows to design values, producing a certified report that commissioning uses as a baseline for performance testing.

A test exercising multiple systems together, such as fire alarm, smoke control, and HVAC, to confirm coordinated responses under normal and emergency scenarios.

A late commissioning activity near the end of the warranty period that checks whether systems still perform as accepted and addresses unresolved or recurring problems.

A post-project review capturing what worked and what did not during commissioning, used to improve future project requirements, design, construction, and commissioning practices.