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10 Functional Performance Tests

Why: Purpose

The functional/ performance tests verify the equipment, systems, and sub-systems function and perform to meet the owner's project requirements.  They are a means to determine that different systems interact as required to achieve an overall operating and functioning facility. 

What: Included Information

The tests document that the functionality and performance of the systems comply with the owner's project requirements.  Typically, the test includes a series of step-by-step procedures with each line including a task such as change setpoint, an expected reaction, a pass/ fail indicator, and a place for initialling. 
The individual steps should lead the tester and commissioning agent through a complete excercise of all the system's functions and demonstration of the performance.   Careful planning and sequencing of the steps can minimize the time and duplication of effort when checking various modes of operation.

When: Project Phase/ Task Timing

Functional/ Performance testing is one of the last activities in the process.  Prior to testing, the equipment and systems must be inspected for correct installation, started-up to verify general operation, adjusted and balanced, and then as a system verified complete. 
Functional/ Performance testing should not start until all the previous activities are complete and all open issues are resolved for the system to be tested.  Any changes to the system following testing including balancing valve adjustments, can invailidate testing and require retesting. 

How: Development Sources

The step-by-step tests are compiled and written by the commissioning agent using the following sources of information as a basis:
  1. Owner Project Requirements
    1. Performance Criteria
      1. Chilled Water System kW/ Ton
      2. Chilled Water System Delta-T
      3. System Reaction Times
    2. Functional Requirements
      1. Maintain Environmental Conditions
        1. Temperature
        2. Humidity
        3. Air Distribution Efficiency
      2. Alarms
  2. Control System Design
    1. Control Diagrams
    2. Points List
    3. Sequence of Operations
      1. Text Based Description
      2. Flowcharts
      3. Code
  3. Manufacturer Data
    1. Recommended Testing Procedures
    2. Equipment Performance Data
      1. Pump Curves, Chiller Efficiency Curves, etc
  4. Design Drawings
    1. System Schematics/ Diagrams
      1. Piping Diagrams
      2. Air Flow Diagrams
      3. Electrical One-line Diagrams
    2. Equipment Schedules
      1. Capacities
      2. Performance Requirements

 Who: Team Members Involved

  1. Commissioning agent
  2. Controls technician
  3. Applicable Sub-contractor (mechanical, electrical, etc)
  4. Owner representative (if desired)