ESCO ESCO Commissioning and Retro-Commissioning 1

Question 1

What is the primary goal of retro-commissioning (RCx) as an ESCO measure?

Accepted Answer

To restore existing building systems to their original design intent and identify operational improvements without capital replacement

Answer

RCx investigates and corrects control sequences, setpoints, and maintenance deficiencies so existing equipment performs as originally intended.

Question 2

Which document produced during the commissioning process formally records all discovered deficiencies and their resolution status?

Accepted Answer

Issues Log (Deficiency Log)

Answer

The Issues Log tracks each deficiency found during testing, assigns responsibility, and records when each issue is corrected and verified.

Question 3

In ASHRAE Guideline 0, what is the 'Owner's Project Requirements' (OPR) document?

Accepted Answer

A written statement of the owner's functional requirements, performance expectations, and quality standards for the project

Answer

The OPR defines what the owner expects the building to do, providing the benchmark against which commissioning verifies actual performance.

Question 4

Which building system is most commonly targeted first in an ESCO retro-commissioning scope because it offers the fastest payback?

Accepted Answer

HVAC controls and scheduling

Answer

Correcting HVAC control sequences, scheduling errors, and setpoint issues typically costs little but yields immediate energy reductions.

Question 5

What is 'functional performance testing' (FPT) in the commissioning process?

Accepted Answer

Dynamic testing of equipment and systems to verify they operate correctly through all modes and sequences under varying conditions

Answer

FPT exercises each system through its full range of operating modes to confirm controls, interlocks, and sequences work as designed.

ESCO - Energy Service Company Practice Test