Practice Test Geeks(CCP) Certified Commissioning Professional Practice Test
← All CCP Flashcard Decks

Existing-Building Retro-Cx Flashcards

7 cards from real CCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Existing-Building Retro-Cx flashcards as text

  1. Which ASHRAE Guideline specifically provides the procedures for the retro-commissioning process?

    Answer: ASHRAE Guideline 0.2

    ASHRAE Guideline 0.2 is the commissioning process guideline specifically written for existing buildings, including retro-commissioning and ongoing commissioning.

  2. During RCx, you find that the building's DDC system is using an outdoor air temperature sensor that reads 8°F higher than actual. The most immediate operational impact is:

    Answer: Premature economizer lockout, causing missed free-cooling opportunities

    A sensor reading 8°F high causes the BAS to falsely believe outdoor conditions are warmer than they are, locking out the economizer earlier than necessary and wasting free-cooling energy.

  3. Measurement and verification (M&V) after retro-commissioning is performed to:

    Answer: Confirm that implemented measures are delivering projected energy savings

    M&V uses metered data and the IPMVP methodology to confirm that energy savings from implemented RCx measures are being realized in practice.

  4. An RCx investigation reveals that a building's domestic hot water recirculation pump runs continuously at full speed. The best low-cost measure is to:

    Answer: Install a pump scheduling control tied to occupancy hours

    Scheduling the recirculation pump to operate only during occupied hours is a no-cost or low-cost control change that can cut pump energy use by 50–70%.

  5. Which of the following best describes 'ongoing commissioning' as distinguished from retro-commissioning?

    Answer: A continuous process using automated fault detection to maintain optimized building performance over time

    Ongoing commissioning (also called monitoring-based commissioning) uses continuous data analysis and fault detection to keep systems performing optimally between periodic RCx projects.

  6. A cooling tower is found to operate at a fixed fan speed regardless of load or wet-bulb temperature. The RCx measure most likely to yield savings is:

    Answer: Implementing variable-speed fan control based on leaving condenser water temperature setpoint

    Variable-speed cooling tower fan control tracks condenser water temperature setpoint and reduces fan energy significantly during mild weather when full fan speed is unnecessary.

  7. When reviewing utility bills as part of the RCx planning phase, a retro-commissioning provider is primarily looking for:

    Answer: Consumption patterns, demand peaks, and anomalies that indicate operational problems

    Utility bill analysis reveals seasonal patterns, unexpected demand spikes, and EUI trends that direct the RCx investigation toward the highest-impact systems.