Leveraging Continuous Data Validation and Real-Time Insights with BalanceCx to Optimize HVAC Commissioning

Project Overview:

The Wexner Medical Center at Ohio State University is a new, state-of-the-art 1.9 million square foot hospital. EEI was commissioned as the primary commissioning agent (CxA) for the HVAC systems, which include a central plant, 48 Air Handling Units (AHUs), and over 2,500 Variable Air Volume (VAV) terminal units. Ensuring proper setpoint configuration and equipment performance across such a large and complex system posed a significant challenge.

Traditional Challenges in Commissioning:

• Point-in-Time Verification: Conventional commissioning practices often rely on snapshot checks. These checks confirm performance only at a single moment, creating blind spots. If setpoints or sequences are changed or drift over time, these deviations might go undetected.
• Data Overload: The sheer number of terminal units—each with 7 to 8 setpoints—translates to over 25,000 potential setpoints to verify. Manually validating each setpoint is labor-intensive and prone to human error.
• Limited Ongoing Validation: Without continuous monitoring, changes introduced after initial commissioning often remain undetected, potentially compromising energy efficiency and occupant comfort.

BalanceCx Implementation and Solutions:

To address these challenges, EEI deployed BalanceCx, a cloud-based analytics platform, during construction and commissioning. The solution included placing small data collection devices onsite to gather and stream HVAC data into BalanceCx as equipment came online.

Setpoint Validation:

• Automated Verification: After importing the design setpoints and acceptance criteria into BalanceCx, the system automatically compared live BACnet values against the design intent.
• Rapid Identification of Deviations: Instead of spending weeks manually checking terminal unit setpoints, the commissioning team generated instant pass/fail reports. These reports highlighted which setpoints were incorrect and identified the correct design values.
• Ongoing Monitoring: BalanceCx continually monitored setpoints. Any subsequent changes or drift from the design intent were promptly detected and flagged, ensuring that no improper adjustments remained unnoticed.

Sequence of Operations Validation:

• Scalable Performance Checks: With thousands of mechanical units, validating proper operation of each asset (e.g., VAV boxes, unit heaters) was streamlined. BalanceCx’s customizable dashboards and trending tools (charts, heat maps, one-line diagrams) provided real-time insights into whether each piece of equipment met the specified sequence of operations.
• Easy Exception Reporting: The system’s readiness dashboard allowed Cx Agents to sort and filter equipment by performance criteria, quickly isolating underperforming units. For example, the software would confirm that a VAV box’s airflow matched its setpoint, room temperatures met their targets, and hot water valves responded appropriately.
• Continuous Functional Assurance: Rather than relying solely on functional tests conducted at a single point in time, BalanceCx supported continuous verification, ensuring equipment remained in compliance throughout the commissioning phase.

Integration and Issue Resolution:

• Seamless Reporting to CxAlloy: Using the BalanceCx-to-CxAlloy API integration, all identified issues and deviations were automatically transferred into Field Observation Reports within CxAlloy.
• Efficient Issue Tracking: The project team used CxAlloy to document, assign, and resolve issues. This closed-loop feedback system ensured a transparent and efficient path to rectifying problems.

Results and Benefits:

• Enhanced Commissioning Quality: By leveraging BalanceCx analytics, EEI’s Cx Agents identified more issues earlier and with greater accuracy, leading to a higher-quality delivered building.
• Significant Labor Savings: Automated setpoint and sequence validation saved weeks of manual labor and drastically reduced the potential for human error.
• Continuous Assurance: The system’s ongoing monitoring capability ensured that performance criteria remained consistent, even after the initial commissioning activities concluded.

By implementing BalanceCx analytics at the Wexner Medical Center, EEI delivered a more thorough, accurate, and efficient commissioning process. As a result, Ohio State University received a better-performing building, improved operational reliability, and enhanced occupant comfort—all achieved through continuous oversight, automated verification, and seamless integration with existing project management tools.