LEED Commissioning Plan Guide

Understanding the LEED Commissioning Plan

The LEED Commissioning Plan is a critical document that outlines the process for ensuring that building systems operate as intended, contributing to energy efficiency and sustainability. For LEED v5, this plan must cover the core and shell scope of work, including systems like HVAC, lighting, and plumbing. It involves detailed reviews, testing, and ongoing maintenance to ensure compliance with ASHRAE standards and LEED requirements.

Scope of Work for Commissioning

The scope of work for LEED v5 commissioning varies based on the project's energy and water systems. Projects may include base building systems like air-source heat pumps and central air handling units, or they might offer a 'cold shell' with limited HVAC and lighting. Regardless of the scope, the Commissioning Provider (CxP) must verify and test these systems to ensure they meet design specifications and operational requirements.

Design Reviews and Testing

During the design phase, the CxP must participate in at least one coordination meeting to discuss design review comments. This includes reviewing a minimum of 25% of installer checklists to ensure quality control. For final commissioning, the CxP must conduct tests and defer any that cannot be completed until tenant equipment is installed, such as testing a central VAV air handling unit with controls after tenant VAV terminal equipment installation.

Documentation and Compliance

To comply with LEED v5, documentation must include confirmation of compliance with ANSI/ASHRAE/IES Standard 90.1, the Commissioning Plan, sample Functional Performance Tests (FPT) scripts, and the Owner's Project Requirements (OPR) and Basis of Design (BOD). The qualifications of the CxP and Verification and Testing (V&T) providers must also be documented.

Training and Ongoing Commissioning

Facility staff training is essential, with the CxP reviewing training materials to ensure they meet the training plan and address the OPR and BOD. An ongoing commissioning plan is necessary to maintain operational efficiency, providing facility managers with procedures, blank FPTs, and a schedule for ongoing activities. This plan should reflect the most current information for the building, including changes due to retrofits or equipment replacements.

Special Considerations for Building Enclosure

If the project scope includes significant alterations to the building envelope, such as more than 25% of the total envelope area or over 5,000 square feet, the commissioning plan must include field testing for water penetration and infrared imaging. Water penetration testing uses ASTM 1105 or AAMA 501 for fenestration and exterior doors, while infrared imaging uses ASTM C1060 for framed members or ASTM C1153 for roofs with insulation above deck.

Monitoring-Based Commissioning (MBCx)

MBCx allows building operators to identify operational issues in real-time, supporting the project's performance goals. It requires an Energy Information System (EIS) that visualizes, analyzes, and reports monthly energy data and additional metered data, adhering to EAp4: Energy Metering and Reporting. This system must support the project for at least three years.

How ISG Can Help

At ISG, we specialize in developing comprehensive LEED commissioning plans that meet and exceed LEED v5 requirements. Our team of experts can guide you through the entire process, from initial design reviews to ongoing maintenance, ensuring your project achieves optimal energy efficiency and sustainability.