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Procedural Standard for Retro-Commissioning of Existing Buildings

First Edition – March 2009
Cover_RCx_Cover_2009The purpose of the NEBB Procedural Standards for Retro-Commissioning of Existing Buildings (RCX-EB) is to establish a uniform and systematic set of criteria for the performance of the Retro-Commissioning process when applied to existing building systems such as a building’s mechanical, electrical and building envelop systems.
These standards and procedures are intended as the minimum NEBB requirements that a NEBB Certified RCX-EB Firm shall follow when performing Retro-Commissioning. Contract document requirements or contractual agreements between the Owner and the NEBB Certified RCX-EB Firm may supersede the NEBB requirements. These NEBB RCX-EB procedural standards have been developed using language defined by "SHALL, SHOULD, and MAY" as it relates to the standards and procedures described in this manual. It is important to note these particular words throughout this manual and how they pertain to the NEBB standards and procedures.


The Standards cover definitions, requirements for quality control, quality compliance, instrumentation requirements, and report requirements. Requirements for instruments and test equipment are identified.


The Process section is devoted to providing a detailed explanation of the retro-commissioning process.


The Procedures section covers the technical procedures for retro-commissioning of existing buildings.


The Appendices include the NEBB retro-commissioning process matrix. This First Edition of the RCX-EB Procedural Standards, when used by NEBB Certified RCX-EB Firms, will assure the building owner of a facility that is properly retro-commissioned to improve their facility’s performance, operation and / or comfort.
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