Retrocommisiioning NEBB Standard

PROCEDURAL STANDARDS FOR RETRO-COMMISSIONING OF EXISTING BUILDINGS

2009 FIRST EDITION

National Environmental Balancing Bureau

8575 Grovemont Circle Gaithersburg, Maryland 20877-4121 301-977-3698 301-977-9589 FAX

www.nebb.org

PROCEDURAL STANDARDS FOR RETRO-COMMISSIONING OF EXISTING BUILDINGS

First Edition March 2009 Copyright NEBB, 2009

This book may not be reproduced in any form without written permission of the copyright owner. These Procedural Standards were developed using reliable engineering principles and research plus consultation with, and information obtained from, manufacturers, users, testing laboratories and others having specialized experience. They are subject to revision as further experience and investigation may show it necessary or desirable to do so. Existing building systems commissioning completed to these standards may not be applicable if the system being commissioned contains features or components that impair the results of these standards. The National Environmental Balancing Bureau assumes no responsibility and has no liability for the application of the principles or techniques contained in these Procedural Standards. Authorities considering adoption of these Procedural Standards should review all Federal, State, local and contract regulations applicable to the specific installation.

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FOREWORD The purpose of the NEBB Procedural Standards for Retro-Commissioning of Existing Buildings is to establish a uniform and systematic set of criteria for the performance of the Retro-Commissioning (RCX-EB) process when applied to existing building systems such as a buildings 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. Part 1 STANDARDS The Standards cover definitions, requirements for quality control, quality compliance, instrumentation requirements, and report requirements. Requirements for instruments and test equipment are identified. Part 2 PROCESS The Process section is devoted to providing a detailed explanation of the retro-commissioning process. Part 3 PROCEDURES The Procedures section covers the technical procedures for retro-commissioning of existing buildings. APPENDICES 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 facilitys performance, operation and / or comfort. Andrew P. Nolfo, P.E. NEBB Technical Director

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BUILDINGS SYSTEMS COMMISSIONING COMMITTEE MEMBERS

AND OTHER CONTRIBUTORS FOR THIS EDITION Current BSC Committee: James W. Bochat, Chairman Phoenix, Arizona Gerald T. Bauers, P.E. Kansas City, MO Steve Wiggins Atlanta, Georgia Barry Fitzgerald Boise, Idaho Robert J. Linder, P.E. St. Paul, MN Michael Locke Dallas, Texas James Whorton, PE Kansas City, MO Andrew P. Nolfo, P.E Phoenix, Arizona Additional Contributors: Michael P. Dolim Gaithersburg, Maryland David McFarlane Grand Forks, North Dakota

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TABLE OF CONTENTS PAGE Foreword III NEBB Building Systems Commissioning Committee IV Table of Contents V PART 1 STANDARDS SECTION 1 Definitions 1 SECTION 2 NEBB Program, Quality Control and Compliance 2.1 NEBB Programs 9

2.1.1 NEBB Disciplines 9 2.1.2 Certification of Firms 9 2.1.3 Certification of Professionals 9

2.1.4 Recertification Requirements 10 2.2 Quality Assurance Program Conformance Certification 10 2.2.1 Program Advantages 10 2.2.2 NEBB Quality Assurance Program Certificate 10 2.3 Quality Control and Compliance 10 2.3.1 RCx-EB Work Compliance 10

2.4 RCx-EB Certified Professional Responsibilities 11 2.4.1 Execution of RCx-EB Procedures 11 2.4.2 Instrument and Equipment Use and Maintenance 12

2.4.3 Coordination / Supervision 12 2.4.4 Project Communication 12 2.4.5 Work Completion 12

2.4.6 Compilation and Submission of Final RCx Reports 12 SECTION 3 Responsibilities

3.1 Introduction 13 3.2 Owner Responsibilities 13

3.2.1 Owner Responsibilities 13 3.3 NEBB Certified RCx-EB Firm Responsibilities 13 3.3.1 NEBB Certified RCx-EB Firm Responsibilities 13 3.3.2 NEBB Certified TAB Firm Responsibilities 14 3.4 Other Retro-Commissioning Team Member Responsibilities 14 3.4.1 Design Professionals Responsibilities 14 3.4.2 Contractor or Vendor Responsibilities 14

SECTION 4 Standards for Instrumentation and Calibration 4.1 Minimum Instrumentation 15 4.2 Range and Accuracy 15

Table 4-1 NEBB Instrumentation Requirements (US Units) 16 Table 4-1 NEBB Instrumentation Requirements (SI Units) 18

NEBB RCX-EB PROCEDURAL STANDARDS TABLE OF CONTENTS

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PAGE SECTION 5 Standards for Reports and Forms

5.1 Retro-Commissioning Reports 21 5.2 Required Pages 21 5.2.1 Report Title Page 21 5.2.2 Report Certification Page 22 5.2.3 Table of Contents Page 22 5.2.4 Executive Summary 22 5.2.5 Project CFR 23 5.2.6 Retro-Commissioning Plan 23

5.2.7 Data Logs 23 5.2.8 Interview Records 24 5.2.9 Testing Check Sheets 24 5.2.10 Utility Usage Evaluation 24 5.2.11 Quick Fix Report 24 5.2.12 Corrective Action Recommendation Report 24 5.2.13 Commissioning Report of Corrective Actions 25 5.2.14 TAB Report 25 5.2.15 Commissioning Communications 25 5.2.16 Test Instrument Page 25 5.2.17 All Report Pages 26

PART 2 - PROCESS PAGE SECTION 6 Retro-Commissioning Process 6.1 Introduction 27 6.2 Retro-Commissioning Phases 27 6.3 Contract Phase 28 6.3.1 Introduction 28 6.3.2 Responsibilities 28

6.3.3 Activities 29 6.3.4 Contract Phase Documentation 30

6.4 Pre Site Investigation Phase 30 6.4.1 Introduction 30 6.4.2 Responsibilities 30

6.4.3 Activities 30 6.4.4 Pre Site Investigation Phase Documentation 33

6.5 Site Investigation Phase 33 6.5.1 Introduction 33 6.5.2 Responsibilities 33

6.5.3 Activities 34 6.5.4 Site Investigation Phase Documentation 35

6.6 Analysis Phase 36 6.6.1 Introduction 36 6.6.2 Responsibilities 36

6.6.3 Activities 36 6.6.4 Analysis Phase Documentation 37

NEBB RCX-EB PROCEDURAL STANDARDS TABLE OF CONTENTS

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PAGE 6.7 Corrective Action Phase 37

6.7.1 Introduction 37 6.7.2 Responsibilities 37

6.7.3 Activities 38 6.7.4 Corrective Action Phase Documentation 39

6.8 Follow-Up Phase 39 6.8.1 Introduction 39 6.8.2 Responsibilities 39

6.8.3 Activities 39 6.8.4 Follow Up Phase Documentation 40

6.9 Retro Commissioning Report 40

PART 3 - PROCEDURES SECTION 7 Retro-Commissioning of Existing Buildings

7.1 Introduction 41 7.2 Site Investigation Phase 42 7.2.1 Introduction 42 7.2.2 Responsibilities 42 7.2.3 Site Investigation Activities 42 7.2.4 Site Investigation Phase Documentation 52

7.3 Analysis Phase 52 7.3.1 Introduction 52 7.3.2 Responsibilities 52 7.3.3 Activities 52 7.3.4 Analysis Phase Documentation 56 Table 7-1 NEBB Requirements for RCx-EB 57

APPENDICES APPENDIX A RCx-EB Process Matrices A.1

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PART 1 - STANDARDS SECTION 1 DEFINITIONS These procedural standards have been developed using language defined by Shall, Should, and May" as it relates to the standards and procedures described in this publication. It is important to note these particular words throughout this publication and how they pertain to NEBB standards and procedures. These procedural standards have been developed utilizing ASHRAE Guideline 0 as the standard for the basic commissioning process for new buildings to ensure industry continuity but offer expanded procedures that provide a higher technical effort. Many definitions below are similar to ASHRAE definitions but in some cases include expanded technical clarifications. Acceptance Phase Commissioning: Commissioning tasks executed after the construction has been completed, all Site Observations and Static Tests have been completed and all Pre-Functional Testing has been completed and accepted. The main commissioning activities performed during this phase are verification that the installed systems are functional as verified by conducting Functional Performance tests and Owner Training. Accuracy: The capability of an instrument to indicate the true value of a measured quantity. AHJ: The local governing Authority Having Jurisdiction over the installation.

ASHRAE: The American Society of Heating Refrigeration and Air-Conditioning Engineers.

Basis of Design (BOD): The Engineers Basis of Design is comprised of two components: the Design Criteria and the Design Narrative, these documents record the concepts, calculations, decisions, and product selections used to meet the Owners Project Requirements (OPR) and to satisfy applicable regulatory requirements, standards, and guidelines. Building Systems Commissioning (BSC): NEBB acronym used to designate its commissioning program. Calibrate: The act of comparing an instrument of unknown accuracy with a standard of known accuracy to detect, correlate, report, or eliminate by adjustment any variation in the accuracy of the tested instrument. Checklists: Lists of data or inspections that should be verified to ensure proper system or component installation, operation and function. Verification checklists are developed and used during all phases of the commissioning process to verify that the Owners Project Requirements (OPR) is being achieved.

NEBB RCX-EB PROCEDURAL STANDARDS SECTION 1 DEFINITIONS

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Commissionability: Defines a design component or construction process that has the necessary elements that will allow a system or component to be effectively measured, tested, operated and commissioned. Commissioning (Cx): See Commissioning Process Commissioning Authority (CA): The NEBB Certified BSC Professional who administers the Cx process by managing the Cx team. Where CA is used in the standard it means the CA, members of his staff or appointed members of the commissioning team. Commissioning Plan: A document that outlines the scope and defines responsibilities, processes, schedules, and the documentation requirements of the Commissioning Process. Commissioning Process: A quality focused process for enhancing the delivery of a project. The process focuses upon verifying and documenting that the facility and all of its systems, components, and assemblies are planned, designed, installed, tested, can be operated and maintained to meet the Owner's Project Requirements. Commissioning Report: The final document which presents the commissioning process results for the project. Cx reports include an executive summary, the commissioning plan, issue log, correspondence, and all appropriate check sheets and test forms. Commissioning Team: Individual team members whose coordinated actions are responsible for implementing the Commissioning Process. Contract Documents (CD): Contract documents include design and construction contracts, price agreements and procedure agreements. Contract Documents also include all final and complete drawings, specifications and all applicable contract modifications or supplements. Continuous Commissioning Process: A continuation of the Commissioning Process well into the Occupancy and Operations Phase. This process verifies that a project continues to meet current and evolving Owners Project Requirements. Continuous Commissioning Process activities are ongoing for the life of the facility. Construction Documents: Construction documents usually include the project manual (specifications), plans (drawings), and general terms and conditions of the contract. These documents vary from project to project as the owners needs changes and as various State, Federal or International regulations dictate. Construction Phase Commissioning (CPC): All commissioning efforts executed during the construction process, after the design phase, and prior to the Acceptance Phase Commissioning. Coordination Drawings: Drawings showing the work of all trades that are used to illustrate that equipment can be installed in the space allocated without compromising equipment function or access for maintenance and replacement. These drawings graphically illustrate and dimension manufacturers recommended maintenance clearances. On mechanical projects, Coordination Drawings include structural steel, ductwork, major piping and electrical conduit, and show the elevations and locations of the above components.


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Corrective Action: The act of repairing, replacing equipment or systems and extending or re-building systems through construction activities in response to a set of RCX-EB recommendations. Current Facility Requirements (CFR): A document that lists the facilities current use requirements. Similar to an OPR for new buildings but as applied to an existing facility. Data Logger: A test instrument that is utilized to record specific readings over time. Normally a battery operated instrument with multiple channels for more than one reading. Deferred System Test: Tests that cannot be completed at the end of the acceptance phase due to ambient conditions, schedule issues or other conditions preventing testing. Deferred Maintenance: Maintenance procedures which have not been done due to costs, lack of manpower or negligence. Deficiency: Any condition that adversely affects the commissionability, operability, maintainability or functionality of a system, equipment or component or an issue that does not conform to the project OPR, contract documents or standard industry best practices. Design Criteria: A listing of the projects design requirements, including its source. These are used during the design process to show the design element meets the OPR. Design Development (DD): Design Development takes the schematic design (SD) phase and turns these conceptual plans into one-line duct and piping drawings with identifiable zones. Specifications would be in outline form with typical details shown. DDs would contain preliminary equipment data schedules, etc. Design Intent: The overall term that includes the OPR and the BOD. It is a detailed explanation of the ideas, concepts, and criteria that are defined by the owner to be important. The design intent documents are utilized to provide a written record of these ideas, concepts and criteria. Design Narrative: A written description of the proposed design solutions that satisfy the requirements of the OPR. The preparation of this document is the responsibility of the Engineer. The narrative should include a description of the systems selected and why they were chosen. It should also include reasons other systems were considered and rejected. Acceptance of the items in the Design Narrative should be the consensus of both the Owner and the Engineer. Design Phase Commissioning (DPC): All commissioning tasks executed during the design phase of the project. Design Professional: The design professional, architect or engineer of record of the project. Environmental Systems: Systems that use a combination of mechanical equipment, airflow, water flow and electrical energy to provide heating, ventilating, air conditioning, humidification, and dehumidification for the purpose of human comfort or process control of temperature and humidity. Executive Summary: A section of the Commissioning report that reviews the general outcome of the project. It also includes any unresolved issues, recommendations for the resolution of unresolved issues and all deferred testing requirements.


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Fenestration: Any glass opening in a building structure such as windows, skylights and window walls. Function: For the purposes of this NEBB Standard, function refers to the specific type of data measurement specified in Table 4-1 of Section 4, Standards for Instrumentation and Calibration. Functionality: This defines a design component or construction process which will allow a system or component to operate or be constructed in a manner that will produce the required outcome of the OPR. Functional Performance Test (FPT): Tests that are intended to prove functionality of the component or system. FPTs are done after all PFT tests are complete. Indoor Environmental Quality (IEQ): The relative quality of the indoor air environment and normally includes temperature, humidity, levels of CO2 and amounts of particulates such as dust, ozone, formaldehyde, volatile organic compounds (VOC) and other trace elements. IEQ can also relate to biological contamination such as mold or Legionella bacteria and quality of the space for sound & vibration, views, and daylighting. Industry Accepted Best Practice: A design component or construction process that has achieved industry consensus for quality performance and functionality. Refer to NEBB Design Phase Commissioning Handbook for examples. Installation Verification: Observations that confirm the system or component has been installed in accordance with the contract documents and to industry accepted best practices. Issues Log: A formal and ongoing record of problems or concerns and their resolution that have been raised by members of the Commissioning Team during the course of the Commissioning Process. Light Emitting Diode (LED): Illumination devices that are used for small light sources such as exit lights or light signaling or indication. LED lights are very energy efficient but color spectrum is limited. May: The term is used to indicate a course of action that is permissible as determined by the NEBB Procedural Standards but is not required for a NEBB certified project. Maintainability: A design component or construction process that will allow a system or component to be effectively maintained. This includes adequate room for access to adjust and repair the equipment. Maintainability also includes components that have readily obtainable repair parts or service. Maintenance Management Work Orders: Work orders for building repairs or troubleshooting created from the Owners maintenance management system or procedures. NEBB: National Environmental Balancing Bureau NEBB Certified RCX-EB Firm: A firm that has met and maintains all the requirements of the National Environmental Balancing Bureau for firm certification in Retro Commissioning of Existing Buildings


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and is currently certified by NEBB. A NEBB Certified RCX-EB Firm shall employ at least one NEBB Certified RCX-EB Professional in a full time management position. NEBB Certified RCX-EB Report: The final report of a projects retro commissioning process. The retro commissioning report includes all testing data results, issue logs, observations and other pertinent data of the retro-commissioning process. NEBB Certification indicates that the retro- commissioning process and the report have been completed and compiled in accordance with the current edition of the NEBB Procedural Standards for Retro Commissioning of Existing Buildings. NEBB Certified RCX-EB Professional: A full time employee of the firm in a management position who has successfully passed the Certified Professional level examinations and maintains the Certified Professional recertification requirements of NEBB. Owners Project Requirements (OPR): A written document that details the project requirements and the expectations of how it will be used and operated. These include project goals, measurable performance criteria, cost considerations, benchmarks, success criteria, and supporting information. . Performance Verification: The act of verifying a facilities comfort level, energy usage or water usage performance as compared to a previous set of readings or verifications. Precision: The ability of an instrument to produce repeatable readings of the same quantity under the same conditions. The precision of an instrument refers to its ability to produce a tightly grouped set of values around the mean value of the measured quantity. Pre-Design Phase Commissioning: Commissioning tasks performed prior to the commencement of design activities that includes project programming and the development of the commissioning process for the project. Pre-Functional Test (PFT): An observation or test that is done before functional testing. PFTs include installation verification and system and component start up tests. Procedure: A defined approach that outlines the execution of a sequence of work or operations. Procedures are used to produce repeatable and defined results. Range: The upper and lower limits of an instruments ability to measure the value of a quantity for which the instrument is calibrated. Remedial Design: Design activities that are required to complete any corrective action as recommended through the RCX-EB process. Retro-Commissioning of Existing Buildings (RCX-EB): A process of evaluating, testing, adjusting and correcting building systems to meet the owners requirements and to improve comfort and Environmental Quality and to optimize Energy and Resource Conservation. Retro-Commissioning Authority (RCxA): An individual, who is trained, qualified and certified to perform retro-commissioning services.


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Resolution: This word has two meanings in the Cx Process. The first refers to the smallest change in a measured variable that an instrument can detect. The second refers to the implementation of actions that correct a tested or observed deficiency. Schematic Design (SD): A conceptual image of the projects engineering requirements. Load calculations, preliminary system selection, and flow sheets are developed in this phase of the project. This phase could represent the project at approximately 35% of the design effort. Shall: The term is used to indicate mandatory requirements that must be followed In order for the project to become a NEBB certified project. Work must conform to these standards and procedures and no deviation is permitted. Note: In the event unique circumstances prevent a required action from being fulfilled, a notation shall be included in the RCx report explaining the reason that the requirement was not completed. Should: The term is used to indicate that a certain course of action is preferred and recommended and should be included to provide a quality commissioning project, but is not required to be implemented in a minimum NEBB certified project. Site Observation Reports (SO): Reports of site inspections and observations made by the CA. Observation reports are intended to provide early indication of an installation issue which will need correction or analysis. Standard: A required qualification, action, or result for BSC work. Static Tests: Tests or inspections that validate a specified static condition such as pressure testing. Static tests may be specification or code initiated. Start Up Tests: Tests that validate the component or system is ready for automatic operation in accordance with the manufacturers requirements. Sound & Vibration (S&V): The process of testing and recording the sound power levels and vibration levels of a component or system. S&V is utilized to indicate the level of sound and vibration exposure to occupants of a facility. Systems Manual: A system-focused composite document that includes all information required for the owners operators to operate the systems. Test Procedure: A written protocol that defines methods, personnel, and expectations for tests conducted on components, equipment, assemblies, systems, and interfaces among systems. Testing: The use of specialized and calibrated instruments to measure parameters such as: temperature, pressure, vapor flow, air flow, fluid flow, rotational speed, electrical characteristics, velocity, and other data in order to determine performance, operation, or function. Testing, Adjusting, and Balancing (TAB): A systematic process or service applied to heating, ventilating and air-conditioning (HVAC) systems and other environmental systems to achieve and document air and hydronic flow rates. The standards and procedures for providing these services are referred to as Testing, Adjusting, and Balancing and are described in the NEBB Procedural Standards for the Testing, Adjusting and Balancing of Environmental Systems.


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Training Plan: A written document that details, in outline form, the expectations of the operator training. Training agendas should address instruction on how to obtain service, operate, startup, shutdown and maintain all systems and components of the project. Troubleshooting: The process of investigating a specific fault or failure of a system or piece of equipment. Validation: The process by which work is verified as complete and operating correctly:

1. First party validation occurs when a firm or individual verifying the task is the same firm or individual performing the task.

2. Second party validation occurs when the firm or individual verifying the task is under the control of the firm performing the task or has other possibilities of financial conflicts of interest in the resolution (Architects, Designers, General Contractors and Third Tier Subcontractors or Vendors).

3. Third party validation occurs when the firm verifying the task is not associated with or under control of the firm performing or designing the task.

Verification: The process by which specific documents, components, equipment, assemblies, systems, and interfaces among systems are confirmed to comply with the criteria described in the Owners Project Requirements. Warranty Phase Commissioning: Commissioning efforts executed after a project has been completed and accepted by the Owner. Warranty Phase Commissioning includes follow-up on verification of system performance, measurement and verification tasks and assistance in identifying warranty issues and enforcing warranty provisions of the construction contract.

Warranty Visit: A commissioning meeting and site review where all outstanding warranty issues and deferred testing is reviewed and discussed.


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SECTION 2 NEBB PROGRAM, QUALITY CONTROL AND COMPLIANCE 2.1 NEBB PROGRAMS The National Environmental Balancing Bureau (NEBB) is a not-for-profit organization founded in 1971 to:

a) develop standards, procedures and programs for the performance of testing, balancing and commissioning of building systems.

b) promote advancement of the industry through technical training and development, and c) operate programs to certify firms and qualify individuals who meet and maintain NEBB

standards with integrity.

Additional information on NEBB Programs is available at www.nebb.org. 2.1.1 NEBB DISCIPLINES NEBB establishes and maintains standards, procedures, and specifications for work in its various disciplines, which include:

a) Retro-Commissioning (RCX-EB) b) Testing-Adjusting-Balancing (TAB) of Air and Hydronic Systems c) Sound (S) Measurement d) Vibration (V) Measurement e) Cleanroom Performance Testing (CPT) f) Building Systems Commissioning (BSC) g) Fume Hood Testing (FHT)

Each discipline is anchored by a NEBB Procedural Standards manual that provides guidelines for work to be performed. NEBB also has created technical manuals, training materials and programs, and seminars to enhance and support each discipline. 2.1.2 CERTIFICATION OF FIRMS NEBB certifies firms that meet certain criteria, ensuring strict conformance to its high standards and procedures. Among other requirements, NEBB Certified Firms must document a record of responsible performance, own a complete set of instruments required for the sophisticated techniques and procedures necessary to "fine-tune" modern environmental systems, and have a NEBB Certified Professional as a full-time employee. 2.1.3 CERTIFICATION OF PROFESSIONALS NEBB also establishes professional qualifications for the supervision and performance of work in its various disciplines. NEBB Certified Professionals must have extensive experience, and they must pass appropriate, written examinations and demonstrate certain practical working knowledge and proficiency in the use of instruments required for the various disciplines.

NEBB RCX-EB PROCEDURAL STANDARDS SECTION 2 NEBB PROGRAM, QUALITY CONTROL

AND COMPLIANCE

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2.1.4 RECERTIFICATION REQUIREMENTS Through the recertification procedures, the firm must verify that its NEBB Certified Professional is still on staff and that it continues to own a complete set of instruments and equipment that are in current calibration. In addition, the firm's NEBB Certified Professional must annually renew his or her certification. Among other requirements, the Certified Professionals must keep abreast of developments in their discipline by successfully completing continuing education requirements as outlined by NEBB. 2.2 QUALITY ASSURANCE PROGRAM - CONFORMANCE CERTIFICATION The credibility of NEBB is built by maintaining integrity through high standards, quality programs, and demonstrated capabilities of its certified firms. As further assurance, NEBB offers a Quality Assurance Program to guarantee that the work will be accomplished in accordance with its standards. NEBBs Quality Assurance Program applies to each project. It assures that the NEBB Certified Firm will perform specified services in conformity with the current applicable NEBB Procedural Standards. 2.2.1 PROGRAM ADVANTAGES The NEBB Quality Assurance Program affords building owners, architects, engineers and other agents a reliable basis for specifying work within the various disciplines of NEBB. The program promotes proper execution of projects by ensuring compliance with NEBB standards and procedures. 2.2.2 NEBB QUALITY ASSURANCE PROGRAM CERTIFICATE The NEBB Quality Assurance Program Conformance Certificate is not required, but is available for any project. 2.3 QUALITY CONTROL AND COMPLIANCE Building owners are entitled to a professional service by every NEBB Certified RCX-EB Firm on every project, whether the job is NEBB specified or not. It is the responsibility of the NEBB Certified Firm and its NEBB Certified Professional to establish and maintain procedures and practices that will ensure a consistent pattern of high quality work on all projects. 2.3.1 RCX-EB WORK COMPLIANCE The scope of work shall be as agreed to between the NEBB Certified RCX-EB Firm and the Owner/Buyer. Each relevant or applicable item as identified in the scope of work shall be performed by the RCX-EB team member or be properly verified or witnessed by the NEBB RCxA and recorded in the NEBB RCX-EB Final report. Data presented in a NEBB RCX-EB report shall provide an accurate record of the system tests, measurements, and all recommendations.

a. In all cases, the processes followed, the retro-commissioning activities, the requirements of each phase and the testing results shall conform to the current edition of the NEBB Procedural Standards for Retro-Commissioning of Existing Buildings.

b. References to desired procedures may include statements such as "the work will be performed

in accordance with NEBB Standards." When contract language indicate that the RCX-EB work shall be performed in accordance with NEBB standards, the RCX-EB procedures will conform to the edition of the NEBB Procedural Standards for Retro-Commissioning of Existing Buildings in place at the time of the contract and must be performed by a NEBB certified firm.


AND COMPLIANCE

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c. The NEBB Certified RCX-EB Firm and the NEBB Certified RCX-EB Professional are allowed to sign and stamp a commissioning report as a NEBB Certified Retro-Commissioning Report only when the procedures and requirements as identified in these Procedural Standards have been followed.

d. A NEBB Certified Report may consist of any single retro-commissioning phase or any

combination of phases as described in these Procedural Standards. To qualify as a NEBB Certified Report, each retro-commissioned phase included in the report must adhere to the SHALL requirements of the phase being commissioned.

e. The actual contracted scope of work SHALL be clearly defined on the certification page of the

report as specified in the contract documents or as agreed to between the Owner / Buyer and the NEBB RCX-EB Certified Firm.

f. If the scope of work of the retro-commissioning contract does not specifically delineate the

retro-commissioning processes, then the project will be required to meet all SHALL language of this standard to be a NEBB Certified Project.

g. If a project scope of work of the retro-commissioning contract requires a different level of retro-

commissioning than described by the minimum SHALL language of this standard, the procedural variance shall be clearly delineated in the project scope of work and listed on the retro-commissioning report certification page to qualify as a NEBB Certified Report.

h. Any project that does not comply with the minimum SHALL requirements of this standard and

does not clearly identify the specific procedural variances required by the retro-commissioning contract on the certification page SHALL NOT be signed and stamped as a NEBB certified retro-commissioning report. All references to NEBB, including NEBB logos, stamps, certifications, etc SHALL be removed from the report.

2.4 RCX-EB CERTIFIED PROFESSIONAL RESPONSIBILITIES It is the responsibility of the NEBB Certified RCX-EB Professional to control the quality of the commissioning work. This means that the NEBB RCX-EB Certified Firm, through its NEBB Certified RCX-EB Professional, shall satisfy the contract obligations as defined in the contract documents or as agreed to with the Owner/Buyer. 2.4.1 EXECUTION OF RCX-EB PROCEDURES The NEBB Certified RCX-EB Professional shall have project responsibility, which includes authority to represent the NEBB Certified RCX-EB Firm. Examples of project responsibility may include labor decisions, negotiating change orders, committing to contract interpretations and implementing changes in job schedules. The NEBB Certified RCX-EB Professional has the responsibility to assure that the systems have been retro-commissioned properly in accordance with these Procedural Standards and the contract scope of work, to assure the accuracy of all data included in the final Retro-Commissioning Report. Factors such as training, instrument use, coordination / supervision, system troubleshooting, issue analysis, work instructions, and project communication play a critical role in achieving this requirement.


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2.4.2 INSTRUMENT AND EQUIPMENT USE AND MAINTENANCE NEBB Certified RCX-EB Professionals shall possess knowledge and skill in the proper use and care of the equipment and instruments required to perform the tests required in the retro-commissioning effort. This shall include a thorough understanding of the operating principles and use of equipment and instruments. Considerations for the delicate nature of many of the instruments typically used, as well as the adverse effects of dirt, shock, jarring movements and exceeding rated capacities, shall be addressed along with the proper methods for storing and transporting the instruments. 2.4.3 COORDINATION / SUPERVISION The NEBB Certified RCX-EB Professional SHALL be in responsible charge of directing retro-commissioning team members/ technicians in performing the commissioning work. 2.4.4 PROJECT COMMUNICATION The NEBB Certified RCX-EB Professional shall report on progress made toward work completion, when required, as well as report and address problems when encountered. If a life safety issue is encountered the NEBB Certified RCX-EB Professional shall notify the Owner immediately of the issue. 2.4.5 WORK COMPLETION The NEBB Certified RCX-EB Professional shall determine when the retro-commissioning work has been completed. Generally, the RCX-EB work is complete when all applicable systems, components and assemblies are properly retro-commissioned, the results of the investigation have been analyzed and recommendations are presented to the Owner in the final Retro-Commissioning report. Based on the contractual requirements, the RCX-EB work may continue through the Corrective Actions Phase. At a minimum the NEBB Certified RCX-EB Firm and RCxA should be involved in the Remedial Design and Construction of the Corrective Actions, and all work should be commissioned by the NEBB Certified RCX-EB Firm. Reasonable efforts within the extent of the retro-commissioning process and scope of the project should be performed in an effort to achieve acceptable system performance. The NEBB Certified RCX-EB Professional shall notify the Owner of any system issues, facility issues or facility personnel issues that are preventing retro-commissioning completion. 2.4.6 COMPILATION AND SUBMISSION OF FINAL RCX REPORTS Reports shall include information and data to provide an accurate quantitative record of system measurements, notes, test results and information in support of the recommendations. Reports shall meet the criteria established in Section 5. The certification page shall bear the stamp and signature of the NEBB Certified RCX-EB Professional. The stamp on the certification page shall be signed as evidence that the NEBB Certified RCX-EB Professional has personally reviewed and accepted the report. Signature stamps are specifically prohibited.

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SECTION 3 RESPONSIBILITIES 3.1 INTRODUCTION Many approaches can be taken to deliver a successful retro-commissioning project. Retro-Commissioning can be initiated for comfort and operational improvement, improvement in IEQ or for energy reduction, as well as for all three. Retro-Commissioning can be a direct consulting service, which provides only discovery and recommendations and no repair or construction services, or a turn key service which includes all repair and construction services. Retro-Commissioning services must be procured directly by the Owner or his representative and the contract for these services should be between the Owner and the Retro-Commissioning firm. 3.2 OWNER RESPONSIBILITIES 3.2.1 OWNER RESPONSIBILITIES It is recommended that the Owner:

a. Retains the services of the NEBB Certified RCX-EB Firm b. Approve RCX-EB scope of work c. Provide or facilitate site access d. Provide original construction documents if available

1) OPR 2) Drawings 3) Specifications 4) Submittals 5) Commissioning Report 6) TAB Report

e. Determine level of Owner participation in the RCX-EB process f. Determine which recommendations will be implemented g. Procure and manage corrective actions

3.3 NEBB CERTIFIED RCX-EB FIRM RESPONSIBILITIES 3.3.1 NEBB CERTIFIED RCX-EB FIRM RESPONSIBILITIES Unlike commissioning where the CA only has a very limited scope of responsibilities, the RCxA has responsibility for the final results of the improvement of the facility. The NEBB Certified RCX-EB firm shall provide the following if included in the scope of work:

a. Follow the current NEBB procedural standards when performing the RCX-EB work. b. Direct the retro-commissioning team in the process c. Create the Current Facility Requirements (CFR) d. Perform issue discovery and problem analysis e. Create Corrective Action Recommendation Report f. Assist Owner in selecting recommendations to implement g. Provide management services for corrective action implementation if not performed by Owner h. Provide Commissioning services of corrective action implementation i. Provide the final retro-commissioning report to the Owner.

NEBB RCX-EB PROCEDURAL STANDARDS SECTION 3 RESPONSIBILITIES

14

j. Coordinate and schedule any warranty commissioning or follow up retro-commissioning activities required

3.3.2 NEBB CERTIFIED TAB FIRM RESPONSIBILITIES If performing TAB work on the RCX-EB project, the NEBB Certified TAB Firms responsibilities shall be:

a. Follow the current NEBB standards and procedures when performing the TAB work b. Communicate on a regular basis, through proper channels, items relating to design,

installation, or function that prevent the NEBB Certified TAB Firm from achieving completion of the TAB work in accordance with the current edition of the NEBB Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems

c. Perform the specified commissioning support requirements d. Publish a NEBB Certified TAB Report of final conditions that accurately reflects the HVAC

system(s) final Air and Hydronic flow conditions

3.4 OTHER RETRO-COMMMISSIONING TEAM MEMBERS RESPONSIBILITIES 3.4.1 DESIGN PROFESSIONALS RESPONSIBILITIES When a design professional is a part of the RCX-EB team his/her responsibilities shall be:

a. Provide professional expertise to the retro-commissioning team for their discipline b. Assist RCxA in issue analysis as required c. Conduct any calculations, engineering or design required d. Provide Construction Documents as required to facilitate recommended corrective actions e. Provide a BOD for designs created

3.4.2 CONTRACTOR OR VENDOR RESPONSIBILITIES When a contractor or vendor is a part of the RCX-EB team his/her responsibilities shall be:

a. Provide professional expertise to the retro-commissioning team for their discipline b. Assist RCxA in issue analysis as required c. Provide activities as required to implement recommended corrective actions as directed by the

RCX-EB team. Activities may include:

i. Repair or Refurbishment ii. Adjustment or Calibration iii. Construction Services iv. Start Up Services v. Programming vi. Training

d. Provide work schedules e. Facilitate the commissioning of corrective actions f. Provide all close out documents for corrective actions which may include:

i. As Built Drawings ii. O&M Manuals iii. Warranties iv. Training documentation

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SECTION 4 STANDARDS FOR INSTRUMENTATION AND CALIBRATION 4.1 MINIMUM INSTRUMENTATION A NEBB Certified RCX-EB Firm will use a variety of instrumentation to perform the specialized testing that is part of the retro-commissioning process. It is the responsibility of the NEBB Certified RCX-EB Firm to provide appropriate instrumentation that meets the minimum requirements of Table 4-1 (US or SI) for use on a project. Instrumentation used on a NEBB project shall be in proper operating condition and shall be applied in accordance with the manufacturers recommendations. Table 4-1 (US or SI) lists the minimum instrumentation that a NEBB Certified RCX-EB Firm shall own and maintain. The NEBB Certified RCX-EB Firms must have the instruments calibrated in accordance with the calibration requirements of Table 4-1. The required instruments and equipment listed in Table 4-1 may be the same equipment and instruments utilized for TAB, S, V, BSC and/or CPT Certification. A separate set of instruments is not required.

4.2 RANGE AND ACCURACY A NEBB Certified RCX-EB Firm SHALL possess instruments for each function and range listed in Table 4-1 that are listed as SHALL requirements, and should posses instruments for each function and range listed in Table 4-1 that are listed as SHOULD requirements, or may possess instruments for each function and range listed in Table 4-1 that are listed as MAY requirements. Each instrument must have been specifically designed to meet the criteria (Minimum Accuracy, Range, and Resolution) of the function. Instrumentation with multiple capabilities shall be accepted for more than one function when submitting documentation for a firms certification, providing that each separate function meets NEBB requirements. Information and data regarding accuracy of all submitted instrumentation for the stated functions shall be available from the manufacturer. The accuracy and range as reported by the instrument manufacturer shall be verified by a testing laboratory traceable to the National Institute of Standards and Technology or equivalent institute in countries other than the United States. Calibration requirements for each function are specified and shall be met. Firms with multiple sets of instrumentation shall comply by calibrating all instrumentation used by the firm on projects in accordance with Table 4-1. All instrumentation shall comply with the calibration requirements of Table 4-1 (US or SI). This condition applies whether a firm has one instrument of each type or multiple instruments. Instruments shall be used in accordance with manufacturers recommendations. The most suitable instrument, or combination of instruments, should be employed for a particular measurement or reading.

NEBB RCX-EB PROCEDURAL STANDARDS SECTION 4 STANDARDS FOR INSTRUMENTATION

AND CALIBRATION

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TABLE 4-1 NEBB INSTRUMENTATION REQUIREMENTS (US UNITS) RCX-EB INSTRUMENTS (SHALL)

Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Rotation Measurement / Digital Rotational Speed Dual Functions 0 to 5000 rpm 2% 5 rpm 12 Months

Temperature Measurement / Digital Thermometers Air Immersion Contact

-40 to 240 oF -40 to 240 oF -40 to 240 oF

1% of reading 1% of reading 1% of reading

0.2 oF 0.2 oF 0.2 oF

12 Months

Electrical Measurement / Digital True RMS Multimeter Volts AC Amperes

0 to 600 VAC 0 to 100 Amps

2% of reading 2% of reading

1.0 Volt 0.1 Ampere

12 Months

Air Pressure Measurement / Digital Manometer

0 to 10.00 in.w.g. 2% of reading

0.01 in.w.g. 1in.w.g.

12 Months

Air Velocity Measurement (Not for Pitot tube traverses) 50 to 2500 fpm 5% of reading 20 fpm 12 Months

Humidity Measurement / Digital Hygrometer 10 to 90% RH 2% RH 1% 12 Months

Direct Reading Hood / Digital Airflow Multimeter 100 to 2000 cfm

5% of reading, 5 cfm

Digital 1 cfm Analog - Not applicable

12 Months

Pitot Tubes (2 required) 18 minimum, adequate length for intended use

Not applicable Not applicable Not required

Hydronic Pressure Measurement / Digital Hydrometer

-30 hg. to 60 PSI 0 to 100 PSI 0 to 200 PSI


0.5 PSI 1.0 PSI 2.5 PSI

12 Months

Hydronic Differential Pressure Measurement / Digital Hydrometer

0 to 100 in.w.g. 0 to 100 ft.w.g.


1.0 in.w.g. 1.0 ft.w.g. 12 Months

Data Loggers: Temperature (Qty 8)* -4 to 150 oF 0.5 oF @ 77 oF 0.2 oF Note 3 Data Loggers: Humidity (Qty 8)* 10 to 90% RH 2.5 % RH 1% Note 3 Data Loggers: Carbon Dioxide (CO2) (Qty 1) 0 to 2500 ppm 50 ppm 1 ppm 12 Months Data Loggers: Carbon Monoxide (CO) (Qty 1) 0 to 2000 ppm 5 ppm 1 ppm 12 Months

Data Loggers: Lighting Levels (Qty 1)* 0 to 3000 footcandles 10 footcandles 2 footcandles Note 3

Data Logger: Electrical (Qty 2) Volts AC Amperes



1.0 Volt 0.5 Ampere

Note 3

Data Logger: Static Pressure Low Range: (Qty 1) High Range: (Qty 1)

0 to 0.25 wc 0 to 6.00 wc

1% of full scale 1% of full scale

0.01 in.w.g. 1in.w.g

Note 3

Data Logger: Water Pressure Differential Water Pressure (Qty 1)

0 to 100 feet 0 to 100 psi


1.0 psi 1.0 psi Note 3

Data Loggers: Event (Qty 2)* Note 3 Photographs / Digital Camera 24 mm 72 mm 3 x Zoom 3.1 Mega Pixels Note 1 Thermal (Infrared) Thermometer -4 - 500 F 2% 0.1 F Note 1

1. Per Instrument Manufacturers recommendations 2. Requirements to conform Table 4-1, current edition of the NEBB Procedural Standards for the Measurement of Sound & Vibration 3. Data logger calibration may be verified from a calibrated instrument with an associated calibration form showing calibration

readings from both the calibrated instrument and the data logger. If a data logger is out of calibration and cannot be adjusted the logger must be sent back to the factory for re-calibration or be replaced.


AND CALIBRATION

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RCX-EB INSTRUMENTS (SHALL) Continued Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Receptacle Circuit Tester 125 VAC Note 1 Voltage Detector 50 -1000 VAC Note 1 Light Level Meter 0 4000 FC 2% of Reading 0.1 FC 12 Months RCX-EB INSTRUMENTS (SHOULD) Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Sound Level Meter Note 2 Note 2 Note 2 12 Months

TDS Meter 0 10,000 0 5,000 ppm 2% Full Scale 1% Note 1 Thermal Imaging Camera 20 mm 0.1 F 120 x 120 Note 1 Capacitance Moisture Meter 0 100% 5% 1.25 Penetration Note 1 Power Quality Meter Data Logger Volts AC Amperes

0-600 VAC 0 -500 Amps


1.0 VAC 0.1 Amp Note 1

Water Pressure Data Logger 0 100 PSI 1% of reading 0.1 PSI Note 1 Salt Bath N/A N/A N/A N/A RCX-EB INSTRUMENTS (MAY) Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Door Pressure Assembly 300 to 6300 cfm 5% of reading 0.004 in. w.g. 12 Months Vibration Analyzer Note 2 Note 2 Note 2 12 Months




AND CALIBRATION

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TABLE 4-1 NEBB INSTRUMENTATION REQUIREMENTS (SI UNITS) RCX-EB INSTRUMENTS (SHALL)

Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Rotation Measurement / Digital Rotational Speed Dual Functions 0 to 5000 rpm 2% 5 rpm 12 Months

Temperature Measurement / Digital Thermometers Air Immersion Contact

-40 to 115C -40 to 115C -40 to 115C


0.1C 0.1C 0.1C

12 Months

Electrical Measurement / Digital True RMS Multimeter Volts AC Amperes



1.0 Volt 0.1 Ampere 12 Months

Air Pressure Measurement / Digital Manometer

0 to 2500 Pa 2% of reading 2.5 Pa < 250 Pa 25 Pa > 250 Pa 12 Months

Air Velocity Measurement (Not for Pitot tube traverses) 0.25 to 12.5 m/s 5% of reading 0.1 m/s 12 Months

Humidity Measurement / Digital Hygrometer 10 to 90% RH 2% RH 1% 12 Months

Direct Reading Hood / Digital Airflow Multimeter 60 to 1200 m

3/h 5% of reading, 3 m3/h

Digital 1 m3/h Analog - Not applicable

12 Months

Pitot Tubes (2 required) 18 minimum, adequate length for intended use

Not applicable Not applicable Not required

Hydronic Pressure Measurement / Digital Hydrometer

-760 mm hg. to 400 kPa 0 to 700 kPa 0 to 1400 kPa


3.3 kPa 6.7 kPa 16.7 kPa

12 Months

Hydronic Differential Pressure Measurement / Digital Hydrometer

0 to 25 kPa 0 to 300 kPa


250 Pa 3.0 kPa 12 Months

Data Loggers: Temperature (Qty 8)* -20 - 65C 1% of reading 0.10 C Note 3 Data Loggers: Humidity (Qty 8)* 10 to 90% RH 2% RH 0.05% RH Note 3 Data Loggers: Carbon Dioxide (CO2) (Qty 1) 0 to 2500 ppm 50 ppm 1 ppm 12 Months Data Loggers: Carbon Monoxide (CO) (Qty 1) 0 to 2000 ppm 5 ppm 1 ppm 12 Months Data Loggers: Lighting Levels (Qty 1)* 0 to 30000 lux 100 lux 20 lux Note 3 Data Logger: Electrical (Qty 2) Volts AC Amperes



1.0 Volt 0.5 Ampere

Note 3

Data Logger: Static Pressure Low Range: (Qty 1) High Range: (Qty 1)

0 to 800 Pa 0 to 18000 Pa

1% of full scale 1% of full scale

30 Pa 3000 Pa Note 3

Data Logger: Water Pressure (Qty 1) 0 700 kPa 1% of reading 0.5 kPa Note 3 Data Loggers: Event (Qty 2)* Note 3 Photographs / Digital Camera 24 mm 72 mm 3 x Zoom 3.1 Mega Pixels Note 1 Thermal (Infrared) Thermometer -20 - 260 C 2% 0.1 C Note 1




AND CALIBRATION

19

RCX-EB INSTRUMENTS (SHALL) Continued Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Receptacle Circuit Tester 240 VAC Note 1 Voltage Detector 50 -1000 VAC Note 1 Light Level Meter 0 40,000 lux 2% of Reading 0.1 lux 12 Months RCX-EB INSTRUMENTS (SHOULD) Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Sound Level Meter Note 2 Note 2 Note 2 12 Months

TDS Meter 0 10,000 0 5,000 ppm 2% Full Scale 1% Note 1 Thermal Image Camera 20 mm 0.1 C 120 x 120 Note 1 Capacitance Moisture Meter 0 100% 1.25 Penetration Note 1 Light Level Data Logger 0 3000 lumens Note 1 Power Quality Meter Data Logger Volts AC Amperes

0-600 VAC 0 -500 Amps


1.0 VAC 0.1 Amp Note 1

Water Pressure Data Logger 0 700 KPa 1% of reading 700 Pa Note 1 Salt Bath N/A N/A N/A N/A RCX-EB INSTRUMENTS (MAY) Function/Instrument Type Minimum Range Accuracy Resolution Calibration Interval Door Pressure Assembly 180 to 3800 m3/h 5% of reading 12 Pa. 12 Months Vibration Analyzer Note 2 Note 2 Note 2 12 Months




AND CALIBRATION

20

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SECTION 5 STANDARDS FOR REPORTS AND FORMS 5.1 RETRO-COMMISSIONING REPORT The NEBB Procedural Standards for Retro-Commissioning of Existing Buildings establishes minimum requirements of a NEBB Certified RCX-EB Report. The standards have been developed and written using SHALL, SHOULD, and MAY language. It is important to note these particular words throughout this document and how they pertain to NEBB Procedural Standards. NEBB RCX-EB Report includes the following information:

A. Report Title Page (SHALL) B. Report Certification Page (SHALL) C. Table of Contents Page (SHALL) D. Executive Summary (SHALL) E. Project CFR (SHOULD) F. Retro-Commissioning Plan (SHALL) G. Data Logs (SHOULD) H. Interview Records (SHOULD) I. Testing Check Sheets (SHALL) J. Utility Usage Evaluation (SHALL) K. Quick Fix Report (SHALL) L. Corrective Action Recommendation Report (SHALL) M. Commissioning Report of Corrected Actions (SHALL) N. TAB Report (SHOULD) O. Commissioning Communications (SHOULD) P. Test Instrument Page (MAY)

5.2 REQUIRED PAGES The requirements for each NEBB Certified RCX-EB Report are listed below: 5.2.1 REPORT TITLE PAGE SHALL Data: The report title page SHALL include the following:

a. The heading: Certified Retro-Commissioning Report b. Project Name / Project Address c. Owner Name / Address / Contact Numbers d. NEBB Certified RCX-EB Firm Name / Address / Contact Numbers / Certification Number

NEBB RCX-EB PROCEDURAL STANDARDS SECTION 5 STANDARDS FOR REPORTS AND FORMS

22

MAY Data: The report title page MAY include remaining retro-commissioning team members:

a. Design Professionals, Name / Address / Contact Numbers b. Contractors, Names / Address / Contact Numbers c. Vendors, Name / Address / Contact Numbers d. Operators, Name / Address / Contact Numbers

5.2.2 REPORT CERTIFICATION PAGE The certification page SHALL bear the stamp of the NEBB Certified RCX-EB Professional. The stamp on the certification page SHALL be signed or secure digital signature affixed as evidence that the NEBB Certified Professional has reviewed and accepted the report. Signature stamps are specifically prohibited. SHALL Data: The report certification page shall include the following:

a. Project Name b. Certified RCX-EB Professionals Name c. Firm Name; Certification Number; Expiration Date d. Commissioning Phases performed to NEBB standards e. Certified RCX-EB Professionals NEBB Stamp (signed & dated); and the following exact

verbiage: "THE DATA, CONCLUSIONS AND RECOMMENDATIONS PRESENTED IN THIS REPORT ARE A RECORD OF THE RETRO-COMMISSIONING PROCESS UTILIZED ON THIS PROJECT IN ACCORDANCE WITH THE NEBB RETRO-COMMISSIONING PROCEDURAL STANDARDS AND THE CONTRACT REQUIRMENTS

f. Statement of Scope of Work and variance deviation documentation

The Report Certification Page SHALL also include an exact description of the project commissioning scope of work as per the commissioning contract. Any specific required variances from the NEBB required minimum SHALL requirements will be clearly defined.

SHOULD Data: The report certification page should include the following:

THE RESULTS SHOWN AND INFORMATION GIVEN IN THIS REPORT ARE CERTIFIED TO BE TRUE AND ACCURATE TO THE EXTENT POSSIBLE DUE TO THE SYSTEMS OPERATING PARAMETERS AT THE TIME THE SYSTEMS WERE TESTED. THE RETRO-COMMISSIONING AUTHORITY MAKES NO CLAIMS OR WARRANTIES STATED OR IMPLIED CONCERNING THE CONTINUED PERFORMANCE, OPERATION OR SAFETY OF THE FACILITY PAST THE TEST DATE IF CONDITIONS CHANGE OR OPERATING PARAMETERS WERE CHANGED BY OTHERS.

5.2.3 TABLE OF CONTENTS PAGE The Table of Contents SHALL serve as a guide to the organization of the RCX-EB report. SHALL Data: Page numbers in the report. 5.2.4 EXECUTIVE SUMMARY A NEBB Certified RCX-EB Report SHALL include an executive summary. SHALL Data: The executive summary SHALL include the following information:


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a. Review of the Retro-Commissioning Project Processes utilized

1. Refer to NEBB Procedural Standards for standard processes 2. Refer to Retro-Commissioning Plan for specific processes

b. Review any deviations used c. Review of each recommended corrective action and its relative priority d. Review any areas of concern that are not addressed in the corrective action report and the

reasons these issues were not addressed e. Review of each deferred system test that is to be performed in the future

5.2.5 PROJECT CFR A NEBB Certified RCX-EB Report SHOULD include the Current Facilities Requirements (CFR). The CFR documents any changes in the existing facility from its original design intent. SHOULD Data: The CFR SHOULD include the following information:

a. Current Occupancy Information b. Change of Use Documentation c. Zoning changes d. Owners Sustainability and Building Rating Requirements e. Energy and Efficiency Requirements f. Operation and Maintenance Issues

5.2.6 RETRO-COMMISSIONING PLAN A NEBB Certified RCX-EB Report SHALL include the final project retro-commissioning plan which includes the following: SHALL Data: The retro-commissioning plan SHALL include the following information:

a. Retro-Commissioning Scope b. Retro-Commissioning Team c. Retro-Commissioning Team Member Responsibilities d. Channels of communication e. Retro-Commissioning Procedures Utilized

SHOULD Data: The commissioning plan SHOULD include the Retro-Commissioning schedule.

5.2.7 DATA LOGS A NEBB Certified RCX-EB Report SHOULD include data log graphs that were utilized in discovery and analysis of corrective action recommendations. SHOULD Data: Data Logs SHOULD include the following information:

a. Project Name b. Date and Time of data c. Location d. Variables Recorded e. Parameters


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5.2.8 INTERVIEW RECORDS A NEBB Certified RCX-EB Report SHOULD include any interview records that pertain to information used to discover or analyze corrective action recommendations. SHOULD Data: The interview records SHOULD include the following:

a. Project Name b. Date of Interview c. Person conducting the interview d. Persons interviewed or group type e. Interview Questions f. Interviewee responses g. Interviewer Comments

5.2.9 TESTING CHECK SHEETS A NEBB Certified RCX-EB Report SHALL include completed copies of all testing records including check sheets and forms or data trends or logs which indicate testing results.

5.2.10 UTILITY USAGE EVALUATION A NEBB Certified RCX-EB Report SHALL include a facility utility evaluation report. SHALL Data: The utility usage evaluation SHALL include the following information:

a. Utility usage cost per square foot per month and per year per utility b. Utility units quantity usage per month and per year per utility c. Water Utility usage costs per occupant per month per year d. Water utility GPM per occupant per month per year

5.2.11 QUICK FIX REPORT A NEBB Certified RCX-EB Report SHALL include a report of all quick fixes performed during the site inspection phase. The following items SHOULD be included in the quick fix report:

a. System Adjustments made b. Sensor Calibration performed c. Repairs performed d. Sequences that were changed or modified e. Operations that were modified f. Operator training given

5.2.12 CORRECTIVE ACTIONS RECOMMENDATION REPORT A NEBB Certified RCX-EB Report SHALL include the final corrective action recommendation report. SHALL Data: The Corrective Action Recommendation Report SHALL include the following information for each recommended corrective action:

a. Project Name b. Description of deficiency

i. Descriptive narrative ii. Pictures iii. Test Data


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c. Recommended Solution i. Engineering Calculations ii. Drawings & Sketches iii. Sequence of Operations or other descriptive narratives

d. Predicted costs of recommended corrective action e. Calculation of predicted payback and ROI f. Predicted results of recommended corrective action g. Predicted schedule of corrective action

5.2.13 COMMISSIONING REPORT OF CORRECTIVE ACTIONS A NEBB Certified RCX-EB Report SHALL include the final commissioning report of all corrective actions taken, if included in RCX scope of work. Commissioning of corrective actions shall be done in accordance with the latest version of the NEBB Procedural Standard for Whole Building Systems Commissioning of New Construction. The commissioning report shall include SHALL Data: Commissioning report SHALL include the following information:

a. Report Title Page b. Report Certification Page c. Table of Contents Page d. Executive Summary e. Project CFR f. Commissioning Plan g. Final Issue Log h. Completed Pre Functional Test Forms And Check Sheets i. Completed Functional Performance Test Forms and Check Sheets j. Observation Reports k. Training Verification Records l. Commissioning Communications m. Test Instrument Page

5.2.14 TAB REPORT A NEBB Certified RCX-EB Report SHOULD include a Test and Balance (TAB) report if test and balance work was performed. If TAB was performed the report shall be in accordance with the latest edition of the NEBB Procedural Standards for Testing, Adjusting and Balancing of Environmental Systems. 5.2.15 COMMISSIONING COMMUNICATIONS A NEBB Certified RCX-EB Report SHOULD include all pertinent commissioning communications. SHOULD Data: Commissioning communications will include the following information:

a. Letters between the commissioning team members that are pertinent to the retro-commissioning process performed or not performed for the project

b. Emails or other written documentation covering issues or issue resolution for the project

5.2.16 TEST INSTRUMENT PAGE A NEBB Certified RCX-EB Report MAY include a Test Instrument page. MAY Data: The Test Instrument page may include following information:

a. List of NEBB required tools employed on the project b. Model number and Serial number of each instrument c. Certification date of each instrument


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5.2.17 ALL REPORT PAGES All tested items or systems included in the NEBB RCX-EB Report SHALL be clearly identified with a unique designation. The method of identification may use unique numbers, mechanical plans identification, or an appropriate narrative description. SHALL Data:

a. All pages SHALL contain the name of the project b. All pages SHALL be identified with a unique page number

MAY Data: Pages MAY include a remarks section to record any information pertinent to the data reported on the data sheet.

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PART 2 - PROCESS SECTION 6 RETRO-COMMISSIONING PROCESS 6.1 INTRODUCTION Retro-commissioning is a holistic process. The RCX-EB Team will investigate, review, and analyze the issues from a global point of view. RCX-EB is NOT just troubleshooting. The RCX-EB Team will review selected systems to determine how they may inter-relate with the entire facility to define, investigate and solve problems. The RCX-EB process may also be utilized to evaluate and validate the present operating status of a facility. The RCX-EB process includes: the review of all of the appropriate documentation of an existing facility to understand the intent of the previous designs; conducting interviews with management, operations staff and occupants to determine their perspective on current facility conditions; investigation; and testing possible conditions that may influence or relate to a perceived problem. The Retro-Commissioning Authority (RCXA) will then analyze the results of the investigations and recommend solutions. The recommended solutions may, or may not, be implemented by the Owner depending upon capital availability, payback and other issues. If the recommendations are accepted by the owner, the implementation of those recommendations is completely commissioned starting with the Design Phase through the Warranty Phase. One thing that the NEBB Certified RCX-EB Firm and the NEBB Certified RCx-EB Professional must understand is that RCX-EB is not a linear process. The phases and activities presented in this section, and Section 7, may make it appear that once an activity or phase is complete, that activity or phase need not be repeated again. The nature of retro-commissioning is exactly the opposite. The process is iterative. There will be conditions where a discovery of a problem in one area will require the RCXA to return to a previous activity and start the investigative process again. Section 6 describes the Retro-Commissioning process in general terms and standard procedures. Section 7 describes specific procedures and processes that are necessary to retro-commission existing buildings systems. The retro-commissioning process will always focus on a buildings components and operational systems to improve the buildings functionality. Sections 7 describes in detail the NEBB approved procedures to accomplish these tasks. This section clearly defines in SHALL, SHOULD and MAY language the exact NEBB requirements for a NEBB Certified RCX-EB project.

6.2 RETRO-COMMISSIONING PHASES The actual scope of Retro-Commissioning services to be provided will be mutually agreed to between the Owner and the NEBB Certified RCX-EB Firm.

NEBB PROCEDURAL STANDARDS RCX-EB SECTION 6 RETRO COMMISSIONING PROCESS

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The phases of retro-commissioning are as follows:

Contract Phase Pre Site Investigation Phase Site Investigation Phase Analysis Phase Corrective Action Phase Follow Up Phase

NEBB recommends that the six phases of the RCx process be performed on all projects. However, individual phases may be performed at the direction of the Owner. The project retro-commissioning scope may also be limited to a portion of a project by phase. Any separate phase or portion of a project is required to meet all SHALL criteria to be a NEBB Certified Project. If a project scope of work, requires a different level of retro-commissioning than described by the minimum SHALL language, it must be clearly delineated in the project scope of work and SHALL be included in the Certification page of the final Cx report. If a scope of work does not specifically delineate the retro-commissioning processes, the project will then be required to meet all SHALL language for each phase. Any project that does not comply with the statements above or involves procedures and requirements that do not include all minimum SHALL requirements listed in the NEBB Procedural Standards for Retro-commissioning of Existing Buildings requirements SHALL NOT be signed and stamped as a NEBB certified retro-commissioning report. All references to NEBB, including NEBB logos, stamps, certifications, etc. SHALL be removed from the report. 6.3 CONTRACT PHASE 6.3.1 INTRODUCTION The main purpose of the Contract Phase is to clearly define the scope of the retro-commissioning project. This scope of work will become the basis for a contract between the RCX-EB Firm and the Owner. Retro-Commissioning can be a direct consulting service, which provides only discovery and recommendations and no repair or construction services, or a turn key service which includes all repair and construction services. 6.3.2 RESPONSIBILITES 6.3.2.1 Team Members During the Contract phase the Owner and the Retro-Commissioning Authority (RCxA) should review the subject project to clearly define the owners expectations of the project. The required retro-commissioning team members for the Contract Phase should be as follows:

a. Owners Representatives b. Building Operations and Maintenance Staff c. Retro-Commissioning Authority (RCXA) d. RCX-EB Team Members (As Required)

6.3.2.2 Team Responsibilities During the contract phase the retro-commissioning team has the responsibility of defining the contract scope of work and to define the Owners expectations of the project.


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6.3.3 ACTIVITIES 6.3.3.1 Site Tour The RCxA SHALL perform a site tour to determine the general condition of the facility and to determine the cost of the retro-commissioning for the project proposal. The site tour is also the time to discover the owners desires for the facilities operating improvements and to define the scope of work that will become the basis of the RCX-EB project. During the site tour, the RCXA needs to observe conditions that will directly affect the ability to retro-commission the project and to spot any apparent systems operating issues. These items will also directly affect the cost and the RCX-EB scope of work. The following are examples of such system items:

a. Access to equipment, systems and components for inspection and testing 1. Hard Ceilings vs. Lay-in Tiles 2. Security Requirements 3. Overtime Requirements vs. Normal Business Hours

b. Physical condition of the buildings technical systems 1. Equipment deferred maintenance 2. Observe how the system is being operated 3. Observe the condition of Duct and Pipe systems 4. Determine the condition and utilization of control systems

c. Availability of Existing Documentation 1. Drawings 2. Specifications 3. Electric and Gas Utility Bills 4. Previous Engineering Reports/Studies 5. TAB Reports 6. Commissioning Reports 7. Maintenance Work Order Reports

d. Involvement of Owners staff / operating personnel 6.3.3.2 Proposal Development Develop a document that defines the RCX-EB scope of work for the project. In general, the owner will normally provide some direction as to related issues for various systems, equipment and components to review. The areas for improvement may be energy savings, reduced maintenance costs, improved environmental comfort or other performance improvements with acceptable payback periods for capital improvements. The proposal SHALL identify the following:

a. Scope of the RCX-EB services to be performed onthe HVAC system b. Cost (Lump Sum, GMP, T&M) c. Anticipated schedule d. Owner Involvement e. Retro-Commissioning Team f. Qualifications and Exclusions

6.3.3.3 Contract The owner and the RCXA may work together to develop an RCX-EB contract or agreement that meets the Owners needs. At a minimum the agreement shall contain the following:


30

a. The retro-commissioning scope b. The owners resource commitment to the retro commissioning team c. Contract cost agreement d. Retro-commissioning schedule expectations e. Responsibilities of the Owner f. Responsibilities and liabilities of the RCX-EB Provider

6.3.4 CONTRACT PHASE DOCUMENTATION The following retro-commissioning documents are produced during Contract Phase.

a. Retro-commissioning Contract or Agreement (SHALL) 6.4 PRE SITE INVESTIGATION PHASE 6.4.1 INTRODUCTION The RCxA must prepare for the site investigation phase by accumulating all documentation available on the existing facility and its systems. These preparatory activities are done during the Pre Site Investigation Phase. The RCXA and the RCX-EB Team Members must familiarize themselves with the facility prior to conducting the site investigation and testing. This is most effectively accomplished by reviewing existing documentation of the facility; drawings and specifications, utility bills, work orders, maintenance lists, contractor service invoices, etc. 6.4.2 RESPONSIBILITIES 6.4.2.1 Team Members The required retro-commissioning team members for the pre site investigation phase should be:

a. Owners Representatives b. Operations and Maintenance staff c. Retro-commissioning Authority (RCXA) d. RCX-EB team members that have been identified for their specific expertise

6.4.2.2 Team Responsibilities During the pre site investigation phase the retro-commissioning team has the responsibility of creating the Current Facility Requirements and to develop the Retro-commissioning Plan. 6.4.3 ACTIVITIES 6.4.3.1 Retro-commissioning Plan The RCXA SHALL develop a preliminary retro-commissioning plan to be utilized for the retro-commissioning process. The RCX-EB Plan would be based on the actual scope of work required in the contract. The elements included in the retro-commissioning plan should include:

a. Project Scope of Work b. Team Members and their responsibilities c. Means and Methods to be utilized

6.4.3.2 Document and Design Review The RCxA SHALL request copies of the original HVAC construction documents, any remodel or tenant improvement documents, etc. The RCxA SHALL provide a design review of all documents to discover any possible original design or construction deficiencies. On most projects, the availability of these documents will be limited. The RCxA will need to obtain as much of the data as possible during


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this phase and supplement missing data with field observations in the Site Investigation Phase. The documents reviewed should include the following:

a. Original OPR and BOD b. Architectural, HVAC, Plumbing and Electrical Drawings c. Architectural, HVAC, Plumbing and Electrical Specifications d. Architectural, HVAC, Plumbing and Electrical Submittals e. O & M / Systems Manuals f. TAB Report g. Commissioning Reports

6.4.3.3 Operation Records Review The RCXA SHALL request copies of all utility bills and HVAC work order records for the facility for the previous 3 years. The RCXA SHALL request copies of all HVAC contractor maintenance / service invoices and copies that are available of all HVAC and Electrical equipment replacement or major repairs made since the buildings construction. The RCXA SHALL provide a review of maintenance and repair work order issues to determine if any pattern is present indicating a recurring problem. The following should be reviewed:

a. HVAC Work Orders b. Electric, Gas, Water, Steam and other Utility Bills c. Contractor Maintenance / Service Invoices related to HVAC Equipment/Systems d. HVAC Repair / Replacement Purchase Orders /Documentation e. Work order duration and completion status

6.4.3.4 Utility Usage Evaluation From past historical utility bills the RCXA must determine the overall facility usage. The evaluation SHALL include the following:

a. Electrical Cost per square foot per billing period and per year b. Total KW Demand and KWH used per billing period and per year c. Gas Therms and Cost per square foot per billing period and per year d. Purchased Energy (Steam, CW, HW, etc.) Costs per square foot per billing period and per year e. Total BTU / Year / Square Foot f. HVAC and Plumbing systems water costs per billing period and per year

6.4.3.5 Management Staff Interview The RCXA SHALL conduct and document an interview with the Owners manager of the facility being retro-commissioned. The purpose of the interview is to determine the managers opinion of any facility issues, if any critical areas of operation are present in the facility and to make management aware of the activities that will be conducted in the facility during the Retro-Commissioning Process. This interview is also utilized to determine security issues, access requirements, schedule requirements, obtain site access master keys or access cards and to obtain the managers permission to interview facility occupants. 6.4.3.6 Maintenance Staff Interviews The RCXA SHALL conduct and document an interview with the Owners maintenance staff of the facility being retro-commissioned. The purpose of the interview is to determine their opinions of any system problems or facility issues that are a concern to them. This interview also helps to identify


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what HVAC or other systems maintenance services they are presently performing and to discover repairs to equipment or systems they have recently completed. 6.4.3.7 Occupant Interviews The RCXA SHOULD conduct and document interviews of occupants of the facility being retro-commissioned. The purpose of the interviews is to determine opinions of any facility issues, determine the comfort level of occupant space and to discover any information that may help discover operational issues. 6.4.3.8 Current Facility HVAC Requirements (CFR) The RCxA must update the original OPR to create a current CFR. If no OPR exists the RCxA SHOULD create a CFR for the RCX-EB project. The CFR will be updated and expanded as the project proceeds to completion. The CFR should include the following:

a. Building Requirements 1. Size and Type 2. Use and Occupancy

i. Maximum Occupancy per shift ii. Time of occupancy per shift iii. Activity level of occupants

3. Historic Preservation 4. Future Adaptability 5. Comfort parameters, temperature, sound, vibration, ventilation, light, etc.

b. Sustainability 1. Define Green Building Rating level 2. Renewable Energy 3. Carbon Footprint 4. Occupant recycling requirements 5. Natural Ventilation 6. IAQ

c. Energy and Efficiency 1. Electrical Usage and Efficiency 2. HVAC Water Usage and Efficiency 3. Gas Usage and Efficiency 4. Renewable Energy 5. Cogeneration 6. Measurement and Verification requirements

d. Building Envelope Systems 1. List of enclosure types utilized 2. Description of systems utilized 3. Description of active envelope control systems utilized

e. HVAC Systems and Components 1. List of Equipment utilized 2. Description of systems utilized 3. Description of control system utilized

f. Electrical and Lighting Systems and Components 1. List of Equipment utilized 2. Description of systems utilized 3. Description of control system utilized

g. Plumbing and Landscape Watering Components 1. List of Equipment utilized


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2. Description of systems utilized 3. Description of control system utilized

h. Operation and Maintenance 1. Level of Operators technical capability 2. Level of Operators training requirements

6.4.4 PRE SITE INVESTIGATION PHASE DOCUMENTATION The following retro-commissioning documents are produced during the Pre Site Investigation phase:

a. Retro-Commissioning Plan (SHALL) b. Design Review Documentation (SHALL) c. Operations Records Review Documentation (SHOULD) d. Management Interview Documentation (SHALL) e. Maintenance Staff Interview Documentation (SHALL) f. Occupant Interview Documentation (SHOULD) g. CFR (SHOULD) h. Building Energy Usage records (SHALL) i. Building Water Usage records (SHOULD)

6.5 SITE INVESTIGATION PHASE See Sections 7 for specific site investigation activities and responsibilities. 6.5.1 INTRODUCTION During the Site Investigation Phase, the RCX-EB team shall perform the required site investigations and tests to discover Current Facility Requirements (CFR) and to discover any facility deficiencies that are preventing the operating conditions desired by the Owner. Sometimes, the owner will want to utilize their staff to assist with the retro-commissioning site discoveries. This will impact the overall cost versus using the RCXA personnel. However, under this arrangement, the RCXA SHOULD provide training sessions to familiarize the owners personnel in the retro-commissioning process. 6.5.2 RESPONSIBILITES 6.5.2.1 Team Members The retro-commissioning team members for the Site Investigation Phase should be:

a. Owners Representatives b. Retro-Commissioning Authority (RCXA) c. Design Team Representatives (If Required)

1. Architect 2. Mechanical Engineer 3. Electrical Engineer

d. Technical Trade Representatives (If Required) 1 General Construction 2 Mechanical 3 Electrical 4 Controls 5 TAB 6 Plumbing 7 Fire protection 8 Others

e. Operators and Maintenance staff (If Required)


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6.5.2.2 Team Responsibilities During the site investigation phase the retro-commissioning team has the responsibility of discovering building issues that prevent the facility from meeting the desired operating parameters in accordance with the scope of work and the CFR. 6.5.3 ACTIVITIES 6.5.3.1 Owners Staff Training On projects where the RCXA will utilize the owners personnel to assist in the site investigation phase, the RCXA SHOULD provide a training session to familiarize them in the retro-commissioning process and their roles, responsibilities and expectations. 6.5.3.2 Site Investigations The RCXA SHALL conduct a survey of the facility to determine if the current conditions such as occupancy and space utilization have changed since original constr

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