Data-Centers-NC-v4 EAc1: Enhanced commissioning

  • Go beyond fundamental commissioning

    This credit goes beyond the commissioningThe process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. work required for the prerequisite. Any project can pursue this credit, but teams sometimes choose not to pursue it due to the increased cost and uncertainty around its benefits. 

    However, with the increase in scope of fundamental commissioning in LEED v4, the cost difference between the two has narrowed. This change may make enhanced commissioning more attractive for your project.

    Teams should remember that there are rules around who can act as the commissioning agent (CxAThe commissioning authority (CxA) is the individual designated to organize, lead, and review the completion of commissioning process activities. The CxA facilitates communication among the owner, designer, and contractor to ensure that complex systems are installed and function in accordance with the owner's project requirements.) on a project, and these rules change depending on whether you’re pursuing fundamental or enhanced commissioning. The intent is to hire a CxACommissioning authority: the individual designated to organize, lead, and review the completion of commissioning process activities. The CxA facilitates communication among the owner, designer, and contractor to ensure that complex systems are installed and function in accordance with the owner's project requirements. with no conflicts of interest so they can provide clear, objective leadership in executing the commissioning process and ensuring that both the owner’s goals and the design intentA written document that details the ideas, concepts, and criteria that are determined by the owner to be important to the success of the project. are achieved. See the table in the LEED Reference Guide for details on who can be the CxA for your building.

    No matter who fills the role of CxA on your project, or how they are contracted, they should note all conditions that are not aligned with the owner’s requirements and design intent, and report these findings and any recommendations directly to the owner.

    Building enclosure commissioning (BECx) is now a part of enhanced commissioning. The benefits of envelope commissioning are significant, but the scope and industry is still maturing and developing. The cost for envelope commissioning is very dependent on so many factors, that it is difficult to put even a cost range on the service at this point. We recommend seeking proposals, including recommended scope, from at least two qualified firms, then evaluate the benefits of the proposals. 

    What’s New in LEED v4

    • This credit now includes options for monitoring-based and building envelope commissioning.

    FAQs

    Can non-design consultants on the project provide enhanced commissioning services?

    Yes. Consultants who provide non-design services, such as LEED services or energy modeling, can also be the CxA for the project. However, if those firms have affected the design of the building, they should not be selected as the CxA. 

  • EA Credit 1: Enhanced commissioning

    Intent

    To further support the design, construction, and eventual operation of a project that meets the owner’s project requirements for energy, water, indoor environmental quality, and durability.

    Requirements

    Implement, or have in place a contract to implement, the following commissioningThe process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. process activities in addition to those required under EA Prerequisite Fundamental Commissioning and Verification.

    Commissioning authority

    • The CxAThe commissioning authority (CxA) is the individual designated to organize, lead, and review the completion of commissioning process activities. The CxA facilitates communication among the owner, designer, and contractor to ensure that complex systems are installed and function in accordance with the owner's project requirements. must have documented commissioning process experience on at least two building projects with a similar scope of work. The experience must extend from early design phase through at least 10 months of occupancy;
    • The CxACommissioning authority: the individual designated to organize, lead, and review the completion of commissioning process activities. The CxA facilitates communication among the owner, designer, and contractor to ensure that complex systems are installed and function in accordance with the owner's project requirements. may be a qualified employee of the owner, an independent consultant, or a disinterested subcontractor of the design team.
    Option 1. Enhanced systems commissioning (3-4 points)
    Path 1: Enhanced commissioning (3 points)

    Complete the following commissioning process (CxP) activities for mechanical, electrical, plumbing, and renewable energy systems and assemblies in accordance with ASHRAE Guideline 0–2005 and ASHRAE Guideline 1.1–2007 for HVAC&R systems, as they relate to energy, water, indoor environmental quality, and durability.

    The commissioning authority must do the following:

    • Review contractor submittals.
    • Verify inclusion of systems manual requirements in construction documents.
    • Verify inclusion of operator and occupant training requirements in construction documents.
    • Verify systems manual updates and delivery.
    • Verify operator and occupant training delivery and effectiveness.
    • Verify seasonal testing.
    • Review building operations 10 months after substantial completion.
    • Develop an on-going commissioning plan.

    Include all enhanced commissioning tasks in the OPROwner's project requirements (OPR) is a written document that details the ideas, concepts, and criteria that are determined by the owner to be important to the success of the project. and BODBasis of design (BOD) includes design information necessary to accomplish the owner's project requirements, including system descriptions, indoor environmental quality criteria, design assumptions, and references to applicable codes, standards, regulations, and guidelines..

    OR

    Path 2: Enhanced and monitoring-based commissioning (4 points)

    Achieve Path 1.

    AND

    Develop monitoring-based procedures and identify points to be measured and evaluated to assess performance of energy- and water-consuming systems.

    Include the procedures and measurement points in the commissioning plan. Address the following:

    • roles and responsibilities;
    • measurement requirements (meters, points, metering systems, data access);
    • the points to be tracked, with frequency and duration for trend monitoring;
    • the limits of acceptable values for tracked points and metered values (where appropriate, predictive algorithms may be used to compare ideal values with actual values);
    • the elements used to evaluate performance, including conflict between systems, out-of-sequence operation of systems components, and energy and water usage profiles;
    • an action plan for identifying and correcting operational errors and deficiencies;
    • training to prevent errors;
    • planning for repairs needed to maintain performance; and
    • the frequency of analyses in the first year of occupancy (at least quarterly).

    Update the systems manual with any modifications or new settings, and give the reason for any modifications from the original design.

    Projects that select Option 1 must complete the following commissioning process.

    For small projects with peak cooling loads less than 2,000,000 BtuA unit of energy consumed by or delivered to a building. A Btu is an acronym for British thermal unit and is defined as the amount of energy required to increase the temperature of 1 pound of water by 1 degree Fahrenheit, at normal atmospheric pressure. Energy consumption is expressed in Btu to allow for consumption comparisons among fuels that are measured in different units./h (600 kW), or a total computer room peak cooling load less than 600,000 Btu/h (175 kW), the CxA must perform the following activities:

    • conduct at least one commissioning verification review of the owner’s project requirements, basis of designThe information necessary to accomplish the owner's project requirements, including system descriptions, indoor environmental quality criteria, design assumptions, and references to applicable codes, standards, regulations, and guidelines., and design documents before mid-construction documents development;
    • back-check the review comments in all subsequent design submissions; and
    • conduct an additional full verification review at 95% completion of the design documents and basis of design.

    For projects with peak cooling loads 2,000,000 Btu/h (600 kW) or more, or a total computer room peak cooling load 600,000 Btu/h (175 kW) or more, the CxA must conduct at least three verification reviews of the basis of design:

    • one verification review of design documents before the start of design development;
    • one verification review of design documents before midconstruction documents; and
    • one final verification review of 100% complete design documents, verifying achievement of the owner’s project requirements and adjudication of previous review comments.

    AND/OR

    Option 2. Envelope commissioning (2 points)

    Fulfill the requirements in EA Prerequisite Fundamental Commissioning and Verification as they apply to the building’s thermal envelope in addition to mechanical and electrical systems and assemblies.

    Complete the following commissioning process (CxP) activities for the building’s thermal envelope in accordance with ASHRAE Guideline 0–2005 and the National Institute of Building Sciences (NIBS) Guideline 3–2012, Exterior Enclosure Technical Requirements for the Commissioning Process, as they relate to energy, water, indoor environmental quality, and durability.

    Commissioning authority must complete the following:

    • Review contractor submittals.
    • Verify inclusion of systems manual requirements in construction documents.
    • Verify inclusion of operator and occupant training requirements in construction documents.
    • Verify systems manual updates and delivery.
    • Verify operator and occupant training delivery and effectiveness.
    • Verify seasonal testing.
    • Review building operations 10 months after substantial completion.
    • Develop an on-going commissioning plan.

1 Comments

0
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Vassil Vassilev Manager Termoservice OOD
Aug 03 2016
LEEDuser Member
430 Thumbs Up

Commissioning of DATA Centers

Project Location: Russian Federation

Greetings,
There is a question from the Owner of Data center in respect of the forth comming commissioningThe process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. process for his project.
The question is related to the specific IT equipment and the special el. system connected with it. The Owner would like these equipment to be also commissioned upon LEED EA Fundamental and/or Enhanced Commissioning.
In all of the Cx1. Commissioning (Cx) is the process of verifying and documenting that a building and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the owner's project requirements. 2. The process of checking the performance of a building against the owner's goals during design, construction, and occupancy. At a minimum, mechanical and electrical equipment are tested, although much more extensive testing may also be included. requirement and scopes of activities listed in the LEED v4 Reference guide there is nothing associated with commissioning of such kind of equipment as well as any manufacturing and production processes.
In that direction is our intend to reply to the owner, but if there are some other statement, requirement or concept related to LEED, please give us a kind of statement about or a direction where to look for guidance.
Thanks

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Feb 26 2017
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