An Introduction to Commissioning

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					 An Introduction
        to
COMMISSIONING
         Presented
            by

Robert R. Somers II, P.E.
 2rw Consultants, Inc.
    October, 2002

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Definition


 Commissioning:

     Systematic process to define,
     document, achieve and verify
     building systems performance
     objectives.
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Commissioning is NOT:

  Testing, Adjusting, and Balancing
  Performance Verification Alone

  Limited to HVAC Systems

  Routinely Included in Design

   Professional Services


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Commissioning Tasks
  Planning
  Documentation

  Coordination

  Review

  Verification

  Training

  Monitoring
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Commissioning Team
    Owner
     –   Space Occupants
     –   Administrative Staff
     –   Operating & Maintenance Personnel
    Commissioning Authority
    Design Professionals (Architect & Engineers)
    Construction Manager
    General Contractor
    Sub Contractors
    Equipment Suppliers
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Commissioning Authority Qualifications


    Technical Expertise
    Communication Skills

    Organization

    Independent of Design &

     Construction Teams

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Advantages of Commissioning
    Define & Meet Owner’s Goals
    Reduce Number of Change Orders
    More Accurate Documentation
    Better Building Performance
    Greater Occupant Comfort
    Improved Energy Efficiency
    Longer System Life
    Reduced Maintenance
    Improved Employee Training       8
Commissioning Economics
    0.5 to 3% of Total Constructions Cost
             –   Function of Systems’ Complexity & Extent of
                 Services
    1.5 to 6% of Mechanical System Cost
    1 to 3% of Electrical System Cost (Source: Commercial
     Energy Systems)
    Operating Costs: 8 to 20% Below Non-
     Commissioned Buildings (Source: Kennett, NIBS)
    Whole Building Commissioning: $0.20 to $1.00 Per
     Square Foot

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Recommissioning Economics

    Recommissioning HVAC Systems: $0.10 to $0.30
     Per Square Foot (Source: Rebuild America)
      – Simple Payback: 0.3 to 1.6 years




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Impediments to Commissioning

   Additional Construction Costs

   Delay in Achieving Savings

   No Perceived Need



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References
    American Society of Heating, Refrigerating, and Air
     Conditioning Engineers (ASHRAE)
      –   www.ashrae.org
    Associated Air Balance Council (AABC)
      –   www.aabchq.com
    A Practical Guide for Commissioning Existing Buildings
      –  Portland Energy Conservation, Inc. and Oak Ridge National
         Laboratory
      –  eren.ed.ornl.gov/commercialproducts/retrocx.htm
    Building Commissioning Association (BCA)
      –  www.bcxa.org
    California Commissioning Collaborative
      –   www.cacx.org
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References
    Federal Energy Management Plan (FEMP)
     –   www.eren.doe.gov/femp/techassist/bldgcomgd.html
    National Institute of Building Sciences
     –   www.nibs.org
    Portland Energy Conservation Inc. (PECI)
     –   www.peci.org
    Rebuild America
     –   www.rebuild.gov/productservices/sc_bldgcomm.htm




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