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High Performance Buildings 2007

Paul McCown, PE, CxA, LEED AP, CEM SSRCx, LLC. High Performance Buildings 2007. Commissioning for LEED Certification. True or False?. Commissioning requirements for LEED-NC 2.2, LEED-CS 2.0 and LEED-CI 2.0 are nearly identical. True

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High Performance Buildings 2007

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  1. Paul McCown, PE, CxA, LEED AP, CEM SSRCx, LLC HighPerformanceBuildings2007 Commissioning for LEED Certification

  2. True or False? • Commissioning requirements for LEED-NC 2.2, LEED-CS 2.0 and LEED-CI 2.0 are nearly identical. • True • It is possible to achieve the Enhanced Commissioning Credit if the CxA is hired after design is complete. • True

  3. True or False? • Different entities can provide commissioning services to fulfill the LEED scope if directed by a qualified CxA. • True • Commissioning Authorities are the smartest guys in the room.

  4. USGBC’s Mission: Promote the design and construction of buildings that are environmentally responsible, profitable, and healthy places to live, work and learn. • The organization’s activities… • Integrate building industry sectors • Lead market transformation • Educate owners and practitioners

  5. Leadership in Energy and Environmental DesignBuilding Rating Systems LEED-NC: LEED for New Construction and Major Renovations/Additions (released 2004) LEED-EB: LEED for Existing Buildings (released 2004) LEED-CI: LEED for Commercial Interiors (released 2004) LEED-CS: LEED for Core and Shell (released 2006) LEED-H: LEED for Homes (pilot) LEED-ND: LEED for Neighborhood Developments (pilot) LEED-S: LEED for Schools (not yet released)

  6. LEED-NC Overview • Credit Breakdown: • 7 Prerequisites • Certified 26 – 32 • Silver 33 – 38 • Gold 39 – 51 • Platinum 52 - 69

  7. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Intent: Verify that the building energy systems are installed, calibrated and perform according to the owner’s project requirements (OPR), basis of design (BOD), and construction documents. • HVAC&R systems and controls • Lighting and daylighting controls • Domestic hot water systems • Renewable energy systems (wind, solar, etc.)

  8. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (1): • Designate a CxA to lead, review and oversee the commissioning process activities. • Experience on 2 projects • Not directly responsible for design or construction • Report directly to Owner

  9. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (2): • Review OPR and BOD documents for clarity and completeness. Discussion – Who develops? What is your experience? Standards?

  10. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems OPR Components: • Building use and use by space • Goals (energy, environment, etc.) • IEQ – lighting, temperature ranges, acoustics • Equipment and System Expectations • O&M and Training Expectations BOD Components: • MEP Narrative • Design assumptions • Space use • Diversity • Redundancy • Climatic data • Standards

  11. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (3): • Develop a commissioning specification. Discussion – Spec Section? Sub-Consultant Requirements?

  12. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (4): • Develop a commissioning plan. Discussion – Components? Remember OPR, BOD, Construction Documents

  13. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (5): • Verify installation and performance of equipment and systems. Discussion – Who verifies what?

  14. EA Prerequisite 1: Fundamental Commissioning of the Building Energy Systems Scope (6): • Complete a summary commissioning report. Discussion – What about outstanding items?

  15. EA Credit 3: Enhanced Commissioning Intent: Begin the commissioning process early during the design process and execute additional activities after systems performance verifications is complete.

  16. EA Credit 3: Enhanced Commissioning Scope (1): • Independent CxA. • Must perform reviews, can oversee other requirements • Not an employee of the design firm • Not connected to the contractor in any way Discussion?

  17. EA Credit 3: Enhanced Commissioning Scope (2): • Design Reviews • OPR, BOD • mid CDs • Back-check review comments Discussion – What if CDs are complete?

  18. EA Credit 3: Enhanced Commissioning Scope (3): • Submittal Reviews • Review for compliance with OPR, BOD • Concurrent with A/E reviews Discussion – What are you looking for?

  19. EA Credit 3: Enhanced Commissioning Scope (4): • Systems Manual • Information for understanding system function and optimal operation • More than just O&M and blank Cx Plan Discussion – What are you including?

  20. EA Credit 3: Enhanced Commissioning Scope (5): • Owner Training • Review training plan • Verify that training takes place and is effective Discussion – What works?

  21. EA Credit 3: Enhanced Commissioning Scope (6): • Warranty Review • Meet with O&M staff and occupants • Include a plan for resolution of outstanding Cx-related activities Discussion – We told you so…

  22. LEED-CI • No design reviews • All else same

  23. LEED-EB Overview • Credit Breakdown: • 14 Prerequisites (double LEED-NC) • Certified 32 – 39 • Silver 40 – 47 • Gold 48 – 63 • Platinum 64 - 85

  24. EA Prerequisite 1: Retro-Cx Intent – Verify that fundamental building systems and assemblies are performing as intended to meet current needs and sustainability requirements. • Building Operation Plan – means for execution

  25. EA Prerequisite 1: Retro-Cx Requirements – Verify installation, calibration, and operation for functionality and efficiency of the following: • Heating, cooling, and humidity control • Lighting • Safety • Controls

  26. EA Prerequisite 1: Retro-Cx Building Operation Plan components: • Use – occupancy and schedule by space type • Static system requirements • Functional system requirements

  27. EA Prerequisite 1: Retro-Cx Performance Testing Plan (Cx Plan) components: • Part A - Inspection • Part B – Functional Verification (data logging)

  28. EA Prerequisite 1: Retro-Cx Space Temperature : • Part A – Inspection • Measure temperature and check vs space setpoint. Take a representative sample*. • Part B – Functional Verification • Trend space temperature in various locations *sample – greater of 10% minimum or 5 spaces

  29. EA Prerequisite 1: Retro-Cx Space Pressurization (pick A or B): • Option A – Instantaneous Measurements • Measure and document space pressurization requirements for each space-use type. • Option B – Trending Measurements • Trend “space” pressure to show compliance (follow regulatory standards if applicable) How? – Discussion -

  30. EA Prerequisite 1: Retro-Cx Building Envelope: • Inspection (pictures are helpful) • Basic envelope integrity (no holes, gaps) • Doors and door jams • Windows and window frames • Backdraft and mechanical dampers when fans are off • Innovation Credit opportunity – Conduct an infrared building scan once every five years.

  31. EA Prerequisite 1: Retro-Cx Heating / Cooling Systems: • Option A – Instantaneous Measurements • Design and conduct performance testing regarding HVAC systems sequence of operation. • Option B – Trending Measurements • Trend HVAC system components to show compliance How? – Discussion -

  32. EA Prerequisite 1: Retro-Cx Heating / Cooling Systems: • Boilers, Chillers, Cooling Towers • Air Handling Units • Supply Temperature Reset (air, water) • Variable Volume Modulation (air, water) • Economizer control

  33. EA Prerequisite 1: Retro-Cx Water Systems: • In conjunction with other LEED-EB Credits • WE Prereq 1: Min. Water Efficiency • WE Prereq 2: Discharge Water Compliance • Must be included in Building Operations Plan and Cx Plan for verification • Covers ALL water consuming equipment

  34. EA Prerequisite 1: Retro-Cx Lighting Systems: • Must be included in Building Operations Plan and Cx Plan for verification • Indoor – trend or otherwise verify operating hours by space type. • Outdoor – trend or otherwise verify operating hours by space type.

  35. EA Prerequisite 1: Retro-Cx Building Controls Systems: • Must be included in Building Operations Plan and Cx Plan for verification • Verify controls operation for all applicable systems and equipment – schedules, sequences, sensors, etc.

  36. EA Prerequisite 1: Retro-Cx Synergies with other LEED-EB Credits: • WE Prereq 1: Min. Water Efficiency • WE Prereq 2: Discharge Water Compliance • EA Prereq 2: Min. Energy Performance • EA Credit 1: Optimize Energy Performance • EA Credit 3.3: Building Systems Monitoring • EA Credit 5.1-3: Performance Measurement • IEQ Prereq 1: Outside Air and Exhaust • IEQ Credit 1: Outside Air Delivery Monitoring • IEQ Credit 7.1-2: Thermal Comfort

  37. Questions and Answers Thank You!

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