Design-Phase Commissioning. Glenn Hansen, P.E., Senior Engineer PECI

Transcription

1 Design-Phase Commissioning Glenn Hansen, P.E., Senior Engineer PECI November 13, 2013

2 Overview Background Applicability Required qualifications Process Checklists 2

3 Background CCC initiated and helped fund project SCE funded and supported CASE development CASE development team: Glenn Hansen, Cindy Strecker, Matt Tyler, Beth Littlehales, all with PECI Subcontractor: Karl Stum, Summit Building Engineering Intent: To improve compliance with existing Title 24 Part 6 energy code requirements that leads to designs that are constructible and functional that deliver anticipated energy savings. 3

4 Background - What is Building Commissioning Commissioning: a quality assurance process that spans the entire design and construction process.. Includes verifying and documenting that building systems are: Design Planned and designed properly Review Installed and tested properly Operated and maintained properly Reference: CALGreen Description California Green Buildings Standards Code, Title 24, Part 11.

5 Background - Filling in the Design-Phase Commissioning Gap ASHRAE Guideline 0 CALGreen 2010 IECC / IGCC LEED 2009 Enhanced Cx Owner's Project Requirements Cx Plan Basis of Design Cx in Construction Documents Construction Checklists Design Review Functional Performance Testing Documentation and Training Final Cx Report Post Occupancy Cx Was omitted from CALGreen

6 Background - Traditional Design Review QC / QA Checks Design conforms to project requirements Documents are clear and complete Documents are free from significant error 6

7 Background - Benefits of Traditional Design Review Reduced Cost & Time Fewer construction problems and corrective action needed Lower number of significant change orders Less administrative time issuing RFIs and COs Minimize delays associated with resolving deficiencies Quality Building Has fewer operational problems Operates as intended Is easier to maintain Has lower operating cost 7

8 Background - Energy Code Design Review What s Checked Mandatory, Prescriptive or Performance path energy measures are reflected in design documents Cxing and Acceptance Testing requirements are reflected in design documents Benefits - Energy Savings Increase compliance with Title 24 energy requirements Lower energy using buildings

9 Background - Drivers for Energy Code Design Review U.S.DOE Energy Code Compliance benchmark tied to ARRA funding (90% compliance by 2017) Cost effective opportunity Adoption of carbon policies and drive to net zero buildings

10 Background - Stakeholder Input MEP Designers General support for the design review Currently doing some form of internal plans check Concern with added complexity to an already complex compliance process Commissioning Providers Design review is part of successful commissioning Concern with qualifications of the Design Reviewer

11 Background - Stakeholder Input Owners Mixed experience with commissioning Value is varied based on who is the commissioning authority (CA) (process, tech. skill, communication) Concern of added coordination time and cost Code Officials No additional review or compliance checks Single point of sign off by Design Reviewer

12 Background - Guiding Principals Effective not overly burdensome Practical targets items with most impact Effort and cost scalable to project size Integrated with AT and CALGreen Cx Enforceable Incrementally improved in future code cycles Drive market adoption and result in more effective delivery over time.

13 Background - CASE Savings Estimate OL Office Large OS Office- Small RE Restaurant RL Retail SC School CZ Elec Gas Elec Gas Elec Gas Elec Gas Elec Gas 3 4.6% 9.4% 4.8% 4.1% 1.6% 1.0% 2.2% 10.5% 2.5% 6.4% 6 4.4% 9.6% 4.6% 3.3% 1.9% 0.6% 2.5% 9.6% 2.8% 5.4% % 9.5% 5.1% 3.8% 1.8% 0.7% 2.6% 10.1% 3.4% 5.6% % 9.2% 5.2% 3.5% 1.6% 1.1% 2.4% 8.9% 3.3% 6.2% % 8.7% 5.4% 2.7% 1.5% 1.5% 2.3% 6.9% 2.8% 5.4% Ave. 4.3% 9.3% 5.0% 3.5% 1.7% 1.0% 2.4% 9.2% 3.0% 5.8% Percent savings of total building energy use CASE Report Link: 18_workshop/review/2013_CASE_Design_Phase_Cx_ pdf

14 Applicability - Design Review for All Buildings Design Review in all nonresidential buildings Mandatory for projects permitted after 1/1/14 Applies equally for prescriptive or performance compliance paths Section 120.8(d) of the 2013 Building Energy Efficiency Standards Section 12.4 of the 2013 Nonresidential Compliance Manual 14

15 Applicability - Commissioning Added to Title 24 part 6 Requirements: Owner s Project Requirements (OPR) Basis of Design (BOD) Design-Phase Review Commissioning measures shown in construction documents Commissioning Plan Functional Performance Testing Documentation and Training Commissioning Report Design-Phase Review required for all buildings, while commissioning is required for buildings >10,000sq.ft. 15

16 Applicability - Integration with Acceptance Testing 16

17 Design Reviewer Qualifications - Minimum Requirements Typically - Licensed Professional Engineer HVAC Systems Size Qualified reviewer Simple <10,000 sq.ft. Engineer-of-record (self-review), OR Contractor (if engineer-of-record not required) Simple 10-50,000 sq.ft. Qualified in-house engineer with no project involvement, OR third party engineer Simple >50,000 sq.ft. Third party design engineer Complex Any size Third party design engineer 17

18 Definitions - Simple vs. Complex HVAC Simple HVAC Systems: Unitary or packaged equipment that serve one zone Two-pipe heating only systems serving one or more zones Complex Mechanical Systems: Fan systems serving multiple zones (VAV) Built-up air handler systems Hydronic or steam heating systems Hydronic cooling systems 18

19 Process Design Permitting Construction Programming Schematic Design Design Development Construction Documents Permit Application Plan Check Building 10,000 ft 2 Building >10,000 ft 2 Design Review Kickoff Meeting Performance Path Compliance Forms Acceptance Testing Commissioning & Acceptance Testing Design Review Completed Checklists Certificate of Occupancy

20 Early Design Influence - Early involvement generates greatest impact

21 Design Review Kickoff Meeting Occurs during early design In-person meeting Project owner Design team Mechanical Electrical Architect Commissioning coordinator Design reviewer 21

22 Design Review Kickoff Meeting Topics Project coordination Project schedule Project scope OPR & BOD Design elements and assumptions HVAC system selection Code compliance path Introduction of design review checklists and highlight appropriate sections Recommend best practice energy efficiency measures 22

23 Design Review Kickoff Checklist NRCC-CXR-01-E (1 page) General Info xxx Checklists issued Reviewer quals Attendees Reference Documents Topics discussed 23

24 Design Review Occurs around 90% CD completion (typically pre permit set) Timing and documents (plans and specs) are discussed at Design Review Kick-off Meeting 24

25 Design Review Checklists - Certificate of Compliance Doesn t encompass all T24 energy code measures Selected based on experience of team members or published reports of commonly excluded or non functional measures Includes best practice energy measures Current format relies on use of Notes section Will be updated as future energy measures are added to Title 24 Part 6 Future performance path compliance simulation software may automatically generate checklists for the exceptional code measures 25

26 Design Review Checklists - NRCC-CXR-02-E: General (7 pages) Envelope Lighting Daylight Area Daylight Controls Outdoor Lighting Controls & Equipment Service Hot Water HVAC Design HVAC Zoning Controls DCV Economizers Duct Design Acceptance & Commissioning 26

27 Design Review Checklists -NRCC-CXR-03-E: Simple HVAC (1 page) Fan System Controls 27

28 Design Review Checklists - NRCC-CXR-04-E:Complex HVAC (5 pages) Fan Systems Supply Air reset Heat Rejection Equipment Chillers & Boilers Hydronic Systems Pumping Hydronic Heat Pump 28

29 Checklist - Reviewer & Designer Interaction Design Reviewer: Yes, Complies Does Not Comply Consider Better Practice Designer Response: Complies Will Include in Next Draft Not Included State Reason 29

30 Design Review Completion - NRCC CXR-05-E: Final Sign-off (1 page) Owner / Owners Representative Designer(s) Design Reviewer 30

31 Summary of Checklists Design Review Kickoff Meeting Design Review 01: Design Review 02: General (non-hvac) 03: Simple HVAC 04: Complex HVAC 05: Final Sign-off 31

32 CCC Outreach & Training Resources FAQ Online training presentations Reference Guide 32

33 Thank You! 33