2012 IECC® for SERBCA
Based on the 2012 International Energy
Conservation Code
Copyright 2008,
International Code Council
Major Changes In 2012 IECC
1. Increased R-value in exterior walls for most zones
was R-13 in climate zone 3 now R-20
2. Maximum air infiltration rate for fenestration reduced
for storefront glazing
was 0.3 cfm/ft2 at 75 Pa
now 0.06 cfm/ft2 at 75 Pa
3. Maximum area of vertical fenestration reduced from 40% to
30% (certain daylight zones may have 40% max. area)
4. Maximum U-factor for fenestration reduced
In climate zone 3 was 0.60 now 0.46 for fixed glazing
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International Code Council
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Changes to 2012 IECC continued
5. Air barrier construction identified
Fifteen materials are deemed to comply
Can be inside or outside of the building thermal envelope
6. Blower test option for Commercial (Required for Residential)
0.4 cfm/ft2 at 75 Pa for commercial
7. Blower test required for Residential
was 7ACH at 50 PA
now 3 or 5ACH at 50 PA depending on climate zone
Copyright 2008,
International Code Council
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Changes to 2012 IECC continued
8. Duct tests required for Residential only if not entirely within
the building envelope (4 cfm per 100 sf of conditioned area
at 25 Pa)
9. Economizer requirements increased
Now required in all climate zones except 1A and 1B
was exempted from 1A, 1B, 2A, 7 and 8
Now required for units greater than 33,000 BTU/h
was required for units greater than 54,000 BTU/h
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International Code Council
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Changes to 2012 IECC continued
10. Must choose one of three options:
Greater HVAC efficiency (C406.2)
Greater Lighting load efficiency (C406.3) or
Onsite renewable energy (C406.4)
11. System commissioning is now mandatory
with exceptions
Copyright 2008,
International Code Council
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Commissioning Requirements
International Energy Conservation Code
(IECC®) 2012Edition
Copyright 2008,
International Code Council
Definitions
 APPROVED AGENCY
 An established and recognized agency regularly
engaged in conducting tests or furnishing
commissioning services, where such agency has
been approved.
 APPROVED
 Acceptable to the code official or authority having
jurisdiction.
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International Code Council
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Definitions
 BUILDING COMMISSIONING
 A process that verifies and documents that the
selected building systems have been designed,
installed, and function according to the owner’s
project requirements and construction documents,
and to minimum code requirements except as noted
herein.
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International Code Council
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Commissioning in 2012 IECC
 Section 408.2 systems exempt from commissioning:
 Mechanical systems total capacity less than 480,000 Btu/h
cooling and 600,000 Btu/h heating
 Simple HVAC systems serving dwelling units and sleeping
units
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International Code Council
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Commissioning in 2012 IECC
 Verifies that the building has been built and is operating as
designed, includes:
 Construction documents must provide for
commissioning (Registered design professional
responsible)
 Commissioning plan must be developed by registered
design professional or approved agency
 HVAC system adjusting and balancing
 Functional performance testing of equipment, controls
and economizers
 Lighting system functional testing
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International Code Council
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Commissioning in 2012 IECC
 Reports and documents required:
1. Commissioning plan
2. Preliminary commissioning report prior to final
mechanical inspection
3. Documents required within 90 days of certificate of
occupancy
 Drawings
 Manuals
 System balancing report
 Final Commissioning report
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International Code Council
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Commissioning Plan
1. A narrative description of the activities that will be accomplished
during each phase of commissioning, including the personnel
intended to accomplish each of the activities
2. A listing of the specific equipment, appliances or systems to be
tested and a description of the tests to be performed
3. Functions to be tested, including, but not limited to calibrations
and economizer controls
4. Conditions under which the test will be performed. At a minimum
testing shall affirm winter and summer design conditions and full
outside air conditions
5. Measurable criteria for performance
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International Code Council
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Preliminary Commissioning Report
1. Itemization of deficiencies found during testing required by
Section 408 that have not been corrected at the time of
report
2. Deferred tests that cannot be performed at the time of report
preparation because of climatic conditions
3. Climatic conditions required for performance of deferred
tests
Buildings shall not receive their final mechanical inspection until
the code official receives a letter of transmittal from the
building owner acknowledging receipt of the Preliminary
Commissioning Report.
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International Code Council
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Final Commissioning Report
1.
2.
3.
Results of functional performance tests
Disposition of deficiencies found during testing,
including details of corrective measures used or
proposed
Functional performance test procedures used
during the commissioning process including
measurable criteria for test acceptance, provided
herein for repeatability
Provided to the building owner within 90 days of the
date of receipt of the Certificate of Occupancy
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International Code Council
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Code Revision Process
Who can submit a code change?
Any Interested Party
When?
For the IgCC and IECC changes must be
submitted by 1/3/2013
How?
Download code change forms from
http://www.iccsafe.org
Copyright 2008,
International Code Council
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Code Changes
Submitted
Code Changes
Posted & CD Distributed
Code Development
Hearing
New
Edition Published
I-CODE DEVELOPMENT
CYCLE
Public Hearing Results
Posted & CD Distributed
Final Action
Hearing
Public Comments
Posted & CD Distributed
Public Comments
Sought on Public
Hearing Results
Questions
Copyright 2008,
International Code Council
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