Transcript Connecticut`s New Energy Code - Connecticut Chapter of ASHRAE

Connecticut’s New Energy Code
Connecticut ASHRAE Tech Session
October 13, 2011
Frederick F. Wajcs, Jr.
Senior Energy Engineer
Connecticut Light and Power
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New Energy Code
2009 International Energy Conservation
Code (IECC)
 Effective October 7, 2011
2009 International Residential Code (IRC)
 Anticipated in Second Half 2012
201x New State Building Code
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Reasons for New Code
 Improve the energy efficiency of buildings
 Reduce carbon emissions
 Requirement for receipt of stimulus funds
(including achieving 90% compliance by
December 2017)
www.energycodes.gov/arra/compliance_checklist.stm
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Key Areas
 Applicability
 Construction document information
 Technical requirements
 Completion requirements
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Applicability
 New construction
 Additions, alterations, renovations or repairs
to an existing building, building system or
portions thereof
 Change in space occupancy or use that
increases energy demand
 Change from one lighting use to another
 Change in space conditioning
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Construction Document Information
Specifically stated in Section 103.2 (Administration)
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Insulation materials and their R-values
Fenestration U-factors & Solar Heat Gain Coefficients (SHGC)
Area-weighted U-factors and SHGC calculations
Mechanical system design criteria
Mechanical and service water heating system and equipment
types, sizes and efficiencies
Economizer description
Equipment system and controls
Fan motor horsepower and controls
Duct sealing, duct and pipe insulation and location
Lighting fixture schedule with wattage and control narrative
Air Sealing details
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Other Compliance Information
for Commercial Buildings
 Name of code for compliance
 Heating and cooling load calculations
(max. 72ºF heating, min. 75ºF cooling)
 Interior lighting power allowance and
connected power
 Exterior lighting power allowance and
connected power
 Details necessary for verifying compliance
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Technical Requirements
 Mandatory
 Prescriptive
 Performance
 Commercial project must comply with either
2009 IECC in entirety or ASHRAE/IESNA
Standard 90.1-2007 in entirety
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Commercial Technical Requirements
Chapter 5 - Envelope
 Vertical fenestration 40% maximum of above
grade wall
 Skylight 3% maximum of roof area
 Insulation and fenestration criteria
 Opaque wall insulation R-value or U-factor
 IC rated luminaires in thermal envelope and
sealed between housing and wall/ceiling
covering.
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Commercial Technical Requirements
Chapter 5 – Envelope Continued
 Air Leakage
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Window and door assemblies
Curtain wall, storefront glazing and entrance
doors
Sealing building envelope
Dampers on air intake and exhaust openings
Loading dock weatherseals
Vestibules
Plenum insulation and sealing
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Additional / Different Requirements
Under Standard 90.1-2007
 Replacement fenestration needs to comply if
>25% of total existing fenestration area
 Skylight 5% maximum of roof area
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Commercial Technical Requirements
Chapter 5 - Mechanical
 Calculated heating and cooling loads for equipment
sizing
 Equipment performance
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Air cooled package equipment more efficient
Chiller application & ratings changed
 Thermostatic control for each zone
 Heat pump control of supplementary electric-
resistance heat
 Automatic setback, shutdown and shutoff controls
 Fan horsepower limitation, hp/cfm
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Commercial Technical Requirements
Chapter 5 – Mechanical Continued
 Duct and plenum insulation and sealing
 High pressure duct and plenum leak testing
 Pipe insulation
 Radiant heating systems for outside building
controlled by occupancy sensor or time
switch
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Commercial Technical Requirements
Chapter 5 – Mechanical Continued
 Automatic or readily accessible manual
switch on service hot water circulating pumps
 Snow melt system controls
 Readily accessible on-off switch on pool
heaters without adjusting set point
 Time switched on pool heaters and pumps
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Commercial Technical Requirements
Chapter 5 – Mechanical Continued
 Economizers
 Speed control on VAV fans ≥10 hp
 Demand control ventilation for spaces >500
sq. ft. and 40 people per 1,000 sq. ft.
 Energy recovery on fan systems ≥5,000 cfm
and minimum outside air ≥70% of supply air
 Automatic supply air temperature reset
controls on multi-zone systems
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Commercial Technical Requirements
Chapter 5 – Mechanical Continued
 Isolation of cooling tower on water loop heat
pump systems
 Two position valves on water loop heat
pumps
 Pump, boiler and chiller isolation
 Automatic speed control on cooling tower
fans ≥7.5 hp
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Commercial Technical Requirements
Chapter 5 – Mechanical Continued
 HVAC system completion
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System balancing
Operation manuals, complete with written
narrative of how each system is intended to
operate
Maintenance manuals
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Additional / Different Requirements
Under Standard 90.1-2007
 Automatic shutdown control for ventilation fans >0.75
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Single zone VAV for AHU ≥5 hp
HVAC system commissioning for conditioned area
>50,000 sq. ft.
Optimum start controls for systems >10,000 cfm
Speed control on pump motors >50 hp
Efficiency requirements for SPVAC & SPVHP
Duct & pipe insulation requirements
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Additional / Different Requirements
Under Standard 90.1-2007
 Voltage drop design criteria for conductor
sizing
 Record power drawing submittal to owner
 Complete narrative of how each power
system is intended to operate
 Power operations manuals and maintenance
manuals for each piece requiring
maintenance
 Calculated service water load
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Commercial Technical Requirements
Chapter 5 – Service Water heating
 Equipment performance
 Temperature controls
 Heat traps
 Pool covers
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Commercial Technical Requirements
Chapter 5 – Electrical
 Each enclosed area to have at least one
manual lighting control
 Manual control to allow ≥50% reduction in
lighting load
 Automatic lighting shutoff for buildings ≥5,000
sq. ft.
 Daylight zones to have independent controls
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Commercial Technical Requirements
Chapter 5 – Electrical Continued
 Master lighting switch for hotel / motel /
boarding housing sleeping units
 Automatic exterior lighting control
 IC-rated and labeled recessed luminaires in
building thermal envelope
 All recessed luminaires sealed between
housing and wall / ceiling covering
 Tandem wiring
 Exit signs <5 watts per side
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Commercial Technical Requirements
Chapter 5 – Electrical Continued
 Total connected interior lighting power must
be less than the calculated interior lighting
power
 Total connected exterior lighting power must
be less than the calculated exterior lighting
power (Separate for tradable and nontradable surface)
 Exterior building grounds luminaires >100
watts must have lamp efficacy >60 l/w
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Additional / Different Requirements
Under Standard 90.1-2007
 Lighting system replacement in space shall comply
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with lighting power density
Direct replacement of existing control device shall
comply with new control requirement
Automatic lighting control required in defined spaces
Separate control required for defined lighting
Lighting power densities for building types and space
types
Base site allowance replaced 5% exterior lighting
additional unrestricted allowance (in 2008
supplement).
Record drawing submittals to owner
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Completion
 Confirm installation is per approved drawings
 Provide documentation that required controls
are installed
 Provide documentation that connected
lighting power is less than calculated lighting
allowance
 Confirm submittals have been provided
 Received all required inspections
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Additional Information on web
 www.ctashreae.org under Technology
Transfer
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Table of 2006 IECC, 2009 IECC and 90.12007 with 2008 supplement requirements
Table of 90.1-2001, 90.1-2004 and 90.1-2007
requirements
 www.aiact.org under Building Performance &
Regulations Committee
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Compliance Documentation Spreadsheets
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Connecticut Energy Efficiency Fund
 Energy Opportunities program for commercial
retrofit
 Energy Conscious Blueprint program for
commercial new construction and equipment
replacement
 www.ctenergyinfo.com
 1-877-WISE-USE (1-877-947-3873)
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THANK YOU!
Questions?
Fred Wajcs
Conservation and Load Management
860-665-3286
[email protected]
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