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2015 IECC UpdateFinal Presentation 8/25/2015
Copyright 2015 International Code Council 1
2015 IECC Update2015 IECC UpdateBased on the 2012 and 2015 Editionsof the International EnergyConservation Code® (IECC®)
Developed & Presented by:Andrew Klein, P.E.A S Klein Engineering, PLLC
AccreditationAccreditation
The International Code Council has been accredited asan Authorized Provider by the International Associationfor Continuing Education and Training (IACET). As a result of their Authorized Provider accreditation status, ICC
is authorized to offer IACET CEUs for its programs that qualifyunder the ANSI/IACET Standard.
You will obtain full CEUs for this course, if you activelyparticipate in the training activities and stay for the entiresession. Evidence of this will be the sign out sheet.
2015 IECC Update 2
IntroductionsIntroductions
2015 IECC Update 3
Instructor introduction Exits Cell phones & pagers Schedule & break Participant introductions
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Copyright 2015 International Code Council 2
The IECCThe IECC
2015 IECC Update 4
The International Energy Conservation Code® (IECC®) regulates the design and construction of buildings for the use and conservation of energy over the life of each building.
DescriptionDescription
2015 IECC Update 5
Assist participants in transition from the 2012 IECC tothe 2015 IECC
Include relevant changes new to the 2015 edition
Focus on the key changes
Allow for the application of these new coderequirements to the design, plan review, andinspection functions
This seminar will:
GoalGoal
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Participants will be able identify keychanges from the 2012 IECC to the 2015IECC, allowing them to apply these coderequirements to design, plan review, andinspection.
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ObjectivesObjectives Upon completion, participants will be better
able to:1. Identify the most significant differences between the
2012 IECC and 2015 IECC
2. Explain the differences between the current andprevious editions
3. Identify changes in organization and coderequirements
4. Identify newly-regulated systems and components
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Margin Markings within the 2015 (2012) I-CodesMargin Markings within the 2015 (2012) I-Codes
2015 IECC Update 8
Solid vertical lines indicate a technical changefrom the requirements of the 2012 (2009) edition.
Arrows indicate where a section, paragraph,item in a list, exception or table has been deleted.
A single asterisk [*] indicates that text or a tablehas been relocated elsewhere in the code.
A double asterisk [**] indicates that the sectionor table immediately following has been relocatedhere from a different section.
***
Prerequisite informationPrerequisite information
It is expected that seminar participants are already familiar with the 2012 IECC and its application.
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Arrangement and format of the 2015 IECCArrangement and format of the 2015 IECC
2015 IECC Update 10
1
Arrangement and format of the2015 IECCArrangement and format of the2015 IECC
Residential Building. For this code, includesdetached one- and two-family dwellings andmultiple single family dwellings (townhouses) aswell as Group R-2, R-3 and R-4 buildings threestories or less in height above grade plane.
112015 IECC Update
Arrangement and format of the2015 IECCArrangement and format of the2015 IECC
COMMERCIAL BUILDING. For this code, allbuildings that are not included in the definition of“Residential buildings.”
122015 IECC Update
2015 IECC UpdateFinal Presentation 8/25/2015
Copyright 2015 International Code Council 5
IECC Commercial Compliance ProcessIECC Commercial Compliance Process
132015 IECC Update
ChooseA
PathIECC
Mandatory Provisions
Mandatory Provisions
ANSI/ASHRAE/IES 90.1
Building Envelope Mechanical
Power & Lighting
Add’l Eff Pkg
Total building performanceThe building energy cost
≤85% standard reference
design
Service hot water
Building Envelope
Mechanical
Lighting Other Eqmt
Service water
heatingPower
Energy Cost
Budget Method
Plan review InspectionCertificates
of Occupancy
CommissioningConstruction
PrescriptivePath
PerformancePath
PrescriptivePath
PerformancePath
IECCResidential Compliance Process
IECCResidential Compliance Process
142015 IECC Update
Must the project comply with the
IECC?
Air Leakage&
Fenestration U-factor & SHGC&
Mechanical Systems&
Electrical Power & Lighting
Building Thermal Envelope
Simulated Performance AlternativeR-Value U-factor Total UA
Plan Review Field Inspection
Mandatory Provisions
Prescriptive PathAlternativePerformancePaths
Energy Rating Index
C/R 104 InspectionsC/R 104 Inspections Explicit ability to designate agent (C/R 104.1)
New wording to decrease liability
Newly-required rough-in inspections (C/R 104.2):C/ R 104.2.1 Footing and Foundation Inspection
C/R 104.2.2 Framing and Rough-in Inspection
C/R 104.2.3 Plumbing Rough-in Inspection
C/R 104.2.4 Mechanical Rough-in Inspection
C104.2.5 Electrical Rough-in Inspection
R 104.2.5 / C104.2.6 Final Inspection
Prohibits inspection reports from entities affiliated with design or construction (C/R 104.4)
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Copyright 2015 International Code Council 6
C/R 301.4 Tropical climate zoneC/R 301.4 Tropical climate zone Area between the Tropic of Cancer &
Tropic of Capricorn
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Recognizes the unusually constantand unique climate of this region
R401.2.1 -Tropical Zone
Compliance
R401.2.1 Tropical zoneR401.2.1 Tropical zone Residential buildings in the tropical zone at elevations < 2,400 ft above
sea level are deemed to comply with Ch 4 [RE] where:1. ≤ ½ occupied space is air conditioned
2. Occupied space is not heated
3. Renewable energy source supplies ≥ 80 % service water heating energy
4. Glazing in conditioned space has SHGC ≤ 0.40 or overhang with PF ≥ 0.30
5. Permanently installed lighting meets §R404
6. Exterior roof complies with Table C402.3 or the roof/ceiling insulated ≥ R-15 Roof surfaces have a slope ≥ ¼ in/ft with no water accumulation areas
7. Operable fenestration provides ventilation area ≥ 14 % of floor area in each room or equivalent mechanical ventilation
8. If exterior bedroom walls face 2 directions, each have operable fenestration Interior bedroom doors capable of being secured open
9. A ceiling fan (or rough-in) provided for bedrooms and largest space not a bedroom
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C/ R 303.1.4.1 Insulated sidingC/ R 303.1.4.1 Insulated siding Requires R-value of insulated siding to be
determined in accordance with ASTM C1363
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Where insulated siding isused for the purpose ofcomplying with thecontinuous insulationrequirements of TableR402.1.2, themanufacturer’s labeledR-value for insulatedsiding shall be reducedby R-0.6.
R402.1.3 R-value computationR402.1.3 R-value computation
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Copyright 2015 International Code Council 7
C402.1.2 Equipment buildingsC402.1.2 Equipment buildings
Separate buildings not more than 500 ft2
Intended to house electronic equipment
Heating system capacity≤ 17,000 Btu/hr
Thermostat set point ≤ 50°F
Max avg wall and roof U-factor (0.2 or 0.12)
Roof provisions ofClimate Zone 1
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NewExempt from Envelope Provisions:
Opaque Thermal Envelope Insulation RequirementsOpaque Thermal Envelope Insulation Requirements Values remain mostly unchanged from 2012 EditionTable C402.1.3 / R402.1.2 Insulation component R-value-
based method
Table C/R402.1.4 Assembly U-factor, C-factor or F-factor-based method
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C402.1.4.1 Thermal resistance of cold-formed steel wallsC402.1.4.1 Thermal resistance of cold-formed steel walls Method to determine effective R-values for steel
stud wall assemblies
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New
U = 1/[Rs + (ER)](Equation 4-1)where:
RS = Cumulative R-value of wall components along the path of heat transfer (excludes cavity insulation & steel studs)
ER = Effective R-value of cavity insulation with steel studs
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Copyright 2015 International Code Council 8
C402.1.5 Component performance alternativeC402.1.5 Component performance alternative Alternative component performance path for
commercial buildings allows trade-offs among building envelope components.
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A + B + C + D + E ≤ Zero (Equation 4-2)
Where:
A = Sum of the (UA Dif) valuesB = Sum of the (FL Dif) valuesC = Sum of the (CA Dif) valuesD = (DA · UV) - (DA · UWall), but not less than zeroE = (EA · US) - (EA · URoof), but not less than zero
No Changes to Fenestration ExemptionsNo Changes to Fenestration Exemptions R402.3.3 Glazed fenestration exemptionUp to 15 ft2 glazed fenestration per dwelling unit
Exempt from U-factor and SHGC requirements in Section R402.1.2
Not for U-factor or Total UA alternative approaches
R402.3.4 Opaque door exemptionOne side-hinged opaque door assembly up to 24 ft2
Exempt from U-factor requirement in Section
Not for U-factor or Total UA alternative approaches
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R 402.2 Specific Insulation Requirements (Prescriptive)R 402.2 Specific Insulation Requirements (Prescriptive)No changes R402.1.5 Total UA alternative
R402.2.1 Ceilings with attic spaces If uncompressed over top plate of wall,
R-30 substitutes for R-38; R-38 for R-49
R402.2.2 Ceilings without attic spaces500 ft2 (up to 20%) reduction in insulation to R-30
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R402.2.7 Walls with partial structural sheathingR402.2.7 Walls with partial structural sheathing
Where Section R402.1.2 requires c.i. and structural sheathing covers ≤ 40 % of the gross area of all exterior wallsFor consistent total thickness, c.i. may be reduced by
up to R-3 on covered by structural sheathing
NOT for U-factor or total UA alternative approaches
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R402.5 Maximum fenestration U-factor and SHGCR402.5 Maximum fenestration U-factor and SHGC
No Changes, but important
Using tradeoffs from §R402.1.5 or §R405 Area-weighted average max
fenestration U-factor0.50 in CZ 1 – 3 (§R405 only)
0.48 in CZs 4 & 5 (vertical)
0.40 in CZs 6 – 8 (vertical)
0.75 in CZ 4 – 8 (skylights)
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R402.2.3 Eave baffleR402.2.3 Eave baffle Installed adjacent to soffit and eave vents
Permitted to be any solid material
For air-permeable insulations
In vented attics
Maintain an opening≥ size of the vent
Extend over the topof the attic insulation
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R402.2.8 FloorsR402.2.8 Floors Floor framing-cavity insulation must maintain
permanent contact with the underside of thesubfloor decking
New Exception:Floor framing-cavity insulation is permitted to be in
contact with the topside of sheathing or c.i.Combined with insulation that ≥ wood frame wall R-value in
Table 402.1.2
Extends from the bottom to top of all perimeter floor framingmembers
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Mass Walls - DefinitionMass Walls - Definition
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C402.2.3 - New criteria for “mass walls”≥ 35 psf of wall surface area≥ 25 psf of SA
if material density ≤ 120 pcf
Heat capacity >7 Btu/(ft2 ·°F)Heat capacity > 5 Btu/(ft2 ·°F)
if material density ≤ 120 pcf
R402.2.5 - New criteria for “mass walls”Any wall having a heat
capacity ≥ to 6 Btu/ft2 × °F
C402.4.2 Minimum skylight fenestration areaC402.4.2 Minimum skylight fenestration area
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Enclosed spaces greater than 2,500 ft2 of certain uses
Directly Under Roof
Cei
ling
s >
15
ft
OfficeLobbyAtriumConcourseCorridorStorage SpaceGymnasiumConvention CenterAutomotive Service AreaManufacturing SpaceNonrefrigerated WarehouseRetail StoreDistribution/Sorting AreaTransportation DepotWorkshop
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Copyright 2015 International Code Council 11
C402.4.2 Minimum skylight fenestration areaC402.4.2 Minimum skylight fenestration area1. Minimum skylight area to daylight zone under
skylights ≥ 3 % where all skylights have a VT of at least 0.40 –OR –
2. Minimum skylight effective aperture of 1%:
Skylight Effective Aperture =
0.85 Skylight Area Skylight VT WF
Daylight zone under skylight
Daylight responsive controls (§C402.4.2.1)
Haze Factor (§C402.4.2.2)
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(Eq. 4-4)
Table C402.4 Fenestration Maximum U-factors and SHGCsTable C402.4 Fenestration Maximum U-factors and SHGCs Table modified & many values tightened
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C402.4.3.3 / R402.3.2 Dynamic glazingC402.4.3.3 / R402.3.2 Dynamic glazing
The ratio of the higher to lower labeled SHGCshall be ≥ 2.4
Automatically controlled to modulate the amount of solar gain into the space in multiple steps
Area Weighting - Dynamic glazing considered separately from other fenestration (§C402.4.3.3)
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Copyright 2015 International Code Council 12
C402.5 Air leakage—thermal envelopeC402.5 Air leakage—thermal envelope The thermal envelope of buildings shall comply with
Sections C402.5.1 through C402.5.8, or the building thermal envelope shall be tested.
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C402.5.1 Air barriers
C402.5.2 Air leakage of fenestration
C402.5.3 Rooms containing fuel-burning appliances
C402.5.4 Doors and access openings to shafts, chutes, stairways and elevator lobbies
C402.5.5 Air intakes, exhaust openings, stairways and shafts
C402.5.6 Loading dock weatherseals
C402.5.7 Vestibules
C402.5.8 Recessed lighting
MANDATORY
Full Building Test (§C402.5)Full Building Test (§C402.5) Tested in accordance
with ASTM E 779 Air leakage rate
≤ 0.40 cfm/ft2
Must also comply w/§C402.5.5, 6 & 7
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Conducted by approved third party(where required by the code official)
A signed, written report of test results
Air leakage rate:
≤ 5 ACH (CZs 1 & 2)
≤ 3 ACH (CZs 3 – 8)
R402.4.1.2 TestingR402.4.1.2 Testing1. Close windows, doors,
fireplace and stove doors
2. Close dampers including exhaust, intake, makeup air, backdraft and flue
3. Open interior doors
4. Close and seal exterior doors for continuous ventilation systems and heat recovery ventilators
5. Turn off heating and cooling systems
6. Fully open supply and return registers
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Copyright 2015 International Code Council 13
C402.5.7 VestibulesC402.5.7 Vestibules Added exception for doors with an air curtain
Deleted exception for doors used for vehicularmovement, material handling and adjacentpersonnel doors
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Co
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of
Ber
ner
Max
air
Continuous throughout the entire building thermal envelope
May be located on the inside or outside of the building envelope or within the assemblies
The air barrier shall comply with Sections:
C402.5.1.1 C402.5.1.2
Exception: Buildings located in Climate Zone 2B
C402.5.1 Air barriersC402.5.1 Air barriers
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C402.5.1.2 Air barrier compliance optionsC402.5.1.2 Air barrier compliance options
Materials (Air Permeability ≤ 0.004 cfm/ft2)
Plywood or OSB (3/8”)
XPS or foil-back PIR insulation board (½”)
Closed-cell spray foam (1 ½, ρ ≥ 1.5 pcf)
Open-cell spray foam (4.5”, ρ = 0.4 -1.5 pcf)
Gypsum (int or ext) or cement board (½”)
Certain roof membranes
Portland cement or gypsum plaster (5/8”)
Cast-in-place and precast concrete
Fully grouted concrete block masonry
Sheet steel or aluminum
Clay or shale masonry units
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Assemblies (≤ 0.04 )
CMU coated with block filler (1x) or a paint or sealer coating (2x)
Clay or shale masonry units (≥ 4” nominal)
Portland cement, stucco or plaster (≥ ½”)
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Copyright 2015 International Code Council 14
Table R402.4.1.1Table R402.4.1.1
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Table R402.4.1.1 Air Barrier
& InsulationInstallation
p. R-34
Table R402.4.1.1 (con’t)Table R402.4.1.1 (con’t)
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Table R402.4.1.1 Air Barrier
& InsulationInstallation
p. R-34
R402.1.1 Vapor retarderR402.1.1 Vapor retarderWall assemblies in the building thermal envelopeshall comply with the vapor retarder requirementsof Section R702.7 of the InternationalResidential Code or Section 1405.3 of theInternational Building Code, as applicable.
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Copyright 2015 International Code Council 15
C402.5.3 / R402.4.4 Rooms containing fuel-burning appliancesC402.5.3 / R402.4.4 Rooms containing fuel-burning appliances Fuel-burning
appliances & their open-combustion air openings
Climate Zones 3 - 8
Isolated from remainder of building i.a.w. envelope provisions
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Direct-vent sealed combustion appliances are easy solutions
R403.7 Equipment sizing and efficiency rating R403.7 Equipment sizing and efficiency rating
Heating and cooling equipment sized i.a.w.ACCA Manual S Building loads calculated i.a.w. ACCA Manual J or
other approved heating and cooling calculationmethodologies
Efficiency rating of new & replacement heatingand cooling equipment ≥ minimum required byfederal law for the geographic location where theequipment is installed
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R403.3.3 Duct testingR403.3.3 Duct testing
Pressure differential of 0.1” w.g. across system
All registers shall be taped or sealed during test
Two ducts pressure test options1. Rough-in test:
1. Total leakage ≤ 4 ft3 / min / 100 ft2 if air handler is installed
2. ≤ 3 ft3 / min / 100 ft2 conditioned floor area
2. Post-construction test:1. Total leakage ≤ 4 ft3 / min / 100 ft2 conditioned floor area
Written, signed results report to code official
2015 IECC Update 45
Duct leakage resultsare now prescriptive
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Copyright 2015 International Code Council 16
C403.2.4.4 Zone isolationC403.2.4.4 Zone isolation Systems serving zones designed to operate or
be occupied non-simultaneously Over 25,000 ft2 floor area
Span more than one floor and are
Divided into isolation areas
(See 3 exceptions)
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C403.2.4.6 Freeze protection system controlsC403.2.4.6 Freeze protection system controls Complements
§C403.2.4.5, Snow- and ice-melt system controls
Freeze protection system controls must shut off systems when outdoor air > 40°F or when the conditions of the protected fluid will prevent freezing
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C403.2.4.7 Economizer fault detection and diagnostics C403.2.4.7 Economizer fault detection and diagnostics Air conditioners listed in Tables C403.2.3(1)
through C403.2.3(3) equipped with economizers
FDD requiredTemperature sensors
Refrigerant pressure sensors
Unit controller
Unit fault reporting
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C403.2.6.2 Enclosed parking garage ventilation controlsC403.2.6.2 Enclosed parking garage ventilation controls
Garages storing or handling automobiles
Exceptions: total exhaust capacity <
22,500 cfm & no heating or mechanical cooling
Ventilation system motor nameplate power ratio exceeding 1125 ft2/hp
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Contamination-sensing devices
Ventilation optimization controls to modulate airflow
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Ventilation systems operating < 8,000 hr / yr
Ventilation systems operating ≥ 8,000 hr / yr
C403.2.7 Energy recovery ventilationC403.2.7 Energy recovery ventilation
C403.2.8 Kitchen exhaust systemsC403.2.8 Kitchen exhaust systems
Regulates efficiency & maximum exhaust rates
Makeup ≤ 10% exhaust
Hoods > 5,000 cfmFactory-built, tested hoods
New Table C403.2.8 specifies max exhaust rates
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2015 IECC UpdateFinal Presentation 8/25/2015
Copyright 2015 International Code Council 18
C403.2.12.3 Fan efficiencyC403.2.12.3 Fan efficiency Fan efficiency grade (FEG) ≥ 67
when determined i.a.w. AMCA 205
Exceptions include:Fans with HPs ≤ 5
Fans integral to other approved equipment
Fans for emergency conditions
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C403.2.14 Refrigeration equipment performanceC403.2.14 Refrigeration equipment performance
Refrigeration equipmentperformance
Tables C403.2.14 (1) & (2):List the maximum energy use
in kWh/day
Organized by equipment type, operating mode &rating temperature
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New
C403.2.15 Walk-in & warehouse coolers & freezersC403.2.15 Walk-in & warehouse coolers & freezers Walk-in coolers, walk-in freezers,
refrigerated warehouse coolers and refrigerated warehouse freezers
Requirements include:
Door self-closures
Min. floor, wall & ceiling insulation
Anti-sweat heaters and controls
Lighting efficiency
2015 IECC Update 54
New
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Note: C403.2.16 regulates site-assembledunits to the same requirements
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C403.2.17 Refrigerated display casesC403.2.17 Refrigerated display cases
Site-assembled & site-constructed
Lighting controlled by time switch or motion sensor
Temp-based defrost termination control (Low-temperature display cases)
Anti-sweat heater controls based on RH or condensation
2015 IECC Update 55
New
C403.5 Refrigeration systemsC403.5 Refrigeration systems
Refrigerated display cases, walk-in coolersor walk-in freezers served by remote compressors and remote condensers not located in a condensing unit
Two subsections:C403.5.1 Condenser design & fan requirements
C403.5.2 Compressor controls & specifications
2015 IECC Update 56
Exempt: Systems using transcritical fluids & ammonia
C404.2.1 High input-rated service water-heating systemsC404.2.1 High input-rated service water-heating systems Gas-fired water-heating equipment with
ratings ≥ 1,000,000 Btu/hThermal efficiency ≥ 90%
Three exceptions regarding:Site-recovered energy (25%)
Individual dwelling units
Individual heaters≤ 100,000 BTU/h
2015 IECC Update 57
New
2015 IECC UpdateFinal Presentation 8/25/2015
Copyright 2015 International Code Council 20
C403.4.2.5 Boiler turndownC403.4.2.5 Boiler turndown
Applicable to boiler systems with design inputs > 1MM Btu/h
2015 IECC Update 58
Note: These requirements are in addition to the efficiencyrequirements in Table C403.2.8(5)
It can be achieved with:
Modulating boilers
Multiple single-input boilers
C403.2.5 / R403.2 Hot water boiler outdoor temperature setback ControlC403.2.5 / R403.2 Hot water boiler outdoor temperature setback Control
Requires an outdoor setback control for hot water boilers supplying heat to the building through one- or two-pipe heating systems
Must lower the boiler watertemperature based on theoutdoor temperature
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C404.3 Temperature ControlsC404.3 Temperature Controls Service water-heating equipment shall be
provided with controls to allow a setpoint of 110°F for equipment serving dwelling units and 90°F for equipment serving other occupancies. The outlet temperature of lavatories in public facility rest rooms shall be limited to 110°F.
See New Section C404.5 on Efficient heated water supply piping
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C404.4 Insulation of pipingC404.4 Insulation of piping Piping from water heater to termination of the
heated water fixture supply pipe must be insulated per Table C403.2.10.
Heat-traced piping may meet manufacturer’sinstructions
Continuous except where the piping passesthrough a framing member
Minimum requirements DO NOT supersedefreeze protection or personnel safety
See 7 exceptions
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C404.5 Efficient heated water supply pipingC404.5 Efficient heated water supply piping From nearest source of heated water to
termination of the fixture supply pipe
Maximum allowable pipe length methodTwo columns in Table C404.5.1
Public lavatory faucets
All other fixtures
Maximum allowable pipe volume methodVolume from the nearest source of heated water to the
termination of the fixture supply pipe
2 oz. public lavatory faucet, ½ gallon for other fixtures
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C404.6 / R403.5.1 Heated water circ. & temp. maintenance systemsC404.6 / R403.5.1 Heated water circ. & temp. maintenance systems
Accessible automatic controls
Readily accessible manual controls
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§C404.6.2 / R403.5.1.2Heat trace systems
Electric HTSs shall comply with IEEE 515.1
Automatic controls maintain desired temperature as function of time
§C404.6.1 / R403.5.1.1Circulation systems
Must have a circulation pump
Dedicated system return pipe or cold water supply
Pump controls maintain desired temperature
New
§C404.6.3 Controls for hot water storageControls on pumps to limit operation of the pump to 5 minutes after the end of heating cycle
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C404.7 / R403.5.2 Demand recirculation controlsC404.7 / R403.5.2 Demand recirculation controls
Pumps shall have controls that comply with both of the following:1. Start the pump upon hot water demand
2. Limit the temperature of the water entering the cold water piping to 104 ºF
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A water distribution system having one or more recirculationpumps that pump water from a heated water supply pipeback to the heated water source through a cold water supplypipe shall be a demand recirculation water system.
C404.8 / R403.5.4 Drain water heat recovery unitsC404.8 / R403.5.4 Drain water heat recovery units Comply with CSA B55.2
Tested i.a.w. CSA B55.1 (Residential)
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Cold Water from Main
Warmed Water to Cold Side of Faucet
Pressure loss ≤10 psi (Com)
< 3 psi(1 or 2 showers)
< 2 psi per unit(3+ showers)
C404.10 / R403.11 Energy consumption of portable spasC404.10 / R403.11 Energy consumption of portable spas The energy consumption of electric-
powered portable spas shall be controlled by the requirements of APSP 14.
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C405.2 Lighting controlsC405.2 Lighting controls C405.2.1 Occupant sensor controls
C405.2.1.1 Occupant sensor control function
C405.2.1.2 Occupant sensor control function in warehouses
C405.2.2 Time-switch controls C405.2.2.1 Time-switch control function
C405.2.2.2 Light-reduction controls
C405.2.2.3 Manual controls
C405.2.3 Daylight-responsive controls C405.2.3.1 Daylight-responsive control function
C405.2.3.2 Sidelight daylight zone
C405.2.3.3 Toplight daylight zone
C405.2.4 Specific application controls
C405.2.5 Exterior lighting controls
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C405.2.1 Occupant sensorsC405.2.1 Occupant sensors Turn off lights within 30 min of all
occupants leaving the space
Manual on or controlled toautomatically turn the lighting onto not more than 50% Exceptions for: public corridors,
stairways, restrooms, primarybuilding entrance areas andlobbies
Incorporate a manual control toallow occupants to turn lights off
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Classrooms/lecture/training rooms
Conference/meeting/multipurpose rooms
Copy/print roomsLoungesEmployee lunch and break rooms
Private officesRestroomsStorage roomsJanitorial closetsLocker roomsSpaces ≤ 300 ft2
Warehouses
C405.2.1.2 Occupant sensor control function in warehousesC405.2.1.2 Occupant sensor control function in warehouses Lighting in aisleways and
open areas
Automatically reduce lighting power ≥ 50 % when unoccupied.
Control lighting in each aisleway independently
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C405.2.2 Time-switch controlsC405.2.2 Time-switch controls Required in all areas not provided with occupant
sensor controls
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ExceptionsSleeping unitsSpaces where patient care is
directly providedSpaces where an automatic
shutoff would endanger occupant safety or security
Lighting intended for continuous operation
Shop and laboratory classrooms
Each space contain amanual control for lightreduction i.a.w. §C405.2.2.2
Override switching device7-day clock
Holiday “shutoff” feature
10-hour power loss backup
Manual override switch - Max of 2 hrs and 5,000 ft2
C405.2.2.1 ExceptionsC405.2.2.1 Exceptions Malls, arcades, auditoriums, single-tenant retail
spaces, industrial facilities and arenas:
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If override switch is a captive key device
• > 2 hr time limit permitted
Override switch permitted to control areas ≤ 20,000 ft2
C405.2.2.2 Light Reduction Controls (no sig. changes)C405.2.2.2 Light Reduction Controls (no sig. changes) Light reduction controls not required (§C405.2.2.1):Spaces with one luminaire < 100 watts
Spaces using < 0.6 watt / ft2
Corridors, equipment rooms, public lobbies,electrical & mechanical rooms
Light reduction controls are not required in daylight zones with daylight responsive controls complying with §C405.2.3
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C405.2.3 Daylight-responsive controlsC405.2.3 Daylight-responsive controls Lighting in daylight zones must be controlled
separately from other areas
Continuous dimming to 15% for certain spaces
Capability for complete shutoff of lights
Exemptions:
Sidelight daylight zones on the first floor above grade in Group A-2 and Group M occupancies are also exempt
All spaces with < 150 W of lighting within either a sidelight -or- toplight daylight zone
150 watts of lighting in each space is permitted to be controlled together with lighting in a daylight zone facing a different cardinal orientation
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C405.2.3.2 Sidelight daylight zoneC405.2.3.2 Sidelight daylight zone Vertical fenestration < 24 ft2 are exempt
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C405.2.3.3 Toplight daylight zoneC405.2.3.3 Toplight daylight zone
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C405.2.3.3 Toplight daylight zone (con’t)C405.2.3.3 Toplight daylight zone (con’t)
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C405.2.3.3 Toplight daylight zone (con’t)C405.2.3.3 Toplight daylight zone (con’t)
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C405.2.4 Specific application controlsC405.2.4 Specific application controls Specific application controls shall be provided for
the following:1.Display and accent lighting
2.Lighting in cases
3.Hotel and motel sleeping units and guest suites
4.Supplemental task lighting
5.Lighting for nonvisual applications
6.Lighting equipment that is for sale or for demonstrations in lighting
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C405.2.4 Specific application controls (expanded)C405.2.4 Specific application controls (expanded)
3. Hotel and motel sleeping units and guest suitesshall have a master control device that is capableof automatically switching off all installedluminaires and switched receptacles within 20minutes after all occupants leave the room
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Exception: Lighting and switched receptaclescontrolled by captive key systems.
C405.4.1 Total connected interior lighting powerC405.4.1 Total connected interior lighting power Reformatted by deleting §C405.5.1.1 – 4
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TCLP = [SL + LV + LTPB + Other] (Eq 4-9)where:
TCLP = Total connected lighting power (watts)
SL = Labeled wattage of luminaires for screw-in lamps.
LV = Wattage of transformer supplying low voltage lighting
LTPB = Wattage of line-voltage lighting tracks and plug-in busways as the specified wattage of the luminaires (≥ 30 W/lin-ft)
Other = The wattage of all other luminaires and lighting sourcesverified by data supplied by manufacturer or approved sources
C405.4.2 Interior lighting powerC405.4.2 Interior lighting power
§C405.4.2.1 Building Area Method “Area” is all contiguous spaces that accommodate or
are associated with a single building area type
Each building area type shall be treated as a separate area
Lighting power densities – significantly reduced
§C405.4.2.2 Space-by-Space MethodTradeoffs are permitted
Lighting power densities – significantly reduced
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BA vs. SbSBA vs. SbSBA Method Table C405.4.2(1)
Total Building Area:55 ft x 30 ft = 1650 ft2
LPD: 0.9 w/ft2 for Restaurant Building
Lighting Power Allowance: 1485 watts
Kitchen Area
15 x 15
Dining Area
SbS Method Table C405.4.2(1)
Food Preparation Area: 525 ft2 @ 1.21 w/ft2
Restroom Area: 225 ft2 @ 0.98 w/ft2
Dining Area: 900 ft2 @ 0.65 w/ft2
Lighting Power Allowance: 1441 watts
Fast Food Dining Establishment
20 x 15
20 x 30
15 x 35
Restroom Area
30 ft
55 f
t
405.4.2.2.1 Additional interior lighting power405.4.2.2.1 Additional interior lighting power Similar to footnote a of Table C405.5.2(2) (2012)
Only for Space-by-Space method
Automatically controlled separately from general lighting
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(Eq
4-10
)
Additional interior lighting power allowance =500 watts + (Retail Area 1 · 0.6 W/ft2) + (Retail Area 2 · 0.6 W/ft2) + (Retail Area 3 · 1.4 W/ft2) + (Retail Area 4 · 2.5 W/ft2)
Up to 10.7 w/ft2 in spaces for decorative appearance or highlighting art/exhibits
Transformers & MotorsTransformers & Motors C405.7 Electrical transformers (Mandatory)
Minimum efficiency requirements – Table C405.7
Tested & rated i.a.w. DOE 10 CFR 43
See exemptions
C405.8 Electrical motors (Mandatory)
Minimum efficiency requirements –Tables C405.8(1) through C405.8(4) Tables separated based on motor types
Tested & rated i.a.w. DOE 10 CFR 43
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C405.9 Vertical & horizontal transportation systems & equipmentC405.9 Vertical & horizontal transportation systems & equipment ElevatorsLuminaires ≥ 35 lumens/watt
Ventilation fans ≤ 1/3 watts/cfm
Controls to de-energize fans & lighting after 15 minutes of nonuse
Escalators & moving walks ASME’s Safety Code for Elevators
and Escalators
Automatic speed reduction
Variable frequency regenerative drive (750#)
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C406 Additional Efficiency Package OptionsC406 Additional Efficiency Package Options
Requires buildings designed to the prescriptive approach to comply with at least one of six subsections:
Superior HVAC performance (§C406.2)
Reduced LPD (§C406.3)
Enhanced lighting controls (§C406.4)
On-site supply of renewable energy (§C406.5)
Dedicated outdoor air system (§C406.6)
High-efficiency service water heating (§C406.7)
Individual tenant spaces must comply with one other than §C406.5 unless entire building is in compliance with §C406.5
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C406 Additional Efficiency Package Options (con’t)C406 Additional Efficiency Package Options (con’t)
Superior HVAC performance (§C406.2)Additional 10% efficiency over the Code requirements
Reduced LPD (§C406.3) Additional 10% efficiency over the Code requirements
Enhanced lighting controls (§C406.4)Luminaires are required to be capable of continuous
dimming and being addressed individually
Digital control system for fixtures Sequence of operations on construction documents
Functional testing required
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C406 Additional Efficiency Package Options (con’t)C406 Additional Efficiency Package Options (con’t)
On-site supply of renewable energy (§C406.5)0.50 W/ft2 or 3% of the energy for
mechanical, water heating & lighting
Dedicated outdoor air system (§C406.6)Ventilation system capable of total energy recovery for
buildings with hydronic & multi-zone HVAC (§C403.4)
Provide100% outdoor air to each individual occupied space
Automatic supply-air temperature controls
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C406 Additional Efficiency Package Options (con’t)C406 Additional Efficiency Package Options (con’t)
High-efficiency service water heating (§C406.7) ≥ 60 % hot water requirements supplied by waste heat
recovery or solar water-heating systems
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Group R-1: Boarding houses, hotels or motelsGroup I-2: Hospitals, psychiatric hospitals and nursing homesGroup A-2: Restaurants, banquet halls or
buildings containing food preparation areasGroup F: LaundriesGroup R-2: Buildings with residential occupanciesGroup A-3: Health clubs and spasAny other building with a service hot water load ≥ 10 % of total building energy loads (shown by an energy analysis)
§C407 Total Building Performance§C407 Total Building Performance §C401.2 requires 15% improvement over SRD
Footnote e was added to Table C407.5.1(1) to be able to take credit for DWHR units:Group R: as proposed × SWHF
1 – 2 showers: SWHF = 1 – (DWHR unit efficiency · 0.36)
3 – 4 showers: SWHF = 1 – (DWHR unit efficiency · 0.33)
5 – 6 showers: SWHF = 1 – (DWHR unit efficiency · 0.26)
7+ showers: SWHF = 1
All Others: as proposed × DWHR unit efficiency
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C407.6.3 Exceptional calculation methodsC407.6.3 Exceptional calculation methods Available if simulation program does not model a design,
material or device of the proposed design
Subject to approval by the code official
Each calculated separately
Total exceptional savings ≤ ½ difference in performance vs. baseline performance
Applications for approval must include:
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4. Time-step basis consistent with simulation program
5. Performance rating calculated with and without exceptional calculation method
1. Step-by-step documentation
2. Copies of all spreadsheets used
3. Sensitivity analysis – input parameters varied from 0.5 x – 2x
R405.4.2 Compliance reportR405.4.2 Compliance report Compliance report of proposed design for
building permit
Compliance report of as-built for certificate of occupancy
Batch sampling of buildings prohibited
Exception for proposed designs that could be built on different sites with different cardinal orientations was moved into §R405.4.2
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R405.4.2 Compliance reportR405.4.2 Compliance report§R405.4.2.1 Compliance report for permit application
§ R405.4.2.2 Compliance report for certificate of occupancy
1. Building street address or other site identification
2. A statement indicating that the proposed design (or as-built building)complies with Section R405.3.
3. Inspection checklist documenting building component characteristics ofthe proposed design as indicated in Table R405.5.2(1)
4. Certificate indicating the building passes the performance matrix forcode compliance and listing the energy-saving features of thebuildings
5. A site-specific energy analysis report that is in compliance with §R405.3
6. Name of individual performing analysis and generating report
7. Name and version of compliance software tool
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Section C408 System Commissioning Section C408 System Commissioning Mechanical systems - heating and cooling capacities≥ 600,000 and 480,000 Btu/h, respectively
Service water heating controls
Lighting systems C408.3.1.1 Occupant sensor controls
C408.3.1.2 Time-switch controls
C408.3.1.3 Daylight responsive controls
Preliminary & final commissioning reports Mechanical & service hot water findings in separate
sections
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R401.3 CertificateR401.3 Certificate Completed by builder or
registered design professional
Posted
On a wall in the space where the furnace is located
Utility room
Other approved location inside the building
Duct system test results
Building envelope air leakage test results
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R406 Energy rating indexR406 Energy rating index New compliance path
ERI analysis requires that the rated design ERI be ≤ the appropriate value listed in Table R406.4
ERI reference design – 2006 IECC (ERI = 100)
Essentially a HERS
Minimums:2009 BE requirements
2015 water heating
Documentation & reviewrequirements
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Chapter 5 [CE / RE]Existing BuildingsChapter 5 [CE / RE]Existing Buildings
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New Chapter Changes in occupancy Historic buildings Maintenance Additions Alterations Repairs
Some additions, alterations, renovations and repairs are exempt
C503.1 lists 7 exemptions
Chapter 5 [CE / RE] Existing Buildings (con’t)Chapter 5 [CE / RE] Existing Buildings (con’t)
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Change in occupancy that increases energy use
Addition of space conditioning to non-conditioned space
Historic buildings are exempt (C501.6)
Almost any change in occupancy or use
Full Compliance
Lighting Requirements
Appendix RAAppendix RARecommended procedure for worst-case testing ofatmospheric venting systems under R402.4 orR405 conditions ≤ 5 ACH50
Informative Appendix only
Provide procedure guidelines for worst-casetesting of atmospheric venting systems
Worst-case testing is recommended to identifyproblems that weaken draft and restrictcombustion air
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Appendix RBAppendix RBSolar-ready provisions—detached one- and two-family dwellings, multiple single-family dwellings
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Non-mandatory unless adopted
Mandates zone on roof & routesfor piping or conduit for futuresolar PV or solar thermal systems
Final ReflectionFinal Reflection
Purpose: To reflect on today’s seminar and document your key points.
What (Happened)?
What was the most important thing you learned today?
So What (Does it Mean to You)?
Why is this information important for you to know?
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International Code Council is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.
This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
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© A S Klein Engineering, PLLC 2015
2015 IECC Update
Thank you for participatingThank you for participating
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A S Klein Engineering, PLLC
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or
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