2015 IECC Update - International Building Codemedia.iccsafe.org/Annual/2015/2015IECC-Update.pdf ·...

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



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

2015 IECC Update 6

Participants will be able identify keychanges from the 2012 IECC to the 2015IECC, allowing them to apply these coderequirements to design, plan review, andinspection.



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

2015 IECC Update 7

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.

2015 IECC Update 9



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



IECC Commercial Compliance ProcessIECC Commercial Compliance Process

132015 IECC Update

ChooseA

PathIECC

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


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)

2015 IECC Update 15



C/R 301.4 Tropical climate zoneC/R 301.4 Tropical climate zone Area between the Tropic of Cancer &

Tropic of Capricorn

2015 IECC Update 16

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

2015 IECC Update 17

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

2015 IECC Update 18

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



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

2015 IECC Update 19

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

2015 IECC Update 20

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

2015 IECC Update 21

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



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.

2015 IECC Update 22

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

2015 IECC Update 23

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

2015 IECC Update 24



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

2015 IECC Update 25

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)

2015 IECC Update 26

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

2015 IECC Update 27



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

2015 IECC Update 28

Mass Walls - DefinitionMass Walls - Definition

2015 IECC Update 29

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

2015 IECC Update 30

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



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)

2015 IECC Update 31

(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

2015 IECC Update 32

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)

2015 IECC Update 33



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.

2015 IECC Update 34

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

2015 IECC Update 35

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

2015 IECC Update 36



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

2015 IECC Update 37

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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

2015 IECC Update 38

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

2015 IECC Update 39

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”)



Table R402.4.1.1Table R402.4.1.1

2015 IECC Update 40

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)

2015 IECC Update 41

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.

2015 IECC Update 42



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

2015 IECC Update 43

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

2015 IECC Update 44

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



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)

2015 IECC Update 46

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

2015 IECC Update 47

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

2015 IECC Update 48



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

2015 IECC Update 49

Contamination-sensing devices

Ventilation optimization controls to modulate airflow

2015 IECC Update 50

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

2015 IECC Update 51



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

2015 IECC Update 52

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

2015 IECC Update 53

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



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



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

2015 IECC Update 59

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

2015 IECC Update 60



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

2015 IECC Update 61

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

2015 IECC Update 62

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

2015 IECC Update 63

§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



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

2015 IECC Update 64

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)

2015 IECC Update 65

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.

2015 IECC Update 66



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

2015 IECC Update 67

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

2015 IECC Update 68

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

2015 IECC Update 69



C405.2.2 Time-switch controlsC405.2.2 Time-switch controls Required in all areas not provided with occupant

sensor controls

2015 IECC Update 70

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:

2015 IECC Update 71

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

2015 IECC Update 72



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

2015 IECC Update 73

C405.2.3.2 Sidelight daylight zoneC405.2.3.2 Sidelight daylight zone Vertical fenestration < 24 ft2 are exempt

2015 IECC Update 74

New

C405.2.3.3 Toplight daylight zoneC405.2.3.3 Toplight daylight zone

2015 IECC Update 75

New



C405.2.3.3 Toplight daylight zone (con’t)C405.2.3.3 Toplight daylight zone (con’t)

2015 IECC Update 76

New

C405.2.3.3 Toplight daylight zone (con’t)C405.2.3.3 Toplight daylight zone (con’t)

2015 IECC Update 77

New

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

2015 IECC Update 78



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

2015 IECC Update 79

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

2015 IECC Update 80

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

2015 IECC Update 81



2015 IECC Update 82

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

2015 IECC Update 83

(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

2015 IECC Update 84



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#)

2015 IECC Update 85

New

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

2015 IECC Update 86

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

2015 IECC Update 87

New




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

2015 IECC Update 88


High-efficiency service water heating (§C406.7) ≥ 60 % hot water requirements supplied by waste heat

recovery or solar water-heating systems

2015 IECC Update 89

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)



7+ showers: SWHF = 1

All Others: as proposed × DWHR unit efficiency

2015 IECC Update 90



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:

2015 IECC Update 91

New

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

2015 IECC Update 92

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

2015 IECC Update 93



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

2015 IECC Update 94

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

2015 IECC Update 95

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

2015 IECC Update 96



Chapter 5 [CE / RE]Existing BuildingsChapter 5 [CE / RE]Existing Buildings

2015 IECC Update 97

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)

2015 IECC Update 98

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

2015 IECC Update 99

New



Appendix RBAppendix RBSolar-ready provisions—detached one- and two-family dwellings, multiple single-family dwellings

2015 IECC Update 100

New

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?


102

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.

2015 IECC Update



103

Copyright Materials

This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is

prohibited.

© A S Klein Engineering, PLLC 2015

2015 IECC Update

Thank you for participatingThank you for participating

Speaker Contact Information:

The Andrew Klein

A S Klein Engineering, PLLC

509.380.5995

or

[email protected]


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