Darren Meyers, PE, CEM, GBE, BPI-BA Joseph E. Moore, MCP

International Energy Conservation Consultants, LLC Assured Construction Compliance, LLC

Education, Building Diagnostics, Energy-Engineering 3rd Party Plan Review, Inspection, Consulting

dmeyers@ieccode.com acc_consulting@sbcglobal.net

2012 Illinois

Energy Conservation Code Applications

A 2012 IECC® Update

Comparing Significant Changes of the

International Energy Conservation Code® 2009 to 2012

Today’s Agenda

1) Questions About the Law

2) 90% Compliance – Is it Attainable in Illinois?

3) 2012 IECC -Residential

a) Significant Changes in 2012 IECC

b) The “Building Analyst’s Perspective”

c) Focus on Simulation-Based Compliance (REM/Rate™, REScheck™)

4) 2012 IECC & ASHRAE 90.1-2010 - Commercial

a) Significant Changes in 2012 IECC

b) ENV, LTG, HIGH EFF, PWR, EQUIP, MECH, SWH, Cx, ECB

c) COMcheck™

5) 2012 IGCC The Future of Sustainable Code Enforcement

Questions About the Law

1

BITE Codes Training Program PY 2012-13 = IECC Event

= HVAC Event

5 2012 IECC Update

Enforcement and Compliance (cont.)

Q: Do jurisdictions have to enforce the code?

A: If municipality or county requires a permit for construction, additions, alterations, renovations or repairs to existing construction… Absolutely, YES!

Q: What if jurisdictions do not regulate energy efficient construction?

A: If a unit of local government does not regulate energy efficient building standards, any construction, renovation or addition to buildings or structures is [still] subject to the provisions in the Act.

Application to Home Rule Units

Q: Can jurisdictions “amend” the code?

Commercial: Not in a manner that is less stringent than the code established in the EEB Act. However, nothing in the EEB Act prevents adoption of a [commercial] energy code that is more stringent.

Residential: Not in a manner that less or more stringent than the code established in the EEB Act.

The following may regulate using more stringent standards

If adopted 2006 IECC on or before May 15, 2009; and provided CDB with identification of adoption as required by §55 of Illinois Building Commission Act; or

The City of Chicago

Enforcement and Compliance (cont.)

Q: What do I do if I am a designer, contractor or

home builder conducting work w/in the scope of the

code in a unit of government that neither inspects for

nor regulates energy efficient construction?

A: If a unit of local government does not regulate

energy efficient building standards, any construction,

renovation or addition to buildings or structures is

[still] subject to the provisions in the Act.

Recommendation: Evaluate your risk exposure?

Why Building Energy Codes?

9

90% Compliance in Illinois

2

What about code enforcement?

State Compliance Activities as of October 1, 2011

44/52

87/79

Patterns of Non-Compliance

2009 IECC 403.2.1 Duct installations in exterior walls. The

evaluation team noted several instances of kitchen exhaust and

environmental supply and return duct and stud-cavities located

within exterior walls.

2009 IECC 403.6 Equipment Sizing. Compliance generally not

evident for calculating heating and cooling loads. Where calculations

were presented, output of equipment specified and actually installed

was substantially greater than load. Many instances where “paper”

compliance varied from that observed on-site.

2009 IECC 405.4.1 Compliance Software Tools. All (8 of 8) of the

performance software compliance packages submitted for

compliance had enough errors/omissions that significantly affected

compliance assessment, field-installation, and inspection.

Significant Changes in

2012 IECC Residential

3a

U.S. Residential Energy Code History of efficiency improvements

19

Chapter 11 in IRC replaced by IECC-R(esidential)

Mandatory continuous foam sheathing of exteriors – Zones 4 & 5;

Better performing, more efficient windows (U-0.32 v. U-0.30ESTAR);

Every new home will need to pass a blower door test to 5ACH50;

Every new home will require mechanical ventilation:

For homes tested-out at 5ACH50 or less,

Exhaust, supply, or balanced systems;

May 1st 2013?! - Standards for Residential Furnaces VACATED!!!

New SHW pipe insulation and run-length requirements (R-3);

More stringent duct leakage thresholds (8CFM25 to 3CFM25);

Building cavities no longer allowed for supply or return air; and

Three of every four fixtures shall be high-efficacy lamps (75%).

2012 vs. 2009…

Residential … The bottom line

2012 vs. 2009 … The bottom line

Chapter 11 in IRC replaced by IECC-R(esidential)

Cold-climate builders: Get ready for mandatory foam sheathing;

Better performing, more efficient windows;

Every new home will need to pass a blower door test to 5ACH50;

Mechanical ventilation required for homes tested 5ACH50 or less;

New SHW pipe insulation and run-length requirements (R-3);

Increased stringency of duct leakage thresholds;

Building cavities no longer allowed for supply or return air;

Three of every four fixtures shall be high-efficacy lamps (75%);

Scope

Residential Buildings and building sites, associated systems

and equipment.

Commercial Buildings and High-Rise Multifamily

International Residential Code®

22

R101.4.6 – Scope & Mixed Occupancy

Each occupancy shall be separately considered residential or

commercial

Condominiums

Apartments

Retail

Residential

Residential

Commercial

Condominiums

Building is now 4 stories. Commercial Provisions throughout

Condominiums

Retail Apartments /Residential

Def’n – THERMAL ISOLATION

SUNROOMS

Sunrooms – One-story structure >40% glazed wall and roof area.

Must meet insulation requirements of code or be thermally isolated.

Physical and space conditioning separation from conditioned spaces.

The conditioned spaces shall be controlled as separate zones for

heating and cooling or conditioned by separate equipment.

2012 RECA

Compliance Guides for Illinois Homes

FREE Field Compliance Guides http://www.reca-codes.org/

Changes to Insulation Requirements

T402.1.1 – Footnote ‘h’ Slide

‘h’ First value is cavity insulation, second is continuous insulation or insulated siding,

so “13+5” means R-13 cavity insulation plus R-5 continuous insulation or insulated

siding. If structural sheathing covers 40 percent or less of the exterior, continuous

insulation R-value shall be permitted to be reduced by no more than R-3 in the

locations where structural sheathing is used – to maintain a consistent total

sheathing thickness.

R402.2.1 – Raised Truss Clarification (R-Value Reduction Over Entire Attic Field)

The R-30 for R-38 or R-38 for R-49 substitution is applied across

the entire attic field (not just at the wall line-to-eave extension).

INSULATION

Changes to Window Performance

R303.1.3 NFRC U, SHGC, VT

R402.3 – Area-Weighted Avg.

EC28-06/07 – Vapor Retarders Dr. Joe Lstiburek, Building Science Corporation

R402.2.3 – Eave Baffle

For air-permeable insulations in vented attics

EXTERIOR

STUD WALL

INTERIOR DRYWALL

CELLULOSE INSULATION

EAVE BAFFLE

(WIND BLOCK)

SOFFIT BAFFLE

(VENTILATION CHUTE)

34

http://www.ildceo.net/dceo/

R402.4.1.1 – Sealing the Building Envelope Align the pressure and thermal boundaries w/ wrapping materials

R402.4.2 – Fireplaces

T402.4.1.1 – Fireplace doors

New wood-burning fireplaces shall have tight-fitting flue dampers and dedicated outdoor combustion air.

Fireplace doors.

Gasket? (see UL127-08)

Advanced Rim/Band

Air-Leakage and Insulation Measures

Spray Foam Application R-Board Sealed-In-Place

Knauf Insulation's EcoSeal Spray Low-odor, low-VOC sealant dries to flexible tough film

IRC R303.4 – Mechanical Ventilation

IRC M1507.3 – Whole House Ventilation

43

44

IRC R303.4 – Mechanical Ventilation

IRC M1507.3 – Whole House Ventilation

Calculating a 62.2 Ventilation Rate

Base formula, step by step:

Multiply the number of bedrooms + 1 or the number of people

by 7.5 CFM per person:

4 people * 7.5 CFM/person = 30 CFM

Calculate 1 CFM per 100 square feet of floor area:

1500 ft2/100 ft2 per required CFM = 15 CFM

Add them together:

30 CFM + 15 CFM = 45 CFM continuous

CFMfan = 0.01Afloor + 7.5(Numberbedroom + 1)

+ (alternative compliance supplement)

- (infiltration credit)

Def’n – WHOLE HOUSE

MECHANICAL VENTILATION SYS

DEFINITION

An exhaust system, supply system or

combination thereof [balanced]

designed to mechanically exchange

indoor air with outdoor air.. operating

continuously or intermittently.. to

satisfy whole house ventilation rates.

Exhaust-only System

46

Supply-only System

47

Def’n – WHOLE HOUSE

MECHANICAL VENTILATION SYS

48

Integrated [Balanced] System

HRV or ERV

Def’n – WHOLE HOUSE

MECHANICAL VENTILATION SYS

System Types, Geography,

Climate

Restrictions

Hot, Humid Climates

Exhaust-only systems shall not

exceed 7.5 cfm/100 ft2 of CFA.

Very Cold Climates

Mechanical supply systems

exceeding 7.5 cfm/100 ft2 of CFA,

prohibited. 49

R403.6 – Equipment Sizing

ACCA Manual ‘J’, Manual ‘S’

Manual J8th is only used to calculate the heating and cooling loads.

Manual J8th guides HVAC designers to use ACCA Manual S to

select equipment that is the right size (see§10-4 of Manual S).

Manual S sets equipment sizing limits, as summarized in Table 1.

R403.4.2 – Hot water pipe insulation

Hot water piping must be insulated to at least R-3 as follows:

1. Piping is larger than 3/4” in nominal diameter,

2. Piping serves more than one dwelling unit,

3. Piping runs from water heater to kitchen outlets,

4. Piping is located outside of conditioned space,

5. Piping runs from water heater to a distribution manifold,

6. Piping is located under a floor slab,

7. Piping is buried,

8. Supply and return piping is in recirculation systems other than

demand recirculation systems,

9. Piping run exceeds the following maximum run lengths:

R404.1 – Three of every four

fixtures shall be high-efficacy lamps

A minimum of 75% of the lamps in

permanently installed lighting

fixtures shall be high-efficacy lamps.

Significant Changes 2012 Performance-Based Compliance

3b

Darren Meyers, PE, CEM, GBE, BPI-BA

International Energy Conservation Consultants

Education, Building Diagnostics, Energy-Engineering

dmeyers@ieccode.com

Matthew Brown, CGP, HERS Rater

Energy Diagnostics Inc.

Ph 1-800-390-8091

energydiagnostics@hotmail.com

R405 – Simulation Software (Performance Alternative)

Neither ICC nor DOE review or approve specific software.

Section 405 and tables R405.5.2(1) & R405.5.2(2) set the “Rules to

the Game” for how the software must calculate compliance.

Some more commonly known software are:

REM/Rate™, REM/Design™

EnergyGauge® USA Residential, EnergyGauge® Commercial

MICROPAS® California Residential Energy Standards (a.k.a., Title-24)

REScheck™ and COMcheck™ are Total UA Trade-Off Tools

Not Simulation Software.

Some software offer’s more flexibility than others: REM/Rate™ and

EnergyGauge® can use data from building diagnostic testing to

allow for flexibility and an “as installed” approach to meeting code.

R405 – Simulation Software Neither ICC nor DOE review or approve specific software.

For 2009 IECC use REM/Rate™ v12.93 +

For 2012 IECC use REM/Rate™ v12.97 +

Evaluating Performance Software

Submittals

1) 2012 IECC Building File Report

[Projected]

2) 2012 IECC Reference Building

File Report [Projected]

3) 2012 IECC Annual Energy Cost

Compliance [Projected]

4) Inspection Checklist

5) Certificate [Preliminary]

1) 2012 IECC Building File Report

[Confirmed]

2) 2012 IECC Reference Building

File Report [Confirmed]

3) 2012 IECC Annual Energy Cost

Compliance [Projected]

4) Air Leakage Report,

a) ACHnat, ACH50, Duct Leakage

b) IRC 1507.3/ASHRAE 62.2 compliance

5) Certificate [Confirmed]

6) HERS Certificate [as necessary]

Permit Review Certificate of Occupancy

$16

Climate Location tells the

software what climate zone

to use, HDD, CDD, and the

design conditions to use.

Derived from ASHRAE and

consistent with IECC.

Utility Rates are set the

same for the reference home

and the as designed home.

Rates are derived from the

utility serving the address.

62

Above Grade Wall Library

details the components of

the wall assembly including

attributes such as cavity R-

value, framing types and

dimensions, and framing

factors.

Location tells software

how to load the wall

assembly.

Inspectors note: Verify

Correct entries for

Continuous and Cavity

insulation. The Performance

allows for use of items such

as sheathing and air films,

where the prescriptive path

does not. Verify correct

framing factor is used.

64

Field Inspector Note.

Is this building framed

w/ Advanced Framing?

Insulated box headers

vs. sawn-lumber, single

top plates, three-corner

studs w/ clips?

No framing technique

allows 85/15.

http://www.ildceo.net/dceo/

ASHRAE/IECC

Framing Correction Factors

Standard Framing

Attic roofs: 85% full-depth

insulation, 5% half-depth

insulation, and 10% joists.

Walls: Double headers

leave no cavities.

75% insulated, 21% studs/

plates/sills, 4% headers.

Floors: 91% insulated

cavity and 9% framing.

Advanced Framing (OVE)

Attic roofs: 90% full-depth

insulation and 10% joists.

Walls: Double headers

leave uninsulated cavities.

78% insulated, 18% studs/

plates/sills, 4% headers.

Floors: 91% insulated

cavity and 9% framing.

Wall Insulation Grades I-III

Grade I Grade II Grade III

2% R-0, 98% R-Value “as labeled.”

Insulation mostly making contact with all

sides of framing. Some indentations and

compressions of the insulation.

5% R-0, 95% R-Value “as labeled.”

Insulation has multiple gaps and

compressions. Insulation was not cut –

to-fit around plumbing or wiring.

R-Value “as labeled.”

Insulation makes full contact w/ all sides

of wall framing. No indentations or gaps.

Insulation is cut-to-fit around plumbing

and wiring.

Field Inspector Note.

Same house …

So, what’s different?

The VisionPRO IAQ touch-screen

universal programmable thermostat

provides electronic control of 24

Vac heating and cooling systems in

addition to humidification,

dehumidification and ventilation all

with just 3 wires to the thermostat.

$208.00

Honeywell VisionPro IAQ Thermostat

• For a 2,000 ft2 home

max leakage is 4 cfm / 100 ft2

• (2,000/100) x 4 =

80 cfm max leakage

• 40 cfm < 80 cfm … PASSES !

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© International Energy Conservation Consultants 2012

© Thermal Imaging Services of Central Illinois 2012

Thank you!