The document discusses changes to California's Title 24 building energy standards that take effect on January 1, 2010. It covers new requirements for building envelopes, HVAC systems, lighting, and compliance forms/processes. Specifically, it notes more stringent prescriptive requirements for windows and duct testing/sealing will now be required.
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2008 Residenital T 24 Presentation
1. 10/1/2009
Title 24 Building Energy Standards
Title-24
Energy Code Works, Inc.
Mark Madison
CEPE, CEA, AEE, HERS Rater,
GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS
Scope of this Class
1 Changes to Envelope Requirements
2 Changes to HVAC Requirements
3 New Residential Lighting Requirements
4 Impact of Time Dependant Valuation (TDV)
www.energycode.com Energy Code Works, Inc.
Scope of this Class
5 New Ventilation Requirements
6 New HERS Credits
7 New Forms & Registration Requirements
8 Q&A
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1
2. 10/1/2009
2008 Building Energy Standards
Effective date: January 1, 2010
Some cities and counties will allow you to submit 2008 Title‐24
compliance calculations prior to January 1, 2010.
Benefits of using 2008 Standards now (tract projects)
Current projects that might slip past January1 date should be
analyzed using 2008 Standards to avoid surprises later.
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2008 Building Energy Standards
Effective date: January 1, 2010
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2008 Building Energy Standards
Brief History of Title‐24
1976 California Energy Commission created
1977 Warren‐Alquist Act
“The standards shall be cost effective”
ff
“C.E.C. shall periodically update the
standards and adopt revisions when
deemed necessary”
Al Alquist
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2
3. 10/1/2009
2008 Building Energy Standards
Brief History of Title‐24
1978 Standards
1980 Standards
1982 Standards
1984 Standards
1986 Standards
1987 Standards
1988 Standards
1992 Standards
1995 Standards
1998 Standards
2001 Standards
2005 Standards
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2008 Building Energy Standards
Brief History of Title‐24
1st edition of Title‐24
Building Energy Standards
July 26, 1978, 114 pages
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2008 Building Energy Standards
Brief History of Title‐24
1978 Prescriptive Requirements
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4. 10/1/2009
2008 Building Energy Standards
Brief History of Title‐24
Current 2005 Prescriptive Requirements
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2008 Building Energy Standards
Brief History of Title‐24
Result of 30 years of Title‐24 Standards:
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2008 Building Energy Standards
Brief History of Title‐24
2008 Title‐24 Energy Standards
Standards : 166 pages
Residential Manual: 522 pages
Non‐Res Manual: 901 pages
Appendixes: 352 pages
Appliance Efficiency Regs: 238 pages
pp y g p g
Title‐24 ACM Manual: 212 pages
HERS Manual: 106 pages
HERS Regulations: 24 pages
Total: 2521 pages
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5. 10/1/2009
2008 Building Energy Standards
Brief History of Title‐24
1978 thru 1998 Title‐24 fairly low priority concern in plancheck process
2001 Standards changed all that
Tighter code/HERS Measures/City Requirements have made Title‐24 a
priority best addressed early in design stage
Utility Incentive Programs also use Title‐24 as yardstick to qualify
submittals into their programs.
submittals into their programs
2008 bottom line:
Title‐24 needs to be incorporated early into the building design process
Title‐24 is not over when permit is issued
All in design team need to be well versed in Title‐24 requirements,
HERS measures, forms and inspections, coordination is critical.
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2008 Building Energy Standards
Brief History of Title‐24
Compliance forms have grown exponentially
1978, 2 pages
2008 CF‐1R, MF‐1R, CF‐6R total 68 pages
Minimum of 8 and up to 24 pages on the drawings
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2008 Building Energy Standards
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5
6. 10/1/2009
2008 Building Energy Standards
Future of Title‐24
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2008 Building Energy Standards
Future of Title‐24
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2008 Building Energy Standards
Future of Title‐24
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6
7. 10/1/2009
2008 Building Energy Standards
Future of Title‐24
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Scope of this Class
1 Changes to Envelope Requirements
2 Changes to HVAC Requirements
3 New Residential Lighting Requirements
4 Impact of Time Dependant Valuation (TDV)
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Compliance Paths
Two compliance paths available
Prescriptive Performance
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8. 10/1/2009
Compliance Paths
Two compliance paths available
Mandatory
Measures
Prescriptive Performance
Prescriptive Performance
Path Path
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Compliance Paths
Advantages/Disadvantages
Mandatory
Measures
Prescriptive Performance
Prescriptive Performance
Path Path
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Building Envelope
Walls, floors, ceiling assemblies
Windows,
Windows glass doors, skylights
doors
When required, testing and
certification, & labeling
requirements, where required.
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9. 10/1/2009
Building Envelope
Current 2005 Prescriptive
Requirements
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Building Envelope
New 2008 Prescriptive
Requirements
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Building Envelope
New 2008 Prescriptive
Requirements
Must use envelope assemblies
from tables in Residential
Appendix t quantify R-
A di to tif R
value/U-factor for assemblies
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10. 10/1/2009
Building Envelope
New 2008 Prescriptive
Requirements
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Building Envelope
New 2008 Prescriptive
Requirements
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Building Envelope
New 2008 Prescriptive
Requirements
Change from wood framing to metal framing can significantly affect compliance.
Wood and metal framing not interchangeable
Metal framed construction generally will require a exterior rigid insulating board
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11. 10/1/2009
Building Envelope
New 2008 Prescriptive
Requirements
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Building Envelope
New 2008 Prescriptive
Requirements
Bottom Line:
Prescriptive insulation levels remain essentially
unchanged from 2005 standards
Big change…..Fenestration requirements
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Building Envelope
Current 2005 Prescriptive
Requirements
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12. 10/1/2009
Building Envelope
New 2008 Prescriptive
Requirements
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Building Envelope
Windows, glass doors, skylights
Two allowable methods for determining window & door
g
performance:
NFRC procedures/labels or…
Use default tables (116-a & 116-b)
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Building Envelope
Windows, glass doors, skylights
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13. 10/1/2009
Building Envelope
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Building Envelope
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Building Envelope
Windows, glass doors, skylights
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14. 10/1/2009
Building Envelope
Windows, glass doors, skylights
Default tables 116-a & 116-b
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Building Envelope
Windows, glass doors, skylights
2008 Package D
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Building Envelope
Windows, glass doors, skylights
Package D vs. Default tables (U-factor)
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15. 10/1/2009
Building Envelope
Windows, glass doors, skylights
Package D vs. Default tables (SHGC)
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Building Envelope
Windows, glass doors, skylights
Package D vs. NFRC labels
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Building Envelope
Windows, glass doors, skylights
Bottom Line:
Prescriptive U-factor requirements
P i ti U f t i t
almost 30% more stringent than
2005 code
2008 Standards will force you to
use NFRC Labels
Significant penalty for using default
tables
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16. 10/1/2009
Building Envelope
When required, where required,
testing, certification & labeling
In 2008 code required
prescriptively in all climate zones
New, addition & alterations
N dditi lt ti
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Building Envelope
When required, where required,
testing, certification & labeling
Energy Star Cool Roof does not
qualify in California
Must be certified & labeled by the
Cool Roof Rating Council
Roof tear-offs will trigger cool
roof requirement, however….
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Building Envelope
When required, where required,
testing, certification & labeling
Tradeoffs to avoid cool roof requirement:
1. Buildings with no ducts in attic or,
2. Radiant barrier in the attic or,
3. R-30 attic insulation; or,
4. If in Climate zones 10, 11, 13, and 14 R-3 or greater roof
deck insulation or,
5. Existing ducts insulation, sealed and HERS duct tested or,
6. Use performance approach and utilize trade-offs and…
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17. 10/1/2009
Building Envelope
When required, where required,
testing, certification & labeling
Exemptions to cool roof requirement:
Roof areas covered by building integrated photovoltaic panels and
solar hot water p g g
panels and roofs with existing roof ballasts w/weight
of 25 lb/ft2 are exempted from cool roof requirement.
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Scope of this Class
1 Changes to Envelope Requirements
2 Changes to HVAC Requirements
3 New Residential Lighting Requirements
4 Impact of Time Dependant Valuation (TDV)
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HVAC
Minimum AFUE, SEER, EER
SEER vs EER
Prescriptive requirement
No prescriptive alternatives
HVAC change-outs
Refrigerant Charge Measurement
Cooling Coil Airflow
Fat Watt Draw
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18. 10/1/2009
HVAC
Appliance Efficiency Regulations
set HVAC efficiency minimums in
Prescriptive Packages
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HVAC
Prescriptive Packages refer to
Appliance Efficiency Regulations
minimums
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HVAC
Minimum AFUE, SEER, EER
SEER vs EER
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19. 10/1/2009
HVAC
Minimum AFUE, SEER, EER
SEER vs EER
Questions:
What is the difference between
EER and SEER?
Why does it matter?
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HVAC
Minimum AFUE, SEER, EER
SEER vs EER
EER is measured at 80 degrees
indoor air running continuously
SEER is measured by using the
EER and factoring in the same unit
running under a lighter load (80
degrees indoor, 82 degrees
outdoor and cycling on and off
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HVAC
Minimum AFUE, SEER, EER
SEER vs EER
Why this matters:
Possible for two units with the same
SEER to have different EERs
For two units with a given SEER the
one with the higher EER will be more
efficient
EER’s higher than 10 require HERS
verification
Take time to verify SEER and EER
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20. 10/1/2009
HVAC
Minimum AFUE, SEER, EER
SEER vs EER
Why this matters:
g gg
EER higher than 10 will trigger a
HERS credit in the Title-24 compliance
calculations
Will also appear on the CF-1R as a
HERS measure required verification
and a CF-4R
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HVAC
Minimum AFUE, SEER, EER
SEER vs EER
Bottom Line:
Minimum efficiency levels remain
essentially unchanged from 2005
standards. EER more important
Big change…..Duct testing,
Refrigerant Charge Measurement,
Cooling coil airflow & Fan Watt Draw
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HVAC
Prescriptive requirement
No prescriptive alternatives
HVAC change-outs
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21. 10/1/2009
HVAC
Prescriptive requirement
No prescriptive alternatives
HVAC change-outs
TXV verification or higher EER
alternatives no longer options to
lt ti l ti t
avoid duct sealing & testing
Performance approach is an
option to tradeoff against duct
sealing & testing
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HVAC
Prescriptive requirement
No prescriptive alternatives
HVAC change-outs
HVAC change-outs
Ducts must be sealed and tested
under any of the following
circumstances:
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HVAC
Prescriptive requirement
No prescriptive alternatives
HVAC change-outs
HVAC change-outs
1. Air handler installed or replaced
2. Outdoor condensing unit installed or replaced
3. Cooling or heating coil installed or replaced
4. Furnace heat exchanger installed or replaced
5. When existing duct systems are altered in
climate zones 2, 9, 10, 11, 12-16
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22. 10/1/2009
HVAC
Heating
Cooling
HVAC Equipment Sizing
Heating
The Standards do not set limits on the sizing of heating equipment, but they do
require that heating loads be calculated for new heating systems Acceptable load
calculation procedures include methods described in the ASHRAE Handbook –
Equipment, ASHRAE Handbook – Applications, ASHRAE Handbook –
Fundamentals, SMACNA Residential Comfort System Installation Manual, or ACCA
Manual J.”
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HVAC
Heating
Cooling
HVAC Equipment Sizing
Cooling
“Just as for heating equipment, the Standards do not set limits on the size of
cooling equipment, but they do require that cooling loads be calculated for new
cooling systems. Avoiding over sizing is especially important for cooling
equipment because efficiency degrades when the system cycles on and off
frequently.
The Standards offer a compliance credit when the installed air conditioning
equipment is sized in accordance with the Reference Residential Appendix RA1
Maximum Rated Cooling Capacity for compliance credit sizing calculations. A
HERS rater field verification is required to confirm that the installed equipment
conforms to the sizing criteria as reported on the CF-1R.”
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
Prescriptive Package Requirements
Refrigerant charge Measurement
Climate zones 2 and 8-15 (split systems only)
Cooling Coil Airflow (greater than 350 cfm per ton)
Climate zones 10-15
Fan Watt Draw (less than 0.58 watt per cfm)
Climate zones 10-15
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23. 10/1/2009
HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
Prescriptive Package Requirements
Refrigerant charge Measurement
Climate zones 2 and 8-15 (split systems only)
Cooling Coil Airflow (greater than 350 cfm per ton)
Climate zones 10-15
Fan Watt Draw (less than 0.58 watt per cfm)
Climate zones 10-15
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
Temperature Measurement Access Holes (TMAH)
Package C & D require HERS verification of proper
refrigerant charge
HVAC installer must provide TMAH
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24. 10/1/2009
HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
Two permanently installed
p ,
temperature sensors, one
mounted on evap coil and one
mounted on condenser coil.
Must be type K with plug leading
to outside of equipment accessible
to HERS raters without any
disassembly
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
HVAC contractor must provide
pressure and temperature access
holes of specific size in specific
p p
locations and label these holes.
This mandatory for HERS rater to
later verify RCM, CCA and Fan
Watt Draw
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25. 10/1/2009
HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
Cooling Coil Air Flow and Fan
Watt Draw hole for Static Pressure
Probe
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
2008 Appendix RA-3 page 3-11
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26. 10/1/2009
HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
HVAC Change-outs
Climate zones 2 and 8-15 new or replacement split a/c
units or heat pumps RCM required with HERS verification
Applies also when components of existing HVAC system
such as outdoor condensing unit or indoor coil are
replaced
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HVAC
Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw
HVAC Change-outs
Climate zones 10-15 when new or replacement space
conditioning system is installed CCA and FWD required
with HERS verification
This is a prescriptive requirement, can be traded-off using
performance approach
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Scope of this Class
1 Changes to Envelope Requirements
2 Changes to HVAC Requirements
3 New Residential Lighting Requirements
4 Impact of Time Dependant Valuation (TDV)
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26
27. 10/1/2009
Residential Lighting
50% Rule
High Efficacy
New allowances
Bathrooms, Garages,
#1 Bathrooms Garages Laundry
rooms, closets & utility rooms
#2 Other Rooms
Minimum efficacy
Required controls
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Residential Lighting
50% Rule
High Efficacy
New allowances
50% rule remains
No limit to kitchen lighting watts
However 50% of total installed
lighting watts must be high efficacy
High efficacy fixtures switched
separately from incandescent or
low efficacy fixtures
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Residential Lighting
50% Rule
High Efficacy
New allowances
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28. 10/1/2009
Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
Table 150-C provides definition
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Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
Table 6-2 for LED efficacy
LED fixtures must be C.E.C. Certified
Not all LED fixtures are high efficacy
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Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
Blank electrical boxes calculated as 180
watts low efficacy
Assumed wattage for recessed lumenaires
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29. 10/1/2009
Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
New wattage assumptions for CF or HID fixture that
can accommodate a variety of lumenaires
For example 26w, 32w & 42 watt fixture
26w + 32w + 42w = 100w divided by 3 = 33.33w
Then use wattage of lumenaire initially installed
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Residential Lighting
50% Rule
High Efficacy
New allowances
New allowances
1. Additional low efficacy wattage allowance
Only available after 50% efficacy rule met
2. Kitchen has manual on vacancy sensors or dimmers
3. High efficacy lumenaires and vacancy sensors in garages,
laundry rooms, closets and utility rooms
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Residential Lighting
50% Rule
High Efficacy
New allowances
New allowances
Internal cabinet lighting allowance
20 watts per linear foot of illuminated cabinet
Must be interior to cabinet and illuminated the inside of cabinet
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30. 10/1/2009
Residential Lighting
50% Rule
High Efficacy
New allowances
Kitchen Lighting Documentation
No more WS-5R (1 page)
New form: CF-6R-LTG-01 (3 pages)
Includes other rooms, outdoor lighting
I l d th td li hti
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Residential Lighting
50% Rule
High Efficacy
New allowances
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Residential Lighting
New form:
CF-4R-LTG-1
Not submitted at plan-check
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31. 10/1/2009
Residential Lighting
CF-4R-LTG-1
For 2008
not submitted at
plan check
Now a construction
document
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Residential Lighting
2005 Standards
WS-5R is currently
submitted at plan check
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Residential Lighting
#1 Bathrooms, Garages, Laundry
rooms, closets & utility rooms
#2 Other Rooms
Bathrooms, Garages, Laundry Rooms, closets
(less than 70 sq. ft.) & utility rooms
Rules unchanged for 2008
Fixtures must either be:
High efficacy or,
Controlled by a vacancy sensor
An occupancy sensor does not necessarily qualify
as a vacancy sensor
Must be manual on, auto-off
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32. 10/1/2009
Residential Lighting
#1 Bathrooms, Garages, Laundry
rooms, closets & utility rooms
#2 Other Rooms
Attics
Regardless of square footage attics are considered
“other spaces
other spaces”
High efficacy fixture with regular switch or…
Incandescent with dimmer or vacancy sensor
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Residential Lighting
#1 Bathrooms, Garages, Laundry
rooms, closets & utility rooms
#2 Other Rooms
Enclosed Patio (unconditioned)
Also considered “other space”
High efficacy fixture with regular switch or…
or
Incandescent with dimmer or vacancy sensor
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Residential Lighting
Minimum efficacy
Required controls
Permanently mounted to the building
Rules slightly changed for 2008
Fixtures must either be:
High efficacy or controlled by one of the following:
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33. 10/1/2009
Residential Lighting
Minimum efficacy
Required controls
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Residential Lighting
Minimum efficacy
Required controls
Motion Sensor requirements
Auto-on & Auto-off
Must include photocell control
Must provide regular switch for manual operation
Must comply with 30 minute shutoff requirement
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Residential Lighting
Minimum efficacy
Required controls
Exempt outdoor lighting
Any fixtures not attached to building
Decorative landscape lighting
Pool/Spa lighting
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34. 10/1/2009
Scope of this Class
1 Changes to Envelope Requirements
2 Changes to HVAC Requirements
3 New Residential Lighting Requirements
4 Impact of Time Dependant Valuation (TDV)
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TDV
4 Impact of Time Dependant Valuation (TDV)
New for 2008 Residential Standards
Previous versions of Title-24 did not account for time-of-use patterns
TDV accounts for variations in cost related to time of day, seasons, geography, fuel type
2008 Standards now places a higher value on energy savings during high cost times
Encourages designs that will reduce peak loads thru-out California.
thru out California
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TDV
4 Impact of Time Dependant Valuation (TDV)
Example:
Single family residence
1800 sq. ft.
Package D parameters
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35. 10/1/2009
TDV
4 Impact of Time Dependant Valuation (TDV)
Example:
SFR residence
1800 sq. ft.
Package D
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TDV
4 Impact of Time Dependant Valuation (TDV)
Example:
SFR residence
1800 sq. ft.
Package D
1ST Perf Run
Front facing N
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TDV
4 Impact of Time Dependant Valuation (TDV)
Example:
SFR residence
1800 sq. ft.
Package D
2nd Perf Run
Multiple
Orientations
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36. 10/1/2009
TDV
4 Impact of Time Dependant Valuation (TDV)
Bottom Line for 2008
Building designs that generate high heating/cooling loads during peak
energy cost periods will be severely penalized
t i d ill b l li d
Electric multipliers for 2008 up to 50 verses 20 in 2005 standards
Gas multipliers for 2008 up to 1.5 vs. 1.0 in 2005 standards
Upside: Energy saving features, strategies that reduce peak loads
are rewarded greatly
break
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Title 24 Building Energy Standards
Title-24
Energy Code Works, Inc.
Break
Scope of this Class
5 New Ventilation Requirements
6 New HERS Credits
7 New Forms & Registration Requirements
8 Q&A
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36
37. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
•Requirements for local ventilation (bathrooms/kitchens)
•100 cfm range hoods/50 cfm for bath fan
•Why? Windows not being used for ventilation
•All low-rise residential buildings required to
have whole house ventilation
8
•Window operation not a permissible method
•Mandatory measure
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Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
•Kitchens/bathrooms have local exhaust vented to
outdoors
•Clothes dryer vented to outdoors
•Combustion appliances properly vented and air systems
designed to prevent backdrafting
•MERV 6 filters in HVAC system
•Ventilation fans must meet sound requirements
8
Continuously operation: 1.0 sone
Intermittent fans: 3.0 sone
Additions smaller than 1000 sq. ft. exempt
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Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
What is a sone?
8
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37
38. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
What is a sone?
A Sone is a measurement of sound in terms of comfortable
hearing level for an average listener. The lower the sone
value, the more comfortable the listening environment.
Sones are not decibels or volume, but rather how sound is
8
"sensed". One sone is the equivalent of a quiet refrigerator.
First proposed by Stanley Smith Stevens in 1936.
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Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Three generic solutions to meeting outside air ventilation
requirements
1. Exhaust Ventilation
2. Supply Ventilation
3. Combination supply/exhaust
8
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Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Exhaust ventilation
8
www.energycode.com Energy Code Works, Inc.
38
39. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Supply ventilation
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Combination supply/exhaust ventilation
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
One cubic foot per minute (cfm) for each 100 sq. ft. of floor
area plus 7.5 cfm for each occupant. The number of
l 75 f f h t Th b f
occupants = the number of bedrooms plus one person:
8
www.energycode.com Energy Code Works, Inc.
39
40. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
One cubic foot per minute (cfm) for each 100 sq. ft. of floor
area plus 7.5 cfm for each occupant. The number of
l 75 f f h t Th b f
occupants = the number of bedrooms plus one person:
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
What is the required continuous ventilation rate required for
Wh t i th i d ti til ti t i df
a 3 bedroom, 1,800 sq. ft. townhouse?
Formula:
One cubic foot per minute (cfm) for each 100 sq. ft. of floor
area plus8 cfm for each occupant. The number of
7.5
occupants = the number of bedrooms plus one person:
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
What is the required continuous ventilation rate required for
Wh t i th i d ti til ti t i df
a 3 bedroom, 1,800 sq. ft. townhouse?
Answer:
48 cfm. 1800/100 = 18 cfm
8
+ 3 (bedrooms) + 1 (person) x 7.5 cfm = 30 cfm
30 cfm + 18 cfm = 48 cfm
www.energycode.com Energy Code Works, Inc.
40
41. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
How would you satisfy this 48 cfm ventilation requirement?
H ld ti f thi f til ti i t?
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
How would you satisfy the 48 cfm ventilation requirement?
H ld ti f th f til ti i t?
Answer:
50 cfm continuously operating local exhaust
in one of the bathrooms
This also is the minimum cfm required for the local exhaust
portion of ASHRAE 62.2
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Intermittently operating fans will be required to have a
larger cfm airflow to makeup for the fewer hours of fan
l f i fl t k f th f h ff
operation.
Required air flow rate can be 10 to 20 times greater when
fans operate less than 6 hours per day.
8
www.energycode.com Energy Code Works, Inc.
41
42. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Controls and Operation
Must have override control readily accessible
If intermittent fans are used must use timer
8
www.energycode.com Energy Code Works, Inc.
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the designer?
Note block
Calcs
Specs
Details on HVAC plans if incorporated into HVAC system
CF-6R MECH-5 (at inspection)
8
www.energycode.com Energy Code Works, Inc.
42
43. 10/1/2009
Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
8
www.energycode.com Energy Code Works, Inc.
Scope of this Class
5 New Ventilation Requirements
6 New HERS Credits
7 New Forms & Registration Requirements
8 Q&A
www.energycode.com Energy Code Works, Inc.
HERS Measures
Duct Sealing •Sealed and HERS verified less than 6% supply fan flow
•Change-outs: 15% or less of fan flow
Supply
Duct • Conditioned space, buried ducts
Location
Supply Duct
• Reduced surface area.
Credits
• NEW CEC certified AHU w/less than 2% leakage.
Low Leakage Duct sealing & testing also required.
AHU
•CHANGED Refrigerant charge verified using one of three methods
Refrigerant
Invasive, non-invasive & CID. No TXV to trade against
Charge
www.energycode.com Energy Code Works, Inc.
43
44. 10/1/2009
HERS Measures
CID • NEW Charge Indicator Device
• NEW Requires air handling units maintain supply airflow greater
CCA than 350 cfm per nominal ton of cooling capacity across the coil
Fan Watt
• NEW Requires fan watt draw less than 0.58 watts per cfm
Draw
• HVAC condenser & coil correctly matched to achieve
High EER high EER (above 10)
Cooling •Credit for A/C equipment having cooling capacity that meets
Capacity calculated maximum cooling load.
www.energycode.com Energy Code Works, Inc.
HERS Measures
Evap Cooled • NEW Improves EER, water use limits & duct sealing, air flow, and
Condensers refrigerant charge verification required.
Ice
Storage • NEW Shifts peak energy use to off-peak hours (Ice Bear)
A/C Additional HERS measures required
q
Envelope
• Sealing, caulking, gaskets. Verified by HERS blower door test.
Sealing
• Framing stage field verification then insulation stage verification.
QII • New QII verification for Spray Polyurethane Foam
• Not a Title-24 credit, New Solar Home Program requirement
Photovoltaic
• HERS PV verifications required.
www.energycode.com Energy Code Works, Inc.
HERS Measures
HERS Measures most
commonly specified for 2008:
Duct Sealing
Refrigerant
Charge
Cooling Coil
Airflow
Fan Watt
Draw
Photovoltaic
QII
www.energycode.com Energy Code Works, Inc.
44
45. 10/1/2009
HERS Measures
HERS Measures additional benefits
•HVAC installation quality control
Duct Sealing Fewer than 10% of HVAC systems have
permits pulled
30-50% not installed properly
Refrigerant
Charge •Insulation installation quality control
Cooling Coil •Compliance failures have led to an estimated
Airflow 20-30% increase in peak energy needed on hot
summer afternoons.
Fan Watt
•Estimated 30% of energy savings potential of
Draw
energy codes is lost due to non-compliance.
Photovoltaic
QII •Inadequate understanding of degradation in
performance due to poor installation
www.energycode.com Energy Code Works, Inc.
Scope of this Class
5 New Ventilation Requirements
6 New HERS Credits
7 New Forms & Registration Requirements
8 Q&A
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive Performance Installation
CF‐1R New CF‐1R Performance CF‐6R Installation
CF‐1R Addition MF‐1R Certificate
CF‐1R Alteration CF‐SR CF‐4R Field
MF‐1R Verification/HERS
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
45
46. 10/1/2009
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
46
47. 10/1/2009
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC Roles & Responsibilities
Documentation Author
Signature certifies documentation is accurate & complete
Not responsible specification of the building design features
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition
CF‐1R Alteration
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC Roles & Responsibilities
Designer
Responsible for overall building design
Responsible for specifications on CF-1R
Subject to California Business & Professions Code
www.energycode.com Energy Code Works, Inc.
47
48. 10/1/2009
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition NEW
CF‐1R Alteration NEW
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition NEW
CF‐1R Alteration NEW
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
2005 MF-1R 2 pages
Check boxes
Prescriptive
CF‐1R New
CF‐1R Addition NEW
CF‐1R Alteration NEW
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
48
49. 10/1/2009
Compliance Forms
2008 MF-1R 3 pages
Prescriptive
CF‐1R New
CF‐1R Addition NEW
CF‐1R Alteration NEW
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Prescriptive
CF‐1R New
CF‐1R Addition NEW
CF‐1R Alteration NEW
MF‐1R
CF‐SR Solar Hot Water
WS‐1R Thermal Mass
WS‐2R Weighted
Average
WS‐3R SHGC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
5 pages instead of 3
Performance
CF‐1R Performance
MF‐1R
CF‐SR
www.energycode.com Energy Code Works, Inc.
49
50. 10/1/2009
Compliance Forms
Performance
CF‐1R Performance
MF‐1R
CF‐SR
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-6R Installation forms
Installation Reworked significantly
CF‐6R Installation Now include measures previously on MF-1R
Certificate
CF 4R Field
CF‐4R Field
Verification/HERS Separated into Envelope, Lighting & HVAC
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-6R Installation forms
Installation Purpose of CF-6R forms?
CF‐6R Installation “To verify that the contractor is aware of the
Certificate requirements of the building energy standards
CF‐4R Field
CF 4R Field
Verification/HERS and they have followed the CEC approved
procedures for installation”
www.energycode.com Energy Code Works, Inc.
50
51. 10/1/2009
Compliance Forms
CF-6R Installation forms
Installation Who fills out CF-6R forms?
CF‐6R Installation General contractor or;
Certificate Specialty subcontractors
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-6R Installation forms
Installation Also…
CF‐6R Installation Completed and signed CF-6Rs must be
Certificate posted at building site for review by
CF 4R Field
CF‐4R Field
Verification/HERS inspectors. Required for final inspection
HERS raters will need the completed CF-6R
forms before they can fill out their CF-4R
forms.
When registration is required CF-6R’s must be
available
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
51
52. 10/1/2009
Compliance Forms
CF-6R example
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-6R example
Installation
CF‐6R Installation
Certificate
CF 4R Field
CF‐4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-6R example
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
52
53. 10/1/2009
Compliance Forms
CF-6R bottom line:
CF-6R forms a major part of Title-24 compliance
now. The real “teeth” in the new code.
Installation Contractors need to be familiar with CF-6R forms
CF‐6R Installation Also will need to review CF-1R during bid process
Certificate to determine if any HERS measures will affect their
CF‐4R Field
CF 4R Field work
Verification/HERS
Will require coordination between Designer,
Title-24 consultant and HERS raters
CF-6R forms filled out by hand will be unwieldy
because of requirements to file electronically
Will need a system to provide documentation
package to homeowner:
CF-1R,CF-6R, CF-4R, Operation & maintenance
information for all features and devices.
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-4R Installation forms
Installation Responsibility of HERS Rater
CF‐6R Installation Certificates of Field Verification and
Certificate Diagnostic Testing
CF 4R Field
CF‐4R Field
Verification/HERS
CF-4R filled out by hand not acceptable
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
53
54. 10/1/2009
Compliance Forms
Certificate of Compliance (CF‐1R)
Submitted to plancheck and
Prepared by Title‐24 consultant or
approved copy provided to General
designer
Contractor
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Certificate of Compliance (CF‐1R)
Submitted to plancheck and
Prepared by Title‐24 consultant or
approved copy provided to General
designer
Contractor
Installation
CF‐6R Installation
Certificate
CF 4R Field
CF‐4R Field Certificate of Installation (CF 6R)
Certificate of Installation (CF‐6R)
Verification/HERS
Filled out by contractor and sub‐ Provided to inspector & HERS Rater
contractors & later to the homeowner
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Certificate of Compliance (CF‐1R)
Submitted to plancheck and
Prepared by Title‐24 consultant or
approved copy provided to General
designer
Contractor
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field Certificate of Installation (CF 6R)
Certificate of Installation (CF‐6R)
Verification/HERS
Filled out by contractor and sub‐ Provided to inspector & HERS Rater
contractors & later to the homeowner
Certificate of Verification and Diagnostic (CF‐4R)
Completed by HERS Rater Registered with CHEERS or Calcerts
and copy provided to contractor
www.energycode.com Energy Code Works, Inc.
54
55. 10/1/2009
Compliance Forms
Installation
CF‐6R Installation
Certificate
CF‐4R Field
CF 4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Installation
CF‐6R Installation
Certificate
CF 4R Field
CF‐4R Field
Verification/HERS
www.energycode.com Energy Code Works, Inc.
Compliance Forms
CF-4R bottom line:
CF-4R also forms a major part of Title-24
compliance now.
Installation Many HERS verifications are now baseline,
required on most projects
CF‐6R Installation
Certificate Contractors will need to know their responsibilities
CF‐4R Field
CF 4R Field related to different HERS measures
Verification/HERS
Contractors need to inspect and test their work
HERS raters verifies
Good coordination essential. HERS rater will need
to be contacted well ahead of required inspections
Good record keeping crucial
CF-4R major part of utility incentive programs
www.energycode.com Energy Code Works, Inc.
55
56. 10/1/2009
Compliance Forms
Registration
New concept and new requirement
Introduced in stages thru 2010
Registration
January 1, 2010 required for low-rise residential
CF‐6R Installation buildings, multiple orientations , & HERS measures
Certificate
CF‐4R Field Starting October 1, 2010 registration required for ALL
1
Verification/HERS low-rise residential buildings with HERS measures
Registration
CF-1R, CF-6R, CF-4R required to be submitted
electronically to HERS provider (CHEERS or CalCerts)
Registry available to authorized users of HERS data
registry
Includes energy consultants, builders, owners,
contractors, installers, HERS raters, building
departments, C.E.C.
www.energycode.com Energy Code Works, Inc.
Compliance Forms
Registration
Implications:
If registration required building department will require
Registration registered copies of CF-1R , CF-6R, and CF-4R that
display their unique registration number
CF‐6R Installation
Certificate Contractors may not be set up to submit their CF-6R forms
CF‐4R Field electronically for registration
y g
Verification/HERS
Registration Can use services of HERS raters to facilitate transmittal of
CF-6R to registry. However contractor is responsible for
content of CF-6R and must sign. HERS rater cannot
certify information on a CF-6R form.
The days of filling out CF-6R on the hood of contractors
work truck are basically over
Good communication and record keeping critical
Use time left to put into place filing system/record keeping
system
www.energycode.com Energy Code Works, Inc.
Preparation for 1/1/2009
1 Energy Consultants
Download Standards, Manual, Appendixes
http://www.energy.ca.gov/title24/2008standards/index.html
// / 24/2008 /
Attend training seminars for approved software
Develop record keeping procedure for registration requirement
www.energycode.com Energy Code Works, Inc.
56
57. 10/1/2009
Preparation for 1/1/2009
2 Architects/Designers
Set up drawing files to accept all forms required on plans
Set up note blocks for ASHRAE 62.2 requirements
Window selection cannot be put off until building under
construction. Using default U-factors/SHGC for plan-check
submittals will make it difficult if not impossible to comply.
Bring Title-24 consultant on board early in design stage
www.energycode.com Energy Code Works, Inc.
Preparation for 1/1/2009
3 HVAC Contractors
Be prepared to perform rough-in duct testing (4% leakage)
HERS rater can do this for you
Provide training to your installers for proper duct sealing, airflow, refrigerant
charge to minimize HERS verification failures
Prepare proper load calcs for every job and have documentation ready.
ready
Will need system for providing access holes and labeling to avoid holdups in HERS
verifications
Be prepared to fill out electronically CF-6R for HVAC new and change-outs
Develop system to record and track CF-6R forms that will be needed later in HERS
process or incentive process
Develop good relationship with local HERS rater(s)
HERS rater cannot be part of your company in any way shape or form, cannot self-
verify. HERS raters are audited annually.
www.energycode.com Energy Code Works, Inc.
Preparation for 1/1/2009
4 Building Officials
Download Standards, Manual, Appendixes
http://www.energy.ca.gov/title24/2008standards/index.html
Building departments will need to set up access to HERS provider data registry.
Understand which documents required at plan-check and which are required at inspection (CF-
1R, CF-6R, kitchen lighting, CF-4R)
1R CF-6R lighting
Forms are much more data intensive. Get familiar with new layout of forms and all the data that is
now required.
HERS measures now baseline. Submittals that comply without them should be reviewed closely.
Inspectors will need to be familiar with all of the CF-6R forms.
If registration required must be registered CF-6R forms, not filled out by hand.
Training on ASHRAE 62.2 highly recommended. Become familiar with ventilation calculation
methods fan/control features that satisfy this requirement. Important for on-site building
inspector, not at plancheck.
www.energycode.com Energy Code Works, Inc.
57
58. 10/1/2009
Energy Code Works, Inc.
Mark Madison
CEPE, CEA, AEE, HERS Rater,
GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS
58