The document outlines the 2008 Title-24 Energy Code, focusing on new residential lighting and ventilation requirements. It details mandatory measures for lighting efficiency, compliance paths, and specifications for high efficacy fixtures, as well as ventilation requirements modeled after ASHRAE 62.2-2007. Key topics include the division of residential spaces into zones with different rules and the use of local ventilation for kitchens and bathrooms to promote energy efficiency.

1. Title-24 Building Energy Standards
Energy Code Works, Inc.
Mark Madison
CEPE, CEA, AEE, HERS Rater,
GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS

2. Housekeeping
Breaks:
12:45 p.m. (short)
1Questions:
Q&A session at end of each section
www.energycode.com © 2011 Energy Code Works, Inc.

3. Housekeeping
AIA CES credits:
1 3 HSW (Health Safety & Welfare)
3 SD (Sustainable Design)
www.energycode.com © 2011 Energy Code Works, Inc.

4. Scope of this Class
1 Overview of 2008 Title-24 Energy Code
2 New Residential Lighting Requirements
3 New Residential Ventilation Requirements
4 Q&A
www.energycode.com © 2011 Energy Code Works, Inc.

5. Compliance Paths
Two compliance paths available
Prescriptive Performance
www.energycode.com © 2011 Energy Code Works, Inc.

6. Compliance Paths
Two compliance paths available
Mandatory
Measures
Prescriptive
Prescriptive Performance
Performance
Path Path
www.energycode.com © 2011 Energy Code Works, Inc.

7. 2008 Building Energy Standards
Mandatory
Measures
 Mandatory measures always apply, regardless of compliance
approach
 No trade-offs against mandatory measures
 Residential Lighting requirements are mandatory
 Residential ventilation requirements (ASHRAE 62.2-2007) are
mandatory
www.energycode.com © 2011 Energy Code Works, Inc.

8. Scope of this Class
1 Overview of 2008 Title-24 Energy Code
2 New Residential Lighting Requirements
3 New Residential Ventilation Requirements
4 Q&A
www.energycode.com © 2011 Energy Code Works, Inc.

9. Residential Lighting
Scope of 2008 Residential Lighting Standards
Applies to:
New construction
Additions
Alterations
Replacement fixtures, not replacement of lamps in fixture
www.energycode.com © 2011 Energy Code Works, Inc.

10. Residential Lighting
Scope of 2008 Residential Lighting Standards
Applies only to permanently installed luminaires
Portable lighting exempt
(plug-in table lamps, floor lamps)
Wattage of luminaires only a factor in kitchens
Does not apply to luminaires that are integral to appliances
(refrigerators, range hoods, garage door openers)
www.energycode.com © 2011 Energy Code Works, Inc.

11. Residential Lighting
Scope of 2008 Residential Lighting Standards
2008 Standards divide home into 4 zones
Different rules for each zone
www.energycode.com © 2011 Energy Code Works, Inc.

12. Residential Lighting
50% Rule
High Efficacy
New allowances
#1 Bathrooms, garages, laundry
rooms, closets & utility rooms
#2 All Other Spaces
Minimum efficacy
Required controls
www.energycode.com © 2011 Energy Code Works, Inc.

13. Residential Lighting
50% Rule
High Efficacy
New allowances
What is a kitchen?
Title-24 Standards define a residential kitchen as
“a room or area used for food storage and
preparation and washing dishes, including
associated counter tops and cabinets,
refrigerator, stove, oven and floor areas”
www.energycode.com © 2011 Energy Code Works, Inc.

14. Residential Lighting
What is a kitchen?
“a room or area used for food
storage and preparation and
washing dishes, including
associated counter topes and
cabinets, refrigerator, stove,
oven and floor areas”
www.energycode.com © 2011 Energy Code Works, Inc.

15. Residential Lighting
Switching is
important!
“any other lighting on the
same switch as kitchen
lighting is also kitchen lighting
whether or not the luminaires
are in the kitchen area”
www.energycode.com © 2011 Energy Code Works, Inc.

16. 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
Switches may be mounted on
the same faceplate but switched
independently
www.energycode.com © 2011 Energy Code Works, Inc.

17. Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
www.energycode.com © 2011 Energy Code Works, Inc.

18. Residential Lighting
50% Rule
High Efficacy
New allowances
High efficacy fixtures
No screw in CF luminaires
Must be dedicated, pin-type
“Standards do not recognize any adaptor as being
able to permanently convert one type of luminaire to
another type regardless of manufacturers
declarations”
www.energycode.com © 2011 Energy Code Works, Inc.

19. Residential Lighting
50% Rule
High Efficacy
New allowances
High efficacy fixtures
“Electronic Ballasts required for all fluorescent lamps
with power rating of 13w or more”
www.energycode.com © 2011 Energy Code Works, Inc.

20. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed fixtures in insulated
ceilings:
Must be zero clearance, IC rated
Certified air tight (AT) construction
Sealed with gasket or caulk
between housing and ceiling
www.energycode.com © 2011 Energy Code Works, Inc.

21. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed fixtures in insulated
ceilings: Air Tight
www.energycode.com © 2011 Energy Code Works, Inc.

22. Residential Lighting
50% Rule
High Efficacy
New allowances
www.energycode.com © 2011 Energy Code Works, Inc.

23. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed fixtures in insulated
ceilings:
Label best verified at rough-in
If verified at final the inspector may
have to remove trim kit to see
labels.
Not all trim kits are certified airtight.
If not must use gasket or caulk.
Inspectors may find certified trim
kits on non-certified AT fixtures
www.energycode.com © 2011 Energy Code Works, Inc.

24. Residential Lighting
50% Rule
High Efficacy
New allowances
Recommendations for luminaire
specifications
To avoid costly change orders:
1. Include all applicable Title-24
lighting requirements in the
general notes on the drawings
and other bid documents
2. Include Title-24 lighting
requirements with each luminaire
listed in the lighting schedule text
www.energycode.com © 2011 Energy Code Works, Inc.

25. Residential Lighting
50% Rule
High Efficacy
New allowances
Recommendations
for luminaire
specifications:
www.energycode.com © 2011 Energy Code Works, Inc.

26. Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
Table 6-2 for LED efficacy
www.energycode.com © 2011 Energy Code Works, Inc.

27. Residential Lighting
50% Rule
High Efficacy
New allowances
***LED fixtures must be C.E.C. Certified***
Not all LED fixtures are high efficacy
www.energycode.com © 2011 Energy Code Works, Inc.

28. Residential Lighting
50% Rule
High Efficacy
New allowances
www.energycode.com © 2011 Energy Code Works, Inc.

29. Residential Lighting
50% Rule
High Efficacy
New allowances
http://www.energy.ca.gov/applicances/database/
www.energycode.com © 2011 Energy Code Works, Inc.

30. Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
All fixtures are either:
High efficacy or
Low efficacy
Must be labeled as such on lighting fixture schedule
Why?
www.energycode.com © 2011 Energy Code Works, Inc.

31. Residential Lighting
50% Rule
High Efficacy
New allowances
What is high efficacy?
All fixtures are either:
High efficacy or
Low efficacy
1. Important for kitchen lighting calculations
2. For other rooms it determines control
requirements
3. Plancheck requirement
www.energycode.com © 2011 Energy Code Works, Inc.

32. Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
Blank electrical boxes calculated as 180
watts low efficacy (page 6-13 2008 Manual)
www.energycode.com © 2011 Energy Code Works, Inc.

33. Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
Assumed wattage for recessed luminaires (page 6.-15 2008 Manual)
www.energycode.com © 2011 Energy Code Works, Inc.

34. Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
Assumed wattage for recessed luminaires (page 6.-15 2008 Manual)
www.energycode.com © 2011 Energy Code Works, Inc.

35. Residential Lighting
50% Rule
High Efficacy
New allowances
New rules
New wattage assumptions for CF or HID fixture that can
accommodate a variety of luminaires
For example 26w, 32w & 42 watt fixture
26w + 32w + 42w = 100w divided by 3 = 33.33w
Or use wattage of largest luminaire initially installed
www.energycode.com © 2011 Energy Code Works, Inc.

36. 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 luminaires and vacancy sensors in garages,
laundry rooms, closets and utility rooms
www.energycode.com © 2011 Energy Code Works, Inc.

37. 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
www.energycode.com © 2011 Energy Code Works, Inc.

38. Residential Lighting
50% Rule
High Efficacy
New allowances
New allowances
Internal cabinet lighting
allowance
20 watts per linear foot of
illuminated cabinet
Can be vertical or horizontal
measurement
Not both
www.energycode.com © 2011 Energy Code Works, Inc.

39. Residential Lighting
50% Rule
High Efficacy
New allowances
www.energycode.com © 2011 Energy Code Works, Inc.

40. Residential Lighting
www.energycode.com © 2011 Energy Code Works, Inc.

41. Residential Lighting
50% Rule
High Efficacy
New allowances
Question:
“I’m adding new lighting fixtures in my existing
kitchen, some of the existing fixtures will remain.
Will the new fixtures have to be high efficacy?”
www.energycode.com © 2011 Energy Code Works, Inc.

42. Residential Lighting
50% Rule
High Efficacy
New allowances
Answer:
Yes, you will have to install high efficacy new fixtures
until you meet the 50% high efficacy level for all the
lighting (existing & new) in the kitchen.
www.energycode.com © 2011 Energy Code Works, Inc.

43. Residential Lighting
50% Rule
High Efficacy
New allowances
www.energycode.com © 2011 Energy Code Works, Inc.

44. Residential Lighting
50% Rule
High Efficacy
New allowances
www.energycode.com © 2011 Energy Code Works, Inc.

45. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
www.energycode.com © 2011 Energy Code Works, Inc.

46. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
ICAT label
www.energycode.com © 2011 Energy Code Works, Inc.

47. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
ICAT label
Screw-in type =
Low-Efficacy
www.energycode.com © 2011 Energy Code Works, Inc.

48. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
www.energycode.com © 2011 Energy Code Works, Inc.

49. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
ICAT label
www.energycode.com © 2011 Energy Code Works, Inc.

50. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
ICAT label
Pin type =
High efficacy
www.energycode.com © 2011 Energy Code Works, Inc.

51. Residential Lighting
50% Rule
High Efficacy
New allowances
Recessed can
lighting
ICAT label
LED type =
High efficacy if
C.E.C. Certified
LED Fixture
www.energycode.com © 2011 Energy Code Works, Inc.

52. Residential Lighting
50% Rule
High Efficacy
New allowances
Old 2005 Kitchen Lighting
Documentation
No more WS-5R (1 page)
www.energycode.com © 2011 Energy Code Works, Inc.

53. Residential Lighting
2005 Standards
WS-5R is currently
submitted at plan check
www.energycode.com © 2011 Energy Code Works, Inc.

54. Residential Lighting
New form:
CF-6R-LTG-1
Not submitted at plan-
check, only during field
inspection
www.energycode.com © 2011 Energy Code Works, Inc.

55. Residential Lighting
CF-6R-LTG-1
For 2008
not submitted at
plan check
Now a construction
document
www.energycode.com © 2011 Energy Code Works, Inc.

56. Residential Lighting
New form: CF-6R-LTG-01 (3 pages)
www.energycode.com © 2011 Energy Code Works, Inc.

57. Residential Lighting
50% Rule
High Efficacy
New allowances
Filling out the CF-6R-LTG-1 form
Kitchens (part 1 of 3)
www.energycode.com © 2011 Energy Code Works, Inc.

58. Residential Lighting
#1 Bathrooms, Garages, Laundry
rooms, closets & utility rooms
Bathrooms, Garages, Laundry Rooms, closets
(less than 70 sq. ft.) & utility rooms
Rules unchanged for 2008
All 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
www.energycode.com © 2011 Energy Code Works, Inc.

59. Residential Lighting
Vacancy Sensor, not occupancy sensor
www.energycode.com © 2011 Energy Code Works, Inc.

60. Residential Lighting
Vacancy Sensor, not occupancy sensor
www.energycode.com © 2011 Energy Code Works, Inc.

61. Residential Lighting
#2 “Other Spaces”
Living rooms, dining room,
bedrooms,
Other Spaces
High efficacy fixture with regular switch or…
Incandescent with a vacancy sensor or a dimmer
www.energycode.com © 2011 Energy Code Works, Inc.

62. Residential Lighting
#2 “Other Spaces”
Living rooms, bedrooms,
Attics
Regardless of square footage attics are considered
“other spaces”
High efficacy fixture with regular switch or…
Incandescent with dimmer or vacancy sensor
www.energycode.com © 2011 Energy Code Works, Inc.

63. Residential Lighting
#2 Other Spaces
Enclosed Patio (unconditioned)
Also considered “other space”
High efficacy fixture with regular switch or…
Incandescent with dimmer or vacancy sensor
www.energycode.com © 2011 Energy Code Works, Inc.

64. Residential Lighting
#2 Other Spaces
Night Lights
Hard wired: High efficacy OR consume no more
than 5 watts. No screw-base socket
www.energycode.com © 2011 Energy Code Works, Inc.

65. 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:
www.energycode.com © 2011 Energy Code Works, Inc.

66. Residential Lighting
Minimum efficacy
Required controls
www.energycode.com © 2011 Energy Code Works, Inc.

67. 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
“Section 119 also allows for a temporary override
switch to bypass motion sensor providing sensor is
automatically reactivated within 6 hours”
For parties in your backyard that last longer than 30 minutes
www.energycode.com © 2011 Energy Code Works, Inc.

68. Residential Lighting
Minimum efficacy
Required controls
Exempt outdoor lighting
Any fixtures not attached to building
Decorative landscape lighting
Pool/Spa lighting
(“lighting installed directly above the water in outdoor pool, spa, hot tub, or
fountain. Pool lighting in an area extending between 5 feet and 10 feet
horizontally from inside walls of a pool. Spa, hot tub, or fountain lighting within
5 feet from inside walls& underwater luminaires”)
www.energycode.com © 2011 Energy Code Works, Inc.

69. Residential Lighting
Address Signs
Address Signs
Two compliance options
Option #1 Section 148 maximum allowed lighting
power: 12 watts per square foot of sign area (internally
illuminated)
Or…
High efficacy luminaires (no wattage limit)
www.energycode.com © 2011 Energy Code Works, Inc.

70. Residential Lighting
Address Signs
Address Signs
Two compliance options
Option #2 Not contain a screw-based socket and
consume no more than five watts of power
www.energycode.com © 2011 Energy Code Works, Inc.

71. Title-24 Building Energy Standards
Energy Code Works, Inc.
Break

72. Scope of this Class
1 Overview of 2008 Title-24 Energy Code
2 New Residential Lighting Requirements
3 New Residential Ventilation Requirements
4 Q&A
www.energycode.com © 2011 Energy Code Works, Inc.

73. 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
www.energycode.com © 2011 Energy Code Works, Inc.

74. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007 scope:
•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
•Additions smaller than 1000 sq. ft. exempt
8
•Ventilation fans must meet sound requirements
Continuously operation: 1.0 sone
Intermittent fans: 3.0 sone
www.energycode.com © 2011 Energy Code Works, Inc.

75. Ventilation
5 New Ventilation Requirements
•ASHRAE 62.2-2007 also
referenced in Energy Star
Indoor airPlus program
8
www.energycode.com © 2011 Energy Code Works, Inc.

76. Ventilation
•ASHRAE 62.2-2007 also
referenced in Energy Star
Indoor airPlus program
8
www.energycode.com © 2011 Energy Code Works, Inc.

77. Ventilation
8
www.energycode.com © 2011 Energy Code Works, Inc.

78. Ventilation
5 New Ventilation Requirements
Question:
•Can I exhaust my bathroom fan to the attic where the attic
vents will allow the exhausted air to vent to the outdoors?
8
www.energycode.com © 2011 Energy Code Works, Inc.

79. Ventilation
5 New Ventilation Requirements
Question:
•Can I exhaust my bathroom fan to the attic where the attic
vents will allow the exhausted air to vent to the outdoors?
Answer:
•No, exhaust air (local and whole house) must exhaust to
the outdoors.
•Why? 8
www.energycode.com © 2011 Energy Code Works, Inc.

80. Ventilation
5 New Ventilation Requirements
Bad
8
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81. Ventilation
5 New Ventilation Requirements
Good
8
www.energycode.com © 2011 Energy Code Works, Inc.

82. 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.
www.energycode.com © 2011 Energy Code Works, Inc.

83. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007 scope:
•Ventilation air must come from out of doors, not
transferred from adjacent dwelling units, garages or
crawlspaces
•Combustion appliances properly vented and steps taken
to prevent back drafting
•Walls & 8
openings between garage and house sealed
www.energycode.com © 2011 Energy Code Works, Inc.

84. Ventilation
5 New Ventilation Requirements
Back drafting problems
8
www.energycode.com © 2011 Energy Code Works, Inc.

85. Ventilation
5 New Ventilation Requirements
Back drafting solutions
8
www.energycode.com © 2011 Energy Code Works, Inc.

86. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007 scope:
•Habitable rooms have windows with ventilation area of at
least 4% of floor area for that room (but no less than 5
square feet)
•Habitable rooms include living rooms, family rooms,
bedrooms, kitchens.
•Closets,8crawl spaces, garages, utility rooms, attics are
generally not habitable spaces
www.energycode.com © 2011 Energy Code Works, Inc.

87. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007 scope:
•Openings do not have to be provided by windows
•Can also be operable, insulated, weatherstripped panels
•Can by skylights, thru-wall inlets
•Standards mandate that the openable area of the window,
not the size of the entire window unit be 4% of the floor
8
area.
•These requirements are different from egress
requirements for Health and Safety Code
www.energycode.com © 2011 Energy Code Works, Inc.

88. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
2 areas of concern:
Local ventilation requirements
Whole building mechanical ventilation requirements
8
www.energycode.com © 2011 Energy Code Works, Inc.

89. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Each kitchen and bathroom must have local exhaust
Can use individual exhaust fans or…
Exhaust system that serves multiple rooms
8
www.energycode.com © 2011 Energy Code Works, Inc.

90. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Kitchen:
Minimum of 100 cfm for kitchen range hood exhaust
Can also use a ceiling or wall mounted exhaust fan for
8
kitchen but must supply at least 5 air changes of the
kitchen volume per hour
www.energycode.com © 2011 Energy Code Works, Inc.

91. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Kitchen:
Re-circulating range hoods do not satisfy AHSRAE 62.2
requirements of local exhaust regardless of filtration method
Can be used but in addition to room exhaust for kitchen
8
www.energycode.com © 2011 Energy Code Works, Inc.

92. Ventilation
5 New Ventilation Requirements
8
www.energycode.com © 2011 Energy Code Works, Inc.

93. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Kitchen:
Other option:
Wall or ceiling mounted exhaust serving entire kitchen
Example: 12’ x 14’ kitchen with 10 foot ceiling.
8
What size ceiling or wall exhaust fan is required?
www.energycode.com © 2011 Energy Code Works, Inc.

94. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Kitchen:
Example: 12’ x 14’ kitchen with 10 foot ceiling.
What size ceiling fan is required?
8
Answer: Kitchen volume is 12’x 14’ x 10’ = 1680 cubic feet
5 air changes per hour converts to an airflow rate per
minute as follows:
www.energycode.com © 2011 Energy Code Works, Inc.

95. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Kitchen:
1680 cubic feet of air x 5 air changes per hour = 8,400 cubic feet
per hour
8
8,400 cubic feet divided by 60 minutes in an hour = 140 cfm
Your choice:
Either 100 cfm for range hood or 140 cfm for ceiling/wall exhaust
www.energycode.com © 2011 Energy Code Works, Inc.

96. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Bathrooms:
What is a bathroom?
8
www.energycode.com © 2011 Energy Code Works, Inc.

97. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Bathrooms:
What is a bathroom?
“Any room containing a bathtub, shower, spa, or other similar
8
source of moisture”
www.energycode.com © 2011 Energy Code Works, Inc.

98. Ventilation
5 New Ventilation Requirements
Bathrooms:
What is a bathroom?
Both bathrooms
require local exhaust
Bathtub, not sink
triggers local exhaust
requirement 8
www.energycode.com © 2011 Energy Code Works, Inc.

99. Ventilation
5 New Ventilation Requirements
Bathrooms:
What is a bathroom?
Half baths with toilet
and sink do not
require local exhaust
8
www.energycode.com © 2011 Energy Code Works, Inc.

100. Ventilation
5 New Ventilation Requirements
Bathrooms:
What is a bathroom?
Half bath with toilet and
sink does not require local
exhaust.
Adjacent full bath requires
local exhaust. 8
www.energycode.com © 2011 Energy Code Works, Inc.

101. Ventilation
5 New Ventilation Requirements
Bathrooms:
What is a bathroom?
WC room does not
require local exhaust.
Shower area does
require local exhaust.
8
www.energycode.com © 2011 Energy Code Works, Inc.

102. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Local ventilation requirements
Whole building mechanical ventilation requirements
8
www.energycode.com © 2011 Energy Code Works, Inc.

103. 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
www.energycode.com © 2011 Energy Code Works, Inc.

104. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Exhaust ventilation
8
www.energycode.com © 2011 Energy Code Works, Inc.

105. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Supply ventilation
8
www.energycode.com © 2011 Energy Code Works, Inc.

106. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Combination supply/exhaust ventilation
8
www.energycode.com © 2011 Energy Code Works, Inc.

107. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Combination supply/exhaust ventilation
Central Fan Integrated
Ventilation
Requires HERS Fan
Watt Draw testing
Must use less than 0.58
watts per cfm or…
8
Use Title-24
performance run and
use trade-offs
www.energycode.com © 2011 Energy Code Works, Inc.

108. 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
occupants = the number of bedrooms plus one person:
8
www.energycode.com © 2011 Energy Code Works, Inc.

109. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
No bedrooms?
8
www.energycode.com © 2011 Energy Code Works, Inc.

110. 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
occupants = the number of bedrooms plus one person:
8
www.energycode.com © 2011 Energy Code Works, Inc.

111. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question: (Pop Quiz)
What is the required continuous ventilation rate required for
a 3 bedroom, 1,800 sq. ft. townhouse?
Formula:
One cubic foot per minute (cfm) for each 100 sq. ft. of floor
area plus87.5 cfm for each occupant. The number of
occupants = the number of bedrooms plus one person:
www.energycode.com © 2011 Energy Code Works, Inc.

112. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
What is the required continuous ventilation rate required for
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
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113. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
How would you satisfy this 48 cfm ventilation requirement?
8
www.energycode.com © 2011 Energy Code Works, Inc.

114. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Ventilation flow rate calculation
Question:
How would you satisfy the 48 cfm ventilation requirement?
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 © 2011 Energy Code Works, Inc.

115. 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
operation.
Required air flow rate can be 10 to 20 times greater when
fans operate less than 6 hours per day.
Minimum8requirement that fan run at least 1 hour in 12
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116. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
8
www.energycode.com © 2011 Energy Code Works, Inc.

117. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
8
www.energycode.com © 2011 Energy Code Works, Inc.

118. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example
Required ventilation rate is 50 cfm
Ventilation fan runs 80% of the time
What must the airflow rate be?
8
www.energycode.com © 2011 Energy Code Works, Inc.

119. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example: 50 cfm fan running 80% of the time
Fractional on-time is .8 (80%)
Ventilation effectiveness (e) is 1
8
www.energycode.com © 2011 Energy Code Works, Inc.

120. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example: 50 cfm fan running 80% of the time
Fractional on-time is .8 (80%)
Ventilation effectiveness (e) is 1
Multiply fractional on-time (.8) by ventilation effectiveness
(1) 0.8 x 1 = 0.8
8
Divide required fan rate by 0.8
50 cfm divided by 0.8 = 63 cfm required
www.energycode.com © 2011 Energy Code Works, Inc.

121. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example
Required ventilation rate is 50 cfm
Ventilation fan runs 12 hours per day (50% of the time)
What must the airflow rate be?
8
www.energycode.com © 2011 Energy Code Works, Inc.

122. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example: 50 cfm fan running 50% of the time
Fractional on-time is .5 (50%)
Ventilation effectiveness (e) is 0.5
8
www.energycode.com © 2011 Energy Code Works, Inc.

123. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2-2007
Intermittent fan flow rate calculation
Example: 50 cfm fan running 50% of the time
Fractional on-time is .5 (50%)
Ventilation effectiveness (e) is 0.5
Multiply fractional on-time (.5) by ventilation effectiveness
(1) 0.5 x 0.5 = 0.25
8
Divide required fan rate by 0.25
50 cfm divided by 0.25 = 200 cfm required
www.energycode.com © 2011 Energy Code Works, Inc.

124. 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 © 2011 Energy Code Works, Inc.

125. Ventilation
5 New Ventilation Requirements
8
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126. Ventilation
5 New Ventilation Requirements
8
www.energycode.com © 2011 Energy Code Works, Inc.

127. 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)
Who will perform the ventilation calcs? (Title-24 consultant,
8
HVAC designer, architect, etc)
Will need tested airflow of all exhaust fans from manufacturer
Or available at: www.hvi.org
www.energycode.com © 2011 Energy Code Works, Inc.

128. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the designer?
8
www.energycode.com © 2011 Energy Code Works, Inc.

129. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
8
www.energycode.com © 2011 Energy Code Works, Inc.

130. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
8
www.energycode.com © 2011 Energy Code Works, Inc.

131. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Important!
Must use certified
airflow at 0.25” w.c.
QTR050F appears to
comply but fails using
0.25” w.c. criteria
Must use QTRE080
instead
www.energycode.com © 2011 Energy Code Works, Inc.

132. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the inspector?
Note block
Calcs
Specs
CF-6R MECH-5 (at inspection)
Airflow verified in one of two ways:
8
1. Test airflow of system (flow hood) or
2. Certified airflow rating of fan from manufacturer (@ 0.25” w.g.)
3. Also available at: www.hvi.org
www.energycode.com © 2011 Energy Code Works, Inc.

133. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the inspector?
8
www.energycode.com © 2011 Energy Code Works, Inc.

134. Ventilation
5 New Ventilation Requirements
8
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135. Ventilation
5 New Ventilation Requirements
8
www.energycode.com © 2011 Energy Code Works, Inc.

136. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can you interpolate and extrapolate using Table 4-9 ?
8
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137. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can you interpolate and extrapolate using Table 4-9 ?
8
www.energycode.com © 2011 Energy Code Works, Inc.

138. Ventilation
5 New Ventilation Requirements
Title-24 2008 Standards
Can you interpolate and extrapolate using Table 4-9 ?
8
www.energycode.com © 2011 Energy Code Works, Inc.

139. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can you interpolate and extrapolate using Table 4-9 ?
8
www.energycode.com © 2011 Energy Code Works, Inc.

140. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can you interpolate and extrapolate using Table 4-9 ?
8
www.energycode.com © 2011 Energy Code Works, Inc.

141. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can you interpolate and extrapolate using Table 4-9 ?
Bottom line:
C.E.C. allows you to interpolate between
columns in table 4-9 but not to extrapolate
beyond columns
For larger airflows than shown on table 4-9
you must using flow hood or flow grid
(larger than 125 cfm)
8
www.energycode.com © 2011 Energy Code Works, Inc.

142. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the installer?
Verify minimum duct sizes
Become familiar with table 4-9 (Called table 7.1 in ASHRAE 62.2)
8
www.energycode.com © 2011 Energy Code Works, Inc.

143. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Duct sizing using table 4-9
Underlying principles:
1. Larger duct diameter allows longer duct length
2. Smooth ducts perform better than flexible
3. Bends/elbows reduce allowable duct length
4. Duct sizing required for local exhaust (bathrooms and
8
kitchen) and whole house ventilation exhaust
www.energycode.com © 2011 Energy Code Works, Inc.

144. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Duct sizing using table 4-9
Example:
50 cfm bathroom exhaust requirement (continuous)
Flex duct w/ two “elbows”
What size duct diameter & length will be allowed?
8
www.energycode.com © 2011 Energy Code Works, Inc.

145. Ventilation
5 New Ventilation Requirements
Duct sizing using table 4-9
Example:
50 cfm bathroom exhaust requirement (continuous)
Flex duct w/ two “elbows”
Deduct 15’ of allowable duct length per elbow
8
www.energycode.com © 2011 Energy Code Works, Inc.

146. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Duct sizing using table 4-9
Example:
50 cfm bathroom exhaust requirement (continuous)
Flex duct w/ two “elbows”
50 cfm requires minimum of 4” diameter duct
8
Allowable length is 70 feet
Deduct 30 feet of allowable length (2 elbows x 15 feet ea)
Net allowable length = 40 feet (flex)
Smooth duct allowed length = 105 feet
www.energycode.com © 2011 Energy Code Works, Inc.

147. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the inspector?
Verify duct size calculations on CF-6R-MECH-5 with actual duct
installations
www.energycode.com © 2011 Energy Code Works, Inc.

148. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the inspector?
Verify duct size calculations on CF-6R-MECH-5 with actual duct
installations
www.energycode.com © 2011 Energy Code Works, Inc.

149. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
What does this mean for the inspector?
Restrictions for multiple exhausts sharing a exhaust duct system
8
www.energycode.com © 2011 Energy Code Works, Inc.

150. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Each fan must be equipped with
a backdraft damper
Air exhausted from one
bathroom cannot be allowed to
go into another space
Exhaust fans in multiple dwelling
units may not share a common
duct
8
www.energycode.com © 2011 Energy Code Works, Inc.

151. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Can use an in-line centrifugal
fan with switch in each bathroom
Can be used for local exhaust
and whole house ventilation with
timer control
Around $160 8
www.continentalfan.com
www.fantechus.com
www.energycode.com © 2011 Energy Code Works, Inc.

152. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
8
www.energycode.com © 2011 Energy Code Works, Inc.

153. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
If furnace, air handling
unit or return ducts are
located in garage the
entire duct system must
meet be sealed and
HERS duct tested.
Not a HERS credit
Mandatory
8
6% of total supply fan
flow only for system that
has FAU in garage
www.energycode.com © 2011 Energy Code Works, Inc.

154. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
8
www.energycode.com © 2011 Energy Code Works, Inc.

155. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 documentation
Filling out the CF-6R-MECH-05
8
www.energycode.com © 2011 Energy Code Works, Inc.

156. Ventilation
5 New Ventilation Requirements
ASHRAE 62.2 Guidebook
8
www.energycode.com © 2011 Energy Code Works, Inc.

157. Ventilation
5 ASHRAE 62.2 Noteblocks
8
www.energycode.com © 2011 Energy Code Works, Inc.

158. Ventilation
5 ASHRAE 62.2 Noteblocks
8
Page 3 of ASHRAE 62.2 Guidebook
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159. Ventilation
5 ASHRAE 62.2 Noteblocks
8
Page 10 of ASHRAE 62.2 Guidebook
www.energycode.com © 2011 Energy Code Works, Inc.

160. Ventilation
5 ASHRAE 62.2 Noteblocks
8
www.energycode.com © 2011 Energy Code Works, Inc.

161. Ventilation
5 ASHRAE 62.2 Noteblocks
“Compliance, operating,
maintenance, and
ventilation information on
the ventilation approach
being used…must be
provided to the dwelling
owner in paper or
electronic format”
Section 10-103b of
Standards 8
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162. Ventilation
5 New Ventilation Requirements
www.energycode.com
8
www.energycode.com © 2011 Energy Code Works, Inc.

163. Compliance Forms
CF-6R bottom line:
CF-6R forms a major part of Title-24 compliance now. The
real “teeth” in the new code.
Contractors need to be familiar with CF-6R forms and have
Installation information gathered to fill out form.
CF-6R Installation Also will need to review CF-1R during bid process to
Certificate determine if any HERS measures will affect their work
CF-4R Field
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
inspector, HERS rater, & homeowner & registry if necessary
Homeowner receives CF-1R,CF-6R, CF-4R, operation &
maintenance information for all features and devices.
www.energycode.com © 2011 Energy Code Works, Inc.

164. Compliance Forms
CF-6R Installation forms
Installation
CF-6R Installation
Question:
Certificate Can the homeowner sign the
CF-4R Field
Verification/HERS CF-6R form(s)?
www.energycode.com © 2011 Energy Code Works, Inc.

165. Compliance Forms
CF-6R Installation forms
Installation Question:
Can the homeowner sign the CF-6R form(s)?
CF-6R Installation
Certificate Answer: yes
CF-4R Field
Verification/HERS
www.energycode.com © 2011 Energy Code Works, Inc.

166. 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
Verification/HERS
www.energycode.com © 2011 Energy Code Works, Inc.

167. 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 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 © 2011 Energy Code Works, Inc.

168. 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 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 © 2011 Energy Code Works, Inc.

169. 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
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 © 2011 Energy Code Works, Inc.

170. 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
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 © 2011 Energy Code Works, Inc.

171. Preparation for 1/1/2010
1 Energy Consultants
Download Standards, Manual, Appendixes
http://www.energy.ca.gov/title24/2008standards/index.html
Attend training seminars for approved software
Develop record keeping procedure for registration requirement
www.energycode.com © 2011 Energy Code Works, Inc.

172. Preparation for 1/1/2010
2 Architects/Designers
Set up drawing files to include note blocks for all lighting
fixtures
Set up note blocks for ASHRAE 62.2 requirements
Even though CF-6R-LTG-1 form isn’t required to be submitted
until inspection, you’ll need to be familiar with the rules and
calculations in order to design & spec a lighting system that will
comply
www.energycode.com © 2011 Energy Code Works, Inc.

173. Preparation for ASHRAE 62.2
3 HVAC Contractors
If you have ducts that run thru a garage be prepared to perform rough-in duct
testing (4% leakage) and later a HERS rater will need to verify with a 6% duct test.
This is a mandatory ASHRAE 62.2 requirement
Become familiar with CF-6R-MECH-5 form and airflow calculation methods
Become familiar with fan controls that satisfy requirements of ASHRAE 62.2
(timers with overrides)
Will need system for providing owner with instructions on proper operation of
ventilation system
Be alert to backdraft issues resulting from large, commercial grade exhaust hoods
in kitchens
Be prepared to fill out and send CF-6R-MECH-5 forms electronically.
No longer practical to fill these forms out by hand
www.energycode.com © 2011 Energy Code Works, Inc.

174. Preparation for ASHRAE 62.2
4 Building Officials
Download Standards, Manual, Appendixes
http://www.energy.ca.gov/title24/2008standards/index.html
Download copy of ASHRAE 62.2-2007 http://www.webstore.ansi.org
Understand which documents required at plan-check and which are required at inspection
(CF-6R-LTG-1, CF-6R-MECH-5)
Forms are much more data intensive. Get familiar with new layout of forms and all the data that is
now required. Address wet signature verses electronic signature issue ahead of time.
Be aware of difference between ASHRAE 62.2 requirement for duct testing verses normal duct
testing as a Title-24 credit. (ducts or furnace in garage)
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 © 2011 Energy Code Works, Inc.

175. Preparation for ASHRAE 62.2
5 Resources
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176. Preparation for ASHRAE 62.2
5 Resources
www.energycode.com © 2011 Energy Code Works, Inc.

177. Preparation for ASHRAE 62.2
5 Resources
www.energycode.com © 2011 Energy Code Works, Inc.

178. Preparation for ASHRAE 62.2
5 CABEC Membership
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179. Preparation for ASHRAE 62.2
5 CABEC Membership
Building Department membership only $110 per year.
Access to quarterly newsletter keeping you up to date on
energy code news and updates
Title-24 database for Q&A
Priority registration and discounted rates for training
designed specifically for building officials.
www.cabec.org
www.energycode.com © 2011 Energy Code Works, Inc.

180. Preparation for ASHRAE 62.2
6 Training Schedule
Upcoming webinar training topics:
Title-24 residential lighting/ASHRAE 62.2 requirements
(Next webinar: (Thursday, November 24, 2011)
Other subjects:
Beyond Title-24, October 27th
Plan checking Title-24 submittals
Plan checking Title-24 for additions/Remodels
Plan checking HERS measures
(Duct testing, QII, Air-flow, Refrigerant charge)
www.energycode.com
www.energycode.com © 2011 Energy Code Works, Inc.

181. AIA CES Credits
AIA CES credits:
1 Send name, firm name and AIA
membership number to:
aia@energycode.com
We will credit this course to your
AIA CES account
3 units HSW and SD
www.energycode.com © 2011 Energy Code Works, Inc.

182. Energy Code Works, Inc.
Mark Madison
CEPE, CEA, AEE, HERS Rater,
GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS