Discover lighting
control solutions
PUTTING A STOP TO ENERGY WASTE®
energy code
compliance
C od e Smar t
Over the past ten years, most
jurisdictions have adopted reference
standards such as ANSI/ASHRAE/IESNA*
90.1 (ASHRAE) and International Energy
Conservation Code (IECC). This means
that design professionals, building
owners and operators, and facility
managers need up to date tools to ensure
code compliance.
WattStopper’s CodeSmart energy code
initiative provides information you can
trust:
• up to date code requirements for all
major codes
• design guidance in developing codecompliant projects
• technical expertise in implementing
code-compliant projects
* American National Standards Institute (ANSI)
American Society of Heating, Refrigerating and AirConditioning Engineers (ASHRAE)
Illuminating Engineering Society of North America (IESNA)
2
CONTENTS
4-5
Commercial Energy Code Status
6 - 15
Code Compliance Guide
Code-compliant control solutions
16 - 23
For interior applications
18-19
Automatic shutoff
20
Space controls
21
Light level reduction
22
Daylighting
23
Plug loads/receptacle control
Code-compliant control solutions
for exterior applications
Exterior Lighting Control
Parking Garage
24 - 29
26-27
28-29
Opportunities beyond Code Compliance
30-31
3
Status of State Energy Codes (Commercial)
as of November 1, 2011
4
With mandatory energy code requirements
exceeding code requirements represents
on the state, regional, and local levels,
a business opportunity as well (see pg. 30
for more information on the
virtually every facility faces
lighting control requirements.
With federal tax incentives
available under EPAct 2005,
understanding, meeting, and
More and more
jurisdictions have
adopted mandatory
energy codes
requiring automatic
lighting controls
Commercial Building Tax
Deduction).
Lighting control code provisions at a glance
ASHRAE 90.1 (2004/2007/2010)
• Auto-on to 50% or less or
Manual-On (2010 only)
• Automated shutoff
• Space Control
• Exterior Lighting Control
• Daylighting (2010 only)
• Receptacle Control (2010 only)
• Commissioning (2010 only)
IECC (2006/2009/2012)
• ASHRAE compliance OR:
• Automated shutoff
• Space control
• Exterior Lighting Control
• Light level reduction
• Daylighting (2009/2012)
• Commissioning (2012 only)
California Title 24-2008
• Automated shutoff
• Space control
• Exterior lighting control
• Light level reduction control
• Daylighting
• Commissioning
Refer to pages 6-15 for more details on major code requirements.
5
CodeCompliance
ComplianceGuide
Guide
Code
ASHRAE
90.1-2010
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
California
Title 24 2008
Section 9
Section 9
Section 505 (2006/2009)
Section C405 (2012)
Part 6
New construction
X
X
X
X
Alterations involving ≥ 10% of connected lighting load
X
X
X (2009/2012)
X
X (2012)
X
Mandatory Lighting Control Provisions
Requirements
Alterations involving ≥ 50% of connected lighting load
Automatic Lighting Shutoff*
Required in all spaces
X
Required in buildings > 5,000 sq ft
X
X (2006/2009)
X
X
X (2012) (automatic time
switch control device)
X
independent program schedule for spaces > 25,000 sq ft
X
X
X (2006/2009)
X
schedule cannot cover more than one floor
X
X
X (2006/2009)
X
X
X
X
X
X
X (2006/2009)
X
lighting intended for 24 hour operation
X
X
automatic shutoff would endanger safety or security
X
X
X (2006/2009)
spaces where patient care is rendered
X
X
X (2006/2009)
Scheduled shutoff (time of day)
Occupancy Sensors
time delay 30 min max
Signal from another control or alarm system (such as BAS)
Exceptions (not requiring an automatic control device):
sleeping unit
X
X (0.3W/sq ft can
remain on)
X (2006/2009)
X
Additional Control
Controls required to meet space controls, automatic lighting shutoff,
and sidelighted daylighting control requirements
X (manual-on or
auto-on to ≤ 50%)
X (2012) (space controls =
manual + automatic time
switch device or occupancy
sensor (see Space Control
section for more detail) +
daylighting zone control
(see Lighting in Daylit
Zones section for more
detail)
* IECC 2012 removed the Automatic Lighting Shutoff section from the code and incorporated these requirements into the Additional Control Section of the code.
Always review official code language to ensure code compliance on all projects.
6
© 2011 WattStopper. All Rights Reserved
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
California
Title 24 2008
Exceptions
public corridors and stairwells
X
restrooms
X
primary building entrance areas and lobbies
X
areas where manual-on operation would endanger the safety/
security of the room or building occupants
X
sleeping units
X (2012)
spaces where patient care is provided
X (2012)
spaces where automatic shutoff would endanger occupant safety or
security
X (2012)
lighting intended for continuous operation
X (2012)
Space Controls
At least one control device needs to independently control the general
lighting in enclosed spaces
X (switch or occ
sensor)
X (switch or occ
sensor)
X (switch)
X (switch or occ
sensor)
Exceptions
areas designated as security or emergency areas required to be
continuously lighted
X
egress lighting in stairways or corridors
X
public areas with switches accessible only to authorized personnel
X
area designated as security or egress with switches accessible only
to authorized personnel
X (0.3W/sq ft can
remain on)
X (time switch or
occ sensor)
X
X (2012) (occ sensor that is
manual-on or auto-on to
≤ 50% (Required to meet
2012 additional control
requirement)
classrooms
X
X
X (2012)
X (occ sensor req'd)
lecture halls
X
conference and meeting rooms
X
X
X (2012)
X (occ sensor req'd)
training rooms
X
Must turn lighting off automatically within 30 minutes after last
occupant leaves in the following spaces:
X
Always review official code language to ensure code compliance on all projects.
© 2011 WattStopper. All Rights Reserved
7
Code Compliance Guide
ASHRAE
90.1-2010
Code Compliance Guide
ASHRAE
90.1-2010
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
X
X
X (2012)
California
Title 24 2008
Space Controls (cont'd)
employee lunch and break rooms
storage and supply rooms
X (between
50-1000 sq ft)
X (2012)
janitorial closet
X (2012)
all spaces ≤ 300 sq ft enclosed by floor to ceiling height partitions
X (2012)
rooms used for document copying and printing
offices
X
X (≤ 250 sq ft)
X (≤ 250 sq ft) (occ
sensor req'd)
X (2012)
multipurpose rooms < 1,000 sq ft
X (occ sensor req'd)
restrooms
X
dressing, locker, and fitting rooms
X
X (100% auto-on allowed)
(2012)
Exceptions
spaces with multi-scene control systems
X
X
shop and laboratory classrooms
X
X
preschool - 12th grade classrooms
X
spaces where automatic shutoff would endanger the safety or
security of room or building occupants
X
lighting required for 24 hour operation
X
public corridors and stairwells, primary building entrances, lobbies
X (100% auto-on allowed)
(2012)
areas where manual-on operation would endanger the safety or
security of occupants
X (100% auto-on allowed)
(2012)
Independent control of lighting in enclosed spaces:
manual
X
X
X
X
automatic (including an occupancy sensor)
X
X
X (2009/2012)
X
Enclosed spaces must have automatic time switch control device that
includes an override switch permitting manual operation
X (2012) (Req'd to meet
2012 additional control
requirement)
Always review official code language to ensure code compliance on all projects.
8
© 2011 WattStopper. All Rights Reserved
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
California
Title 24 2008
Exceptions
emergency egress lighting
X (2012)
lighting in spaces controlled by an occupancy sensor
X (2012)
Maximum control zone sizes
Maximum override time
2,500 sq ft for
spaces 10,000 sq ft
or less OR
2,500 sq ft for
spaces 10,000 sq
ft or less OR
maximum 10,000 sq
ft for spaces greater
than 10,000 sq ft
maximum 10,000
sq ft for spaces >
10,000 sq ft
2 hrs (of time-ofday schedule)
4 hrs (of time-ofday schedule)
5,000 sq ft*
5,000 sq ft
2 hrs+
2 hrs
X (30-70%) **
X (50%)
X (30-70%)
X (<100W)
X (2006/2009)
X (<100W) (2012)
X (one 1- or 2-lamp
luminaire)
Light Level Reduction
Enclosed spaces have uniform light level reduction of connected
lighting load
Exceptions
spaces with only one luminaire
areas controlled by occupancy sensor
X
corridors, storerooms, restrooms, & public lobbies
X
X
equipment rooms, electrical and mechanical rooms
X (electrical/
mechanical)
X (2012)
sleeping units
space with LPD
X (corridors)
X
< 0.6W/sq ft
daylit spaces with automatic daylighting control
<0.6W/sq ft
≤ 0.8W/sq ft
X (2012)
Parking Garage Lighting Control
Automatic shutoff using scheduled basis (time-of-day) control device,
occupancy sensor that turns lighting off within 30 minutes or a signal
from another control or alarm system
X
Always review official code language to ensure code compliance on all projects.
* In single tenant retail spaces, industrial facilities, arenas, malls, arcades, and auditoriums, the controlled area may not exceed 20,000 ft2
+ In single tenant retail spaces, industrial facilities, arenas, malls, arcades, and auditoriums, the override time may exceed 2 hours.
** No mention of uniformity.
© 2011 WattStopper. All Rights Reserved
9
Code Compliance Guide
ASHRAE
90.1-2010
CodeCompliance
ComplianceGuide
Guide
Code
ASHRAE
90.1-2010
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
California
Title 24 2008
X
X (2006)
X (when sufficient
daylight available)
X (2007)
X (2009/2012)
X (photosensor)
X
X
X
astronomical time switch or
X
X
X
photosensor
X
X
X
Automatically reduce lighting power of each luminaire by at least 30%
when there is no activity in a lighting zone (3,600 ft2 or less) for ≤ 30
minutes
X
Daylight transition zone lighting separately controlled to automatically
turn lighting on during daylight hours and off at sunset
X
Automatically reduce luminaires in response to daylight within 20 ft of
any perimeter wall structure
X
Exceptions
daylight transition zones and ramps without parking are exempt
from 30% reduction and wall ratio requirements
X
applications using HID of 150 watts or less or Induction lamps are
exempt from 30% reduction requirements
X
Exterior Lighting Control
Exterior lighting automatically turned off when sufficient daylight
available or when not required during nighttime hours
All other exterior lighting, including advertising signage
X (when sufficient
daylight available)
X (automatically
reduce by 30%
between midnight
or within 1 hr of
business closing
and 6am or
business opening or
during any period
when no activity has
been detected for ≤
15 min)
Lighting not designated for dusk-to-dawn operation controlled by
either:
photosensor and time switch or
astronomical time switch
Dusk-to-dawn lighting controlled by either:
Always review official code language to ensure code compliance on all projects.
10
© 2011 WattStopper. All Rights Reserved
Building façade and landscape lighting
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
California
Title 24 2008
X (building façade
- controlled by
automatic time switch
that automatically
shuts off lighting
when not needed
and reduces lighting
power between
50-80% or provides
continous dimming)
X (automatically
shut off between
midnight or
business closing
(whichever is
later) and 6am or
business opening
(whichever is
earlier))
Major Exception*
lighting that is controlled by a motion sensor and photocontrol
X
All building grounds lighting that operate at 100W must have lamps
with minimum efficacy of 60lumens/W unless controlled by a motion
sensor
X
X
X
X (3 days' time and
7-day schedule)
Major Exception*
LEDs, neon and cold cathode lighting
Time switch memory back up in the event of power loss
X
X (10 hours)
X (10 hours)
X (10 hours)
X
X
X (2006)
Exception
lighting for covered vehicle entrances or exits from building or
parking structures where required for safety, security, or eye
adaptation
Lighting in Daylit Zones
Lighting in daylit zones in enclosed spaces must be controlled
separately from general lighting in the space
X (sidelit areas ≥
250 sq ft; toplit
areas > 900 sq ft)
X (2009/2012) (all sidelit
and skylit areas with > 2
fixtures) (Req'd to meet
2012 additional control
requirement)
X (50% of lighting;
sidelit and skylit
areas > 250 sq ft)
Major Exceptions*
retail spaces
Daylight control zone cannot exceed 2500 sq ft
One control device can control contiguous daylight zones adjacent to
vertical fenestration when the zones include ≤ 2 adjacent orientations
(north, south ,east, west)
X
X (2012)
X (2009/2012)
Always review official code language to ensure code compliance on all projects.
*Multiple exceptions exist. See specific code language for more details.
© 2011 WattStopper. All Rights Reserved
11
Code Compliance Guide
ASHRAE
90.1-2010
CodeCompliance
ComplianceGuide
Guide
Code
ASHRAE
90.1-2010
IECC
2006/2009/2012
California
Title 24 2008
Separate switching of sidelit and skylit daylit zones
X (2009/2012) (when
skylight is > 15' from the
perimeter)
X (sidelit and skylit
areas > 250 sq ft)
Manual daylighting controls required
X (2012) (triggered based
on fenestration and
skylight area - See IECC
code Section 402.3) (Not
required when automatic
daylighting controls
installed) (Req'd to meet
2012 additional control
requirement)
Automatic daylighting control requirements
Automatic daylighting controls must automatically reduce lighting
power in response to available daylight
X
X (multi-level
photocontrol with
one control step
between 50 - 70%
design power and
second control step
≤ 35%)
ASHRAE
90.1-2004/2007
X (2012) (Req'd to meet
2012 additional control
requirement)
X
X (2012) (combination
of daylight sensing
X (multi-level
automatic control and
photocontrol with one
either continuous dimming
control step between
to < 35% or stepped
50 - 70% design
dimming with one control
power and second
step between 50 - 70% of
control step ≤ 35%)
design power and second
control step ≤ 35%)
Exception
areas with controlled lighting have a LPD <0.3W/sq ft
All general lighting in sidelit and skylit areas in enclosed spaces must
be separately controlled with an automatic daylighting control device
X
X (sidelit areas ≥
250 sq ft; toplit
areas > 900 sq ft)
X (2012) (triggered based
on increased fenestration
and skylight areas - See
IECC code Section 402.3)
X (sidelit and skylit
areas > 2500 sq ft)
Major Exceptions*
parking garages
X
when the skylight effective aperture is > .04 and all general lighting
in skylit area is controlled by a multi-level astronomical time switch
with an override switch
X
Always review official code language to ensure code compliance on all projects.
*Multiple exceptions exist. See specific code language for more details.
12
© 2011 WattStopper. All Rights Reserved
ASHRAE
90.1-2004/2007
Skylit areas require at least one multi-level lighting control that
controls lighting in the daylit zone separately from general lighting and
reduces the lighting power in the daylit zone in response to available
daylight.
Light sensor must be remote from where the calibration adjustments
are made & calibration adjustments must be readily accessible
IECC
2006/2009/2012
California
Title 24 2008
X (2012)
X (automatic
daylighting control)
X (2012) (multi-level
lighting control)
In areas with automatic daylighting controls the combined illuminance
from the controlled lighting and daylight cannot be less than the
illuminance from controlled lighting when no daylight is available
X (automatic
daylighting control)
X
When areas with automatic daylighting control are receiving daylight
illuminance levels greater than the illuminance from the controlled
lighting when no daylight is available the controlled lighting power
consumption must be < 35% of the rated power of the controlled
lighting
X (2012) (areas with multilevel lighting control)
Additional Efficiency Requirement
Must comply with one of the following:
X (2012)
Efficient HVAC performance
X (2012)
Efficient lighting system requiring a reduced lighting power density +
automatic daylighting control in specific space types***
X (2012)
On-site supply of renewable energy
X (2012)
X (when daylight
illuminance >150%)
Code Compliance Guide
ASHRAE
90.1-2010
Guest Room Lighting
Rooms in hotels and motels must have one or more control devices
at the entry door that collectively controls all permanently installed
luminaires and switched receptacles
X
X
X
Exception
bathrooms
X
X (2006/2009)
Suites must have controls at the entry to each room or at the primary
entry to the suite
X
X (2006/2009)
Bathrooms must have a control device to automatically turn off
bathroom lighting except for nightlighting not exceeding 5W within 60
minutes of the occupant leaving the space
X
Always review official code language to ensure code compliance on all projects.
***Consult IECC 2012 Section C406 for specific requirements
© 2011 WattStopper. All Rights Reserved
13
Code Compliance Guide
ASHRAE
90.1-2010
ASHRAE
90.1-2004/2007
IECC
2006/2009/2012
Integral control device or readily accessible wall-mounted device
X
X
X (2012)
Furniture-mounted task lighting controlled by automatic shutoff device
may be excludable from space LPA calculation if it is in addition to
general area lighting.
X
X
X (2009/2012)
California
Title 24 2008
Task Lighting
Stairwell Lighting
Automatically reduce lighting power in any one controlled zone by at
least 50% within 30 minutes of all occupants leaving that zone
Automatic Receptacle Control
Automatic shutoff of 50% of all receptacles in private offices, open
offices, and computer classrooms, including receptacles installed in
modular partitions, via:
X
Section 8
X
scheduled shutoff
X
occupancy sensor that turns receptacles off within 30 minutes
following non-occupancy of space
X
signal from another control or alarm system
X
Exceptions
receptacles dedicated to equipment with 24-hour operation
X
spaces where automatic shutoff would endanger safety/security of
occupants
X
System Commissioning
Controls for automatic lighting systems require functional testing
ensuring devices are calibrated, adjusted and programmed in
accordance with construction documents and manufacturers'
installation instructions
X
X (2012)
X
Confirm acceptable performance of the placement, sensitivity, and
time-out adjustments for occupancy sensors
X
X (2012)
X
Confirm time switches and programmable schedule controls are
programmed to turn the lights off
X
X (2012)
X
Confirm the placement and sensitivity adjustment of photosensors
reduce electric light in the space as specified
X
X (2012)
X
Documentation certifying performance criteria has been met
X
X (2012)
X
Always review official code language to ensure code compliance on all projects.
14
© 2011 WattStopper. All Rights Reserved
Coming January 2012 ... Look
for our easy to use pocket guide
15
Lighting Controls
for Interior
Applications
As energy codes become more rigorous, they are
including specific provisions for different types
of interior spaces. Project teams need a range of
control solutions capable of complying with these
requirements, as well as the flexibility to easily go
beyond code requirements to help achieve additional
energy management or sustainability goals.
WattStopper's Digital Lighting Management (DLM)
provides the sophisticated and robust control
capabilities needed to achieve both the mandatory
code requirements as well as these advanced goals.
16
CONTENTS
Code-compliant control solutions for
18 - 23
interior applications
Automatic shutoff
Space controls
Light level reduction
Daylighting
Plug loads/Receptacle control
17
Automatic shutoff
of general lighting
While different standards vary in exceptions and implementation, the
core requirement is automated lighting shutoff. Acceptable methods for
complying with automated shutoff requirements are time-scheduled
shutoff (this page) occupancy-based shutoff (facing page) or a signal
from another control system (e.g. BAS).
Time scheduled shutoff
Scheduling lighting to turn on and off based on normal business hours
provides a convenient way of automating general facility lighting. Using a
segment manager to schedule lighting shutoff enables code compliance
in many codes and in many spaces (see Code Compliance Guide, pages
6-15 for more details). Local override or space control switches enable
local lighting operation regardless of scheduled status. Using DLM
products ensures code compliance and the ability to implement
options such as networked control, remote administration,
ZONE A
real-time monitoring, even demand response strategies.
ZONE E
Segment Network on LM-MSTP Wire
www.wattstopper.com
2hr max override
(ASHRAE 90.1-2010)
(required for
scheduling)
ZONE B
Zone A
Zone B
ZONE D
ZONE C
Zone C
10,000 ft2 floor
Zone A
Zone B
Zone C
Zone D
Zone E
Typical of up to
48 loads
Line Voltage
18
LILM Panel
LMRJ Cables
Zone E
Zone D
Products:
• LILM panel
• DLM wall switches
Best applications: High usage areas
with regular schedules
• open offices
• retail sales floor
• hallways
• common areas
Occupancy based shutoff
For spaces that follow less predictable schedules or are intermittently
occupied, occupancy sensors provide reliable automated shutoff. When
an area becomes unoccupied, the sensors signal lighting to turn off.
Using DLM products enables users to implement more advanced
control strategies for code compliance, such as bi-level switching, or
enabling the addition of integrated plug load control at a later time.
Load A
Load B
Products:
• DLM occupancy sensors
• DLM room controllers
• DLM 2-button wall switches
Best applications: High usage areas with
irregular schedules
• conference, meeting and training rooms
• classrooms
• private and open offices
Line Voltage
19
Space
controls
Each major code also includes provisions for controls in enclosed
spaces, including spaces with ceiling height partitions.
Designers can meet this requirement in many spaces with occupancy
sensors and wall switches. Using DLM products enables the
deployment of advanced strategies like auto-on to 50% of lighting, now
mandatory in 90.1-2010.
Code Compliance
Load B
Load A
ASHRAE 2004 2007
IECC
2003 2006
CA T-24
Legend
Line
Voltage
LMRC-102
LMDX-100
LMSW-102
LMRJ
J-BOX
BAT=
Sensor Configuration
Load Config (PnL)
Daylighting Config
LMCT-100
LMRH-102
LMRL-100
20
Products:
• DLM occupancy sensor
• DLM 2-button wall switches
• DLM room controllers
Best applications:
• classroom
• lunch/break room
• offices
Light level
reduction
All three major codes include provisions for reducing light levels.
Achieving this can be done by:
• controlling all lamps or luminaires
• dual switching of alternate rows, luminaires, or lamps
• switching independent lamps within a luminaire
• switching each luminaire
One of the easiest methods to achieve this is by using multibutton wall switches (two buttons or more) in conjunction with
occupancy sensors. The sensors provide the automated shutoff
and the switches provide the ability to reduce light levels when
necessary.
Code Compliance
ASHRAE 2004 2007
to 3rd
party device
IECC
2003 2006
CA T-24
2008
Legend
LMRC-213
Line
Voltage
LMDX-100
Load C
Load A
LMLS-400
Load B
LMSW-102
LMRJ
J-BOX
Products:
• DLM daylighting sensors
• DLM occupancy sensors
• DLM wall switches
Best applications:
• private office
• conference room
• classroom
LMRL-100
BAT=
Sensor Configuration
Load Config (PnL)
Daylighting Config
LMCT-100
21
LMRH-102
Daylighting
control
All three major codes now require some form of daylighting control.
While each code sets forth specific provisions, all share the approach of
requiring independent control of some portion of the lighting in a daylit
zone.
Using DLM daylighting controls gives users flexibility to implement
either switching or dimming control depending on the configuration
of the space and other design objectives. In addition, users can
easily integrate the daylighting control with other lighting and energy
management controls for maximizing building energy performance.
Code Compliance
ASHRAE 2004 2007 2010
IECC
2003 2006 2009
CA T-24
2008
Legend
LMRC-213
LMPX-100
Load C
Load B
LMDM-101
Whiteboard
Load A
LMSW-101
LMLS-500
Line
Voltage
LMRJ
J-BOX
to 3rd
party
device
BAT=
Sensor Configuration
Load Config (PnL)
Daylighting Config
22
Products:
• DLM occupancy sensor
• DLM daylighting sensors
LMCT-100
• DLM room controllers
LMRL-100
LMRH-101
Best applications:
Primary sidelighted space > 250 ft2
Plug loads/
receptacle control
Mandatory in ASHRAE 90.1-2010
New mandates require automated shutoff of receptacles in specific
space types, including computer classrooms, private offices, and open
offices. These provisions are designed to control proliferating plug load
energy consumption, now estimated as accounting for between 15-20%
of a building’s total electrical energy consumption.
DLM plug load control products allow users to integrate plug load
control with lighting control, by using the control device (either
occupancy sensor or control panel) to also control identified
receptacles. Additional options include real-time consumption
Code Complianc
monitoring, for identifying abuse or usage patterns or implementing
ASHRAE 2004 200
IECC
2003 200
demand response strategies.
CA T-24
2008
Legend
LMRC
Line
Voltage
to 3rd
party
device
LMPL
Line
Voltage
LMDX
Load B
LMLS
LMDM
LMRL
Products:
• occupancy sensor
• DLM room controllers
• DLM plug load room controllers
Best applications:
• private office
• open office
• computer classroom
LMRJ
Load A
J-BOX
BAT=
Sensor Configuration
Load Config (PnL)
Daylighting Config
LMCT
23
LMRH
Lighting Controls
for Exterior
Applications
Exterior lighting consumes a significant amount of energy.
Parking lot and garage lighting alone operate more than 314 billion
hours each year, accounting for more than 50 TWh of electrical
energy use annually. To provide greater energy efficiency while
maintaining robust safety and security levels, each of the major
energy codes includes provisions for control of exterior lighting.
In addition to these existing requirements, the 2010 revision of
ASHRAE 90.1 adds specific requirements for parking garage
lighting.
WattStopper offers innovative solutions for these challenging
environments, including rugged
motion sensors specifically
engineered for LED outdoor fixtures
as well as cost-effective control
panels for scheduled control.
24
CONTENTS
code-compliant control solutions
26-29
for exterior applications
EXTERIOR LIGHTING CONTROL
PARKING GARAGE
25
Exterior lighting
controls
Each code has different specifics, but, in general, mandate that exterior
lighting be automatically shut off as well as controlled by occupancy
sensors, photocell, astronomical time switch or some combination of
these devices.
Photocell control
Operating by measuring available daylight, photocells turn lighting off
when daylight becomes sufficient at dawn, and turn lighting on when
daylight levels diminish at dusk.
Products: Lighting control panels with exterior photocells
Best applications: Parking lots, walkways, building facades, security
lighting
Astronomical control
With astronomical control, a time clock uses location data, such as
longitude and latitude, together with the date, to implement an ON/
OFF schedule for exterior lighting that accommodates the changing
seasons.
Products: Lighting control panel with astronomical time clock
Best applications: Building facade and landscape lighting
Products:
Peanut Panel
26
Best Applications:
Building facade lighting,
landscape lighting
pc
Security Office
S
DL
LCP-1
Building security
lighting LP-1-10
via LCP-1
Canopy lighting on
LP-1-9 via LCP-1
Walkway security
lighting on PP-1-8
via LCP-1
Walkway lighting on
PP-2-7 via LCP-1
Parking area lighting
on LP-1-7 via LCP-1
Parking lot security lighting
on LP-1-8 via LCP-1
27
Parking
garages
New code provisions in ASHRAE 90.1-2010 mandate multi-level,
occupancy-based control of parking garage lighting. In addition,
separate daylight-responsive control is required for daylight transition
zones.
Products:
• FSP-211
• FSIR-100
28
Best applications:
• parking garages
• parking lots
• gas stations
29
Opportunities beyond
code compliance
Under the Energy Policy Act of 2005 (EPAct), mandatory code compliance
provides a foundation for an even greater opportunity. EPAct 2005
enables commercial building owners to invest in energy efficiency, with
a Commercial Building Tax Deduction (CBTD) for capital investments in
energy efficiency equipment, including lighting controls.
Lighting Tax Deduction Provisions
Lighting system projects may qualify for a partial deduction of up to $0.60/
ft2. To do so, projects must satisfy the following requirements set forth in
the interim rules:
1. Reduce lighting power density (LPD) by 25-40% beyond the minimum
requirements outlined in ASHRAE 90.1-2001 (warehouse spaces must
reduce LPD by 50%)
A pro-rated deduction is allowed for projects that reduce LPD
between 25 and 40% as illustrated in the table.
2. Comply with all mandatory and prescriptive requirements of ASHRAE
90.1-2001 related to lighting controls
3. Provide bi-level switching for all types of building spaces (referred
to as “occupancies”). Exceptions: hotel/motel guest rooms, store
rooms, restrooms, public lobbies
4. Meet minimum requirements for calculated lighting levels according
to IESNA Lighting Handbook, 9th Ed
The deduction has been extended through December 31, 2013. For more
information on this deduction, visit www.efficientbuildings.org
30
% of LPD
reduction
Amount
of tax
deduction
25%
26%
27%
28%
29%
30%
31%
32%
33%
34%
35%
36%
37%
38%
39%
40%
more
than
40%
$0.30 $0.32 $0.34 $0.36 $0.38 $0.40 $0.42 $0.44 $0.46 $0.48 $0.50 $0.52 $0.54 $0.56 $0.58 $0.60 $0.60
Table reprinted from “Energy Policy Act of 2005 Encourages Energy-Efficient Lighting with Tax Deduction,” Craig DiLouie, Lighting Controls Association,
www.aboutlightingcontrols.org/education/papers/tax_deduction_2005.shtml.
31
Code Compliance Resources & Tools
www.wattstopper.com/codesmart.html
Turn to CodeSmart online for the latest information on state code
adoptions, technical bulletins about specific code provisions, code
compliant application highlights, and more!
Best Practice Design Library
Study code compliant applications for insight on product selection
and implementation, layout examples, wiring and installation tips,
and equipment schedules.
Additional Resources
rev. 10/2011
www.energycodes.gov — this Department of Energy website
provides current information on code adoptions, compliance,
training, and implementation tools.
Tech Support: 800.879.8585
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WS-11-20065
www.bcap-energy.org — this not-for-profit organization’s
website, designed to assist states in developing energy codes,
offers extensive information on code development and adoptions,
including legislative alerts, as well as training seminars and
conferences.