Building Energy Codes Program Commercial Program Review

1
Commercial Energy Code Compliance IECC 2000/
2001/2003 Compliance Lighting Requirements Chapter
8 IECC
U.S. Department of Energy Building Energy Codes
Program
2
Overview of Code ComplianceStructure of the IECC

• Chapter 1 Administrative Enforcement
• Chapter 2 Definitions
• Chapter 3 Design Conditions
• Chapter 4 Residential - Systems Analysis
• Chapter 5 Residential - Component Performance
• Chapter 6 Simplified Prescriptive Requirements
• Chapter 7 ASHRAE 90.1 Energy Code Reference
• Chapter 8 Design by Acceptable Practice for
  Commercial Buildings
• Chapter 9 Referenced Standards

Commercial Chapters
3
Outline

• Overview of Commercial Energy Codes
• Code Requirements
• Building Envelope
• Mandatory Requirements
• Prescriptive Requirements
• Mechanical Systems
• Simple Systems
• Complex Systems
• Service Water Heating
• Lighting Systems

Requirements for Chapter 7 (ASHRAE 90.1) are
covered in a separate presentation
For additional training materials see
www.energycodes.gov/training/presentations.stm
4
IECC Chapters 7 and 8
5
IECC Chapter 8Design by Acceptable Practice
Building System
Compliance Options
Prescriptive Option
Envelope
Energy Code Compliance
Trade Off Option
Lighting
Mechanical
Performance Option
HVAC
SWH
This presentation covers the Mandatory and
Prescriptive requirements, see COMcheck-EZ
materials for information on the Trade-off and
Performance Options. For additional training
materials see www.energycodes.gov/training/presen
tations.stm
6
Presentation Reference
Code year covered in current presentation.
Building System covered by material
IECC Chapter Reference (7 or 8)
Mechanical
Lighting
Envelope
2000/2001/2003 IECC
Section
Mandatory Requirements
Power Requirements
Includes section
Type of requirement covered by material
This presentation covers 2000/200/2003 IECC
Lighting Requirements 2001/2003 requirements
are listed in red.
7
Scope

• Applies to the design of the
• first installed lighting systems
• altered system that increases the lighting load
  if change of occupancy
• Lighting systems used for specialized commercial,
  display and emergency use purposes are exempt
  (Section 805.4.1)

8
Interior Lighting Compliance
Mandatory Requirements
Interior Lighting Power Requirements
and
Controls
The building complies if its total connected
power is no greater than the interior lighting
power.
Switching
Total Connected Power (805.4.1)
Interior Lighting Power (805.4.2)
lt
Entire Building
Partial Building
9
Interior Lighting Controls

• Lighting controls required for each area enclosed
  by ceiling height partitions
• Switch locations
• In view of lights
• On or off indication from remote location
• Occupancy sensor

Section 805.2.1
10
Interior Lighting Controls

• Exceptions
• Emergency/security lighting
• Stairway or corridor lighting for egress

Section 805.2.1
11
Additional Controls

• Each area with mandatory controls must have
• Light reduction controls (805.2.2.1) included in
  2003
• Automatic lighting shutoff (805.2.2.2) 2001
  Supplement
• Guestrooms (805.2.2.3) included in 2003
• Exceptions
• Areas with only 1 luminaire
• Areas with an occupant-sensing device
• Corridors, storerooms, restrooms, or public
  lobbies

Section 805.2.2
12
Bi-Level SwitchingLight Reduction Controls

• Areas that are required to have manual control
  shall also
• Reduce connected lighting load uniformly by 50
  for each space
• Exceptions
• Area has one luminaire
• Occupancy sensor controls area
• Area is corridor, storeroom, restroom, or public
  lobby
• Guest rooms
• Spaces that use less than 0.6 Watts per square
  foot
• (in 2001 IECC requirement applied to areas lt 250
  ft.2)

Section 805.2.2.1
13
Bi-Level Switching

• Compliance Examples

14
Bi-Level Switching

• Compliance Examples

Example Alternate Lamps (a/b)
Example Dimmer Control Option
15
Automatic Lighting Shutoff

• In buildings gt 5000 ft2
• must have automatic control devices to function
  either on
• Scheduled basis using time-of-day
• Unscheduled basis by occupant intervention
• In 2001 IECC requirement for spaces gt250 ft2 in
  buildings larger than 5,000 ft2

Section 805.2.2.2
16
Occupant Override

• Where automatic time switch control devices are
  installed to comply with Automatic Lighting
  Shutoff, device shall be equipped with an
  override switching device that
• Readily accessbile
• Located so that person using the device can see
  the lights or area controlled by the switch
• Manually operated
• Allows lighting to remain on for no more than 2
  hours when an override is initiated
• Controls an area lt5,000 square feet
• Some Exceptions

Section 805.2.2.2.1
17
Holiday scheduling

• If automatic time switch is installed
• Automatic holiday scheduling feature that turns
  off all loads for at least 24 hours and then
  resumes to normally scheduled operation
• Exceptions
• Retail stores and associated malls, restaurants,
  grocery stores, churches and theaters

18
Guest Rooms

• Master switch required at entry

Standard Room
Suite
Section 805.2.2.2
19
Exterior Lighting Controls

• Automatic switching or photocell controls shall
  be provided for all exterior lighting not
  intended for 24 hour operation.
• Automatic time switches shall have a combination
• Seven-day and seasonal daylight program schedule
  adjustment
• A minimum 4-hour power backup

20
Tandem Wiring
Center to Center

• Exceptions
• Luminaires with electronic high-frequency
  ballasts
• Luminaires not on same switch controls or not in
  the same area

Section 805.3
21
Exit Signs

• Internally illuminated exit signs shall not
  exceed 5 Watts per side

Section 805.4
22
Interior Lighting Power Requirements
Mandatory Requirements
Interior Lighting Power Requirements
and
Controls
The building complies if its total connected
power is no greater than the interior lighting
power.
Switching
Total Connected Power
Interior Lighting Power
lt
Entire Building
Partial Building
Section 805.4/805.5
23
Total Connected Power

• Total connected lighting wattage includes
• Lamp wattage
• Ballast wattage
• Sources of bulb/ballast wattages
• Manufacturers literature
• Industry default tables
• Exceptions
• Specialized medical, dental, and research
  lighting
• Professional sports arena playing field lighting
• Display lighting for gallery exhibits, museums,
  and monuments
• Guest room lighting in hotels, motels, boarding
  houses, or similar buildings
• Emergency lighting automatically off during
  normal building operation

24
Interior Lighting Power
Mandatory Requirements
Interior Lighting Power Requirements
and
Controls
The building complies if its total connected
power is no greater than the interior lighting
power.
Switching
Total Connected Power
Interior Lighting Power
lt
Entire Building

• Entire building
• Building is all one occupancy or a majority
  occupancy exists (Section 101.4.3)
• Tenant area or partial building
• Use for tenant spaces in larger building or
  divide whole building into area types
• Table 805.4.2/Table 805.5.2

Partial Building
25
What is the Interior Lighting Power Budget for
this Building?
26
Does the Building Comply?

• Determine the total connected power in watts for
  the proposed lighting
• Determine the interior lighting power budget for
  the entire building or space
• Building complies if
• Interior lighting power budget - total connected
  power ?0

27
Exterior Lighting

• Criteria
• Lighting power supplied through building
  electrical service
• Must use energy-efficient lighting sources to
  highlight paths, walkways and parking areas
• ? 45 Lumens/Watt
• Fluorescent
• Compact Fluorescent
• Metal Halide
• High Pressure Sodium
• Exceptions
• Where approved because of the following
  considerations
• Historical
• Safety
• Signage
• Emergency

Section 805.5/805.6
28
Energy-Efficient Lighting Sources
29
Electrical Energy Consumption

• In buildings having individual dwelling units,
  provisions shall be made to determine the
  electrical energy consumed by each tenant by
  separately metering individual dwelling units

Section 805.7
30
More Information

• For additional training materials see
• www.energycodes.gov/training/presentations.stm
• Code Books
• www.iccsafe.org