5.9
Additions and Alterations
5.9.1
Overview
New additions, similar to newly constructed buildings, must
meet all mandatory measures for both the prescriptive and performance method of
compliance. Prescriptive requirements, including the lighting power densities,
must be met if the prescriptive method of compliance is used. If the performance
approach is used and the new addition includes envelope or mechanical systems in
the performance analysis, the lighting power densities may be traded-off against
other system energy budgets.
Any
space with a lighting system installed for the first time must meet the same
lighting requirements as a newly constructed building.
Entire
Luminaire alterations include removing and reinstalling more than 10 percent of
the existing luminaires, replacing or removing and adding luminaires, and
redesign of the lighting system that includes adding, removing, or replacing
walls or ceilings.
Luminaire Component Modifications include replacing the
ballasts or drivers and the associated lamps, permanently changing the light
source, and changing the optical system such as reflectors.
Lighting Wiring alterations include wiring alterations that
add a circuit feeding luminaires; that relocate, modify, or replace wiring
between a switch or panelboard and luminaires; or that replace lighting control
panels, panelboards or branch circuit wiring.
The
nonresidential indoor lighting of the addition shall meet either the
prescriptive approach or the performance approach.
When
using the prescriptive approach, the indoor lighting in the addition must meet
the lighting requirements of §110.9, §130.0 through §130.5, §140.3(c), and §140.6.
When
using the performance approach, the indoor lighting in the addition must meet
the lighting requirements of §110.0 through §130.5; and one of the following two options of the performance
requirements of §140.1:
1.
The addition alone; or
2.
The existing building, plus the addition, plus the alteration.
5.9.3 Alterations – General Information
5.9.3.1
Scope
Alterations to existing nonresidential, high-rise
residential, hotel/motel, or re-locatable public school buildings; or
alterations in conjunction with a change in building occupancy to a
nonresidential, high-rise residential, or hotel/motel occupancy; shall meet the
following requirements:
1.
Comply with the requirements for Additions, or
2.
Comply with the Prescriptive lighting requirements, or Comply with the
Performance approach:
An Alteration is defined by the Energy Standards as
follows:
1.
Any change to a building's water-heating system, space-conditioning system,
lighting system, electrical power distribution system, or envelope that is not
an addition; and
2.
Any regulated change to an outdoor lighting system that is not an addition;
and
3.
Any regulated change to signs located either indoors or outdoors; and
4.
Any regulated change to a covered process that is not an addition.
An Altered Component is defined by the Energy Standards as a
component that has undergone an alteration and is subject to all applicable
requirements.
5.9.3.2
Indoor Lighting Exceptions
The following indoor lighting alterations are not required to
comply with the lighting requirements in the Energy Standards:
1.
Entire luminaire alterations or component modification of portable luminaires,
luminaires affixed to moveable partitions, or lighting excluded by §140.6(a)3.
2. In
an enclosed space where only two luminaires are affected by entire luminaire
alterations, luminaire component modifications, or lighting wiring
alterations.
3.
Disturbance of asbestos directly caused by entire luminaire alterations,
luminaire component modifications, or lighting wiring alterations, unless the
modifications are made in conjunction with asbestos abatement.
4.
Lighting wiring alterations strictly limited to addition of lighting
controls.
EXCEPTION: Lighting
alterations made in conjunction with asbestos abatement shall comply with the
applicable requirements in §141.0(b)2I
5.9.3.3
Skylight Exception.
When the daylighting control requirements of §130.1(d)
are triggered by the addition of skylights to an existing building and the
lighting system is not re-circuited, the daylighting control need not meet the
multi-level requirements in § 130.1(d). Daylit areas must be controlled
separately from non-daylit areas. An automatic control must be able to
reduce lighting power by at least 65 percent when the daylit area is fully
illuminated by daylight.
5.9.3.4
Alterations – Performance Approach
When using the Performance Approach (using a software program
certified to the Energy Commission) the altered envelope, space–conditioning
system, lighting and water heating components, and any newly installed equipment
serving the alteration, shall meet the applicable requirements of §110.0
through §110.9,
§s §120.0 through §120.6, and
§s 120.8 through §130.5.
5.9.3.5
Alterations – Prescriptive Approach
When using the Prescriptive
Approach, the altered lighting shall meet the applicable requirements of §110.0,
§110.9, and §130.
5.9.4
Lighting Alterations
Lighting alterations are either
alterations to entire luminaires, called Entire Luminaire Alterations, or
modifications of installed luminaires, called Luminaire Component
Modifications.
Entire Luminaire Alterations are
alterations that include or affect the entire luminaire, such as the complete
replacement of old luminaires with new; completely disconnecting the luminaire
from the circuit, modifying it, and reinstalling it; or moving or modifying the
walls or ceilings of the space along with modifying the space’s lighting system.
Luminaire Component Modifications are modifications in place that include
replacing the ballasts or drivers and the associated lamps in the luminaire,
permanently changing the light source of the luminaire, or changing the optical
system of the luminaire. The Energy Standards compliance goals for the lighting
alterations are twofold: first, the installation must meet the lighting power
level specified in the Energy Standards, and second, the installation must
provide the lighting controls functionality specified in the Energy
Standards.
The 2016 Energy Standards allow
three options for meeting the installed power and associated control
requirements:
1.
Installed lighting power that is greater than 85 percent of Table
140.6-C
2.
Installed lighting power that is equal or less than 85 percent of Table
140.6-C
3.
Where total rated power of the replacement luminaires in the occupancy, compared
to the total rated power of the existing luminaires in the occupancy, have 50
percent lower power in hotel, office, and retail occupancies, and 35 percent
lower power in all other occupancies.
Option 3 is new for 2016 and allows
the maximum installed lighting power to be determined by totaling and taking a
percentage of the currently installed lighting power, rather than by measuring
the square footage of the space and multiplying it by a lighting power
allowance. As this is likely to result in a lower allowed lighting power than
option 2, bi-level controls are not required for this option. The control
requirements for each option are described in Table
5-4.
Table 5-4 (Modified Table 141.0-E): New Control
Requirement for Lighting Alterations
|
Applicable §130.1 Control
requirements: |
Lighting power is reduced by 35/50% compared to
existing |
Resulting lighting power, compared to the lighting
power allowance specified in §140.6(c)2,
Area Category Method |
|
|
Lighting power is ≤ 85% of allowance |
Lighting power is > 85% to 100% of
allowance |
|
§130.1(a)1, 2, and
3
Area
Controls |
Yes |
Yes |
Yes |
|
§130………...1(b)
Multi-Level
Lighting Controls – only for alterations to general lighting of enclosed
spaces 100 square feet or larger with a connected lighting load that
exceeds 0.5 watts per square foot |
Not
Required |
Bi-level control
for each enclosed space, minimum one step between 30-70 percent of
lighting power regardless of luminaire type, or meet Section
130.1(b) |
Yes |
|
§130.1(c)
Shut-Off
Controls |
Yes1 |
Yes |
Yes |
|
§130.1(d)
Automatic Daylight
Controls |
Not
Required |
Not
Required |
Yes |
|
§130.1(e)
Demand Responsive
Controls – only for alterations > 10,000 ft2 in a single
building, where the alteration also changes the area of the space, or
changes the occupancy type of the space, or increases the lighting
power |
Not
Required |
Not
Required |
Yes |
|
1 As
bi-level controls are not
required for this option, partial-off controls are not required to be
installed in place of “full off” automatic shutoff controls for library
book stack aisles, corridors and stairwells (see Sections
141.0(b)2Iii and Jii).
|
The following lighting
alterations are not required to comply with §141.0(b)2I,
Entire Luminaire Alterations, or §141.0(b)2J, Luminaire Component
Modifications:
1.
Alterations in an enclosed space where only two luminaires are replaced or
reinstalled.
2.
Alterations that would directly cause the disturbance of asbestos, unless the
alterations are made in conjunction with asbestos abatement.
3.
Alterations of portable luminaires, luminaires affixed to moveable partitions,
or lighting excluded by §140.6(a)3.
The acceptance testing requirement
of §130.4
is not required for alterations where lighting controls are added to control 20
or fewer luminaires.
Example 5-31 Entire Luminaire Alteration
OptionsQuestion
All light fixtures are being replaced in one enclosed room
of a commercial tenant space. The entire tenant space has a total of 25
light fixtures. The altered room will receive a total of eight new light
fixtures. Which Energy Standards requirements must we comply with?
Answer
Since all lighting fixtures within the enclosed area (room)
are being replaced and there are no alterations to walls or ceilings, it can
comply with the requirement of either subparagraph i or subgraph ii of §141.0(b)2I.
Example 5-32 Threshold for entire luminaire alterations
requirements (changeout example)
Question
There are 100 lighting fixtures in an existing office
space. Ceilings are being replaced with new, together with replacing all the
existing light fixtures with new. There is no change in the fixture layout.
Which Standards requirements must we comply with?
Answer
Since the scope of work includes replacing all existing
light fixtures, the project must comply with §141.0(b)2I. However, since the
scope also includes ceiling replacement, it must comply specifically with
subsection “i” of this section: the luminaires must meet the lighting power
allowance in §140.6 and the altered luminaires must meet the applicable
requirements in Table
141.0-E.
Example 5-33
Threshold for entire luminaire alterations requirements (remodel
example)
Question
There are 100 lighting fixtures in an existing office
space. Walls are being altered, together with a replacement of the existing
light fixtures with 80 new fixtures. Which Energy Standards requirements must we
comply with?
Answer
Since the scope of work includes a redesign of the lighting
system along with wall alterations, it must comply with §141.0(b)2Ii. It must
meet requirements include the lighting power allowance in §140.6 and applicable
control requirements in Table 141.0-E.
Example 5-34
Rewiring of replacement luminaires (example compliance with lighting wiring
alterations)
Question
If the lighting system is being rewired as part of a
lighting alteration project, which Energy Standards requirement must be complied
with?
Answer
When the alteration involves a wiring alteration, it must
comply with the control requirements as specified in §141.0(b)2K. This is in
addition to any applicable lighting alteration requirements. Note: many of
the requirements for wiring alterations and lighting alterations are the same.
Acceptance test requirement is triggered if controls are added to control more
than 20 luminaires.
Example 5-35
Multi-floor retail project (example compliance with lighting
alterations)
Question
The lighting is being retrofitted in a retail building with
two floors. The first floor has fixtures which are being replaced with new LED
fixtures. Also on this floor are two offices with one fixture each and a
conference room with two fixtures. The aggregate wattage of the new first floor
fixtures is 55 percent less than the original fixture wattage. The second floor
has linear fluorescent ceiling fixtures which are being retrofitted with LED
conversion kits. How do the Energy Standards impact the overall
project?
Answer
The retrofits on the first floor are entire luminaire
alterations. The building occupancy is retail so the power reduction threshold
is 50 percent; a lighting power allowance could be calculated based on square
footage, but because the new fixtures use less than half the power of the
original fixtures, it makes sense to use the percent reduction approach. The new
fixtures must comply with the controls requirements in §141.0(b)2Iii. Those applicable provisions are §130.1(c)1A through C, §130.1(c)2, §130.1(c)3, §130.1(c)4, and §130.1(c)5. However,
since there are offices and conference rooms with two or fewer fixtures, per
Exception 2 to §141.0(b)2I those rooms are not required to comply with
control requirements. The retrofits on the second floor are luminaire component
modifications. Luminaire component modifications have the same option to either
determine the lighting power allowance based on the area type and square
footage, or based on a percent reduction in the lighting power. In short, even
though the two floors are using different retrofit approaches, the same options
and the same requirements ultimately apply.
Example 5-36
Example Warehouse Lighting Alteration (example compliance with the 50/35
percent lighting power reduction option)
Question
The existing metal halide luminaires in a warehouse
facility are proposed to be replaced by LED luminaires (shown below). There are
100 existing metal halide luminares that use 250 watts each, all of which will
be replaced. The replacement LED luminaires use 150 watts each; it seems easy to
see that this is more than a 35 percent reduction. How is compliance determined
under the new power reduction option, and what controls are required?
A lamp taken from an existing
luminaire
Label of an existing luminaire
Source:
EcologyAction
Source: EcologyAction
Picture of one of the new LED luminaire
Source: EcologyAction
Answer
As a warehouse is not an “office, hotel, or retail” space,
the power reduction option requires a 35 percent reduction in installed lighting
power. Thus, enter the number and wattage of the existing luminaires into
NRCC-LTI-06, and use the form to calculate both the existing installed lighting
power (100 x 250 = 25,000) and the maximum allowance based on a 35 percent
reduction (25,000 x 0.65 = 16,250). Enter the number and wattage of the new
luminaires into NRCC-LTI-01, just like any other project; if this is a
one-for-one replacement, then the total lighting power of the new luminaires
would be under the allowance (100 x 150 = 15,000).
As the lighting power reduction exceeds 35 percent, only
area on/off controls and automatic shutoff controls are mandatory as specified
in Section
141.0(b)2Iii and summarized in Table
5-4.
5.9.5
Alterations –Luminaire Component Modifications
The followings are
defined as luminaire component modifications in the 2016 Energy Standards:
1.
Replacing the ballasts or drivers and the associated lamps in the luminaire;
2.
Permanently changing the light source of the luminaire; or
3.
Permanently changing the optical system of a luminaire.
Lamp replacement
alone and ballast replacement alone is not considered a modification of the
luminaire as long as the replacement lamps or ballasts are installed and powered
without modifying the luminaire. In addition, the following luminaire
modifications are not required to comply with §141.0(b)2J, Luminaire Component
Modifications:
1.
Modifications that would cause the disturbance of asbestos, unless the
modifications are made in conjunction with asbestos abatement; and
2.
Modification of portable luminaires, luminaires affixed to moveable partitions,
or lighting excluded by §140.6(a)3.
Acceptance testing
requirement of §130.4
is not required for modifications where lighting controls are added to control
20 or fewer luminaires.
Example 5-37
Threshold for luminaire component modifications
Question
There are 100 lighting fixtures in an existing office
space. For 20 fixtures, the internal components are being replaced with
new kits that only require disconnecting the existing luminaires, and
reconnecting the new luminaires, which Energy Standards requirements
apply?
Answer
Because this
alteration is considered luminaire component modifications, and less than 70
fixtures are being modified, the space may maintain its existing installed
lighting power and controls provisions.
Example 5-38
Standards for luminaire component modifications
Question
If in the example above, 70 fixtures are being replaced
with fixture kits, which Energy Standards requirements must be complied
with?
Answer
Because 70 or more fixtures are being modified, the
lighting system in the space with the modifications can either comply with
§140.6 or comply with the 35/50 percent lower rated power
compared to the original luminaires approach. It must also comply with §130.1(a)1, 2 and 3, and §130.1(c)1A through 1C, §130.1(c)2, §130.1(c)3 through
§130.1(c)6A,
and for parking garages §130.1(c)7B.
Example 5-39
Luminaire Component Modification Counting
Question
If a project includes 70 or more luminaire component
modifications on a floor, but a portion of those modifications are enclosed
spaces containing two or fewer luminaires, do the luminaires in the enclosed
spaces count toward the total 70 or more trigger under §141.0(b)2J?
Answer
Yes, the Exception 2 to §141.0(b)2J that exempts two or fewer luminaire component
modifications in an enclosed space only exempts the luminaires in those spaces
from the control requirements, but does not reduce the total luminaire count on
a floor. Therefore the controls would not be required in the enclosed spaces
with two or fewer luminaires, but controls would be required for the rest of the
floor if the total count (including the luminaires in the enclosed spaces) were
more than the 70 trigger.
Example 5-40 Lamp
replacements as part of a project
Question
A single-story retail store has 60 T12 linear fluorescent
strip fixtures and two sections of track lighting. One of the tracks has 10
screw-in incandescent flood lights and the other track has 10 pin-based halogen
PAR lamps. The linear fixtures are being retrofitted with T8 lamps and premium
ballasts and in the track fixtures the screw-in and pin-based incandescent lamps
are being replaced with equivalent screw-in and pin-based LED lamps. What are
the Energy Standards requirements for this job?
Answer
The Energy Standards are not triggered for this project
because fewer than 70 fixtures are being modified. Even though a total of 80
fixtures are included in the project, the 20 incandescent fixtures do not count
toward the 70 threshold because they are simple lamp replacements that do not
count as modifications (per §141.0(b)2J).
Example
5-41
Compliance documentation
Question
A warehouse project has 100 existing HID high bay fixtures
which are being converted to third generation T8 high bays. The building
occupancy is warehouse so the savings threshold is 35 percent. The aggregate
wattage of the new replacement fixtures is 45 percent below the original fixture
wattage, so the controls requirements in 141.0(b)2Iii apply. How is the 45 percent wattage delta between the
existing fixtures and the new fixtures documented for compliance
purposes?
Answer
Documentation is the same as for an Entire Luminaire
Alteration, as described in Example 5-36: you will complete the NRCC-LTI-06 form
to record the number and wattage of the original fixtures, and calculate both
the total existing wattage and the allowed lighting power based on a 35 percent
reduction. The newly modified lighting will be documented on the NRCC-LTI-01,
just like any other project. As the lighting power reduction exceeds 35 percent,
only area on/off controls and automatic shutoff controls are mandatory as
specified in Section
141.0(b)2Iii and summarized in Table
5-4.
5.9.6
Alterations - Lighting Wiring Alterations
Lighting Wiring Alterations are
defined in the 2016 Energy Standards as one of the following:
1.
Adding a circuit feeding luminaires;
2.
Replacing, modifying, or relocating wiring between a switch or panelboard and
luminaires;
3.
Replacing lighting control panels, panelboards, or branch circuit wiring.
Changes to wiring not
listed above are not considered to be “lighting wiring alterations” as the term
is used in the Energy Standards, and it is not mandatory to comply with §141.0(b)2K
requirement. Note: Alterations that include adding, removing, or
replacing walls or ceilings resulting in redesign of the lighting system must
meet the requirements of Table
141.0-E, as specified in §141.0(b)2I.
The following wiring alterations
are not required to comply with §141.0(b)2K, Lighting Wiring Alterations:
1.
Alterations strictly limited to addition of lighting controls.
2. In
an enclosed space where wiring alterations involve only two of fewer
luminaires.
3.
Alterations that would cause the disturbance of asbestos, unless the alterations
are made in conjunction with asbestos abatement.
Acceptance testing
requirement of §130.4
is not required for wiring alterations where lighting controls are added to
control 20 or fewer luminaires.
Example 5-42
Standards for Lighting Wiring Alterations
Question
If occupancy sensing controls are added to a suite of
office spaces, does this addition trigger the requirements of §141.0(b)2K (Lighting Wiring Alterations)?
Answer
No, since the alterations are limited to the addition of
occupancy sensing controls, it does not trigger any of the requirements of
§141.0(b)2,
including Lighting Wiring Alterations.
Example 5-43 Skylights
Question
A 30,000 ft² addition has a 16,000 ft²
space with an 18 ft high ceiling and a
separate 14,000 ft² space with a 13 ft high ceiling. The lighting power density
in this building is 1 W/ft². Do skylights have to be installed in the portion of the
building with 18 ft ceiling?
Answer
Yes. §140.3(c) requires skylights in enclosed spaces that are greater
than 5,000 ft² directly under a roof with a ceiling height over 15 ft. In
this example the area with a ceiling height greater than 15 ft is 16,000
ft²;
therefore there are mandatory skylight requirements. (Note: skylight
requirements do not apply in climate zones 1 and 16).
Example 5-44 Skylighting requirements for alterations
Question
A pre-existing air-conditioned 30,000 ft² warehouse with a 30 ft
ceiling and no skylights will have its general lighting system replaced as part
of a conversion to a big box retail store. Are skylights prescriptively
required?
Answer
No. The
general lighting system is being replaced and is not “installed for the first
time.” Thus, §141.0(b)2F does not apply and therefore does not trigger the
requirements in §140.3(c) for skylighting