C405.2.8
Advanced
lighting controls. Any contiguous open office area larger than 5,000
square feet shall have its
general lighting controlled by
either:
1.
Luminaire-level lighting
controls (LLLC) conforming to the requirements of Section
C405.2.8.1.
2. Networked lighting
control (NLC) conforming to the requirements of Section C405.2.8.2.
C405.2.8.1
Luminaire-level lighting
controls. Where
luminaire-level lighting controls are
required, they shall be configured to provide the controls or equivalent
control function specified in Sections C405.2.1, C405.2.3, and C405.2.5. In
addition, each LLLC luminaire shall be independently configured to:
1. Provide for continuous full range
dimming.
2. Monitor occupant
activity to brighten or dim lights when occupied or unoccupied,
respectively.
3. Monitor ambient
lighting, both electric and daylight, and brighten or dim artificial light to
maintain desired light level. A maximum of 8 fixtures are permitted to be
controlled together to maintain uniform light levels within a single daylight
zone.
4. Allow configuration and
reconfiguration of performance parameters for each control strategy including:
High trim and low trim set-points, timeouts, dimming fade rates, and sensor
sensitivity adjustment.
5.
Construction documents shall include a submittal of a sequence of operations
including a specification outlining each of the functions required by this
section.
6. Luminaires shall be
configured with high end trim in accordance with Section C405.2.8.3.
C405.2.8.2
Networked
lighting control (NLC). Where NLC are required, they shall be configured
to provide controls and minimum function as specified in Section C405.2. In
addition, each NLC luminaire shall be independently configured to:
1. Provide for continuous full range
dimming.
2. Each luminaire shall be
individually addressed.
EXCEPTIONS TO ITEM 2:
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1. Multiple luminaires mounted on no more than 12
linear feet of a single lighting track and addressed as a single
luminaire.
2. Multiple linear luminaires that are ganged together
to create the appearance of a single longer fixture and addressed as a single
luminaire, where the total length of the combined luminaires is not more than
12 feet
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.
3.
Monitor occupant activity to brighten or dim lighting when occupied or
unoccupied, respectively.
4.
Monitor ambient lighting, both electric and daylight, and brighten or dim
artificial light to maintain desired light level. A maximum of 8 fixtures are
permitted to be controlled together to maintain uniform light levels within a
single daylight zone.
5. Allow
configuration and reconfiguration of performance parameters for each control
strategy including: High trim and low trim set-points, timeouts, dimming fade
rates, and sensor sensitivity adjustment.
6. Allow for demand response load
shed.
7. Construction documents
shall include a submittal of a sequence of operations including a specification
outlining each of the functions required by this section.
8. Luminaires shall be configured with high
end trim in accordance with Section C405.2.8.3.
C405.2.8.3
High end trim.
Luminaires subject to high end trim shall be initially configured with the
following:
1. Programmed to limit the initial
maximum lumen output or maximum lighting power to 85 percent or less of full
light output or full power or to meet the target light level documented in
project sequence of operations using the least amount of power.
2. High end trim power levels are allowed to
automatically reset to accommodate lumen maintenance.
3. High end trim controls shall be accessible
only to authorized personnel.