Advanced Lighting Controls - Ameren...Advanced Lighting Controls Steven Mesh, LC, IESNA, Lighting...

Advanced Lighting Controls

Steven Mesh, LC, IESNA, Lighting Education & Design

Energy Savings Made Easy | 2017 Business Symposium

Disclaimers

The speaker does not endorse the use of any specific vendor or

product.

This presentation may not be recorded, copied or distributed in any form without written permission of the speaker.

Acknowledgements

Thanks to DesignLights Consortium for permission to use certain

content from their new training course on Networked Lighting

Controls.

Introduction

• Technology is changing and

improving… FAST!

• Systems designed from the

ground up to reduce complexity

and cost

• Easier (and less costly) to install,

commission, use than ever

before

• New system capabilities that

provide new value to customers

The Good News

Three Technology Innovations that Reduce Cost and Complexity of Install

1. Integrated or “Embedded” Sensors and Controls

2. Wireless

3. Apps or Software-based Tools to Configure the System

Integrated or Embedded Sensors

✔Pre-installed means you don’t have to install them

✔Pre-configured for out-of-the-box functionality

✔Fewer components

✔Single Warranty

✔No control wiring between components

✔Eliminates task of figuring out where to place sensors

✘May have higher equipment costs

✘Limited choice of fixtures available

Wireless

✔Reduces or eliminates control wiring

and terminations

✔More flexibility in how devices are

connected and configured

✘Distance limitations

✘May experience interference with

some systems in some applications

App or Software Tools to Configure

See Light Fixtures and

Devices in Room by

Signal Strength. Flash

to identify.

Click to Select or

Drag and Drop into

Configure Settings

Remote Controls?

✘No 2-way communication

✘What setting have you chosen?

✘What setting are the lights at?

✘Where’s the remote?

✔Point at the light you are configuring

Lighting Control Basics and Strategies

Lighting Control System Basics

• Functions – in order to unlock the full power of a lighting control

system, it must be able to do two main things:

✔Switching – turning lights on and off

✔Dimming – reducing the amount of light output

• Control strategies – the strategies shown on subsequent slides are

some of the methods used to switch and dim lights based on different

types of input.

» Addressability – If every single fixture, switch and sensor has its own

“address”, this provides ultimate flexibility for commissioning and

programming the system.

» Grouping/Zoning – With traditional controls, groups/zones of fixtures

are determined at the design or installation phase. They are “locked-

in” and can’t be changed without re-wiring. Conversely, addressable

systems allow you to program and change groups/zones at any time.

» DLC Qualified Systems are Addressable - All DLC qualified control

systems are required to have the capability to be addressable

(meaning all components are “individually addressable”).

» Analog vs. Digital – transmission of control signals

Time Scheduling

6 am 6 pm

Time of day

12 am 12 am Noon

Turn off lights after hours or when a space is not normally used.

Lights off Lights on Lights off

Energy Savings: 10-30%

Time Scheduling

High-End Trim / Task Tuning

6 am 6 pm

Time of day

12 am 12 am Noon

Reduce the maximum light level for an entire space or building during

normal occupied hours.

Graphic: Lutron

High-End Trim / Task Tuning

Advanced Dimmer with High-End Trim Capability

Software-based High-End Trim

Daylight Harvesting

6 am 6 pm kW

Time of day

12 am 12 am Noon

Dim or turn off lights based on available natural light.

Daylight Harvesting

Occupancy / Vacancy Sensing

6 am 6 pm kW

Time of day

12 am 12 am Noon

Turn off lights when the space is unoccupied (vacant).

Occupancy / Vacancy Sensing

Personal Control

6 am 6 pm kW

Time of day

12 am 12 am Noon

Dim or turn off lights based on personal preference or needs.

Personal Control

Variable Load Shedding (“Demand Response”)

6 am 6 pm kW

Time of day

12 am 12 am Noon

Dim or turn off lights during periods of peak demand.

Reduces Peak Power

Aggregate Strategies for a Given Space

6 am 6 pm

Time of day

12 am 12 am Noon

Aggregate strategies for that space, and the resulting energy use.

Energy Code Requirements

• Start by considering applicable codes:

We will assume that the our example projects have to meet Title 24-2016 or ASHRAE 90.1-2013.

Other codes such as IECC-2015 have many similar requirements.

• What requirements and restrictions apply? “Automatic shutoff”:

Most codes require some method of “automatic shutoff” or at least “automatic partial shutoff”. In open office areas, this may be achieved by scheduling lights to shut off or by a signal from another system (such as a BMS). However, for our purposes, we will use occupancy sensors to automatically turn lights ON, then automatically turn lights OFF upon vacancy.

In Title 24-2016, zones for “automatic shutoff” cannot exceed 5,000 ft2. In ASHRAE 90.1-2013, zones for “manual override” cannot exceed 5,000 ft2 either. A manual override is typically a wallbox switch or dimmer that can keep the lights in that zone ON or OFF for up to two hours regardless of the state of the occupancy sensor.

Designing and Deploying a Lighting Control System – Process

• “Daylight harvesting”:

In Title 24-2016, fixtures in the “primary” as well as “secondary” daylight zones must be automatically controlled based on input from photosensors.

The primary daylight zone starts at the window wall and extends to a depth equal to the window head height. Therefore, if the window head is 10’-0” AFF, the primary daylight zone is 10’ wide, starting at the window wall.

The secondary daylight zone starts at the end of the primary daylight zone and also extends to a depth equal to the window head height.

Different types of photosensors work in a variety of ways (open-loop, closed-loop, switching, dimming, etc.).

Which photosensors talk to which fixtures? This is a question of “mapping”. There are different methods and levels of “mapping” depending on the lighting control system.

It’s important to understand what each system you’re considering will allow (or not!) in terms of mapping.

• “Local/Area” controls:

Fixtures in most spaces must be provided with some form of local control

(typically a wallbox switch or dimmer). In ASHRAE 90.1-2013, in open office

areas ≤10,000 ft2, one switch must be provided for each area of no more

than 2,500 ft2 of space. In areas >10,000 ft2, one switch must be provided for

each area of no more than 10,000 ft2 of space.

Since the size of these areas differ from those for the “automatic shutoff”

requirement (5,000 ft2 max), you’ll have to decide how to configure all of

these zones to:

meet all applicable code requirements, and …

work based on the equipment and software in any given lighting control

system.

• Note that any zone may be more restrictive (smaller in size) than those required

by code.

• Owner’s Project Requirements (OPR) – what do the

owner/occupants want and need?

• Basis of Design (BOD) – how will the proposed controls achieve

• Note:

required by LEED

required by California Title 24

Control Zones for “Automatic Full OFF” & “Manual Override” (5,000 ft2 max.)

22,302 ft2 total open office area

4,873 ft2

2,556 ft2

4,873 ft2

5,000 ft2 5,000 ft2

Occupancy sensors – open office & reception

(large coverage pattern, first pass)

Based on the zone delineations as previously shown, occupancy sensors

would work “in parallel” in most of the zones. Almost all systems have the ability to

allow for this parallel operation, similar to how standalone wired occupancy sensors can be connected to work “in parallel”.

Occupancy sensors – zoning based on occupancy sensors

(modified zones, second pass)

Why increase the # of zones? If you need to use more occupancy sensors anyway, you might as well decrease

the zone sizes so you have one zone per occupancy sensor. Smaller zone sizes for occupancy sensors may increase the

energy savings, and most systems can handle a virtually unlimited # of zones in the software.

(smaller coverage pattern, third pass)

In this office plan, we have a tricky condition with these particular

occupancy sensors. We now have two rows of sensors, but three rows of fixtures. Each fixture must be

mapped to one sensor or another. So this level of granularity may not be optimal for this particular space.

(fixture-integrated, fourth pass)

When each fixture has its own occupancy sensor, it is automatically in

its own zone by default. Most systems have some way of “grouping” fixtures together. For

example, all (9) 2x2s in the reception area might be grouped to operate the same way.

ASHRAE 90.1-2013 Daylighting Zones

(using open-loop sensors)

Occupancy & Daylight Zones Overlay –

Mapping

In this example, each façade of the open office area (N-E-S-W) has

an associated open-loop photosensor. Note that the control system would have to allow unrestricted mapping of a

photosensor to any fixture, regardless of which “occupancy” or “daylight” zone it’s in. Not all systems allow for unrestricted mapping. Verify with each vendor.

Occupancy & Daylight Zones Overlay –Mapping

ASHRAE 90.1-2013 Daylighting Zones

(using closed-loop sensors)

Occupancy & Daylight Zones Overlay –

Mapping

In this example, each “occupancy” zone also contains an associated

photosensor. Note that the control system would have to allow unrestricted mapping of the photosensor to any fixture in that occupancy zone,

regardless of which “daylight” zone it’s in. Not all systems allow for unrestricted mapping. Verify with each vendor.

Southeast Corner Detail

Southeast Corner Detail Showing Room Types

Occupancy Sensors, Photosensors, Switches (manual control)

Warehouse plan

Warehouse building information

(41,811 ft2 total area)

Warehouse shutoff zones per ASHRAE 90.1-2013 (5,000 ft2

Warehouse shutoff zones per ASHRAE 90.1-2013

(5,000 ft2 max) – alternate layout

Warehouse daylight (toplighted) zones per ASHRAE 90.1-

Types of Lighting Controls

Stand-Alone Controls

Descriptions

• Toggle switch – turns lights on and off

• Occupancy sensor – turns lights on upon occupancy or off

upon vacancy (or both)

• Hotel key-card switch – prevents use of lights in guest room if

no one is present (serves as a “master” power switch)

• Timer (“countdown”) switch – turns lights off after specified

period of time

• Dimmer – allows occupants to dim or increase light levels

• Photosensor – switches or dims lights based on availability of

daylight

Benefits

✔ No control wiring or wireless connectivity required

✔ Easy to install (familiar wiring methods)

Challenges

✘ Limited to controlling specific branches or switch legs

✘ Combining multiple controls/strategies is difficult

✘ Difficult to meet energy code requirements

✘ No central way to program; settings are on each

device

✘ Typically result in less overall energy savings

Low-Voltage Relay Panel Systems

Benefits

✔ Centralized control and programming of some

settings

✔ Capable of more advanced control strategies than

stand-alone controls

Challenges

✘ Requires low-voltage wiring and associated home

✘ Limited number of inputs to do multiple control

strategies (e.g. limited sensor inputs)

✘ Can only control loads in groups based on physical

circuitry (branches or switch legs)

✘ Small LCD displays can make it harder to program

and troubleshoot

Stand-Alone Fixture-Integrated Sensors

Benefits

✔ Factory Installed; no control wiring

✔ Easy to specify

✔ Granular control greater energy savings

Challenges

✘ Controls only the fixture it is installed in – can’t link

together sensors or form groups

✘ May result in patchwork appearance in space

✘ Each sensor/fixture must be programmed

individually

Room-Based Controls (Room Controllers)

Benefits

✔ Many with out-of-the-box, pre-programmed

functionality

✔ Designed for easy code compliance of single room

✔ Simplified CAT5 connections

Challenges

✘ No fixture addressability

✘ Can only control loads in groups based on physical

circuitry (branches or switch legs)

Advanced Features of Comprehensive Systems

Asset Tracking Space Utilization Indoor Positioning Diagnose and

Report

Conference Room Scheduling Security Energy Tracking

Integrate with BMS/HVAC

Summarizing Simplified Systems

» Easier to install, commission, and use

» Basic feature set to deliver energy savings and

code compliance

» Appropriate for wider range of customers

• Less Sophisticated

• Small Business

• Tenant Leased Space

Simplified Systems

Summarizing Comprehensive Systems

» More Savings, More Flexibility, More Options

» Advanced features deliver more than energy savings

» Get energy data and more…

…for the right customer

Comprehensive Systems

Simplified Network Systems

Wireless, Integrated Sensors

Benefits

✔ Easy to install and commission

✔ No control wiring – great for existing buildings

✔ Factory installed sensors/controllers eliminate

compatibility problems

✔ Commission with Smartphone or Remote Control

✔ Program and reprogram zones without re-wiring

Challenges

✘ Wireless may require clearance from IT

✘ New tech contractors may be unfamiliar with

✘ Responsibility for smartphone/remote?

Examples of DLC Qualified Systems:

• Philips SpaceWise

• Lutron Vive

• Cree SmartCast

• Acuity nLight Air

Wired, No Integrated Sensor

Benefits

✔ Easy to install and commission than comprehensive

system

✔ Out-of-the-box functionality

✔ Wired connections

✔ Program and reprogram zones without re-wiring

Challenges

✘ Requires low-voltage control wiring between devices

and fixtures – not great for existing buildings

✘ Non-integrated sensors require careful sensor

placement and may require more complex

commissioning

• Acuity nLight (wired)

• WattStopper DLM (with individual fixture controllers)

Comprehensive Networked Systems

System with Server

Wireless multi-sensors (occupancy sensor &

photosensor)

Wired controllers

Wireless controllers

Server

System with Server

Benefits

✔ Addressability allows for unlimited flexibility in zoning

and rezoning

✔ Many programmable options – such as time delays,

target set points, schedules, etc.

✔ Ability to interface with BMS, Demand Response, etc.

✔ Monitor and report energy use and savings

Challenges

✘ Higher equipment and installation cost

✘ More complicated to specify, install, commission, and use

✘ Requires relatively sophisticated customer or 3rd party to

manage system

• Lutron Quantum

• Encelium

• enlighted

Types of Systems and Topologies

Wireless gateway

Wireless wallbox switch/dimmer

Existing circuit breaker panel

Home-run to panel Branch circuit (power wires) Constant-charging circuit (unswitched)

LEGEND:

2x2 fixture (normal power) with wireless controller, integrated occupancy sensor and photosensor EM fixture (integral battery) with wireless controller, integrated occupancy sensor and photosensor

Northwest quadrant

Southwest quadrant

Northeast quadrant

Southeast quadrant

Simplified Networked System, Wireless, with Fixture-Integrated Sensors & BACnet connection

Cat 5 Ethernet network cable to BMS (communicates via BACnet)

animated

Office Plan – Showing Furniture and Recessed 2’x2’ LED Fixtures

22,302 ft2 total open office area – 35,200 ft2 floor plate including core

Office Plan – Showing Recessed 2’x2’ LED Fixtures and 2’x2’ Ceiling Grid

100 ft2 per fixture – typical density of recessed 2’x2’ fixtures

22,302 ft2 total open office area 2’x2’ LED fixtures located 10’ x 10’ O.C.

Electrical closet with circuit breaker panel

Black lines – “normal” lighting branch circuits Red lines – “constant charging circuits” (from normal panel). These keep the integral batteries charged. When power fails, EM fixtures sense the power loss and switch to integral battery power for emergency egress lighting.

“EM” fixture

“normal” fixture

animated

Typical existing circuitry – EM fixtures with integral batteries

22,302 ft2 total open office area 2’x2’ LED fixtures located 10’ x 10’ O.C.

Electrical closet with circuit breaker & EM panels

“EM” fixture

“normal” fixture

Black lines – “normal” lighting branch circuits Red lines – “EM” lighting branch circuits. EM fixtures can operate normally (depending on the system), but have to bypass any controls in an emergency condition.

animated

Typical existing circuitry – EM fixtures powered by separate EM circuit

and power supply

Simplified Network Systems, Wireless, with

Fixture-Integrated Sensors

Wireless gateway

LEGEND:

Northwest quadrant

Southwest quadrant

Northeast quadrant

Southeast quadrant

animated Simplified Networked System, wireless, with Fixture-Integrated

Sensors

Simplified Network Systems, Wireless, with Fixture-

Integrated Sensors and BACnet Connection

Wireless gateway

LEGEND:

Northwest quadrant

Southwest quadrant

Northeast quadrant

Southeast quadrant

Cat 5 Ethernet network cable to BMS (communicates via BACnet)

animated Simplified Networked System, Wireless, with Fixture-

Integrated Sensors & BACnet connection

Simplified Network Systems, Wired, with Zone-

based Sensors

Occupancy sensor

Photosensor (open-loop)

Local wallbox switch/dimmer

Cat 5 Ethernet network cable

LEGEND:

2x2 fixture (normal power) with integral controller EM fixture (integral battery) with integral controller

West loop East loop

animated Simplified Networked System, Wired, with Zone-based

Sensors

LEGEND: Primary daylight zone Secondary daylight zone Occupancy zones (for “automatic shutoff”

Simplified Networked System, Wired, with Zone-based Sensors

(meeting code requirements)

Comprehensive Networked Systems with Server,

wireless, with integrated sensors

Wireless gateway

LEGEND:

Cat 5 Ethernet cable

Server (in IT room)

animated Comprehensive Networked System with Server – wireless with

integrated sensors

Comprehensive Networked Systems with Cloud-

based Server, Wireless, with Integrated Sensors

Wireless gateway

LEGEND:

Cat 5 Ethernet cable

Cloud-based server

Connection to cloud (via owner’s IT infrastructure)

animated Comprehensive Networked System with Server – wireless, int.

sensors, with cloud-based server

Comprehensive Networked Systems with Server –

wired, with Zone-based Sensors

Occupancy sensor

Low-voltage cable for control signal network

LEGEND:

2x2 fixture (normal power) with integral controller EM fixture (integral battery) with integral controller

Server (in IT room) plus wired gateway(s)

animated Comprehensive Networked System with Server – wired

with Zone-based Sensors

Comprehensive Networked Systems with

Server – wired, with Zone-based Sensors

(using DALI protocol for communication to fixtures; with

separate proprietary network for sensors and switches)

Occupancy sensor

LEGEND:

2x2 fixture (normal power) EM fixture (integral battery)

Server (in IT room) with DALI gateway(s)

DALI “universe” (low-voltage network – up to 64 addresses)

Cat 5 Ethernet or proprietary network cable for sensors & switches

animated Comprehensive Networked System with Server – wired with

zone-based sensors – DALI

Comparing Wiring and Termination Requirements of

Each Systems

Low-Voltage Wiring Required by System Type (ft.)

# of Required Wiring Terminations by System Type

Comprehensive Networked Systems with Server –

LEGEND:

Local wallbox switch/dimmer (PoE)

Cat 5 Ethernet cable for fixtures & switches

Network switch (in IT room)

2x2 PoE-enabled fixture (normal power) PoE-enabled EM fixture (with integral battery)

Power to Network switch

animated Comprehensive Networked System with Server – PoE

Control Zones for “Automatic Full OFF” & “Manual Override” (5,000 ft2 max.)

22,302 ft2 total open office area

Daylighting Zones

LEGEND: 2x2 fixture (normal power) EM fixture with integral battery Existing circuit breaker panel Home-run to panel Branch circuit (power wires) Constant-charging circuit (unswitched) Occupancy sensor Photosensor (open-loop) Local 3-button wallbox switch/dimmer Low-voltage wires for 0-10V dimming signal Cat 5 Ethernet network cable for sensors & switches 3-relay room controller module

animated Room-Based System (Room Controllers)

Control System Schematics without Base Floor Plans

Simplified Networked System with Fixture-Integrated Sensors

Simplified Networked System with Fixture-Integrated Sensors & BACnet

connection

Simplified Networked System without Fixture-Integrated Sensors

Comprehensive Networked System with Server – wireless

with integrated sensors

Comprehensive Networked System with Server – wireless

with cloud-based server

Comprehensive Networked System with Server – wired without

integrated sensors

Comprehensive Networked System with Server – wired without integrated

sensors – DALI

Comprehensive Networked System with Server – PoE

Room-Based System (Room Controllers)

Specs & Drawings

Controltype Vendor VendorCatalog# Vendordescription Genericdescription

C-WG Lutron HJS-2-FMPREMVIVEHUBFLUSH2PSFLUSH

MOUNTWirelessgateway;controlsareaupto10,000squarefeet

C-FC1 Lutron FCJS-010 FIXTURECONTROL0-10VFixturecontroller;withintegralrelay,0-10Vdimmingoutput;input

forFC-SENSOR;controlsfixture(s)upto1amp

C-FC1S Lutron FC-SENSOR FIXTURESENSORFixture-integratedsensor(photosensorandPIRoccupancysensor)

forusewith1-ampcontroller

C-FC8 Lutron RMJS-8T-DV-B POWPAK0-10V434Fixturecontroller(withintegralrelay,0-10Vdimmingoutput;

controlsfixture(s)upto8amps

C-PS Lutron LRF2-DCRB-WH DAYLIGHTSENSOR1-WAYFM434 Stand-alonephotosensor

C-OS Lutron LRF2-OCR2B-P-WHLUTRONOCCUPANCYSENSOR1WAYFM

434R2Stand-alonePIRoccupancysensor

C-WS Lutron PJ2-3BRL-GWH-L01PICORF434WLED3BRLGLOSSWHLIGHT

Switchwith5buttons(on/off/raise/lower/favorite);battery

operated;canbeinstalledinwallplate(CW-WSWP)

C-WSWP Lutron CW-1-WH CLAROWALLPLATE1GNGWHDecora-stylewallplateforsingle-gangswitchbox;forusewithPico

wirelessswitch

C-WSAK Lutron PICO-WBX-ADAPT PICOWALLBOXADAPTERKIT AdapterkitforusingPicowirelessswitchwithClarowallplate

C-EMR LVS,Inc. RRU-X-UM ---UL924-ratedrelayforemergencylighting;controlsline-voltage

poweraswellas0-10Vdimmingleadstofixture

C-NS (any) --- --- 5-portnetworkswitch

ControlsClassControlDevices

Quadrant

(table) Space/Zone Fixture(s)

Associated

controldevices Briefdevicedescription

Quantityofassociated

controldevices Notes

Entirearea n/a C-WG Wirelessgateway 1 Withpowersupply(requiresline-voltagepower).

C-FC8 8-ampcontroller 1 Connectbothfixturestoone8-ampcontroller.

C-OS Stand-aloneoccupancysensor 1

C-PS Stand-alonephotosensor 1

C-WS Wirelessswitch 1

C-EMR Emergencyrelay 1 Requires"normal"aswel as"emergency"powerfeeds.

C-FC1 1-ampcontroller 1 Pre-installed

C-FC1S Fixture-integratedsensor 1 Pre-installed

NE(table2)

NE-openofficeprimary

daylightzone(2)TYPEA-EM

NE-openofficesecondary

daylightzone(2)TYPEA

NE-privateoffice1 (1)TYPEA1

NE-privateoffice2 (1)TYPEA1

ControlSchedule

NW(table1)

NW-openofficeprimary

NW-openofficesecondary

NW-privateoffice1 (1)TYPEA1

NW-privateoffice2 (1)TYPEA1

Quadrant

(table) Space/Zone Fixture(s)

Associated

controldevices Briefdevicedescription

Quantityofassociated

controldevices Notes

ControlSchedule

SW(table4)

SW-openofficeprimary

SW-openofficesecondary

SW-privateoffice1 (1)TYPEA1

SW-privateoffice2 (1)TYPEA1

SE(table3)

SE-openofficeprimary

SE-openofficesecondary

SE-privateoffice1 (1)TYPEA1

SE-privateoffice2 (1)TYPEA1

SpaceTypePico(switch)"Favorite"

ButtonOccupiedLevel

Unoccupied

Behavior

Timeout

Sensitivity

High-End

Low-End

PrivateOffice1 40% 70% 0% Vac 1minute UltraLow 80% 1%

PrivateOffice2 40% 70% 0% Vac 1minute UltraLow 80% 1%

PrimaryZone:40% PrimaryZone:30%

SecondaryZone:40% SecondaryZone:60%

SpaceTypePico(switch)"Favorite"

ButtonOccupiedLevel

Unoccupied

Behavior

Timeout

Sensitivity

High-End

Low-End

Leftsideswitch:5%

Rightsideswitch:30%

PrimaryZone:40% PrimaryZone:30%

SecondaryZone:40% SecondaryZone:60%

InitialSequenceofOperations(Cx)

OpenOffice

ReprogrammedSequenceofOperations(RCx)

1% Occ/Vac 1minute Low 80% 1%

ConferenceRoom

(mergedprivateoffices)70%(groupsensors)

0%(group

sensors)Vac 1minute UltraLow 80% 1%

80% 1%OpenOffice 0% Vac 1minute Low

Application Guidance: Choosing a Networked

Control System for your project

Use DLC QPL to identify systems based on particular capabilities or

characteristics

Do’s and Don’t of Lighting Control System

Deployment

Issues/problems – G1

General suggestions:

» Training programs – Develop programs, similar to CALCTP or DLC

courses, to educate electrical contractors (and/or others) about

advanced lighting control systems.

» Project management – Designate one party up-front to develop

workflow, set target dates, communicate with team members and

vendors, etc.

» Project team – Create list of all possible required team members.

Office lighting retrofit projects will usually require an electrical

engineer and/or other specifiers.

THANK YOU!

Steven Mesh, LC, IESNA

Lighting Education & Design

San Francisco, CA

415-516-8126 steve@stevemesh.com

Advanced Lighting Controls - Ameren...Advanced Lighting Controls Steven Mesh, LC, IESNA, Lighting...

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