Building Lighting Controls Energy Savings & Code Requirements for Your Building Presented by: Alyssa Weber, EIT, LEED AP BD+C Controls Manager Visual Interest

How are Lighting Controls Utilized in Your Building? What type(s) of systems are you working with? Centralized Distributed Standalone sensors/switches Switching or dimming What are the advantages/disadvantages of your system(s)? What are the primary issues you have with lighting controls in your building? What occupant issues do you deal with as a result of lighting control systems? How often are you renovating your building/spaces?

Lighting Control Best Practices: Standalone Lighting Control Occupancy sensors, daylight sensors, local dimmers & switches. Advantages: Simple to install and maintain Short wiring runs No complicated programming! Disadvantages: No global override or sweep on/off Simple on/off/dim control – advanced programming functions typically not available Does not meet requirements of new energy codes for every application

Lighting Control Best Practices: Networked Centralized or Distributed? Networked Centralized Lighting Control: Relay or Dimming Panels Advantages: Centrally located equipment - ease of maintenance Straightforward maintenance and programming – been around for years! Disadvantages: Takes up valuable space in electrical rooms Long control wiring runs back to panel Less flexibility – what’s wired is wired!

Lighting Control Best Practices: Networked Centralized or Distributed? Networked Distributed Lighting Control: Switching or Dimming Advantages: Less space taken in electrical rooms Less/shorter wiring requirements More flexibility – keeping control in the space it is needed Disadvantages: Equipment located throughout the building ceiling space, closets, etc Newer technology – programming often required for small changes Requires costly processor to network distributed equipment

Lighting Control Best Practices: Networked Centralized or Distributed?

Lighting Control Best Practices: Standalone Distributed Control Standalone Distributed Lighting Control Short wiring runs, more flexibility, equipment located throughout the building spaces Removes requirement for costly processor Meets new energy code requirements for less cost!

Lighting Control Best Practices: Integration Considerations What level of integration do your buildings have? Does your lighting control to integrate with: BAS Fire Alarm Security Systems AV Automated Shades

IECC 2015 Any project pulling a permit in Denver after September 2016 will be required to meet IECC 2015. Many jurisdictions have already adopted it. Controls must be upgraded if 50% or more of existing light fixtures are replaced. Major differences in control strategies from the last IECC code (2009 or 2012). Expect a higher cost for additional control requirements.

IECC 2015: Occupancy Control Vacancy control requirements: Manual override must be provided Sensors must be programmed for manual on/automatic off, aka vacancy functionality. OR sensors must be programmed such that the lights automatically turn on to 50%, with manual control to 100%. Vacancy control is required in: Training, multi-purpose, meeting, classrooms Copy/print rooms Lounges and employee break rooms Private offices Storage rooms, janitorial closet Locker rooms Warehouses Any enclosed room > 300SF Occupancy control requirements: Sensors can be programmed for automatic on/automatic off, aka occupancy functionality. No manual override switch/dimmer is required. Occupancy control is required in: Public corridors Stairways Restrooms Primary entrances Lobbies

IECC 2015: Occupancy Control What does this mean for your building? Manual overrides/switches where only occupancy sensors were previously required. Programmable control may be required where standalone was previously acceptable.

IECC 2015: Daylight Control Daylight Control: Major Code Change! Required in spaces adjacent to windows or skylights. NOT required where 150W or less of lighting is connected. NOT required where openings are less than 24SF Automatic dimming control of daylight zones required!

IECC 2015: Daylight Control What does this mean for your building? Major change from previous energy code! Daylight sensors and dimmable fixtures will be required adjacent to any windows/skylights. Programmable control WILL be required where standalone was previously acceptable.

IECC 2015: Light Reduction Control Spaces are required to have manual control that allows occupant to reduce the lighting by at least 50%. Achieved by dimming, dual-level switching, or alternate switching fixtures in space. Not required where daylight control is provided. What does this mean for your building? Dimming, dual-level switching, or dual-level zoning is required. Multiple-levels of control are required where single-level was previously provided. LED fixtures inherently are dimmable, so dimming will be much more common.

IECC 2015: Time Scheduling Control Time-clock requirements 7-day timeclock schedules and programmed holiday shutoffs. Manual override switches with maximum 2-hour sweep. Required for: Malls, arcades Auditoriums Retail spaces Industrial facilities Arenas Any area not required to have light reduction control What does this mean for your building? Not much has changed. Continue to have timeclock override/sweeps for many spaces in your building.

IECC 2015: Time Scheduling Control Site Lighting Requirements Photocell to control lights based on daylight. Timeclock programmed to turn lights on/off with dawn/dusk Required to reduce exterior lighting by at least 30% between 12am-6pm (depending on operating hours) Completed projects must have engineer’s stamp on functional testing reports for lighting control system. What does this mean for your building? Major change from previous energy code! Site fixtures will need to be dimmable or step-dimmed (dual-circuit) Control system will expand to accommodate additional zones/dimming. Option for site fixture-integrated controls in lieu of centralized to achieve this requirement.

Building Lighting Controls Questions? Thank you!