A. Lighting in stairwells and common area corridors which provide access to guestrooms and dwelling units of high-rise residential buildings and hotel/motels shall be controlled with occupant sensing controls that automatically reduce lighting power by at least 50 percent when the areas are unoccupied.
Where are occupancy sensors required?
Occupancy sensors per C405. 2.2. 2 are required in all classrooms, conference/meeting rooms, employee lunch and break rooms, private offices, restrooms, storage rooms, janitorial closets, and other spaces 300 sq ft or smaller enclosed by ceiling height partitions.
Why do we need lighting controls?
Lighting control systems provide the desired amount of light where and when it is needed. They are used to maximize energy savings, satisfy building codes, provide safety & security or comply with green building and energy conservation programs.
Are occupancy sensors required by code?
Codes require the occupancy sensor turn the lights off within 30 minutes of the occupant leaving the space, ensuring energy savings. Control manufacturers recommend a 15- to 20-minute time delay as a good compromise between energy savings and lamp life.
Where are occupancy sensors required residential?
A vacancy sensor must be installed to control lights in bathrooms, garages, laundry rooms, and utility rooms. Outdoor lighting connected to a building must be controlled with a manual on/off switch plus an astronomical timeclock, or photocell and motion sensor, or photocell and time switch.
What is difference between motion sensor and occupancy sensor?
The Occupancy sensor detects presence of people or animals in the target monitored area. The motion sensor responds to moving objects only. The difference between them is occupancy sensor produce signals whenever an object is stationary or not while motion sensor is sensitive to only moving objects.
How far apart should Occupancy sensors be?
The simplest way to alleviate this problem is to keep the sensors more than 8 feet from HVAC vents. This prevents false triggering due to airflow and motion associated with the HVAC system. Ultrasonic sensors should be spaced more than 12 feet apart to reduce the risk of cross talk.
What is light control?
Light control is the ability to regulate the level and quality of light in a given space for specific tasks or situations. Controlling light properly not only enhances the experience, it helps to save energy by using light when and where it is needed most.
What are the 4 parts of a lighting control system?
Part 1 looks at four common types of lighting controls: panelboards, dimming controls, addressable controls, and relay-based systems. Lighting control is an effective way to save energy beyond using energy-efficient lighting sources and manual or sensor operated switches.
What are the different types of lighting system controls?
Understanding the different types of lighting control systems for your property
- Basic lighting controls.
- Pre-set lighting controls.
- Dimmer switches.
- Occupancy sensors.
- Motion sensor controls.
- Assisted lighting controls.
- Integrated lighting controls.
Are LED lights Title 24 compliant?
THe LED Lights title are 24 compliant for luminare efficiency, lifespan, dark sky compliance, and light quality. There may be things beyond our product that causes something to not be title 24 compliant in regards to the installation process of the light/fixture.
How does an occupancy sensor work?
Occupancy sensors that rely on ultrasonic technology send high frequency sound waves (that humans can’t hear) into an area and measure reflection patterns. When the pattern changes, the sensor considers the space occupied.
What is an occupancy sensor switch?
An occupancy sensor is an indoor motion detecting device used to detect the presence of a person to automatically control lights or temperature or ventilation systems. The sensors use infrared, ultrasonic, microwave, or other technology.
Which of the following areas require at least one fixture to be controlled by a vacancy sensor?
In bathrooms, garages, laundry rooms, and utility rooms, at least one light fixture shall be controlled by a vacancy sensor.
Are occupancy sensors required in bathrooms?
In California, Title 24 requires all luminaries in bathrooms to be high efficacy or shall be controlled by an occupancy sensor. A luminaire is the lighting industry’s term for light fixture.These requirements prevent low efficacy lamps being retrofitted in high efficacy luminaires.
What is considered high efficacy lighting?
High-efficacy luminaires must be designed to operate with energy-efficient light sources. Lamps and luminaires classified as high efficacy include luminaires using LED light sources exclusively that have been certified by the California Energy Commission, GU-24 sockets rated for CFLs or LED lamps, and others.
Does an occupancy sensor need a neutral?
Some require neutral wire, while others do not. Generally if no neutral wire is required, then the type of load is limited to incandescent lights. Some occupancy sensors/ motion detectors turn On automatically, while others are activated by push button. All occupancy sensors turn off automatically.
Can motion sensors work through walls?
They can detect motion over large areas entirely because they can sense through walls and other obstructions. The radio waves are at frequencies that penetrate most walls and are identified in multiple locations, not only at the site of the transmitter.
How many Occupancy sensors do I need?
Only one sensor is required to turn the lights ON and keep them ON. Note a minimum 20% overlap in coverage area is recommended to ensure reliability of detection. Most commercial building energy codes require lighting be turned OFF or reduced when it is not being used.
How many Occupancy sensors does a power pack have?
A single power pack can power either 4 sensors or 3 sensors and the MPSA auxiliary relay for multiple circuits. The Universal Voltage Power Pack is plenum rated and easily mounts either inside or outside a junction box or inside a fluorescent ballast cavity.
What is a dual technology occupancy sensor?
Echo Dual Tech Occupancy Sensors use passive infrared (PIR) and acoustic detection to provide reliable occupancy and vacancy sensing for lighting control. These sensors provide both automatic on and automatic off functionality working in conjunction with commands from local stations.
Contents