Carbon Reduction Campaign: Congregations - How to Install Occupancy Sensors
1. Decide where to install occupancy sensors in your church. Occupancy sensors provide the most energy savings when used in areas where use is infrequent or unpredictable. Classrooms, restrooms, offices, copy rooms hallways and storage closets are optimum locations for occupancy sensors.
2. Choose the appropriate occupancy sensor for your space. Make sure the sensors you purchase are compatible with the electrical requirements of the rooms where they will be installed. Consider factors such as the shape of the room to determine what type of sensing technology you need. Occupancy Sensors use either infrared or ultrasonic technology. Passive infrared sensors detect temperature changes in a room, and work well where the entire room is within the sensor's field of view. Ultrasonic sensors use high frequency sound and can detect motion around corners. You can purchase a device that utilizes both forms of technology. These are more expensive, but will decrease the risk of the lights turning off while the room is still occupied.
3. Install Sensors in the in the appropriate location for each room. Do not install sensors behind a coat rack, door, book case, or any other object that will block the sensor. Choose a centralized area so that the lights are activated as people enter the room. Optimum locations will depend on the shape of the room, expected locations of occupants, and the potential for detecting false positives (people walking in the hall outside the room). Follow the installation directions for each device you purchase and consult a professional for assistance.
4. Set the time delay to maximize energy savings. Time delay selection can greatly impact the energy savings achieved using occupancy sensors. Choose the lowest setting that will still allow occupants to engage in low motion activities without being left in the dark. Try 5 minutes.