Placement Guidelines - LEGRAND Wattstopper Mode D'emploi

Depending upon obstacles such as furniture or partitions, the area of coverage may be less or more
than the sensing distances shown in the coverage pattern. This must be considered when planning
the number of sensors and their placement. It is also recommended to place the sensor 4 to 6 feet
away from air supply ducts as rapid air currents or the differences in temperatures may cause false
activations.
Mount the sensor to the ceiling. The CI-355 is designed for a ceiling height of about 8-12 feet.
Mounting above or below this range will significantly affect the coverage patterns. Be aware that as
you decrease the mounting height, you decrease the range and increase the sensitivity to smaller
motions. Conversely, when you increase the height, you increase the range and decrease the
sensitivity to smaller motions. At heights of more than 12-14 feet, you may start to significantly reduce
sensitivity. As a general rule, each occupant should be able to clearly view the sensor.
Often the best location to install a CI- 355 in a closed office is off-center. Avoid placing a sensor directly in
line with an open door through which it has a clear view out, as the sensor may detect people walking by.
Masking the PIR Lens:
Opaque adhesive tape is supplied so that sections of the PIR lens can be masked. This restricts the
sensor's view and allows you to eliminate PIR coverage in unwanted areas such as hallways outside
of the desired coverage area. Since masking removes bands of coverage, remember to take this into
account when troubleshooting coverage problems.
Optimizing Coverage:
To get complete coverage in an open office area, install multiple sensors so that there is an overlap
with each adjacent sensor's coverage area.
For open office areas with partitions it is best to place sensors over intersection of four workstations.
For large areas of coverage use multiple sensors.
WARNING: DO NOT INSTALL THE SENSOR IN A SPACE
CONTROLLING A TOTAL LOAD THAT IS HIGHER THAN THE RATING
OF THE DEVICE. EACH SENSOR WILL NEED TO SWITCH THE ENTIRE
LOAD EVEN IF ADDITIONAL SENSORS ARE INSTALLED. RISK OF
OVERLOAD, PRODUCT DAMAGE, SMOKE AND/OR FIRE MAY RESULT.
Multiple Sensors Connected in Parallel
WARNING: This application does not allow for Load to increase.

PLACEMENT GUIDELINES

WIRING DIRECTIONS
#12 to #16 AWG
Strip Gauge
Cu Wire Only
2
WARNING: TURN THE POWER
OFF AT THE CIRCUIT BREAKER
BEFORE INSTALLING SENSORS.
Single Sensor, Single Load