Sensor Adjustment - LEGRAND Wattstopper UT-300-1 Manual

Using an Octagonal J-Box
1. Pull the low voltage wires from the power pack into the J-Box through the conduit
knockout.
2. Connect the low voltage wires to the appropriate terminals on the sensor.
3. Loosen the appliance mounting screws attached to the J-Box
4. Align the sensor in the J-Box so that the mounting screws on the box match the key
holes on the sensor's rear housing.
5. Push the sensor up into the J -Box and twist it so that the mounting screws are seated
in the keyhole slots.
6. Tighten the two screws to secure the sensor to the J-Box.
7. Snap the front cover onto the sensor.
NOTE: This unit is pre-set for basic operation as described in this guide. Adjustment is optional.
The sensors are factory preset to allow for quick installation in most applications.
Verification of proper wiring or coverage, or customizing the sensor's settings can
be done using the following procedures. To make adjustments, open the Front
Cover with a small screwdriver.
Before making adjustments, make sure the office furniture is installed, lighting
circuits are turned on, and the HVAC systems are in the overridden/ on position.
VAV systems should be set to their highest airflow. Set the Time Delay to the
desired settings. See DIP Switch Setting.
To Test Occupancy Sensors
1. Ensure the Time Delay is set for Test Mode* using the "Test Mode/20
minutes" setting. (DIP Switches 1, 2, & 3 are OFF).
2. Ensure that the Ultrasonic Sensitivity trimpot is set to about 70%, clockwise.
3. Remain still. The LED should not flash. The lights should turn off after 5 seconds. (If not, see Troubleshooting.)
4. Move about the coverage area. The lights should come ON. Adjust the Ultrasonic Sensitivity as necessary to provide the desired
coverage (Green LED indicates activation from the ultrasonic sensor).
When testing and adjustment are complete, reset DIP Switches to the desired settings, and replace the cover on the sensor.
*Test Mode is a temporary state that starts when you first set the sensor's DIP Switches for the "Test Mode/20 minutes" (Switches 1, 2,
3 OFF). If you need to invoke the Test Mode and the DIP Switches are already set for Test Mode/20 minutes, toggle DIP Switch 1 ON,
then back to the OFF position. This provides a 10 minute test period. During the test period, the Time Delay is only 5 seconds.
The Light Level feature holds lights off upon initial occupancy if adequate ambient light exists. It will not turn the lights OFF if they are
ON. The default setting is for maximum, meaning that even the brightest ambient light will not hold the lights OFF.
Notes on Functionality
• Avoid mounting the sensor close to lighting fixtures.
• Adjust during daylight hours when ambient light in the area is at desired level.
• Light Level cannot be enabled while Test Mode is active. Either wait for Test Mode to expire or select any of the other Time Delay
settings before enabling the Light Level feature.
• PIR occupancy indicator LED may still respond when lights are being held OFF. LED will also flash periodically to indicate the
sensor has Light Level enabled.
• Light Level settings are only saved in the event of a power loss. Disabling Light Level and then reenabling it will not return it to
previous settings.
• If Test Mode is enabled after Light Level has been set, Light Level functionality will cease to function throughout the duration of Test
Mode. When Test Mode period expires, the Light Level functionality will resume, even if the DIP Switches remain set to Test Mode.
Setting Light Level
1. Make sure Test Mode is not active.
2. Toggle the state of the sensor, by briefly pressing the Light Level button, to include or exclude the lighting load from the light level
calibration. Open the Front Cover and locate the Light Level pusbbutton. See Sensor Adjustment.
3. Press and hold the Light Level button for 2 or more seconds, or until the detection LED turns ON. Do not exceed 5 seconds.* The
sensor enters setup mode, as indicated by the rapidly flashing LED. The LED will flash throughout the setup process. Occupancy
indication from the LED is disabled during setup.
4. Move away from the sensor to avoid interference with light level detection. The sensor measures the light level for a 10 second
period, then averages the readings and automatically sets the level that will be used as the new setting. The sensor will hold lights
off when the ambient light exceeds this setting.
5. When the LED stops flashing, replace the Front Cover.
*Disabling Light Level
• Pressing the pushbutton for 5 seconds or more resets the light to default (maximum).
• Press and hold the Light Level button for 5 seconds or until the detection LED turns ON and then OFF. The LED flashes rapidly for
10 seconds after the setting has changed.

SENSOR ADJUSTMENT

LIGHT LEVEL FEATURE
3
4" Octagonal J-Box
(at least 1.5" deep)
Ceiling
Depluggable
Terminal
Rear
Housing
Screws
Front
Cover
J-Box Mount