Mounting The Sensor; Sensor Adjustment - LEGRAND Wattstopper UT-305-1 Mode D'emploi

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Directly to Ceiling

1. Attach the plastic spring clips to the edge of the sensor in the slots provided.

2. Cut a 3.5" to 4" round hole in the acoustic ceiling tile at the mounting location. A 3.5" hole

is recommended for a secure fit.

3. Pull the low voltage wire from the power pack to the sensor through the hole.

4. Connect the low voltage wires to the appropriate terminals on the sensor.

5. Push the sensor up through the hole until the Spring Clips hold the sensor securely in

place.

6. Snap the front cover onto the sensor.

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.