Leviton Decora OSSMT-TM Installation Instructions

WARNINGS AND CAUTIONS:

• DISCONNECT POWER AT CIRCUIT BREAKER OR FUSE WHEN SERVICING, INSTALLING OR REMOVING FIXTURE.
• DO NOT control a load in excess of the specified ratings. Damage to the unit, fire, electric shock, personal injury or death can occur.
Check your load ratings to determine suitability for your application.
• If you are unsure about any part of these instructions, consult an electrician.
• To be installed and/or used in accordance with electrical codes and regulations.

TOOLS NEEDED TO INSTALL YOUR SENSOR

Slotted/Phillips Screwdriver Electrical Tape
Pliers Cutters
Small Slotted Screwdriver

FEATURES

• CEC Title 20 and 24 Compliant.
• Manual ON/Auto OFF.
• Leviton's Decora design.
®
• Sensor can be ganged together with other units in a multiple-switch
wall plate.
• Self-Adaptive Technology adjusts to occupancy patterns of use in
auto adapt mode.
• The Adapting Time-out walk-through feature prevents lights from
remaining ON for an extended period after only a momentary
occupancy.
• Switches a single load circuit.
• Adjustable horizontal blinders for both left and right PIR masking.
• True Zero-Cross relay provides maximum contact life and
compatibility with electronic ballasts.
• Dual detection technology, both Passive Infrared and Ultrasonic.
OSSMT-GT can be configured as Ultrasonic Only by disabling
Passive Infrared.
• Devices can operate in Multi-Tech or Passive Infrared Only mode.
• Time Delay: 30 seconds to 30 minutes.
• LED (Red/Green): Visible status indicators for determining sensing
technology operation.
• Vacancy Confirmation: a 30 second grace period is enabled in case
of False OFF.

DESCRIPTION

Leviton's Designer Multi-Technology Wall Switch Vacancy Sensor, Cat.
No. OSSMT-GT/OSSMT-TM, is designed to detect motion using the
Passive Infrared (PIR) and Ultrasonic sensor from sources (such as a
person entering a room) within its field-of-view (monitored space). The
Vacancy Sensor senses motion within its maximum coverage area of
2400 sq. ft (223 m 2 ). The ultrasonic (US) sensors work with the PIR
to keep the lights ON when occupied. The controlled lights will remain
ON until no motion is detected and the scheduled time-delay has
expired, at which point the lights will be turned OFF. In adapting time-
out mode the sensor adapts its time delay settings to the occupancy
patterns of a room.
The OSSMT is designed to control a single lighting control circuit and
provide the energy savings of an vacancy sensor. The OSSMT-GT
does not contain a neutral conductor. It is intended for use in retrofit
applications where a neutral is not available in the wall box.
The OSSMT is a single relay device, which operates in Manual ON/
Auto OFF ONLY.
Cat.No. OSSMT-TM is UL and cUL listed. Cat. No. OSSMT-GT is
ETL listed and cETL listed.
The PIR tecgnology of the Vacancy Sensor uses a small semiconductor
heat detector that resides behind a multi-zone optical lens. This Fresnel
lens establishes dozens of zones of detection. The Sensor is sensitive
to the heat emitted by the human body. In order to initially trigger the
Sensor, the source of heat must move from one zone of detection to
another. The device is most effective in sensing motion across its field-
of-view and it is less effective sensing motion towards or away from its
field-of-view). Keep this in mind when selecting the installation location
(refer to Field-of-View diagrams).
Multi-Technology Designer Wall Switch Vacancy Sensor
Incandescent/Tungsten: 800W @ 120V
Compatible with incandescent lamps, low-voltage lighting with electronic and magnetic transformers, electronic and magnetic fluorescent ballasts, and fans.
The Ultrasonic technology of the Vacancy Sensor uses a non-audible, high
frequency (40kHz) sound to sense Doppler shifts caused by motion in the
space. The US is more sensitive to small motion and does not rely on line of
sight for detection. If both technologies have not detected any motion for the
set timeout period, the relay and its corresponding load will be turned OFF.
Note that PIR technology responds to rapid changes in temperature,
so care should be taken not to mount the device near a climate control
source (i.e. radiators, air exchanges, and air conditioners). Hot or cold
drafts will look like body motion to the device and will trigger it if the
unit is mounted too close. It is recommended to mount the Vacancy
Sensor at least 6 feet away from a climate control source.
In addition, it is also recommended NOT to mount the Vacancy Sensor
directly under a large light source. Large wattage bulbs (greater than
100W incandescent) give off a lot of heat and switching the bulb causes
a temperature change that can be detected by the device. Mount the
Vacancy Sensor at least 6 ft. away from large bulbs. If it is necessary to
mount the device closer, lower the wattage of the bulb directly overhead.

INSTALLING YOUR SENSOR

NOTE: Use check boxes when Steps are completed.
WARNING: TO AVOID FIRE, SHOCK, OR DEATH; TURN
Step 1
OFF POWER at circuit breaker or fuse and test that power is
off before wiring!
OFF ON OFF ON
OFF ON OFF ON
OFF ON OFF ON
OFF ON OFF ON
OFF ON OFF ON
OFF ON OFF ON

Identifying your wiring application

Step 2
(most common):
1 2
2
1
3
3
4
4 5
Single-Pole 3-Way
1. Line (Hot) 1. Line or Load (See important*
2. Neutral
instruction)
NOTE: for OSSMT-TM only. 2. Neutral
3. Ground NOTE: for OSSMT-TM only
4. Load 3. Ground
4. First Traveler – note color
5. Second Traveler – note color
Note: These products are not true 3-way devices.
IMPORTANT: For Multi-location applications, note that one of the screw
terminals from the old switch being removed will usually be a different
color (Black) or labeled Common. Tag that wire with electrical tape and
identify as the common (Line or Load) in both switch wall boxes.
Single Pole (One Location) or Multi-Location
California Title 20 and 24 Compliant
Cat. No. OSSMT-TM & OSSMT-GT
Ballast: 1200VA @ 120V Ballast: 2700VA @ 277V
Operating Temperature Range: 0°C to 40°C
Relative Humidity: 20% to 90% non-condensing
No Minimum Load Required
INSTALLATION INSTRUCTIONS
WARNINGS AND CAUTIONS:
• Do not install this unit to control a receptacle.
• The OSSMT Vacancy Sensor is intended to replace a standard single-pole Decora wall switch.
• Do not touch the surface of the lens. Clean outer surface with a damp cloth only.
• Use this device WITH COPPER OR COPPER CLAD WIRE ONLY.
Preparing and connecting wires:
Step 3
Strip Gage
9/16"
(measure bare
(1.4 cm)
wire here)
Cut
(if necessary)
• Pull off pre-cut insulation from sensor leads.
• Make sure that the ends of the wires from the wall box are straight
(cut if necessary).
• Remove insulation from each wire in the wall box as shown.
Installing your Sensor – Single-Pole Application:
Step 4
NOTE: Cat. No. OSSMT-TM requires a neutral wire. If there is no neutral
wire this device will not work.
NOTE: The Cat. No. OSSMT-GT requires a ground wire to operate
properly. If there is no ground wire, ensure electrical box is grounded and
attach ground wire to box with a screw. If the ground wire is floating this
device will not work.
Wiring Diagram for OSSMT-GT
Blue
Black
Black (Hot) Black
Load
Line
120-277V, 50/60Hz
Green
White
Ground
Neutral (White)
Wiring Diagram for OSSMT-TM
Blue
Black
Black (Hot) Black
White
Load
Line
120-277V, 50/60Hz
Green
White
Ground
Neutral (White)

WIRING SENSOR:

Connect wires per WIRING DIAGRAM as follows: Screw wire connector
on clockwise making sure there are no bare conductors below the wire
connectors. Secure each connector with electrical tape.
• Green or bare copper wire in wall box to Green lead.
• Line Hot wall box wire to Black lead.
• Load wall box wire to Blue lead.
NOTE: Allow 1 minute for warm-up after connecting and energizing.
Motor: 1/4hp @ 120V
Installing your Sensor – Multi-location Wiring
Step 5
Application:
NOTE: The Cat. No. OSSMT-GT requires a ground wire to operate
properly. If there is no ground wire, ensure electrical box is grounded and
attach ground wire to box with a screw. If the ground wire is floating this
device will not work.
OSSMT-GT Multi-Location Wiring Diagram
Sensor 1 Sensor 2
Black (Hot) Black Blue Blue Black
Black
Line
120-277V, 50/60Hz
Load
Green Green
White
Ground Ground
Neutral (White)
OSSMT-TM Multi-Location Wiring Diagram
Sensor 1 Sensor 2
Black (Hot) Black
Blue Blue Black
Black
White White
Line
120-277V, 50/60Hz
Load
Green Green
Ground Ground White
Neutral (White)
NOTE: Sensor 1 must be installed in a wall box that has both a LINE Hot
and a Ground connection. Sensor 2 must be installed in a wall box that
has both a Load and a Ground connection.
If you are unsure about any part of these instructions, consult an
electrician.
NOTE: Either sensor can turn the lights ON. Both sensors must time out
to OFF for the lights to go OFF.

WIRING SENSOR 1:

Connect wires per WIRING DIAGRAM as follows:
• Green or bare copper wire in wall box to Sensor 1 Green lead.
• Line Hot (common) wall box wire identified (tagged) when removing old
switch and First traveler from Sensor 2 to Sensor 1 Black lead.
• Second Traveler wall box wire from Sensor 2 to Sensor 1 Blue lead.
• For OSSMT-TM tie Neutral wires together.

WIRING SENSOR 2:

Connect wires per WIRING DIAGRAM as follows:
• Green or bare copper wire in wall box to Sensor 2 Green lead.
• Load wall box wire identified (tagged) when removing old switch and
Second Traveler from Sensor 1 to Sensor 2 Blue lead.
• First Traveler Line Hot from Sensor 1 to Sensor 2 Black lead.
NOTE: Allow 1 minute for warm-up after connecting and energizing.
DI-N0X-OSSMT-00A
Testing your Sensor prior to completely
Step 6
mounting in wall box:
Wall surface
Mounting
screws
(2 places)
Sensor
NOTE: Dress wires with a bend as shown in diagram to relieve stress
when mounting device.
• Position all wires to provide room in outlet wall box for device.
• Partially secure device using long mounting screws provided.
• Restore power at circuit breaker or fuse.
NOTE: Allow 1 minute for warm-up after energizing.
NOTE: All models of the OSSMT are factory preset to work
without any adjustments. If necessary, adjust the Blinders and PIR
Range Control to stop any unwanted detection of motion (refer to
FEATURES section).
• For additional Time Control Settings (refer to the SETTINGS
section).
NOTE: To avoid PERMANENT DAMAGE to the unit, be careful
NOT TO OVERTURN the control knobs or levers when setting the
Sensor. The controls can be accessed by removing the wallplate
(if applicable) and control panel cover (refer to Control Panel
Diagram). Use a small straight blade screwdriver to adjust knobs
and blinder levers.
NOTE: DO NOT press in on blinder levers or use excessive force
(refer to Control Panel Diagram).
• Attach the Control Panel cover when the desired settings are complete.
If lights do not turn ON, refer to the TROUBLESHOOTING section.
FEATURES
NOTE: To access control settings, remove the control panel cover.
If necessary, remove the warning label that covers the adjustment
dials (refer to Control Panel Diagram).
Factory Settings: The sensor is shipped from the factory to work in
almost all situations, without any added adjustments. The factory settings
are: Blinders open, 10 minutes fixed Time-Out, Medium passive infrared
(PIR) range, and Medium Ultrasonic range. The PIR and ultrasonic
technologies are both active.
Blinders: The blinders are two independent shutters that can narrow the
field-of-view from a maximum of 180° down to 60° of arc. The blinders
are operated by moving the blinder levers towards or away from the
center of the Sensor. The blinder levers can be found above the control
dials in the control panel (refer to Control Panel Diagram).
Time-Outs: The Sensor has three types of Time-Outs: Fixed, Adapting,
and Walkthrough.
• Fixed Time-Out: The value of this Time-Out is user selected
through the use of the Time Control Setting (refer to Control Panel
Diagram and Time-Out Settings).
• Adapting Time-Out: When activated, the value of this Time-Out
(30 minutes) is changed by the Sensor based on room occupancy
and lighting conditions.
• Walk-through Time-Out: The value of this Time-Out is preset to
2.5 minutes and only exists in the Adapting Time-Out mode.