wattstopper CH-250 User manual

Installation Instructions
Please read all instructions before installing
DESCRIPTION AND OPERATION
CH-250 Multi-Way Wall Switch Vacancy Sensors are designed to replace standard
single pole and multi-way (3-way, 4-way) switches. They are ideal for any room
with multiple entries, and any other indoor space where vacancy sensor-based
control with manual ON/OFF capability are desirable.
Like standard switches, you can press the ON/OFF button to turn the light or fan
(controlled load) ON and OFF. Unlike standard switches, the CH-250 automatically
turns OFF the controlled load after the coverage area has been vacant for a period
of time (Time Delay). If motion is detected within 30 seconds after it automatically
turns OFF, the CH-250 automatically turns the load back ON.
The CH-250 can be wired with up to three additional CH-250s for multi-way
Manual ON/OFF of one or several loads (up to one load connected to each
CH-250). It can also be wired to up to four RH-253 single pole momentary wall
switches for multi-way Manual-ON/OFF Automatic-OFF control of one load.
Lighted Switch
To help you locate the CH-250 in a dark room, the amber LED illuminates the ON/
OFF button while the controlled load is OFF. When the controlled load is ON, the
LED is OFF.
Time Delay
The CH-250 keeps the load ON until no motion is detected by any of the related
CH-250s for the time delay period. The time delay can be selected by the user
during set up. It can be adjusted to any of these fixed values:15 seconds/5
minutes/15 minutes/30 minutes. We recommend that the time delay be the
same in all sensors related to the same load. This makes it easier to understand
the multi-way control operation as well as trouble shooting. For additional
information on how to adjust it, please read the SENSOR ADJUSTMENT section of
this installation manual.
Coverage Area
The CH-250 has a maximum coverage range of 180 degrees and a coverage area
SPECIFICATIONS
Voltage ............................................................................. 120VAC, 60Hz
Load (Multi-Way)
Incandescent or fluorescent........................................... 0-600 Watts
Fan motor ................................................................................ 1/6 hp
Time Delay Adjustment.........................15 sec., 5 min., 15 min., 30 min.
Environment.................................................................... Indoor use only
Operating Temperature .............................. 32° to 131°F (0° to 55°C)
Humidity..................................................... 95% RH, non-condensing
Tools Needed
Insulated Screwdriver
Wire Strippers
Call 800.879.8585 for Technical Support
CH-250
Multi-Way Wall Switch
Vacancy Sensor
Santa Clara, CA 95050

of 600 square feet (56 square meters). The
sensor must have a clear and unobstructed
view of the coverage area. Objects blocking
the sensor’s lens may prevent detection
thereby causing the light to turn OFF even
though someone is in the area.
Windows, glass doors, and
other transparent barriers
will obstruct the sensor’s view and prevent detection.
INSTALLATION & WIRING
These instructions describe only the 3-way circuit applications. For information
about other applications, consult technical support.
WARNING
Disconnect power to the wall switch box by turning OFF
the circuit breaker or removing the fuse for the circuit before
installing the CH-250, replacing lamps, or doing any electrical work.
1. Prepare the switch box.
After the power is turned OFF at the circuit breaker box, remove the existing
wall plate and mounting screws. Pull the old switch out from the wall box.
2. Identify the type of circuit.
You may connect the CH-250 to a single pole or multi-way circuit. If you are
unable to clearly identify some or all of the wires mentioned in this manual,
you should consult with a qualified electrician.
In a 3-way circuit (see Fig. 2), two traveler wires connect to both switches.
Another wire provides power from the circuit box to one of the switches. A wire
connects from one switch to the load. A ground wire may also be connected to
a ground terminal on the old switches. A neutral wire should also be present in
both wall boxes.
NEUTRAL
GROUND
LOAD/Common
(power to lamp)
NEUTRAL
GROUND
HOT/Common
(power from circuit box)
TRAVELER
TRAVELER
Lamp/load
MASTER SWITCH
AUXILIARY SWITCH
Fig. 2: Typical 3-Way Switch Wiring
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25'
(7.6m)
12'
(3.7m)
Fig. 1: Sensor Coverage Area

CAUTION
For your safety: Connecting a proper ground to the sensor
provides protection against electrical shock in the event of certain
fault conditions. If a proper ground is not available, consult with
a qualified electrician before continuing installation.
3. Prepare the Wires.
Tag the wires currently connected to the existing switch
so that they can be identified later. Disconnect the wires.
Make sure the insulation is stripped off of the wires to
expose their copper cores to the length indicated by the
“Strip Gage,” in Fig. 3. (approx. 1/2 inch).
4. Wire the sensor.
Twist the existing wires together with the wire leads on the CH-250 sensor(s)
as indicated in either step 4a or 4b. Cap wires securely using wire nuts.
4a. Wiring two CH-250s in a 3-way configuration
• Connectthegreenornon-insulated(copper)GROUNDwirefromthecircuitto
the green terminal on each CH-250.
• ConnecttheNEUTRALwirefromthecircuitandfromthelamp(LOAD)tothe
white wire on the master CH-250.
The term “master” designates the CH-250 that connects to the load.
• ConnecttheNEUTRALwirefromthecircuitintheotherwiringboxtothe
white wire on the auxiliary CH-250.
• Connectthepowerwirefromthecircuitbox(HOT)totheblackwireonthe
auxiliary CH-250 and to the TRAVELER 1 wire.
• ConnecttheTRAVELER1wirefromtheblackwireoftheauxiliaryCH-250to
the black wire of the master CH-250.
• Connectthelamppower(LOAD)totheredwireonthemasterCH-250.
• CaptheredwireontheauxiliaryCH-250.
• ConnecttheTRAVELER2wirecomingfromtheyellowwireofanotherCH-250
to the yellow wire of the CH-250 that you are wiring.
MASTER CH-250 AUXILIARY CH-250
q
OT
TOP
INDOOR US E ON LY
L
L
Red -> LOAD
(power to lamp
or fan)
White ->
NEUTRAL
GROUND
TERMINAL
Red -> capped
GROUND
TERMINAL
White ->
NEUTRAL
Yellow-> TRAVELER 2
to AUX CH-250
Yellow-> TRAVELER 2
to MASTER CH-250
HOT (power
from circuit box)
Black-> TRAVELER 1
power to
MASTER CH-250
Black-> TRAVELER 1
power from
AUX CH-250
Fig. 4: Step 4a. Sensor orientation, wire connections and wall box assembly
AUXILIARY CH-250
MASTER CH-250
TOP
INDOOR USE ONLY
TOP
INDOOR USE ONLY
Red
Ground
Ye llow
Black
White
Red
Ground
Ye llow
Black
White
Load
Traveler 1
Traveler 2
Neutral
Hot
Neutral
Fig. 5 Step 4a. Reference wiring diagram
Strip Gage
1/2"
12.7 mm
Fig. 3: Wire
Stripping
Call 800.879.8585 for Technical Support

4b. Wiring one CH-250 and one RH-253 single pole momentary
switch for multi-way Manual-ON/OFF single load control.
IMPORTANT: The CH-250 must be installed in the
wiring wall box that connects to the load.
• Connectthegreenornon-insulated(copper)GROUNDwireineachwiringbox
to the green terminal on each CH-250 and RH-253.
• ConnecttheNEUTRALwirefromthecircuitandfromthelamp(LOAD)tothe
white wire on the CH-250.
• Connectthepowerwirefromthecircuitbox(HOT)tooneterminalofthe
RH-253 single pole momentary wall switch and to the TRAVELER 1 wire.
• ConnecttheTRAVELER1wirecomingfromtheRH-253wiringboxtotheblack
wire of the CH-250.
• Connectthelamppower(LOAD)totheredwireontheCH-250.
• ConnecttheTRAVELER2wiretotheothersideoftheRH-253singlepole
momentary wall switch and to the yellow wire of the CH-250.
CH-250
TOP
INDOOR US E ON LY
L
L
Red -> LOAD
(power to lamp
or fan)
GROUND
TERMINAL
GROUND
TERMINAL
White ->
NEUTRAL
Yellow-> TRAVELER 2
to RH-253
TRAVELER 1
to CH-250
Black-> Traveler 1
power via RH-253
RH-253
HOT (power from
circuit box)
TRAVELER 2
to CH-250
Fig. 6: Step 4b. Sensor orientation and wire connections for 3-way operation
with an RH-253 momentary wall switch
To wire up to four RH-253 single pole momentary wall switches to one
CH-250, wire them in parallel as shown in the following wiring diagram.
CH-250
Red
Ground
Yellow
Black
White
Load
Traveler 2
Hot
Neutral
Traveler 1 (Hot)
TOP
INDOOR USE ONLY
RH-253
Ground
RH-253
Ground Ground
Traveler 2
Traveler 1
Traveler 2
Traveler 1
Traveler 2
Traveler 1
Fig. 7: Step 4b. Reference wiring diagram for multi-way operation with RH-253
momentary wall switches (4 maximum)
5. Put all the new switches into their wall boxes.
Position the CH-250 switch(es) with the lens above the ON/OFF button (lens at
top, ON/OFF button at bottom). Use the captive screws on the mounting strap
to secure the switches to their wall boxes.
6. Restore power to the circuit.
Turn on the breaker or replace the fuse.
7. Make any necessary adjustments.
See the SENSOR ADJUSTMENT section for information.
8. Install cover plate.
Install industry standard decorator wall switch cover plate (not included).
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SENSOR ADJUSTMENT
To adjust the CH-250, you use a control
located under the ON/OFF button. The wall
switch cover plate must be removed to gain
access to the time delay adjustment dial
under the ON/OFF button.
For multi-way operation, the Time
Delay should be the same in all
sensors related to the same load.
1. Firmly grasp the side edges of the Lock
Bar and gently pull it away from the
switch face until it clicks. Do NOT attempt
to pull the Lock Bar off of the switch!
2. Firmly grasp the side edges of the ON/
OFF button. Slide the button downward
approximately 1/2 inch to expose the
adjustment dial.
Adjusting the Time Delay
Turn the dial counter-clockwise to reduce
the amount of time the lights will remain ON after the last motion detection
(minimum = 15 seconds). Turn it clockwise to increase the time delay (maximum
= 30 minutes). You can only select the following values: 15 seconds/5 minutes/15
minutes/30 minutes.
Warning: Do not overturn the Time Delay adjustment dial!
TEST MODE
To test the detection coverage:
1. Press and hold the ON/OFF button. After 10 seconds the lighted switch turns
off. The load turns ON if it was not already ON. The sensor is now in a TEST
mode that lasts 5 minutes. (You can end the TEST mode sooner by pressing the
ON/OFF button for another 10 seconds).
During the TEST mode, the controlled load turns ON for 5 seconds each
time the sensor that initiated the TEST mode detects occupancy.
2. Move out of the coverage area or stand very still. The controlled load turns OFF
after 5 seconds if no motion is detected.
3. Move into the coverage area for the unit that initiated the TEST mode. The
controlled load turns ON for 5 seconds each time the sensor detects motion.
After 5 seconds expire without motion detection, the load turns OFF. The
controlled load turns ON automatically with the next motion detection and
stays ON for 5 seconds.
4. Repeat as necessary to ensure that the desired coverage areas are within
detection range.
You can do this test for each CH-250 in your multi-way configuration. So that you
can determine the actual coverage area for each multi-way switch individually,
only the CH-250 that is in TEST mode will control the load.
TOP
INDOOR USE ON LY
Lock Bar
Time Delay
Adjustment
Dial
Slide down
ON/OFF
Buttons
09560r1
Suggested time delays
Bath or Ded room: 30: min.
Half or Stairway: 5-15 min
30
Min.
Sec.
15
Min.
5
Min.
15
Fig. 8: Sensor Adjustment Control
Call 800.879.8585 for Technical Support

TROUBLESHOOTING
Lighted switch is OFF, no load response to ON/OFF button press:
• Makecertainthatthecircuitbreakerisonandfunctioning.
Lighted switch is ON, no load response to ON/OFF button press:
• Checkthelampand/ormotorswitchonthefanmechanism.
Load will not turn OFF automatically:
• PressON/OFFbutton.IfthecontrolledloadturnsOFF,gotonextstep.
• Thetimedelaycanbesetfrom15secondsto30minutes.Checkthetime
delay setting for each CH-250 in your multi-way configuration. Ensure that all
CH-250s have the same time delay setting.
• Ensurethatthereisnomovementwithinthecoverageareaforallthesensors
related to the load for the set time delay. Hot air currents and heat radiant
devices can cause false detection. Make sure the sensor is at least 6 feet (2
meters) away from devices that are a significant heat source (e.g., heater,
heater vent, high wattage light bulb).
If load does not respond properly after following troubleshooting, turn OFF
power to the circuit then check wire connections or call technical support.
WARRANTY INFORMATION
WattStopper warranties its products to be free of defects in materials
and workmanship for a period of five (5) years. There are no obligations
or liabilities on the part of WattStopper for consequential damages
arising out of, or in connection with, the use or performance of this
product or other indirect damages with respect to loss of property,
revenue or profit, or cost of removal, installation or reinstallation.
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2800 De La Cruz Boulevard, Santa Clara, CA 95050
Technical Support: 800.879.8585 • www.wattstopper.com
COVER PLATES
WattStopper CH wall switches fit behind industry standard decorator style switch
cover plates.
2800 De La Cruz Boulevard, Santa Clara, CA 95050
800.879.8585•www.wattstopper.com
09563r3 3/2013
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