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340804_RevB_RT12_IS_Eng.qxd:340804_RevB_RT12 IS
DESCRIPTION AND OPERATION
The RT12 is a time switch that turns OFF the connected light or fan (load) when
the selected time expires. While the switch is OFF the pilot light behind the
ON/OFF button illuminates and "OFF" appears in the display. When the switch
is ON, the display shows the amount of time the load will remain ON.
For times up to 59 minutes and 59 seconds, the display shows a blinking colon
between the minutes and seconds while the seconds count down continuously.
For times between 1 hour and 12 hours, the display shows a blinking colon
between the hours and minutes and the minutes portion of the display changes
only once a minute. See Fig. 1 for examples.
The RT12's lighted alpha-numeric display is also used for programming
functions. With the programming functions, you can decide:
• Delay – the amount of time the switch remains ON with the initial press of
the ON/OFF button
• Sound – whether the switch beeps for each button press and every
5 seconds beginning one minute before it turns OFF
• Flash – if the lights flash to warn
Fig. 1: Timer Countdown
you that they are going to turn OFF
The time-out period can be set for 5 minutes
in one minute
to 12 hours. The time is displayed in two
different ways. For a countdown of less than
Manual ON
an hour, the display shows minutes:seconds.
The seconds count down continuously. If the
When you press the ON/OFF button, it
countdown is more than an hour, the display
activates the Delay timer. If you want to
shows hours:minutes, the colon flashes every
keep the switch ON for a time different
second and the display changes every minute.
from what is programmed, simply press
Seconds
Minute
and hold the ON/OFF button until the
Countdown
Elapsed
display shows the desired time. When you
let go of the button the switch turns ON.
:01
Manual OFF
While the switch is ON and the timer is
:02
running, press the ON/OFF button to turn
OFF the connected load without delay.
:03
Changing the amount of time
At any time, you can press and hold the
ON/OFF button for 1 second to restart the timer. It goes immediately to the
programmed Delay time; if you need a different amount of time, keep holding the
button for at least 2 seconds. Hold the button until the display shows the desired
time. Releasing the button starts the timer countdown.
Call 800.223.4185 for Technical Support
9/6/07
10:57 AM
Page 5
INSTALLATION & WIRING
WARNING
Disconnect power to the wall switch box by turning OFF the circuit
breaker or removing the fuse for the circuit before installing the
RT12, 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.
In a Single Pole Circuit (see Fig. 2), two single
wires connect to two screws on the existing
switch. A ground wire may also be present
and connected to a ground terminal on the old
switch. A neutral wire should also be present
in the wall box.
CAUTION
For your safety: Connecting a proper ground to the time switch provides
protection against electrical shock in the event of certain fault conditions.
Hour
If a proper ground is not available, consult with a qualified
Countdown
electrician before continuing installation.
Only connect the RT12 to a Single Pole Circuit. The RT12 is not suitable for
3-way switching. If the existing wiring does not match the description for a
Single Pole Circuit, you should consult with a qualified electrician.
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 the wires to expose
their copper cores to the length indicated by
the "Strip Gage" in Fig. 3 (approximately 1/2 inch).
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4. Wire the time
switch.
Twist the existing
wires together with
the wire leads on
the time switch
as indicated in the
drawing. Cap them
securely using the
wire nuts provided.
See Fig 4.
• Connect the green
or non-insulated
(copper) GROUND
wire from the circuit
to the GROUND
terminal on the
RT12.
• Connect the power
wire from the circuit
Fig 2: Typical Single Pole
(HOT) to the black
Switch Wiring
wire on the RT12.
Fig 4: Switch orientation, wire connections
• Connect the wire
to the lamp or fan
(LOAD) to the red
wire on the RT12.
• Connect the NEUTRAL wires from the circuit to the white wire on the RT12.
5. Put the RT12 in the wall box with the display positioned above the
ON/OFF button.
Secure it to the wall box with the screws provided.
6. Restore power to the circuit.
Turn ON the breaker or replace the fuse.
7. Make any necessary programming changes.
See the Programming section for information.
Fig 3: Wire
Stripping
8. Attach the new cover plate.
Call 800.223.4185 for Technical Support
PROGRAMMING
To program the time switch, you must access the programming buttons that are
located under the ON/OFF button. The wall switch cover plate must be removed
to gain access to the programming buttons.
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. Push the ON/OFF button downward so that
it slides down approximately 1/2 inch to
expose the multi-function programming
buttons. The buttons are labeled from right
to left:
Menu/Raise : provides access to the
program items and shows their current
settings. With the first press it shows
Delay time, second shows Sound
setting, third shows Flash setting.
After an item is Selected, the Raise button
Off to On. For the Delay setting, when you reach 1200 (12 hours),
can increase the setting or change it from
pressing Raise brings the display around to 5:00 (5 minutes).
and wall box assembly
Select/Save: press this while a program item is displaying to change the
setting for the item. When the correct setting is in the display, press this
again to Save the setting for that item.
Lower: After an item is Selected, the Lower button can reduce the setting
or change it from On to Off. For the Delay setting, when you reach 5:00
(5 minutes), pressing Lower brings the display to 1200 (12 hours).
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