Install The Door Control - Chamberlain 1255GMR – 1/2HP Owner's Manual

INSTALLATION STEP 6

Install the Door Control

Locate door control within sight of the door at a
minimum height of 5 feet where small children
cannot reach, and away from moving parts of the
door and door hardware. If installing into drywall drill
5/32" holes and use the anchors provided.
1. Strip 1/4" of insulation from one end of bell wire
and connect to the two screw terminals on back of
door control by color: white wire to 2 and white/red
wire to 1.
2. Run bell wire up wall and across ceiling to motor
unit. Use insulated staples to secure wire in
several places. Do not pierce wire with a staple,
creating a short or open circuit.
3. Connect bell wire to the opener terminal screws as
follows: white to 2 and white/red to 1.
4. Use tacks or staples to permanently attach
entrapment warning label to wall near door control,
and manual release/safety reverse test label in a
prominent location on inside of garage door.
NOTE: DO NOT connect the power and operate the
opener at this time. The trolley will travel to the full
open position but will not return to the close position
until the sensor beam is connected and properly
aligned. See Safety Reversing Sensor Instructions
beginning on page 17.
2-Conductor
Bell Wire
Door Control
Button
14
WARNING
To prevent possible serious injury or death from
electrocution:
• Be sure power is not connected before installing door
control.
• Connect only to 24 VOLT low voltage wires.
To prevent possible serious injury or death from a closing
garage door:
• Install door control within sight of garage door, out of
reach of children at a minimum height of 5 feet, and
away from all moving parts of door.
• Never permit children to operate or play with door
control push buttons or remote control transmitters.
• Activate door only when it can be seen clearly, is
properly adjusted, and there are no obstructions to door
travel.
• Always keep garage door in sight until completely
closed. Never permit anyone to cross path of closing
garage door.
HARDWARE SHOWN ACTUAL SIZE
6ABx1-1/2" Screw
Lighted Door Control Button
Back Panel
of Opener
Insulated
Staples
Dry Wall Anchors
2-Conductor
Bell Wire
Door
Control
Terminal
Screws
Opener
Terminal
Screws
1 2 3
9 1 9 1
7 3 7 3
5 5
KG
KG
Antenna