Planning; Sectional Door Installation; One-Piece Door Without Track - Chamberlain 2280-976C, 2280C, 2280-267C Owner's Manual

Planning

Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below
apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page
and the accompanying illustrations as you proceed with the installation of your opener.

SECTIONAL DOOR INSTALLATION

Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 19 for details.
Header Wall
Safety Reversing Sensor

ONE-PIECE DOOR WITHOUT TRACK

Header
Wall
Gap between floor and bottom of door
must not exceed 1/4" (6 mm)
Safety
Reversing Sensor
Torsion Spring
Vertical
Centerline
of Door
Safety
Reversing
Sensor
Gap between floor and bottom of door
must not exceed 1/4" (6 mm)
Wall-
mounted
Door
Control
Access
Door
Safety
Reversing Sensor
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 12.
Extension Spring
OR
Access Door
ONE-PIECE DOOR WITH TRACK
Safety
Reversing Sensor
4
Motor Unit
Wall-
mounted
Door
Control
Motor Unit
Access
Door
Safety
Reversing
Gap between floor
Sensor
and bottom of door
must not exceed 1/4" (6 mm).