Chamberlain ATS 2113X - Manual (Page 8)

8
INSTALLATION STEP 1
Determine the Header Bracket Location
Close the door and mark the inside vertical centerline of the 1.
garage door.
Extend the line onto the header wall above the door. 2.
You can fasten the header bracket within 4 feet (1.22 m) of
the left or right of the door center only if a torsion spring
or center bearing plate is in the way; or you can attach it to
the ceiling (see page 9) when clearance is minimal. (It may
be mounted on the wall upside down if necessary, to gain
approximately 1/2" (1.27 cm).)
If you need to install the header bracket on a 2x4 (on wall or
ceiling), use lag screws (not provided) to securely fasten the
2x4 to structural supports as shown here and on page 9.
Open your door to the highest point of travel as shown. Draw 3.
an inter secting horizontal line on the header wall 2" (5 cm)
above the high point. This height will provide travel clearance
for the top edge of the door.
Proceed to Step 2, page 9.
Header Wall
Ceiling
Track
Highest Point
of Travel
Door
2" (5 cm)
Unfinished
Ceiling
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Header Wall
2x4
Structural
Supports
Vertical Centerline
of Garage Door
Level
(optional)
2x4
To prevent possible SERIOUS INJURY or DEATH:
Header bracket • MUST be RIGIDLY fastened to structural
support on header wall or ceiling, otherwise garage door
might not reverse when required. DO NOT install header
bracket over drywall.
Concrete anchors
• MUST be used if mounting header bracket
or 2x4 into masonry.
NEVER
• try to loosen, move or adjust garage door, springs,
cables, pulleys, brackets, or their hardware, ALL of which are
under EXTREME tension.
ALWAYS
• call a trained door systems technician if garage
door binds, sticks, or is out of balance. An unbalanced
garage door might not reverse when required.
SECTIONAL DOOR WITH CURVED TRACK