LiftMaster ATS2113X 1/2 HP Manuel D'installation page 19

INSTALLATION STEP 11
Install the Door Bracket
A horizontal and vertical reinforcement is needed for
lightweight doors (fi berglass, aluminum, steel, doors with
glass panel, etc.) (not provided). A horizontal reinforcement
brace should be long enough to be secured to two or three
vertical supports. A vertical reinforcement brace should cover
the height of the top panel. Contact the door manufacturer
or installing dealer for operator reinforcement instructions or
reinforcement kit.
1. Center the door bracket on the previously marked vertical
guideline used for the header bracket installation.
2. Position the bracket on the face of the door within the
following limits:
A) The top edge of the bracket 2"-4" (5-10 cm) below the
top edge of the door.
B) The top edge of the bracket directly below any
structural support across the top of the door.
3. Mark and drill 5/16" left and right fastening holes. Secure
the bracket as shown in Figure 1 if there is vertical
reinforcement.
If your installation doesn't require vertical reinforce ment
but does need top and bottom fastening holes for the door
bracket, fasten as shown in Figure 2.
Header
Bracket
Door
Bracket
Location
Vertical
Centerline
of Door
Fiberglass, aluminum or lightweight steel doors WILL
REQUIRE reinforcement BEFORE installation of door
bracket. Contact the door manufacturer or installing
dealer for operator reinforcement instructions or
reinforcement kit. Failure to reinforce the top section
as required according to the door manufacturer may
void the door warranty.
HARDWARE SHOWN
19
ACTUAL SIZE
Self-Tapping Screw
1/4"-14x5/8"
Horizontal and vertical reinforcement is
needed for lightweight doors (fi berglass,
aluminum, steel doors with glass panel,
etc.). (Not Provided)
Vertical
Reinforcement
Vertical
Centerline
of Door
Door
Bracket
Self-Tapping Screw
1/4"-14x5/8"
Inside Edge of Door or
Reinforcement Board
Door
Bracket
Door
Bracket
Plate
Self-Tapping Screw
1/4"-14x5/8"
Figure 1
Figure 2