Install The Header Bracket - LiftMaster 8550C Mode D'emploi

Installation

2 Install the Header Bracket

You can attach the header bracket either to the
wall above the garage door, or to the ceiling.
Follow the instructions which will work best for
your particular requirements. Do not install the
header bracket over drywall. If installing into
masonry, use concrete anchors (not provided).
HARDWARE
H3 (2)
Lag Screw
5/16"-9x1-5/8"
OPTION A
WALL INSTALLATION
2.1A
Center the bracket on the vertical
centerline with the bottom edge of the
bracket on the horizontal line as shown
(with the arrow pointing toward the
ceiling).
2.2A
Mark the vertical set of bracket holes (do
not use the holes designated for ceiling
mount). Drill 3/16" pilot holes and fasten
the bracket securely to a structural
support with the hardware provided (H3).
OPTION B
CEILING INSTALLATION
2.1B
Extend the vertical centerline onto the
ceiling as shown.
2.2B
Center the bracket on the vertical mark,
no more than 6" (15 cm) from the wall.
Make sure the arrow is pointing away
from the wall. The bracket can be
mounted flush against the ceiling when
clearance is minimal.
2.3B
Mark the side holes. Drill 3/16" pilot holes
and fasten bracket securely to a structural
support with the hardware provided (H3).
The nail hole is for positioning
o n . y l Y o u m u t s s u l e g a
o t m o u n t t e h e h d a r e r b
Wall Mount
2x4 Structural
Support
CEILING MOUNT ONLY
UP
Horizontal
Line
Highest Point of
Garage Door
Travel
Optional
Mounting
Holes
Ceiling Mounting Holes
6" (15 cm)
Maximum
Door Spring
CEILING MOUNT ONLY
UP
The nail hole is for positioning
o l n . y Y o u m u t s u e s a l g c s e r w s
o t m o u t n h t e h a e d r e r b c a e k . t
8
(Header Wall)
c s e r w s
c a e k . t
Header
Bracket
(Garage Door)
Header
(Finished Ceiling)
Bracket
(Garage Door)
Vertical
Centerline of
Garage Door
H3
Door Spring
Vertical
Centerline of
Garage Door
H3
(Header Wall)