LiftMaster 8557 8557 Manual - Page 8

Install the Header Bracket, OPTION A WALL INSTALLATION, OPTION B CEILING INSTALLATION - installation instructions

Get LiftMaster 8557 PDF manuals and user guides View all LiftMaster 8557 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 8 highlights

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 Lag Screw 5/16" - 9 x 1-5/8" 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 lag screws. 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 toward 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 lag screws. Wall Mount (Header Wall) 2x4 Structural Support Header Bracket Optional Mounting Holes Horizontal Line Highest Point of Garage Door Travel Ceiling Mounting Holes Header Bracket 6" (15 cm) Maximum Door Spring (Garage Door) Vertical Centerline of Garage Door Lag Screw 5/16" - 9 x 1-5/8" Door Spring (Garage Door) (Finished Ceiling) Vertical Centerline of Garage Door Lag Screw 5/16" - 9 x 1-5/8" (Header Wall) 8

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
8
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
Lag Screw
5/16" - 9 x 1-5/8"
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 lag screws.
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 toward
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 lag screws.
Wall Mount
Optional
Mounting
Holes
Vertical
Centerline of
Garage Door
(Header Wall)
Header
Bracket
2x4 Structural
Support
Door Spring
(Garage Door)
Highest Point of
Garage Door
Travel
Horizontal
Line
Lag Screw
5/16" - 9 x 1-5/8"
(Header Wall)
Ceiling Mounting Holes
(Finished Ceiling)
Vertical
Centerline of
Garage Door
Header
Bracket
6" (15 cm)
Maximum
Door Spring
(Garage Door)
Lag Screw
5/16" - 9 x 1-5/8"
Installation
2 Install the Header Bracket