B&D N1134 - Manual (Page 12)

12
INSTALLATION STEP 1
Determine the Header Bracket
Location
Installation procedures vary according to garage door
types. Follow the instructions which apply to your
door.
SECTIONAL DOOR
AND ONE-PIECE DOOR WITH TRACK
1. Close the door and mark the inside vertical
centreline of the garage door.
2. Extend the line onto the header wall above the
door.
NOTE: You can fasten the header bracket within
300mm of the left or right of the door center
only if a
torsion spring or centre bearing plate is in the way; or
you can attach it to the ceiling (see page 14) when
clearance is minimal. (It may be mounted on the wall
upside down if necessary, to gain approximately
12mm.)
If you need to install the header bracket on a 40mm
reinforcement board (on wall or ceiling), use lag
screws (not provided) to securely fasten the 40mm
reinforcement board to structural supports as shown
here and on page 13. If installing into masonry, use
concrete anchors.
3. Open your door to the highest point of travel as
shown. Draw an intersecting horizontal line on the
header wall 50mm above the high point. This
height will provide travel clearance for the top edge
of the door.
Proceed to Step 2, page 14.
One-piece
door with
horizontal
track
Header Wall
Ceiling
Sectional door with curved track One-piece door with horizontal track
Track
Highest Point
of Travel
Door
Door
Track
50mm Header Wall
Highest Point
of Travel
50mm
Sectional door
with curved
track
Header Wall
Ceiling
Sectional door with curved track One-piece door with horizontal track
Track
Highest Point
of Travel
Door
Door
Track
SECTIONAL DOOR AND
ONE-PIECE DOOR WITH TRACK
50mm Header Wall
Highest Point
of Travel
50mm
Vertical
Centreline
Finished
Ceiling
Vertical
Centreline
Header
Wall
40mm
Reinforcement
Board
Structural
Supports
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 40mm reinforcement board 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.
W WARN ARNING ING
CAUTION CAUTION W WARN ARNING ING
W WARN ARNING ING
114A2845