INSTALLATION STEP 1
Determine the Header Bracket Location
WARNING
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.
Installation procedures vary according to garage door types. Follow the instructions which apply to your door.
SECTIONAL DOOR AND1. Close the door and mark the inside vertical |
centerline of the garage door. |
2. Extend the line onto the header wall above |
Finished
Ceiling
Header | 2x4 | Structural |
Wall | ||
|
| Supports |
Vertical
Centerline
of Garage Door
Ceiling
Header Wall
2" (5 cm) Track
Highest Point
the door. |
| You can fasten the header bracket within 4 feet |
| (1.2 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 14) when clearance is minimal. |
| (It may be mounted on the wall upside down if |
| necessary, to gain approximately 1/2" (1 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 13. |
3. Open your door to the highest point of travel as |
shown. Draw an intersecting horizontal line on the |
header wall 2" (5 cm) above the high point. This |
of Travel
Door
height will provide travel clearance for the top edge |
of the door. |
| Header Wall | |
| 2" (5 cm) Track | |
Highest Point | ||
| door with | of Travel | |
Door | ||
| horizontal | ||
| ||
| track |
|
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