Chamberlain 80ad, 1160, 1150 Installation Step, Determine the Header Bracket Location, Proceed to

INSTALLATION STEP 1

Determine the Header Bracket Location

Installation procedures vary according to garage door types. Follow the instructions which apply to your door.

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 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.

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.

			Finished
	Vertical		Ceiling
		40mm
	Centreline
		Reinforcement
Header
		Board	Structural
Wall
			Supports

Vertical

Centreline

Ceiling
Header Wall
50mm	Track
Highest Point	Sectional door
of Travel
	with curved
	track
Door
	Header Wall	Track
	50mm

		Highest Point
One-piece	Door	of Travel
door with
horizontal
track

114A2845 12