Installation Section: Pages; Determine Header Bracket Location; Sectional Door - Chamberlain Series 1200 Owner's Manual

Installation Step 1

Determine Header Bracket Location

Installation procedures vary according to garage
Header
door types. Follow the instructions which apply to
Wall
your door.
SECTIONAL Doors and
ONE-PIECE Door With Track
Header
Wall
• Open your door to the highest
point of travel as shown. Draw
an intersecting horizontal line
on the header wall 2" above
the high point. This height will
provide travel clearance for the
top edge of the door.
Door
Proceed to Step 2, page 14.
Door
SECTIONAL DOOR AND
Installation Section: Pages 12 – 27
ONE-PIECE DOOR WITH TRACK
Vertical
Header
Guideline
Wall
SECTIONAL DOOR AND
ONE-PIECE DOOR WITH TRACK
Vertical
Vertical
Guideline
Guideline
2x4
Vertical
Guideline
Ceiling
Header
Wall
2"
Highest Point
of Travel
Door
Ceiling
Header
Wall
Track
2"
Highest Point
of Travel
Sectional door with
SECTIONAL DOOR AND
ONE-PIECE DOOR WITH TRACK
Finished
Vertical
If the header bracket is not rigidly fastened to
Ceiling
Guideline
a structural support on the header wall or
ceiling, the safety reverse system may not
2x4
2x4
Structural
work properly (see page 30). The door might
Supports
not reverse when required, and could cause
serious injury or death.
The garage door springs, cables, pulleys,
brackets and their hardware are under extreme
tension. Do not attempt to loosen, move or
adjust them yourself. Serious personal injury
or death could result. Call for professional
Finished
Vertical
garage door service.
Ceiling
Guideline
Structural
Supports
Ceiling
Header
Wall
Track
2"
Track
Highest Point
of Travel
curved track
12
WARNING
Finished
Ceiling
Structural
Supports
CAUTION
• Close the door and mark the inside
vertical centerline of the garage door.
• Extend the line onto the header wall
above the door.
Remember, you can fasten the
header bracket within 2 feet to 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 (refer to page 14)
when clearance is minimal. (It may
be mounted on the wall upside down
if necessary, to gain approximately
1/2".)
If you need to install the header bracket
on a 2x4 (on wall or ceiling), use lag
screws (not supplied) to securely fasten
the 2x4 to structural supports as shown
here and on page 13.
Door
Header
Wall
2"
Highest Point
One-piece door with
horizontal track
Door
Header
Wall
Track
2"
Highest Point
of Travel
Door
Track
of Travel