Chamberlain 1245R garage door opener

User Manual - Page 14

For 1245R.

PDF File Manual, 40 pages, Download pdf file

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INSTALLATION STEP 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).
WALL HEADER BRACKET INSTALLATION
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).
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 the hardware provided.
HARDWARE SHOWN ACTUAL SIZE
IIIIIIIIII
Lag Screw
5/16"-9 x 1-5/8"
Wall Mounting Holes
Optional
Wall Mounting Holes
Header
- Wall--_J"
2t4uctural_ BH_t_
Support I _\i_ ..... t"
Horizontal _t _I_
Line _" --,,_,,,-_ x,,_),_
Highest Point of
Garage Door Travel
1"1
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracke
/ _"_ Vertical
/ __ Centerline
I/ _ } of Garage Door
I, agScrews
_'_ii__ _< I 5/16"-9xl-5/8"
X__Spring
CEILING HEADER BRACKET INSTALLATION
Extend the vertical centerline onto the ceiling as
shown.
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.
Mark the side holes. Drill 3/16" pilot holes and
fasten bracket securely to a structural support with
the hardware provided.
Ceiling Mounting Holes
Door
/"" -- Finished Ceiling --
'' t __ ._ _ Vertical
__ _ -_" _Header Centerline
" Bracket Door
6"(15
Maximum
Lag Screws
5/16"-9xl -5/8"
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
Header Wall
14
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