LiftMaster 1220EM FS2 Manual Del Usuario página 17

ONE-PIECE DOOR WITHOUT TRACK
1. Close the door and mark the inside vertical
centerline of your garage door. Extend the line
onto the header wall above door, as shown.
If headroom clearance is minimal, you can install
the header bracket on the ceiling. See page 18.
If you need to install the header bracket on a
38 mm board (on wall or ceiling), use lag screws
(not provided) to securely fasten the 38 mm board
to structural supports as shown.
2. Open your door to the highest point of travel as
shown. Measure the distance from the top of the
door to the floor. Subtract the actual height of the
door. Add 20 cm to the remainder. (See Example).
3. Close the door and draw an intersecting horizontal
line on the header wall at the determined height.
NOTE: If the total number of centimeters exceeds
the height available in your garage, use the
maximum height possible, or refer to page 18 for
ceiling installation.
EXAMPLE
Distance from top of door
(at highest point of travel) to floor ......... 234 cm
Actual height of door ............................ -224 cm
Remainder ............................................... 10 cm
Add ........................................................ +20 cm
Bracket height on header wall ............... =30 cm
(Measure UP from top of CLOSED door.)
Proceed to Step 2, page 18.
Vertical
Header Wall
Centerline
Door
Jamb
Hardware
One-piece door without track:
jamb hardware
One-piece door without track:
pivot hardware
17
Unfinished
Ceiling
Structural
Supports
38 mm
Board
38 mm Board
CEILING MOUNT
HEADER BRACKET
Vertical
Centerline
of Garage
Door
Header Wall
Highest Point
of Travel
Floor
Highest Point
of Travel
Header Wall
Door
Pivot
OPTIONAL
FOR
Floor