9
INSTALLATION STEP 2
Install the Header Bracket
NOTE: Refer to vertical centre and horizontal lines
created in Step 1 for proper placement of header
bracket.
Wall mount: Centre the header bracket on the vertical
centre line with the bottom edge of the header bracket on
the horizontal line (with the arrow pointing toward the
ceiling). Mark all of the header bracket holes. Then drill
4.5 mm pilot holes and fasten the header bracket with
coach bolts.
Ceiling mount: Extend vertical centre line onto the
ceiling. Centre the header bracket on the vertical mark no
more than 150 mm (6") from the wall. Make sure the arrow
is pointing toward the opener. Mark all of the header
bracket holes, then drill 4.5 mm pilot holes and fasten the
header bracket with coach bolts. For concrete ceiling
mount, use concrete anchors provided.
Coach Bolt
HARDWARE
50mm
Ceiling Mount
Wall Mount
150mm
(6")
Centre Line
Coach Bolt
Header Bracket
Horizontal Line
200mm
50 to 200mm
(depending on
door type)
Header Bracket
Centre Line
Coach Bolt
(C Doors)
(A & B Doors)
(A , B & C Doors)
Summary of Contents for MT3850EVO
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