Daspi ATIZA 1000N Manual De Usuario página 34

ATIZA 1000N
If you are installing the door on the ceiling (D), be sure to drill the
holes 15mm apart.
8- The opener can be installed on the lintel (S) or on the ceiling (D).
9- Measure the front center point of the door (VM) and make a mark on
the door and the lintel or ceiling.
10- Make new marks 74 mm to the right and left of the mark made in the
middle (VM) and at the same height on the ceiling and on the lintel (see
image 8).
Wear safety glasses when drilling! Make sure the walls are wide
enough!