Sony VPL-EW225 Operating Instructions Manual page 65

Ceiling Installation
Caution
Never mount the projector on the ceiling or move it by yourself.
Be sure to consult with qualified Sony personnel (charged).
Height H from
center of lens to
edge of screen
A
Projected
image
* The number will be minus when the top of the projected image is higher than A.
Center of lens
Projection distance L
Top side
Projection Distance
65