AMX Modero ViewPoint MVP-5200i Operation/Reference Manual page 28

Accessories
Make sure to measure the size of the intended hole before starting to cut it.
2.
Select the knockout to be removed from the top of the box. The box has two knockouts, at the top left and
the top right.
To assist with wiring, and to avoid mechanical stresses on the wire and the
mechanism of the Wall-Mounted Charging Station, the top right knockout is preferred
for use.
3.
Run the power cable through the knockout into the box. Pull out about six inches (15.25cm) of cable into
the box to facilitate installation of the MVP-WCS-52.
4.
Slide the plastic back box into the hole, being careful not to twist or pinch the cable, and set it flush with
the wall (FIG. 11).
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FIG. 11 Installation of plastic back box
5.
Extend the wings on the sides of the box by tightening the screws inside the box.
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Make absolutely certain that the box is in its intended position. Once the box
lockdown wings are extended within the box's hole within the wall, removing the box
will be extremely difficult without damaging the wall in the process.
The maximum recommended torque to screw in the wings on the plastic back box is
105 IN-OZ [74 N-CM]. Applying excessive torque while tightening the wing screws,
such as with powered screwdrivers, can strip out the wings or damage the plastic
back box.
14
Make sure that all of the lockdown wings are folded into their slots before attempting to insert the
box.
For ease of installation, the inside of the box has the direction "UP" labeled for reference.
Note Orientation Designator
Not all of the wings must be extended to lock the box in place, but extending a minimum of the top
and bottom wings is highly recommended.
Apply enough pressure to the screw head to keep the box flush with the wall: this ensures that the
wing will tighten up against the inside of the wall.
All lockdown wings folded flat during installation
MVP-5200i 5.2" Modero® ViewPoint® Touch Panel with Intercom