Airxcel RV Products 800 Série Instructions D'installation page 5

If the roof of the vehicle is sloped (not level) such
that the air conditioner cannot be mounted within
the maximum allowable degree deviations, an
exterior leveling shim will need to be added to make
the air conditioner level. A typical front to back
leveling shim is shown in Figure 4.
Once the air conditioner has been leveled, some
additional shimming may be required above the
interior ceiling assembly. The air conditioner and
the interior ceiling assembly must have a squared
installation relationship before they are secured
together.
D. After the mounting hole is properly prepared,
remove the carton and shipping pads from around
the air conditioner. Carefully lift the unit to the top
of the vehicle. Do not use the outer plastic shroud
for lifting. Place the air conditioner over the
prepared mounting hole. The pointed end (nose) of
the shroud must face towards the front of the vehicle.
Pull the electrical conduit down from the air
conditioner through the mounting opening and let
hang.
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