Airxcel Coleman-Mach 48000 Serie Consignes D'entretien page 3

enlarged. If the opening exceeds 15" x 15", a
mounting frame must be field fabricated to reduce
the opening size (See Figure 1).
B. If a roof vent opening is not used, a new opening
(See Figure 1) will have to be cut into the vehicle
roof. A matching opening will also have to be cut into
the interior vehicle ceiling. If the ceiling opening is
carpeted, snagging could occur. After the opening in
the roof and interior ceiling are the correct size, a
framed support structure must be provided between
the exterior roof top and the interior ceiling. The
reinforced frame structure must
following:
1. Capable of supporting both the weight of the
roof top air conditioner and the interior ceiling
assembly.
2. Capable of holding or supporting the roof outer
surface and interior ceiling apart, so that when
the roof top air conditioner and ceiling assembly
are bolted together, no collapsing occurs.
Airxcel, Inc. requires that the spacing from the vehicle
roof top to the interior ceiling be no less than 1". A
typical support frame is shown in Figure 1.
The frame must provide an opening through the frame
to allow passage for the power supply wiring. Route the
supply wiring through the frame at the same time the
support frame is being installed.
IMPORTANT – Allow 24" of supply wiring through
the support frame (working length).
After the support frame is installed, seal off all gaps
between the frame and both the roof exterior and the
interior ceiling of the vehicle (cavity walls). Additionally,
seal the gap around the electrical supply wiring.
C. The roof top air conditioner must be mounted as
near level front to rear and side to side as possible
when the vehicle is parked level. Figure 3 shows the
maximum allowable degree deviations mounting
degrees from total surface flat plane).
NOTE: For installation angles outside of stated
allowable, please contact RV Products.
If the roof of the vehicle is sloped 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 roof top air
conditioner level. A typical leveling shim is shown in
Figure 2.
Once the air conditioner has been leveled, some
additional shimming may be required above the
interior ceiling assembly.
NOTE: The air conditioner and 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 the roof top air
conditioner. Carefully lift the unit to the top of the
vehicle. Do not use the outer plastic shroud for
lifting. Place the roof top 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 roof
air conditioner, through the mounting opening and
let hang.
provide the E. Securing the roof top unit to the roof:
A mounting frame is supplied with the ceiling
assembly. Follow the steps below to secure the air
conditioner to the roof. Refer to Figure 4.
1. On the Roof - Position the air conditioner with the
2. In the Coach - Install the ceiling assembly mount
3. Proper tension has been achieved for each bolt
Figure 3
3
basepan gasket over the 14" to 15" square
opening in the roof.
frame using the four bolts found with the ceiling
assembly.
when any portion of each gasket indicating tab
has been pulled down even with the roof (See
Figure 4). The upper unit has now been properly
installed with optimum gasket compression.
Figure 2
Figure 1