Dometic 3241.301 Instrucciones De Instalación Y Funcionamiento página 26

b. The roof must be designed to support 65
Kg. when the Caravan is in motion. Normally
a 100 Kg. static load design will meet this
requirement.
It is the responsibility of the installer of this
system to ensure structural integrity of the
Caravan roof. Never create a low spot on the
roof where water will collect. Water standing
around the unit may leak into the interior
causing damage to the product and the Cara-
van.
c. Check inside the Caravan for air distribution
box obstructions (i.e. door openings, room
dividers, curtains, ceiling fi xtures, etc.). See
FIG. 3.
FIG. 3
635 mm
508 mm
Dimensions Are Nominal
125 mm
130 mm
Dimensions Are Nominal
70 mm
(overall
depth)
76 mm
Front
233 mm
152 mm
139 mm
75 mm
76 mm
362 mm x 362 mm
(± 3 mm) Opening
C. Roof Preparation
1. Opening requirements - Before preparing the ceil-
ing opening, read all of the following instructions
before beginning the installation.
If an existing roof vent opening will not be used
a 362 mm x 362 mm (± 3 mm) opening must be
cut through the roof and ceiling of the Caravan.
This opening must be located between the roof
reinforcing members.
There may be electrical wiring between the
roof and the ceiling. Disconnect 220 - 240
VAC power cord and the positive (+) 12 VDC
terminal at the supply battery. Failure to follow
this instruction may create a shock hazard
causing death or severe personal injury.
The 362 mm x 362 mm (± 3 mm) opening is part
of the return air system of the unit and must be
fi nished in accordance with all applicable national
and local codes and/or regulations.
2. Roof vent removal
a. Unscrew and remove the roof vent.
b. Remove all caulking compound around open-
ing.
c. Seal all screw holes and seams where the roof
gasket will be located. Use a good grade of all
weather sealant. See FIG. 4
FIG. 4
d. If the opening exceeds 365 mm x 365 mm, it
will be necessary to re-size the opening to 362
mm x 362 mm (± 3 mm).
e. If the opening is less than 359 mm x 359 mm,
it must be enlarged to 362 mm x 362 mm (± 3
mm).
3. New opening - (Installation other than vent open-
ing)
a. Mark a 362 mm x 362 mm (± 3 mm) square
on the roof and carefully cut the opening.
b. Using the roof opening as a guide, cut the
matching hole in the ceiling.
c. The opening created must be framed to provide
adequate support and prevent air from being
drawn from the roof cavity. Framing stock 19
mm or more in thickness must be used. Re-
member to provide an entrance hole for power
supplies at the front of the opening. See FIG.
5.
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