Viesa HOLIDAY III S Manual De Mantenimiento página 14

Version 3
Checks to be made before assembly
-The inner surround must not obstruct the opening of doors (wardrobe, bathroom,
etc.).
-The electrical equipment must be 12 Volt.
-The roof must be sufficiently strong to hold the weight of the unit fully loaded.
-The water system must be assisted by one or more electric pumps.
The choice of position for the unit is a very important factor in deciding the
correct operation and performance of the product.
IMPORTANT: in those areas not reached by the air flow, performance and
heat perception will be reduced or non-existent.
IMPORTANT: the unit can only operate correctly up to an angle of 15°, front and
back.
The water circuit is configured to operate with the unit installed on a flat or backwards
slanting roof. If the unit is slanted towards the front, turn the evaporator filter 180° and
change the pump connections.
Date 11.09.2020
Fitting the outside and inside units
For 400 x 400 mm openings. (standard)
Use the Viesa template on the top of the box to check the size of the evaporator
and its position.
If necessary, the unit can be facing the back of the vehicle without this influencing
its performance or use.
- Take out all of the original porthole, leaving the roof perfectly clean and free from any
adhesive residues.
- Make sure the opening has framing on all four sizes so that when the seal is
tightened, the roof will not yield, meaning the risk of water leaking or damage.
- For cavities filled with polystyrene, create a support frame, while for cavities in
Styrofoam, there is no need.
The seal is the only part that can prevent water from leaking into the vehicle and
therefore, we recommend taking a good deal of care with its installation, making sure
to:
- Clean the roof surface perfectly.
- Keep the seal firmly in place when fitting by using instant adhesive (Cyanoacrylate
"Instant glue"); never use other adhesives or glues since it will be the seal itself to keep
out the water.
- Never glue the seal under the unit, instead of on the roof.
- Glue the 20X25 mm seal with the 25 mm surface resting on the roof, starting from the
centre at the back and following the perimeter of the opening (if necessary, use the
seal to cover the holes left from the screws in the porthole).
- Cut the seal straight and 15 mm longer, using only the instant glue to stick it in place.
- Place the unit on the seal and centre it over the opening.
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