Outside Vents - Thetford N80 – N10F01-1P Serie Manual De Instrucciones

4 VENTILATION
Perfect ventilation is very important to ensure the cooling system works properly. Heat is
generated in the cooling system. The heat must be able to escape into the open air. Cold air
extraction is necessary to allow the cooling system to cool down again and to maintain the
circulation of air.
FIGURE 5: The refrigerator is ventilated by means of two openings in the wall of the caravan or
5.
motor home across which ventilation gratings are placed. Cold air comes in through the lower
grating. The cooling system heats the cold air and it takes out again through the upper grating
(chimney effect).
4.1 Installation ventilation gratings
- Install the ventilation gratings exactly as described in this manual.
Any other method of installation will invalidate the manufacturer's warranty for the
refrigerator.
- Always fit the ventilation gratings at the rear of the refrigerator.
Fitting them at the side will reduce the refrigerator's cooling capacity.
6.
FIGURE 6: The lower ventilation grating
The lower ventilation grating should preferably be positioned behind the burner
box and the power board. This grating is also used for access during periodical Maintenance
and repairs to the refrigerator.
At the bottom of the combustion area there must be a hole in the floor. If a gasleak occurs this
hole will allow gas (which is heavier than air) to stream outside instead of building up on the
floor. For this purpose there should be a hole in the floor which leads directly outside, with a
diameter in conformity with local regulations, but we advice a diameter of at least Ø40 mm.
If it is not possible to make a hole in the bottom, it is possible to make a proper installation by
positioning the bottom of the lower ventilation grating lower than the burner box. In this way the
gas has the possibility to escape through the grating before reaching the burner flame.
However might mean that the refrigerator will have to be removed from the vehicle in case of
maintenance or repair of the burner box or powerboard.
7.
FIGURE 7: The upper ventilation grating
The installation of the upper ventilation grating influences the cooling capacity. The best result is
achieved when this grating is installed as far above the condenser as possible. For Thetford small
vents use at least 110 mm distance between the top of the refrigeration cabinet and the top of the
ventilation cut-out. Situation [1] is the preferred installation procedure for small vents and creates
there the optimal cooling capacity. Situation [3] is the preferred installation procedure for large
vents and creates there the optimal cooling capacity. Situation [2] is without a ventilation grating at
the topside of the fridge, but with a chimney on the roof, which is also a possibility.
4.2 Installation ventilation gratings
FIGURE 8: A ventilation system compromises of two sets of a vent frame [A], a vent screen [B],
8.
and a vent outer [C]. The large vents do not have a vent screen [B]. To install the ventilation
gratings, make, using the templates provided, a horizontal rectangular recess in the wall of the
caravan or motor home..
1. Use the accompanying template to cut out the ventilation recess.
2. Seal the vent frame [A] in a watertight way by means of sealant or butyl tape.
3. Only for the upper ventilation grating a small vents: assembly the vent cap [E] together with the
vent frame.
4. Position the vent frame [A] in place.
5. Place the vent screen [B] in the vent frame (only for small vents).
6. Place the vent outer [C] over the vent frame[A] and fasten it with the two retaining slides.
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