Lp Gas Connection - Dometic RM 4203 Gebrauchs- Und Einbauanweisung

For best performance also at high ambient temperatures
there must be a free air circulation over the cooling unit at
the rear of the refrigerator.
The refrigerator is designed for a free-standing installation
and the clearance to side walls etc., should be at least
5 cm (2'').
If the refrigerator is to be built-in, openings with sufficient
area must be foreseen for the access and exit of air for the
cooling unit, as shown in fig. 2. The letters in the figure refer
to:
F Access for cooling air
G Exit for air (upwards)
H Exit forwards (alternative)
Installation in a caravan or motorhome
The refrigerator must be installed in a recess (fig. 2) with
the dimensions given in TECHNICAL DATA.
The refrigerating unit is ventilated via two openings in the
wall of the caravan. The opening must be fitted with suitable
grilles, to give a free cross-section of at least 250 cm
Grilles specially developed for this application can be obtai-
ned from DOMETIC (model A 1620).
Four fasteners are fitted in the plastic bushings in the side
walls of the fridge, fig. 4. They are used for securing the
refrigerator in the enclosure.
The side walls of the enclosure and/ or any wooden braces
installed to fix the refrigerator must be dimensioned to seat
the screws securely, also considering the forces due to the
movement of the vehicle.
With the refrigerator in place, drive the screws through the
bushings in the lining of the refrigerator into the walls of the
enclosure. There must not be more than 3mm of clearance
between refrigerator and enclosure on each side. If neces-
sary, wooden strips or similar should be fitted.
Note: This is the only approved means of securing the
refrigerator to the enclosure and to the vehicle. Fasteners
penetrating other parts of the insulation (PU) foam of the
refrigerator might damage components like electric wiring
etc.
Flue gas must be exhausted through a flue extension, to be
ordered separately or purchased through our service organi-
sation,
The distance between the flue tube and combustible
material must not be less than 20 mm at any point. The
space around the tube where it passes through the caravan
wall should be packed with glass wool protected with
suitable metal plates. Install the flue extension as shown in
fig. 5.
The upper DOMETIC grille has an integrated flue
outlet, fig. 7. In this case the traditional flue outlet, is not
needed which simplifies the installation.
If there is no outer grille at floor level where leaking gas can
escape, a 40 mm hole should be made in the floor of the
recess to drain the gas. The hole should be fitted with wire
mesh and an angled plate to protect it from stones, mud
etc.

LP GAS CONNECTION

The refrigerator is designed for operation on liquified petro-
leum gas (LPG), the pressure of which must be:
for Butane type LPG 28 mbar
for Propane type LPG 37 mbar
Check that this is stated on the data plate.
The refrigerator is not designed for operation on town gas or
natural gas.
CHECK THAT THE GAS SUPPLIED TO THE
REFRIGERATOR IS AT THE CORRECT PRESSURE.
CHECK THE REDUCING VALVE ON THE LP GAS
The gas equipment is shown in fig. 6. In the burner (P) is a
thermocouple (O), which generates an electric current
throught the flame failure device (N), keeping it open as
long as the flame burns. The valve (M) opens/closes the
gas mechanically. It also has a ``MIN'' position for cold
weather. The piezo igniter (L) is connected to the spark plug
(Q). The gas connecting tube (K) has a nipple (J) with left
hand thread R 1/4.
2
.
... in open air applications
For this application a hose connection to the LPG-bottle is
used. Only use rubber hose with crimped on connectors
approved for LPG.
A pressure regulator (as described above) is assembled to
the LPG-bottle. Check that the rubber gasket in the shut off
valve of the bottle is clean and undamaged, as also the
sealing surface in the pressure regulator. The nut should
only be thightened by hand - otherwise the gasket might be
damaged.
The connection is made as follows (figs. 6/9):
Put the refrigerator on its side
Connect hose to nipple (J) and thigten by hand. (Note:
left hand thread!).
Thigten carefully with a wrench, thereby holding the
nipple (J) with second wrench.
In the same way, connect other end of hose to pressure
regulator on LPG bottle.
Open shut off valve of bottle, putting the hose under
pressure.
Check for leaks at the connections, using water with
detergent, watching for bubbles. If leaking: carefully
thigten with two wrenches as explained above until
formation of bubbles stops.
In similar way check also thigtness between nipple (J)
and tube (K) and thighten if necessary.
Also check connection between pressure regulator and
LPG bottle. If leaking, clean sealing surfaces and inspect
for damage. If found defective: exchange (return LPG
bottle), but do not use any foreign sealing compound.
CAUTION: If there are still leaks, call in a service
... indoors
The gas installation should only be carried out by an
authorisid gas fitter.
11
CAUTION !
technician.