DOMETIC RUA5208X Absorption Refrigerator Instruction Manual
- June 17, 2024
- Dometic
Table of Contents
DOMETIC RUA5208X Absorption Refrigerator Instruction Manual
Please read this instruction manual carefully before installation and first use, and store it in a safe place. If you pass on the product to another person, hand over this instruction manual along with it.
NOTE You can find details on the operation in the operation manual.
1 Explanation of symbols
2 Safety instructions
The manufacturer accepts no liability for damage in the following cases:
- Faulty assembly or connection
- Damage to the product resulting from mechanical influences and incorrect connection voltage
- Alterations to the product without express permission from the manufacturer
- Use for purposes other than those described in the operating manual
⚠ WARNING!
- Never open the absorber unit. It is under high pressure and can cause injury if it is opened.
- Ensure clean and residue-free handling if silicone sealant or similar is used. There is a risk of fire if silicone filaments come into contact with hot parts or naked flames.
- Do not operate the refrigerator if it is visibly damaged.
- If the AC power cable for this refrigerator is damaged, it must be replaced by the manufacturer, customer service or a similarly qualified person in order to prevent safety hazards.
- Never use a naked flame to check the refrigerator for leaks.
- This refrigerator may only be repaired by qualified personnel. Inadequate repairs may cause serious hazards.
- Only use universal LPG gas.
- Only operate the refrigerator at the pressure shown on the type plate. Only use pressure controllers with a fixed setting which comply with national regulations.
- Dismantle all refrigerator doors for the disposal of the old refrigerator and leave the shelves in the refrigerator to prevent accidental enclosure and suffocation.
⚠ CAUTION!
- Danger of crushing! Do not put your fingers into the hinge.
- Before starting the device, ensure that the power supply line and the plug are dry.
ℹ NOTICE!
-
Only hold the refrigerator at the body of the refrigerator during transport. Never hold the refrigerator at the absorber unit, the cooling fins, the gas pipes, the door or the control panel.
-
Make sure that the refrigerator circuit is not damaged during transportation. The refrigerant in the refrigerator circuit is highly flammable. In the event of any damage to the refrigerator circuit (smell of ammonia):
– Switch off the refrigerator if applicable.
– Avoid naked flames and sparks.
– Air the room well. -
Do not install the refrigerator near naked flames or other heat sources (heaters, direct sunlight, gas ovens etc.).
-
Danger of overheating! Always ensure sufficient ventilation so that the heat generated during operation can dissipate. Make sure that the refrigerator is sufficiently far away from walls and other objects so that the air can circulate.
-
Check that the voltage specification on the type plate is the same as that of the power supply.
-
Do not open the refrigerant circuit under any circumstances.
-
Only use the AC connection cable supplied to connect the refrigerator to the AC mains.
-
Only use cables with a suitable size.
-
Never pull the plug out of the socket by the connection cable.
-
The refrigerator may not be exposed to rain.
3 Scope of delivery
4 Accessories
Available as accessories (not included in the scope of delivery):
All the accessories are available from specialist dealers. If you have any questions, please contact the dealer or your service partner directly.
5 Intended use
The refrigerators are designed for installation in caravans or motorhomes.
They are only suitable for cooling and storing foodstuffs. The refrigerators
are not intended for the proper storage of medicine.
The refrigerators are designed to be operated on a DC power supply, AC mains
power supply or universal LPG gas.
6 Installing the refrigerator
6.1 Preparing the installation
When installing the refrigerator, note the following:
- Ensure that the floor is solid and level.
- Ensure that the refrigerator is level.
- The refrigerator must be installed so that it is easily accessible for service work, easy to de-install and install and can be easily removed from the vehicle.
-
The outer wall must be fitted with one air inlet ventilation grille (fig. 33a, page 8) and one outlet ventilation grille (fig. 33b, page 8) so that the heat generated can be easily released to the outside:
– Lower air inlet vent LS300 must be installed flush to the vehicle floor.
– Upper air outlet vent LS300 must be installed with the bottom of the vent no lower than equal to the top of the refrigerator cabinet, the bottom of the top vent can be higher than the cabinet. -
Fit an air deflection plate (fig.36, page 8) above the condenser so that the heat does not accumulate in the vehicle.
-
Put insulation wool (fig.31, page 8) on top and sides of the cabinet.
-
If the lower ventilation grille of the air inlet vent cannot be installed flush to the floor, an additional vent (fig.37, page 8 and fig.b, page 16) must be provided in the floor for releasing any possible gas leakage.
-
The distance between the refrigerator and the rear wall must be at least 10 mm.
- The recommended maximum distance between the refrigerator and the rear wall is 25 mm. A distance of more than 25 mm between the refrigerator and rear wall leads to poor performance and increases the power consumption of the refrigerator. Reduce the space behind the refrigerator to maximum 25 mm to create adequate air inlet and outlet ventilation corridor (fig. 4 and fig. 5). Use a ventilation plate, for example, to do this.
Installation with one lower side vent and one roof vent
- If the minimum distance between the air inlet and outlet vents cannot be met, a roof vent must be installed instead of the air outlet vent.
– The roof vent should be installed directly above the back of the refrigerator as far as this is possible. Use an air duct if you need to install the roof vent (fig.6 6) offset, otherwise heat will accumulate there.
If a roof air conditioner is installed, the distance between the roof vent (fig. 7 1) and the air outlet of the roof air conditioner (fig. 7 2) must be at least 300 mm.
- The refrigerator must not be installed at the side of the air inlet and outlet vents as this leads to poor performance and increases the power consumption of the refrigerator.
- The air inlet and outlet vents must not be covered by vehicle parts (such as an open door or by installing accessories such as bicycle racks) while operating.
- A separate flue duct must be installed under the air outlet vent, see chapter “Installing the flue duct” on page 19.
- Install the refrigerator so that it is protected from excessive heat, as this leads to poor performance and increases the power consumption of the refrigerator.
- The electrical installation must comply with national and local regulations.
- The gas installation must comply with national and local regulations. AS/NZS 5601.2 Gas installations LP Gas installations in caravans and boats AS/NZS 5601.1 Gas Installations General Installations
- The refrigerator must be installed in a draught-proof location, see chapter “Installing the refrigerator in a sealed location separate to the living space” on page 13.
6.2 Installing the refrigerator in a sealed location separate to the
living space
Gas-powered refrigerators in caravans or motorhomes must be installed in a
sealed location. This means that the combustion air can not be extracted from
the interior and exhaust fumes are prevented from directly entering the living
space.
A suitable seal must be provided and fitted between the rear wall of the
refrigerator cabinet and the interior of the vehicle. The purpose is to
provide a seal between the interior of the vehicle and the cooling unit and
ventilation area behind the refrigerator.
⚠ WARNING! Fire hazard! Do not use flammable materials such as silicone
sealants, foam or similar for the draught-proof installation.
The manufacturer has applied a sealing strip to the rear surface of the front
frame.
6.3 Making air inlet and outlet vents
NOTE At high ambient temperatures, the refrigerator can only provide its
maximum cooling capacity if the optimum ventilation has been provided.
Make a cut out in the wall to fit the LS300 for the upper and lower vent
system, see chapter “Preparing the installation” on page 6.
If the lower ventilation grille can not be installed flush to the floor, make
an air inlet vent in the floor (fig. b, page 16) behind the refrigerator near
the gas burner.
➤ Shield the end of the opening with a deflector to prevent sludge or dirt
from getting inside while driving (fig. b).
If you have to use a roof vent instead of an upper wall vent:
➤ Cut out a section in the roof. Refer to the roof vent instruction manual for
the required dimensions. When doing so, observe the information, see chapter
“Preparing the installation” on page 6.
6.4 Installing the drain water hose
➤ To avoid damage on the drain water hose, position the hole for the drain
water hose in a way, that the hose does not touch the boiler casing.
➤ Drill a hole through the floor at the rear of the refrigerator.
➤ Install the drain water hose through the drilled hole. Ensure, that the
drain water hose is long enough in order to drain the water outside of the
vehicle.
➤ Ensure that the drain water hose is not kinked.
➤ Seal the area around the drain water hose.
6.5 Installing the ventilation grille
6.6 Install the roof vent
6.7 Installing the flue duct
6.8 Securing the refrigerator
⚠ CAUTION! Only screw through the bushes built into the refrigerator,
otherwise foamed components, including electrical wiring, can be damaged.
NOTE Ensure that the screws are tight, even when under increased loads (while
driving).
➤ Push the refrigerator firmly into its final location with the front flange
sitting hard against the recess front.
7 Connecting the refrigerator
7.1 Connecting to the gas supply
A NOTICE!
- This refrigerator may only be connected to the gas supply by a specialist in accordance with the applicable guidelines and standards.
- Only use cylinders of universal LPG gas fitted with an approved gas pressure regulator. Compare the pressure information on the data plate with the pressure information on the pressure regulator on the gas cylinder.
- Only operate the refrigerator at the pressure shown on the data plate.
- Only operate the refrigerator with the type of gas shown on the data plate.
- Please note the pressures which are permitted in your country. Only use pressure controllers with a fixed setting which comply with the national regulations.
NOTE The pressure of the gas supply must be 2.75 kPa. Check the pressure at the test point before using the refrigerator (fig. o 1, page 23).
It must be possible to shut off the refrigerator from the gas line separately
by means of a shut-off device. The shut-off device must be easily accessible.
➤ Connect the refrigerator securely to the gas supply (fig. o).
Always use a back up wrench when loosening and tightening connections.
➤ Have a leak test and a flame test performed by an authorised specialist
after professional installation. Ensure you are issued with a certificate of
inspection.
7.2 Connecting the device to electrical power supply
A NOTICE!
-
The electrical installation and repairs may only be performed by a specialist in accordance with the applicable regulations and standards.
-
The device can be connected to 12 V DC and 230 240 V AC power supply.
-
The respective negative and positive cables of the DC connections for heating and controls may not be joined with one another in a caravan. This can cause electrical interference or damage to electrical components.
-
DC connection to the heating element must be made to the vehicle engine battery, connection only while engine is running (fig. p).
NOTE -
The mains socket must be easily accessible so that you can unplug the power cord if required, thereby disconnecting the refrigerator from the power.
-
The plug of the AC connection cable must not be cut off.
-
The connection cables must be laid so that they do not come in contact with hot parts of the unit/burner or with sharp edges.
-
Changes to the internal electrical installation or the connection of other electrical components (e.g. extra third party fans) to the internal wiring of the refrigerator will void any claims from the guarantee and product liability.
➤Connect the device as follows :
RUA 5208X
RUA6208X, RUA8408X
AC power
➤ Connect the refrigerator with the mains plug to an AC socket.
DC power
Please note the following cable sizes:
– 12 V DC vehicle battery connection: ≥ 10 mm2
– 12 V DC house battery connection: ≥ 1 mm2
– Connection D+: ≥ 0.5 mm2
– Total cable length: max. 8 m
➤ Protect the DC power supply for the 12 V DC heater with 30 A fuse.
➤ Protect the DC power supply for controls with 3 A fuse.
➤ Run cables to the heating element via a relay or suitable means controlled
by an ignition switch to prevent battery from completely discharging, if the
engine is switched off (fig.p, page 24).
➤ Connect vehicle battery cables to the respective plus and minus terminal
(fig.q 23, page 25).
➤ Connect house battery cables to the respective plus and minus terminal
(fig.q 26, page 25).
D+
In automatic mode, the refrigerator selects the most favourable mode
available. The refrigerator is only operated with DC power when the vehicle
engine is running. The electronics of the refrigerator uses the signal D+ from
the vehicle alternator to detect
the running engine.
➤ Connect the D+ connection to the controls (fig.q 25, page 25) with the
respective terminal of the vehicle.
7.3 Alternative connection methods for DC power supply
Anderson plug controlled by vehicle relay to the ignition switch. Power can
only be supplied if the engine is running.
No house battery recharging from the vehicle.
Anderson plug recharging the house battery via a power diode. The D+ wire can
only get a 12 V signal when the battery is being charged.
House battery recharged by vehicle.
The D+ is turned on and off by the vehicle starting and stopping.
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References
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