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Connecting the refrigerator
Observe the following instructions when connecting the refrigerator:
• Observe the recommended cable length:
– 12 V DC starting battery to heater connection: ≥ 10 mm
– 12 V DC house battery to power module connection: ≥ 1 mm
– Connection D+: ≥ 0.5 mm
– Total cable length: max. 8 m
• Protect the DC starting battery supply for the 12 Vg heater with 30 A fuse (
– Install the 30 A fuse as close as possible to the battery.
– For installation in caravans: Install the 30 A fuse in the caravan connection of the towing vehicle.
• Protect the DC house battery supply for the power module with a 3 A fuse.
Proceed as follows:
1. Route the starting battery cables to the DC heater through the ignition on/off relay (fig. m 2, page 25) or suit-
able means controlled by an ignition switch to prevent the battery from discharging completely when the
engine is off.
2. Connect the starting battery cables to the respective plus and minus terminal (fig. l 23, page 23).
3. Connect the house battery cables to the respective plus and minus terminal (fig. l 26, page 23).
D+
In automatic mode, the refrigerator selects the most economical connected type of energy. The refrigerator only
runs on DC power when the vehicle engine is running. The refrigerator's electronics use the D+ signal from the
vehicle's alternator to detect the running engine.
➤ Connect D+ to the alternator (fig. l 25, page 23).
7.3 Alternative connection variants for connection to DC power supply
Connection variant A (fig. n)
n
• D+ is connected to the alternator of the vehicle.
• No charging of the house battery by the vehicle.
26
2
(fig. l 25, page 23)
RUA 5308X, RUA 6508X, RUA 8508X
2
(fig. l 23, page 23)
2
(fig. l 26, page 23)
fig. m 1)
Refrigerator DC connections
D+
25
House Battery
Anderson Plug
Anderson cables must be the
recommended size.
:
Power Module
Heater
+
-
+
26
-
23
EN
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