Dometic RMDX21 Installation Manual page 33

RMDX21, RMDX25
AC power
➤ Connect the refrigerator with the mains plug to an AC socket.
DC power
Please note the following cable sizes:
– < 6 m (interior): 6 mm
– > 6 m (interior): 10 mm
– Connections D+ and S+: 1 mm
➤ Protect the DC power supply for heater with 20 A fuse and use a minimum
of 6 mm low voltage cable.
➤ Protect the DC power supply for controls with 2 A fuse and use a
minimum of 1 mm low voltage cable.
➤ 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. u, page 16).
➤ Connect DC positive heater cable to terminal (fig. t E, page 14).
➤ Connect DC negative heater cable to terminal (fig. t F, page 14).
➤ Connect continuous 12 Vg positive supply to terminal (fig. t C,
page 14).
➤ Connect continuous 12 Vg negative supply to terminal (fig. t B,
page 14).
D+ (RMDX25 only)
In automatic mode, the refrigerator selects the most favourable mode
available. The refrigerator is only operated with direct current when the
vehicle engine is running. The electronics of the refrigerator uses the
signal D+ from the light system to detect the running engine.
➤ Connect the D+ connection to the controls (fig. t D, page 14) with the
respective terminal of the vehicle.
EN
2
2
2
Connecting the refrigerator
33