DBM20A 12V/12V Standard (System without options)

For a better understanding of how the system is programmed read first the Programming the system steps on page 6. Otherwise it can be that the system has to be reinstalled.

Read as well the notes for the mounting and wiring extension on page 8 before to start the installation.

Wirinjg extension

If extension of the power wires red/black/blue is needed use 4mm² wires for up to 1 additional meter, for up to 3 additional meters use 6mm² and if needed longer use 10mm² (copper cross section – not external insulation size) wires. Use 10mm2 wires to extend wires if DBM20A is mounted in a Trailer.

Please read Instructions carefully prior to installation.

Choice of light blue connection IGN:

With alternators (smart alternators) that cut off charge temporarily, connect IGN wire to Car Ignition (Terminal 15). When the alternator turns off, the DBM20A keeps charging until the Main voltage drops below 11.9V or the alternator kicks in again.
With all other alternators do not connect the light blue (IGN), DBM20A stops charging when the Main voltage drops below 12.7V. The DC/DC Charging automatically starts when Main voltage is higher than 13.3V.

If needed connect the light blue IGN wire on Car Ignition (Terminal 15), otherwise leave unconnected.
Connect all black GND wires.
Connect now the red wire (+main) (ATTENTION: system is starting up -> refer to page 6 Programming the system). (Continue installation only after System has switched to Stand-By mode)
Connect the blue wire (+aux) at last.

Notice

For a safe installation it is necessary to install the fuses in the red wire path (+ main: 30A) and in the blue wire path (+ aux: 30A)!

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