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D+ − connection :

1.10.4 D+ and solar connection (only for AES models)

In >Automatic Mode< the AES electronic

system automatically selects the most efficient

energy supply. In automatic mode the electronic

system uses the D+ signal (dynamo +) of the

alternator to detect 12V DC. 12V DC operation

is selected only while the engine is running in

order to prevent battery discharge.

Provide a 16 A fuse to protect on−board 12 V

circuit.

In order to ensure that the 12V power supply is

shut off when stopping the engine (otherwise the

battery would discharge within a few hours),

perform the power supply to the heating element

(connection A/B in wiring diagram) in a way to

have the 12V supply only live while the vehicle

ignition is switched on.

The connection C/D (interior light, electronics,

cable black / violet) must be permanently provi−

ded by a 12V DC power supply to be protected

by a 2A fuse.

If the appliance is installed in a caravan

the respective leads for the 12V+ and

12V- connections A/B and C/D must not

be connected to each other on the cara-

van-side .

CAUTION!

D+

S+

on the vehicle

on the appliance

Fig. E32

Connections :

1.10.3 Terminal strip

A = Ground heating element DC

B = Positive connection, heating element DC

C = Ground electronics

D = Positive connection, electronics

D+ = Alternator signal

S+ = AES input signal from solar charge

regulator

D+

S+

on the vehicle

on the appliance

Fig. E31

For MES and AES it is compulsory to provide a permanent 12V DC supply at the ter-

minals C/D (permanent voltage supply for functional electronics).

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Dometic RMS Manuale di Servizio Pagina 16

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