Dometic TEC 40D [21/220] Creating a priority circuit

TEC40D Connecting the electrical power to the generator

10.3 Creating a priority circuit

You can create a priority circuit using a changeover relay whereby the external volt-

age supply has priority over the generator, see circuit diagram (fig. c, page 10):

➤ Mount the changeover relay in a suitable position.

➤ Connect the wires following the circuit diagram (fig. c, page 10).

10.4 Connecting the starter battery

➤ Connect the positive terminal of the battery (fig. a 1, page 7) with the positive

battery terminal connection using a suitable cable:

– Cable lengths < 6 m: Cross-section of 16 mm²

– Cable lengths < 6 m: Cross-section of 25 mm²

➤ Connect the negative terminal of the battery (fig. a 2, page 7) with a suitable

cross-section (see above) as follows:

➤ Connect the earth connection of the generator with the vehicle chassis.

➤ Remove any paint or rust from the chassis if necessary to ensure good contact.

➤ Protect the connections with an anti-corrosive agent (e.g. lubricating grease,

lubricant/protective spray).

10.5 Connecting the control panel

➤ Connect the control panel to the connection box using the extension cable pro-

vided on the plug for the control panel (fig. 0, page 6).

10.6 Connecting the float

➤ Connect the float from the tank to the float connection (fig. a 4, page 7).

Item Description

1 Load

2 AG113 changeover relay

3 Generator

4 External power supply

NOTICE!

The starter battery must have 12 V and a capacity of at least 60 Ah.

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