Dometic Buttner MTBCB10, Installation And Operating Manual

Page: 19 / 148

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• Always connect the battery control booster
before connecting the batteries.
• Do not use ferrules. Strip the cable ends as fol-
lows:
– Signal cable 12 mm (0.5 – 1.5 mm²)
– Charging cable 15 mm
• Determine the cable cross-section:
• Protect the positive cable of the house battery
with a fuse
Ι
(20 A).
• Protect the positive cable of the starting battery
with a fuse
ΙΙ
(30 A).
1. Connect COM– to the negative terminal of the
house battery or to ground (chassis).
2. Connect BORD+ to the positive terminal of the
house battery.
3. Connect START+ to the positive terminal of the
starting battery.
4. Connect the negative terminal of the house
battery to the negative terminal of the starting
battery or to ground (chassis) (fig.
c
2 ,
page 7 to fig.
f
2 , page 10).
5. Connect the probe of the temperature sensor
to the negative terminal of the house battery
(fig.
c
1 , page 7 to fig.
f
1 , page 10).
6. Select the charging program suitable for the
type of house battery used (see chapter “Set-
ting the charging program” on page 21).
Connection variant A (fig.
c
, page 7)
Connection variant for caravans, suitable for all
12 V towing vehicles according to previous and
future standards, Euro 6+.
A
I
• The battery control booster is controlled via
pin 10 by starting battery of the towing vehicle.
1. Slide the DIP switch (fig.
2
1 , page 3) to the
position “D+”.
2. CSTART to pin 10 (charging connec-
tion trailer vehicle battery) of the 13-pin trailer
socket (
3 ).
3. Connect the negative terminal of the starting
battery of the towing vehicle to pin 13 of the
13-pin trailer socket (
4 ).
4. To connect the battery control booster pro-
ceed as shown in fig.
c
, page 7.
Cable
cross-section
Cable length
START+
to starting
battery
Cable length
COM–
BORD+
to house
battery
2.5 mm² > 4 m > 2 m
4 mm² > 8 m > 4 m
NOTICE! Damage hazard
Do not use a cutoff relay. To protect the
trailer connector and the cables in the
towing vehicle, the battery control
booster limits the current consumption
to 11 A in all charging phases.
NOTE
• A 13-pin trailer socket (according to
ISO 11446) with a 12 V charging cable
(cable cross-section >2.5mm²) is
required for connection to the towing
vehicle.
• The battery control booster automati-
cally switches off the voltage on pin 10
when the ignition is switched off.