12 V Voltage Supply; Battery Connection; Room Temperature Sensor Connection; Digital Control Panel Connection - Truma VarioHeat Instructions De Montage

Plug / contact Description
X7-1 Room temperature sensor
X7-2 Room temperature sensor
X7-3 Window switch or jumper
X7-4 Window switch or jumper
X7-5 —
X7-6 —
X7-7 —
X7-8 —
X5-1 + Battery
X5-2 - Battery
X6 TIN bus / CP plus / CP classic

12 V voltage supply

Electrical lines, switching and control equipment for heaters
must be in locations that will not cause the operation thereof
to be adversely affected under normal operating conditions.
The breakthroughs of all lines leading to the outside must be
protected from splash water.
Disconnect the appliance from the power supply before start-
ing to work on electrical components. Switching off at the
control panel is insufficient.
The appliance must be disconnected from the on-board pow-
er supply when electric welding work is being carried out on
the body.
In order to ensure an optimum power supply, the heater must
be connected to the fused on-board power supply (central
electrical system 10 A) with 2 x 2.5 mm cables² (2 x 4 mm
when lengths exceed 6 m²). Voltage drops in the supply line
must be taken into consideration if necessary. Connect nega-
tive line to main ground connection. If the equipment is con-
nected directly to the battery, the positive and negative lines
must be fused (10 A).
None of the electrical connector cables can be longer
than 10 m.
The fuse F1 is tripped if the polarity is incorrect.
No other consumers must be connected to the supply line!
When power packs or power supply units are being
used, note that the output voltage is between 11 V and
15 V and the alternating current ripple is < 1.2 Vss.
A body battery must be provided if the caravan (vehicle class O)
is used for autonomous heating operation without being con-
nected to the power mains. A 12 V
omous heating operation via the towing vehicle (PIN 9 or 10 –
13-pole trailer coupling connector) is not permitted.
All manuals and user guides at all-guides.com
voltage supply for auton-
Power supply with power supply unit without battery
– The controlled output voltage of the power supply unit must
be between 11 V and 15 V.
– The AC voltage ripple must be < 1.2 Vss.
– The power supply unit must constantly provide the heater
with at least 25 A. If this is not guaranteed when additional
consumers are connected to and operated on the power
supply unit, the heater requires its own power supply unit.
Alternatively, a power supply unit can be used that con-
stantly provides the heater with at least 10 A. This must
have short-circuit protection on the output side for each
outgoing circuit. The short circuit protection must switch
off the voltage supply to the heater within 1 s. Following a
shutdown due to a short circuit, the voltage supply must
not be restored until after the heater has been inspected
and additional manual action has been taken (e.g. engag-
ing a circuit breaker or replacement of a meltable fuse).

Battery connection

Depending on the cable cross section, crimp the supplied
6.3 mm flat connectors onto the positive and negative line
and insert at the connector X5 (contact 1 / 2) (if necessary,
fuse the positive and negative lines).

Room temperature sensor connection

Connect the bushing X7 of the room temperature sensor to
the connector X7 of the cable harness.

Digital control panel connection

Plug in the connector X6.

Analogue control panel connection (optional)

Plug in the connector X6.

Window switch connection (optional)

Split the jumper (contact 3 / 4) from the bushing X7. Cut off
the two plug contacts from the cable of the window switch
and connect to the contact 3 / 4. Any polarity.
17