Fitting The Control Panels; 12 V Electrical Connection - Truma BG 10 Installation Instructions Manual

Fitting the control panels

When using vehicle-specific or manufacturer-specific
control panels, the electrical connection must be made
according to the Truma interface descriptions (see 230 V elec-
trical connection). Any modifications to the associated Truma
parts will invalidate the warranty and preclude any liability
claims. The installer (manufacturer) is responsible for provid-
ing the user with operating instructions and the information
that is printed on the control panels.
Make allowance for the length of the connector cable (3 m)
when choosing a location. A 5 m cable extension is available
if necessary.
m
m
5 5
Ø
m
m
5 0
Ø
28
30
27a
25
27
Figure 13
If the control panels cannot be flush-mounted, Truma can
provide an on-surface frame (25 – part no. 40000-52600)
as an accessory by request.
Install the control panel for gas mode (26) and the control
panel for electrical mode (27) (if any) next to each other if
possible (distance between hole centres: 66 mm).
For each control panel, drill a hole with a diameter of 55 mm
(gas mode) and 50 mm (electrical mode) (distance between
hole centres: 66 mm).
Connect the control panel cable (28) to the control panel for
gas mode (26), then fit the rear blank cover (29) as strain relief.
Connect the control panel using a 4 x 1.5 mm² cable (not in-
cluded – see "230 V connection, control panel"). Push the ca-
ble through the rear cover (27a) and secure using strain relief.
Push the cable through towards the rear and route the con-
nector cables (28 + 30) to the boiler.
Route the connector cable with connector (28) to the
12 V electronic control unit (for connection, see "12 V elec-
trical connection").
Secure both control panels with 4 screws each (31).
At the 230 V control panel it must be ensured that the
rear cover closes properly and is securely mounted be-
tween the wall on which the boiler is mounted and the control
panel cover frame. It must not be possible to remove the
rear cover when the control panel is fitted.
Fit the front cover (32).
Truma supplies side parts (33) as accessories to improve
the appearance of the cover frames. Please contact your
dealer.
12
29
28
31
26
32
31
32
33
12 V electrical connection
Disconnect device from power supply before starting to work
on electrical components. Switching off at the control panel is
insufficient!
The device must be disconnected from the on-board power
supply when electric welding work is being carried out on the
vehicle body.
Reversing the polarity of the connections will result in
a risk of cable fire. Any warranty or liability claims will
also be invalidated.
Plug the control panel cable (28) with the connector (28a) into
the electronic control unit.
In order to attach it securely, route the control panel cable (28)
through the cable guide (28b).
The 12 V electrical connection is made at the clamp (35).
orange = positive 12 V
blue = negative
This is done by pressing from above with a small screwdriver
and pushing the cable in from the front.
Connect to the fuse-protected on-board power supply (central
electrical system 5 – 10 A) using a 2 x 1.5 mm² cable.
Connect negative line to main ground connection. For lengths
of over 6 m, use a 2 x 2.5 mm² cable. If the equipment is con-
nected directly to the battery, the positive and negative lines
33
must be protected.
If necessary, remove the outer cable sheathing at the cover
leadthrough.
No other 12 V consumers must be connected to the supply line.
The boiler fuse (36), 1.6 A (slow-acting), is on the electronic
control unit.
Screw on the cover (34).
Figure 14
When power packs or power supply units are being
used, note that the regulated output voltage is between
11 V and 15 V and the alternating current ripple is < 1.2 Vpp.
34
28a
36
28b
35
28