Securing The Appliance; Exhaust And Combustion Air Ducting; Permissible Duct Lengths; Installing The Wall Cowl - Truma Combi D 6 Installation Instructions Manual

Securing the appliance

Check whether the vehicle has a load-bearing floor, double
floor or false floor for securing the heater. If the floor is unsuit-
able, create a load-bearing surface beforehand by gluing a
plywood board to the floor, for example.
Screw heater to vehicle floor, double floor or false floor
using four B 5.5 x 25 screws (included in scope of delivery).
Depending on the situation it may be possible to secure the
heater with three screws; in this case, always screw alu-
minium feet (a) and optionally one of the plastic feet (b) to
the vehicle floor.
a
a
Figure 6

Exhaust and combustion air ducting

Only Truma duct sets (consisting of an exhaust gas sound
muffler, an extraction duct and an air intake muffler) must be
used for the Combi D heater, since the appliance has been
type tested with these ducts. Do not pinch or kink these ducts
during installation.
The following duct sets are available:
Duct set 60 cm part no. 34501-01 *
Duct set 70 cm part no. 34501-02
Duct set 100 cm part no. 34501-03
Duct set 150 cm part no. 34501-04
* suitable for extremely small installation compartments

Permissible duct lengths

Duct lengths of between 60 cm (min.) and 150 cm (max.) can
be used with the wall cowl.
5
4
Figure 7
measured on a sample for series installation (fixed lengths).
The exhaust gas sound and air intake muffler can be shortened
in isolated cases. In this case the inner duct (4a) of the exhaust
gas sound muffler (4) must be fixed using a new lock wash-
er (6 – part no. 34020-45200). Truma supplies the lock washer
tool as an installation accessory (part no. 34020-45000).
b
Figure 8
A minimum exhaust gas sound muffler (4) bending radius of
8 cm must be taken into consideration when the exhaust duct
b
is being dimensioned.

Installing the wall cowl

Fit the wall cowl to a surface that is as flat as possible so that
air can flow around at all sides.
Wall cowl cut-out
Fix the installation template (part no. 34020-42000) to the out-
side wall of the vehicle. Mark wall cowl holes and cut-out.
Remove template, drill holes and make cut-out.
If necessary, line the vehicle wall around the opening with a
suitable material so that the fastening screws can obtain an
adequate amount of grip!
Fit outer part of cowl
Fill groove on outer part of cowl (8) with plastic body sealant
(not silicone), then secure outer part of cowl to wall of vehicle
with 4 screws.
7 5, 4
8
60 – 150 cm
Figure 9
The length of the exhaust gas sound muffler (4), the
extraction duct (5) and the air intake muffler (7) can be
5
Before drilling, always check for underlying/concealed
cables, fuel lines, frame sections and the like.
8
4
6
4a
3,5 x 25
15