Truma Combi 4 Installation Instructions Manual page 11

18
10*
* Minimum dimensions – additional space must be provided for
the gas connection, water connections and the FrostControl
depending on the installation situation. All dimensions in mm.
In order to reduce the potential danger caused by a
heater that becomes loose during an accident, the
upper cover plate (17) of the installation box can be secured
with screws to other pieces of furniture in a position that
makes it flush with the heater. Depending on the installation
situation, it may be necessary (especially with rear-mounted
fixtures) to install a stable furniture console (18) before (next
to) the heater, perpendicular to the direction of travel. For this
purpose, a solid spacer (minimum cross section 30 x 50 mm)
can be attached at a height of approx. 180 mm above the
floor, or a board (18a) for sliding in on a stable furniture
bracket.
There must not be any heat-sensitive materials beneath the
unit (e.g. flooring such as PVC or similar, cables etc.), since
high temperatures can occur at the base of the unit.
No cables or water lines may be attached to the equipment's
insulation in order to prevent damage to components inside
the equipment.
Parts of the vehicle which are important for operation are not
to be adversely affected.
The cowl must be placed in such a way that exhaust gas
cannot find its way into the vehicle interior. The cowl is
available as a wall or roof model.
R
The wall or roof cowl must be mounted to ensure that there
are no tank pipes or tank air vents within a radius of 500 mm
(R). In addition, no air discharge apertures for the living area or
window openings may be located with 300 mm of it.
If installing the cowl directly underneath a window that
will be opened, installation of an electric window switch
(part no. 34000-85800) is mandatory.
17
10*
500*
18a
500*
300 mm
Fastening the appliance
Check whether the vehicle has a load-bearing floor or false
floor for securing the heater. If the floor is unsuitable, create a
load-bearing surface beforehand by gluing a plywood board to
the floor, for example.
a
Screw heater to vehicle 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 aluminum feet (a) and
selectively one of the plastic feet (b) to the vehicle floor.
The heater must be screwed to the floor of the
vehicle or the false floor in order to prevent the
gas system from becoming damaged because of move-
ment while driving!
Exhaust duct
Only Truma exhaust duct AA 3 (part no. 39320-00) and
combustion air infeed ZR (part no. 39580-00) may be used
for the Truma Combi heater because the unit was tested and
approved only with these ducts. Do not pinch or kink these
ducts during installation.
The roof cowl is available as an accessory to the heat-
ing device – assembly instructions are enclosed with the
delivery.
Installation of the wall cowl
Permissible duct lengths
The length specifi cations refer to the combusti on air
intake duct.
max.
20 cm
max. 100 cm
For the wall cowl the duct lengths can be routed from min.
60 cm to max. 100 cm as ascending duct in whichever way
required, or descending by max. 20 cm.
Duct lengths from 100 cm to max. 150 cm must always be
installed so that they are sloping upwards.
a
max. 100 cm
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