Underfloor Installation With Wall Cowl Kit; Attaching The Heater; Warm Air Distribution And Circulating Air Return For Interior Installations; Warm Air Distribution - Truma Trumatic E 2400 E Gebrauchsanweisung

Underfloor installation with wall cowl kit

See installation option picture 2 (page 2).
Fit wall cowl to a surface on an exterior wall (side skirt) that is
as flat as possible (see "Interior installation with wall cowl kit").
If the wall cowl is installed with brackets or similar un-
der the floor, the vehicle floor must be airtight and the
exhaust duct must always be routed at least as far as the side
wall (see "Selecting a location").

Attaching the heater

Screw the 3 fastening bows (1, 2 + 3) to the heater. Secure
heater to vehicle floor using lugs 1 + 2. Fix the fastening bow
(4 – accessory part no. 39050-74000) and the lug (3) with
screws (5). Place spring washers beneath all screw heads and
nuts.
Warm air distribution and circulating air
return for interior installations

Warm air distribution

Heating air intake openings must be arranged so that exhaust
gas from the vehicle engine and the heater cannot be drawn
in. Structural measures must be taken in order to ensure that
the heating air that is led into the interior of the vehicle cannot
be contaminated (e.g. by oil vapours). This is done, for exam-
ple, in air heaters using circulating air operation both in interi-
or installations and exterior installations (for air heaters using
fresh air operation the fresh air must not be drawn in from the
engine compartment or the vicinity of the exhaust pipe or the
exhaust gas outlet of the heater).
The warm air (W) is blown out of the heater either directly or
through a warm air duct VR 80 (Ø 80 mm).
Remove the grid on the warm air outlet of the heater. Connect
VR 80 pipe (Ø 80 mm). After installing a piece for pipe branch-
ing, the VR 72 (Ø 72 mm), ÜR (Ø 65 mm) or ZR 18 (Ø 49 mm)
pipe can be routed further.
To prevent overheating, at least one air duct must be not
able to be closed (swivel air outlet SCW 2). Secure all pipe
connections with self-tapping screws. Fix pipes with clamps.
The warm air system is designed individually for each vehi-
cle type using the modular design principle. A wide range
of accessories is available for this purpose (see brochure).
Diagrams with optimum installation suggestions for warm
air systems can be requested free of charge from the Truma
Service Centre.
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Circulating air return

The circulating air (U) is drawn in by the heater again either
directly or via a VR 80 pipe section (Ø 80 mm).
1. Direct intake: If the heater is installed in a storage box or the
like, drill 2 holes Ø 75 mm or make an opening of an appro-
priate size for the circulating air return.
Do not obstruct the air routes to the heater!
2. Circulating air outside the storage space can be drawn
in through a VR 80 (1) Ø 80 mm (max. 1 m length) and
led back to the heater. The storage area can then be fully
utilised.
Remove protection grille from the connection (3). Place pipe
section (1) into the grille connector and secure with the exist-
ing screws. Attach swivel air outlet SCW 2 to the end of the
pipe (4).
W
U
Warm air supply and circulating air return
for external installations
See installation option picture 2 (page 2).
The warm air supply and the circulating air return between
the heater and the vehicle must be provided using the flexible
LF 18 air ducts (Ø 83 mm, length 60 cm). The air ducts can be
shortened as desired. A protection box above the entire heat-
ing system protects them from damage and weather influenc-
es and also acts as additional insulation.

Connecting the pipes to the heater

Remove the two protection grilles from the heater. Coat both
pipe sections LF 18 (1) with plastic body sealant at the stiffened
ends (2) and slide into the openings of the heater (W + U). Se-
cure with 2 self-tapping screws (3). The pipe connection must
be fitted correctly, as otherwise spray water may find its way
into the heater!
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