Mounting The Heater; Double Duct Connection To The Heater; Underfloor Installation With Wall Cowl Kit; Warm Air Distribution And Circulating Air Return For Interior Installation - Truma Trumatic E 2400 Operating And Installation Instructions

Compress beginning of exhaust duct (1) so that the coils are
tightly compacted, slide it over the O-ring (2a) on the con-
nection (2) as far as the collar (3) (cowl bend facing upwards)
and tighten clamp (4) so that the flanged rim of the clamp is
gripping the collar.
1 4
Figure 15
Coat the toothed connection (9) with plastic body sealant – not
silicon – and push the combustion air intake duct (5) over it.
Secure the cowl inner part (11) with 3 screws (12) (pay atten-
tion to the installation position. The Truma logo must be at
the bottom). Fit outer part of cowl (13) and screw it on with
2 screws (14).
A new O-ring must be fitted whenever the exhaust duct
has been removed!

Mounting the heater

Depending on the installation position, securely screw the
heater into place with the fastening bow (a) or fastening
brackets (b). Attach the exhaust double duct to the wall with
the pipe clip ZR 24 (c) if necessary (parts contained in the ac-
cessory kit).
Figure 16

Double duct connection to the heater

Compress exhaust duct (1) at its beginning so that the coils
are tightly compacted. Slide clamp (4) over exhaust duct (1).
Slide exhaust duct over the O-ring on the connection (2) as far
as the collar (3). Secure with clamp (4) so that the flanged rim
of the clamp is gripping the collar. Slide combustion air intake
duct (5) onto connection (6) and secure with clamp (7).
Figure 17
A new O-ring must be fitted whenever the exhaust duct
has been removed!

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").
2
2a 3
Mounting 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
Figure 18
Warm air distribution and circulating air
return for interior installation

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 example, in
air heaters using circulating air operation both in interior instal-
lations 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 duct (Ø 80 mm). After installing a piece for
duct branching, the VR 72 (Ø 72 mm), ÜR (Ø 65 mm) or
ZR 18 (Ø 49 mm) duct 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 duct
connections with self-tapping screws. Fix ducts with clamps.
The warm air system is designed individually for each vehicle
type using the modular design principle. A wide range of ac-
cessories is available for this purpose (see brochure).

Circulating air return

The circulating air (U) is drawn in by the heater again either
directly or via a VR 80 duct 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
appropriate size for the circulating air return.
Figure 19
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.
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