Eberspächer HYDRONIC B4WSC Technical manual - page 13
13
D
S
GB
F
bis 2 m
bis 1,5 m
2
3
4
5
1
Conducting the combustion air / exhaust gas
Conducting the combustion air
The combustion air must be drawn in from the out-
side (not from the passenger compartment
or boot).
As described in these mounting instructions, the
heater is installed inside the engine compartment. If
the air intake fitting for the combustion air is situated
in an area where the combustion air does not reach
temperatures exceeding 25
°C, and where neither
road spray nor dust / dirt are to be expected, the
combustion air intake is already complete. If this is
not the case, a flexible hose with an inner diameter of
20 mm and up to 1.5 m long has to be connected to
take the combustion air from an area complying with
this condition.
The inlet opening of the combustion air pipe may in
that case not be built in against the air stream and
must be installed in such a manner that it cannot be
clogged by dirt and snow and that penetrated water
may run off.
Push on the end sleeves so that a 16 mm diameter
ball cannot be inserted (requirement of StVZO
“Technical Demands Expected of Heaters”).
Conducting the exhaust gas
The items supplied include a flexible exhaust hose
with an inner diameter of 24 mm and 1000 mm long.
It must be cut apart at a suitable place and the ex-
haust silencer inserted (compare diagram on page 3).
If necessary, the exhaust hose pipe may be short-
ened or extended up to a maximum length of 2 m.
The exhaust gas pipe must not protrude beyond the
external limits of the vehicle.
The exhaust pipe must either slope downwards
slightly, or a 5 mm diam. hole must be drilled into
the lowest point of the pipe to allow condensate to
drain off.
Always fasten the silencer; longer exhaust pipes must
always be fastened at intervals of approx. 50 cm.
up to 1.5 m
up to 2 m
햲 HYDRONIC
햳 Combustion air hose
햴 Exhaust gas pipe
햵 Exhaust gas silencer
햶 Exhaust tail pipe
Arrange the exhaust gas outlet in such a manner
that the exhaust gas cannot be immediately drawn
in again.
The exhaust gas outlet must lead out into the open air.
The exhaust gas pipe must be arranged in such a
manner that exhaust gas cannot enter the vehicle,
be drawn in by the vehicle's fan or by the heater
fan
1)
, nor must it impair the function of vital vehicle
parts in any way (ensure that an adequate distance
is maintained).
Run the exhaust gas pipe in such a manner that
it cannot be clogged up by dirt, snow or water
(draining hole). Do not position the outlet opening of
the exhaust gas against the air stream.
An end sleeve crossed with a web must be mounted
on the end of the exhaust gas pipe so that a 16 mm
diameter ball cannot be inserted (requirement of
StVZO “Technical Demands Expected of Heaters”).
1)
This requirement is considered to be fulfilled when
the end of the exhaust gas pipe is run upwards or
to the side, or when the exhaust gas pipe passes
underneath the vehicle floor to the vicinity of the
side or rear limits of the driver's cab or the pas-
senger compartment.
!
Danger of poisoning and burns!
Every combustion process creates exhaust gas
which contains toxic constituents; for this reason
and due to the high temperatures occurring, the
exhaust gas duct needs to be absolutely carried out
in accordance with the specifications of these
mounting instructions.
During heating operation, avoid any work in the area
of the exhaust gas duct.
In such a case, switch off the
HYDRONIC
beforehand and wait until all parts have completely
cooled down.
If necessary, wear protective gloves.