DBW 2010 / 2016 Combustion air supply
41
8 Combustion air supply
Under no circumstances may the combustion air be taken from areas
occupied by people. The combustion air intake opening must not
point
in the direction of travel. It must be located so that it cannot become
clogged with dirt or snow and cannot suck in splashing water.
Maximum dimensions of the fuel intake line:
– Internal diameter: 55 mm
– Maximum line length: 5 m without the exhaust extension
– Maximum bends: 270 °
The combustion air intake must not be routed above the exhaust outlet.
NOTE:
If the combustion air intake line cannot be installed so that it slopes
downwards, a water drain hole with a diameter of 4 mm is to be made at
its lowest point.
If the heater is installed in a general installation space near the vehicle’s
fuel tank, the combustion air must be taken in from the outside and the
exhaust fumes discharged into the atmosphere. The openings must be
splash-proof.
A ventilation opening measuring at least 20 cm
2
is required if the heater
is installed in an enclosed box.
The size of the ventilation opening must be increased subject to consul-
tation with Webasto if the temperature in the box exceeds the permitted
ambient temperature of the heater (see Technical data).
1303560C_DBW 2010 EA_degbfr.book Page 41 Tuesday, March 5, 2013 9:05 AM
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