Webasto Thermo Top Evo - B, Руководство по установке

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Fuel
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8 Fuel integration
The fuel filler must not be situated in the passenger compartment and must
be provided with an effective cap to prevent fuel spillage. (Requirement
from 2001/56/EC, Appendix VII, Point 2.3.1. and ECE R122, Point 5.3.3.1.).
In the case of liquid fuel heaters, where a supply separate to that of the ve-
hicle is provided, the type of fuel and its filler point must be clearly labelled.
(Requirement from 2001/56/EC, Appendix VII, Point 2.3.2. and ECE R122,
Point 5.3.3.2.).
8.1. Integration in engine supply or return line
The fuel integration is carried out either in the supply or return line, or with
a special fuel standpipe. On vehicles with a fuel pump, the fuel may not be
removed from the fuel supply line!
– If the vehicle has a check valve to the fuel tank, fuel may not be removed
from the return line.
– It must be ensured that no zero balance results in the vehicle system due
to the fuel removal.
– If fuel is removed from the swirl pot, it must be ensured that this pot is
not completely drained.
Proper installation is carried out as shown in fig. 9: Example of a fuel stand-
pipe.
Legend:
33) from fuel tank
34) to metering pump
35) to engine
8.2. Integration via fuel removal unit
Also see chapter 6, "Example for installation in a passenger car"
The fuel standpipe is installed in the fuel removal unit of the fuel tank.
See fig. 12.
Legend fig. 12:
31) Fuel standpipe
32) Fuel removal unit with hole
The installation surface of the fuel standpipe must be clean, flat and burr-
free. When mounting the fuel standpipe in the fuel removal unit, ensure
careful routing of the standpipe. This may not impair the operation of the
parts of the fuel removal unit including the fuel gauge in any operating
mode. The length of the standpipe must be chosen so that a minimum dis-
tance of 10 mm over the fuel tank bottom or 20 mm over the bottom of
the fuel removal unit is ensured.
The specified securing measures of the vehicle manufacturer and the cor-
responding torques must be complied with.
Under no circumstances whatsoever may the fuel standpipe be
installed in the fuel tank body, but instead only in the fuel re-
moval unit.
8.3. Fuel line
The fuel line is divided into the intake and the delivery line. As a result, the
intake line is a connection between the fuel tank and the metering pump,
while the delivery line produces the connection between the metering
pump and the heater.