Fuel Supply; Fuel Filter - Valeo THERMO E 200 Einbauanweisung

Thermo E 200/320
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Fuel Supply

Fuel is extracted from the vehicle's fuel tank or from a separate fuel tank.
Fuel lines and filters must be completely vented without using the fuel
pump of the heater before commissioning . Thereby also during vehicle
operation a safe fuel supply without air bubbles must be ensured contin-
uously.
7.1. Fuel lines
When using fuel hoses, basically the hoses supplied or offered by
Valeo are to be used. If this is not the case, the fuel hoses must at least
comply with the requirements of DIN 73379. Fuel hoses must not be
kinked, crushed or twisted and must be secured at intervals of about 25
cm with clamps.
Materials commonly used in the construction of vehicles may be also
used for fuel hoses taking into account a suitable connection system in
each case. The selection should be done considering the ambient tem-
perature range and the fuel (Bio Diesel) used.
To prevent air inclusions from forming in the fuel, the fuel lines should be
routed in an upward pitch, if possible. Connections within the fuel lines
must be secured by means of hose clamps unless mechanical screwed
connections are used.
To prevent the fuel lines from draining, the outlet of the return line in the
tank should be below the fuel level.
ATTENTION:
If the heater is operated without coolant, the outer shell of the heat-
er may reach a temperature equalling the ignition temperature of
diesel fuel!
– The lines must be protected from thrown-up gravel
– any dripping or evaporating fuel must neither collect nor be
ignited by hot components or electrical equipment.
To prevent this, optionally a drip pan with defined drain holes is
to be installed in the area below the interface burner housing/
fuel line connectors/heat exchanger.
ATTENTION:
The operation with a closed return line will cause damage to the
fuel pump or fuel line. Fuel can leak out - fire hazard!
Fuel lines and filters must be protected against excessive heat.
The fuel pump must not run dry.
Unsupported fuel lines must be secured to prevent them from sag-
ging.
The installation of an additional fuel pump is permissible only in
consultation with Valeo.
For legal provisions refer to Chapter 1.
7.1.1. Permissible dimensions of the fuel lines
– Inside diameter for suction and return lines: 6 mm (other diameters
on request).
– Max. permissible length of each suction and return line: 15 m
– Max. permissible suction height: 1 m
– Max. permissible admission pressure: 0.3 bar
Deviations are to be approved by Valeo.
7.2.

Fuel Filter

A fuel filter supplied or approved by Valeo must be used (consider the
Fuel Supply
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