Fuel Supply - Spheros Thermo E 200 Einbauanweisungen

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
SPHEROS 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.
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.
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 stone damage
– any dripping or evaporating fuel must neither collect nor be ig-
nited 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.
NOTE:
The fuel pump is delivered in series for a two-pipe system (with return
line).
The fuel pump must not be used for bleeding puposes!
For further information on bleeding, refer to the Workshop Manual!
ATTENTION:
The operation with a closed return line will cause damage to the
fuel pump, fuel can leak out - fire hazard!
Fuel lines and filters must be protected against excessive heat.
A dry-run of the fuel pump must be prevented.
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 Spheros.
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
Fuel Supply
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