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Fuel Tanks
If possible, the tanks must be located so that they are
on the same level as, or a little higher than, the engine.
If they are located lower, bear in mind that fuel feed
pump maximum suction height varies between 1.5 m
(4.9 ft) and 2.0 m (6.6 ft). Note that the suction height
must be measured from the suction line lower opening,
i.e. 25 mm (1") above the tank bottom. More informa-
tion about fuel lines and suction heights can be found
in the
Fuel System, Piping page 116
chapter.
The return line must be installed at a distance from the
suction line, and about 15 mm (0.6") above tank bottom
in order to prevent air entering when the engine is
stopped.
If the tanks are located lower than the level permitted
by the common rail suction height, fuel must first be
pumped up to a day tank using a hand pump or electric
pump. In this case, return fuel must be led back to the
day tank.
The fuel tanks may not be located higher than 1 m (6.6
ft) above the injectors. If the boat is not used for long
periods, the fuel system shut-off valves must be
closed.
Twin tanks must be cross-connected at the base by a
pipe equipped with shut-off taps. The lower cross-con-
nection pipe must have an inner diameter of at least 25
mm (1") so that the tanks can be filled from one side of
the boat. It is acceptable to use alternative fuel tank
shapes if these are adapted to the installation geome-
try. Regardless of the shape chosen it is important to
design the tank such that there is a lower section from
which water and sludge can be drained.
IMPORTANT!
An auxiliary fuel filter with water separator must be
installed for use with all Volvo Penta engines.
If a day tank is installed the return line must run to the
day tank.
Suitable materials for fuel tanks are stainless steel and
aluminum sheet. The material must be corrosion
resistant in a marine environment.
Installation, Fuel System
112
47704162 10-2014 © AB VOLVO PENTA
Содержание IPS650
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