Planar 2D-24 Installation Instructions Manual page 27

3.9.4 Fuel Line Installation.
Installation of the fuel line between the fuel pickup
and the heater is shown in Fig.28. Sections of the fuel line
are connected by means of couplings.
If couplings are not cut off and are delivered as one
rubber sleeve, it is necessary to cut it into appr. lengths of
50-70mm.
Proper connection of two fuel tubes with a coupling is
shown in Fig. 29.
Cutting of couplings and fuel tubes should be
done only with a sharp knife. Interfaces shall not
be crushed and must be free of burrs or narrowing
of the flow cross section.
3.9.5 Heater Fuel Intake with T-Fitting.
Fuel intake from fuel return line from engine to the fuel
tank can be carried out using a T-fitting. The fuel return line
must be with no pressure with its end at the bottom of the fuel
tank. Fig. 30 shows installation of the T-fitting.
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