Fuel Lines; Routing - Webasto DUAL TOP RHA 100 Installation Instructions Manual

Dual Top
Hole pattern
Fig. 23: Webasto fuel extractor
Take care of installation instructions of each type fuel extractor.

12.4. Fuel lines

Only steel, copper and plastic lines of plasticised, light and
temperature-stabilized PA 11 or PA 12 (e.g. Mecanyl RWTL) pursuant to
DIN 73378 may be used as fuel lines. Since the lines normally cannot be
routed with a constant rising gradient, the internal diameter shall not
exceed 2 mm. In larger fuel lines air or gas bubbles would accumulate and
cause malfunctions.
12.4.1.
The lines should be routed upwards from the fuel pump to the heater to
≥ 25 mm
facilitate automatic bleeding.
Avoid passing or crossing of hot areas (e.g. crossing of exhaust line) at a
distance of less than 100 mm without using thermal shields.
Fuel lines must be tightened to the vehicle's chassis to prevent sagging.
They must be installed in such a way that they cannot be damaged by
flying road chippings or high temperatures (exhaust line). The fuel lines
must be secured at the connections using hose clips to prevent slipping.

Routing

Fuel supply
27