Webasto Air Top 2000 ST B Installation Instructions Manual page 20

Fuel supply
7.4.1. Connecting two pipes with a hose
The correct procedure for connecting fuel lines with hosing is shown in Fig-
ure 13.
Ensure that there are no leaks.
Correct
Clip
Wrong
Bubble
Fig. 13: Pipe / hose connection
7.5. Metering pump
The metering pump is a combined delivery, metering and shut-off system
and is subject to certain installation criteria (see Figures 8, 14 and 15).
7.5.1. Installation location
The metering pump must be installed in a cool place as close as possible to
the tank (see Figure 8). The maximum ambient temperature must not ex-
ceed +20 °C for petrol heaters at any time during operation.
The metering pump and fuel lines must not be installed within range of the
radiated heat from hot vehicle parts. A heat shield must be used if neces-
sary.
54
Air Top 2000 ST 12 V - petrol
Fig. 14: Metering pump DP 2 with damper
Bubble
Air Top 2000 ST
12 V and 24 V - diesel
Fig. 15: Metering pump DP 30.2
Preferably
15° - 90°
Metering
pump
Installation position
Horizontal installation
Installation position
Air Top 2000 ST
Installation posi-
tion of damper
Installation
position of
damper