Webasto Air Top 2000 ST B Installation Instructions Manual page 9

Installation
The heater must be installed in such a way that no water can ingress into
it if the vehicle travels through a water hazard for which that vehicle is
licensed.
The openings for the combustion air inlet port, the exhaust outlet port
and the fuel pipe must be sealed if the heater is installed in the interior.
The seal designed and supplied for this purpose must be used (see
Figure 4).
Fig. 2: Recommended installation positions for diesel heaters
We recommend that petrol heaters be installed with the exhaust port
pointing vertically downwards.
3.3. To install the heater
The M6 nuts must be tightened with a torque of 6 Nm +1 Nm for installing
the Air Top 2000 ST heater.
The installation dimensions and space requirement for service access
are shown in the installation drawing (Figure 1). The specified horizontal
and axial angles must not be exceeded (Figure 2).
A seal (Figure 4) must be fitted between the heater and the vehicle body.
This seal must be replaced each time the heater is installed. The
support area for the heater foot must be flat.
44
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18
Fig. 3: Hole pattern
Fig. 4: Seal
A special tools can be purchased from Webasto to drill the holes and, if
necessary, smooth the support area. The seal can compensate for
unevenness of max. 1 mm.
Air Top 2000 ST
ø26
ø7,5
55