Technical data

Scope of Application of the Air Heaters
The Webasto Air Top 2000 S air heaters are designed to
provide the following features:
- heating the vehicle’s saloon,
- defrosting the vehicle’s windows.
The heaters operate independently of the vehicle engine
and are connected to the fuel tank and the electrical sys-
tem of the vehicle.
They can be used in vehicles with water-cooled or air-
cooled engines.
Installation
CAUTION:
The legal provisions 29 and 30 relating to the installation
are to be adhered to.
It is not permitted to operate the heater without control unit
cover (results in overheating of the heater).
Installation Details for Air Top 2000 S
NOTE:
The different vehicle-specific installation conditions should
be taken into account.
Installation Location
The heater should be installed in the vehicle’s interior (with
the exception of buses, see Legal Provisions).
If the heater is installed in an installation housing, such
housing must be purchased from Webasto and must be of
a Webasto-approved design.
If installed in the vehicle’s interior, the lead-through open-
ings for combustion air inlet, exhaust gas outlet and fuel
pipe must be splash-water protected.
For this purpose, the special gasket supplied with the
heater must be used (see Fig. 4). The gasket must be
renewed prior to each re-installation.
Mounting the Heater
When mounting the Air Top 2000 S heater, the M 6 nuts
must be tightened to a torque of 6 Nm +1 Nm.
The mounting dimensions as well as the space required
for the performance of servicing work are shown in the in-
stallation drawing (Fig. 1). The specified horizontal and
axial angles of inclination must not be exceeded (Fig. 2).
We recommend installing petrol-operated heaters so that
the exhaust gas pipe points vertically down.
NOTE:
Other installation positions may cause increased wear to
the burner.
6
4
3
2
1
7
5
8
5 Fuel inlet
6 Space required for heating air inlet
7 Space required for removal of heater
8 Cable outlet (optionally on the right or left)
1 Heating air inlet
2 Heating air outlet
3 Combustion air inlet
4 Exhaust gas outlet
Fig. 1: Dimensions of the Heater
Fig. 2: Recommended installation position for
diesel-operated heaters
Air Top 2000 S
3