Webasto Air Top 2000 ST B Installation Instructions Manual page 16

Hot air system
IMPORTANT
If you use the heater without a hot air inlet hose, the inlet grille supplied
with the heater must be used at all times.
NOTE:
The installation must be checked for:
– Air short circuit between the vehicle's heating system and the heater air
inlet
– Air short circuit between the heater's air inlet and the heater's air outlet
(Figure 6)
Fig. 7: Hot air inlet with inlet grille
If you use an installation box the air vent must be sealed in such a way that
no hot air can get into the installation box.
6.1. External temperature sensor
For fresh air mode an external temperature sensor must be fitted in the ap-
propriate zone.
50
6.1.1. To install the external temperature sensor
The external temperature sensor must be installed at medium height in the
passenger cabin on vertical surfaces if possible in the area that requires
heating.
The temperature sensor must not
– be in the direct current of hot air (from the vehicle's own heating system
or the hot air heater).
– by close to heat sources (for example the vehicle's own heating system).
– be placed in direct sunlight (for example on the dashboard).
– be installed behind curtains or the like.
Air Top 2000 ST