Hot Air System; External Temperature Sensor - Webasto Air Top 2000 B Notice De Montage

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Hot air system

7 Hot air system
NOTE:
The heater must not be integrated into the vehicle's air system.
The air heater can only be used in air circulation mode.
A temperature sensor is installed in the heater on the hot air intake side,
which operates the heater in the appropriate heat output range in
conjunction with the control element depending on the intake
temperatures and the position of the setpoint generator. The heat output
is set such that after the selected interior temperature has been reached
quickly, it is then kept at this selected value.
Minimum internal diameter of the hot air line 55 mm (nominal diameter
60 mm).
NOTE:
Only materials that can withstand temperatures of at least 130°C may
be used for the hot air line. The hot air opening is to be positioned in
such a way that the air is not blown on to any parts that cannot withstand
the heat.
IMPORTANT
In vehicles used to convey passengers the air output opening is to be
positioned so that nobody can be located in front of the air output.
Maximum pressure drop between the inlet and outlet side of the hot air
line: 1.0 hPa
1 hPa corresponds to 1 mbar corresponds to 10 mm WC.
If this value is exceeded the temperature limiter will trip. The hot air hose
must be secured at its connection points.
If the heater is used in air circulation mode, it may be used without any
accessories for controlling the hot air (a short circuit of the hot air current
must be avoided).
48
Fig. 8: Hot air inlet and hot air outlet
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 8).
– Adequate hot air intake facility (take the air intake from the cool area
of the cabin, for example for installations under a bench).
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.
7.1.

External temperature sensor

We recommend that you install an external temperature sensor if the
heater is installed in an installation box or in places with poor ventilation
(for example under benches). This will prevent the heater having very
short control times.
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Air Top 2000