Cold Air And Hot Air; General Information - Webasto Air Top Evo 40 Einbauanweisung

Cold air and hot air

5 Cold air and hot air
5.1.

General Information

The heating air supply may be fresh or recirculated air and
must be drawn from a clean area not likely to be contaminat-
ed by exhaust fumes emitted either by the propulsion engine,
the combustion heater or any other vehicle source.
(Requirement from ECE-R 122, Point 5.3.6.1.)
Both recirculation and fresh air modes are possible.
NOTE:
The heater must not be integrated into the vehicle's air
system.
NOTE:
The direct intake of hot air must be avoided (see Fig. 7).
A short-circuit in the air flow is not permitted.
Temperature control
The control unit is fitted with an internal room temperature sensor.
Optionally an external temperature sensor can also be used. Depending on
the intake temperature and the nominal temperature which has been set,
the controller regulates the heater within the corresponding heating capacity
range. The heating output is regulated so that after the preselected cabin
temperature (nominal temperature) has been quickly obtained, it is also
maintained at the preselected value.
60
Air Top Evo 40 / Air Top Evo 55
Fig. 7 Cold air inlet and hot air outlet
Fresh air mode
During fresh air mode, ensure that the cold air is drawn from an area which
is protected from splashing water and spray. The fresh air inlet must be
installed above the permissible water passage height for the respective
vehicle.
NOTE:
During fresh air mode, an external temperature sensor must
be installed in the cabin to be heated.
Assembly in enclosed boxes
To prevent heat accumulation and subsequent overheating, ensure that hot
air cannot directly enter the enclosed boxes.