Combustion Air Supply - Webasto Air Top Evo 40 Einbauanweisung

Combustion air
7

Combustion air supply

7.1. General Information
The air for the combustion chamber of the heater must not
be drawn from the passenger compartment of the vehicle.
(Requirement from ECE-R 122, Point 5.3.5.1.).
The air inlet must be so positioned or guarded that blocking
by rubbish or luggage is unlikely.
(Requirement from ECE-R 122, Point 5.3.5.2.).
Fig. 16 Preventing siphons
Install the combustion air intake pipe falling away from the heater.

 If this is not possible, a water drain hole with a diameter of 4 mm must be
made at its lowest point.
70
Air Top Evo 40 / Air Top Evo 55
Fig. 17 Combustion air intake pipe not pointing in the direction of
travel
 Lay the opening of the pipe in such a way that it does not point in the di-
rection of travel.
Fig. 18 Preventing contamination
 Install the pipe opening so that clogging due to dirt is avoided.