Combustion Air Supply - Webasto Thermo Top C-B Installation Instructions Manual

Combustion air supply

9 Combustion air supply
The intake opening for combustion air must be located so that it cannot
become clogged with dirt. It must not point in the direction of travel.
An intake line is required for combustion air.
The withdrawal point for the combustion air must be located in a cool
(temperature ≤ 20 °C) place where it is protected from splashing water
and above the fording line of the vehicle.
Under no circumstances may the combustion air be taken from areas
occupied by people. A ventilation opening measuring at least 3 cm² is
required if the heater is installed in an enclosed box.
If the heater is installed in a common installation space near the vehicle
tank, the combustion air must be taken in from the outside and the
exhaust gas discharged into the atmosphere. The openings must be
splash-proof.
9.1. Air intake silencer
The air intake silencer must be installed in a position between 0° and 90°
pointing downwards.
Installation instructions
Connect the slotted side (approx. 18 mm) of the combustion air intake
line, max. 400 mm long, to the air intake port of the heater and secure it
with the hose clip supplied.
Turn the air intake silencer as far as possible into the unslotted end of
the air intake line (it need not be secured additionally by means of a
hose clip).
IMPORTANT:
Ensure an adequate distance from the exhaust system.
44
Thermo Top C / Thermo Top E
Fig. 12: Air intake silencer
Installation position
Depending on the installation situation, the air intake silencer must be
secured at a suitable point with the enclosed mounting clip or cable ties.
9.1.1. Securing the air intake silencer with the mounting clip
– Drill a hole dia. 6.5 mm at a suitable point.
– Press the mounting clip into the hole.
– Fit the air intake silencer in the mounting clip.
0-90° 0-90°