Exhaust System; Combustion Air Inlet; Hot Air Inlet; Hot Air Outlet - Webasto Air Top Evo 40 Installation & Operation Manual

Air Top Evo 40/55
2.3.5 The fuel tank must be equipped with a vent cap or ventilated in another way (vent line).
2.3.6 When a separate fuel supply is used the fuel filler neck must not be located in the passenger compartment and
must have a tightly fitting cap to prevent any fuel leaks.
2.3.7 The type of fuel and the fuel filler neck must be clearly identified for liquid fuel heaters which have a fuel
supply separate from the vehicle fuel supply.
2.3.8 A label must be affixed to the fuel filler neck warning that the heater must be switched off before refuelling.
An identical warning must also be included in the manufacturer's operating instructions.
2.4

Exhaust System

2.4.1 The exhaust outlet must be positioned in such a way that exhaust fumes cannot get into the interior of the
vehicle through ventilation devices, hot-air inlets or open windows. Also note that exhaust should always point away
from the direction of travel.
2.4.2 Do not route exhaust components within 100 mm (4 inches) of flammable materials such as fuel system
components, polyurethane or similar foam insulation, styene sheet installation, wood and paper products, carpet,
glycol reservoirs, coolant lines, brake lines, electrical wiring, etc.
2.5

Combustion Air Inlet

2.5.1 The air for the combustion chamber of the heater must not be extracted from the passenger cabin of the
vehicle.
2.5.2 The air inlet must be positioned in such a way that it cannot be obstructed by other objects.
2.6

Hot Air Inlet

2.6.1 The supply of heating air must consist of either fresh air or recirculated air and must be taken from a clean area
which cannot be contaminated by exhaust fumes from the engine, the internal combustion heater or any other source
in the vehicle.
2.6.2 The inlet line must be protected by a grating or other suitable means.
2.7

Hot Air Outlet

CAUTION
2.7.1 Hot air lines within the vehicle must be positioned or protected in such a way as to exclude all risk of injury or
damage caused by direct contact.
2.7.2 The air outlet must be positioned or protected so that it cannot be obstructed by other objects.
2.8

Automatic Control of the Heating System

When the engine stops, the heating system must cut out automatically and the fuel supply must be stopped within 5
seconds.
The heating system may remain in operation if a manual unit has already been activated.
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Regulation for Installation in the Vehicle
When heater is in use, the surface of the hot air outlet may become hot to the
touch. Contact with skin may cause burns.
7 Webasto Thermo & Comfort N.A., Inc.