Webasto Thermo 90 Manual de instalación descargar pdf (Pagina 22)

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Thermo Pro 90 Combustion Air Supply

9. Combustion Air Supply

Under no circumstances may the combustion air be

taken from areas occupied by people. The combustion air

intake opening must not point in the direction of travel.

It must be located in that it cannot become clogged with

dirt or snow and cannot suck in splashing water.

IMPORTANT!

The combustion air must be extracted using

a combustion air tube from a position that

is as cool as possible and protected from

splashing water.

The combustion air intake tube (internal diameter at least

30 mm) may be 0.5 m to 5 m (1.6 ft to 16 ft) long with

several bends totalling 360°. The minimum bending

radius is 45 mm (1.75 inches).

The combustion air intake must not be routed in the

vicinity of the exhaust discharge.

IMPORTANT!

A minimum of 0.5m of the combustion air

tube must be installed on every

application.

IMPORTANT!

If the combustion air intake tube cannot be

installed so that it slopes downwards, a

water drain hole with a diameter of 4 mm

(5/32”) is to be made at its lowest point.

If the heater is installed in the vicinity of a fuel source, the

combustion air tube must be routed in a way to prevent

fumes from entering. The openings must be splash-

proof.

A ventilation opening measuring at least 7 cm² is

required if the heater is installed in an enclosed box. The

size of the ventilation opening must be increased

accordingly if the temperature in the box exceeds the

permitted ambient temperature of the heater (see

Technical data).

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Webasto Thermo 90 Manual de instalación Pagina 22