Webastoto HL 90 User Manual download pdf (Page 39)

HL 90 Hot air system

5 Hot air system

Integrating the heater into an existing air system belonging to the vehicle

requires careful harmonisation and is not recommended.

The air heater can be used both in fresh air mode for heating a

passenger compartment and a driver’s cab as well as in recirculated air/

fresh air mode for vehicle bodies. If the air heater is installed in a vehicle

body for use in recirculated air mode, a sticker with the following content

must be affixed to the inside of the entrance door:

“No-one is allowed to remain in the enclosed loadspace when the heater

is switched on!”

Due to the risk of poisoning and suffocation, the intake opening for the

hot air system must be arranged so that exhaust gases from the

vehicle’s engine and the heater itself cannot be sucked in under normal

operating conditions. This also applies even if a blower is used on the

heater output side, e.g. by sucking in air from the engine compartment.

The intake temperature of the heating air must not exceed +30 °C.

Minimum internal diameter of the hot air line:

100 mm

Maximum air pressure differential between the intake and outlet side of

the hot air line:

2.5 mbar (25 mm water column)

If these values are exceeded the temperature limiter will trip.

The hot air hose must be secured at its connection points.

When used in recirculated air mode, measures must be taken to prevent

the heater sucking in its own heated air.

HL90 EA_de_en_fr.book Seite 35 Freitag, 8. Oktober 2004 12:34 12

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Webastoto HL 90 User Manual Page 39