Webasto HL 90 Installation Instructions Manual page 4

5.3.3 Fuel supply
5.3.3.1 The fuel filler must not be situated in the passenger compartment
and must be provided with an effective cap to prevent fuel spillage.
5.3.3.2 In the case of liquid fuel heaters, where a supply separate from that
of the vehicle is provided, the type of fuel and its filler point must be clearly
labelled.
5.3.3.3 A notice, indicating that the heater must be shut down before refu-
elling, must be affixed to the fuelling point. In addition a suitable instruction
must be included in the manufacturer's operating manual.
5.3.4 Exhaust system
5.3.4.1 The exhaust outlet must be located so as to prevent emissions from
entering the vehicle through ventilators, heated air inlets or opening win-
dows.
5.3.5 Combustion air inlet
5.3.5.1 The air for the combustion chamber of the heater must not be
drawn from the passenger compartment of the vehicle.
5.3.5.2 The air inlet must be so positioned or guarded that blocking by rub-
bish or luggage is unlikely.
5.3.6 Heating air inlet
5.3.6.1 The heating air supply may be fresh or re-circulated air and must be
drawn from a clean area not likely to be contaminated by exhaust fumes
emitted either by the propulsion engine, the combustion heater or any other
vehicle source.
5.3.6.2 The inlet duct must be protected by mesh or other suitable means.
5.3.7 Heating air outlet
5.3.7.1 Any ducting used to route the hot air through the vehicle must be
so positioned or protected that no injury or damage could be caused if it
were to be touched.
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5.3.7.2 The air outlet must be so positioned or guarded that blocking by
rubbish or luggage is unlikely.
5.3.8 Automatic control of the heating system
5.3.8.1 The heating system must be switched off automatically and the sup-
ply of fuel must be stopped within five seconds when the vehicle's engine
stops running. If a manual device is already activated, the heating system
can stay in operation.
ANNEX 7
ADDITIONAL REQUIREMENTS FOR COMBUSTION HEATERS
7 Warning light
7.1 A clearly visible tell-tale in the operator's field of view shall inform when
the combustion heater is switched on or off.
End of extract.
HL 90
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