Webasto Air Top Evo 3900 Workshop Manual page 8

Introduction
2. / 5.3. (Part I) VEHICLE INSTALLATION REQUIRE-
MENTS
2.1. / 5.3.1. (Part I) Scope
2.1.1. / 5.3.1.1. (Part I) Subject to paragraph 2.1.2. /
5.3.1.2. (Part I) combustion heaters shall be installed
according to the requirements of this Annex.
2.1.2. / 5.3.1.2. (Part I) Vehicles of category O having
liquid fuel heaters are deemed to comply with the re-
quirements of this Annex.
2.2. / 5.3.2. (Part I) Positioning of heater
2.2.1. / 5.3.2.1. (Part I) Body sections and any other
components in the vicinity of the heater must be pro-
tected from excessive heat and the possibility of fuel
or oil contamination.
2.2.2. / 5.3.2.2. (Part I) The combustion heater shall
not constitute a risk of fire, even in the case of over-
heating. This requirement shall be deemed to be ful-
filled if the installation ensures an adequate distance
to all parts and suitable ventilation, by the use of fire
resistant materials or by the use of heat shields.
2.2.3. / 5.3.2.3. (Part I) In the case of M2 and M3 ve-
hicles, the heater must not be positioned in the pas-
senger compartment. However, an installation in an
effectively sealed envelope which also complies with
the conditions in paragraph 2.2.2. / 5.3.2.2. (Part I)
may be used.
2.2.4. / 5.3.2.4. (Part I) The label referred to in para-
graph 1.4 / Annex 7 paragraph 1.4. or a duplicate,
must be positioned so that it can be easily read when
the heater is installed in the vehicle.
2.2.5. / 5.3.2.5. (Part I) Every reasonable precaution
should be taken in positioning the heater to minimise
the risk of injury and damage to personal property.
2.3. / 5.3.3. (Part I) Fuel supply
2.3.1. / 5.3.3.1. (Part I) The fuel filler must not be sit-
uated in the passenger compartment and must be
provided with an effective cap to prevent fuel spill-
age.
2.3.2. / 5.3.3.2. (Part I) In the case of liquid fuel heat-
ers, where a supply separate to that of the vehicle is
provided, the type of fuel and its filler point must be
clearly labelled.
2.3.3. / 5.3.3.3. (Part I) A notice, indicating that the
heater must be shut down before refuelling, must be
affixed to the fuelling point. In addition a suitable in-
struction must be included in the manufacturer's op-
erating manual.
2.4. / 5.3.4. (Part I) Exhaust system
2.4.1. / 5.3.4.1. (Part I) The exhaust outlet must be lo-
cated so as to prevent emissions from entering the
vehicle through ventilators, heated air inlets or open-
ing windows.
102
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Air Top Evo 3900/5500
2.5. / 5.3.5. (Part I) Combustion air inlet
2.5.1. / 5.3.5.1. (Part I) The air for the combustion
chamber of the heater must not be drawn from the
passenger compartment of the vehicle.
2.5.2. / 5.3.5.2. (Part I) The air inlet must be so posi-
tioned or guarded that blocking by rubbish or lug-
gage is unlikely.
2.6. / 5.3.6. (Part I) Heating air inlet
2.6.1. / 5.3.6.1. (Part I) The heating air supply may be
fresh or recirculated 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.
2.6.2. / 5.3.6.2. (Part I) The inlet duct must be pro-
tected by mesh or other suitable means.
2.7. / 5.3.7. (Part I) Heating air outlet
2.7.1. / 5.3.7.1. (Part I) 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.
2.7.2. / 5.3.7.2. (Part I) The air outlet must be so po-
sitioned or guarded that blocking by rubbish or lug-
gage is unlikely.
2.8. / 5.3.8. (Part I) Automatic control of the
heating system
2.8. / 5.3.8.1. (Part I) The heating system must be
switched off automatically and the supply of fuel
must be stopped within five seconds when the vehi-
cle's engine stops running. If a manual device is al-
ready activated, the heating system can stay in oper-
ation.
End of extract.