Webasto Air Top 2000 ST B Installation Instructions Manual page 6

Air Top 2000 ST
(Extract from Directive 2001/56/EC Annex IX)
3. Technical specifications for heater units for installation in
dangerous goods transporters (Annex 9)
3.1. General (EX/II, EX/III, AT, FL and OX vehicles)
3.1.1. The combustion heaters and their exhaust gas routing shall be
designed, located, protected or covered so as to prevent any
unacceptable risk of heating or ignition of the load. This requirement
shall be considered as fulfilled if the fuel tank and the exhaust system of
the appliance conform to the provisions set out in the points 3.1.1.1 and
3.1.1.2. Compliance with those provisions shall be verified on the
completed vehicle.
3.1.1.1. Any fuel tanks for supplying the appliance shall meet the
following requirements:
a) in the event of any leakage, the fuel shall drain to the ground
without coming into contact with hot parts of the vehicle or the
load;
b) fuel tanks containing petrol shall be equipped with an
effective flame trap at the filler opening or with a closure
enabling the opening to be kept hermetically sealed.
3.1.1.2. The exhaust system as well as the exhaust pipes shall be so
directed or protected to avoid any danger to the load through heating or
ignition. Parts of the exhaust system situated directly below the fuel tank
(diesel) shall have a clearance of at least 100 mm or be protected by a
thermal shield.
3.1.2. The combustion heater shall be switched on manually.
Programming devices shall be prohibited.
Statutory regulations governing installation
3.2. EX/II and EX/III vehicles
Combustion heaters using gaseous fuels are not permitted.
3.3. FL vehicles
3.3.1. The combustion heaters shall be put out of operation by at least
the following methods:
a) intentional manual switching off from the driver's cab;
b) stopping of the vehicle engine; in this case the heating device
may be restarted manually by the driver;
c) start-up of a feed pump on the motor vehicle for the
dangerous goods carried.
41