Webasto Product N.A., Inc. 8 www.techwebasto.com
INTRODUCTION DBW 2010/2020/300 COOLANT HEATERS
In the vicinity of the water heater a temperature of 85° C
(185 °F) must not be exceeded under any circumstances
(e.g. during body paint work).
A violation of this temperature limit may cause
permanent damage to the electronics.
When checking the cooling water level proceed in
accordance with the vehicle manufacturer’s instructions.
The water in the heating circuit of the heater must
contain a minimum of 20% of a quality brand anti-
freeze.
Additives in the heating circuit must not affect metals,
plastics and rubber and must leave no deposits.
The opening pressure in the vehicle cooling system -
normally indicated on the radiator filler cap - must be
between 0.4 and 2.0 bar above operating pressure (also
applicable to separate heating circuits).
1.6 LEGAL PROVISIONS FOR INSTALLATION
DBW series heaters have been type-tested and approved
in accordance with EG Directives 72/245/EWG (EMV) and
2001/56/EG (heater) with the following EG permit
numbers:
e1*2001/56*0006*xx
Installation is governed above all by the provisions in
Annex VII of Directive 2001/56/EC.
NOTE: The provisions of these Directives are
binding within the territory governed by EU
Directive 70/156/EEC and should similarly be
observed in countries without specific
regulations.
(Extract from Directive 2001/56/EC Annex VII)
“1.7.1. A clearly visible indicator within the user's field of
vision must show when the heater is switched On or
Off.”
NOTE: For further notes and provisions
relating to the installation of the heater in
vehicles, refer to the installation instructions.
IMPORTANT!
Failure to follow the installation instructions and
the notes contained therein will lead to all liability
being refused by Webasto The same applies if
repairs are carried out incorrectly or with the use of
parts other than genuine spare parts. This will
result in the invalidation of the type approval for
the heater and therefore of its homologation / EC
type licence.
Installation Instructions for Webasto fuel tanks for the
fuel supply of water heaters in vehicles:
• in vehicles the installation is not permitted in the
passengers’ or driver’s compartment.
• the fuel filler neck must not be located in the
passengers’ or driver’s compartment of any vehicle.
• fuel containers must either be equipped with a vent
cap or any other type of ventilation (vent line).
Only vent caps in accordance with DIN 73400 may be
used.
All fuel containers offered in the Webasto Accessories
Catalogue are suitable for a maximum operating pressure
of 0.15 bar overpressure.
All fuel containers offered in the Webasto Accessories
Catalogue are subjected during manufacture to
individual pressure testing with at least 0.3 bar
overpressure.
• The operational state of the heater, i.e. at least an
indication "on" or "off" must be easily and clearly
visible.
For heaters in vehicles not ruled by the EU Directive but
other regulations, the acceptance by the relevant
authority is required as applicable.
1.7 CORRECTIONS AND IMPROVEMENTS
Deficiencies, improvements, or proposals for correction
of this workshop manual are to be mailed to:
W
EBASTO PRODUCT NORTH AMERICA, INC.
T
ECHNICAL DOCUMENTATION GROUP
15083 NORTH ROAD
FENTON MI 48430
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