Webasto Product N.A., Inc. 20 www.techwebasto.com
TECHNICAL DATA DBW 2010/2020/300 COOLANT HEATERS
4. TECHNICAL DATA
Unless tolerances are shown within the technical data
table, a tolerance of ± 10% applies at an ambient
temperature of +20 °C (+68 °F) and at the rated voltage
and conditions.
E
LECTRICAL COMPONENTS
Control unit, fan and circulation pump motors, solenoid
valve, ignition coil, heater cartridge for nozzle block pre-
heater and timer are designed either for 12-volt or 24-
volt operation. Temperature limiter, overheat fuse, flame
detector (photo eye), temperature control thermostat,
preheat thermostat and switches are voltage
independent components.
NOTE: The allocation of circulation pumps to
heater units must be in accordance with coolant
resistances.
F
UEL FOR DBW SERIES (DIESEL/HEATING OIL/KEROSENE):
Diesel fuel, heating oil and kerosene are suitable fuels for
the heater.
The Diesel fuel specified by the vehicle manufacturer is
suitable as fuel for the heater. Any negative effect
caused by additives is not known. When the fuel for the
heater is drawn from the vehicle’s fuel tank, the vehicle
manufacturer’s specifications concerning additives are to
be observed. Any addition of waste oil is not permitted.
When changing to cold-resistant fuels, the heater must
be operated for approx. 10 minutes to ensure that the
fuel pump, nozzle holder, nozzle and lines are filled with
the new fuel.
When using fuel from a separate fuel tank and at
temperatures below 0° C, winter Diesel fuel must be
used.
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