Technical Data
Unless tolerances are shown within the technical data
table, a tolerance of ± 10% applies at an ambient tempera-
ture of +20°C and at the rated voltage.
Fuel for BBW 46 (Petrol):
The type of fuel specified by the vehicle manufacturer is
suitable as fuel for the heater.
Fuel for DBW 46 (Diesel):
The diesel fuel specified by the vehicle manufacturer is
suitable as fuel for the heater. When changing to cold-re-
sistant fuels, the heater must be operated for about 15
minutes to ensure that the fuel line and fuel pump are also
filled with the new fuel.
Any negative effect caused by additives is not known.
Heater Operating
Mode
BBW 46 DBW 46
Mark of approval
~
S 185
~
S 186
Type water heater with vaporising burner
Heat output full load
part load
4.6 kW
2.3 kW
Fuel petrol diesel
Fuel consumption full load
part load
0.63 l/h
0.23 l/h
0.58 l/h
0.29 l/h
Rated voltage 12 or 24 volts
Operating voltage range 10 ... 14 volts or 20 ... 28 volts
Rated power consumption without
circulating pump (without vehicle fan)
full load
part load
44 W
33 W
Max. permissible ambient temperature:
Heater: - operation
- storage
Control unit: - operation
- storage
Metering pump: - operation
- storage
-40° ... + 80°C
-40° ... +100°C
-40° ... + 75°C
-40° ... + 85°C
-40° ... + 20°C
-40° ... + 85°C
Max. allowable working pressure (heat carrier) 0.4 ... 2.0 bar
Filling capacity of heat exchanger 0.25 l
Min. amount to be maintained in the circuit 4.00 l
Volume flow of circulating pump against 0.1 bar 950 l/h
CO
2
content in exhaust gas (perm. funct. range) 10 ... 10.5 % by vol.
Dimensions of heater length 277 mm
width 148 mm
height 197 mm
Weight incl. control unit and circulating pump 3.9 kg
BBW 46 / DBW 46
14
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