Webasto Product N.A., Inc. 22 www.techwebasto.com
TECHNICAL DATA DBW 2010/2020/300 COOLANT HEATERS
4.2 TECHNICAL DATA OF THE CIRCULATING PUMPS
*Choice of circulating pump depends on resistance of coolant circuit.
4.3 PERMISSIBLE EXTENSION OF THE CONNECTIONS
*Other dimensions upon request.
**Heaters built until model number DBW 2020.31 and DBW 300.10 inclusively.
CIRCULATING PUMP U 4810 U 4846 U 4814 U 4851 MP Pump
FLOW RATE l/h (gal/h – US) 1600 (7.0)
against 0.15
bar
1650 (7.26)
against 0.15
bar
5200 (22.9)
against 0.2 bar
6000 (26.4)
against 0.4 bar
3406 - 4542
(15 - 20)
NOMINAL VOLTAGE 12 or 24 12 or 24 12 or 24 24 12
OPERATING VOLTAGE 10-14 or
20-28
10-14 or
20-28
10-14 or
20-28
20-28 10-14
POWER CONSUMPTION Watt 25 30 104 209 72
DIMENSIONS L
mm (inch) W
H
166 (6.5)
94 (3.7)
77 (3.0)
180 (7.0)
74 (2.9)
112 (4.4)
248 (9.76)
100 (3.9)
106 (4.17)
285 (11.22)
115 (4.53)
118 (4.64)
214 (8.42)
106 (4.16)
106 (4.16)
WEIGHT kg (lb) 0.8 (1.8) 22 (48.5) 2.1 (4.6) 2.8 (6.17) 2.5 (5.5)
RECOMMENDED FOR HEATER* DBW 2010 DBW2010 DBW 2020
DBW 300
DBW 2020
DBW 300
Scholastic
Heater™
HEATER DBW 2010 DBW 2020 DBW 300
Scholastic
Series
FUEL LINE:
internal diameter mm (inch)
maximum length m (ft)
suction head m (ft)
6* (0.25)
10 (33)
2 (6.6)
6* (0.25)
10 (33)
2 (6.6)
6* (0.25)
10 (33)
2 (6.6)
6* (0.25)
10 (33)
2 (6.6)
COMBUSTION AIR INTAKE PIPE:
internal diameter mm (inch)
maximum length m (ft)
maximum degree of bends total m (ft)
80 (3.2)
5 (16.5)
270°
80 (3.2)
5 (16.5)
270°
80 (3.2)
5 (16.5)
270°
80 (3.2)
5 (16.5)
270°
EXHAUST PIPE:
internal diameter mm (inch)
maximum length m (ft)
maximum degree of bends total m (ft)
38 (1.5)
5 (16.5)
270°
70 or 80**
(2.75 or 3.2**)
5 (16.5)
270°
70 or 80**
(2.75 or 3.2**)
5 (16.5)
270°
38 (1.5)
5 (16.5)
270°
HOSE CONNECTIONS - INLET/OUTLET
outside diameter mm (inch) 18 (0.75) 38 (1.5) 38 (1.5) 25 (1.0)
TEMPERATURE DIFFERENCE BETWEEN INLET
and OUTLET (ΔΤ) °C (°F) 10 (18) 10 (18) 10 (18) 10 (18)
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