Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 7.The Circuit Diagrams
705
Pos. Definition Note A B C D
1 Heating device Without chassis
2 Control device SG 1553
4 Induction
bobbin
5 Thermostat Regulation thermostat
(internal)
7 Thermostat Fan thermostat
8 Thermostat Temperature constraining
thermostat
10 Ignition
electrodes
61.3 Anti-parasite set
(2 x)
Wireless parasite prevention
F1 Thermal fuse Polarity makes no difference
F2 Fuse 8 A Car fuse complying with DIN
72581
F3 Fuse 8 A Car fuse complying with DIN
72581
F4 Fuse Car fuse complying with DIN
72581
F5 Fuse Car fuse complying with DIN
72581
H1 Lamp, green Function indicator
H2 Lamp, for the
circulation
pump
If controlled over S4
K1 Relay Circulation pump, negative of
the heating device
K1 Relay Circulation pump,
negative of the heating
device
K2 Relay Heating device engine
K3 Relay Lamp, work of the
regulation thermostat
Pos. Definition Note A B C D
1 Heating
device
Without chassis
2 Control
device
SG 1553
4 Induction
bobbin
5 Thermostat Regulation thermostat
(internal)
8 Thermostat Temperature constraining
thermostat
10 Ignition
electrodes
12 Thermostat Regulation thermostat
(external)
61.3 Anti-parasite
set (2 x)
Wireless parasite
prevention
F1 Thermal fuse Polarity makes no
difference
F2 Fuse 8 A Car fuse complying with
DIN 72581
A
B
C
D
1
Installed in the heating device
Part delivered without the connection
Only in case of need
Available in the vehicle
Inseparable match
In accordance with the scope of the delivery or the type
Be careful that the chassis connection is good!
Figure 702 Automatic circuit, DBW 2020/300 equipped with the control device 1553, 24 Volt (page 2 / 2)
Cable colors
bl
Br
ge
gn
gr
or
rt
sw
vi
ws
Blue
Brown
Yellow
Green
Grey
Orange
Red
Black
Violet
White
Cable cross-sections
< 7,5 m 7,5 - 15 m
0,75 mm2 1,5 mm2
1,0 mm2 1,5 mm2
1,5 mm2 2,5 mm2
2,5 mm2 4,0 mm2
4,0 mm2 6,0 mm2