Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 7.The Circuit Diagrams
703
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
K2 Relay Heating device engine
K3 Relay Lamp, work of the
regulation thermostat
K4 Relay Induction bobbin
Poz. Tanım Not A B C D
K5 Röle Manyetik ventil; alev
denetçisi
K7 Relay Fan of the vehicle
heating
M1 Motor (okunamadı)
M2 Motor Engine of the heating
device
M3 Motor Fan of the vehicle
R Flame
regulator
Photo-resistance
polarity makes no
difference
S1 Switch For heating ON-OFF
S3 Switch on
the water
valve
Contact is on while
water valve is open
S4 Switch For ON-OFF, same
circulation pump
S6 Switch Fan of the vehicle
X1 Socket
connection
With 2 pins
X2 Socket
connection
With 1 pin
X3 Socket
connection
With 2 pins
Y1 Magnetic
valve
Polarity makes no
difference
A
B
C
D
Installed in the heating device
The part delivered without connection
Only in case of need
Available in the vehicle
Inseparable match
According to the scope of the delivery or the type
Figure 701 Automatic circuit, DBW 2010 equipped with the control device 1553, 12 and 24 Volt (page 2 / 2)
Cable colors
bl
Br
ge
gn
gr
or
rt
sw
vi
Blue
Brown
Yellow
Green
Grey
Orange
Red
Black
Violet
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