Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 7.The Circuit Diagrams
709
Pos. Definition Note
A1 Heating device Without chassis
A2 Control device SG 1553
B1 Flame regulator Pay attention to the pole
connection
B2 Heat sensor Polarity connection makes
no difference
B3 Fan thermostat At water circuit for the
vehicle fan (ON – OFF)
F1 Fuse A8 (for all types) Car fuse complying with
DIN 72581
F2 Fuse 8 A for all 24 V types +
DBW 2010 (12 V)
Car fuse complying with
DIN 72581
F3 Fuse Car fuse complying with
DIN 72581
F4 Fuse Car fuse complying with
DIN 72581
F5 Thermal fuse Pole connection makes no
difference
G Battery
H1 Illuminated diode, green Function indicator (at Pos.
P)
H2 Illuminated diode, yellow Indicator for ready status
(at Pos. P)
H3 Lamps Symbol illumination (at
Pos. P)
H4 Illuminated diode, green Function indicator (when
S1 is used)
K1 Relay (at pos. A2) For the circulation pump
K2 Relay (at pos. A2) For the burner fan
K3 Relay (at pos. A2) For the induction bobbin
K4 Relay (at pos. A2) For the magnetic valve
K5 Relay It is only necessary at
negative when there is
battery switch
K6 Relay
K7 Relay, for the vehicle fan It is only necessary with B3
Pos. Definition Note
M2 Motor Burner fan
M3 Motor Vehicle fan
P Program timer (digital) For programmed work
S1 Switch (ON-OFF) For ON-OFF of the heating device
S2 Switch Battery switch
S3 Switch At the water faucet
S4 Switch Economy mode
S5 Switch (for the vehicle
fan)
Alternative to Pos. S6
S6 Switch (for the vehicle
fan)
Alternative to Pos. S5
S7 Switch Separate circulation pump, ON-OFF
U Induction bobbin With the ignition electrodes
V1 Diode Control device at Pos. A2
W Cable bunch Control device – heating device
X1 Socket connection with
8 pins
To Pos. P
X2 Socket connection with
2 pins
X3 Socket connection With 2 pins, at Pos. M2
Y Magnetic valve Polarity makes no difference
1
2
3
4
5
6
Program timer P
Positive connection at 9 = continuous work at immediate
heating
Positive connection not at 9 = heating period 1 hour
Clamp 75, if available, in the vehicle direction, and clamp 75 if
not available
Vehicle illumination (clamp 58) Relay K5 and K6 with the
hatched lines only if the battery switch is used
Alternative
Vehicle clamp 15
Figure 704 Automatic circuit, DBW 2010/2020/300/350 equipped with the control device 1563, 12 and 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-section
< 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