Circuit Diagrams - Webasto BBW 46 Installation Instructions Manual

BBW 46 / DBW 46
Wire Cross-Sections
< 7.5 m 7.5 - 15 m
2 2
0.5 mm 0.75 mm
2 2
0.75 mm 1.5 mm
2 2
1.5 mm 2.5 mm
2 2
2.5 mm 4.0 mm
2 2
4.0 mm 6.0 mm
12
Wire Colours
Pos. Designation
A1 Heater
bl blue
br brown
A2 Electronic control unit
ge yellow
A4 Telestart receiver
gn green
B1 Flame detector
gr grey
B2 Temperature sensor
or orange
rt red B3 Room thermostat
sw black
E Glow plug
vi violet
F1 Fuse 16A
ws white
F2 Fuse 8A
F3 Temperature fuse
F4 Fuse 16A
K6 Relay
K7 Relay
M1 Motor
M2 Motor
M3 Motor
P Timer, digital
R1 Resistor
R2 Resistor
S1 Switch for vehicle fan
S2 Switch for vehicle fan
S3 Switch for circulating pump
V3 Diode (in pos. A2)
V108 Transistor (in pos. A2)
W1 Cable harness
X1 Connector 12-pole
X2 Connector 2-pole
X4 Connector 1-pole
Y Metering pump
Remarks
BBW 46 / DBW 46
SG 1560
T 6
for vehicle fan on/off
motor vehicle fuse DIN 72581
motor vehicle fuse DIN 72581
motor vehicle fuse DIN 72581
for vehicle fan
for Telestart receiver
combustion air fan
circulating pump
vehicle fan
for presetting operating time
for part-load operation
only required for 12-volt glow plugs in a 24-volt heater
S1 or S2 depending on vehicle
S1 or S2 depending on vehicle
for separate activation