Circuit Diagrams - Webasto Thermo 90 ST WDT Installation Instructions Manual

Electrical system
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Circuit diagrams

The circuit diagrams show the possible circuits:
– Circuit diagram for Thermo 90 ST WDT, parking heater with On/Off
switch: Fig. 16
– Circuit diagram for Thermo 90 ST WDT, parking heater with standard
timer: Fig. 17
For the legend for wiring diagrams, see Table 1, Table 2 and Table 3.
Table 1 Cable cross-sections
Length Length
< 7.5 m 7.5 - 15 m
2
0.75 mm 1.0 mm
2
0.75 mm 1.0 mm
2
1.0 mm 1.5 mm
2
1.5 mm 2.5 mm
2
2.5 mm 4.0 mm
2
4.0 mm 6.0 mm
53
Table 2 Cable colours
bl blue
br brown
ge yellow
2
gn green
2
gr grey
2
or orange
rt red
2
sw black
2
vi violet
ws white
2