Webasto Thermo 90

2 General Description Thermo 90
202
Heater Thermo 90 S
2.1 Combustion Air Fan
The combustion air fan delivers the air required for
combustion from the combustion air inlet to the burner
insert.
2.2 Heat Exchanger
The heat exchanger dissipates the heat provided by
combustion to the coolant circuit.
Heat Exchanger
Thermo 90 S
1
2
3
4
5
6
7
8
9
10
11
1 Combustion Air Fan
2 Fuel Connection
3 Temperature Sensor
4 Temperature Limiter
5 Heat Exchanger
6 Inlet, Coolant
7 Circulation Pump
8 Outlet, Coolant
9 Outlet, Exhaust
10 Inlet, Combustion Air
11 Control unit (may also
be located externally
in the vehicle)
Temperature Limiter
Temperature Sensor