301
Thermo G
3 Description of assemblies and components
3
Description of assemblies and
components
The water heater Thermo G 300 operates in conjunction
with the on-board heating system
–
to heat the passenger compartment
–
to defrost the windscreen, and
–
to pre-heat the water-cooled engines
in busses.
The water heater operates independently of the vehicle’s
engine and is connected to the cooling system, the gas
system and the electrical system of the vehicle. It is
screw-mounted to the chassis of the vehicle or an addi-
tional crossmember.
The heat is generated by the combustion of the gas. Via
the heat exchanger of the heater, the heat is dissipated to
a coolant circuit. The adaptation to the changing demand
of heat is reached by intermittent operation.
An integrated control device controls on the basis of the
signals of a temperature sensor the on and off switching
of the burner.
The heater Thermo G basically consists of:
–
the burner head
–
the combustion chamber
–
the heat exchanger
–
temperature sensor system
In addition, a circulating pump and a gas pressure regu-
lator for the gas supply to the heater are installed in the
vehicle.
1 Combustion air, intake
2 Hood
3 Fan housing
4 Coolant, inlet
5 Temperature sensor with integrated
overheat protection
6 Coolant, outlet
7 Heat exchanger
8 Plug, sensor system
9 Exhaust outlet
10 Control device
11 Gas port
12 Mesh
13 Protective grid
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