301
Thermo AC/DC
3 Assemblies and components
3
Description of assemblies
and components
The fully electrical water heaters Thermo AC/DC operate
independently of the vehicle engine and are connected to
the vehicle’s cooling and electrical systems. Thus, they
can be used in a depot for pre-heating purposes. For this
the AC heater is connected stably to the depot mains 3/
PE/N AC 400/230V 50Hz. Further more the heaters also
can be used in electric driven buses or hybrid buses
where a 600 (690) VDC (DC heaters) or a 3/PE/N AC 400/
230V 50Hz (AC heaters) power supply is provided in
association with the vehicle‘s own heating system:
–
to heat the passenger cabin, and
–
for pre-heating.
The heaters are approved for horizontal installation only.
Fig. 301 Heater overview
1
2
3
4
5
7
8
9
6
1
HV-Control head
2
Heat exchanger
3
Water, inlet
4
Temperature limiter
5
Water, outlet
6
Control thermostat
7
Control line connection
8
Power supply connection
9
Hood
Summary of Contents for Thermo AC 070
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