Thermo E 200 / 320 1 Introduction
103
Coolant level verification and cooling system purging
must be performed according to the vehicle manufac-
turer's specifications. The coolant in the heating circula-
tion system should contain at least 20 % of an anti-
freezing agent recommended by the vehicle manufac-
turer.The anti-freezing agent content should not exceed
60 %.
Fuel hoses may not be bent or twisted during installation.
In order to avoid sagging, they should secured using
clamps in 25 cm distances.
Fuel lines must be protected against temperature expo-
sure.
Permissible fuel line dimensions must be obtained from
the installation instruction.
It is to be ensured that the fuel is supplied to the heater
clean and without bubbles.
If a shut-off fitting is installed in the return line, an informa-
tion plate must be installed at a well visible location.
Fig. 101 Heater installation example in a bus
1 Wall heater with fan
2 Heat exchanger at the entrance
3 Heater
4 Circulation pump
5 Roof heat exchanger
6 Vehicle engine
7 Shut-off valve
8 Driver seat heater
9 Control element
Water heating circulation system - wall heater and roof channel heater
Supply
Return
Fig. 102 Information placard
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