Technical data

Thermo 90 S / Thermo 90 ST Technical data
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13 Technical data
Except where limit values are specified, the technical data on the right
refer to the usual heater tolerances of ± 10 % at an ambient temperature
of + 20 °C and at nominal voltage.
13.1. Electrical components:
The control module, motors for combustion air blower and circulating
pump, glow plug, switch and timer (no timer for ADR mode) are
designed for either 12 V or 24 V. The temperature limiter, temperature
sensor and flame sensor are identical on 12 V and 24 V heaters.
13.2. Fuel for Thermo 90 S and Thermo 90 ST petrol:
The fuel specified by the manufacturer must be used.
Both leaded and unleaded fuel may be used.
13.3. Fuel for Thermo 90 S / Thermo 90 ST and
Thermo 90S-ADR /Thermo 90 ST-ADR (diesel):
The diesel fuel specified by the manufacturer must be used.
We know of no negative influences due to additives. If fuel is extracted
from the vehicle’s tank, follow the additive instructions issued by the
vehicle manufacturer.
If you change to low-temperature fuel, the heater must be operated for
approx. 15 minutes so that the fuel line and fuel pump are filled with the
new fuel.