Eberspächer Hydronic D4 Installation Manual - page 17
Fuel system
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Fuel system
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Fuel supply
Fuel quality for diesel heaters
The heater can run on commercially available diesel fuel
to DIN EN 590 specification.
Fuel for special cases
In special cases (above 0°C), the heater can also run on
fuel oil EL or paraffin.
Fuel for low temperatures
Refineries and fuel service stations automatically adjust
the fuel to normal winter temperatures (winter diesel).
This means that difficulties are only to be expected
for extreme drops in temperature, as also apply to the
engine. Please also refer to the boat manual.
If the heater is run from a separate tank, please comply
with the following rules:
For temperatures above 0°C, any kind of diesel fuel as
per DIN EN 590 can be used.
If no special diesel fuel is available for low temperatures,
then paraffin or petrol should be mixed with the fuel
according to the following table:
Temperature
Winter diesel
Addition
0°C to –25°C
100%
–––
–25°C to –40°C
50%*
50% paraffin or
petrol
* or 100% special cold diesel fuel (Arctic diesel)
Please Note!
• Mixtures with used oil are not allowed.
• After refuelling with winter or cold diesel or the listed
blends, the fuel pipes and the dosing pump must be
filled with the new fuel by letting the heater run for
15 mins.
Operation with biodiesel (PME)
The heater is
not certified for operation with biodiesel
(EN 14214).
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