Eberspächer B1L Installation Instructions Manual - page 10
3. Permissible suction and pressure heads for installation per 1. and 2.;
permissible positioning of metering pump
4. Important
Protect fuel lines, filter and metering pump from overheating; do
not install near silencers and exhaust pipes. Temperatures above
30° C lead to gas bubbles and problems with gasoline.
When installing the fuel line, fuel filter and fuel metering pump
near the rear axle, be sure to take the spring deflection of the
rear axle into consideration.
Cut fuel tubes and pipes to length only with a sharp knife. Cuts
may not be indented and must be burr-free.
For connection of the fuel branches, always use rubber tubing,
never plastic pipe.
Fuel pipes connected by means of a fuel tube.
Fuel pipe sections must abut.
10
Supply pressure from tank to metering pump:
e = max. 3000 mm suction head: tank at zero pressure
f =
max. 500 mm with gasoline
max. 1000 mm with diesel oil
Check whether tank ventilation works properly
intake from tank when underpressure occurs during operation
(valve 0.03 bar in tank cap)
f =
max. 150 mm with gasoline
max. 400 mm with diesel oil
Pressure head metering pump to heater:
g = max. 2000 mm
Fuel line metering pump to heater should not have a slope if at all
possible.
Fuel grades/Fuel at low temperatures
The heater can take without problem the same fuel you use in
your tank- In the USA diesel fuel no. 1 and no.2. Admixture of
used oil is not permitted
The refineries automatically adapt their fuels to normal winter
temperatures (Winter Diesel) Therefore difficulties can only
arise at extremely low temperature (as in the engine - see the
vehicle's instruction manual).
If the heater is operated from a separate tank, the following
rules must be observed: at temperatures above 0° C any type
of diesel fuel can be used.
If no special cold-weather diesel fuel is available at low
temperatures, mix kerosine or gasoline according to the
adjacent table.
Temperature
Winter
Additive
diesel oil
From 0°C to -15°C**
100%
-
From -15°C to -25°C 50%
50 % kerosine
or gasoline
From -25°C to -40°C -
100%
Kerosene*
* or special winter diesel oils
** or in accordance with fuel manufacturer's specifications
The fuel line and the fuel pump must be filled with new fuel by
operation for15 minutes.
Fuel for special cases
In special cases, the heaters can also be operated on extra
light fuel oil (above 0°C) or kerosine If in doubt consult the
manufacturer.