4 Installation Instructions Page 10
Option 1: The tank is higher than the heater
- Use a vacuum valve (B) to prevent spilling a complete tank of fuel in case of a leak.
Option 2: The tank is lower than the heater
The pump draws the fuel directly from the main tank.
- Make sure the oil doesn’t flow back, use a non-return valve (D) at the
- Mind the height difference, see table in chapter 4.3.1.
- The return oil hose has to end at least half way in the tank
Option 3: Use of an extra oil pump
- Mind the pump pressure, use a reduction regulator, the pressure on the filter may not exceed 0,5
bar.
- Eventually use aluminium or brass filter jars, oil conduits that can sustain higher pressure and
clamp them well on the nipples!
Option 4: Use of oil boxes (4a: link to boxes of the next heaters)
The oil box serves as a small reservoir, the oil circulates between the de oil box and the heater.
- Make sure the boxes are at least 10cm lower in relation to the underside of the tank.
- Connect a manual valve on each box.
- Bleed the boxes regularly!
- Advantage: no need for return hose(s) to the main tank.
(A) : Always use a filter when the oil or the tank may be dirty
(C ) : Oil hoses max. 3/8", bigger diameters could cause air bubbles.
(E) : Note a distance to feeding and drinking equipment and from plants in glasshouses concerning
dehydration.
Always use purified fuel. Observe the fuel quality:
Maximum sulphur content: 1000 mg/kg
Maximum water content: 200 mg/kg
Viscosity approx: 2 mm
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