DOMUSA TEKNIK Fusion Hybrid Oil, Installation And Operating Instructions Manual

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16 BURNER
16.1 Assembly
Fit the intake and return tubes, inserting the oil filter in the intake tube.
16.2 Burner start-up
The “Domestic” burner is equipped with a self-extracting pump to enable fuel intake from a tank
installed at a lower level than the burner, providing that the pressure difference measured with the
vacuum gauge at the pump does not exceed 0.4 bar (30 cmHg).
Fuel aspiration should never reach the bottom of the tank, always leaving a minimum distance of
10 cm to the bottom. If possible, float suction kits are recommended.
In installations that allow it, fuel returns must be made to a recirculating filter with an air trap,
thereby preventing oxidation in the diesel pump.
Make sure there is fuel in the tank, that the oil valves are open, and that voltage is reaching the
burner. Turn on the master switch. Unscrew the air bleed screw (manometer point). Then, when the
valve opens, remove the photocell sensor and move it towards a light source until the oil comes
out. Disconnect the burner and screw the bleed screw back in.
16.3 Adjustment
Observe the flame. If there is insufficient combustion air, it will be dark in colour and will produce
smoke, rapidly obstructing the flue outlet.
On the contrary, if there is an excess of combustion air, the flame will be whitish or bluish-white in
colour. This will reduce the performance of the boiler and it will fail to comply with anti-pollution
standards, and the excess air may also hinder the ignition process.
The flame should be orange in colour.
If the shape of the boiler makes it difficult or impossible to observe the flame, the combustion air
flow can be regulated by observing the smoke coming out of the flue. If the smoke is dark in colour,
more air will need to be provided to the burner, or if it is a very whitish colour, the air in the burner
will need to be decreased until no smoke at all is observed.
If you have a device for determining the composition of the combustion gases, this will be the best
guide for flame adjustment. If not, simply follow the above indications.
16.4 Primary air adjustment
To adjust the primary combustion air, turn the screw using a 6 mm. Allen key, as shown in the
diagram. Turn it clockwise to increase the airflow, and anticlockwise to decrease it.
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