Burner; Assembly; Burner Start-Up; Adjusting The Combustion Conditions - Trianco TRO Evolution System Series Installation And Operating Instructions Manual

24.- BURNER

24.1.- Assembly

Fix the burner support to the boiler, then fix the burner to the support. This will allow the
correct tilt of the flame tube towards the combustion chamber. Fit the intake and return
tubes, inserting the oil filter in the intake tube.

24.2.- Burner start-up

The "Domestic" burner is equipped with a self-extracting pump, enabling fuel intake from a
tank installed at a lower level than the burner, provided the pressure difference measured
with the vacuum gauge at the pump does not exceed 0.4 bar (30 cmHg).
Ensure there is fuel in the tank, that the oil valves are open and that there is an electric
connection to 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 fuel comes out. Disconnect the burner and screw the bleed
screw back in.

24.3.- Adjusting the combustion conditions

As each particular installation has a different combustion circuit, it is essential to adjust the
combustion conditions of each boiler. For the guarantee to be valid, the burner must be
adjusted by an official TRIANCO Technical Assistance Service.
Observe the flame. If there is insufficient combustion air, it will be dark in colour and will
produce smoke, obstructing the flue outlet.
On the contrary, if there is an excess of combustion air, the flame will be pale or bluish 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, and if it is very white, 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.
To adjust the air and burner line conditions, carefully follow the instructions given below.
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