Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Combustion Head Adjustment; Adjustments Prior To Ignition (Light Oil) - Riello DB 16 LSE FGR Installation, Use And Maintenance Instructions

5

Start-up, calibration and operation of the burner

5.1

Notes on safety for the first start-up

The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
5.2

Combustion head adjustment

In order to optimise performance, the burner is equipped with a
variable geometry combustion head which operates on the basis
of the delivered output.
The device is connected to the shaft of the servomotor 11)(Fig. 8
on page 12) and using a lever mechanism it transmits the axial
movement to the cylinder located in the combustion head.
Before starting up the burner, it is advisable to choose the mobile
cylinder stroke on the basis of the maximum output that the burn-
er should deliver, in order to avoid setting a servomotor range
that is too short.
The factory regulation corresponds to the maximum output (cou-
pling position: 1).
Procedure for combustion head adjustment
– Remove the cover on the burner's air box.
– With the help of Tab. K, establish in which hole of lever B the
articulated coupling A joined to the mobile shutter should be
inserted.
– Fix the articulated coupling in the previously established hole.
– Close the cover again.
5.3

Adjustments prior to ignition (light oil)

It is recommended to adjust first the light oil burner
and then the gas burner.
Carry out the fuel change with burner off.
WARNING
5.4

Burner ignition (light oil)

Set the selector on the general panel to "ON".
Set the fuel selector to "OIL" to select light oil fuel.
When the limit thermostat (TL) is closed, the heat request signal
should switch on.
At first ignition, there is a momentary drop in fuel pressure due to
the filling of the nozzle piping. This lowering of the fuel pressure
can cause the burner to lockout and can sometimes give rise to
pulsations.
Start-up, calibration and operation of the burner
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
Refer to paragraph "Safety test - with gas ball
valve closed" on page 34 before the first start-
up.
WARNING
3
2
1
20165219
Coupling position
3
2
1
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
5.3.1

Nozzle

See information on page 21.
Once the following adjustments have been made, the ignition of
the burner must generate a noise similar to the noise generated
during operation.
If a burner lockout occurs, refer to the "Release procedure" given
in the equipment manual supplied.
29 GB
Fig. 32
Output (kW)
10000
13000
16000
Tab. K
20163598