Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition (Oil); Nozzle - Riello DB 2 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

Adjustments prior to ignition (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
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

Air / fuel adjustment

During the operations for calibrating the air/fuel ratio for oil burn-
ers, the following adjustments need to be made.
5.3.1

Oil pump outlet pressure

Turn the screw 1)(Fig. 29) on the pump.
For adjusting the pressure, see page 19.
5.4

Burner start-up (oil)

Set the selector on the main panel to "ON".
Set the fuel selector to "OIL" to select light oil as fuel.
When the limit thermostat (TL) is closed, the heat request signal
must be switched 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.
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.
20169116
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 31 before the first start-
up.
WARNING
5.2.1

Nozzle

See information on page 18.
5.2.2

Combustion head adjustment

See information on page 19.
Connection
pressure gauge
26 GB
D1498
1
Fig. 29