Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition (Light Oil); Burner Ignition (Light Oil) - Riello RLS 310/E O2 MX Installation, Use And Maintenance Instructions

6

Start-up, calibration and operation of the burner

6.1

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
6.2

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
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
6.3

Burner ignition (light oil)

Electrically power the burner using the disconnecting switch
on the boiler panel.
Position the selector "OIL-EXT-GAS" (Fig. 32 on page 35) on
"OIL" to select the light oil fuel.
Close the thermostats/pressure switches and set the switch of
Fig. 32 on page 35 to "AUTO".
Make sure that the lights or testers connected to
the solenoids, or the pilot lights on the solenoids
themselves, indicate that no voltage is present.
If voltage is present, stop the burner immediately
DANGER
and check the electrical connections.
As the burner is not fitted with a device to check the sequence of
the phases, it may be that the rotation of the motor
is incorrect.
As soon as the burner starts up, go in front of the fan motor cool-
ing fan and make sure it is rotating anticlockwise or else in the di-
rection of the arrow 26)(Fig. 5 on page 13).
If this is not the case:
– put the switch of Fig. 32 to "0" and wait until the control box
carries out the switching off phase;
– disconnect the burner form the electrical supply.
Invert the phases on the motor power supply.
This operation must be carried out with the electri-
cal supply disconnected.
DANGER
At the closing of the limit thermostat (TL), you must start the op-
erating cycle of the control box.
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.
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 43 before the first start-
up.
WARNING
6.2.1 Nozzle
See information on "Nozzle installation" on page 26.
6.2.2 Combustion head
The adjustment of the combustion head already carried out on
page 25 does not require any modifications if the burner output is
not changed.
6.2.3 Pump pressure
In order to change pump pressure, act on screw 5)(Fig. 23 on
page 28). See information on page 28.
6.3.1 Burner adjustment (light oil)
The optimum adjustment of the burner requires an analysis of
flue gases at the boiler outlet.
Adjust in sequence:
1 - Output upon ignition
2 - MAX output
3 - MIN output
4 - Intermediate outputs between Min. and Max.
5 - Air pressure switch
6 - Maximum oil pressure switch
7 - Minimum oil pressure switch
20079047
35 GB
Fig. 32
20182649