Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Servomotor Adjustment; Adjustments Prior To Ignition (Light Oil) - Riello RLS 160/M 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
regulations of the laws in force.
ATTENTION
Check the correct working of the adjustment,
command and safety devices.
ATTENTION
6.2

Servomotor adjustment

The servomotor provides simultaneous adjustment for the air
damper, by means of the adjustable profile cam and the gas
butterfly valve.
The servomotor rotates by 130° in 42 s.
Do not alter the factory setting for the 5 cams; just check that they
are as specified below:
Cam I : 130°
Limits rotation toward maximum position.
When the burner is operating at MAX output, the
gas butterfly valve must be fully open: 90°.
Cam II : 0°
Limits rotation toward minimum position.
When the burner is shut down, the air damper and
gas butterfly valve must be closed: 0°.
Cam III : 30° (gas)
Adjusts the ignition position and the MIN output.
Cam IV : 30° (oil)
Adjusts the ignition position and the output of the 1st
stage.
Cam V : 90°
Determines when the 2nd stage light oil valve
opens.
6.3

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.
ATTENTION
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
1st and 2nd stage nozzles
See information on page 19.
Combustion head
The adjustment of the combustion head already carried out
needs not to be altered unless the 2nd stage output of the burner
is changed.
1st and 2nd stage fan damper valve
See "Servomotor adjustment" on page 29.
Start-up, calibration and operation of the burner
Before starting up the burner, refer to section
"Safety test - with no gas supply" on page 37.
ATTENTION
29 GB
D3923
Fig. 35
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