Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Before First Firing; Burner Firing - Riello RLS 280/E 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-
WARNING
tions of the laws in force.
5.2

Adjustments before first firing

Adjustment of the combustion head has been illustrated on
page 23.
In addition, the following adjustments must also be made:
 Open manual valves up-stream from the gas train.
 Purge the air from the gas line.
 Adjust the low gas pressure switch to the start of the scale
(Fig. 36).
 Adjust the high gas pressure switch to the upper limit of the
scale (Fig. 36).
 Adjust the air pressure switch to the zero position of the scale
(Fig. 36).
 Fit a U-type manometer (Fig. 36) to the gas pressure test point
on the sleeve.
The manometer readings are used to calculate MAX. burner
power using the Tab. O on page 31.
Before starting up the burner it is good practice to adjust the gas
train so that ignition takes place in conditions of maximum safety,
i.e. with gas delivery at the minimum.
5.3

Burner firing

Having completed the checks indicated in the previous heading,
the pilot of the burner should fire.
If the motor starts but the flame does not appear and the flame
safeguard goes into lock-out, reset and wait for a new firing at-
tempt.
Pilot adjustment has been illustrated on Fig. 15 on page 22.
5.4

Burner calibration

The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
 Firing output
 Maximum burner output
 Minimum burner output
 Intermediate outputs between low and high fire
 Air pressure switch
 Minimum gas pressure switch
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Start-up, calibration and operation of the burner
36
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 42 before the first start-
up.
WARNING
20095479
Having adjusted the pilot, reconnect the main valve and ignite the
main flame; it might require several attempts to purge the air from
the gas lines or to adjust the valve with little gas.
Once the burner has fired, now proceed with calibration operations.
GB
Fig. 32