Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition (Light Oil); Maximum Fuel Flow Rate Adjustment - Riello P 300 P/G Installation, Use And Maintenance Instructions

7

Start-up, calibration and operation of the burner

7.1

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
7.2

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.
ATTENTION
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
7.3

Maximum fuel flow rate adjustment

It is carried out by choosing the right nozzle in Tab. K:
Nozzle
Model type
N1 - 50°
330
300
275
250
225
200
180
160
450
400
360
330
300
275
250
225
If you want a maximum flow rate somewhere between the two
values shown in the table, select a nozzle with a higher flow rate.
Flow rate can be decreased at a later time by acting on the
pressure variator, as specified in page 26.
Start-up, calibration and operation of the burner
Maximum
flow rate
kg/h
302
290
270
246
220
188
177
160
448
398
349
326
289
265
239
215
Check the correct working of the adjustment,
command and safety devices.
ATTENTION
7.2.1 Nozzle
See information on page 18.
7.2.2 Combustion head
The adjustment of the combustion head already carried out on
page 20 need not to be altered unless the 2nd stage output of
the burner is changed.
7.2.3 Pump pressure
See information on page 22.
Fuel pressure
at pressure gauge delivery
bar
24
25
25
25
25
25
28
25
25
25
25
25
25
25
25
25
25 GB
Fuel maximum pressure at
pressure gauge return
bar
16.5
17.8
17.5
17.3
18.0
18.0
17.8
17.8
17.2
18.0
18.0
18.0
18.0
18.0
18.0
18.0
20170350
Tab. K