Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition; Maximum Fuel Flow Rate Adjustment - Riello PRESS 140 P/N 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

The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
7.2.1 Nozzle
See information on page 19.
7.3

Maximum fuel flow rate adjustment

It is carried out by choosing the right nozzle in Tab. K:
Nozzle
Model BERGONZO
B5
150
125
100
90
80
200
175
150
125
100
300
275
250
225
200
175
150
450
400
350
325
300
275
250
225
NOTE:
25 bar for fluid oil - up to 30 bar for thick oil (viscosity  20°E
at 50°C).
If you want a maximum flow rate somewhere between the two
values shown in the table, select a nozzle with a higher flow rate.
Start-up, calibration and operation of the burner
Output
Maximum flow
rate
kg/h
150
125
100
90
80
200
175
150
125
100
300
275
250
225
200
175
150
450
400
350
325
300
275
250
225
Check the correct working of the adjustment,
command and safety devices.
ATTENTION
7.2.2 Pump pressure
The pump leaves the factory set at 25 bar. It is activated by
loosening the vacuometer connection plug. See information on
page 24.
Fuel pressure
at pressure gauge delivery
bar
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Flow rate can be decreased at a later time by acting on the
pressure variator, as specified in page 28.
To prevent clogging, remove the filter from the
nozzle.
ATTENTION
27 GB
Fuel maximum pressure at
pressure gauge return
bar
24.5
24.8
24
21
22.5
24
24.5
24.5
24.8
24
24
23.5
25
24
24
24.5
24.5
22.5
23.5
23.5
24
24
23.5
25
24
20170392
Tab. K