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SUN G3 R
2.4 Nozzle and electrodes
Choosing the nozzle
Determine the required fuel ow-rate, based on the heat
input of the boiler and the minimum heat output (Hi) of the
fuel used (see table of technical speci cations, Chap. 4).
Based on the ow-rate calculated, use the table below,
according to the pump pressure, to determine the most
suitable nozzle size (in GPH). The bold values in the table
are the most suitable for the operation of the burner. In
the case of burners with preheater, the effective ow-rate
value is lower by around 10% than the values shown in
table.
Table of oil nozzle ow-rates
The values shown below are purely indicative,
as it should be remembered that the ow-rates
of the nozzles may change by ± 5%.
Table of spray values
The nozzles are available with different sprays, identi ed by one or more letters, depending on the manu-
facturer. The table shows the most suitable types of spray for the burner.
SPRAY
Assembling the nozzle
Once the correct nozzle has been selected, proceed as follows for the assembly:
1 Disconnect the oil supply pipe "A"
2 Remove the photo cell "7" and disconnect the cables from the ignition electrodes "C"
3 Loosen the two fastening screws "E"
4 Turn and remove the combustion head "F"
5 Remove the nozzle holder from the combustion head "F"
6 Replace the nozzle "G"
GB
Angle
Type of cone
Delavan
Cod. 3540C353 - Rev. 01 - 02/2015
Nozzle G.P.H.
9
0,40
1,44
0,50
1,80
0,60
2,16
0,65
2,34
0,75
2,70
Flow-rate at the outlet in kg/h
Type of nozzle
Monarch
Danfoss
Steinen
g. 5
Pump pressure (bar)
10
11
12
13
14
1,52
1,59
1,67
1,73
1,80
1 ,90
1,99
2,08
2,17
2,25
2,28
2,39
2,50
2,60
2,70
2,47
2,59
2,71
2,82
2,92
2,85
2,99
Hago
Fluidics
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