Ferroli SUN G6 Operating, Installation And Maintenance Instructions page 23

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SUN G6

2.4 Nozzle and electrodes

Choosing the nozzle

Determine the required fuel flow-rate, based on the

heat input of the boiler and the minimum heat output

(Hi) of the fuel used (see table of technical specifications,

Chap. 4). Based on the flow-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.

Table of oil nozzle flow-rates

The values shown below are purely indicative,

as it should be remembered that the flow-rates

of the nozzles may change by ± 5%.

Table of spray values

The nozzles are available with different sprays, identified by one or more letters, depending on the

manufacturer. The table shows the most suitable types of spray for the burner.

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"

fig. 5

Cod. 3540C743 - Rev. 01 - 02/2015