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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. In the case of burners
with preheater, the effective flow-rate value is lower by around 10% than the values shown in table.
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.
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Cod. 35445523 - 02/2007 (Rev. 00)
SUN G10 2S
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