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SUN G6
Checks and adjustments during operation
• Connect a combustion analyser to the boiler outlet and operate the burner at full power for 10 mi-
nutes; in the meantime, check the operation of the flue gas exhaust pipe.
• Slowly adjust the air damper until reaching the required excess air value for operation, using the
combustion analyser to check the O2 content in the flue gas. The O2 content in the flue gas should
not be less than 2.5% (risk of polluting combustion) and should not exceed 5% (risk of difficulty in
ignition and production of soot).
• Then perform a number of ignition cycles. In the event of flame pulsation or difficulty in igniting, adjust
the head, again using the combustion analyser to check the O2 content in the flue gas.
• Make sure that the pressure in the combustion chamber corresponds to the value indicated by the
manufacturer of the boiler
• Perform a complete analysis of the flue gas and check compliance with the limits set by the standards
in force.
3.3 Maintenance
The burner requires periodic maintenance, to be performed at least once a year by authorised ena-
bled.
The following basic operations must be performed:
• check and clean the internal parts of the burner, the tank and the boiler, as shown in the following
paragraphs;
• complete analysis of combustion (after normal operation for at least 10 minutes) and check the adju-
stments are correct;
Opening the cover and dismantling the burner
Before performing any cleaning operations or checks inside the burner, disconnect the burner
from the power supply using the main switch and close the fuel supply.
• To open the appliance, unscrew the screws (A) and remove the cover (B). The internal components,
pump, motor, damper, etc. can be accessed directly.
• To dismantle the appliance, unscrew the nut (C), remove the burner from the boiler and position it
so as to allow access to the head, electrodes and nozzle.
EN
C
fig 10
Cod. 3540C743 - Rev. 01 - 02/2015
A
B
27
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