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Bentone
172 515 10-2 2022-11-25
6. Settings
6.1
Brake plate adjustment
The position of the brake plate must be adjusted to achieve the most favorable
pressure drop across the brake plate.
oosen the screw on the adjustment device.
•
To reduce the opening: turn the knob to the left.
•
To increase the opening: turn the knob to the right.
The adjustment of the position of the brake plate affects the air flow. It is
therefore always necessary to make a fine adjustment of the air by means of
the adjustment device of the burner.
6.2
Control of burner head
To check the burner head, brake plate and electrodes, see chapter Service
Combustion device.
6.3
Startup
After the burner has been mounted on the boiler and the electrical connection,
de-aeration and tightness control have been performed, the burner is ready to
start-up.
Read the sections dealing with settings of gas valve, damper motor and
combustion device before start-up.
Open the ball valve and turn on the main switch, start the burner and begin
setting up the system.
6.4
Control of combustion
Check combustion using flue gas analysis instruments. Set the burner to about
20% excess air and check that good combustion is obtained. Check the actual
gas flow on the gas meter to ensure that the correct input power is achieved.
Setting the air pressure switch
The air pressure switch must block the burner if the amount of air for
combustion becomes too low. The air pressure switch must be set so that in
the event of a lack of air supply at the burner’s max. or min. capacity reacts
before the monitored pressure drops so much that poor combustion occurs.
1.
Remove protective cover.
Carefully turn the scale on the air pressure switch clockwise until the
air pressure switch stops the burner.
Measure and note the lowest air pressure in the entire work area.
5.
Set the air pressure switch to about 10-15% lower than the lowest
noted pressure.
6.
7.
Refi t protective cover.
