baltur GI MIST 350 DSPGM, Инструкция

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0006080103 ed2005/10
Fuel and combustion air delivery remain at maximum value until the boiler temperature (pressure, if steam boiler),
approaches the value at which it has been set and causes the servomotor regulating fuel/air delivery to reverse
its previous sense of movement. The return movement of the servomotor causes a gradual reduction in light oil
delivery and a relative reduction in combustion air until they reach minimum value.
Should the maximum temperature (pressure, if steam boiler), be reached even with fuel and combustion air
delivery at a minimum, the thermostat (pressure switch, if steam boiler) will intervene when the value at which it
has been set is reached, and bring the burner to a standstill.
When the temperature (pressure, if steam boiler) drops below the intervention limit of the “shut down” device,
the burner will start up again as previously described.
During normal operating conditions, the modulation probe applied to the boiler is aware of load variations in the
boiler and automatically request the servomotor which regulates fuel/air delivery to make an adjustment in the
fuel delivery and relative combustion air delivery.
In this way, the delivery regulating system /fuel/air) reaches a position of equilibrium which corresponds to a fuel
delivery and a relative combustion air delivery equal to the quantity of heat required by the boiler.
As in indication, it should be kept in mind that the fi eld of variation in output obtainable with good combustion is
from 1 to 1/3 of the maximum output given on the rating plate.
Note: The air pressure switch must be set when the burner is started up and must be in function with the pressure
value verifi ed during operations with the ignition fl ame; otherwise the control box will go to “shut down”.
DIAGRAM OF LIGHT OIL MODULATING BURNERS
(MAGNET - NOZZLE WITHOUT PIN)
N° 8714/2
Rev. 19/02/2002
1 - Filter
2 - Burner pump
3 - Pressure gauge (0÷4 bar)
4 - Atomizer unit
5 - Return nozzle without pin
6 - Rod with closing pins
7 - By-pass holes
8 - Closing spring
9 - Opening magnet
10 - Return pressure regulator min 10÷12 bar max 18÷20 bar
11 - Modulation servomotor
12 - Control disk for variation of fuel / air delivery
13 - Air regulation shutters
14 - Flexible pipe
CONNECTION AT THE FUEL
FEEDING DIAGRAM FOR
ONE OR MORE BURNERS
(SEE 0002901120)