baltur COMIST 72 DSPGM Manuel D'installation, Utilisation Et Entretien page 17

As in indication, it should be kept in mind that the field
of variation in output obtainable with good combustion
is from 1 to 1/3 of the maximum output given on the
rating plate.
!
The air pressure switch must be set when the
burner is started up and must be in function with
the pressure value verified during operations with
the ignition flame; otherwise the control box will
go to "shut down".
DIAGRAM OF LIGHT OIL MODULATING BURNERS ( MAGNET - NOZZLE WITHOUT PIN)
CONNECTION AT THE FUEL
FEEDING DIAGRAM FOR
ONE OR MORE BURNERS
(SEE 0002901120)
1 FILTER
2 BURNER PUMP
3 PRESSURE GAUGE 0 - 40 BAR
4 ATOMIZER UNIT
5 RETURN NOZZLE WITHOUT PIN
6 ROD WITH CLOSING PINS
7 BY-PASS HOLES
8 CLOUSING SPRING
9 OPENING ELECTROMAGNET
10 RETURN PRESSURE REGULATOR
11 MODULATION SERVOMOTOR
12 CONTROL DISK FOR VARIATION OF FUEL / AIR DELIERY
13 AIR REGULATION SHUTTERS
14 FLEXIBLE PIPE
13 / 30
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MIN = 10-12 BAR
MAX = 18-20 BAR