COMBUSTION HEAD ADJUSTMENT
Adjusting screw A modifies the position of the line choke/deflector with regards to the flow nozzle, thereby
varying the opening of the air intake.
AIR INTAKE ADJUSTMENT
The motor reducer controls the air intake valve. Adjustment of the open/close position of the 1° flame / max.
opening is controlled by turning the cam anti-clockwise to open the butterfly valve and clockwise to close.
Blue cam
Orange cam
Red cam
Black cam
Servocontrol type SQN 70...
A
totally closed
air control 1° flame
air control 2° flame
Permits opening of the
electromagnetic valve of
the 2° flame
ECO 50/2
ECO 70/2
Red
Blue
Orange
Black
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