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 (ECO 30)
The immediately accessible micrometric screw, permits
a fine, stable and precise control of the intake airflow.
After opening the lock-nut, turn the screw clockwise to
reduce the opening of the butterfly valve and anti-
clockwise to open the valve, referring to the data plate.
AIR INTAKE ADJUSTMENT (ECO 30/2 – ECO 40/2)
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
totally closed
Orange cam
air control 1° flame
Red cam
air control 2° flame
Black cam
Permits opening of the electromagnetic
valve of the 2° flame
Red
Blue
Orange
Black
Servocomando tipo SQN 70...
33