100
GB
30°
62°
4,1
4
19
14
Air servo-motor regulation
The air damper is activated by an electric servo-control. The positions of the damper are determined via the cams,
with reference to the scale on the relevant disc.
The cams are manoeuvred by means of the supplied spanner: they are clutched and self-locked.
The air damper servo-motor must be of the type indicated below.( Servo-motor in the figure in total closure sta-
tus)
CAM 1 Maximum flame regulation (burner maximum flow rate)
CAM 2 Closure position regulation (value 0)
CAM 3 Minimum flame regulation (burner minimum flow rate)
CAM 4 Not used
CAM 4
CAM 3
CAM 2
CAM 1
Electrodes positioning
An electrode is provided for ignition and one for flame control: these must not touch the deflector or other
metal parts for any reason as they would loose their function, compromising burner functioning.
It is good practice to check the correct position after every intervention on the head.
To position in correspondence of the hole of exit gas
NATURAL GAS
