41
GB
ADJUSTEMENT
M
Check some adjustments before switching on the burner.
The air actuator has been factory pre-calibrated. The high flame cam must be
adjusted between 80 and 90° and the low flame cam to about 30°.
1)
Air servo-motor regulation (G 1300 - G 2000)
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 (yellow) Not used
CAM 2 (yellow) Closure position regulation (value 0)
CAM 3 (red) Maximum flame regulation (burner maximum flow rate)
CAM 4 (light blue) Minimum flame regulation (burner minimum flow rate)
CAM 1 (yellow)
CAM 2 (yellow)
CAM 3 (red)
CAM 4 (light blue)
Graduated scale