elco VECTRON L 04.410 DUO, Operating Instructions Manual, Page: 27 / 48

27 05/2005 - Art. Nr. 13 018 078A
Startup
Airflow regulation
Servomotor Y10
1 Four adjustable red cams
2 Marking to indicate cam setting
relative to scale no. 4
S Adjust screws for cams
4 Three scales divided between 0
and 160°
5 Air-flap setting indicator
6 Removable plug-and-socket
connection
Cam function
I Air-flap setting 2
d
stage
II Air shut-off
III Activation of solenoid valve
2
nd
stage
IV Air-flap setting 1
st
stage
m
Setting
Control cam
III must lie between
control cam I and IV .
Airflow control in the burner head
has an effect on the air quantity, as well
as on the mixing zone and the air
pressure in the burner tube. Turn
adjustment screw
A clockwise to
increase airflow, and anticlockwise to
decrease it.
–
clockwise = increased airflow
–
anticlockwise = reduced airflow
·
Adjust dimension Y corresponding to
table of settings (see on page 26).
The combustion air is regulated at two
points:
·
On the pressure side by means of the
opening gap between the turbulator
and burner tube.
·
On the suction side by means of the
air flap actuated by servomotor
Y10 .
Airflow regulation using an air flap.
This is actuated by the servomotor Y10 .
The position of the air flap is
determined by adjusting cams
I - IV .
EN