25
20096985
GB
Start-up, calibration and operation of the burner
6.1
Notes on safety for the first start-up
6.2
Adjustments prior to ignition
➤
Check the adjustment of the head as shown in page 18.
➤
Check the adjustment of the air damper servomotor as
shown in page 26.
➤
Slowly open the manual valves situated upstream from the
gas train.
➤
Adjust the air pressure switch (Fig. 23) to the start of the
scale.
➤
Purge the air from the gas line.
We recommend using a plastic tube routed outside the build-
ing and to purge air until gas is smelt.
6.3
First ignition
After checking the electrical wiring and the seal of the hydraulic
connections, set the air pressure switch at the minimum value.
Connect the pressure gauge to the gas pressure test point of the
burner M3)(Fig. 14 on page 20).
The Tab. M indicates the ignition settings for a burner operating
with methane gas.
The reference values are:
–
the ignition output;
–
the pre-calibration position of the air damper (CAM III);
–
the pre-calibration position of the calibration screw of the
POINT 0 of the gas train;
–
the gas train model to use.
Tab. M
◆
Set to values near the start of the scale (-1.5).
1
Depending on the maximum output required, adjust the
combustion head as indicated on page 18.
2
Select the “MAN” operating mode (Fig. 20) and carry out the
calibration of CAM III of the servomotor and the calibration
screw of the POINT 0 as indicated in Tab. M, then start the
burner.
3
After igniting, manually bring the servomotor to the second
flame position by pressing the “+” switch (Fig. 20).
During this operation check the stability of the flame: if it is
unstable, slowly increase or decrease the setting of the gas/
air ratio calibration screw until the desired maximum output
and the correct CO2 values in the flue gases are attained,
then calibrate cam I to the value reached by the servomotor.
4
Manually bring the servomotor to the first flame position by
pressing the “-” switch (Fig. 20).
Check the combustion and if necessary use just the screw
for calibrating the POINT 0 to obtain the correct CO2 values
in the flue gases.
5
If the first flame output needs modifying, use CAM III.
All the changes to the POINT 0 calibration screw will also
change the maximum gas output.
6
Once again bring the servomotor to the maximum opening
and check the maximum output again, using the screw for
calibrating the gas/air ratio.
7
Turn the servomotor again to the first flame position and
adjust the output again, just using the POINT 0 calibration
screw.
6
Start-up, calibration and operation of the burner
WARNING
The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
Check the correct working of the adjustment, com-
mand and safety devices.
CAUTION
Before starting up the burner, it is good practice to
adjust the gas train so that ignition takes place in
conditions of maximum safety, i.e. with gas deliv-
ery at the minimum.
Burner
Ignition
output
Adjusting
CAM III
Adjusting
POINT 0
Adjusting
gas/air ratio
Gas train
kW
Notch No.
Notch No.
Notch No.
Model
BS1/M
16
÷
52
20°
÷
30°
◆
Depending on
the maximum
output
CG 120
BS2/M
26
÷
33
20°
÷
30°
◆
BS3/M
48
÷
83
30°
÷
40°
◆
CG 220
BS4/M
68
÷
110
30°
÷
35°
◆
Fig. 20
AUT
MAN
+
-
O
F
F
D4468
Summary of Contents for Gulliver BS1/M
Page 2: ...Translation of the original instructions...
Page 35: ......
