E
N
G
L
I
S
H
13 / 20
0006081081_200907
CONTROL BOX SPECIFICATIONS
Control box
e relative
programmer
LAL 1.25
Cyclic relay
Safety time
in seconds
5
Pre-ventilation &
pre-washing time
in seconds
22,5
Post-ignition time
in seconds
15
Time between 1st
and 2nd flame
in seconds
7,5
IGNITION AND REGULATION
For ignition proceed as follows:
1) Remove the thermostat connection, if there is one, in order to
avoid insertion of the 2
nd
flame.
2) Open slightly the air regulator (see 8653/1) to allow a flow of
air presumed adequate for burner operations with the 1
st
flame
and block it in this position. Set the air regulation device on the
combustion head in an intermediate position (see Chapter “Air
Regulation on the Combustion Head”).
3) Connect the main switch and the control box switch in the
control panel
4) The control box will start functioning and will connect the
burner component devices according to its pre-established
programme. The unit starts up in this way, as described in the
Chapter “Description of Operations”.
5) When the burner is operating with the 1
st
flame, proceed with
regulating the amount of air required for good combustion
(see 8653/1). It is preferable that the quantity of air for the 1
st
flame is slightly reduced, in order to ensure soft ignition even
in the most critical conditions.
6) After regulating air for the 1
st
flame stop the burner, by discon
-
necting the main switch, connect the terminals of 4-pole plug
for the 2
nd
flame thermostat and settle (3) the 1
st
and 2
nd
stage
switch in 2
nd
stage position.
7) Regulate the combustion air for the 2
nd
flame (see BT
8653/1).
8) Now turn on the unit again. It should start up and pass auto
-
matically to the 2
nd
flame according to its pre- established.
9) With the burner operating at 2
nd
flame, proceed with regulating
(see BT 8653/1) the amount of air required to guarantee good
combustion.
REGULATING THE DISTANCE BETWEEN THE DISK
AND THE NOZZLE (see 0002935040)
The burners are provided with a device which permits a variation
in the distance between the disk and the nozzle. The distance
betweenthe disk and the nozzle has already been set by the
manufacturer and should be reduced if the atomized fuel cone in
exit from the nozzle wets the disk and fouls it up.
LAYOUT DIAGRAM OF NOZZLE - ELECTRODES - DISK
N° 0002935040
REV.: 26/09/2006
MOD.
A
B
C
D
E
BT 250 DSG-4T
2
21
23
2÷3
26
BT 300 DSG-4T
2
21
23
2÷3
26
