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Control box
e relative
programmer
LAL 1.25
Cyclic relay
For ignition proceed as fol-
lows:
1)
Remove the thermostat con-
nection, if there is one, in order
to avoid insertion of the 2
fl ame.
2)
Open slightly the air regulator
(see 8653/1) to allow a fl ow of
air presumed adequate for bur-
ner operations with the 1
and block it in this position. Set
the air regulation device on the
combustion head in an interme-
diate 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 fun-
ctioning and will connect the
burner component devices
according to its pre-established
LAYOUT DIAGRAM OF NOZZLE - ELECTRODES - DISK
MOD.
BT 250 DSG-4T
BT 300 DSG-4T
CONTROL BOX SPECIFICATIONS
Safety time
Pre-ventilation &
in seconds
pre-washing time
in seconds
5
programme. The unit starts up
in this way, as described in the
Chapter "Description of Opera-
tions".
5)
When the burner is operating
nd
with the 1
regulating the amount of air
required for good combustion
(see 8653/1). It is preferable
that the quantity of air for the 1
fl ame
st
fl ame is slightly reduced, in or-
der to ensure soft ignition even
in the most critical conditions.
6)
After regulating air for the 1
fl ame stop the burner, by di-
sconnecting the main switch,
connect the terminals of 4-pole
plug for the 2
and settle (3) the 1
ge switch in 2
7)
Regulate the combustion air for
the 2
fl ame (see BT 8653/1).
nd
8)
Now turn on the unit again. It
A
2
2
0006081081_2006/10
Post-ignition time
in seconds
22,5
fl ame, proceed with
st
st
st
fl ame thermostat
nd
and 2
sta-
st
nd
stage position.
nd
B
C
D
21
23
2÷3
21
23
2÷3
34 / 69
Time between 1st
and 2nd fl ame
in seconds
15
7,5
should start up and pass auto-
matically to the 2
fl ame accor-
nd
ding to its pre- established.
9)
With the burner operating at 2
fl ame, 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.
N° 0002935040
REV.: 26/09/2006
E
26
26
nd
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