06/2011 - Art. Nr. 13 018 118C
40
Assembly
Checks and settings
Mixer unit and secondary air
Checks and settings for the mixer unit
When delivered, the burner is set up for
operation with natural gas.
•
Remove safety screw
D
.
•
Remove the mobile axis bolts
E
.
•
Open the burner housing.
•
Separate the two ignition cables.
•
Remove the hose on the oil
distributor.
•
Undo the four screws
5
of the
RTC
board by two turns.
•
Undo the nuts and side screws
C
,
which are used to secure the gas
and oil supply conduit.
•
Remove the mixer unit.
•
Check the following settings:
Ignition electrodes and gas nozzles
in compliance with the available gas
and the enclosed drawing.
•
Install the burner diffusers in accor-
dance with the boiler power.
•
Check for the presence and proper
position of the O-ring
J1
on the gas
head.
•
Refit in the reverse sequence.
•
To be checked:
– Check that the screw and nut are
secure
C
.
– Check for leaks later.
(Oil and gas side)
Secondary air
This is the air volume passed between
the diameter of the turbulator and the
blast tube. The position of the turbulator
(dimension
Y
) is to be read on a scale
of the
RTC
system (retention of the
burner head position) from 0 to 50 mm,
with 50 mm being the biggest and 0 the
smallest secondary air supply. When
the device is supplied, dimension
Y
is
set to 20 or 30 mm (see table).
Depending on:
–
Ignition quality (thrusts, fluctuations),
–
Combustion hygiene
–
this value can be adjusted.
Setting
This is done during operation or idle
mode, in accordance with the specified
values, without removing the burner.
If dimension
Y
is reduced, the CO
2
value increases and vice versa.
•
Undo the two screws
4
(drawing).
•
Move in the desired direction.
•
Redo the two screws
4
(drawing).
4
5
5
5
5
Type
Burner
power kW
Dimension
Y
mm
VGL
06.1200/1600
DP
700
900
1100
1200
0
10
20
25
VGL 06.1600
DP
1100
1300
1600
20
30
50
VGL 06.2100
DP
1150
1400
1700
1900
2050
10
20
30
40
50
Bold
: Equipment status at time of delivery
The function of the individual valves is
engraved on the distributor housing,
i.e:
S, 1, 2, 3
.
The electrical connectors are labelled
with
VS, S1, S2
or
S3
.
S+VS
=
Y17
Safety valve
1+S1
=
Y1
Valve 1st burning stage
2+S2
=
Y2
Valve for 2nd burning stage
3+S3
=
Y3
Valve for 3rd burning stage.
5
Four screws for removing the
mixer unit.
4
Two screws for setting dimension
Y
.
L
Secondary air value.
Summary of Contents for VGL 06.1200 DP
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