31
Instructions for the installer
Tipo di Gas
Supply
pressure
(mbar)
Metano (G20)
Propano (G31)
20
37
1500 - 6200
1400 - 5700
0,74 m³/h
0,54 kg/h
3,68 m³/h
2,70 kg/h
min.9,0 - max.9,0
min.10,3 - max.10,7
-
-
Diaphragm
Inlet
Outlet
34
34
70
30
C) COMPLETION OF THE BASIC
ADJUSTMENTS
-
Check the C0
2
values at the minimum and maximum ou-
tput
-
If necessary make the required adjustments
To ensure correct boiler operation the C0
2
values have to be adjusted with extreme care
respecting the values indicated in the table.
-
Close the sampling test point in the flue inlet/outlet termi-
nal with the appropriate cap
C
.
MINIMUM OUTPUT ADJU-
STMENT SCREW
In case of gas valve replacement or diffi-
cult ignition:
Screw down the maximum adjustment screw
“A”
in a clockwise direction until it comes to
its terminal point, than unscrew it for 3 turns.
Check boiler ignition; if the boiler goes into
lockout loosen the screw
“A”
again of one turn,
than attempt to fire the boiler once again. If
the boiler goes into lockout again, carry out
the above indicated operations until the boiler
is fired.
At this point carry out the burner adjustment
as previously indicated.
-
If necessary correct the value by turning the adjustment
screw
“B”
in a CLOCKWISE direction to increase the va-
lue and in an ANTICLOCKWISE direction in order to de-
crease it.
Check the C0
2
levels often, especially at low output
INJECTORS – PRESSURES
Fan speed
(rpm)
Min
consumption
Max.
consumption
min
max
C02 levels
(%)
Start-up
firing rate
%
Summary of Contents for Alkon Cargo 35
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