baltur SPARKGAS 30 LX Betriebsanleitung Seite 28

Note that some "locks" at the first stage are normal since in the valve ramp pipes there is still air that must be
discharged before having a stable flame.
To "unlock", press the "unlock" push button. At the first stage there may occur further "locks" due to:
a) The gas pipes have not been sufficiently air-bled, and thus the gas quantity is not sufficient to allow a stable
flame.
b) The "lock" with presence of flame may be caused by instability of the same in the ionisation zone for an
incorrect air/gas ratio. Remedy is by varying the quantity of supplied air and/or gas so as to find the correct
ratio. The same problem may be caused by a wrong air/gas distribution in the combustion head. Remedy
is by operating on the combustion head regulation device, by adjusting the closing or opening of the air
passage between head and gas diffuser.
11) Set the burner to minimum flame (modulation servomotor set to minimum), check the quantity and appearance of
the flame making the necessary adjustments: see instructions elating to the gas valve model MB-VEF... Afterwards,
check the supplied gas quantity by reading the meter. If necessary, adjust the gas output and the relevant combus-
tion air by operating as described above. Then, check the combustion with the special instruments (see chapter
"Combustion control".
12) After adjusting the "minimum", set the modulation switches to MAN (manual) and MAX (maximum) position. The
air regulation servomotor sets to "maximum" and as a consequence, also the gas supply reaches the "maximum".
The quantity of supplied gas is then checked by reading the meter.
With burner ignited at the maximum existing output, measure the gas flow rate by calculating the difference
between two reads performed after one minute from one another. By multiplying the measured value by sixty, a
sixty-minute flow rate – that is, one hour – is obtained. By multiplying the hourly output (m
you obtain the delivered power in Kcal/h, which must correspond or be very close to that required by the burner
(lower heat value for methane = 8550 Kcal/h). Avoid operating the burner if the flow rate is more than the
admissible for the boiler so as to prevent possible damages to the same. Shut down the burner after the
two meter reads.
13) To change the maximum gas output, operate on the air flow rate regulator since the gas flow rate automatically
adjust to the air supply. Then, operate on the cam regulating the air damper maximum aperture position (see dr. n°
0002933220). Reduce the aperture angle of the air damper to reduce the gas flow rate, and vice versa. To change
the gas/air ratio, see instruction of gas valve MB-VEF...
14) Afterwards, check the combustion with the special instruments and if necessary, check the existing regulation (air
and optionally gas). Check with the special instruments that the carbon oxide (CO) percentage in the flue
gas does not exceed the maximum admissible value of 0.1% and that CO
(See chapter "Combustion control")
15) After adjusting the operation to the high flame (maximum) you must operate so that the air regulation
servomotor sets to the minimum to perform the control also in this position.
16) To set the air – and thus gas – regulation servomotor to the minimum, set the modulation switch to MIN.
17) When the air servomotor is set to minimum, and it is necessary to change the combustion conditions (gas/air), see
the instructions for regulating gas valves model MB-VEF...
18) It is advisable to perform the combustion control using the instruments and, if necessary, change the previous
regulation also in some intermediate points of the modulation stroke.
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does not exceed 10% for methane.
2
EN
3 /h) by the gas heat value,