baltur GI1000 LX Instrucciones De Uso página 38

a) The gas pipes have not been sufficiently air-bled, and thus the gas quantity is not sufficient to allow a stable
flame.
10) 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 "SKP 70...",
Afterwards, check the supplied gas quantity by reading the meter. If necessary, adjust the gas output and the
relevant combustion air by operating as described above. Then, check the combustion with the special instru-
ments (see chapter "Combustion control".
11) 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. 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.
12) 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 n° 0002933490). 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 "SKP 70...".
13) 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
methane. (See chapter "Combustion control")
14) After adjusting the operation to the high flame (maximum) you must operate so that the air regulation ser-
vomotor sets to the minimum to perform the control also in this position.
15) To set the air – and thus gas – regulation servomotor to the minimum, set the modulation switch to MIN.
16) 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 "SKP 70...".
17) 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.
18) Now, check the correct automatic modulation operation.
19) In case of UV photoelectric cell, after at least one minute from ignition extract the photoelectric cell from its
housing. When the UV photoelectric cell is extracted from its housing, it cannot "see" the ultraviolet radiation
emitted by the flame and thus, the relevant relay de-energises. The burner immediately shuts down in "lock".
A light greasiness strongly affects the passage of ultraviolet beams through the UV photoelectric cell bulb,
thus preventing the internal photosensitive element from receiving the necessary radiation for a correct op-
eration. If the bulb is dirty with light oil, heavy oil, etc., clean it accurately. Note that a simple finger contact can
cause a light greasiness, sufficient to impair the UV photoelectric cell operation. The UV photoelectric cell
does not "see" daylight or the light of a common candle. A possible sensibility check can be made with a flame
(lighter, candle) or with the electrical discharge occurring between the electrodes of a common ignition
transformer. To ensure a correct operation, the UV photoelectric cell current value must be sufficiently stable,
and must not decrease below the minimum value required for the specific control box. Said value is shown in
the wiring diagram. It may be necessary to experimentally search the best position by making the body
containing the photoelectric cell slide (axial or rotation movement) with respect to the fixing clamp.
20) Check the efficiency of the boiler thermostats or pressure switches (their start must shut down the burner).
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does not exceed 10% for
2