Unigas LG35, Руководство по установке, использованию и обслуживанию

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C.I.B. UNIGAS - M039121CE
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Adjusting the air flow rate
The air rate is set by means of V screw. The air damper position is showed by the graduated scale I, where the symbol “0” shows the
complete closed position of the air damper.
Adjusting the air and gas pressure switches
The air pressure switch locks the control box if the air pressure is not the one requested. If it happens, unlock the burner by means of
the control box unlock pushbutton, placed on the burner control panel.
The gas pressure switches check the pressure to avoid the burner operate when the pressure value is not in the requested pressure
range.
Calibration of air pressure switch (only for single stage burners)
Calibration is carried out as follows:
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Remove the transparent plastic cap.
z
Once air and gas setting have been accomplished, startup the burner.
z
While the burner is operating, rotate slowly and clockwise the adjusting ring nut VR, until the burner locks; read the pressure value
on the scale of the pressure switch and set it again to a value reduced by the 15%.
z
Repeat the start-up cycle and check the burner runs properly.
z
Refit the transparent plastic cover on the pressure switch.
Calibration of minimum gas pressure switch
As for the gas pressure switch calibration, proceed as follows:
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Remove the transparent plastic cap.
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While the burner is operating at the maximum output, test the gas pressure on the pressure port of the minimum gas pressure
switch.
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Slowly close the manual cutoff valve (placed upstream the pressure switch, see gas train installation diagram), until the detected
pressure is reduced by 50%. Pay attention that the CO value in the flue gas does not increase.
z
Check that the burner is operating correctly.
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Screw down the pressure switch adjusting ring nut until the burner stops.
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Fully open the manual cutoff valve.
z
Refit the transparent plastic cover on the pressure switch.
VR
VR