CIB UNIGAS IDEA NG280, Руководство по установке, использованию и обслуживанию

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C.I.B. UNIGAS - M039132CD
30
Power supply without neutral
If the power supply to the burner is 230V phase-phase (without the neutral wire), with the Siemens LGB2..., LMG2... or LME.. flame
control device, between the terminal 2 on the board and the earth terminal, an RC Siemens RC466890660 filter must be inserted.
SETTING GAS AND AIR FLOW RATE
To perform the adjustments, unscrew the fixing screws and remove the burner’s cover (see Fig. 86-2)
Startup Output
The start-up heat output shall not exceed 120 kW (single stage burners) or 1/3 of nominal output (double-stage, progressive or fully
modulating burners). In order to comply with these requirements, burners are provided with butterfly valve and/or slow-opening safety
valve. On double-stage, progressive or modulating burners, the low flame ouptut must be higher than the minimum ouptut quoted in the
performance curve (page 32).
Adjustments - brief description
Key
C - Capacitor (22nF/250V)
R - Resistor (1Mohm)
(***) RC466890660 - RC Siemens filter
(Code: 2531003)
Fig. 41
ATTENTION: before starting the burner up, be sure that the manual cutoff valves are open and check that the pres-
sure upstream the gas train complies the value quoted on paragraph “Technical specifications”. Be sure that the
mains switch is closed.
ATTENTION: During commissioning operations, do not let the burner operate with insufficient air flow (danger of
formation of carbon monoxide); if this should happen, make the gas decrease slowly until the normal combustion
values are achieved.
WARNING: NEVER LOOSE THE SEALED SCREWS! OTHERWISE, THE DEVICE WARRANTY WILL BE INVALIDATE!
Fig. 42
Keys
1 Valve group
2 Cover
3 Gas proving system
4 Control panel
5 Blast tube
IMPORTANT! the combustion air excess must be adjusted according to the in the following chart:
Recommended combustion parameters
Fuel
Recommended (%) CO
2
Recommended (%) O
2
Natural gas 9 ÷ 10 3 ÷ 4.8
LPG 11 ÷ 12 2.8 ÷ 4.3
R
C
SIEMENS
3
4
1
5
2