41
The combustion heating output of the burner must not
exceed the permissible combustion heating output of
the boiler. Adjust the maximum gas or oil throughput of
the burner to the rated boiler heating output.
Note
Limited-period operation (emergency mode) with fuel
oil EL when equipped with ECO. Operation with fuel oil
EL when equipped with ECO requires shorter cleaning
intervals for the flue gas side.
Burner service instructions
Information on the use of low-NO
x
burners
Incorrectly adjusted low-NO
x
burners increase the lev-
els of vibration and resonance during operation. This
phenomenon can result in damage to the thermal insu-
lation in the area of the boiler door(s), the cleaning
aperture closures and the flue gas collector.
To prevent vibrations and resonances:
■
Adjust the burner correctly.
■
Prevent "Hard flame".
■
Carefully monitor the operation of the burner during
the 1st year of operation.
■
Rectify operating faults immediately.
General conditions
The information and values in the tables relate to the
following general conditions:
■
O
2
content in dry flue gas
–
For natural gas 3.0 % by vol.
–
For fuel oil 3.0 % by vol.
■
Feedwater temperature 102 °C
■
TDS rate 0 %
■
100 % load
■
Installation altitude < 500 m above sea level
■
Combustion air temperature 25 °C
Calculating the combustion heating output
Calculation of the combustion heating output
*8
using
the nominal steam mass flow rate and operating pres-
sure.
Values as an average for all boiler sizes.
*8
From boiler size D onward, the combustion heating output for operation with light fuel oil (HEL) is limited to 18 MW.
Commissioning, inspection, maintenance
Adjusting the burner
5837984
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