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Adjusting the burner
The combustion heating output of the burner must not
exceed the permissible combustion heating output of
the boiler. Do not set the maximum gas or oil through-
put of the burner until the boiler has heated up to the
rated boiler heating output.
For commissioning or a cold start, only heat up with a
low load (30 %).
Use of low-NO
burners
x
Incorrectly adjusted low-NO
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/doors, the cleaning
aperture covers and the flue gas collectors.
Reference values
The information and values in the tables relate to the
following general conditions:
■
O
content in dry flue gas
2
For natural gas: 3.0
–
%
For EL fuel oil: 3.0
–
%
–
Data for other fuels can only be determined on the
basis of a fuel analysis.
■
Boiler flow/return temperature:
–
80/60 °C without economiser, with condensing
ECO
90/70 °C with non-condensing ECO
–
■
Economiser water inlet temperature:
–
Condensing ECO: 30 °C
–
Non-condensing ECO: 70 °C
Max. pressure drop on the flue gas side
Boiler type M22A
Boiler size
Rated heating output
For natural gas
■
For EL fuel oil
■
Max. pressure drop on the flue gas
side
For natural gas
■
For EL fuel oil
■
Tab. 9
Boiler type M62D
Boiler size
Rated heating output
For natural gas
■
For EL fuel oil
■
Max. pressure drop on the flue gas
side with condensing ECO
For natural gas
■
Max. pressure drop on the flue gas
side with non-condensing ECO
burners increase the lev-
x
by vol.
by vol.
1
MW 0.70 1.00 1.40 1.80 2.30 2.80 3.50 4.20 5.00 6.00
MW 0.70 1.00 1.40 1.80 2.30 2.80 3.50 4.20 5.00 6.00
mbar
5.5
mbar
4.9
MW
2.30
MW
2.30
mbar
8.8
Commissioning, inspection, maintenance
Engineering information – Vitomax cold and
warm starts in shell boilers
Burner operating and service instructions
To prevent vibrations and resonances:
■
Adjust the burner correctly.
■
Prevent "hard flames".
■
Carefully monitor the operation of the burner during
the 1st year of operation.
Rectify operating faults immediately.
■
■
Water flow rate:
–
Condensing ECO: Continuous partial flow with a
flow rate that equates to 30
water flow rate at a spread of 20 K
Non-condensing ECO: Continuous full flow with a
–
load-dependent boiler water flow rate
■
100
load
%
■
Installation altitude: < 500 m above sea level
■
Combustion air temperature: 25 °C
2
3
4
5
6.8
8.4
9.4
9.2 10.1 11.9 12.9 13.6 16.1
5.9
7.4
8.2
8.0
1
2
3
4
2.80
3.50
4.20
2.80
3.50
4.20
10.9
12.1
12.9
of the max. boiler
%
6
7
8
9
8.7 10.2 11.0 11.6 13.7
5
6
7
8
5.00
6.00
7.00
8.00
5.00
6.00
7.00
7.84
14.7
16.1
17.8
12.3
A
B
7.00
7.00
16.4
13.9
9
9.00
8.51
14.0
29
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