46
Boiler size 9 A B C D E F G
■
With ECO 1 5 bar mbar 9.4 8.8 7.9 8.3 8.7 8.5 8.4 8.5
23 bar
*10
mbar 10.3 9.5 8.9 8.3 9.5 8.4 8.5 8.5
■
Without ECO 5 bar mbar 8.8 8.1 7.8 8.0 8.4 8.3 8.3 8.4
23 bar
*10
mbar 10.2 9.3 9.1 8.4 9.5 8.6 8.7 8.7
Type M93B
Boiler size 3 4 5 6 7 8 9
Nominal steam mass flow rate
*9
t/h 1.0 1.3 1.65 2.0 2.5 3.2 4.0
Flame tube dimensions
Diameter
■
Smooth pipe, int. 7 d1 mm 681 706 756 781 831 881 931
■
Corrugated pipe, int. 7 d1 mm ― ― 750 775 825 875 925
Smooth pipe application
limit
bar >25 >25 22 22 20 18 18
Length a mm 1710 1910 2130 2325 2535 2800 3085
Reversing chamber depth b mm 500
Burner connections
■
Max. flame head 7 (op-
tional wear-resistant
burner entry point) c mm
370 370 420 470 520 560 560
■
Max. flame head 7
(standard version)
c mm
Adjusted subject to burner.
■
Minimum flame head
length e mm
360
Combustion chamber volume (aver-
age values)
■
Flame tube m³ 0.62 0.75 0.96 1.11 1.37 1.71 2.10
■
Flame tube length and reversing
chamber depth m³ 0.80 0.94 1.18 1.35 1.65 2.01 2.44
Pressure drop on the flue gas side
with natural gas
For operating pressure
■
With ECO 2 5 bar mbar 4.6 6.0 7.6 8.8 8.8 10.1 9.7
23 bar mbar 5.0 6.5 8.4 9.7 9.7 11.4 10.8
■
With ECO 1 5 bar mbar 4.3 5.6 7.1 8.3 8.6 9.8 10.3
23 bar mbar 4.7 6.2 7.9 9.1 9.5 10.9 11.5
■
Without ECO 5 bar mbar 7.1 8.5 10.1 9.5 10.3 12.2 12.1
23 bar mbar 8.4 10.0 11.9 11.2 12.1 14.5 14.3
Pressure drop on the flue gas side
with EL fuel oil
For operating pressure
■
With ECO 2 5 bar mbar 4.1 5.4 6.8 7.9 7.9 9.1 8.7
23 bar mbar 4.7 6.1 7.8 9.1 9.0 10.7 10.1
■
With ECO 1 5 bar mbar 3.9 5.1 6.4 7.4 7.8 8.8 9.3
23 bar mbar 4.4 5.8 7.4 8.5 8.9 10.2 10.7
■
Without ECO 5 bar mbar 6.4 7.7 9.1 8.6 9.3 11.0 10.9
23 bar mbar 7.9 9.4 11.1 10.5 11.3 13.6 13.4
*10
For boiler size B and above < 25 bar, the maximum operating pressure depends on the flame tube
7
.
*9
The actual nominal steam mass flow rate may vary subject to the specific system.
Commissioning, inspection, maintenance
Adjusting the burner (cont.)
5837984
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