Viessmann Vitomax HS M73 - Burner Data Tables (M75 C)

44
Boiler size 1 2 3 4 5 6 7 8 9
23 bar mbar 3.2 3.7 4.5 5.8 7.4 8.4 8.9 10.0 10.5
■
Without ECO 5 bar mbar 3.0 3.4 6.7 7.9 9.4 8.9 9.5 11.3 11.2
23 bar mbar 3.5 4.0 8.1 9.7 11.5 10.8 11.7 13.8 13.7
Type M75C
Boiler size 1 2 3 4 5 6 7 8
Nominal steam mass flow rate for
operation with natural gas
*9
t/h 5 6 7 8 10 12 14 16
Nominal steam mass flow rate for
operation with light fuel oil (HEL)
*9
t/h 5 6 7 8 10 12 14 14.4
Flame tube dimensions
Diameter
■
Smooth pipe, int. 7 d1 mm 856 906 931 981 1056 1106 1181 1231
■
Corrugated pipe, int.
7
d1 mm 850 900 925 975 1050 1100 1175 1225
Smooth pipe application
limit
bar 18 18 16 16 13 13 10 10
Length a mm 3375 3625 3850 4075 4450 4800 5150 5525
Reversing chamber
depth
b mm 500
Burner connections
■
Max. flame head 7
(optional wear-resist-
ant burner entry point) c mm
520 520 590 590 590 710 710 810
■
Max. flame head 7
(standard version)
c mm
Adjusted subject to burner.
■
Minimum flame head
length e mm
360
Combustion chamber volume
(min. values)
■
Flame tube m³ 1.94 2.34 2.62 3.08 3.90 4.61 5.64 6.58
■
Flame tube length and reversing
chamber depth m³ 2.23 2.66 2.96 3.46 4.34 5.09 6.19 7.20
Pressure drop on the flue gas
side with natural gas
For operating pressure
■
With ECO 2 5 bar mbar 11.4 10.5 12.4 13.3 13.4 13.3 15.1 13.8
23 bar
*10
mbar 12.5 11.6 13.7 14.6 14.8 14.7 16.8 15.3
■
With ECO 1 5 bar mbar 9.8 10.1 11.5 12.3 11.9 12.7 13.9 12.4
23 bar
*10
mbar 10.8 11.1 12.8 13.6 13.1 14.1 15.5 13.7
■
Without ECO 5 bar mbar 11.3 12.5 13.6 13.3 12.7 14.5 13.1 11.2
23 bar
*10
mbar 13.3 14.7 16.1 15.7 14.9 17.2 15.3 13.0
Pressure drop on the flue gas
side with EL fuel oil
For operating pressure
■
With ECO 2 5 bar mbar 10.2 9.4 11.1 12.0 11.9 12.0 13.4 9.6
23 bar
*10
mbar 11.2 10.4 12.3 13.1 13.3 13.2 14.9 10.8
■
With ECO 1 5 bar mbar 8.8 9.0 10.3 11.1 10.6 11.5 12.3 8.6
*9
The actual nominal steam mass flow rate may vary subject to the specific system.
*10
For boiler size B and above < 25 bar, the maximum operating pressure depends on the flame tube
7
.
Commissioning, inspection, maintenance
Adjusting the burner (cont.)
5837984