Viessmann Vitomax HS M73 Operating And Service Instructions page 46

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