Viessmann Vitomax HS M73 Operating And Service Instructions page 47

Adjusting the burner
Type M95B
Boiler size
Nominal steam mass flow rate for
operation with natural gas
Nominal steam mass flow rate for
operation with light fuel oil (HEL)
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
■
7
(optional wear-resist-
ant burner entry point)
Max. flame head
■
7
(standard version)
Minimum flame head
■
length
Combustion chamber volume
(min. 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
■
The actual nominal steam mass flow rate may vary subject to the specific system.
*9
For boiler size B and above < 25 bar, the maximum operating pressure depends on the flame tube 7 .
*10
(cont.)
t/h
*9
t/h
*9
d1 mm 981
d1 mm 975
bar
a mm 3375
b mm
610
c mm
c mm
e mm
m³ 2.55
m³ 2.93
5 bar mbar 11.2
mbar 12.3
23 bar *10
5 bar mbar 9.6
23 bar mbar 10.6
*10
5 bar mbar 11.1
23 bar mbar 13.1
*10
5 bar mbar 10.0
23 bar mbar 11.0
*10
5 bar mbar 8.6
mbar 9.5
23 bar *10
5 bar mbar 9.9
23 bar mbar 11.7
*10
Commissioning, inspection, maintenance
1 2 3
5 6 7
5 6 7
1056 1106 1156
1050 1100 1150
16 13 13 13
3625 3850 4075
660 710 710
Adjusted subject to burner.
3.17 3.70 4.28
3.61 4.18 4.80
10.3 12.2 13.1
11.4 13.5 14.4
9.9 11.3 12.1
10.9 12.6 13.4
12.3 13.4 13.1
14.5 15.9 15.5
9.2 10.9 11.8
10.2 12.1 12.9
8.8 10.1 10.9
9.8 11.2 12.0
11.0 12.0 11.8
13.0 14.2 13.9
4 5 6 7
8 10 12 14
8 10 12 14
1231 1306 1381
1225 1300 1375
10 10 8
4450 4800 5150
500
810 910 910
360
5.30 6.43 7.71
5.89 7.10 8.46
13.2 13.1 14.9
14.6 14.5 16.6
11.7 12.5 13.7
12.9 13.9 15.3
12.5 14.3 12.9
14.7 17.0 15.1
11.7 11.8 13.2
13.1 13.0 14.7
10.4 11.3 12.1
11.6 12.4 13.6
11.1 12.9 11.4
13.2 15.2 13.4
8
16
16
1431
1425
8
5525
910
8.89
9.70
13.6
15.1
12.2
13.5
11.0
12.8
9.4
10.6
8.4
9.5
7.6
9.0
47