Viessmann Vitomax HS M73 Operating And Service Instructions page 48

Commissioning, inspection, maintenance
Adjusting the burner
Type M95B - continued
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
■
*9 The actual nominal steam mass flow rate may vary subject to the specific system.
According to EN 12953, flame tube temperature monitoring is required for a combustion heating output above 14 MW for oil
*11
combustion and above 18.2 MW for gas combustion.
For boiler size B and above < 25 bar, the maximum operating pressure depends on the flame tube 7 .
*10
48
(cont.)
t/h
*9
t/h
*9
d1 mm 1506
d1 mm 1500
bar
a mm 5800
b mm
c mm 910
c mm
e mm
m³ 10.3
m³ 11.2
5 bar mbar 13.2
mbar 14.6
23 bar *10
5 bar mbar 12.5
23 bar mbar 13.9
*10
5 bar mbar 11.7
23 bar *10 mbar 13.7
5 bar mbar 9.7
23 bar *10 mbar 10.7
5 bar mbar 9.2
mbar 10.1
23 bar *10
5 bar mbar 8.6
23 bar mbar 10.0
*10
9 A B
18 20 22 24
18 18.5 18.7 19
*11 *11
1556 1606
1550 1600 1650
8 6 6
6075 6375 6650
1010 1010 1110
Adjusted subject to burner.
11.6 12.9 14.2
12.5 13.9 15.3
14.2 14.5 15.3
15.8 16.0 16.8
13.5 13.5 14.3
14.9 14.9 15.8
12.4 13.3 13.8
14.6 15.3 16.0
9.1 8.3 8.7
9.9 9.3 8.6
8.6 7.7 8.1
9.3 8.7 8.1
7.9 7.6 7.8
9.1 8.9 8.2
C D E
26 28 30
23 23.6 24.4
*11 *11 *11 *11
– – –
1675 1725 1775
– – –
6950 7225 7475
500
1110 1110 1210
– –
360
15.3 16.9 18.5
16.4 18.1 19.7
16.4 15.7 15.9
18.0 17.1 17.3
15.3 14.7 15.0
16.9 16.1 16.4
14.7 14.4 14.8
16.9 16.5 16.8
9.2 8.8 8.7
9.9 8.7 8.8
8.5 8.3 8.2
9.3 8.2 8.3
8.2 8.1 8.1
9.3 8.4 8.5
F G
31.5
24.4
*11
– –
1800
– –
7675
1210
–
19.5
20.8
16.5
17.9
15.6
16.9
15.4
17.4
8.8
8.7
8.3
8.3
8.2
8.5