Viessmann Vitomax HS M73 - Burner Data Tables (M95 B continued)

48
Type M95B - continued
Boiler size 9 A B C D E F G
Nominal steam mass flow rate for
operation with natural gas
*9
t/h 18 20 22 24 26 28 30 31.5
Nominal steam mass flow rate for
operation with light fuel oil (HEL)
*9
t/h 18 18.5
*11
18.7
*11
19
*11
23
*11
23.6
*11
24.4
*11
24.4
*11
Flame tube dimensions
Diameter
■
Smooth pipe, int. 7 d1 mm 1506 1556 1606 – – – – –
■
Corrugated pipe, int.
7
d1 mm 1500 1550 1600 1650 1675 1725 1775 1800
Smooth pipe application
limit
bar 8 6 6 – – – – –
Length a mm 5800 6075 6375 6650 6950 7225 7475 7675
Reversing chamber
depth
b mm 500
Burner connections
■
Max. flame head 7
(optional wear-resist-
ant burner entry point) c mm 910 1010 1010 1110 1110 1110 1210 1210
■
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 10.3 11.6 12.9 14.2 15.3 16.9 18.5 19.5
■
Flame tube length and reversing
chamber depth m³ 11.2 12.5 13.9 15.3 16.4 18.1 19.7 20.8
Pressure drop on the flue gas
side with natural gas
For operating pressure
■
With ECO 2 5 bar mbar 13.2 14.2 14.5 15.3 16.4 15.7 15.9 16.5
23 bar
*10
mbar 14.6 15.8 16.0 16.8 18.0 17.1 17.3 17.9
■
With ECO 1 5 bar mbar 12.5 13.5 13.5 14.3 15.3 14.7 15.0 15.6
23 bar
*10
mbar 13.9 14.9 14.9 15.8 16.9 16.1 16.4 16.9
■
Without ECO 5 bar mbar 11.7 12.4 13.3 13.8 14.7 14.4 14.8 15.4
23 bar
*10
mbar 13.7 14.6 15.3 16.0 16.9 16.5 16.8 17.4
Pressure drop on the flue gas
side with EL fuel oil
For operating pressure
■
With ECO 2 5 bar mbar 9.7 9.1 8.3 8.7 9.2 8.8 8.7 8.8
23 bar
*10
mbar 10.7 9.9 9.3 8.6 9.9 8.7 8.8 8.7
■
With ECO 1 5 bar mbar 9.2 8.6 7.7 8.1 8.5 8.3 8.2 8.3
23 bar
*10
mbar 10.1 9.3 8.7 8.1 9.3 8.2 8.3 8.3
■
Without ECO 5 bar mbar 8.6 7.9 7.6 7.8 8.2 8.1 8.1 8.2
23 bar
*10
mbar 10.0 9.1 8.9 8.2 9.3 8.4 8.5 8.5
*9
The actual nominal steam mass flow rate may vary subject to the specific system.
*11
According to EN 12953, flame tube temperature monitoring is required for a combustion heating output above 14 MW for oil
combustion and above 18.2 MW for gas combustion.
*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