Viessmann Vitomax HS M73 - Burner Data Tables (M93 B); Burner Data Tables (M95 B)

45
Boiler size 1 2 3 4 5 6 7 8
23 bar
*10
mbar 9.7 10.0 11.4 12.2 11.8 12.6 13.8 9.7
■
Without ECO 5 bar mbar 10.1 11.2 12.2 12.0 11.3 13.1 11.6 7.8
23 bar
*10
mbar 11.9 13.2 14.4 14.1 13.4 15.4 13.6 9.2
Type M75C - 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 15.7 17.3
*11
18.2
*11
18.8
*11
19.0
*11
22.1
*11
23.5
*11
24.4
*11
Flame tube dimensions
Diameter
■
Smooth pipe, int. 7 d1 mm 1306 1381 1431 1506 1581 – – –
■
Corrugated pipe, int.
7
d1 mm 1300 1375 1425 1500 1575 1625 1700 1750
Smooth pipe application
limit
bar 10 8 8 8 6 – – –
Length a mm 5800 6075 6300 6550 6725 6900 7135 7675
Reversing chamber
depth
b mm 500
Burner connections
■
Max. flame head 7
(optional wear-resist-
ant burner entry point) c mm 810 910 1010 1010 1010 1110 1110 1110
■
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 7.8 9.1 10.3 11.8 13.6 15.0 17.0 18.5
■
Flame tube length and reversing
chamber depth m³ 8.4 9.8 11.1 12.6 14.5 16.0 18.1 19.7
Pressure drop on the flue gas
side with natural gas
For operating pressure
■
With ECO 2 5 bar mbar 13.4 14.4 14.7 15.5 16.6 15.9 16.1 16.7
23 bar
*10
mbar 14.8 16.0 16.2 17.0 18.2 17.3 17.5 18.1
■
With ECO 1 5 bar mbar 12.7 13.7 13.7 14.5 15.5 14.9 15.2 15.8
23 bar
*10
mbar 14.1 15.1 15.1 16.0 17.1 16.3 16.6 17.1
■
Without ECO 5 bar mbar 11.9 12.6 13.5 14.0 14.9 14.6 15.0 15.6
23 bar
*10
mbar 13.9 14.8 15.5 16.2 17.1 16.7 17.0 17.6
Pressure drop on the flue gas
side with EL fuel oil
For operating pressure
■
With ECO 2 5 bar mbar 9.9 9.3 8.5 8.9 9.4 9.0 8.9 9.0
23 bar
*10
mbar 10.9 10.1 9.5 8.8 10.1 8.9 9.0 8.9
*10
For boiler size B and above < 25 bar, the maximum operating pressure depends on the flame tube 7 .
*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.
Commissioning, inspection, maintenance
Adjusting the burner (cont.)
5837984