Viessmann Vitomax HS M73 Operating And Service Instructions page 49

Adjusting the burner
Note
For boiler size C and above, with or without ECO, the permissible combustion heating output is limited to 18 MW
with EL fuel oil in accordance with EN 12953-3.
e
a
Fig. 18 Flame tube dimensions
Note
Adjust the maximum oil/gas throughput of the burner to
suit the required maximum combustion heating output
of the boiler.
For calculating the district heating output see page.
Type M73B
Boiler size
Flue gas volume
With ECO 2
■
With ECO 1
■
Without ECO
■
Tab. 20
Type M73C
Boiler size
Flue gas volume
With ECO 2
■
With ECO 1
■
Without ECO
■
Tab. 21
Type M75C
Boiler size
Flue gas volume
With ECO 2
■
With ECO 1
■
Without ECO
■
Tab. 22
Type M75C - continued
Boiler size
Flue gas volume
With ECO 2
■
With ECO 1
■
Without ECO
■
Tab. 23
Commissioning, inspection, maintenance
(cont.)
b
3 4
m³ 1.28 1.47
m³ 1.30 1.50
m³ 1.24 1.43
1 2
m³ 5.1 6.0 6.6
m³ 5.2 6.1 6.7
m³ 4.9 5.8 6.4
9 A
m³ 19.8 22.5 24.9
m³ 20.2 22.9 25.4
m³ 19.2 21.8 24.2
m³ 0.58
m³ 0.59
m³ 0.49
5 6 7
1.79 2.03 2.48
1.83 2.07 2.53
1.74 1.97 2.41
3 4 5
8.0 9.2 11.9
8.1 9.3 12.1
7.8 8.9 11.5
B C D
27.9 31.2 34.5
28.5 31.8 35.2
27.1 30.3 33.5
1 2
0.72
0.73
0.63
8 9
3.29 3.97
3.35 4.04
3.19 3.85
6 7 8
14.0 17.0
14.3 17.3
13.6 16.5
E F G
37.9 40.4
38.6 41.2
36.8 39.2
49