Viessmann Vitomax HW Series Installation Instructions Manual page 15

Adjusting the burner
M70A
Boiler size
Rated heating output
Permissible combustion heating
output
Flame tube dimensions
Diameter
Smooth pipe, min. in-
■
ternal
7
Flame tube length
Reversing chamber
depth
Burner connections
Max. flame head
■
7
Minimum flame head
■
length
Combustion chamber volume
(average values)
Flame tube
■
Flame tube length a and re-
■
versing chamber depth b
Max. pressure drop on the
flue gas side
For natural gas
■
For EL fuel oil
■
Tab. 12
Boiler size
Flue gas volume
Tab. 13
Boiler size
Boiler water capacity
Tab. 14
M72B
Boiler size
Rated heating output
For natural gas
■
For EL fuel oil
■
Permissible combus-
tion heating output
For natural gas
■
For EL fuel oil
■
Flame tube dimen-
sions
Diameter
Smooth
■
pipe, min.
internal
6 bar d1
7
(cont.)
1
MW 0.35 0.48
MW 0.40 0.54
d1 mm 468
a mm 1350 1500
b mm 250
c mm 240
e mm 315
0.24 0.31
m 3
3
m 0.29 0.37
mbar 4.2
mbar 3.8
1
0.49 0.63
m 3
1 2
1.77 2.16
m 3
1 2 3
MW 2.30 2.60 2.90 3.20 3.60 4.00 4.50 5.20 6.00 6.75 8.00
MW 2.30 2.60 2.90 3.20 3.60 4.00 4.50 5.20 6.00 6.75 8.00
MW 2.53 2.86 3.19 3.52 3.96 4.40 4.95 5.72 6.60 7.42 8.79
MW 2.53 2.86 3.19 3.52 3.96 4.40 4.95 5.71 6.59 7.42 8.79
mm 803 803 853
2 3 4
0.65 0.85 1.10
0.73 0.96 1.24
508 556 581 631
2100 2170 2230
240 240 240 290
0.51 0.58 0.70
0.63 0.71 0.85
4.5 8.8 10.5 11.6
4.1 7.9 9.5 10.5
2 3 4
1.29 1.45 1.72
3 4 5
3.23 3.87 4.44
4 5 6
853 901 901 974
5 6 7
1.30 1.60 2.10
1.47 1.81 2.37
656 706 756
2300 2450 2850
500
370 370 420
360
0.78 0.96 1.28
0.95 1.15 1.50
12.2 12.2 14.0
11.1 11.0 12.6
5 6 7
1.91 2.33 2.94
6 7
4.99 5.75 7.18
7 8 9 A
974 1064 1064 1143
8 9
2.60
2.94
806
3150
470
1.61
1.86
13.2
11.9
8 9
3.73
8 9
8.71
B C
8.80
8.55
9.67
9.24
1143
15