Viessmann VITODENS 111-W Installation And Service Instructions Manual page 28

Commissioning, inspection, maintenance
Burner adjustment when connecting multiple...
Two boilers per floor
3 m
Fig. 20
Rated heating output 26 kW
Number of boilers
Correction factor (setting value)
0
1
2
3
4
5
6
28
operation with natural gas
–
(cont.)
2
Flue length a (m)
16
≤
> 16 25 > 4
≤
> 10
–
> 20
–
–
–
4 6
4
≤
10 7
≤ ≤
20 > 7 11
≤ ≤
25 > 11 15
≤ ≤
> 15 20
– ≤
> 20 24
– ≤