Viessmann VITODENS 050-W Installation And Service Instructions Manual page 36

Commissioning, inspection, maintenance
Further details regarding the individual steps
Two boilers per floor
Rated heating output 24 kW
Number of boilers
Correction factor (adjustable value)
0
1
2
3
4
5
6
Rated heating output 33 kW
Number of boilers
Correction factor (adjustable value)
0
1
2
3
4
5
6
Note
The correction factor changes the boiler
modulation range.
36
(cont.)
2
Flue length a (m)
≤15
–
–
–
–
–
2
Flue length a (m)
≤ 9
> 9 ≤ 15
–
–
–
–
4
≤5
> 5 ≤ 9
> 9 ≤ 14
> 14 ≤ 15
–
–
4
≤ 6
> 6 ≤ 8
> 8 ≤ 10
> 10 ≤ 13
> 13 ≤ 15