Viessmann VITODENS 050-W Installation And Service Instructions Manual page 39

Further details regarding the individual steps
One boiler 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.
Commissioning, inspection, maintenance
(cont.)
2
Flue length a (m)
≤ 21
> 21 ≤ 25
– > 19 ≤ 25
–
–
–
2
Flue length a (m)
≤ 12
> 12 ≤ 25
–
– > 16 ≤ 20
– > 20 ≤ 25
–
3 4
≤ 19 ≤ 13
> 13 ≤ 17
– > 17 ≤ 21
– –
– –
3 4
≤ 17
≤ 16
≤ 14
> 14 ≤ 16
– > 16 ≤ 18
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