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Installation and Operating Instructions
NOTE
Central ventilation unit – KWL 250 W/W ET
settings must be individually adjusted to the present unit.
4. Enter the determined differential pressures from the supply and intake air measurement in the unit characteristic
curve for supply air (see Fig. 23 and Fig. 24) according to the fan outputs saved in the ventilation profile (cf. Fig. 26
and Fig. 27).
5. Enter the determined differential pressures from the extract and exhaust air measurement in the unit characteristic
curve for extract air (see Fig. 23 and Fig. 24) according to the fan powers saved in the ventilation profile (cf.Fig. 26
and Fig. 27).
The following figures show example characteristic curves.
D p
f a
Pa
è
à
ú
ó
é
á
û
ô
ê
â
6. If individual measuring points are connected, the system characteristic curve is for supply or extract air (cf. Fig. 28).
D p
f a
Pa
è
à
ú
ó
é
á
û
ô
ê
â
Fig. 27
10 %
â
20 %
ê
30 %
ô
40 %
û
50 %
á
60 %
é
70 %
ó
80 %
ú
90 %
à
100 %
è
V · m
3
/h
Fig. 28
10 %
â
20 %
ê
30 %
ô
40 %
û
50 %
á
60 %
é
70 %
ó
80 %
ú
90 %
à
100 %
è
V · m
3
/h
18
EN
Fig. 26
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