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Installation and Operating Instructions
EN
Central ventilation unit – KWL 250 W/W ET
Determine fan powers:
1. Enter the flow rates from the design calculation for the three ventilation profiles "At home", "Away from home" and
"Intensive ventilation" in the unit characteristic curve for supply and extract air (cf. Fig. 29).
ⓘ We recommend setting the following values in the ventilation profiles:
• Reduced ventilation ≙ Ventilation profile "Away from home"
• Nominal ventilation ≙ Ventilation profile "At home"
• Intensive ventilation ≙ Ventilation profile "Intensive ventilation"
Total air flow rates by fan-assisted ventilation according to DIN 1946-6:2019-12
Ventilation for mo-
Ventilation type
isture protection
Fan flow rate [m
/h]
3
59
D p
f a
Pa
è
à
ú
ó
é
á
û
ô
ê
â
2. The approximate fan powers to be set (in %) can be read from the ventilation profiles at the points of intersection of
the flow rates and the system characteristic curve. Enter these in the corresponding ventilation profile via the easy-
Controls 3.0 software or the control element KWL-BE Touch (cf. Fig. 29 and Fig. 30).
Example: Ventilation profile "Away from home" = 31 %
Ventilation profile "At home" = 55 %
Ventilation profile "Intensive ventilation" = 78 %
Reduced
ventilation
138
Fig. 29
10 %
â
20 %
ê
30 %
ô
40 %
û
50 %
á
60 %
é
70 %
ó
80 %
ú
90 %
à
100 %
è
V · m
/h
3
19
Nominal
Intensive
ventilation
ventilation
197
256
Fig. 30
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