Helios KWL 340 D Manual page 52

Installation and Operating Instructions
EN
NOTE
Central ventilation unit – KWL 220/340 D
Determine system characteristic curves for supply and extract air:
1. Install pressure measuring connectors in the unit supply, extract, exhaust and intake air ducts (see Fig. 38).
ⓘ Ensure approx. 20 cm straight settling section up to the measuring connectors!
Exhaust Supply
Measuring
device
2. Enter the following values for the fan powers in the respective ventilation profile via the easyControls software or the
control element KWL-BE Touch: Away: 30 % / At home: 50 % / Boost: 80 % (cf. Fig. 39 ).
3. Select the individual ventilation profiles (At home, Away, Boost) one after the other and measure the static differential
pressure between extract and exhaust air and supply and intake air respectively.
4. Enter the determined differential pressures from the supply and intake air measurement in the unit characteristic
curve for supply air (see Fig. 34 and Fig. 36) according to the fan outputs saved in the ventilation profile (cf. Fig. 39
and Fig. 40).
5. Enter the determined differential pressures from the extract and exhaust air measurement in the unit characteristic
curve for extract air (see Fig. 35 and Fig. 37) according to the fan outputs saved in the ventilation profile (cf. Fig. 39
and Fig. 40).
The following figures show example characteristic curves.
D p
f a
Pa
è
à
ú
ó
é
á
û
ô
ê
â
Fig. 38
Extract Intake
Measuring
device
Fig. 40
10 %
â
20 %
ê
30 %
ô
40 %
û
50 %
á
60 %
é
70 %
ó
80 %
ú
90 %
à
100 %
è
V · m
3 /h
19
Fig. 39