Installation manual for automatic extract air valve
9
8. Commissioning
Setting the volume flow rates
Selecting the basic volume flow rate of the automatic extract air
valve
The basic volume flow rate can be increased by removing
the plastic plugs (from position 0 to position 1, 2, 3 or 4). This
can particularly be required in large rooms. For individual ba-
throoms and WCs, however, the volume flow rate is usually
not increased, i.e. no plug removed (position 0).
Setting the required volume flow rate of the automatic extract air
valve
The required volume flow rate can be restricted if needed.
The limits A, B, C or D can be selected according to the follow-
ing diagram.
Performance diagram HFA
Note
To simply measure the existing negative pressure, the valve
disc of the automatic extract air valve is equipped with a pres-
sure tap (M).
HFA
200
ps
Statischer Druckabfall
p
s
[Pa]
Grundvolumenstrom
‡
o
Volumenstrom [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10
20
30
50
100 150
L
wA
HFA
200
ps
Perte de char
ge statique
p
s
[Pa]
Débit d'air de base
‡
o
Débit d'air [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10
20
30
50
100 150
L
wA
HFA
200
ps
Static pr
essur
e dr
op
p
s
[Pa]
Base air volumen rate
‡
o
Air volumen rate [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10
20
30
50
100 150
L
wA
HFA
200
ps
Bedarfsvolumenstrom
‡
A B C D L
wA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Volumenstrom [m³/h]
Statischer Druckabfall
p
s
[Pa]
400
300
200
100
80
60
50
40
30
20
15 20
30
50
100
200 300 400
HFA
200
ps
Débit d'air nécessaire
‡
A B C D L
wA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Débit d'air [m³/h]
Perte de char
ge statique
p
s
[Pa]
400
300
200
100
80
60
50
40
30
20
15 20
30
50
100
200 300 400
HFA
200
ps
Required air volume rate
‡
A B C D L
wA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Static pr
essur
e dr
op
p
s
[Pa]
400
300
200
100
80
60
50
40
30
20
15 20
30
50
100
200 300 400
Air volume rate [m³/h]
Legend
0
= Damper closed, all plugs in place
1
= Damper closed, smallest plug removed
2
= Damper closed, medium plug removed
3
= Damper closed, largest plug removed
4
= Damper closed, all plugs removed
L
wA
= sound power level tolerance ± 2dB[A]
Legend
A
= Limit A
B
= Limit B
C
= Limit C
D
= Damper 100% open (largest volume flow rate)
Limit D - Standard
L
wA
= sound power level tolerance ± 2dB[A]
