Viessmann H32E, Инструкция по установке и обслуживанию, Страница: 66 / 80

66
Pressure drop and flow noise with spin discharge
restrictor
9
171
170
Fig. 101 Spin discharge restrictor for wall/ceiling air
vent
Flow rate in m³/h
20 25 30 35 40 45 50
0
10
20
30
40
50
60
Pressure drop
in Pa
H G F E D C B A
Fig. 102 Pressure drop
A
Closed
B
Position 5
C
Position 4
D
Position 3
E
Position 2
F
Position 1
G
Open
H
Without spin discharge restrictor
Pressure drop and flow noise with wide-angle dis-
charge restrictor
7
171
170
Fig. 103 Wide-angle discharge restrictor for wall/ceil-
ing air vent
A
B
C
D
E
F
Pressure drop
in Pa
5
10
20
40
80
15 30 60
Flow rate in m³/h
Fig. 104 Pressure drop and flow noise
A
to
C
Pressure drop curves for vent positions:
A
Closed
B
Half open
C
Open
D
to
F
Flow noise:
D
25 dB(A)
E
30 dB(A)
F
35 dB(A)
Commissioning, inspection, maintenance
Presetting supply air and extract air apertures
(cont.)
5831646