Alnor HRU-MinistAir-W-450, Manual

Page: 6 / 26

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6
A LNOR
®
vent � lat � on systems
� s a legally protected trademark and techn � cal patent. All r � ghts reserved.
User’s manual of recovery vent � lators HRU-M � n � stA � r-W-450
Performance curve
Sound curve
Exter
nal Pressure (Pa)
Air Volume (m
3
/h)
100 200 300
0
50
100
150
200
250
300
350
400
450
500
400 450 500 350 250 150
Octave Sound Pressure Level (dB: Overall A Scale )
Central Frequency (Cycle per Second)
Hz
dB
63 125 250 500 1000 2000 4000 8000
60
50
40
30
20
10
NR0
NR10
NR20
NR40
NR50
NR60
NR30
*Acoustic test is performed 1.5 meter away from the unit.