14 _ Fresh Air Intake Unit
Indoor Units
9. Sound Levels
9.2 Sound Power Levels
Notes:
• Data is valid at diffuse field condition
• Data is valid at nominal operating condition
• Sound level can be increased in static pressure mode or
used air guide.
• Sound power level is measured on the rated condition in
the reverberation rooms.
•
Sound level will vary depending on a range of factors such as
the construction (acoustic absorption coefficient) of particular
room in which the equipment in installed.
•
Reference acoustic intensity 0dB = 10E-6μW/m
2
Model
Sound Power Levels dB(A)
High Fan Speed
ARNU48GBRZ4 62
ARNU76GB8Z4 70
ARNU96GB8Z4 72
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
ARNU48GBRZ4 ARNU76GB8Z4 ARNU96GB8Z4