Indoor unit
Fresh Air Intake Unit
_
13
Indoor Units
9. Sound Levels
Overall
1.5m
2m
2m
DUCT
DISCHARGE
SUCTION
DUCT
❈
Measuring place : Anechoic chamber
Model
Sound Pressure Levels
H
M
L
ARNU48GBRZ4
41
40
38
ARNU76GB8Z4
45
43
43
ARNU96GB8Z4 47
45
45
Notes:
1. Sound measured at 1.5m away from the center of the unit
2. Operating condition|
- Cooling : Outdoor temperature (33°C DB, 28°C WB)
- Heating : Outdoor temperature (0°C DB, -2.9°C WB)
3. Reference accoustic pressure 0dB = 20μPa
4. 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.
[dB(A)]
Octave Band Sound Pressure Level (0 dB = 20 μPa)
Octave Band Sound Pressure Level (0 dB = 20 μPa)
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63
125
250
500
1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63
125
250
500
1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Sound Pressure Level (0 dB = 20 μPa)
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63
125
250
500
1 000 2 000 4 000 8 000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ARNU48GBRZ4
ARNU76GB8Z4
ARNU96GB8Z4
n
High
▲
Mid
l
Low
n
High
▲
Mid
l
Low
n
High
▲
Mid
l
Low
9.1 Sound Pressure Levels
Содержание ARNU48GBRZ4
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