9. Sound Levels
Indoor unit
14
_
Ceiling Cassette 2-way
Indoor Units
ARNU09GTL*4
ARNU12GTL*4
ARNU18GTL*4
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500
1000
2000
4000
8000
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)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500
1000
2000
4000
8000
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)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500
1000
2000
4000
8000
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)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500
1000
2000
4000
8000
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
ARNU24GTL*4
Overall
9.1 Sound Pressure Levels
1.5m
Microphone
❈
Measuring place : Anechoic chamber
Model
Sound Pressure Levels dB(A)
H
M
L
ARNU09GTL*4
36
34
32
ARNU12GTL*4
38
36
32
ARNU18GTL*4
40
36
32
ARNU24GTL*4
42
38
34
Notes:
1. Sound measured at 1.5m away from the center of the unit
2. Operating condition|
- Power source : 220-240V 50Hz / 220V 60Hz
- Cooling : Indoor temperature (27°C DB, 19°C WB),
Outdoor temperature (35°C DB, 24°C WB)
- Heating : Indoor temperature (20°C DB, 15°C WB),
Outdoor temperature (7°C DB, 6°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.